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The reactive nitrogen species, nitric oxide (NO), plays an important role in the pathogenesis of neurodegenerative diseases. The suppression of NO production may be fundamental for survival of neurons. Here, we report that pretreatment of human ramified microglial cells with nearly physiological levels of exogenous NO prevents lipopolysaccharide (LPS)/tumor(More)
The effect of temperature (between 5.0 and 45.0 degrees C) on the catalytic activity of nitric oxide synthases types I, II, and III (NOS-I, NOS-II, and NOS-III, respectively) has been investigated, at pH 7.5. The value of V(max) for NOS-I activity increases from 1.8 x 10(1) pmol min(-1) mg(-1), at 5.0 degrees C, to 1.8 x 10(2) pmol min(-1) mg(-1), at 45.0(More)
We present here a brief description of the relationships among metals, nitric oxide metabolism, and ageing. In particular, we will discuss the interactions occurring between redox (copper, iron) and non-redox (zinc) metals and nitric oxide, the metal- and nitric oxide-catalyzed formation of thiol adducts (nitrosothiols, mixed disulphides) and the possible(More)
1. The role of the L-arginine-nitric oxide (NO) pathway on the formation of prostaglandin E2 (PGE2) by human cultured astroglial cells incubated with interleukin-1beta (IL-1beta) and tumour necrosis factor-alpha (TNF-alpha) was investigated. 2. Incubation of T 67 astroglial cell line with IL-beta (10 ng ml(-1)) and TNF-alpha (500 u ml(-1)) produced a(More)
Minimally invasive liver surgery is performed with increasing frequency by hepatic surgeons. Laparoscopy was the first approach to be used and it is currently safely feasible in selected patients by experienced surgeons. Minor and major laparoscopic hepatectomies are now performed as a routine procedure in tertiary referral centers, with increasing evidence(More)
In the body, nitric oxide (NO) is an important physiological regulator of functions such as vasodilatation and neurotransmission. Under pathological conditions, high concentrations of NO can be either beneficial(e.g. anti-bacterial, anti-parasitic and anti-viral) or detrimental; NO can therefore be considered a double-edged sword. When manipulating NO(More)
Here, we show that extracorporeal shock waves (ESW), at a low energy density value, quickly increase neuronal nitric oxide synthase (nNOS) activity and basal nitric oxide (NO) production in the rat glioma cell line C6. In addition, the treatment of C6 cells with ESW reverts the decrease of nNOS activity and NO production induced by a mixture of(More)
Nitric oxide (NO) regulates key aspects of cell metabolism through reversible inhibition of cytochrome c oxidase (CcOX), the terminal electron acceptor (complex IV) of the mitochondrial respiratory chain, in competition with oxygen. Recently, a constitutive mitochondrial NOS corresponding to a neuronal NOS-I isoform (mtNOS-I) has been identified in several(More)
Nitric oxide (NO) has been reported to regulate NF-kappaB, one of the best-characterized transcription factors playing important roles in many cellular responses to a large variety of stimuli. NO has been suggested to induce or inhibit the activation of NF-kappaB, its effect depending, among others, on the cell type considered. In this review, the(More)