Nitric Oxide Synthase Type II

Publication Title: 
Canadian Journal of Physiology and Pharmacology

Padma 28 is a mixture of herbs used in traditional Tibetan medicine with anti-inflammatory activities. We investigated the effects of Padma 28 on nitric oxide (NO) production by the inducible nitric oxide synthase (iNOS) in lipopolysaccharide stimulated mouse macrophages (RAW 264.7). Padma 28 (0-900 microg/mL) induced a concentration dependent inhibition of inducible nitric oxide synthesis. iNOS protein expression showed a concentration dependent reduction as revealed by immunoblotting when cells were incubated with increasing amounts of Padma 28.

Author(s): 
Moeslinger, T.
Friedl, R.
Volf, I.
Brunner, M.
Koller, E.
Spieckermann, P. G.
Publication Title: 
Advances in Experimental Medicine and Biology

During development and aging, vascular remodeling represents a critical adaptive response to modifications in oxygen supply to tissues. Hypoxia inducible factor (HIF) has a crucial role and is modulated by oxygen levels, with an age-dependent response in neonates, adult, and aged people. ROS are generated under hypoxic conditions and the accumulation of free radicals during life reduces the ability of tissues to their removal.

Author(s): 
Zara, S.
Pokorski, M.
Cataldi, A.
Porzionato, A.
De Caro, R.
Antosiewicz, J.
Di Giulio, C.
Publication Title: 
Biogerontology

Nitric oxide (NO) triggers multiple signal transduction pathways and contributes to the control of numerous cellular functions. Previous studies have shown in model organisms that the alteration of NO production has important effects on aging and lifespan. We studied in a large sample (763 subjects, age range 19-107†years) the variability of the three human genes (NOS1, -2, -3) coding for the three isoforms of the NADPH-dependent enzymes named NO synthases (NOS) which are responsible of NO synthesis.

Author(s): 
Montesanto, Alberto
Crocco, Paolina
Tallaro, Federica
Pisani, Francesca
Mazzei, Bruno
Mari, Vincenzo
Corsonello, Andrea
Lattanzio, Fabrizia
Passarino, Giuseppe
Rose, Giuseppina
Publication Title: 
Acta Anaesthesiologica Taiwanica: Official Journal of the Taiwan Society of Anesthesiologists

BACKGROUND: Sepsis is characterized by an increase in nitric oxide (NO) production, hemodynamic dysfunction and multiple organ failure. Propofol, a commonly used anesthetic in the intensive care unit for sedation and hypnosis, is thought to exert a protective effect on NO overproduction by inhibiting the expression of inducible NO synthase (iNOS) in sepsis.

Author(s): 
Liu, Yen-Chin
Chan, Julie Y. H.
Tsai, Yu-Chuan
Publication Title: 
FEBS letters

Artemisinin is a natural product used as an alternative drug in the treatment of severe and multidrug-resistant malaria. In the present work we show that artemisinin shares with other sesquiterpene lactones the ability to inhibit the activation of the nuclear factor NF-kB: by this mechanism, artemisinin, as well as parthenolide, inhibits nitric oxide synthesis in cytokine-stimulated human astrocytoma T67 cells. These results suggest that artemisinin, in addition to its antiparasitic properties, could also exert a therapeutic effect on neurological complications of malaria.

Author(s): 
Aldieri, Elisabetta
Atragene, Daniela
Bergandi, Loredana
Riganti, Chiara
Costamagna, Costanzo
Bosia, Amalia
Ghigo, Dario
Publication Title: 
Acta Pharmacologica Sinica

AIM: To elucidate the anti-inflammatory potentials and underlying mechanisms of SM905, a novel artemisinin derivative, in lipopolysaccharide (LPS)-stimulated murine macrophage RAW 264.7 cells. METHODS: Nitric oxide (NO) generation, cytokine production, and the protein expression levels of inducible nitric-oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were examined using a Griess assay, an enzyme-linked immunosorbent assay (ELISA) and a Western blotting assay, respectively. The mRNA expression was measured using real-time PCR.

Author(s): 
Wang, Jun-Xia
Hou, Li-Fei
Yang, Yang
Tang, Wei
Li, Ying
Zuo, Jian-ping
Publication Title: 
Carcinogenesis

Guggulsterone (GUG), a resin of the Commiphora mukul tree, has been used in ayurvedic medicine for centuries to treat a variety of ailments. Recent studies have suggested that GUG may also possess anticancer effects. In the present study, we show that GUG possesses antitumor-promoting effects in SENCAR mouse skin tumorigenesis model. We first determined the effect of topical application of GUG to mice against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced conventional markers and other novel markers of skin tumor promotion.

Author(s): 
Sarfaraz, Sami
Siddiqui, Imtiaz A.
Syed, Deeba N.
Afaq, Farrukh
Mukhtar, Hasan
Publication Title: 
Carcinogenesis

Guggulsterone (GUG), a resin of the Commiphora mukul tree, has been used in ayurvedic medicine for centuries to treat a variety of ailments. Recent studies have suggested that GUG may also possess anticancer effects. In the present study, we show that GUG possesses antitumor-promoting effects in SENCAR mouse skin tumorigenesis model. We first determined the effect of topical application of GUG to mice against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced conventional markers and other novel markers of skin tumor promotion.

Author(s): 
Sarfaraz, Sami
Siddiqui, Imtiaz A.
Syed, Deeba N.
Afaq, Farrukh
Mukhtar, Hasan
Publication Title: 
Journal of Ethnopharmacology

AIM OF THIS STUDY: Cardiospermum halicacabum L. is well known for its anti-inflammatory, analgesic and antipyretic activities. It has been used in Ayurveda and folk medicine for the treatment of rheumatism, fever and earache. But its mechanism of anti-inflammatory and analgesic action is still unclear, hence in this context, the objective of our study is to reveal the mechanism of anti-inflammatory and analgesic activity of Cardiospermum halicacabum L. which would form an additional proof to the traditional knowledge of Cardiospermum halicacabum L.

Author(s): 
Sheeba, M. S.
Asha, V. V.
Publication Title: 
Inflammopharmacology

The leaves of Cinnamomum tamala Linn (Lauraceae), component of Indian spices are associated with hypoglycemic property in Ayurveda; however, no report is available towards its immunomodulation property, which has been explored here. The dried powder of CT leaves was extracted with hexane and solvent free extract (CTH) was given orally to rats for 10 days, in various doses. Its effect was studied on peritoneal macrophage functions, and was compared with ascorbic acid (1,000 mg/kg, immune-stimulant) and cyclophosphamide (10 mg/kg, immune-suppressant).

Author(s): 
Chaurasia, J. K.
Pandey, Nidhi
Tripathi, Yamini Bhushan

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