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nitric oxide synthase

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https://www.readbyqxmd.com/read/29036889/single-administration-of-melatonin-modulates-the-nitroxidergic-system-at-the-peripheral-level-and-reduces-thermal-nociceptive-hypersensitivity-in-neuropathic-rats
#1
Elisa Borsani, Barbara Buffoli, Veronica Bonazza, Russel J Reiter, Rita Rezzani, Luigi F Rodella
Neuropathic pain is a severe condition with unsatisfactory treatments. Melatonin, an indolamine, seems to be a promising molecule suitable for this purpose due to its well-known anti-inflammatory, analgesic, and antioxidant effects, as well as its modulation of the nitroxidergic system. Nevertheless, the data on its mechanism of action and potentialities are currently insufficient in this pathology, especially at the peripheral level. Thus, this work evaluated the effect of a single administration of melatonin in an established mononeuropathy pain model that monitors the behaviour and the changes in the nitroxidergic system in dorsal root ganglia and skin, which are affected by nervous impairment...
October 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29036837/simvastatin-as-a-potential-disease-modifying-therapy-for-patients-with-parkinson-s-disease-rationale-for%C3%A2-clinical-trial-and-current-progress
#2
Camille B Carroll, Richard K H Wyse
Many now believe the holy grail for the next stage of therapeutic advance surrounds the development of disease-modifying approaches aimed at intercepting the year-on-year neurodegenerative decline experienced by most patients with Parkinson's disease (PD). Based on recommendations of an international committee of experts who are currently bringing multiple, potentially disease-modifying, PD therapeutics into long-term neuroprotective PD trials, a clinical trial involving 198 patients is underway to determine whether Simvastatin provides protection against chronic neurodegeneration...
October 13, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/29036612/cd40l-controls-obesity-associated-vascular-inflammation-oxidative-stress-and-endothelial-dysfunction-in-mice-translational-aspects-for-man
#3
Sebastian Steven, Mobin Dib, Michael Hausding, Fatemeh Kashani, Matthias Oelze, Swenja Kröller-Schön, Alina Hanf, Steffen Daub, Siyer Roohani, Yves Gramlich, Esther Lutgens, Eberhard Schulz, Christian Becker, Karl J Lackner, Hartmut Kleinert, Christoph Knosalla, Beate Niesler, Philipp S Wild, Thomas Münzel, Andreas Daiber
Aims: CD40 ligand (CD40L) signaling controls vascular oxidative stress and related dysfunction in angiotensin-II-induced arterial hypertension by regulating vascular immune cell recruitment and platelet activation. Here we investigated the role of CD40L in experimental hyperlipidemia. Methods and Results: Male wild type and CD40L-/- mice (C57BL/6 background) were subjected to high fat diet for sixteen weeks. Weight, cholesterol, HDL and LDL levels, endothelial function (isometric tension recording), oxidative stress (NADPH oxidase expression, dihydroethidium fluorescence) and inflammatory parameters (inducible nitric oxide synthase, interleukin-6 expression) were assessed...
September 26, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29035888/nitric-oxide-mediates-insect-cellular-immunity-via-phospholipase-a2-activation
#4
Md Sadekuzzaman, David Stanley, Yonggyun Kim
After infection or invasion is recognized, biochemical mediators act in signaling insect immune functions. These include biogenic amines, insect cytokines, eicosanoids, and nitric oxide (NO). Treating insects or isolated hemocyte populations with different mediators often leads to similar results. Separate treatments with an insect cytokine, 2 biogenic amines, and an eicosanoid lead to a single result, hemocyte spreading, understood in terms of intracellular cross-talk among these signaling systems. This study focuses on the cross-talk between NO and eicosanoid signaling in our model insect, Spodoptera exigua...
October 17, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29035821/neuronal-nitric-oxide-synthase-is-involved-in-cb-trpv1-signalling-focus-on-control-of-hippocampal-hyperexcitability
#5
Fabio Carletti, Giuditta Gambino, Valerio Rizzo, Giuseppe Ferraro, Pierangelo Sardo
Cannabinoids (CB), transient receptors potential vanilloid type 1 (TRPV1) and nitric oxide (NO) were found to be interlinked in regulating some neuronal functions such as membrane excitability and synaptic transmission. TRPV1 play a fundamental role since it represents a synaptic target for CB that triggers several downstream cellular pathways. In this regard, recent evidence report that TRPV1 could influence NO production by modulating neuronal NO synthase (nNOS) activity. In the present research, we pointed to manipulate nNOS function to assess its role on TRPV1 signalling in hyperexcitability conditions elicited in the dentate gyrus of hippocampal formation...
October 3, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29035815/genipin-inhibits-allergic-responses-in-ovalbumin-induced-asthmatic-mice
#6
Je-Won Ko, Na-Rae Shin, Sung-Hyeuk Park, Young-Kwon Cho, Jong-Choon Kim, Chang-Seob Seo, In-Sik Shin
Genipin is a natural compound isolated from the fruit of Gardenia jasminoides with various pharmacological effects. In this study, we investigated whether genipin effectively alleviates allergic responses in a murine model of ovalbumin (OVA)-induced asthma. The mice were administered an intraperitoneal injection of OVA on day 0 and 14 to boost the immune response; genipin was then administered from day 18 to 23 by oral gavage. On days 21 to 23, mice were OVA-challenged using am ultrasonic nebulizer, and airway hyperresponsiveness (AHR) was determined on day 24 by plethysmography...
October 13, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29035447/porphyromonas-gingivalis-infection-accelerates-atherosclerosis-mediated-by-oxidative-stress-and-inflammatory-responses-in-apoe-mice
#7
Yan Xuan, Qiao Shi, Guo-Jing Liu, Qing-Xian Luan, Yu Cai
BACKGROUND: The periodontal pathogen Porphyromonas gingivalis (P. gingivalis) has been proven to accelerate the development of atherosclerosis in apolipoprotein E (ApoE)-deficient mice. In this study, we used an ApoE knockout (ApoE-/-) mouse model with chronic intravenous infection with P. gingivalis to investigate the possible mechanisms of P. gingivalis-induced atherosclerosis. METHODS: Eight-week-old ApoE-/- mice were randomly assigned to two groups: (a) ApoE-/- + PBS (n = 8); (b) ApoE-/- + P...
October 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29034589/involvement-of-local-renin-angiotensin-system-in-immunosuppression-of-tumor-microenvironment
#8
Kenta Nakamura, Tomonori Yaguchi, Gaku Ohmura, Asuka Kobayashi, Naoshi Kawamura, Takashi Iwata, Yukiko Kiniwa, Ryuhei Okuyama, Yutaka Kawakami
To improve the current cancer immunotherapies, strategies to modulate various immunosuppressive cells including myeloid derived suppressor cells (MDSCs) which were shown to be negative factors in the immune-checkpoint blockade therapy, need to be developed. In this study, we have evaluated the role of local renin-angiotensin system (RAS) in the tumor immune-microenvironment using murine models bearing tumor cell lines in which RAS was not involved in their proliferation and angiogenetic ability. Administration of angiotensin II receptor blockers (ARBs) to C57BL/6 mice bearing murine colon cancer cell line MC38 resulted in significant enhancement of tumor antigen gp70 specific T cells...
October 16, 2017: Cancer Science
https://www.readbyqxmd.com/read/29034014/improving-the-outcome-of-vein-grafts-should-vascular-surgeons-turn-veins-into-arteries
#9
REVIEW
Toshihiko Isaji, Takuya Hashimoto, Kota Yamamoto, Jeans M Santana, Bogdan Yatsula, Haidi Hu, Hualong Bai, Guo Jianming, Tambudzai Kudze, Toshiya Nishibe, Alan Dardik
Autogenous vein grafts remain the gold standard conduit for arterial bypass, particularly for the treatment of critical limb ischemia. Vein graft adaptation to the arterial environment, i.e., adequate dilation and wall thickening, contributes to the superior performance of vein grafts. However, abnormal venous wall remodeling with excessive neointimal hyperplasia commonly causes vein graft failure. Since the PREVENT trials failed to improve vein graft outcomes, new strategies focus on the adaptive response of the venous endothelial cells to the post-surgical arterial environment...
March 24, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29033935/cannabinoid-receptor-1-participates-in-liver-inflammation-by-promoting-m1-macrophage-polarization-via-rhoa-nf-%C3%AE%C2%BAb-p65-and-erk1-2-pathways-respectively-in-mouse-liver-fibrogenesis
#10
Lei Tian, Weiyang Li, Le Yang, Na Chang, Xiaoting Fan, Xiaofang Ji, Jieshi Xie, Lin Yang, Liying Li
Macrophage M1/M2 polarization mediates tissue damage and inflammatory responses. Cannabinoid receptor (CB) 1 participated in liver fibrogenesis by affecting bone marrow (BM)-derived monocytes/macrophages (BMMs) activation. However, the knowledge of whether CB1 is involved in the polarization of BMMs remains limited. Here, we found M1 gene signatures (including CD86, MIP-1β, tumor necrosis factor, IL-6, and inducible nitric oxide synthase) and the amount of M1 macrophages (CD86(+) cells, gated by F4/80) were significantly elevated in carbon tetrachloride (CCl4)-induced mouse injured livers, while that of M2 type macrophages had little change by RT-qPCR and fluorescence-activated cell sorting (FACS)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29033839/schisandra-chinensis-stem-ameliorates-3-nitropropionic-acid-induced-striatal-toxicity-via-activation-of-the-nrf2-pathway-and-inhibition-of-the-mapks-and-nf-%C3%AE%C2%BAb-pathways
#11
Eun-Jeong Kim, Minhee Jang, Min Jung Lee, Jong Hee Choi, Sung Joong Lee, Sun Kwang Kim, Dae Sik Jang, Ik-Hyun Cho
The beneficial value of the stems of Schisandra chinensis (SSC) in neurological diseases is unclear. We examined whether SSC aqueous extract (SSCE) alleviates striatal toxicity in a 3-nitropropionic acid (3-NPA)-induced mouse model of Huntington's disease (HD). SSCE (75, 150, or 300 mg/kg/day, p.o.) was given daily before or after 3-NPA treatment. Pre- and onset-treatment with SSCE displayed a significant protective effect and pretreatment was more effective as assessed by neurological scores and survival rate...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29033513/the-endothelial-nitric-oxide-synthase-nos3-786t-c-genetic-polymorphism-in-chronic-heart-failure-effects-of-mutant-786c-allele-on-long-term-mortality
#12
Sait Terzi, Ayşe Emre, Kemal Yesilcimen, Selçuk Yazıcı, Aysun Erdem, Ufuk Sadik Ceylan, Figen Ciloglu
BACKGROUND: Nitric oxide plays an important role in the regulation of basal vascular tone and cardiac myocyte function. We investigated the NOS3-786T>C polymorphism in chronic heart failure (CHF) and its effects on long-term mortality. METHODS: Ninety-one patients with CHF who were referred to the Department of Cardiology of Siyami Ersek Cardiovascular and Thoracic Surgery Center for cardiopulmonary exercise testing between April 2001 and January 2004 and 30 controls were enrolled in this study...
July 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/29032686/3-hydroxypterostilbene-suppresses-colitis-associated-tumorigenesis-by-inhibition-of-il-6-stat3-signaling-in-mice
#13
Ching-Shu Lai, Guliangyang Yang, Shiming Li, Pei-Sheng Lee, Bini Wang, Min-Ching Chung, Kalyanam Nagabhushanam, Min-Hsiung Pan, Chi-Tang Ho
3'-Hydroxypterostilbene (trans-3,5-dimethoxy-3',4'-hydroxystilbene) presents in Sphaerophysa salsula, Pterocarpus marsupium, and Honey Bee propolis and has been reported to exhibit several biological activities. Herein, we aimed to explore the chemopreventive effects of dietary 3'-hydroxypterostilbene and underlying molecular mechanisms on colitis-associated cancer using the azoxymethane (AOM)/dextran sodium sulfate (DSS) model. 3'-Hydroxypterostilbene administration effectively ameliorated the colon shortening and number of tumors in AOM/DSS-treated mice (3...
October 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29032115/toll-like-receptor-4-tlr4-impairs-nitric-oxide-contributing-to-angiotensin-ii-induced-cavernosal-dysfunction
#14
Kenia P Nunes, Gisele F Bomfim, Haroldo A Toque, Theodora Szasz, R Clinton Webb
AIM: Angiotensin II (AngII), a corpus cavernosum (CC) constrictor peptide, modulates Toll like receptor (TLR) expression, a key element of the innate immune system, contributing to impaired vascular function in pathological conditions. However, it is unknown whether TLR4 is involved in AngII-induced erectile dysfunction. In this study, we investigated whether TLR4 plays a role in cavernosal dysfunction caused by AngII upregulation. MATERIAL AND METHODS: Cavernosal smooth muscle cells (CSMC) from C57/BL6 mice were treated with AngII (0...
October 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/29031735/the-temporal-expression-profile-of-a-nos3-related-natural-antisense-rna-in-the-brain-suggests-a-possible-role-in-neurogenesis
#15
Gabriela G Chavez, Gabriella Taylor, Jekaterina Garaliene, Guy P Richardson, Sergei A Korneev
Experimental work over the past several years has revealed an unexpected abundance of long natural antisense transcripts (NATs) in eukaryotic species. In light of the proposed role of such RNA molecules in the regulation of gene expression in the brain, attention is now focused on specific examples of neuronal NATs. Of particular interest are NATs that are complementary to mRNAs encoding nitric oxide synthase (NOS), the enzyme responsible for production of the important gaseous neurotransmitter nitric oxide (NO)...
October 12, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29031734/residual-no-modulates-contractile-responses-and-membrane-potential-in-isolated-rat-mesenteric-arteries
#16
Olcay Ergürhan Kıroğlu, Özlem Yorulmaz Özü, Mustafa Emre, İhsan Bayel, Eda Karabal Kumcu, M Ata Seçilmiş
Shear stress or vasocontriction causes endothelial nitric oxide (NO) release results in the regulation of vascular smooth muscle tone in small resistance arteries. Generation of NO is inhibited by nitric oxide synthase (NOS) inhibitors. In this study, we investigated the effect of residual NO, released even in the presence of NOS inhibitors, on the membrane depolarization and phenylephrine-induced contractions of smooth muscle. For this purpose, we used hydroxocobalamin (HC), an NO scavenger, in the presence of NOS inhibitiors, Nω-nitro- L-arginine (L-NA) or Nω-nitro-L-arginine methyl ester (L-NAME) in mesenteric arteries isolated from rats...
October 12, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29030883/polyunsaturated-fatty-acids-influence-inflammatory-markers-in-a-cellular-model-for-canine-osteoarthritis
#17
N Adler, A Schoeniger, H Fuhrmann
Although it is well recognized that dietary supplementation with fish oil improves clinical symptoms in dogs suffering from osteoarthritis, the molecular basis for the dietary benefit is not yet completely resolved in dogs. This study was designed to further clarify how polyunsaturated fatty acids (PUFA) affect key factors of cartilage degeneration in a canine cell culture system mimicking osteoarthritis. Canine chondrocytes were incubated either without or with 10 μm of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), arachidonic acid (AA) or 3...
October 13, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29030177/eprosartan-mesylate-loaded-bilosomes-as-potential-nano-carriers-against-diabetic-nephropathy-in-streptozotocin-induced-diabetic-rats
#18
Abdul Ahad, Mohammad Raish, Ajaz Ahmad, Fahad I Al-Jenoobi, Abdullah M Al-Mohizea
The objective of the present study was to formulate eprosartan mesylate loaded nano-bilosomes and investigates its potential for controlling streptozotocin induced diabetes nephropathy in Wistar rats. The eprosartan mesylate loaded nano-bilosomes comprising of various ratios of soybean phosphatidylcholine/sodium deoxycholate were prepared by thin film hydration technique. The prepared formulations were evaluated for vesicles size, polydispersity index, zeta potential and entrapment efficiency. Further the optimized formulation was characterized for vesicles morphology, and its efficacy for the management of diabetic nephropathy in Wistar rats...
October 10, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29030124/targeting-nitric-oxide-and-nmda-receptor-associated-pathways-in-treatment-of-high-grade-glial-tumors-hypotheses-for-nitro-memantine-and-nitrones
#19
REVIEW
Meric A Altinoz, İlhan Elmaci
Glioblastoma multiforme (GBM) is a devastating brain cancer with no curative treatment. Targeting Nitric Oxide (NO) and glutamatergic pathways may help as adjunctive treatments in GBM. NO at low doses promotes tumorigenesis, while at higher levels (above 300 nM) triggers apoptosis. Gliomas actively secrete high amounts of glutamate which activates EGR signaling and mediates degradation of peritumoral tissues via excitotoxic injury. Memantine inhibits NMDA-subtype of glutamate receptors (NMDARs) and induces autophagic death of glioma cells in vitro and blocks glioma growth in vivo...
October 10, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29030010/lps-priming-in-early-life-decreases-antigen-uptake-of-dendritic-cells-via-no-production
#20
Natsumi Mizuno, Yusuke Sasaki, Ryosuke Segawa, Sanki Asakawa, Masahiro Hiratsuka, Noriyasu Hirasawa
Immunological mechanisms of hygiene hypothesis are expected to develop a novel strategy for allergy prevention. Although a large number of studies has investigated the relation between allergies and infection, little is known about the influence of the exposure to infections on antigen uptake by dendritic cells (DCs). In this study, we examined the effect of lipopolysaccharide (LPS) priming in early life on the antigen uptake ability of DCs by using an original mouse model. LPS priming in juvenile mice decreased the migration of antigen-capturing CD11c(+) cells in the lymph nodes, but not in aged mice...
October 9, 2017: Immunobiology
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