Glutathione synthesis is compromised in erythrocytes from individuals with HIV

نویسندگان

  • Devin Morris
  • Judy Ly
  • Po-Ting Chi
  • John Daliva
  • Truongson Nguyen
  • Charleen Soofer
  • Yung C. Chen
  • Minette Lagman
  • Vishwanath Venketaraman
چکیده

We demonstrated that the levels of enzymes responsible for the synthesis of glutathione (GSH) such as glutathione synthase (GSS), glutamate-cysteine ligase-catalytic subunit (GCLC), and glutathione reductase (GSR) were significantly reduced in the red blood cells (RBCs) isolated from individuals with human immunodeficiency virus (HIV) infection and this reduction correlated with decreased levels of intracellular GSH. GSH content in RBCs can be used as a marker for increased overall oxidative stress and immune dysfunctions caused by HIV infection. Our data supports our hypothesis that compromised levels of GSH in HIV infected individuals' is due to decreased levels of GSH-synthetic enzymes. The role of GSH in combating oxidative stress and improving the functions of immune cells in HIV patients' indicates the benefit of an antioxidant supplement which can reduce the cellular damage and promote the functions of immune cells.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analysis of glutathione levels in the brain tissue samples from HIV-1-positive individuals and subject with Alzheimer's disease and its implication in the pathophysiology of the disease process

HIV-1 positive individuals are at high risk for susceptibility to both pulmonary tuberculosis (TB) and extra-pulmonary TB, including TB meningitis (TBM) which is an extreme form of TB. The goals of this study are to determine the mechanisms responsible for compromised levels of glutathione (GSH) in the brain tissue samples derived from HIV-1-infected individuals and individuals with Alzheimer's...

متن کامل

تاثیر ورزش مستمر بر کاهش آسیب‌پذیری غشاء سلولی، وضعیت دفاع آنتی‌اکسیداتیو و استرس اکسیداتیو

    Background & Aim: The biological effects of potent oxidative agents in human body are under anti-oxidative control. Functional defects of organs may result from reactions of free radicals with the cell membrane. It is known that major targets of oxygen radicals are cell membrane lipids. Some reports indicate the role of peroxides in development of atherosclerosis. Human body tissues(eg.eryt...

متن کامل

Unveiling the Mechanisms for Decreased Glutathione in Individuals with HIV Infection

We examined the causes for decreased glutathione (GSH) in individuals with HIV infection. We observed lower levels of intracellular GSH in macrophages from individuals with HIV compared to healthy subjects. Further, the GSH composition found in macrophages from HIV(+) subjects heavily favors oxidized glutathione (GSSG) which lacks antioxidant activity, over free GSH which is responsible for GSH...

متن کامل

بررسی پاسخ سیستم دفاعی آنتی‌اکسیدان طحال و اریتروسیت‌ها به اثرات-N استیل سیستئین در کاهش سمیت پاراکسون در موش صحرایی

    Background & Aims : Paraoxon (POX) as an organophosphate pesticide is the active form of parathion that is widely used in agriculture. Antioxidants can protect cells from oxidative stress. The aim of this study was to investigate the effect of NAC as a n antioxidant against POX- induced oxidative stress in rat spleen and erythrocytes.   Material & Methods : In the present experimental study...

متن کامل

Erythrocyte glutathione deficiency in symptom-free HIV infection is associated with decreased synthesis rate.

Although several studies have documented intra- and extracellular glutathione (GSH) deficiency in asymptomatic human immunodeficiency virus (HIV) infection, the mechanisms responsible for the altered GSH homeostasis remain unknown. To determine whether decreased synthesis contributes to this alteration of GSH homeostasis, a primed-constant infusion of [2H2]glycine was used to measure the fracti...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 5  شماره 

صفحات  -

تاریخ انتشار 2014