R A Valdez
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Explore the profile of R A Valdez including associated specialties, affiliations and a list of published articles.
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Articles
47
Citations
721
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Recent Articles
11.
Vacchina P, Valdez R, Gomez Y, Revelli S, Romano M
J Steroid Biochem Mol Biol
. 2008 Jul;
111(3-5):282-6.
PMID: 18640275
American Trypanosomiasis is caused by the hemoflagellate Trypanosoma cruzi (T. cruzi) and affects millions of persons causing variable degrees of digestive and heart disturbances. As far as we concerned, T....
12.
Jimenez P, Valdez R, Romano M
J Steroid Biochem Mol Biol
. 2006 Apr;
99(4-5):203-8.
PMID: 16644209
Previous in vitro experiments showed that both, Taenia crassiceps and Taenia solium cysticerci have the ability to metabolize exogenous androstenedione to testosterone. Here we evaluate on the capacity of both...
13.
Valdez R, Jimenez P, Cartas A, Gomez Y, Romano M
Parasitol Res
. 2006 Jan;
98(5):472-6.
PMID: 16416116
Cysticerci from Taenia solium develop in the pig muscle and cause severe diseases in humans. Here we report on the capacity of T. solium cysticerci to synthesize sex steroid hormones....
14.
Romano M, Valdez R, Cartas A, Gomez Y, Larralde C
J Steroid Biochem Mol Biol
. 2003 Aug;
85(2-5):221-5.
PMID: 12943707
Many examples of reciprocal endocrine interactions between parasites and hosts have been found in insects, arthropods and mammals. Cysticercosis produced by Taenia solium metacestodes is a widely distributed parasite infection...
15.
Goff W, Johnson W, Tuo W, Valdez R, Parish S, Barrington G, et al.
Ann N Y Acad Sci
. 2002 Oct;
969:164-8.
PMID: 12381584
There is a strong innate immunity in calves to infection with Babesia bovis. Interleukin (IL)-12 and IL-10 have been shown in vitro to be important immunoregulatory cytokines. Here we demonstrate...
16.
Goff W, Johnson W, Parish S, Barrington G, Elsasser T, Davis W, et al.
Vet Immunol Immunopathol
. 2002 Jan;
84(3-4):237-51.
PMID: 11777537
The requirement for IFN-gamma and/or TNF-alpha as co-stimulants with Babesia bovis merozoites for nitric oxide (NO) production was examined, as well as the regulatory role of IL-4 and IL-10. Purified...
17.
Goff W, Johnson W, Parish S, Barrington G, Tuo W, Valdez R
Parasite Immunol
. 2001 Oct;
23(9):463-71.
PMID: 11589775
Young calves possess a strong innate immunity against Babesia bovis infection that lasts for approximately 6 months after birth and is abrogated with the removal of the spleen. This immunity...
18.
Valdez R, McGuire T, Brown W, Davis W, Knowles D
Immunology
. 2001 May;
102(4):426-33.
PMID: 11328376
In vivo depletion of lymphocyte subsets is a direct approach used for dissection of the mechanisms of protective immunity. Long-term in vivo depletion of bovine T lymphocyte subpopulations with monoclonal...
19.
Valdez R, McGuire T, Brown W, Davis W, Knowles D
Ann N Y Acad Sci
. 2001 Feb;
916:233-6.
PMID: 11193625
Thymectomized calves were selectively depleted of CD4+ T lymphocytes with a monoclonal antibody (mAb) specific for the bovine CD4 monomer (ILA-11). Calves were treated with high loading doses of ILA-11...
20.
Gomez Y, Valdez R, Larralde C, Romano M
J Steroid Biochem Mol Biol
. 2000 Nov;
74(3):143-7.
PMID: 11086233
Sex hormones are known to modulate immune responses and may be implicated in sex associated susceptibilities to infections. Taenia crassiceps cysticerci grow to larger numbers in female mice than in...