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Seasonal prevalence of gastrointestinal nematodes of beef calves grazed on irrigated pastures in the lower Sacramento Valley of California.
1988
Charles T.P. | Baker N.F.
Proteins specified by bovine herpesvirus-2.
1988
Adams S.W. | Balachandran N. | Hutt Fletcher L.M.
Fiber type, fiber size, and capillary geometric features of the semitendinosus muscle in three types of dogs.
1988
Rosenblatt J.D. | Kuzon W.M. Jr. | Pynn B.R. | Plyley M.J. | McKee N.H.
The fiber type, fiber size, and capillary geometric features were determined from the center of the proximal half of the left and right semitendinosus muscles in 5 mixed-breed dogs, 5 hound-type dogs, and 5 Beagles. There were no significant differences between the left and right muscles of each dog. Comparisons among the 3 groups of dogs revealed that the hound-type dogs had the largest fibers (type I and type II); however, the 3 groups were similar in their fiber-type percentages and their capillary geometric features.
Показать больше [+] Меньше [-]Intramedullary pressure in canine long bones.
1988
Bauer M.S. | Walker T.L.
Effect of trenbolone and testosterone on the plasma elimination rates of sulfamethazine, trimethoprim, and antipyrine in female dwarf goats.
1988
Miert A.S.J.P.A.M. van | Peters R.H.M. | Basudde C.D.K. | Nijmeijer S.N. | Duin C.T.M. van | Gogh H. van | Korstanje C.
Plasma elimination rates of sulfamethazine (100 mg/kg of body weight, IV), trimethoprim (20 mg/kg, IV), and antipyrine (35 mg/kg, IV) were studied in adult female dwarf goats (n = 5) before and after implantation with trenbolone acetate (5 mg/kg). Pretreatment with trenbolone caused a significant decrease in the elimination rate of the drugs tested: for sulfamethazine, 5 times; for antipyrine, 3 times; and for trimethoprim, 2 times. After treatment with testosterone (1 mg/kg, SC, twice weekly for 2.5 weeks), female goats (n = 5) had a similar decrease in the elimination rate of sulfamethazine. Other induced effects included a change in social behavior, a lower voice, and the development of a typical billy goat-like odor. Plasma creatinine concentrations after androgen administration were significantly higher than those before androgen administration; changes were not observed in plasma urea values. Because of the differences observed, we believe that more attention should be paid to the effects of androgenic agents on drug kinetic properties, with particular reference to studies on clinical efficacy, side effects, and drug residues in food products.
Показать больше [+] Меньше [-]Peanut agglutinin as a surface marker for canine T lymphocytes.
1988
Turnwald G.H. | McClure J.J. | Powell M.D. | Shao K.P.P.
Peanut agglutinin (PNA) and surface immunoglobulin (SIg) were investigated as markers for T and B lymphocytes in blood and lymphoid tissues of dogs of various ages. In the blood study, 4 age groups (n = 8 dogs/group) were used. The mean (+/- SD) percentages of PNA-positive (PNA +) cells were 68.4 +/- 8.6% (group 1, < 1 year old), 70.3 +/- 9.2% (group 2, 1 to 2 years old), 72.0 +/- 3.7% (group 3, 5 to 6 years old), and 63.8 +/- 10.1% (group 4, 10 to 11 years old). The mean percentages of SIg-positive (SIg+) cells in blood were 32.1 +/- 10.6% (group 1), 43.2 +/- 7.0% (group 2), 34.3 +/- 4.8% (group 3), and 35.0 +/- 6.8% (group 4). The mean total percentages of PNA+ and SIg+ cells were 100 +/-6% (group 1), 113.5 +/- 4.9% (group 2), 106.3 +/- 5.3% (group 3), and 98.9 +/- 9.2% (group 4). The proportions of PNA+ and SIg+ cells in dogs of group 2 were significantly (P < 0.05) different from those in dogs of the other groups. Serial changes in PNA+ and SIg+ cells were investigated in blood of 6- to 29-week-old pups (n = 8). A significant (P < 0.05) transient decrease in PNA+ cells and a corresponding increase in SIg+ cells was observed in pups between 14 and 17 weeks old. Lymphoid tissue specimens and blood samples were obtained from 2- to 6-month-old dogs (n = 11) and from 6- to 12-month-old dogs (n = 10). Percentages reflected the combined data from both groups because there were no significant differences between the 2 age groups. The mean percentages of PNA+ cells were: blood, 68.4 +/- 8.6%; thymus, 86.6 +/- 16.3%; spleen, 29.5 +/-16.0%; lymph node, 48.5 +/- 16.0%; and bone marrow, 30.8 +/- 26.4%. The mean percentage of SIg+ cells were: blood, 32.1 +/- 10.6%; thymus, 3.1 +/- 5.5%; spleen, 69.3 +/-10.3%; lymph node, 55.4 +/- 15.2%; and bone marrow, 65.4 +/- 22.4%. The procedure to identify T lymphocytes in blood and lymphoid tissue was easy to perform, was reproducible, and could be performed on as few as 10(6) cells.
Показать больше [+] Меньше [-]Predictive value of tracer studies for 131I treatment in hyperthyroid cats.
1988
Broome M.R. | Turrel J.M. | Hays M.T.
Systemic lupus erythematosus in a colony of dogs.
1988
Monier J.C. | Fournel C. | Lapras M. | Dardenne M. | Randle T. | Fontaine C.M.
Estrone sulfate concentrations as an indicator of fetal demise in horses.
1988
Kasman L.H. | Hughes J.P. | Stabenfeldt G.H. | Starr M.D. | Lasley B.L.
Differential extraction of antigens of Anaplasma marginale.
1988
Adams J.H. | Smith R.D.