Research Topics
| Mark E WesthusinSummaryAffiliation: Texas A and M University Country: USA Publications
Research Grants
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Detail Information
Publications
Rescuing valuable genomes by animal cloning: a case for natural disease resistance in cattleM E Westhusin
Texas A and M University, College of Veterinary Medicine and Biomedical Sciences, College Station, TX, USA
J Anim Sci 85:138-42. 2007..Furthermore, in vitro assays performed to date indicate this bull is naturally resistant to B. abortus, Mycobacterium bovis, and Salmonella typhimurium, as was the original genetic donor...
Cloning to reproduce desired genotypesM E Westhusin
Departments of Veterinary Physiology and Pharmacology, Anatomy and Public Health, College of Veterinary Medicine, Texas A and M University, College Station, TX 77843, USA
Theriogenology 55:35-49. 2001..The ability to reproduce any desired genotype by cloning will ultimately depend on the amount of time and resources invested in research...
Effects of early pregnancy diagnosis by palpation per rectum on pregnancy loss in dairy cattleJuan E Romano
Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A and M University, College Station, TX 77843, USA
J Am Vet Med Assoc 239:668-73. 2011..To determine the effect of palpation per rectum (PPR) by use of 1 or 2 fetal membrane slips (FMSs) for pregnancy diagnosis during early gestation on pregnancy loss in dairy cattle...
Early pregnancy diagnosis by palpation per rectum: influence on embryo/fetal viability in dairy cattleJuan E Romano
Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A and M University, College Station, TX 77845, USA
Theriogenology 67:486-93. 2007..025), but was not different (P>0.05) between PAL (14.7%; 38/258) and NPAL (13.4%; 35/262). In conclusion, PPR between days 34 and 41 of pregnancy using the fetal membrane slip technique did not affect embryo/fetal viability...
Examination of DNA methyltransferase expression in cloned embryos reveals an essential role for Dnmt1 in bovine developmentMichael C Golding
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A and M University, College Station, TX 77843 4466, USA
Mol Reprod Dev 78:306-17. 2011..Our results indicate an essential role for Dnmt1 during bovine preimplantation development, and suggest proper transcriptional reprogramming of this gene family in SCNT embryos...
Cloning of exotic/endangered species: desert bighorn sheepJames Buck Williams
Departmetn of Veterinary Physiology and Pharmacology, Texas A and M University, College Station, USA
Methods Mol Biol 348:169-82. 2006..Animal care and welfare issues raised that are unique to exotic and endangered species also are raised. In this chapter, the methods used in attempts to clone the wild animal species of Desert Bighorn Sheep are described...
Cloning of GJA1 (connexin43) and its expression in canine ovarian follicles throughout the estrous cycleLauri A Willingham-Rocky
Department of Veterinary Integrative Biosciences, Texas A and M University, College Station, TX, USA
Gene Expr Patterns 7:66-71. 2007....
Effects of stage of oestrous cycle and progesterone supplementation during culture on maturation of canine oocytes in vitroL A Willingham-Rocky
Department of Veterinary Physiology and Pharmacology, Texas A and M University, College of Veterinary Medicine, College Station, Texas 77843 4466, USA
Reproduction 126:501-8. 2003..However, stage of oestrous cycle is a key factor in the selection criteria for meiotically competent canine oocytes for use in in vitro experiments...
A simple salt solution medium supplemented with yolk plasma and lactate (YPLM) supports development of preimplantation bovine embryos in vitroY M Elhassan
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station 77843 4466, USA
Anim Reprod Sci 57:153-66. 1999..In conclusion, YP, with the advantage of being clearer than EY, is capable of sustaining embryo development to the blastocyst stage in a simple salt solution of NaCl, KCl and NaHCO3 supplemented with hemicalcium L-lactate...
Potential for cloning dogsM E Westhusin
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station, TX 77845, USA
J Reprod Fertil Suppl 57:287-93. 2001..However, significant investment into additional research is required, especially in the areas of in vitro maturation of oocytes and control of the oestrous cycle of bitches...
Production of nuclear transfer horse embryos by Piezo-driven injection of somatic cell nuclei and activation with stallion sperm cytosolic extractY H Choi
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station, TX 77843, USA
Biol Reprod 67:561-7. 2002..that direct nuclear injection using the Piezo drill is an efficient method for nuclear transfer in horse and cattle oocytes and that sperm extract can efficiently activate horse oocytes both parthenogenetically and after nuclear transfer..
Amino acid concentrations in fluids from the bovine oviduct and uterus and in KSOM-based culture mediaY M Elhassan
Department of Veterinary Physiology and Pharmacology, Texas A and M University, College Station 77843 2471, USA
Theriogenology 55:1907-18. 2001..The particular pattern of amino acid concentrations may be an important factor to be considered for the improvement of embryo culture media...
Development rates of male bovine nuclear transfer embryos derived from adult and fetal cellsJ R Hill
Department of Veterinary Physiology and Pharmacology, Department of Large Animal Medicine and Surgery, Texas A and M University, College Station, Texas 77843, USA
Biol Reprod 62:1135-40. 2000..Serum starvation of these adult donor cells did not improve development rates of NT embryos to blastocyst, but when fetal cells were serum-starved, there was a significant increase in development to blastocyst...
Role of cumulus cells on in vitro maturation of canine oocytesT Otoi
Department of Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station, TX, USA
Reprod Domest Anim 42:184-9. 2007....
Bovine nuclear transfer embryo development using cells derived from a cloned fetusJ R Hill
Department of Veterinary Physiology and Pharmacology, Texas A and M University, College Station, TX 77843 4466, USA
Anim Reprod Sci 67:17-26. 2001..Further studies on this and other recloned fetuses are necessary to determine whether the failure to produce live offspring was a result of inadequate sample size or due to the cell type selected...
In vitro development of equine nuclear transfer embryos: effects of oocyte maturation media and amino acid composition during embryo cultureY H Choi
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station 77843-4466, USA
Zygote 11:77-86. 2003..CZB-C medium may be used for culture of equine embryos with results similar to those obtained with G1.2 medium, thus providing a base medium that may be modified for further study of culture requirements of equine embryos...
Early pregnancy diagnosis by transrectal ultrasonography in dairy cattleJuan E Romano
Large Animal Clinical Sciences, College of Veterinary Medicine, Texas A and M University, College Station, TX 77845, USA
Theriogenology 66:1034-41. 2006..0 and 93.4% (P>0.05). In this study, heifers were diagnosed pregnant earlier than cows, and the maximum sensitivity and negative predictive value were obtained 3 days earlier in heifers than cows (days 26 and 29, respectively)...
Influence of maturation culture period on the development of canine oocytes after in vitro maturation and fertilizationTakeshige Otoi
Department of Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station, TX 77843 4466, USA
Reprod Nutr Dev 44:631-7. 2004....
Evidence for placental abnormality as the major cause of mortality in first-trimester somatic cell cloned bovine fetusesJ R Hill
Department of Veterinary Physiology and Pharmacology, Texas A and M University, College Station, Texas 77843 USA
Biol Reprod 63:1787-94. 2000..Our findings suggest that future research should focus on factors that promote placental and vascular growth and on fetomaternal interactions that promote placental attachment and villous formation...
Activation of equine nuclear transfer oocytes: methods and timing of treatment in relation to nuclear remodelingYoung-Ho Choi
Departments of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A and M University, College Station, Texas 77843-4466, USA
Biol Reprod 70:46-53. 2004..These results indicate that although nuclear remodeling occurs rapidly in equine cytoplasts, early activation does not improve embryonic development after reconstruction...
Analysis of DNA (cytosine 5) methyltransferase mRNA sequence and expression in bovine preimplantation embryos, fetal and adult tissuesMichael C Golding
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine Texas A and M University, College Station, TX 77843 4466, USA
Gene Expr Patterns 3:551-8. 2003....
New commercial opportunities for advanced reproductive technologies in horses, wildlife, and companion animalsC R Long
ViaGen Inc, 3312 Longmire Drive, College Station, TX 77845, USA
Theriogenology 59:139-49. 2003....
Suppression of prion protein in livestock by RNA interferenceMichael C Golding
Watson School of Biological Sciences, Cold Spring Harbor Laboratory, Howard Hughes Medical Institute, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
Proc Natl Acad Sci U S A 103:5285-90. 2006....
Research Grants
- Production of New Models for Biomedical Research by RNAiMark Westhusin; Fiscal Year: 2006..Success of this project will lead to techniques which can be applied to a wide variety of different animal species, greatly expanding their usefulness as models for research involving human health and disease. ..
- Functional Analysis of the Embryonic Epigenome in a Non-rodent ModelMark E Westhusin; Fiscal Year: 2010....
