نتایج جستجو برای: cyp

تعداد نتایج: 3738  

2017
Dai Cheng Zhaodong Wan Xinyu Zhang Jian Li He Li Chunling Wang

Based on the well-known toxicity of cyclophosphamide (CYP) on the immune system, this research investigated the modulating effects of the long-term dietary Chlorella vulgaris (CV) supplementation on the immunosuppression induced by CYP in mice, in order to provide a novel dietary design to mitigate the side effects of CYP therapy. Control, CYP-treated, CYP + CV (6%), CYP + CV (12%) and CYP + CV...

2001
Ingrid Fleming

Since the initial reports that renal cytochrome P450 (CYP) enzymes can metabolize arachidonic acid to substances which affect arterial tone, it has become increasingly clear that CYP enzymes expressed within the cardiovascular system play a crucial role in the modulation of vascular homeostasis. There is strong evidence suggesting that the activation of a CYP epoxygenase in endothelial cells is...

ژورنال: :دانشور پزشکی 0
ابوالفضل دادخواه تهرانی بیوشیمی، گروه پزشکی، دانشکده پزشکی، دانشگاه آزاد اسلامی، واحد قم، قم، ایران محمد رضا محمدی ملایری گروه پاتوبیولوژی، دانشکده دامپزشکی، دانشگاه آزاد اسلامی، واحد گرمسار، گرمسار، ایران فائزه فاطمی استادیار بیوشیمی، پژوهشکده چرخه سوخت، پژوهشگاه علوم و فنون هسته ای، تهران، ایران علیرضا جهانبانی دانشکده دامپزشکی، دانشگاه آزاد اسلامی، واحد گرمسار، گرمسار، ایران فاطمه ترابی فیزیولوژی، دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد قم، قم، ایران محمد حسین جمالی دانشکده دامپزشکی، دانشگاه آزاد اسلامی، واحد گرمسار، گرمسار، ایران

مقدمه و هدف: دی متیل هیدرازین (dmh) در کبد، توسط سیتوکروم p450 (cyp 450) به متیل دیازونیوم متابولیزه شده که با ایجاد جهش در ژن بتاکاتنین و عدم تخریب آن توسط سیستم یوبی کوئیتین به افزایش سطح آن و درنتیجه، افزایش بیان برخی از آنکوژن ها و ایجاد تومور در کولون منجرمی شود. مواد و روش ها: تعداد 48 سر رت به شش گروه تقسیم شدند. سرطان کولون از طریق تزریق dmh (20 mg/kg b.w)، هفته ای یک بار به مدت هجده هف...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2007
Kimberly A Corrow Margaret A Vizzard

Phosphorylated ERK expression has been demonstrated in the central and peripheral nervous system after various stimuli, including visceral stimulation. Changes in the activation (i.e., phosphorylation) of extracellular signal-regulated kinases (pERK) were examined in the urinary bladder after 4 h (acute), 48 h (intermediate), or chronic (10 day) cyclophosphamide (CYP) treatment. CYP-induced cys...

Journal: :Contraception 2016
Ndola Prata Janelle Downing Suzanne Bell Karen Weidert Hagos Godefay Amanuel Gessessew

OBJECTIVE To provide a cost analysis of an injectable contraceptive program combining community-based distribution and social marketing in Tigray, Ethiopia. METHODS We conducted a cost analysis, modeling the costs and programmatic outcomes of the program's initial implementation in 3 districts of Tigray, Ethiopia. Costs were estimated from a review of program expense records, invoices, and in...

Journal: :Drug metabolism and disposition: the biological fate of chemicals 1998
J M Silva P E Morin S H Day B P Kennedy P Payette T Rushmore J A Yergey D A Nicoll-Griffith

Induction of cytochromes P450 (P450s) by drugs can lead to drug-drug interactions. Primary hepatocytes have been reported to retain inducible P450s. To optimize the use of primary hepatocytes for predicting induction of P450 (CYP 3A and 2B) expression in vivo, both culture conditions and expression of induction potentials were investigated. In rat hepatocytes, basal CYP 3A1/2 expression was bet...

Journal: :Archives of biochemistry and biophysics 2003
Alex Baldwin Zeqi Huang Youssef Jounaidi David J Waxman

Gene-directed enzyme prodrug therapy can be used to increase the therapeutic activity of anti-cancer prodrugs that undergo liver cytochrome P450 (CYP)-catalyzed prodrug to active drug conversion. The present report describes a cell-culture-based assay to identify CYP gene-CYP prodrug combinations that generate bystander cytotoxic metabolites and that may potentially be useful for CYP-based gene...

Journal: :Comparative Biochemistry and Physiology C-toxicology & Pharmacology 2021

Neonicotinoid insecticides are used for agricultural and non-agricultural purposes worldwide. Pets directly exposed to neonicotinoids in veterinary products through environmental contamination. Cytochrome P450 (CYP) is among the most significant xenobiotic metabolizing enzymes that oxidizes several chemicals, including neonicotinoids. However, CYP activities metabolite compositions of neonicoti...

Journal: :Bulletin of the National Research Centre 2022

Abstract Background Cyclophosphamide (CYP) is an anticancer agent widely used in chemotherapy. It has been suggested that CYP causes toxicity many organs, including the lungs and testes. Many studies have indicated some antioxidants possible protective effects against CYP’s side effects. β-cryptoxanthin (BCX), a major carotenoid of potential interest for health, known its antioxidant activities...

Journal: :International journal of qualitative methods 2022

The importance of engaging and involving children young people (CYP) in research is widely recognised, especially for educational exploring CYP’s perceptions experiences school processes. Historically, working with CYP to collect qualitative data has involved face-to-face interactions, however the social distancing requirement during COVID-19 pandemic meant there was a need move ‘online’ work ‘...

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