Inhibition of nitric oxide synthase exacerbates group B streptococcus sepsis and arthritis in mice.
نویسندگان
چکیده
The role of nitric oxide in group B Streptococcus (GBS) infection was evaluated by inhibiting its production with aminoguanidine (AG). AG-treated mice displayed higher mortality rates and more frequent and severe arthritis than controls. Worsening of arthritis correlated with a higher number of GBS cells in the joints and local interleukin-1 beta production.
منابع مشابه
Inhibition of nitric oxide synthase activity improves focal cerebral damage induced by cerebral ischemia/reperfusion in normotensive rats
Introduction: Nitric oxide seems to play a dual role in ischemia/reperfusion injury. Few studies have investigated whether it exacerbates or improves brain edema. In the present study, we inhibited the activity of nitric oxide synthase by L-NAME and evaluated the cerebral infarct volume, tissue swelling and brain edema, alongside the measurement of blood flow of the ischemic region. Methods...
متن کاملThe Effect of Dexamethasone on Expression of Inducible Nitric Oxide Synthase Gene During Liver Warm Ischemia-reperfusion in Rat
Background: Liver ischemia / reperfusion Injury (IRI) is one of the major causes of liver failure during various types of liver surgery, trauma and infections. The present study investigates the effect of dexsamethasone on the liver injury and inducible nitric oxide synthase gene expression during hepatic warm ischemia/reperfusion in rats. Materials and Methods: 24 male Wistar rats (200-250 g)...
متن کاملSeptic arthritis following Staphylococcus aureus infection in mice lacking inducible nitric oxide synthase.
Nitric oxide (NO), produced in large amounts by inducible NO synthase (iNOS), has emerged recently as an important microbicidal and immunomodulatory mediator. We have investigated its role in bacterial septic arthritis caused by Staphylococcus aureus infection using iNOS-deficient mice. The incidence, rate of development, and severity of arthritis were greater in iNOS-deficient than in heterozy...
متن کاملL-Glutamin-Induced Inhibition of Endotoxemia by Reducing Pre-Inflammatory Cytokines, Nitric Oxide, and CD40 Expression
Introduction: Researchers have been investigating the major pathogens involved in septic shock caused by lipopolysaccharide in recent years. Moreover, they have been concerned about the use of appropriate drugs to intervene with the main pathogenesis of the disease. This study aimed to investigate the effect of L-Glutamine as an HSP70 inducer in reducing pre-inflammatory cytokines and effective...
متن کاملRole of matrix metalloproteinase II on analgesic effect of nitric oxide inhibition in rat
Abstract Introduction: Matrix metalloproteinase 2 is one of the inflammatory mediators that is involved in nociceptive processing and its production is regulated by many inflammatory factors such as nitric oxide. We studied the role of MMP-2 on the analgesic effects of nNOS inhibitor. Methods: Considering that nitric oxide has many roles in pain processing, we studied the CSF levels of MMP-2 ...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Infection and immunity
دوره 72 8 شماره
صفحات -
تاریخ انتشار 2004