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https://www.readbyqxmd.com/read/28931414/coagulase-gene-polymorphism-enterotoxigenecity-biofilm-production-and-antibiotic-resistance-in-staphylococcus-aureus-isolated-from-bovine-raw-milk-in-north-west-india
#1
Vishnu Sharma, Sanjita Sharma, Dinesh Kumar Dahiya, Aarif Khan, Manisha Mathur, Aayushi Sharma
BACKGROUND: Staphylococcus aureus is the predominant bacterium responsible for various diseases in animals and humans. Preventive strategies could be better implemented by understanding the prevalence, genetic patterns, and the presence of enterotoxin and biofilm-producing genes along with the antibiotic susceptibility of this organism. This study was conducted in Rajasthan, the northwestern state of India, holding the largest population of cattle that makes it the second largest milk producer in India and no such prior information is available on these aspects...
September 20, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28929686/-borneol-promotes-catalpol-and-puerarin-crossing-through-blood-brain-barrier-in-focal-cerebral-ischemic-rats
#2
Jun-Jie Wu, Hong-Jin Wang, Shuai Yang, Yang Liu, Xiao-Yu Xu
Previous studies showed that borneol could promote some drugs crossing through the blood-brain-barrier (BBB) at certain conditions. However, the mechanism has not been clarified yet. This study aimed to investigate the effect of bornrol on promoting catalpol and puerarin through BBB and explore the relevant mechanism. The focal cerebral ischemic rats were divided into 7 groups randomly and then were administered corresponding drugs: model group (M, solvent), catalpol-puerarin group (ZG, catalpol 45 mg•kg⁻¹+puerarin 200 mg•kg⁻¹), catalpol-puerarin-bornrol group(ZGB, catalpol 45 mg•kg⁻¹+puerarin 200 mg•kg⁻¹ +bornrol 200 mg•kg⁻¹), catalpol-bornrol group(ZB, catalpol 45 mg•kg⁻¹ +bornrol 200 mg•kg⁻¹), puerarin-bornrol group(GB, puerarin 200 mg•kg⁻¹ +bornrol 200 mg•kg⁻¹), butoxamine-ZG group(BTX+ZG, butoxamine 1...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28926934/the-beneficial-effects-of-allicin-in-chronic-kidney-disease-are-comparable-to-losartan
#3
Ehécatl Miguel Ángel García Trejo, Abraham Said Arellano Buendía, Omegar Sánchez Reyes, Fernando Enrique García Arroyo, Raúl Arguello García, María Lilia Loredo Mendoza, Edilia Tapia, Laura Gabriela Sánchez Lozada, Horacio Osorio Alonso
Recent studies suggest that allicin may play a role in chronic kidney disease (CKD), reducing hypertension and oxidative stress and improving renal dysfunction. In the present study, CKD was induced by 5/6 nephrectomy and the animals were divided into four treatment groups as follows: control (C), CKD, CKD+allicin (40 mg/kg pathway oral) (CKDA), and CKD+Losartan (20 mg/kg) (CKDL). After CKD induction, the rats developed hypertension from week 3 to the end of the study. This was associated with increased creatinine and blood urea nitrogen (BUN) levels in serum, increased albuminuria, increased urinary excretion of N-acetyl-β-d-glucosaminidase (NAG), increased nephrin expression, and incrased histological alterations in the cortex...
September 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28925872/abdominal-aorta-aneurysm-aaa-is-there-a-role-for-prevention-and-therapy-using-antioxidants
#4
Joël Pincemail, Jean-Olivier Defraigne, Audrey Courtois, Adelin Albert, Jean-Paul Cheramy-Bien, Natzi Sakalihasan
Abdominal aortic aneurysm (AAA) is a degenerative disease that cause mortality in people aged > 65 years. Increased reactive oxygen species (ROS) and oxidative stress seems to play a pivotal role in AAA pathogenesis. Several sources of ROS have been identified in aortic tissues using experimental models: inflammation, increased activity of NAD(P)H or NOX, over-expression of inducible nitric oxide synthase (iNOS), uncoupled endothelial nitric oxide synthase (eNOS), platelets activation and iron release from hemoglobin...
September 18, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28923916/critical-role-of-caveolin-1-in-ocular-neovascularization-and-multitargeted-antiangiogenic-effects-of-cavtratin-via-jnk
#5
Yida Jiang, Xianchai Lin, Zhongshu Tang, Chunsik Lee, Geng Tian, Yuxiang Du, Xiangke Yin, Xiangrong Ren, Lijuan Huang, Zhimin Ye, Wei Chen, Fan Zhang, Jia Mi, Zhiqin Gao, Shasha Wang, Qishan Chen, Liying Xing, Bin Wang, Yihai Cao, William C Sessa, Rong Ju, Yizhi Liu, Xuri Li
Ocular neovascularization is a devastating pathology of numerous ocular diseases and is a major cause of blindness. Caveolin-1 (Cav-1) plays important roles in the vascular system. However, little is known regarding its function and mechanisms in ocular neovascularization. Here, using comprehensive model systems and a cell permeable peptide of Cav-1, cavtratin, we show that Cav-1 is a critical player in ocular neovascularization. The genetic deletion of Cav-1 exacerbated and cavtratin administration inhibited choroidal and retinal neovascularization...
September 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28922718/tanshinone-iia-protects-against-chronic-intermittent-hypoxia-induced-myocardial-injury-via-activating-the-endothelin-1-pathway
#6
Na Wang, Yue Chang, Lingling Chen, Ya-Jing Guo, Ya-Shuo Zhao, Qiu-Hong Guo, En-Sheng Ji
Tanshinone IIA (Tan IIA) may exert significant protective effects against heart oxidative stress damage in obstructive sleep apnoea (OSA) syndrome. Chronic intermittent hypoxia (CIH)-triggered left ventricular dysfunction is used in a rat model to mimic CIH in OSA patients. 48 rats were randomly divided into three groups: normal control (NC) group, CIH group and CIH+Tan IIA group with 16 rats in each group. At the end of experiment (day 21), the blood pressure, Plasma ET-1 and NO content, hemodynamic indexes, heart histology, myocardial apoptosis as well as the expression of eNOS, ET-1, ETA receptor and ETB receptor were compared among different groups...
September 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28919424/adiponectin-modulates-the-function-of-endothelial-progenitor-cells-via-ampk-enos-signaling-pathway
#7
Shuhong Wang, Jie Miao, Meijie Qu, Guo-Yuan Yang, Linhui Shen
Endothelial progenitor cells have been shown to differentiate into endothelial cells and to play a pivotal role in vascular homeostasis. Adiponectin has anti-atherogenic and anti-inflammatory properties via directly acting on vascular cells. The aim of the present study is to explore the effect of adiponectin on major functions involved in survival, migration, and tube formation of endothelial progenitor cells and to explore the underlying mechanism. In this study, we transferred adiponectin gene into endothelial progenitor cells via lentiviral vectors and investigated the proliferation, migration and tube formation of these transfected cells...
September 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28917976/low-molecular-weight-fucoidan-ameliorates-hindlimb-ischemic-injury-in-type-2-diabetic-rats
#8
Zhiqiang Wang, Tiantian Liu, Xiaoping Chen, Hongjie You, Quanbin Zhang, Jingyi Xue, Yuanyuan Zheng, Dali Luo
ETHNOPHARMACOLOGICAL RELEVANCE: Low molecular weight fucoidan (LMWF), extracted from Laminaria japonica Areschoug, is a traditional Chinese medicine, commonly used to alleviate edema, particularly for feet with numbness and pain. AIM OF THE STUDY: Diabetic mellitus (DM) patients are at high risk of developing peripheral arterial disease (PAD). Individuals with DM and PAD co-morbidity have a much higher risk of critical limb ischemia. LMWF showed several beneficial effects, such as anti-inflammation, anti-thrombosis, and enhancing revascularization...
September 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28917362/a-comparative-study-of-the-antacid-effect-of-some-commonly-consumed-foods-for-hyperacidity-in-an-artificial-stomach-model
#9
Vandana Panda, Priyanka Shinde, Jyoti Deora, Pankaj Gupta
OBJECTIVES: The incorporation of certain alkalinizing vegetables, fruits, milk and its products in the diet has been known to alleviate hyperacidity. These foods help to restore the natural gastric balance and function, curb acid reflux, aid digestion, reduce the burning sensation due to hyperacidity and soothe the inflamed mucosa of the stomach. The present study evaluates and compares the antacid effect of broccoli, kale, radish, cucumber, lemon juice, cold milk and curd in an artificial stomach model...
October 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28916474/nox4-regulates-the-enos-uncoupling-process-in-aging-endothelial-cells
#10
Hwa-Young Lee, Hyung-Ryong Kim, Han-Jung Chae
ROS and its associated signaling contribute to vascular aging-associated endothelial disturbance. Since the non-effective endothelial nitric oxide synthase (eNOS) coupling status is related to vascular aging-related phenotypes, eNOS coupled/uncoupled system signaling was studied in human umbilical vein endothelial cells (HUVEC). Nitric oxide (NO) and eNOS Ser1177 were significantly decreased, whereas O2(-) (superoxide anion radical) increased with passage number. In aging cells, NADPH oxidase 4 (Nox4), one of the main superoxide generating enzymes, and its associated protein disulfide isomerase (PDI) chaperone were highly activated, and the resultant ER redox imbalance leads to disturbance of protein folding capability, namely endoplasmic reticulum (ER) stress, ultimately inducing dissociation between HSP90 and IRE-1α or PERK, decreasing HSP90 stability and dissociating the binding of eNOS from the HSP90 and leading to eNOS uncoupling...
September 12, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28915536/protective-effect-of-the-standardized-extract-of-ginkgo-biloba-egb761-against-hypertension-with-hypercholesterolemia-induced-renal-injury-in-rats-insights-in-the-underlying-mechanisms
#11
Ahmed O Abdel-Zaher, Hanan S M Farghaly, Abeer E M El-Refaiy, Ahmed M Abd-Eldayem
The potential protective role of the standardized leaf extract of ginkgo biloba (EGb761) on hypertension with hypercholesterolemia-induced renal injury was investigated in rats. Hypertension was induced by L-N(G)-nitroarginine methyl ester (L-NAME) and hypercholesterolemia was induced by feeding rats with a diet containing 1% cholesterol. In these animals repeated treatment with EGb761 produced a progressive reduction in the systolic, diastolic and mean arterial blood pressure (BP). EGb761 increased the progressive reduction in the systolic, diastolic and mean arterial BP induced by repeated administration of losartan with simvastatin...
September 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28914648/dexmedetomidine-maintains-its-direct-cardioprotective-effect-against-ischemia-reperfusion-injury-in-hypertensive-hypertrophied-myocardium
#12
Yusuke Yoshikawa, Naoyuki Hirata, Ryoichi Kawaguchi, Yasuyuki Tokinaga, Michiaki Yamakage
BACKGROUND: Dexmedetomidine (DEX) has a direct cardioprotective effect against ischemia/reperfusion injury through endothelial nitric oxide synthase (eNOS) phosphorylation via α2-adrenoreceptor (α2-AR). By using spontaneously hypertensive rat (SHR) and Wistar-Kyoto (WKY) rat models, the cardioprotective effect of DEX in hypertrophied myocardium and the differential characteristics of cardiac α2-AR and the I1 imidazoline receptor (I1R) were examined. METHODS: Langendorff-perfused rat hearts underwent 40 minutes of global ischemia followed by 120 minutes of reperfusion in the presence or absence of DEX before ischemia...
September 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28914438/antihypercholesterolemic-antioxidant-and-renal-protective-effects-of-mengkudu-rubiaceae-fruit-in-nephropathy-induced-albino-rats
#13
U S Mahadeva Rao, C Shanmuga Sundaram
OBJECTIVE: To assess the modulatory impact of alcoholic extract of fruit of Mengkudu (AEFM, Morinda citrifolia L., Rubiaceae) on renal oxido-lipidemic stress in hypercholesterolemic albino rats. METHODS: Twenty-four male albino rats were randomly divided into four groups with six rats in each group: group I as control, group II fed with hypercholesterolemic diet (HCD) for 45 days (4% cholesterol and 1% cholic acid), Group III rats fed with HCD for 45 days + AEFM (300 mg/kg body weight/day orally) for last 30 days and group IV normal rats fed AEFM alone...
September 15, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28912893/the-role-of-nitric-oxide-during-sonoreperfusion-of-microvascular-obstruction
#14
Francois T H Yu, Xucai Chen, Adam C Straub, John J Pacella
Rationale: Microembolization during PCI for acute myocardial infarction can cause microvascular obstruction (MVO). MVO severely limits the success of reperfusion therapies, is associated with additional myonecrosis, and is linked to worse prognosis, including death. We have shown, both in in vitro and in vivo models, that ultrasound (US) and microbubble (MB) therapy (termed "sonoreperfusion" or "SRP") is a theranostic approach that relieves MVO and restores perfusion, but the underlying mechanisms remain to be established...
2017: Theranostics
https://www.readbyqxmd.com/read/28912276/cavin-2-regulates-the-activity-and-stability-of-endothelial-nitric-oxide-synthase-enos-in-angiogenesis
#15
Gandhi T K Boopathy, Madhura Kulkarni, Sze Yuan Ho, Adrian Boey, Edmond Wei Min Chua, Veluchamy A Barathi, Tom J Carney, Xiaomeng Wang, Wanjin Hong
Angiogenesis is a highly regulated process for formation of new blood vessels from pre-existing ones. Angiogenesis is dysregulated in various pathologies, including age-related macular degeneration, arthritis, and cancer. Inhibiting pathological angiogenesis therefore represents a promising therapeutic strategy for treating these disorders, highlighting the need to study angiogenesis in more detail. To this end, identifying the genes essential for blood vessel formation and elucidating their function are crucial for a complete understanding of angiogenesis...
September 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28912168/alternative-polyadenylation-of-prelid1-regulates-mitochondrial-ros-signaling-and-cancer-outcomes
#16
Austin E Gillen, Heather M Brechbuhl, Tomomi M Yamamoto, Enos C Kline, Manoj Pillai, Jay Hesselberth, Peter Kabos
Disruption of post-transcriptional gene regulation is a critical step in oncogenesis that can be difficult to observe using traditional molecular techniques. To overcome this limitation, a modified polyadenylation site sequencing (PAS-seq) protocol was used to generate a genome-wide map of alternative polyadenylation (APA) events in human primary breast tumor specimens and matched normal tissue. This approach identified an APA event in the PRELID1 mRNA that enhances its steady state level and translational efficiency, and is a strong breast cancer subtype-dependent predictor of patient clinical outcomes...
September 14, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28912066/the-camp-effectors-pka-and-epac-activate-endothelial-no-synthase-through-pi3k-akt-pathway-in-human-endothelial-cells
#17
Verónica García-Morales, María Luaces-Regueira, Manuel Campos-Toimil
3',5'-cyclic adenosine monophosphate (cAMP) exerts an endothelium-dependent vasorelaxant action by stimulating endothelial NO synthase (eNOS) activity, and the subsequent NO release, through cAMP protein kinase (PKA) and exchange protein directly activated by cAMP (Epac) activation in endothelial cells. We have here investigated the mechanism by which the cAMP-Epac/PKA pathway activates eNOS. cAMP-elevating agents (forskolin and dibutyryl-cAMP) and the joint activation of PKA (6-Bnz-cAMP) and Epac (8-pCPT-2'-O-Me-cAMP) increased cytoplasmic Ca(2+) concentration ([Ca(2+)]c) in ≤ 30% of fura-2-loaded isolated human umbilical vein endothelial cells (HUVEC)...
September 11, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28904082/a-relative-l-arginine-deficiency-contributes-to-endothelial-dysfunction-across-the-stages-of-the-menopausal-transition
#18
Jelena Klawitter, Kerry L Hildreth, Uwe Christians, Wendy M Kohrt, Kerrie L Moreau
Vascular endothelial function declines across the menopause transition in women. We tested the hypothesis that reduced availability of the endothelial nitric oxide synthase [eNOS] substrate L-arginine is an underlying mechanism to vascular endothelial dysfunction across menopause stages. Endothelial function (brachial artery flow-mediated dilation [FMD]) and plasma markers of L-arginine metabolism (citrulline, N(G)-mono-methyl-ւ-arginine [L-NMMA] asymmetric dimethylarginine [ADMA] and N(G)-N('G)-dimethyl-l-arginine [SDMA]), were measured in 129 women: 36 premenopausal (33 ± 7 years), 16 early- (49 ± 3 years) or 21 late- (50 ± 4 years) perimenopausal, and 21 early- (55 ± 3 years) or 35 late- (61 ± 4 years) postmenopausal...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28903885/the-effects-of-baicalin-on-myoglobinuric-acute-renal-failure-in-rats
#19
Özlem Yalçınkaya Yavuz, Nurettin Aydoğdu, Ebru Taştekin, Necdet Süt
BACKGROUND: Myoglobinuric acute kidney injury (MAKI) is a uremic syndrome which develops due to damage of skeletal muscle. It was demonstrated that free radicals and nitric oxide play an important role in pathogenesis of MAKI. Baicalin has multiple bioactivities including antimicrobial, anti-inflammatory, and antioxidant properties, as it is a potent free radical scavenger. AIMS: In this study, we aimed to investigte the nephroprotective mechanism of Baicalin on MAKI...
September 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28903186/maslinic-acid-inhibits-impairment-of-endothelial-functions-induced-by-high-glucose-in-haec-cells-through-improving-insulin-signaling-and-oxidative-stress
#20
Feng Li, Qingxian Li, Xianai Shi, Yanghao Guo
Impaired endothelial functions are closely associated with many chronic vascular-related diseases. Maslinic acid (MA), a natural pentacyclic triterpene compound, has received more and more attentions in recent years due to a variety of bioactivities. In the present study, we investigated the effect of MA on impaired endothelial functions in human aortic endothelial cells (HAEC) induced by high glucose treatment and discussed its possible mechanism. We showed that MA decreased the ROS level, inhibited the inflammatory cytokines expression, facilitated insulin-mediated IRS-1/PI3K/Akt/eNOS signaling and suppressed the cellular apoptosis ratio induced by high glucose...
September 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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