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Pycnogenol AND eNOS

M Koláček, J Muchová, S Vranková, L Jendeková, O Pecháňová, O Uličná, C Watala, Z Duračková
The work is focused on clarifying the impact of diabetes and natural plant polyphenols contained in Pycnogenol® (PYC) on the activity and synthesis of Cu/Zn-SOD and synthesis of nNOS and eNOS in the cerebellum and cerebral cortex in rats with induced diabetes. Rats included in the study (n=38) were divided into three groups: the controls (C), (n=7), untreated diabetics (D) (n=19) and diabetic rats treated with PYC (DP) (n=12). Diabetes significantly decreased synthesis, as well as the activity of Cu/Zn-SOD in both studied parts of the brain...
2010: Prague Medical Report
Jan Klimas, Jana Kmecova, Stanislava Jankyova, Diana Yaghi, Elena Priesolova, Zuzana Kyselova, Peter Musil, Peter Ochodnicky, Peter Krenek, Jan Kyselovic, Stefan Matyas
We studied whether Pycnogenol (PYC) may attenuate the development of experimental streptozotocin-induced diabetic cardiomyopathy in rat. In addition, we aimed to study whether PYC affects cardiac oxidative stress and the protein expression of reactive oxygen species (ROS)-producing molecules (gp91(phox)-containing NADPH oxidase and NO-signalling proteins). Experimental diabetes mellitus was manifested by hyperglycaemia and impaired cardiac function estimated using left ventricular catheterisation in vivo. PYC lowered fasting plasma glucose and normalized basal cardiac function...
July 2010: Phytotherapy Research: PTR
V Nikolova, R Stanislavov, I Vatev, B Nalbanski, M Pŭnevska
UNLABELLED: The diagnosis of male infertility is determinate after assessment of sperm quality and clinical study. In nearly 30% of the cases nevertheless detailed clinical and laboratory study it can't be discovered the cause and on the bases of exclusion criteria set the diagnosis idiopathic infertility. The object of our study was investigation of the group patients (n=50) with idiopathic infertility treated with Prelox and to be studied its effects on spermatozoa parameters. MATERIAL AND METHODS: The study design was double-blind, placebo-controlled, cross-over, randomized study, including introduction period (1 month), two therapeutic periods (each one of 1 month) separated with 1 month wash out period and concluding period of 1 month...
2007: Akusherstvo i Ginekologii︠a︡
Monika Dvoráková, Monika Sivonová, Jana Trebatická, Igor Skodácek, Iveta Waczuliková, Jana Muchová, Zdenka Duracková
UNLABELLED: Attention deficit hyperactivity disorder (ADHD) belongs to the neurodevelopmental disorders characterized by impulsivity, distractibility and hyperactivity. In the pathogenesis of ADHD genetic and non-genetic factors play an important role. It is assumed that one of non-genetic factors should be oxidative stress. Pycnogenol, an extract from the pine bark, consists of bioflavonoids, catechins, procyanidins and phenolic acids. Pycnogenol acts as powerful antioxidant, chelating agent; it stimulates the activities of some enzymes, like SOD, eNOS, and exhibits other biological activities...
2006: Redox Report: Communications in Free Radical Research
D F Fitzpatrick, B Bing, P Rohdewald
Pycnogenol (P) is purported to exhibit effects that could be beneficial in terms of prevention of chronic age-related diseases such as atherosclerosis. The most studied of these effects is its antioxidant/free radical-scavenging activity. In this study, we investigated the possibility that this supplement might produce vascular effects by stimulation of nitric oxide (NO) production by vascular endothelial cells. In the in vitro experiments, P (1-10 microg/ml) relaxed epinephrine (E)-, norepinephrine (NE)-, and phenylephrine (PE)-contracted intact rat aortic ring preparations in a concentration-dependent manner...
October 1998: Journal of Cardiovascular Pharmacology
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