Streptococcus dysgalactiae infection in calves     

DP RYAN  JT ROTHWELL  MAZ HORNITZKY 《Australian veterinary journal》1991,68(6):210-210

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Observational study on the occurrence of surgical glove perforation and associated risk factors in large animal surgery          下载免费PDF全文

Nora M. Biermann DVM  JT. McClure DVM  MS  Diplomate ACVIM  Javier Sanchez DVM  PhD  Aimie J. Doyle DVM  MS  Diplomate ACVS 《Veterinary surgery : VS》2018,47(2):212-218

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Mechanistic target of rapamycin is activated in bovine granulosa cells after LH surge but is not essential for ovulation          下载免费PDF全文

PRA da Rosa  AMP Dau  MP De Cesaro  JT dos Santos  BG Gasperin  R Duggavathi  V Bordignon  PBD Gonçalves 《Reproduction in domestic animals》2016,51(5):766-773

The LH surge induces functional and morphological changes in granulosa cells. Mechanistic target of rapamycin (mTOR) is an integrator of signalling pathways in multiple cell types. We hypothesized that mTOR kinase activity integrates and modulates molecular pathways induced by LH in granulosa cells during the preovulatory period. Cows were ovariectomized and granulosa cells collected at 0, 3, 6, 12 and 24 hr after GnRH injection. While RHEB mRNA levels increased at 3 and 6 hr, returning to basal levels by 12 hr after GnRH treatment, RHOA mRNA levels increased at 6 hr and remained high thereafter. Western blot analyses revealed increased S6K phosphorylation at 3 and 6 hr after GnRH injection. Similarly, mRNA levels of ERK1/2, STAR and EGR‐1 were higher 3 hr after GnRH treatment. Rapamycin treatment inhibited mTOR activity and increased AKT activity, but did not alter ERK1/2 phosphorylation and EGR1 protein levels in cultured bovine granulosa cells. Rapamycin also inhibited LH‐induced increase in EREG mRNA abundance in granulosa cells in vitro. However, intrafollicular injection of rapamycin did not suppress ovulation. These findings suggest that mTOR is involved in the control of EREG expression in cattle, which may be triggered by LH surge stimulating RHEB and S6K activity.  相似文献   

Microbial Genomics,DNA, and Pollution: What’s Next?     

Trevors  J. T. 《Water, air, and soil pollution》2009,205(1):111-111

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Environmental Mercury Rising     

Ainza  Carlos  Trevors  Jack  Saier  Milton 《Water, air, and soil pollution》2008,205(1):47-48

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Influence of carbon amendments on soil denitrifier abundance in soil microcosms     

Michelle N. Miller  Catherine E. Dandie  Bernie J. Zebarth  David L. Burton  Claudia Goyer  Jack T. Trevors 《Geoderma》2012

It is known that carbon (C) amendments increase microbial activity in anoxic soil microcosm studies, however the effects on abundance of total and denitrifier bacterial communities is uncertain. Quantitative PCR was used to target the 16S rRNA gene for the total bacterial community, the nosZ functional gene to reflect a broad denitrifier community, and functional genes from narrow denitrifier communities represented by Pseudomonas mandelii and related species (cnorB_P) and Bosea/Bradyrhizobium/Ensifer spp. (cnorB_B). Repacked soil cores were amended with varying amounts of glucose and red clover plant tissue (0–1000 mg C kg^? 1 of soil) and incubated for 96 h. Carbon amendment significantly increased respiration as measured by cumulative CO₂ emissions. Inputs of red clover or glucose at 1000 mg C kg^? 1 of soil caused increased abundance in the total bacteria under the conditions used. There was about an approximate 2-fold increase in the abundance of bacteria bearing the nosZ gene, but only in treatments receiving 500 or 1000 mg C kg^? 1 of soil of glucose or red clover, respectively. Additions of ≥ 500 mg C kg^? 1 soil of red clover and ≥ 250 mg C kg^? 1 of glucose increased cnorB_P-gene bearing denitrifiers. Changes in abundance of the targeted communities were related to C availability in soil, as indicated by soil respiration, regardless of C source. Applications of C amendments at rates that would occur in agricultural soils not only increase microbial activity, but can also induce changes in abundance of total bacterial and denitrifier communities in studies of anoxic soil microcosms.  相似文献   

International and National Security Includes a Sustainable Biosphere     

Jack T. Trevors 《Water, air, and soil pollution》2010,206(1-4):1-2

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Exercises in Human Imagination     

J. T. Trevors  M. H. SaierJr. 《Water, air, and soil pollution》2010,205(1):9-10

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Industry Versus Humanity     

M. H. SaierJr.  J. T. Trevors 《Water, air, and soil pollution》2010,205(1):17-18

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Environmental Mercury Rising     

Carlos Ainza  Jack Trevors  Milton Saier 《Water, air, and soil pollution》2010,205(1):47-48

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