A Phase II, Open Label, Randomized Controlled Pilot Study Evaluating Trimethoprim in Patients Commencing Androgen Deprivation Therapy for Prostate Cancer

The researchers hope to learn if Trimethoprim, 150mg taken daily for 3 months, is a safe and effective way to reduce folate levels at time of Androgen Deprivation Therapy (ADT) in men with advanced prostate cancer.
This study will help find out what effects, good and/or bad, this drug has on people who take it and on its effect on the disease. The safety of this drug in humans has been tested in prior research studies; however, some side effects may not yet be known.

Start Date01 Nov 2024

Sponsor / Collaborator

University of Texas Health Science Center At San Antonio

ChiCTR2200066181 / RecruitingPhase 4IIT

A study on the effect of trimethoprim plus thioglycollate gel filling for the prevention of postoperative stricture in large esophageal ESD

Start Date14 Nov 2022

Sponsor / Collaborator-

NCT05063422 / CompletedPhase 1IIT

Retentive Strength of Various Dental Adhesives on Various Types of Residual Ridged

To compare the retentive strength of different form of commercially available denture adhesives (paste, powder and cushion) on different form of residual ridges.
To evaluate the effect of various denture adhesives on efficiency of complete dentures in patients with different alveolar ridges.

Start Date18 Aug 2022

Sponsor / Collaborator

Altamash Institute of Dental Medicine

100 Clinical Results associated with Bacterial DHFR

100 Translational Medicine associated with Bacterial DHFR

0 Patents (Medical) associated with Bacterial DHFR

Literatures (Medical) associated with Bacterial DHFR

01 Apr 2019·Ecotoxicology and Environmental SafetyQ2 · ENVIRONMENTAL SCIENCE & ECOLOGY

Proteomic analysis of oxidized proteins in the brain and liver of the Nile tilapia (Oreochromis niloticus) exposed to a water-accommodated fraction of Maya crude oil

Q2 · ENVIRONMENTAL SCIENCE & ECOLOGY

Article

Author: Matadamas-Martínez, Félix ; Rocha-Gómez, María Alejandra ; Yépez-Mulia, Lilián ; Vega-López, Armando ; Salazar-Coria, Lucía

Crude oil (CO) is a super mixture of chemical compounds whose toxic effects are reported in fish species according to international guidelines. In the current study a proteomic analysis of oxidized proteins (ox) was performed on the brain and liver of Nile tilapia exposed to WAF obtained from relevant environmental loads (0.01, 0.1 and 1.0 g/L) of Maya CO. Results have shown that oxidation of specific proteins was a newly discovered organ-dependent process able to disrupt key functions in Nile tilapia. In control fish, enzymes involved on aerobic metabolism (liver aldehyde dehydrogenase and brain dihydrofolate reductase) and liver tryptophan--tRNA ligase were oxidized. In WAF-treated liver specimens, fructose-bisphosphate aldolase (FBA), β-galactosidase (β-GAL) and dipeptidyl peptidase 9 (DPP-9) were detected in oxidized form. oxDPP-9 could be favorable by reducing the risk associated with altered glucose metabolism, the opposite effects elicited by oxFBA and oxβ-GAL. oxTrypsin showed a clear adverse effect by reducing probably the hepatocyte capacity to achieve proteolysis of oxidized proteins as well as for performing the proper digestive function. Additionally, enzyme implicated in purine metabolism adenosine (deaminase) was oxidized. Cerebral enzymes of mitochondrial respiratory chain complex (COX IV, COX5B), of glycosphingolipid biosynthesis (β-N-acetylhexosaminidase), involved in catecholamines degradation (catechol O-methyltransferase), and microtubule cytoskeleton (stathmin) were oxidized in WAF-treated specimens. This response suggests, in the brain, an adverse scenario for the mitochondrial respiration process and for ATP provision as for ischemia/reoxygenation challenges. Proteomic analysis of oxidized proteins is a promising tool for monitoring environmental quality influenced by hydrocarbons dissolved in water.

15 Nov 2007·Journal of VirologyQ2 · MEDICINE

Identification of the DNA Sequence Interacting with Kaposi's Sarcoma-Associated Herpesvirus Viral Interferon Regulatory Factor 1

Q2 · MEDICINE

Article

Author: Jeong, Kwi Wan ; Choe, Joonho ; Lee, Myung-Shin ; Seo, Taegun ; Park, Junsoo ; Lee, Daeyoup ; Yoo, Seung-Min

ABSTRACTKaposi's sarcoma-associated herpesvirus (KSHV) is the etiological agent of Kaposi's sarcoma. The open reading frame (K9) of KSHV encodes viral interferon regulatory factor 1 (vIRF1), which functions as a repressor of interferon-mediated signal transduction. The amino-terminal region of vIRF1 displays significant homology to the DNA-binding domain of cellular interferon regulatory factors, supporting the theory that the protein interacts with specific DNA sequences. Here, we identify the consensus sequence of vIRF1-binding sites from a pool of random oligonucleotides. Moreover, our data show that vIRF1 interacts with the K3:viral dihydrofolate reductase:viral interleukin 6 promoter region in the KSHV genome.

01 Mar 1987·Analytical BiochemistryQ4 · BIOLOGY

Antibody for detection and quantitation of membrane-associated folate-binding protein from Lactobacillus casei

Q4 · BIOLOGY

Article

Author: Karin S. Vitols ; F.M. Huennekens ; Cheng-Ming Chang ; Stacey A. Minskoff ; Laura E. Pope

Lactobacillus casei cells contain a 25 kDa, membrane-associated, folate-binding protein (fbp), which is a component of the folate transport system. Polyclonal antibody to fbp (anti-fbp) has been prepared, and conditions have been established for detection and quantitation of the protein. Anti-fbp did not block [3H]folate transport or binding in L. casei cells. As judged by Western blots, the antibody reacted only with fbp on sodium dodecyl sulfate electrophoretograms of Triton X-100 extracts of L. casei membranes. Anti-fbp showed no cross-reactivity with L. casei dihydrofolate reductase, L. casei 5,10-methenyltetrahydrofolate synthetase, L1210 dihydrofolate reductase, rat liver dihydrofolate reductase, or L1210 folate-binding protein. Enzyme-linked immunosorbent assay measurements indicated the presence of an fbp in membranes of Lactobacillus salivarius and two transport-defective sublines of L. casei. Anti-fbp was used to demonstrate selective extraction, with n-butanol, of fbp from a mixture of Triton-solubilized L. casei membrane proteins; repression of fbp in membranes of L. casei cells grown on high levels of folate; and localization of fbp by electron microscopy, using anti-fbp in conjunction with goat anti-rabbit IgG gold conjugate, in L. casei membranes.

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