Summary: An anti-infective agent most commonly used in the treatment of urinary tract infections. Its anti-infective action derives from the slow release of formaldehyde by hydrolysis at acidic pH. (From Martindale, The Extra Pharmacopoeia, 30th ed, p173)

Top Publications

  1. Fernando de Goes M, Montes M. Evaluation of silver methenamine method for nanoleakage. J Dent. 2004;32:391-8 pubmed
    The aim of this study was to evaluate nanoleakage patterns following silver methenamine staining of restorations bonded with a total-etch single bottle system, a self-etching primer system and a total-etch single bottle system after ..
  2. Nassar A, Zapata M, Little J, Siddiqui M. Utility of reflex Gomori methenamine silver staining for Pneumocystis jirovecii on bronchoalveolar lavage cytologic specimens: a review. Diagn Cytopathol. 2006;34:719-23 pubmed
    ..Its diagnosis is dependent on identification in bronchoalveolar lavage (BAL) specimens. Gomori's methenamine silver nitrate (GMS) stain has been advocated to highlight the organisms in BAL specimens...
  3. Blix H, Røed J, Sti M. Large variation in antibacterial use among Norwegian nursing homes. Scand J Infect Dis. 2007;39:536-41 pubmed
    ..The urinary prophylactic agent, methenamine, represented nearly half of DDDs used, mean 7.3 DDD/100 bed-d...
  4. Lee B, Bhuta T, Simpson J, Craig J. Methenamine hippurate for preventing urinary tract infections. Cochrane Database Syst Rev. 2012;10:CD003265 pubmed publisher
    b>Methenamine salts are often used as an alternative to antibiotics for the prevention of urinary tract infection (UTI). This review was first published in Issue 1, 2002 and updated in Issue 4, 2007.
  5. Odawara T, Iseki E, Furukawa Y, Suzuki K, Hino H, Kosaka K. Degeneration of Pick bodies visualized by methenamine-silver staining and immunohistochemistry. Neuropathology. 2002;22:180-5 pubmed
    The degeneration process of Pick's bodies (PB) was investigated using methenamine-silver (MS) staining and immunohistochemistry...
  6. Tome Y, Hayashi I, Matsuoka S, Yamamoto M, Upton M, Hirohashi S, et al. A simple and highly reproducible staining method for fungi and other polysaccharide-rich microorganisms in animal tissues. Stain Technol. 1988;63:53-7 pubmed
    ..Grocott's method, in which methenamine-silver nitrate solution is employed, has been widely used for the staining of fungi in tissue sections, but it ..
  7. Mehdinia A, Habib Kazemi S, Zahra Bathaie S, Alizadeh A, Shamsipur M, Mousavi M. Electrochemical studies of DNA immobilization onto the azide-terminated monolayers and its interaction with taxol. Anal Biochem. 2008;375:331-8 pubmed publisher
    ..The results obtained supported the groove binding interaction of taxol with DNA. The modified electrode was used as a sensitive sensor for quantification of taxol in human serum sample. ..
  8. Le Roch N, Douaud F, Havouis R, Delcros J, Vaultier M, Moulinoux J, et al. Dimethylsilane polyamines: cytostatic compounds with potentials as anticancer drugs. II. Uptake and potential cytotoxic mechanisms. Anticancer Res. 2002;22:3765-76 pubmed
    ..Calmodulin antagonism, however, is likely to contribute to their cytotoxic effect. ..
  9. Ghahramani Seno M, Graham I, Athanasopoulos T, Trollet C, Pohlschmidt M, Crompton M, et al. RNAi-mediated knockdown of dystrophin expression in adult mice does not lead to overt muscular dystrophy pathology. Hum Mol Genet. 2008;17:2622-32 pubmed publisher

More Information

Publications102 found, 100 shown here

  1. Stoff H. [Hexa-sabbath. Foreign matter and vital substances, experts and the critical consumer in the FRG during the 1950s and 1960s]. NTM. 2009;17:55-83 pubmed
  2. Kornyshev A, Leikin S. Helical structure determines different susceptibilities of dsDNA, dsRNA, and tsDNA to counterion-induced condensation. Biophys J. 2013;104:2031-41 pubmed publisher
    ..We argue that an electrostatic zipper attraction might be a major or even dominant force in nucleic acid condensation. ..
  3. Roden A, Schuetz A. Histopathology of fungal diseases of the lung. Semin Diagn Pathol. 2017;34:530-549 pubmed publisher
    ..While many of the fungi can be identified in tissue, especially if using histochemical stains such as Grocott's Methenamine Silver (GMS) stain and/or Periodic Acid Schiff (PAS) stain, in some cases, these stains are negative and the ..
  4. Ali A, Chertoff J, Harden C, Wakefield D, WYNNE J. Stop Being So Sensitive: An Exceptionally Rare Report of Ustekinumab-Induced Sub-acute Hypersensitivity Pneumonitis. Turk J Anaesthesiol Reanim. 2017;45:313-317 pubmed publisher
    ..with occasional ill-defined granulomas that stained negative for Acid Fast Bacilli (AFB) and Grocott's methenamine (GMS) appeared to be consistent with hypersensitivity pneumonitis...
  5. Kelly S, Rhodes C, Lofthouse J, Anderson D, Burwood C, Dennis M, et al. Detection of sugar syrups in apple juice by delta(2)H per thousand and delta(13)C per thousand analysis of hexamethylenetetramine prepared from fructose. J Agric Food Chem. 2003;51:1801-6 pubmed
    ..The differences between the delta(2)H per thousand and delta(13)C per thousand values of the 100 authentic apple juices and beet and cane commercial sugar syrups permit their addition to be reliably detected. ..
  6. van Laarhoven H, Willemsen J, Ross H, Beex L, Lenders J, Sweep F. Pitfall in HPLC assay for urinary metanephrines: an unusual type of interference caused by methenamine intake. Clin Chem. 2004;50:1097-9 pubmed
  7. Masunaga S, Tano K, Nakamura J, Watanabe M, Kashino G, Takahashi A, et al. Usefulness of hexamethylenetetramine as an adjuvant to radiation and cisplatin in the treatment of solid tumors: its independency of p53 status. J Radiat Res. 2010;51:27-35 pubmed
    ..Therefore, the use of HMTA as an adjuvant to radiation or cisplatin might be promising in curing solid tumors with large fraction of hypoxic cells and also with frequent loss-of-function in p53. ..
  8. Figueiredo J, Pesce H, Gioso M, Figueiredo M. The histological effects of four endodontic sealers implanted in the oral mucosa: submucous injection versus implant in polyethylene tubes. Int Endod J. 2001;34:377-85 pubmed
    ..The sealers elicited various responses when in direct contact with the surrounding tissues: the calcium hydroxide-containing sealer had enhanced healing when compared to the other sealers. ..
  9. Jensen J. Vibrational frequencies and structural determinations of hexamethylenetetraamine. Spectrochim Acta A Mol Biomol Spectrosc. 2002;58:1347-64 pubmed
    ..It is possible that the observed frequency shifts are the result of a Fermi resonance condition. ..
  10. Hu J, Li F, Wang K, Han D, Zhang Q, Yuan J, et al. One-step synthesis of graphene-AuNPs by HMTA and the electrocatalytical application for O2 and H2O2. Talanta. 2012;93:345-9 pubmed publisher
    ..The AuNPs are well-dispersed on graphene nanosheets in narrow size range. The nanocomposites have excellent electrocatalytical properties for catalytic reduction of O(2) and H(2)O(2). ..
  11. Reid R, Wilson D, Chau K, Heithersay G, Heijkoop P. Tissue responses to Hydron, assessed by intraosseous implantation. Int Endod J. 1992;25:192-8 pubmed
    ..Bone formed in very close apposition to the polymerized Hydron, whereas a soft tissue capsule separated the regenerated bone from implants of AH26 and Teflon. ..
  12. Greenwood D, Slack R. The antibacterial activity of hexamine (methenamine), hexamine hippurate and hexamine mandelate. Infection. 1981;9:223-7 pubmed
    ..No systematic difference was found in the activity of the three hexamine compounds, but a similar effect was achieved by a very much lower concentration of ampicillin...
  13. Reid R, Abbott P, McNamara J, Heithersay G. A five-year study of Hydron root canal fillings. Int Endod J. 1992;25:213-20 pubmed
    ..This study indicated that Hydron and gutta-percha/AH-26 root canal fillings were well accepted but, on the basis of radiographic assessment, success with gutta-percha/AH-26 was more predictable. ..
  14. Li J, Ni Y, Liao K, Hong J. Hydrothermal synthesis of Ni(12)P(5) hollow microspheres, characterization and photocatalytic degradation property. J Colloid Interface Sci. 2009;332:231-6 pubmed publisher
    ..Furthermore, research also showed that the as-prepared Ni(12)P(5) hollow spheres could photocatalytically degrade some organic dyes such as Safranine T and Pyronine B under irradiation of 365 nm UV light. ..
  15. Thyssen J, Engkilde K, Lundov M, Carlsen B, Menne T, Johansen J. Temporal trends of preservative allergy in Denmark (1985-2008). Contact Dermatitis. 2010;62:102-8 pubmed publisher
    ..However, the overall burden of preservative allergy seemed to increase. Introduction of new preservatives may add to the burden of contact allergy. ..
  16. Muller A, Verhaegh E, Harbarth S, Mouton J, Huttner A. Nitrofurantoin's efficacy and safety as prophylaxis for urinary tract infections: a systematic review of the literature and meta-analysis of controlled trials. Clin Microbiol Infect. 2017;23:355-362 pubmed publisher
    ..38 in favour of nitrofurantoin, 95% CI 0.30-0.48). Its prophylactic efficacy is superior to that of methenamine hippurate and comparable to that of other antibacterials...
  17. Musher D, Griffith D. Generation of formaldehyde from methenamine: effect of pH and concentration, and antibacterial effect. Antimicrob Agents Chemother. 1974;6:708-11 pubmed
    ..6 mg of methenamine per ml at pH </= 5.7 or >/= 1 mg/ml at pH </= 5.85...
  18. Pendleton C, Jallo G, Quinones Hinojosa A. Early multimodality treatment of intracranial abscesses. World Neurosurg. 2012;78:712-4 pubmed publisher
    ..Although these cases demonstrate a 50% mortality rate, they provide insight into the challenges faced by neurosurgeons treating intracranial abscesses at the turn of the 20th century. ..
  19. Ilyes E, Florea M, Madalan A, Haiduc I, Parvulescu V, Andruh M. A robust metal-organic framework constructed from alkoxo-bridged binuclear nodes and hexamethylenetetramine spacers: crystal structure and sorption studies. Inorg Chem. 2012;51:7954-6 pubmed publisher
    ..The Langmuir surface area was found to be 610 m(2) g(-1). The sorption ability of 1 was investigated using H(2) and CO(2). ..
  20. Vijayanathan V, Lyall J, Thomas T, Shirahata A, Thomas T. Ionic, structural, and temperature effects on DNA nanoparticles formed by natural and synthetic polyamines. Biomacromolecules. 2005;6:1097-103 pubmed
    ..A possible mechanism for the differential effects of temperature on DNA nanoparticles might involve different modes of DNA-polyamine interactions. ..
  21. Le Gac S, Ménand M, Jabin I. Second generation of calix[6]aza-Cryptands: synthesis of heteroditopic receptors for organic ion pairs. Org Lett. 2008;10:5195-8 pubmed publisher
    ..In regard to their functionalization at the 1,3,5-phenolic positions, these compounds constitute the first examples of a second generation of C3 v symmetrical calix[6]azacryptands. ..
  22. Vidal L, Robin O, Parshintsev J, Mikkola J, Riekkola M. Quaternary ammonium-functionalized silica sorbents for the solid-phase extraction of aromatic amines under normal phase conditions. J Chromatogr A. 2013;1285:7-14 pubmed publisher
    ..Finally, 1-alkyl-3-(propyl-3-sulfonate) imidazolium-functionalized silica sorbent was successfully tested for the extraction of wastewater and soil samples. ..
  23. Chacko S, Sunehag A, Sharma S, Sauer P, Haymond M. Measurement of gluconeogenesis using glucose fragments and mass spectrometry after ingestion of deuterium oxide. J Appl Physiol (1985). 2008;104:944-51 pubmed publisher
  24. Davis C, Rantell A. Lower urinary tract infections in women. Br J Nurs. 2017;26:S12-S19 pubmed publisher
    ..This aim of this article is to provide nurses with the information they need to best advise both colleagues and patients on how to manage lower urinary tract infections in women. ..
  25. Bialek R, Ernst F, Dietz K, Najvar L, Knobloch J, Graybill J, et al. Comparison of staining methods and a nested PCR assay to detect Histoplasma capsulatum in tissue sections. Am J Clin Pathol. 2002;117:597-603 pubmed
    ..The Grocott and fluorochrome stains did not differ significantly in detecting fungal elements. The PCR assay unambiguously identified H. capsulatum in tissue sections. ..
  26. Latorre N, Borrego L, Fernandez Redondo V, Garcia Bravo B, Gimènez Arnau A, Sanchez J, et al. Patch testing with formaldehyde and formaldehyde-releasers: multicentre study in Spain (2005-2009). Contact Dermatitis. 2011;65:286-92 pubmed publisher
  27. Shah S, Bui H, Velasco N, Rungta S. Incidental Finding of Cryptococcus on Prostate Biopsy for Prostate Adenocarcinoma Following Cardiac Transplant: Case Report and Review of the Literature. Am J Case Rep. 2017;18:1171-1180 pubmed
    ..Histochemical stains, including Grocott methenamine silver (GMS), and periodic acid-Schiff (PAS) showed abundant round and oval 5-7 µm diameter fungal elements; ..
  28. Shen Y, Zhang X, Lin W, Wan C, Li Q, Jiang Y. Liquid-based cytopathology test as a novel method to identify Aspergillus in patients with pulmonary aspergillosis. Sci Rep. 2017;7:7528 pubmed publisher
    ..of Aspergillus in respiratory samples following Papanicolaou's or Special staining with Grocott's methenamine silver or periodic acid-Schiff staining...
  29. Merget R, Topcu M, Friese K, Vormberg R, Fuchs T, Raulf Heimsoth M, et al. A cross-sectional study of workers in the chemical industry with occupational exposure to hexamethylenetetramine. Int Arch Occup Environ Health. 1999;72:533-8 pubmed
    ..6 (95% CI 0.3; 1.1) mg/m(3) in baggers. High exposures to HMT may cause allergic contact dermatitis. There was no evidence of an increased risk for occupational asthma at mean airborne HMT concentrations below 1 mg/m(3). ..
  30. Pavitrapok C, Williams D. Determination of methenamine, methenamine mandelate and methenamine hippurate in pharmaceutical preparations using ion-exchange HPLC. J Pharm Biomed Anal. 2006;40:1243-8 pubmed
    ..column high-performance liquid chromatography (HPLC) method has been developed for the determination of methenamine in methenamine and methenamine hippurate pharmaceutical preparations...
  31. Lim M, Murray C, Tronic T, deKrafft K, Ley A, deButts J, et al. Copper(I) cyanide networks: synthesis, structure, and luminescence behavior. Part 2. Piperazine ligands and hexamethylenetetramine. Inorg Chem. 2008;47:6931-47 pubmed publisher
    ..3, 8, and 9 are thermochromic due to an additional lower energy emission band, which is absent at 77 K. ..
  32. Kagaya S, Maeba E, Inoue Y, Kamichatani W, Kajiwara T, Yanai H, et al. A solid phase extraction using a chelate resin immobilizing carboxymethylated pentaethylenehexamine for separation and preconcentration of trace elements in water samples. Talanta. 2009;79:146-52 pubmed publisher
    ..003 microg L(-1) (Mn) to 0.28 microg L(-1) (Zn) as the concentration in 500 mL of solution. ..
  33. Moore L, Erstine E, Prayson R. Pituitary aspergillus infection. J Clin Neurosci. 2016;29:178-80 pubmed publisher
    ..and macrophages was accompanied by acute angle branching, angioinvasive hyphae which were highlighted on Gomori methenamine silver staining and were morphologically consistent with Aspergillus species...
  34. Abramovitz L, Lev R, Fuss Z, Metzger Z. The unpredictability of seal after post space preparation: a fluid transport study. J Endod. 2001;27:292-5 pubmed
    ..These results suggest that 3 to 6 mm fillings provided a seal inferior to that of intact root canal fillings. Reduction of the fillings to 3 mm resulted in an unpredictable seal. ..
  35. Lee B, Haran M, Hunt L, Simpson J, Marial O, Rutkowski S, et al. Spinal-injured neuropathic bladder antisepsis (SINBA) trial. Spinal Cord. 2007;45:542-50 pubmed
    To determine whether Methenamine Hippurate (MH) or cranberry tablets prevent urinary tract infections (UTI) in people with neuropathic bladder following spinal cord injury (SCI).
  36. Rodriguez S, Palatinus L, Petricek V, Chapuis G. Growth-induced incommensurability observed in the organic co-crystal hexamethylenetetramine resorcinol. Acta Crystallogr B. 2006;62:1043-50 pubmed
    ..The structure of the low-temperature phase could not be determined owing to the poor quality of the crystals affected by the reconstructive phase transition. ..
  37. Pagano M, Capillo G, Sanfilippo M, Palato S, Trischitta F, Manganaro A, et al. Evaluation of Functionality and Biological Responses of Mytilus galloprovincialis after Exposure to Quaternium-15 (Methenamine 3-Chloroallylochloride). Molecules. 2016;21:144 pubmed publisher
  38. Saminathan M, Thomas T, Shirahata A, Pillai C, Thomas T. Polyamine structural effects on the induction and stabilization of liquid crystalline DNA: potential applications to DNA packaging, gene therapy and polyamine therapeutics. Nucleic Acids Res. 2002;30:3722-31 pubmed
    ..These data show a structural specificity effect of polyamines on liquid crystalline phase transitions of DNA and suggest a possible physiological function of natural polyamines...
  39. Yi W, Cai C. Synthesis of RDX by nitrolysis of hexamethylenetetramine in fluorous media. J Hazard Mater. 2008;150:839-42 pubmed
    ..The fluorous phase containing catalyst could be easily and efficiently recovered for reuse by simple phase separation...
  40. Ota G, Itozaki H. Emission of nuclear quadrupole resonance from polycrystalline hexamethylenetetramine. Solid State Nucl Magn Reson. 2008;33:36-40 pubmed publisher
    ..The emitted patterns were the same as that from a united single magnetic dipole, which fitted well to the estimation based on quadrupole principle axis system. This result is helpful to design an antenna for NQR remote detection...
  41. de Groot A, White I, Flyvholm M, Lensen G, Coenraads P. Formaldehyde-releasers in cosmetics: relationship to formaldehyde contact allergy. Part 1. Characterization, frequency and relevance of sensitization, and frequency of use in cosmetics. Contact Dermatitis. 2010;62:2-17 pubmed publisher
  42. Warshaw E, Raju S, Fowler J, Maibach H, Belsito D, Zug K, et al. Positive patch test reactions in older individuals: retrospective analysis from the North American Contact Dermatitis Group, 1994-2008. J Am Acad Dermatol. 2012;66:229-40 pubmed publisher
    ..Relatively little is known about the epidemiology of allergic contact dermatitis in older individuals...
  43. Saint S, Lipsky B. Preventing catheter-related bacteriuria: should we? Can we? How?. Arch Intern Med. 1999;159:800-8 pubmed
    ..Using these methods, urinary catheter-associated UTI can often be prevented for weeks, but not longer terms...
  44. Rappeneau S, Baeza Squiban A, Marano F, Calvet J. Efficient protection of human bronchial epithelial cells against sulfur and nitrogen mustard cytotoxicity using drug combinations. Toxicol Sci. 2000;58:153-60 pubmed
    ..One of these combinations, NAC + DOX, appeared to be the most interesting, as these agents are already used in human therapy. It exhibited good efficacy in delayed cotreatment (up to 90 min) against SM...
  45. Stankeviciene L, Grigonis A, Matusevicius A, Janusiene L, Stankevicius A. [Antimicrobial action of ammonium salts of fused heterocycles containing ortho-nitrogen]. Medicina (Kaunas). 2003;39 Suppl 2:70-5 pubmed
    ..aeruginosa as well as benzalkonium chloride...
  46. Chen X, Cai C, Luo H, Zhang G. Study on the resonance light-scattering spectrum of anionic dye xylenol orange-cetyltrimethylammonium-nucleic acids system and determination of nucleic acids at nanogram levels. Spectrochim Acta A Mol Biomol Spectrosc. 2005;61:2215-20 pubmed
    ..The lowest limit of determination was 5.31 ng ml(-1), three synthetic samples of yDNA were analyzed satisfactorily...
  47. Middelhoven W, van Doesburg W. Utilization of hexamethylenetetramine (urotropine) by bacteria and yeasts. Antonie Van Leeuwenhoek. 2007;91:191-6 pubmed
    ..Addition of glucose to the latter resulted in growth of some yeasts that overgrew the bacteria. Assimilation of urotropine as sole nitrogen source is very common among yeasts, 46 out of 60 species tested showed this characteristic...
  48. Zakout Y, Salih M, Ahmed H. The effect of fixatives and temperature on the quality of glycogen demonstration. Biotech Histochem. 2010;85:93-8 pubmed publisher
    ..Seventy-two paraffin sections were prepared and stained with periodic acid-Schiff (PAS), hexamine (methenamine) silver and Best's carmine methods...
  49. Osorio R, Hefti A, Vertucci F, Shawley A. Cytotoxicity of endodontic materials. J Endod. 1998;24:91-6 pubmed
    ..All Bond-2 also displayed a high degree of cytotoxicity. CRCS was the best root canal sealer and MTA the best root-end filling material. The outcome was favorable also for Gallium GF2 as a retrofilling material...
  50. Peshkovsky A, Cerioni L, Osan T, Avdievich N, Pusiol D. Three-dimensional high-inductance birdcage coil for NQR applications. Solid State Nucl Magn Reson. 2006;30:75-80 pubmed
    ..The coil's performance was evaluated using a three-dimensional scheme, in which a circularly polarized experiment was combined with a linearly polarized measurement at another frequency, resulting in SNR improvement by 55%...
  51. Shinya Y, Hamada K, Gupta P, Yasuzumi F. Significance of PAM histochemical reaction in delineating macrophages. Okajimas Folia Anat Jpn. 2007;84:11-7 pubmed
    Periodic acid methenamine silver staining has been used for proof of the existence of carbohydrates in both paraffin and resin embedded tissues...
  52. Burgess S, Chandramouli V, Browning J, Schumann W, Previs S. Complicating factors in the application of the "average method" for determining the contribution of gluconeogenesis. J Appl Physiol (1985). 2008;104:1852-3; author reply 1854-5 pubmed publisher
  53. Burton R, Ferrari E, Davey R, Finney J, Bowron D. Relationship between solution structure and phase behavior: a neutron scattering study of concentrated aqueous hexamethylenetetramine solutions. J Phys Chem B. 2009;113:5967-77 pubmed publisher
  54. Shokouhinejad N. Root canal re-treatment of a mandibular second premolar with three root canals: a case report. Aust Endod J. 2009;35:180-2 pubmed publisher
    ..Mandibular premolars show a wide variety of root canal anatomy. This paper describes a case of mandibular second premolar with three root canals that has previously received an incomplete root canal treatment...
  55. Mannherz H, Mazur A, Jockusch B. Repolymerization of actin from actin:thymosin beta4 complex induced by diaphanous related formins and gelsolin. Ann N Y Acad Sci. 2010;1194:36-43 pubmed publisher
    ..Thereby monomeric actin is sequestered from the dynamic assembly and disassembly processes of the actin cytoskeleton that constantly occur intracellularly...
  56. Dowding J, Das S, Kumar A, Dosani T, McCormack R, Gupta A, et al. Cellular interaction and toxicity depend on physicochemical properties and surface modification of redox-active nanomaterials. ACS Nano. 2013;7:4855-68 pubmed publisher
  57. Wu M, Wesselink P. A primary observation on the preparation and obturation of oval canals. Int Endod J. 2001;34:137-41 pubmed
    ..The aim of this study was to observe the existence and assess the quality of obturation of uninstrumented recesses in oval canals...
  58. Ikeda R, Aiyama S, Tsujimura T, Okamoto K. Developmental changes in the fine structure and histochemical properties of mucous cells in the parotid gland of the infant Japanese macaque. Arch Histol Cytol. 2001;64:545-53 pubmed
    ..The mucous cells in the parotid gland of the juvenile Japanese macaque are therefore suggested to be converted into serous cells...
  59. Peters L, van Winkelhoff A, Buijs J, Wesselink P. Effects of instrumentation, irrigation and dressing with calcium hydroxide on infection in pulpless teeth with periapical bone lesions. Int Endod J. 2002;35:13-21 pubmed
    ..The aim of this study was to evaluate the fate of microorganisms in root canals of teeth with infected pulps and periapical bone lesions with and without the use of calcium hydroxide medication...
  60. Bernatoniene R, Stankeviciene L, Stankevicius A, Janusiene L. [Qualitative and quantitative analysis of ammonium salts of hexamethylenetetramine and 1,10-phenanthroline]. Medicina (Kaunas). 2003;39 Suppl 2:60-4 pubmed
    ..The suitability of qualitative methods, such as argentometry, mercurimetry, iodometry, extraction photometric analysis was detected. The results suggest, that the most suitable and precise method is argentometry...
  61. Wada R, Nakano N, Yajima N, Yoneyama T, Wakasaya Y, Murakami C, et al. Granulomatous prostatitis due to Cryptococcus neoformans: diagnostic usefulness of special stains and molecular analysis of 18S rDNA. Prostate Cancer Prostatic Dis. 2008;11:203-6 pubmed publisher
    ..Staining with periodic acid-Schiff, Grocott's methenamine silver and Fontana-Masson revealed yeast-form fungus in the granulomas...
  62. Gangwani M, Aziz M, Munir S, Ali S. Invasive Aspergillosis Involving the Mediastinum in an Immunocompetent Patient: A Case Report. Cureus. 2017;9:e1605 pubmed publisher
    ..bronchoscopic biopsy observed abundant fungal hyphae which were stained with periodic Acid-Schiff and Gomori's methenamine silver. Despite the treatment with antifungal agents, the patient could not be saved...
  63. Pecora J, Cussioli A, Guerisoli D, Marchesan M, Sousa Neto M, Brugnera Junior A. Evaluation of Er:YAG laser and EDTAC on dentin adhesion of six endodontic sealers. Braz Dent J. 2001;12:27-30 pubmed
    ..The Tukey test showed the formation of 5 groups in decreasing order of adhesion: AH Plus, Topseal and Sealer 26, AH 26, Sealer Plus, and Fillcanal (Grossman cement)...
  64. Katanik J, McCabe B, Brunengraber D, Chandramouli V, Nishiyama F, Anderson V, et al. Measuring gluconeogenesis using a low dose of 2H2O: advantage of isotope fractionation during gas chromatography. Am J Physiol Endocrinol Metab. 2003;284:E1043-8 pubmed
    ..This technique takes advantage of the difference in gas chromatographic retention times of naturally labeled HMT and [(2)H]HMT. We discuss the advantage(s) of using a low dose of (2)H(2)O to quantify the contribution of gluconeogenesis...
  65. Mishra M, Thakar Y, Akulwar S, Tankhiwale N, Powar R. Detection of Pneumocystis carinii in induced sputum samples of HIV positive patients. Indian J Med Microbiol. 2006;24:149-50 pubmed
  66. Reza Kermanshahi T, Rhatigan R. Comparison between PAS and GMS stains for the diagnosis of onychomycosis. J Cutan Pathol. 2010;37:1041-4 pubmed publisher
    ..By comparing originally stained PAS slides (i.e. without repeating PAS) with newly stained Grocott methenamine-silver (GMS) slide, D'Hue et al. concluded that GMS is superior to PAS...
  67. Taghdiri M, Saadatjou N, Zamani N, Farrokhi R. Heterogeneous degradation of precipitated hexamine from wastewater by catalytic function of silicotungstic acid in the presence of H2O2 and H2O2/Fe2+. J Hazard Mater. 2013;246-247:206-12 pubmed publisher
    ..A kinetic analysis based on total organic carbon reduction was carried out. The two steps mechanism was proposed for the degradation of hexamine...
  68. Güner E, Kalkan G, Meral E, Baykir M. The triggering role of allergic contact dermatitis in discoid lupus erythematosus. Cutan Ocul Toxicol. 2013;32:194-9 pubmed publisher
  69. Meierhenrich U, Thiemann W, Munoz Caro G, Schutte W, Greenberg J. Simulated cometary matter as a test for enantiomer separating chromatography for use on comet 46P/Wirtanen. Adv Space Res. 2001;27:329-34 pubmed
    ..The combination of the reagent assisted pyrolysis gas chromatographic technique with enantiomer separating chromatography was tested with laboratory-produced simulated cometary matter...
  70. Gil vanova E, Usanov N. [Quantitative assessment of the biological activity of chemicals by soil microbial associations]. Prikl Biokhim Mikrobiol. 2003;39:329-34 pubmed
    ..A method for quantitative assessment of the activity of microbial biocides was proposed, based on the use of natural associations of soil bacteria...
  71. Kawamata S, Kodera H. Reduction of formaldehyde concentrations in the air and cadaveric tissues by ammonium carbonate. Anat Sci Int. 2004;79:152-7 pubmed
  72. Wiwanitkit V. Study of the cost-effectiveness of three staining methods for identification of Pneumocystis carinii in bronchoalveolar lavage fluid. Trop Doct. 2005;35:23-5 pubmed
  73. Sarioglu S, Sis B, Celik A, Tekis D, Kavukcu S, Bora S, et al. Quantitative digital histochemistry with methenamine silver staining in renal allograft biopsies excluding pure chronic allograft nephropathy cases. Transplant Proc. 2006;38:490-1 pubmed
    ..Recently we described a digital quantitative histochemistry method, relying on periodic acid methenamine silver (PAMS) staining to determine the chronic renal lesions...
  74. Hausen B. Contact allergy to pentylene glycol. Dermatitis. 2007;18:99-100 pubmed
  75. Becker L, Bergfeld W, Belsito D, Klaassen C, Hill R, Leibler D, et al. Final report of the amended safety assessment of Quaternium-15 as used in cosmetics. Int J Toxicol. 2010;29:98S-114S pubmed publisher
    ..2% was not a sensitizer. The weight of evidence suggested that a 0.2% concentration is not a sensitizer and that cosmetic products containing Quaternium-15 up to that level are safe...
  76. Bergeron B, Murchison D, Schindler W, Walker W. Effect of ultrasonic vibration and various sealer and cement combinations on titanium post removal. J Endod. 2001;27:13-7 pubmed
    ..There was no statistical difference in retention of posts cemented with either zinc phosphate or Panavia 21, regardless of the sealer used. Additionally ultrasonic vibration increased post retention for both cements...
  77. Saksirisampant W, Eampokalap B, Chantharodevong R, Changthong R. Comparison of methods for identification of Pneumocystis carinii in bronchoalveolar lavage fluid. J Med Assoc Thai. 2002;85 Suppl 1:S407-14 pubmed
    ..If the sporozoites and trophozoites had to be identified, Giemsa stains can be made. In addition, with the methenamine silver nitrate stains, 21 cases (60%) were positive...
  78. Yabuki A, Suzuki S, Matsumoto M, Taniguchi K, Nishinakagawa H. A simple method for the specific detection of Ren-1 renin. Kidney Int. 2002;62:2294-9 pubmed
    ..The present study determined the usefulness of modified periodic acid silver-methenamine (PAM) staining for the specific detection of Ren-1 renin.
  79. Kaszycki P, Koloczek H. Biodegradation of formaldehyde and its derivatives in industrial wastewater with methylotrophic yeast Hansenula polymorpha and with the yeast-bioaugmented activated sludge. Biodegradation. 2002;13:91-9 pubmed
    ..It is concluded that the yeast species may be applied to treat wastewater containing formaldehyde and some of its derivatives as either monocultures or as an integrated, specialized element of the activated sludge biocenosis...
  80. Miles D, Thompson K, Lilley J, Adams A. Immunofluorescence of the epizootic ulcerative syndrome pathogen, Aphanomyces invadans, using a monoclonal antibody. Dis Aquat Organ. 2003;55:77-84 pubmed
  81. Bai Y, Shang W, Dang D, Sun J, Gao H. Synthesis, crystal structure and luminescent properties of one coordination polymer of cadmium(II) with mixed thiocyanate and hexamethylenetetramine ligands. Spectrochim Acta A Mol Biomol Spectrosc. 2009;72:407-11 pubmed publisher
    ..A 2D layer structure is held together with its neighboring ones via a set of hydrogen-bonding interactions to form a 3D supramolecular structure. The luminescent properties of the title complex in the solid state were investigated...
  82. Kireche M, Gimenez Arnau E, Lepoittevin J. Preservatives in cosmetics: reactivity of allergenic formaldehyde-releasers towards amino acids through breakdown products other than formaldehyde. Contact Dermatitis. 2010;63:192-202 pubmed publisher
    ..It has been long accepted that formaldehyde-releaser sensitization is attributable to released formaldehyde. However, clinical studies show the existence of patients allergic to formaldehyde-releasers but not to formaldehyde itself...
  83. Aliev A, Courtier Murias D. Concise NMR approach for molecular dynamics characterizations in organic solids. J Phys Chem A. 2013;117:7855-62 pubmed publisher
    ..Overall, the method allows one to gain insight into the role of noncovalent interactions in solids and their influence on the molecular dynamics...
  84. Orsini A, Medaglia P, Scarpellini D, Pizzoferrato R, Falconi C. Towards high-performance, low-cost quartz sensors with high-density, well-separated, vertically aligned ZnO nanowires by low-temperature, seed-less, single-step, double-sided growth. Nanotechnology. 2013;24:355503 pubmed publisher
    ..e. high sensitivity) quartzes can be further increased by nearly one order of magnitude and thus show the highest ever reported frequency shifts of an admittance resonance in response to immersion in both ethanol and water...
  85. Shaughnessy C, Malajian D, Belsito D. Cutaneous delayed-type hypersensitivity in patients with atopic dermatitis: reactivity to topical preservatives. J Am Acad Dermatol. 2014;70:102-7 pubmed publisher
    ..Patients with atopic dermatitis (AD) have chronic dry skin to which they frequently apply skin care products containing preservatives, and they are predisposed to developing cutaneous delayed-type hypersensitivity...
  86. Gupta M, Mittal A. Integrated biological and advanced oxidation based treatment of hexamine bearing wastewater: Effect of cow-dung as a co-substrate. J Hazard Mater. 2016;308:394-401 pubmed publisher
    ..67 to 4.00, degraded wastewater effectively. Higher proportion of co-substrate to wastewater resulted better degradation. The relationships between nitrate, pH, turbidity and COD are discussed. ..
  87. Yau M, Meyer M. In vivo-in vitro correlations with a commercial dissolution simulator. I: Methenamine, nitrofurantoin, and chlorothiazide. J Pharm Sci. 1981;70:1017-24 pubmed
    Dissolution profiles were determined for nine methenamine, 14 nitrofurantoin, and six chlorothiazide dosage forms using a dissolution simulator. Various in vivo-in vitro correlations were examined...
  88. Baughman R, Liming J. Diagnostic strategies in Pneumocystis carinii pneumonia. Front Biosci. 1998;3:e1-12 pubmed
    ..In addition, the polymerase chain reaction (PCR) is successfully being used in the diagnosis of P. carinii. Overall, these techniques allow the clinician to tailor the diagnostic testing for the individual patient...
  89. Huang F, Tai K, Chou M, Chang Y. Cytotoxicity of resin-, zinc oxide-eugenol-, and calcium hydroxide-based root canal sealers on human periodontal ligament cells and permanent V79 cells. Int Endod J. 2002;35:153-8 pubmed
    ..The purpose of this study was to determine the cytotoxicity of three different types of root canal sealer on human periodontal ligament (PDL) cells and a permanent hamster cell line (V79 cells)...
  90. D Hue Z, Perkins S, Billings S. GMS is superior to PAS for diagnosis of onychomycosis. J Cutan Pathol. 2008;35:745-7 pubmed publisher
    ..We performed a retrospective study comparing the use of PAS and Gomori methenamine silver (GMS) stains for histopathologic diagnosis of onychomycosis.
  91. Yuan X, Yoshimoto K, Nagasaki Y. High-performance immunolatex possessing a mixed-PEG/antibody coimmobilized surface: highly sensitive ferritin immunodiagnostics. Anal Chem. 2009;81:1549-56 pubmed publisher
  92. O Gorman S, Torgerson R. Allergic contact dermatitis of the vulva. Dermatitis. 2013;24:64-72 pubmed publisher
    ..We aimed to describe the incidence of ACD in patients presenting with vulvar symptoms and to identify the allergens of most importance...