blastocystis hominis

Summary

Summary: A species of parasitic protozoa found in the intestines of humans and other primates. It was classified as a yeast in 1912. Over the years, questions arose about this designation. In 1967, many physiological and morphological B. hominis characteristics were reported that fit a protozoan classification. Since that time, other papers have corroborated this work and the organism is now recognized as a protozoan parasite of humans causing intestinal disease with potentially disabling symptoms.

Top Publications

  1. ncbi Blastocystis hominis infection in irritable bowel syndrome patients
    Anchalee Tungtrongchitr
    Department of Parasitology, Faculty of Medicine at Siriraj Hospital, Mahidol University, Bangkok, Thailand
    Southeast Asian J Trop Med Public Health 35:705-10. 2004
  2. ncbi [Prevalence of Blastocystis hominis among food handlers from Caroni municipality, Bolivar State, Venezuela]
    Ixora Requena
    Departamento de Parasitologia y Microbiologia, Escuela de Medicina, Universidad de Oriente, Ciudad Bolivar, Estado Bolivar, Venezuela
    Cad Saude Publica 19:1721-7. 2003
  3. ncbi Comparison of methods for detecting Blastocystis hominis
    K Suresh
    Scottish Parasite Diagnostic Laboratory, Stobhill Hospital, Glasgow, G21 3UW, UK
    Eur J Clin Microbiol Infect Dis 23:509-11. 2004
  4. ncbi Intestinal parasites, including Cryptosporidium species, in Iraqi patients with sickle-cell anaemia
    N K Mahdi
    Department of Microbiology, College of Medicine, University of Basra, Basra, Iraq
    East Mediterr Health J 8:345-9. 2002
  5. ncbi Epidemiological survey of Blastocystis hominis in Huainan City, Anhui Province, China
    Ke xia Wang
    Department of Etiology and Immunology, School of Medicine, Anhui University of Science Technology, Huainan 232001, Anhui Province, China
    World J Gastroenterol 8:928-32. 2002
  6. ncbi High prevalence of subtype 4 among isolates of Blastocystis hominis from symptomatic patients of a health district of Valencia (Spain)
    M Victoria Domínguez-Márquez
    Servicio de Microbiologia, Hospital Universitario de La Ribera, Alzira 46600, Spain
    Parasitol Res 105:949-55. 2009
  7. ncbi Prevalence of Blastocystis hominis carriage in Thai army personnel based in Chonburi, Thailand
    Paanjit Taamasri
    Department of Parasitology, Phramongkutklao College of Medicine, Rachathewi, Bangkok, Thailand
    Mil Med 167:643-6. 2002
  8. pmc Genomic analysis of Blastocystis hominis strains isolated from two long-term health care facilities
    H Yoshikawa
    Department of Biological Science, Faculty of Science, Nara Women s University, Kitauoya Nishimachi, Nara 630 8506, Japan
    J Clin Microbiol 38:1324-30. 2000
  9. ncbi Prevalence of Blastocystis hominis infection in asymptomatic individuals from Bangkok, Thailand
    Rapeeporn Yaicharoen
    Department of Parasitology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
    Southeast Asian J Trop Med Public Health 36:17-20. 2005
  10. ncbi Irritable bowel syndrome: is it associated with genotypes of Blastocystis hominis
    Javed Yakoob
    Department of Medicine, The Aga Khan University, Karachi, Pakistan
    Parasitol Res 106:1033-8. 2010

Research Grants

  1. Primate enteroviruses transmission in Bangladesh
    Lisa Jones Engel; Fiscal Year: 2007

Detail Information

Publications177 found, 100 shown here

  1. ncbi Blastocystis hominis infection in irritable bowel syndrome patients
    Anchalee Tungtrongchitr
    Department of Parasitology, Faculty of Medicine at Siriraj Hospital, Mahidol University, Bangkok, Thailand
    Southeast Asian J Trop Med Public Health 35:705-10. 2004
    ..ie examination for stool occult blood, simple saline smear method, formalin-ether technique, culture for Blastocystis hominis, modified trichrome stain, modified Ziehl-Neelsen method, and trichrome stain for parasitic and bacterial ..
  2. ncbi [Prevalence of Blastocystis hominis among food handlers from Caroni municipality, Bolivar State, Venezuela]
    Ixora Requena
    Departamento de Parasitologia y Microbiologia, Escuela de Medicina, Universidad de Oriente, Ciudad Bolivar, Estado Bolivar, Venezuela
    Cad Saude Publica 19:1721-7. 2003
    A cross-sectional survey was conducted to determine the prevalence of Blastocystis hominis infection in a random sample of apparently healthy food handlers...
  3. ncbi Comparison of methods for detecting Blastocystis hominis
    K Suresh
    Scottish Parasite Diagnostic Laboratory, Stobhill Hospital, Glasgow, G21 3UW, UK
    Eur J Clin Microbiol Infect Dis 23:509-11. 2004
    In order to determine the comparative sensitivity of two methods of detecting Blastocystis hominis and to investigate the seasonality of infection with this enteric protozoan parasite, the present study was conducted...
  4. ncbi Intestinal parasites, including Cryptosporidium species, in Iraqi patients with sickle-cell anaemia
    N K Mahdi
    Department of Microbiology, College of Medicine, University of Basra, Basra, Iraq
    East Mediterr Health J 8:345-9. 2002
    ..The most common intestinal parasites isolated in the sickle-cell patients were Blastocystis hominis (36%) and Giardia lamblia (28%)...
  5. ncbi Epidemiological survey of Blastocystis hominis in Huainan City, Anhui Province, China
    Ke xia Wang
    Department of Etiology and Immunology, School of Medicine, Anhui University of Science Technology, Huainan 232001, Anhui Province, China
    World J Gastroenterol 8:928-32. 2002
    ..To provide scientific evidence for prevention and controlling of blastocystosis, the infection of Blastocystis homonis and to study its clinical significance in Huainan City, Anhui Province, China...
  6. ncbi High prevalence of subtype 4 among isolates of Blastocystis hominis from symptomatic patients of a health district of Valencia (Spain)
    M Victoria Domínguez-Márquez
    Servicio de Microbiologia, Hospital Universitario de La Ribera, Alzira 46600, Spain
    Parasitol Res 105:949-55. 2009
    In order to know the genetic diversity of Blastocystis hominis from a health district of Valencia (Spain) 51 clinical isolates from symptomatic patients, 31 axenic and 20 monoxenic, were ribotyped by analysing the restriction fragment ..
  7. ncbi Prevalence of Blastocystis hominis carriage in Thai army personnel based in Chonburi, Thailand
    Paanjit Taamasri
    Department of Parasitology, Phramongkutklao College of Medicine, Rachathewi, Bangkok, Thailand
    Mil Med 167:643-6. 2002
    b>Blastocystis hominis is one of the most common intestinal parasites found in humans. The prevalence of B. hominis carriage in personnel who worked in the First Army Support Command, Chonburi, Thailand, was determined...
  8. pmc Genomic analysis of Blastocystis hominis strains isolated from two long-term health care facilities
    H Yoshikawa
    Department of Biological Science, Faculty of Science, Nara Women s University, Kitauoya Nishimachi, Nara 630 8506, Japan
    J Clin Microbiol 38:1324-30. 2000
    The genotype Blastocystis hominis is highly polymorphic. Therefore, a genetic marker would be a powerful tool for the identification or classification of B...
  9. ncbi Prevalence of Blastocystis hominis infection in asymptomatic individuals from Bangkok, Thailand
    Rapeeporn Yaicharoen
    Department of Parasitology, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
    Southeast Asian J Trop Med Public Health 36:17-20. 2005
    ..In this study, Blastocystis hominis infection was diagnosed by culturing in Jones' media...
  10. ncbi Irritable bowel syndrome: is it associated with genotypes of Blastocystis hominis
    Javed Yakoob
    Department of Medicine, The Aga Khan University, Karachi, Pakistan
    Parasitol Res 106:1033-8. 2010
    b>Blastocystis hominis is the most common intestinal parasite in humans. An extensive genetic variability has been described recently in B. hominis isolates. The aim of this study was to analyze genotypes of B...
  11. ncbi Clinical significance of Blastocystis hominis: experience from a medical center in northern Taiwan
    Han Yueh Kuo
    Section of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
    J Microbiol Immunol Infect 41:222-6. 2008
    b>Blastocystis hominis is an intestinal protozoan. The pathogenic role of this organism in human beings is still controversial and has varied among reports from different geographic areas...
  12. ncbi Identification of Blastocystis hominis isolates from asymptomatic and symptomatic patients by PCR
    Fadime Eroglu
    Department of Parasitology, Faculty of Medicine, Cukurova University, Balcali, Adana, Turkey
    Parasitol Res 105:1589-92. 2009
    ....
  13. ncbi Blastocystis hominis among symptomatic and asymptomatic individuals in Talkha Center, Dakahlia Governorate, Egypt
    Atef M El-Shazly
    Department of Parasitology, Faculty of Medicine, University of Mansoura, Mansoura, Egypt
    J Egypt Soc Parasitol 35:653-66. 2005
    b>Blastocystis hominis is now getting acceptance as an agent of human intestinal disease. B. hominis in stool samples of symptomatic and asymptomatic individuals was evaluated as a possible cause of gastro-intestinal troubles. B...
  14. ncbi Blastocystis hominis and other intestinal parasites in a community of Pitanga City, Paraná State, Brazil
    Solange Aparecida Nascimento
    Departamento de Analises Clinicas, Universidade Estadual de Maringa, Maringa, PR, Brazil
    Rev Inst Med Trop Sao Paulo 47:213-7. 2005
    The objective was to estimate the prevalence of Blastocystis hominis, to evaluate the effectiveness of different techniques for its diagnosis as well as to estimate the prevalence of other intestinal parasites in the community of Campo ..
  15. ncbi Phenotypic and genotypic characterisation of Blastocystis hominis isolates implicates subtype 3 as a subtype with pathogenic potential
    T C Tan
    Department of Parasitology, University of Malaya, Kuala Lumpur, Malaysia
    Parasitol Res 104:85-93. 2008
    Despite frequent reports on the presence of Blastocystis hominis in human intestinal tract, its pathogenicity remains a matter of intense debate...
  16. ncbi Cytologic diagnosis of blastocystis hominis in peritoneal fluid: a case report
    Willmar D Patino
    Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
    Acta Cytol 52:718-20. 2008
    b>Blastocystis hominis is the most common parasite identified in s worldwide. Although it is commonly identified in stool preparations, unusual to encounter B hominis in abdominal fluid.
  17. ncbi [Is Blastocystis hominis an opportunist agent?]
    Funda Doğruman Al
    Gazi Universitesi Tip Fakultesi, Tibbi Mikrobiyoloji Anabilim Dali, Ankara, Turkey
    Turkiye Parazitol Derg 31:28-36. 2007
    Despite its high prevalence throughout the world, major issues about Blastocystis hominis remain unresolved, including fundamental areas such as taxonomy and pathogenicity...
  18. ncbi The pathogenic role of different Blastocystis hominis genotypes isolated from patients with irritable bowel syndrome
    Shawky A Fouad
    Department of Internal Medicine, Cairo University, Cairo, Egypt
    Arab J Gastroenterol 12:194-200. 2011
    The pathogenic role of Blastocystis hominis is still regarded by some as controversial...
  19. ncbi Epidemiology of Blastocystis hominis and other intestinal parasites in a Vietnamese female immigrant population in southern Taiwan
    Hung Shiang Cheng
    Department of Clinical Laboratory Science, Kuo s General Hospital, Tainan, Taiwan
    Kaohsiung J Med Sci 22:166-70. 2006
    ....
  20. ncbi Six ulcerative colitis patients with refractory symptoms co-infective with Blastocystis hominis in China
    Wei Ping Tai
    Department of Gastroenterology, Beijing Shijitan Hospital, Beijing, 100038, China
    Parasitol Res 108:1207-10. 2011
    b>Blastocystis hominis is an enteric parasite which has long been considered as an innocuous commensal living in the intestinal tract. Our research was to explore the role of B. hominis in refractory ulcerative colitis...
  21. ncbi In vivo encystation of Blastocystis hominis
    K Suresh
    Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
    Parasitol Res 104:1373-80. 2009
    ....
  22. ncbi Extensive genetic diversity in Blastocystis hominis
    C G Clark
    Department of Medical Parasitology, London School of Hygiene and Tropical Medicine, UK
    Mol Biochem Parasitol 87:79-83. 1997
    ..If only a subset of the B. hominis variants have the potential to cause disease in humans this might explain the disparate findings reported. Future clinical studies must take the heterogeneity of B. hominis into account...
  23. ncbi Observations on the ultrastructure and viability of the cystic stage of Blastocystis hominis from human feces
    K T Moe
    Department of Microbiology, Faculty of Medicine, National University of Singapore, Republic of Singapore
    Parasitol Res 82:439-44. 1996
    This report describes the ultrastructure and viability of cysts of Blastocystis hominis from feces of infected patients...
  24. ncbi A case-control study of Blastocystis hominis among Iranian population
    Mohammad Rostami Nejad
    The Research Center of Gastroenterology and Liver Disease, Shaheed Beheshri University, M C Taleghani hospital, Yemen St, Evin, Tehran, Iran
    East Afr J Public Health 7:101-4. 2010
    A case-control study was conducted to investigate the epidemiology and clinical features of Blastocystis hominis among Iranian patients with and without GI symptoms.
  25. ncbi [Blastocystis hominis and bowel diseases]
    Sebnem Ustun
    Ege Universitesi Tip Fakultesi, Gastroenteroloji Bilim Dali, Izmir
    Turkiye Parazitol Derg 30:72-6. 2006
    b>Blastocystis hominis (B. hominis) is a parasite of uncertain role in human disease. It may be identified during a workup for gastrointestinal symptoms, usually in stools. The clinical consequences of B...
  26. ncbi A study on Blastocystis hominis in food-handlers: diagnosis and potential pathogenicity
    Fouad M Fathy
    Department of Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
    J Egypt Soc Parasitol 41:433-53. 2011
    Proper diagnosis of Blastocystis hominis in not performed routinely in medical laboratories of developing countries; consequently clinical significance of this common intestinal protozoon is liable to remain unsettled...
  27. ncbi In vitro culture of blastocystis hominis in three liquid media and its usefulness in the diagnosis of blastocystosis
    Xu Zhang
    Department of Immunology and Pathogenic Biology, Medical School of Xi an Jiaotong University, PO Box 64, 205 Scarlet Bird Avenue, Xi an 710061, PR China
    Int J Infect Dis 16:e23-8. 2012
    b>Blastocystis hominis is a common protozoan in the human intestinal tract and can cause the so-called blastocystosis characterized by diarrhea...
  28. ncbi Proteaese activity of Blastocystis hominis subtype3 in symptomatic and asymptomatic patients
    Dina Marie Abdel-Hameed
    Department of Parasitology, Faculty of Medicine, Ain Shams University, 13 B Kornesh El Neel, Aghkhan, Shobra, Cairo, Egypt
    Parasitol Res 109:321-7. 2011
    Despite accumulating evidence indicating that Blastocystis hominis is pathogenic and that cysteine proteases are involved in its pathogenesis, few researches discussed the protease activity of B. hominis genetic subtypes...
  29. ncbi No correlation between clinical symptoms and Blastocystis hominis in immunocompetent individuals
    Karin Leder
    Department of Epidemiology and Preventive Medicine, Monash University, The Alfred Hospital, Melbourne, Victoria, Australia
    J Gastroenterol Hepatol 20:1390-4. 2005
    Abstract Background and Aim: Previous reports regarding the clinical significance and pathogenicity of Blastocystis hominis have been contradictory...
  30. ncbi Fecal-oral transmission of the cyst form of Blastocystis hominis in rats
    Hisao Yoshikawa
    Department of Biological Science, Faculty of Science, Nara Women s University, Kitauoya Nishimachi, 630 8506 Nara, Japan
    Parasitol Res 94:391-6. 2004
    The infectivity of two Blastocystis hominis strains, RN94-9 and NIH:1295:1, was examined in 3-week-old SPF Wistar rats...
  31. ncbi Frequency of Blastocystis hominis and other intestinal parasites in stool samples examined at the Parasitology Laboratory of the School of Pharmaceutical Sciences at the São Paulo State University, Araraquara
    Júlio César Miné
    Laboratorio de Parasitologia, Departamento de Ciencias Biologicas, Faculdade de Ciencias Farmaceuticas, Universidade Estadual Paulista, Araraquara, SP, Brazil
    Rev Soc Bras Med Trop 41:565-9. 2008
    ..The present study was developed to evaluate the frequency of Blastocystis hominis infection among inhabitants of the Araraquara region, State of São Paulo, and to compare different methods ..
  32. ncbi Incidence of Blastocystis hominis in faecal samples submitted for routine microbiological analysis
    J J Windsor
    Aberystwyth Public Health Laboratory, Bronglais Hospital, Caradoc Road, Aberystwyth, Ceredigion, SY23 1ER, Wales
    Br J Biomed Sci 59:154-7. 2002
    ..All were stained using a commercial trichrome method. Blastocystis hominis was detected in 96 (6.9%), making it the most common parasite found in the study. Of the B...
  33. ncbi Evidence of waterborne transmission of Blastocystis hominis
    Saovanee Leelayoova
    Department of Parasitology, Phramongkutklao College of Medicine, Ratchathewi, Bangkok, Thailand
    Am J Trop Med Hyg 70:658-62. 2004
    A cross-sectional study was performed in February 2001 to evaluate the prevalence and risk factors of Blastocystis hominis infection in army personnel who resided in an army base in Chonburi, Thailand...
  34. ncbi Infectivity of different genotypes of human Blastocystis hominis isolates in chickens and rats
    Aya Iguchi
    Department of Biological Sciences, Faculty of Science, Nara Women s University, Kitauoya Nishimachi, Nara 630 8506, Japan
    Parasitol Int 56:107-12. 2007
    Most Blastocystis hominis isolates from humans are believed to be potentially zoonotic. This is because B...
  35. ncbi Blastocystis hominis colitis in a haemophilic patient as a cause of lower gastrointestinal bleeding
    J F Lucia
    Haemophilia 13:224-5. 2007
  36. ncbi Prevalence and clinical relevance of Blastocystis hominis in diverse patient cohorts
    O Cirioni
    Institute of Infectious Diseases and Public Health, University of Ancona, Italy
    Eur J Epidemiol 15:389-93. 1999
    The pathogenicity of Blastocystis hominis is extensively debated in the medical literature...
  37. ncbi Programmed cell death in Blastocystis hominis occurs independently of caspase and mitochondrial pathways
    A M A Nasirudeen
    Laboratory of Molecular and Cellular Parasitology, Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597, Singapore
    Biochimie 87:489-97. 2005
    ..previously that a cytotoxic monoclonal antibody (MAb) 1D5 elicits a programmed cell death (PCD) response in Blastocystis hominis and showed that caspase-3-like protease influences but is not essential for PCD in MAb 1D5-treated B...
  38. ncbi [Chronic angioedema and blastocystis hominis infection]
    Dariela Micheloud
    Unidad de Inmunología Clínica, Servicio de Inmunologia, Hospital General Universitario Gregorio Maranon, Madrid, Spain
    Rev Gastroenterol Peru 27:191-3. 2007
    ..This case helps to encourage studies to establish an association between the infection by Blastocystis hominis and the presence of chronic angioedema which does not respond to standard treatment, as this condition can ..
  39. ncbi Chronic urticaria and blastocystis hominis infection: a case report
    A L Pasqui
    Department of Internal Medicine and Immunology, University of Siena Italy
    Eur Rev Med Pharmacol Sci 8:117-20. 2004
    ..Finally coprocolture disclosed the presence of Blastocystis hominis in stool samples thus permitting to associate urticaria to parasitic infection...
  40. ncbi Prevalence of Blastocystis hominis and Strongyloides stercoralis infection in Okinawa, Japan
    Tetsuo Hirata
    Department of Medicine and Therapeutics, Control and Prevention of Infectious Diseases, Faculty of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa, Japan
    Parasitol Res 101:1717-9. 2007
    This study was conducted to clarify the prevalence of Blastocystis hominis and Strongyloides stercoralis infection in Ryukyu University Hospital, Okinawa, Japan, between January 2004 and November 2006...
  41. ncbi Pathogenicity of Blastocystis hominis, a clinical reevaluation
    Selcuk Kaya
    Süleyman Demirel Universitesi Tip Fakültesi, Mikrobiyoloji Anabilim Dali, Isparta, Turkey
    Turkiye Parazitol Derg 31:184-7. 2007
    ..0% and 32.6%. Intestinal symptoms may be seen frequently together with the presence of B. hominis and this protozoan may be regarded as an intestinal pathogen, especially when other agents are eliminated...
  42. ncbi In vitro susceptibility of Blastocystis hominis isolated from patients with irritable bowel syndrome
    J Yakoob
    Department of Medicine, Aga Khan University Hospital, Karachi, Pakistan
    Br J Biomed Sci 61:75-7. 2004
    This study aims to determine the growth pattern and in vitro susceptibility of clinical isolates of Blastocystis hominis to different concentrations of metronidazole, furazolidone and ciprofloxacin...
  43. ncbi [Dot enzyme-linked immunosorbent assay for detection of serum antibody to Blastocystis hominis in humans]
    Shui lian Su
    Gannan Medical College, Ganzhou 341000, China
    Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 25:256-8. 2007
    ..Using stool in vitro cultivation as golden standard, 178 cases were found Blastocystis hominis positive and 144 were negative. Dot-ELISA was used to examine the serum samples with a sensitivity of 92...
  44. pmc Epidemiological survey of Giardia spp. and Blastocystis hominis in an Argentinian rural community
    Marta Cecilia Minvielle
    Catedra de Microbiologia y Parasitologia, Facultad de Ciencias Medicas, Universidad Nacional de La Plata, Argentina
    Korean J Parasitol 42:121-7. 2004
    ..and Blastocystis hominis among a rural population in Buenos Aires Province, Argentina. Of the surveyed population (350), 3...
  45. ncbi The use of the antifungal agent miconazole as an inhibitor of Blastocystis hominis growth in Entamoeba histolytica/E. dispar cultures
    Alessandra Queiroga Gonçalves
    Laboratório de Doenças Parasitárias, Departamento de Medicina Tropical, Fundacao Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
    Rev Inst Med Trop Sao Paulo 49:201-2. 2007
    In regions with high prevalence, Blastocystis hominis is frequently found in association with Entamoeba histolytica/E. dispar in xenic cultures...
  46. ncbi Amoeboid form of Blastocystis hominis - a detailed ultrastructural insight
    T C Tan
    Department of Parasitology, University of Malaya, 50603 Kuala Lumpur, Malaysia
    Parasitol Res 99:737-42. 2006
    The amoeboid form of Blastocystis hominis has been reported infrequently, and its morphological descriptions have yielded conflicting and confusing reports...
  47. ncbi Detection of Blastocystis hominis in unpreserved stool specimens by using polymerase chain reaction
    Rune Stensvold
    Unit of Mycology and Parasitology, Statens Serum Institut, Artillerivej 5, DK 2300 Copenhagen S, Denmark
    J Parasitol 92:1081-7. 2006
    b>Blastocystis hominis is a common enteric parasite of worldwide distribution. Its pathogenetic potential has not yet been established, although numerous case reports suggest that B...
  48. ncbi Chronic urticaria due to Blastocystis hominis
    Ritu Gupta
    Department of Dermatology, St Vincent s Hospital, Sydney, New South Wales, Australia
    Australas J Dermatol 47:117-9. 2006
    ..She was found to have an underlying gastrointestinal infection with Blastocystis hominis. This was thought to be clinically relevant as she had a history of mild chronic diarrhoea...
  49. ncbi [Experimental infection of mice with Blastocystis hominis]
    Fan Rong Yao
    Department of Immunology and pathobiology, Medical School, Xi an Jiaotong University, Xi an 710061, China
    Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 23:444-8. 2005
    To seek a better pathway and proper number of parasites for Blastocystis hominis (B.h) infection in normal and immunocompromised ICR mice.
  50. ncbi Blastocystis hominis and the evaluation of efficacy of metronidazole and trimethoprim/sulfamethoxazole
    Davood Dorostkar Moghaddam
    Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
    Parasitol Res 96:273-5. 2005
    b>Blastocystis hominis is commonly found in the intestinal tract of humans. Although the pathogenicity of this unicellular parasite is controversial, anti-protozoan agents are usually administered to infected individuals...
  51. ncbi Effect of nitazoxanide in persistent diarrhea and enteritis associated with Blastocystis hominis
    Jean Francois Rossignol
    The Romark Institute for Medical Research, Tampa, Florida 33607, USA
    Clin Gastroenterol Hepatol 3:987-91. 2005
    The aim of this study was to evaluate the efficacy of nitazoxanide for the treatment of diarrhea and enteritis associated with Blastocystis hominis as the sole identified pathogen in children and adults from the Nile delta of Egypt.
  52. ncbi Blastocystis hominis--an emerging and imitating cause of acute abdomen in children
    Nesibe Andiran
    Department of Pediatrics, Fatih University Hospital, 06540 Ankara, Turkey
    J Pediatr Surg 41:1489-91. 2006
    ..Just before the decision of laparotomy, both patients were diagnosed as having Blastocystis hominis infection with light microscopic examination of the stools and were treated uneventfully with the ..
  53. ncbi [Impact of blastocystis hominis infection on ultrastructure of intestinal mucosa in mice]
    Hong Wei Zhang
    Department of Occupational Health, College of Public Health, Zhengzhou University, Zhengzhou 450052, China
    Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 24:187-91. 2006
    To observe the ultrastructural change ot intestinal mucosa in mice infected with Blastocystis hominis, and to study the pathogenic mechanism of B. hominis infection.
  54. ncbi Blastocystis hominis among food vendors in Xochimilco markets
    Verónica Cruz Licea
    Public Health Department, School of Medicine, National Autonomous University of Mexico
    Rev Latinoam Microbiol 45:12-5. 2003
    b>Blastocystis hominis is a pathogenic protozoon that lives in the human bowel and causes diarrhea: the mode of transmission is a passive one, through the ingestion of stool-contaminated water or foods that contain infective forms of the ..
  55. ncbi The usefulness of short-term in vitro cultivation for the detection and molecular study of Blastocystis hominis in stool specimens
    Sumeth Termmathurapoj
    Department of Pathology, Phramongkutklao College of Medicine, 315 Ratchawithi Road, Ratchathewi, 10400, Bangkok, Thailand
    Parasitol Res 93:445-7. 2004
    When in vitro cultivation was used as the 'gold standard' for the detection of Blastocystis hominis in stool specimens, simple smear and trichrome staining showed sensitivities of 16.7% and 40.2% and specificities of 94% and 80...
  56. ncbi Complete circular DNA in the mitochondria-like organelles of Blastocystis hominis
    Ivan Wawrzyniak
    Laboratoire Microorganismes, Génome et Environnement, UMR CNRS 6023, Universite Blaise Pascal, 63177 Aubiere Cedex, France
    Int J Parasitol 38:1377-82. 2008
    b>Blastocystis hominis is an anaerobic parasite of the human intestinal tract belonging to the Stramenopile group...
  57. ncbi A placebo-controlled treatment trial of Blastocystis hominis infection with metronidazole
    Luciano Nigro
    Infectious Diseases Unit, University of Catania, c o Ascoli Tomaselli Hospital, via Passo Gravina 185, 95125 Catania, Italy
    J Travel Med 10:128-30. 2003
    b>Blastocystis hominis, previously considered a harmless yeast, is now classified as a protozoan inhabiting the human intestinal tract. The pathogenicity of B. hominis remains controversial and is currently the subject of extensive debate...
  58. ncbi In-vitro cultivation: a sensitive method for detecting Blastocystis hominis
    S Leelayoova
    Department of Parasitology, Phramongkutklao College of Medicine, 315 Ratchawithi Road, Ratchathewi, Bangkok 10400, Thailand
    Ann Trop Med Parasitol 96:803-7. 2002
    Currently, the detection of human infection with Blastocystis hominis is usually based on the examination under a light microscope of faecal samples, either directly, as 'simple smears', or after some form of concentration...
  59. ncbi Hypersensitivity to non-steroidal anti-inflammatory drugs and chronic urticaria cured by treatment of Blastocystis hominis infection
    T Biedermann
    Br J Dermatol 146:1113-4. 2002
  60. ncbi Recent advances in Blastocystis hominis research: hot spots in terra incognita
    Kevin S W Tan
    Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597
    Int J Parasitol 32:789-804. 2002
    ..To date, the morphology of Blastocystis hominis has been extensively studied by light and electron microscopy but all other aspects of its biology remain ..
  61. ncbi Blastocystis hominis modulates immune responses and cytokine release in colonic epithelial cells
    H Y Long
    Institute of Medical Microbiology, Otto von Guericke University, Magdeburg, Germany
    Parasitol Res 87:1029-30. 2001
    An experimental in vitro model has been developed in order to determine whether Blastocystis hominis is able to trigger inflammatory cytokine response in colonic epithelial cells. After 24 h incubation of B...
  62. ncbi Programmed cell death in a human intestinal parasite, Blastocystis hominis
    A M Nasirudeen
    Department of Microbiology, Faculty of Medicine, National University of Singapore, Singapore
    Parasitology 123:235-46. 2001
    ..Our study shows the existence of PCD in an intestinal protozoan, Blastocystis hominis. Light and electron microscopy, biochemical and flow cytometry studies showed apoptosis-like death in B...
  63. ncbi Encystation--survival of Blastocystis hominis in immunocompetent mice abdomen cavity
    Xiao Bo Zhou
    Immunology and Pathogenic Organism Biology Department of Medical School, Xi an Jiaotong University, No 76 Yanta West Road, Xi an, Shaanxi, China
    Parasitol Res 106:1315-20. 2010
    Human Blastocystis hominis were isolated from diarrhea patients' feces and cultured in vitro. Then the cultures were inoculated intraperitoneally to laboratory mice. The B...
  64. ncbi Epidemiology of Blastocystis hominis and other intestinal parasites among the immigrant population in northeastern Taiwan by routine physical examination for residence approval
    Chin Te Lu
    Section of Infectious Disease, Department of Internal Medicine, Lo Tung Poh Ai Hospital, I Lan, Taiwan
    J Microbiol Immunol Infect 42:505-9. 2009
    b>Blastocystis hominis has not been reported as an endemic disease in Taiwan, but high prevalence rates have been found among immigrants. Due to the increasing number of immigrants in Taiwan, B...
  65. ncbi Pathogenic potential of Blastocystis hominis in laboratory mice
    Hala S Elwakil
    Department of Parasitology, Faculty of Medicine, Ain Shams University, Ramsis St, Abbassia, Cairo, Egypt
    Parasitol Res 107:685-9. 2010
    b>Blastocystis hominis is a ubiquitous enteric protozoan whose pathogenic potential is still controversial. This study was carried out to clarify the pathogenecity of B...
  66. ncbi Blastocystis hominis and Dientamoeba fragilis in patients fulfilling irritable bowel syndrome criteria
    Javed Yakoob
    Department of Medicine, Aga Khan University Hospital, Karachi, Pakistan
    Parasitol Res 107:679-84. 2010
    Studies have suggested a possible role for Blastocystis hominis and Dientamoeba fragilis in the etiology of irritable bowel syndrome (IBS). We studied the prevalence of B. hominis and D. fragilis in patients with IBS-diarrhea (IBS-D)...
  67. ncbi Intestinal protozoa in HIV-infected patients: effect of rifaximin in Cryptosporidium parvum and Blastocystis hominis infections
    M Amenta
    Division di Malattie Infettive, Palermo, Italy
    J Chemother 11:391-5. 1999
    ....
  68. ncbi Irritable bowel syndrome in patients with Blastocystis hominis infection
    A Giacometti
    Institute of Infectious Diseases and Public Health, University of Ancona, AN, Italy
    Eur J Clin Microbiol Infect Dis 18:436-9. 1999
    The prevalence of Blastocystis hominis in stool specimens of individuals with gastrointestinal symptoms was evaluated to study a possible link between the protozoan and the irritable bowel syndrome...
  69. ncbi Survival of Blastocystis hominis clones after exposure to a cytotoxic monoclonal antibody
    S W Tan
    Department of Microbiology, Faculty of Medicine, National University of Singapore, Singapore
    Int J Parasitol 27:947-54. 1997
    Our previous studies have shown that monoclonal antibodies (MAbs) to Blastocystis hominis react mainly with carbohydrate epitopes, while 1 MAb (1D5) reacts specifically with a protein of 30.5 kDa...
  70. ncbi Epidemiology of Blastocystis hominis infection in Papua New Guinea: age-prevalence and associations with other parasites
    R W Ashford
    School of Tropical Medicine, Liverpool
    Ann Trop Med Parasitol 86:129-36. 1992
    ..When age- and village-matched pairs were considered, only a weak positive association with E. nana was detectable...
  71. ncbi Secretory and humoral antibody responses to Blastocystis hominis in symptomatic and asymptomatic human infections
    Manal S E Mahmoud
    Department of Parasitology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt
    J Egypt Soc Parasitol 33:13-30. 2003
    ..05) of each from healthy controls nor from each other. The explanations and implications of these results are discussed...
  72. ncbi Irritable bowel syndrome: in search of an etiology: role of Blastocystis hominis
    Javed Yakoob
    Departments of Medicine and Pathology, Aga Khan University Hospital, Karachi, Pakistan
    Am J Trop Med Hyg 70:383-5. 2004
    This study was designed to examine stool specimens of irritable bowel syndrome (IBS) patients for Blastocystis hominis, a common intestinal parasite. One hundred fifty patients were enrolled, 95 IBS cases and 55 controls...
  73. ncbi Pathophysiological variability of different genotypes of human Blastocystis hominis Egyptian isolates in experimentally infected rats
    Eman M Hussein
    Department of Parasitology, Faculty of Medicine Suez Canal University, P O Box 41111, Ismailia, Egypt
    Parasitol Res 102:853-60. 2008
    The genotyping of Blastocystis hominis clinical isolates obtained from 28 gastrointestinal symptomatic patients and 16 asymptomatic individuals were identified by polymerase chain reaction using sequenced-tagged site (STS) primers...
  74. ncbi Metronidazole induces programmed cell death in the protozoan parasite Blastocystis hominis
    A M A Nasirudeen
    Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117597
    Microbiology 150:33-43. 2004
    Previous studies by the authors have shown that the protozoan parasite Blastocystis hominis succumbed to a cytotoxic monoclonal antibody with a number of cellular and biochemical features characteristic of apoptosis in higher eukaryotes...
  75. ncbi Polymerase chain reaction-based genotype classification among human Blastocystis hominis populations isolated from different countries
    Hisao Yoshikawa
    Department of Biological Science, Faculty of Science, Nara Women s University, Kitauoya Nishimachi, Nara 630 8506, Japan
    Parasitol Res 92:22-9. 2004
    Since the genotype of human Blastocystis hominis isolates is highly polymorphic, PCR-based genotype classification using known sequenced-tagged site (STS) primers would allow the identification or classification of different genotypes...
  76. ncbi Isolation and characterization of the mitochondrion-like organelle from Blastocystis hominis
    A M A Nasirudeen
    Laboratory of Molecular and Cellular Parasitology, Department of Microbiology, Faculty of Medicine, National University of Singapore, 5 Science Drive 2, 117597 Singapore
    J Microbiol Methods 58:101-9. 2004
    b>Blastocystis hominis in an unusual protozoan parasite of the human intestinal tract. Previous studies have described the presence of mitochondrial-like structures despite the anaerobic nature of the organism...
  77. doi Genomic diversity of Blastocystis hominis from patients in southern Iran
    H Motazedian
    Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, P O Box 71345 1735, Shiraz, Iran
    Ann Trop Med Parasitol 102:85-8. 2008
  78. ncbi Clinical characteristics and endoscopic findings associated with Blastocystis hominis in healthy adults
    Te Li Chen
    Section of Infectious Diseases, Department of Medicine, Taipei Veterans General Hospital, National Yang Ming University, Taipei, Taiwan, Republic of China
    Am J Trop Med Hyg 69:213-6. 2003
    Ninety-nine individuals with stools positive for Blastocystis hominis but negative for other parasites were identified from medical records of healthy adults who had received a physical examination at Taipei Veterans General Hospital from ..
  79. ncbi A possible link between subtype 2 and asymptomatic infections of Blastocystis hominis
    Funda Dogruman-Al
    Department of Medical Microbiology, Gazi University School of Medicine, Ankara, Turkey
    Parasitol Res 103:685-9. 2008
    b>Blastocystis hominis is one of the most common eukaryotic organisms in the intestinal tract of humans, while its pathogenic potential is still controversial...
  80. ncbi Hematological effects of Blastocystis hominis infection in male foreign workers in Taiwan
    H S Cheng
    Institute of Environmental and Occupational Health, Medical College, National Cheng Kung University, No 1, Dashiue Road, 701 Dung Chiu, Tainan, Taiwan
    Parasitol Res 90:48-51. 2003
    b>Blastocystis hominis found in stool specimens has been the most frequently identified parasite among foreign workers from Southeast Asia in Taiwan since 1992. The prevalence of B. hominis was 14.1% in this study...
  81. ncbi [Blastocystis hominis and diarrhea]
    Germán Ramírez Olivencia
    Med Clin (Barc) 129:598; author reply 598. 2007
  82. ncbi [Blastocystis hominis infection and diarrhoea]
    Juan Cuadros
    Med Clin (Barc) 128:638. 2007
  83. ncbi Intestinal protozoa and helminths among Terena Indians in the State of Mato Grosso do Sul: high prevalence of Blastocystis hominis
    José Ivan Albuquerque Aguiar
    Departamento de Medicina Interna, Universidade Federal do Mato Grosso do Sul, Campo Grande, MS
    Rev Soc Bras Med Trop 40:631-4. 2007
    ..5% were infected with at least one intestinal parasite or commensal. Protozoa predominated. Blastocystis hominis (40.9%), Entamoeba coli (33.2%) and Entamoeba histolytica/Entamoeba dispar (31.6%) were the most common...
  84. ncbi [Investigation of intestinal parasites in residents of the Kayseri Karpuzsekisi basin]
    Izzet Sahin
    Erciyes Universitesi Tip Fakültesi Parazitoloji Anabilim Dali, Kayseri, Turkey
    Turkiye Parazitol Derg 30:178-80. 2006
    ..The parasites detected were as follows: Blastocystis hominis, 82 (34.16%); Enterobius vermicularis, 37 (15.41%); Entamoeba coli 26, (10.83%); Entamoeba hartmanni, 10 (4...
  85. ncbi Morphology and reproductive mode of Blastocystis hominis in diarrhea and in vitro
    X Zhang
    Department of Immunology and Pathogenic Biology, Medical School of Xi an Jiaotong University, P O Box 64, 205 Scarlet Bird Avenue, Xi an, 710061, People s Republic of China
    Parasitol Res 101:43-51. 2007
    The in vitro culture of Blastocystis hominis in Roswell Park Memorial Institute (RPMI) 1,640 medium containing 20% calf serum is described. The morphological and reproductive mode studies of B...
  86. doi Amoebic liver abscess or is it?
    K C Hu
    Division of Gastroenterology, Department of Internal Medicine, Mackay Memorial Hospital, Mackay Medicine, Nursing and Management College, Taipei, Taiwan
    Gut 57:627, 683. 2008
  87. ncbi Prevalence of intestinal parasites among primary schoolchildren in Derna District, Libya
    Gazala A Sadaga
    Department of Biology, Faculty of Science, Omar El Mouktar University, Derna, Libya
    J Egypt Soc Parasitol 37:205-14. 2007
    ..These parasites were Giardia lamblia (12.7%), Blastocystis hominis (6.7%), Entamoeba histolytica/ Entamoeba dispar (6.6%), Entamoeba coli (3.2%), E. hartmanni (1...
  88. ncbi [Observations on Blastocystis hominis and Cyclospora cayetanensis in routine parasitological examinations]
    Ruth Semira Rodríguez Alarcón
    Laboratório de Investigação Médica, Parasitologia, Hospital das Clinicas, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP
    Rev Soc Bras Med Trop 40:253-5. 2007
    ..The methods of Faust et al. and of spontaneous sedimentation in water are not enough to identify Blastocystis hominis. Significant percentage presence of this protozoan was found, especially when staining with iron ..
  89. ncbi Frequency of Giardia lamblia among children in Dohuk, northern Iraq
    A T al-Saeed
    Department of Microbiology, College of Medicine, University of Dohuk, Iraq
    East Mediterr Health J 12:555-61. 2006
    ..9%); boys had a higher rate than girls. Some infected samples (70/486) showed double or triple infections and G. lamblia was combined with Hymenolepis nana, Blastocystis hominis, Entamoeba histolytica and Iodamoeba buetschlii.
  90. ncbi [Blastocystosis: a high prevalence of cases found in patients from Health Center of Soledad, Anzoategui State, Venezuela]
    Virma Velásquez
    Grupo de Parasitosis Intestinal, Departamento de Parasitologia y Microbiologia, Escuela de Ciencias de la Salud, Universidad de Oriente, Ciudad de Bolívar, Estado Bolívar 800 1A, Venezuela
    Rev Soc Bras Med Trop 38:356-7. 2005
    The parasitological examination of fecal samples from 98 patients from an Ambulatory Health Center of Soledad, Anzoategui, Venezuela revealed a rather high proportion of results positive for Blastocystis hominis (46.9%).
  91. ncbi Protozoon infections and intestinal permeability
    Hande Dagci
    Department of Parasitology, School of Medicine, University of Ege, 35100 Bornova, Izmir, Turkey
    Acta Trop 81:1-5. 2002
    ..4.47+/-0.65%, P=0.0017). The IP values were 9.91+/-10.05% in Giardia intestinalis group, 6.81+/-2.25% in Blastocystis hominis group, 5.78+/-2.84% in Entamoeba coli group...
  92. ncbi Intestinal parasites in children from three west Texas border communities
    Luis G Escobedo
    New Mexico Dept of Health, 1170 North Solano Drive, Suite L, Las Cruces, NM 88001, USA
    J Sch Health 74:411-3. 2004
  93. ncbi [Blastocystosis: a high proportion of cases found in schoolchildren of São Paulo, State of São Paulo, Brazil]
    Vicente Amato Neto
    Laboratório de Investigação Médica Parasitologia, Departamento de Moléstias Infecciosas e Parasitárias, Hospital das Clinicas, Faculdade de Medicina, Universidade de Sao Paulo
    Rev Soc Bras Med Trop 37:354-6. 2004
    ..from a public institution of São Paulo (SP) revealed a rather high proportion of results positive for Blastocystis hominis. Other protozoan and worm species were markedly scarcer, a peculiar situation according to our judgement...
  94. ncbi [Investigation of intestinal parasites in AIDS patients]
    Ozden Büyükbaba Boral
    Istanbul Universitesi Istanbul Tip Fakultesi, Mikrobiyoloji ve Klinik Mikrobiyoloji Anabilim Dali, Capa, Istanbul
    Mikrobiyol Bul 38:121-8. 2004
    ..In 2 (9%) of these 23 patients G. lamblia were detected, while Isospora belli, Blastocystis hominis, Entamoeba histolytica, Strongyloides stercoralis and Trichuris trichiura were detected in one patient each...
  95. ncbi Protozoal infections in the developmentally disabled: often overlooked cause of rectal digging and fecal smearing
    Nancy C Brahm
    Ann Pharmacother 38:1542. 2004
  96. ncbi Blastocystis hominis--an emerging cause of diarrhoea in renal transplant recipients
    K Rao
    Department of Microbiology, Sri Ramachandra Medical College and Research Institute, Porur, Chennai 600 116
    J Assoc Physicians India 51:719-21. 2003
    b>Blastocystis hominis is an intestinal protozoan that is emerging as an important cause of diarrhea in the immunosuppressed population. We report two cases of diarrhea caused by this organism in renal transplant recipients...
  97. ncbi [Blastocystosis: nitazoxanide as a new therapeutic option]
    Sergio Cimerman
    3ra Unidade de Internação, Instituto de Infectologia Emilio Ribas, Sao Paulo, SP, Brasil
    Rev Soc Bras Med Trop 36:415-7. 2003
    ..case of a patient with AIDS and severe immunosuppression who developed diarrhea due to a vacuolar stage of Blastocystis hominis. The patient was treated with nitazoxanide, a 5-nitrothiazole broad-spectrum antiparasitic agent...
  98. ncbi [50-year-old patient returning from Hawaii with changed stool habits. Blastocystis hominis]
    T Estlinbaum
    Medizinische Universitätspoliklinik, Kantonsspital Basel
    Praxis (Bern 1994) 91:936-8. 2002
  99. ncbi Remission of delayed pressure urticaria after eradication of Blastocystis hominis
    Nicoletta Cassano
    Acta Derm Venereol 85:357-8. 2005
  100. ncbi Molecular characterization of Blastocystis isolates in the Philippines by riboprinting
    Windell L Rivera
    Institute of Biology, College of Science, University of the Philippines, Diliman, Quezon City 1101, Philippines
    Parasitol Res 96:253-7. 2005
    ..These results demonstrate the genetic heterogeneity of Blastocystis in the Philippines and a support to the idea of the organism's zoonotic potential...
  101. ncbi Detection of Dientamoeba fragilis and Blastocystis hominis using a simple staining method
    J J Windsor
    National Public Health Service for Wales, Microbiology Aberystwyth, Bronglais Hospital, Caradoc Road, Aberystwyth, Ceredigion SY23 1ER, Wales
    Br J Biomed Sci 63:27-8. 2006

Research Grants1

  1. Primate enteroviruses transmission in Bangladesh
    Lisa Jones Engel; Fiscal Year: 2007
    ..Ultimately, this data will provide insight into the potential emergence of NHP-borne pathogens and help to deter the spread of emerging zoonotic threats. [unreadable] [unreadable]..