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K F Paton, N Kumar, R S Crowley, J L Harper, T E Prisinzano, B M Kivell
BACKGROUND: Drugs activating the mu opioid receptor are routinely used to treat severe acute and chronic pain. Unfortunately, side effects including nausea, constipation, respiratory depression, addiction and tolerance can limit clinical utility. In contrast, kappa opioid receptor (KOPr) agonists, such as Salvinorin A (SalA), have analgesic properties with little potential for abuse. METHODS: We evaluated SalA and the novel analogue β-tetrahydropyran Salvinorin B (β-THP SalB) for the ability to modulate pain and inflammation in vivo...
February 3, 2017: European Journal of Pain: EJP
E Cordova, I Miglia, F Festuccia, M G Sarlo, G Scornavacca, G Punzo, P Menè, C Fofi
OBJECTIVES: Despite universal infection control precautions, the risk of hepatitis B virus (HBV) infection in patients on chronic haemodialysis (HD) remains high. For this reason anti-HBV vaccination is recommended in these subjects. In hemodialyzed patients vaccinal response is often suboptimal and it's not clear what factors may influence it. STUDY DESIGN: The aim of our study is to assess the influence of some clinical and laboratory factors on seroconversion rate after anti HBV vaccination in a cohort of patients on maintenance HD...
January 2017: Annali di Igiene: Medicina Preventiva e di Comunità
Piaoting Guo, Songpo Wang, Wei Liang, Wenjing Wang, Huijun Wang, Miaomiao Zhao, Xiaowei Liu
Salvianolic acid B (SalB) a water‑soluble phenolic compound, extracted from Salvia miltiorrhiza, has previously been demonstrated to reverse tumor multidrug resistance (MDR), including in colorectal cancer. Reactive oxygen species (ROS) are oxygen radicals generated during aerobic metabolism (superoxide and hydroxyl radicals) and superoxide easily generating free radicals (H2O2). The concept that increased ROS levels can lead to augmented tumor cell‑sensitivity to chemotherapy drugs has become notable. The aim of the present study was to elucidate the role of ROS in mediating the effect of SalB on drug resistance and the correlation with drug resistance‑associated protein, P‑glycoprotein (P‑gp), and apoptosis‑associated proteins, B‑cell lymphoma 2 (Bcl‑2) and Bcl‑2‑associated X (Bax)...
February 2017: Molecular Medicine Reports
Ning Zhang, Yan Hu, Chunchun Ding, Wenjing Zeng, Wen Shan, Hui Fan, Yan Zhao, Xue Shi, Lili Gao, Ting Xu, Ruiwen Wang, Dongyan Gao, Jihong Yao
Salvianolic acid B (SalB), a water-soluble polyphenol extracted from Radix Salvia miltiorrhiza, has been reported to possess many pharmacological activities. This study investigated the hepatoprotective effects of SalB in chronic alcoholic liver disease (ALD) and explored the related signaling mechanisms. In vivo, SalB treatment significantly attenuated ethanol-induced liver injury by blocking the elevation of serum aminotransferase activities and markedly decreased hepatic lipid accumulation by reducing serum and liver triglyceride (TG) and total cholesterol (TC) levels...
February 5, 2017: Toxicology Letters
Ming-Qing Huang, Cai-Jie Zhou, Yi-Ping Zhang, Xiao-Qin Zhang, Wen Xu, Jing Lin, Pei-Jian Wang
BACKGROUND/AIMS: Salvianolic acid B (Sal B), a major polyphenolic compound of Salvia miltiorrhiza Bunge, has been shown to possess potential antidiabetic activities. However, the action mechanism of SalB in type 2 diabetes has not been investigated extensively. The present study was designed to investigate the effects of Sal B on diabetes-related metabolic changes in a spontaneous model of type 2 diabetes, as well as its potential molecular mechanism. METHODS: Male C57BL/KsJ-db/db mice were orally treated with Sal B (50 and 100 mg/kg) or metformin (positive drug, 300 mg/kg) for 6 weeks...
2016: Cellular Physiology and Biochemistry
Juan Yu, Renshan Chen, Yafang Tan, Jiashin Wu, Jianyong Qi, Minzhou Zhang, Weiwang Gu
BACKGROUND: Heart failure(HF) is a dangerous disease that affects millions of patients. Radix Salvia is widely used in Chinese clinics to treat heart diseases. Salvianolic acid B(SalB) is the major active component of Radix Salvia. This study investigated the mechanisms of action and effects of SalB on HF in an experimental mouse model of HF. METHODS: We created a mouse model of HF by inducing pressure overload with transverse aortic constriction(TAC) surgery for 2 weeks and compared among 4 study groups: SHAM group (n = 10), TAC group (n = 9), TAC+MET group (metprolol, positive drug treatment, n = 9) and TAC+SalB group (SalB, 240 mg•kg-1•day-1, n = 9)...
2016: PloS One
Juraj Koska, Marlies K Ozias, James Deer, Julie Kurtz, Arline D Salbe, S Mitchell Harman, Peter D Reaven
BACKGROUND: Increased consumption of high-fat diets is associated with the development of insulin resistance and type 2 diabetes. Current models to study the mechanisms of high-fat diet-induced IR in humans are limited by their long duration or low efficacy. In the present study we developed and characterized an acute dietary model of saturated fatty acid-enriched diet induced insulin resistance. METHODS: High caloric diets enriched with saturated fatty acids (SFA) or carbohydrates (CARB) were evaluated in subjects with normal and impaired glucose tolerance (NGT or IGT)...
November 2016: Metabolism: Clinical and Experimental
Yongjun Fang, Hailiang Mei, Binhui Zhou, Xiaohu Xiao, Meng Yang, Yacheng Huang, Xiangyu Long, Songnian Hu, Chaorong Tang
Along with changes in morphology in the course of maturation, leaves of Hevea brasiliensis become more resistant to leaf diseases, including the South American Leaf Blight (SALB), a devastating fungal disease of this economically important tree species. To understand the underlying mechanisms of this defense, and to identify the candidate genes involved, we sequenced the Hevea leaf transcriptome at four developmental stages (I to IV) by Illumina sequencing. A total of 62.6 million high-quality reads were generated, and assembled into 98,796 unique transcripts...
2016: Scientific Reports
Jurriaan J J Gillissen, Seyed R Tabaei, Nam-Joon Cho
The recently introduced solvent-assisted lipid bilayer (SALB) formation method allows one to efficiently fabricate planar, lipid bilayers on solid supports and can be used for various applications. It involves the introduction of an aqueous buffer into a mixture of lipid and alcohol, which is incubated on a solid support. The associated phase changes in the ternary bulk system are accompanied by the formation of a lipid bilayer at the solid-liquid interface. While the phase behavior of the ternary bulk system is well understood, the mechanism of bilayer assembly at the solid-liquid interface remains to be elucidated, including whether the adsorption process is limited by diffusion of the lipid in the bulk or by lipid binding kinetics onto the surface...
September 21, 2016: Physical Chemistry Chemical Physics: PCCP
Xiang Liu, Yun Liu, Yang Yang, Jiadai Xu, Deshu Dai, Chao Yan, Xiangyang Li, Renxian Tang, Chen Yu, Hongqi Ren
BACKGROUND: Oxidative stress is a leading cause of puromycin aminonucleoside (PAN)-induced nephrosis. As the inhibition of oxidative stress may improve injury of podocyte, we aimed at examining the effect of total phenolic acid extract of Salvia przewalskii (SPE) on PAN-induced oxidative stress in vivo and in vitro. METHODS: Seventy-two male Sprague-Dawley rats were randomly assigned into 6 groups (n = 12), PAN alone, tacrolimus (TAC), SPE (50, 100 and 200 mg/kg) and normal control group...
2016: Nephron
Bin Liu, Bo Cao, Di Zhang, Na Xiao, Hong Chen, Guo-Qiang Li, Shou-Chun Peng, Lu-Qing Wei
The present study was aimed at exploring the protective effects of Salvianolic acid B (SalB) against paraquat (PQ)-induced lung injury in mice. Lung fibrotic injuries were induced in mice by a single intragastrical administration of 300mg/kg PQ, then the mice were administrated with 200mg/kg, 400mg/kg SalB, 100mg/kg vitamin C (Vit C) and dexamethasone (DXM) for 14days. PQ-triggered structure distortion, collagen overproduction, excessive inflammatory infiltration, pro-inflammatory cytokine release, and oxidative stress damages in lung tissues and mortality of mice were attenuated by SalB in a dose-dependent manner...
October 15, 2016: Toxicology and Applied Pharmacology
Monika Siegrist, Ellen Freiberger, Barbara Geilhof, Johannes Salb, Christian Hentschke, Peter Landendoerfer, Klause Linde, Martin Halle, Wolfgang A Blank
BACKGROUND: Falls and fall-related injuries are common in community-dwelling elderly people. Effective multifactorial fall prevention programs in the primary care setting may be a promising approach to reduce the incidence rate of falls. METHODS: In a cluster randomized trial in 33 general practices 378 people living independently and at high risk of falling (65 to 94 years old; 285 women) were allocated to either a 16 week exercise-based fall prevention program including muscle strengthening and challenging balance training exercises, combined with a 12 week home-based exercise program (222 participants), or to usual care (156 participants)...
May 27, 2016: Deutsches Ärzteblatt International
Hongquan Li, Linjun Shi, Jie Wei, Chenping Zhang, Zengtong Zhou, Lan Wu, Wei Liu
Salvianolic acid B (SalB) was demonstrated to be a promising chemopreventive agent for head and neck squamous cell carcinoma (HNSCC) in the previous studies by our and other research institution, but the properties like low efficacy, poor systemic delivery, and low bioavailability has hampered its clinical applications. To continue our research program focused on the use of natural compounds on cancer chemoprevention, we propose a first example of phospholipid complex loaded nanoparticles (PLC-NPs) encapsulating SalB as a potential carrier for intervention of HNSCC (HN13, HN30) cells and precancer Leuk1 cells in this study...
November 1, 2016: Colloids and Surfaces. B, Biointerfaces
Jin-Qiang Zhang, Xiao-Hui Wu, Yi Feng, Xiao-Fang Xie, Yong-Hua Fan, Shuo Yan, Qiu-Ying Zhao, Cheng Peng, Zi-Li You
AIM: Major depressive disorder (MDD) is a debilitating mental disorder associated with dysfunction of the neurotransmitter-neuroendocrine system and neuroinflammatory responses. Salvianolic acid B (SalB) has shown a variety of pharmacological activities, including anti-inflammatory, antioxidant and neuroprotective effects. In this study, we examined whether SalB produced antidepressant-like actions in a chronic mild stress (CMS) mouse model, and explored the mechanisms underlying the antidepressant-like actions of SalB...
September 2016: Acta Pharmacologica Sinica
Ying Tang, Dan Huang, Mei-Hua Zhang, Wen-Sheng Zhang, Yu-Xin Tang, Zheng-Xiang Shi, Li Deng, Dai-Han Zhou, Xin-Yi Lu
Alzheimer's disease (AD) is a neurodegenerative disease in humans. The accumulation of amyloid-β (Aβ) plays a critical role in the pathogenesis of AD. Previous studies indicated that Salvianolic acid B (SalB) could ameliorate Aβ-induced memory impairment. However, whether SalB could influence the generation of Aβ is unclear. Here, we show that SalB (25, 50, or 100 µM) reduces the generation of Aβ40 and Aβ42 in culture media by decreasing the protein expressions of BACE1 and sAPPβ in SH-SY5Y-APPsw cells...
June 1, 2016: Nutrients
Chantal Donovan, Huei Jiunn Seow, Jane E Bourke, Ross Vlahos
β2-adrenoceptor agonists are the mainstay therapy for patients with asthma but their effectiveness in cigarette smoke (CS)-induced lung disease such as chronic obstructive pulmonary disease (COPD) is limited. In addition, bronchodilator efficacy of β2-adrenoceptor agonists is decreased during acute exacerbations of COPD (AECOPD), caused by respiratory viruses including influenza A. Therefore, the aim of the present study was to assess the effects of the β2-adrenoceptor agonist salbutamol (SALB) on small airway reactivity using mouse precision cut lung slices (PCLS) prepared from CS-exposed mice and from CS-exposed mice treated with influenza A virus (Mem71, H3N1)...
May 1, 2016: Clinical Science (1979-)
Kelly N Salb, Daniel M Wido, Thomas E Stewart, Denis J DiAngelo
Ankle instantaneous axis of rotation (IAR) measurements represent a more complete parameter for characterizing joint motion. However, few studies have implemented this measurement to study normal, injured, or pathological foot ankle biomechanics. A novel testing protocol was developed to simulate aspects of in vivo foot ankle mechanics during mid-stance gait in a human cadaveric specimen. A lower leg was mounted in a robotic testing platform with the tibia upright and foot flat on the baseplate. Axial tibia loads (ATLs) were controlled as a function of a vertical ground reaction force (vGRF) set at half body weight (356 N) and a 50% vGRF (178 N) Achilles tendon load...
2016: Applied Bionics and Biomechanics
Seyed R Tabaei, Wei Beng Ng, Sang-Joon Cho, Nam-Joon Cho
Exciting progress has been made in the use of graphene for bio- and chemical sensing applications. In this regard, interfacing lipid membranes with graphene provides a high-sealing interface that is resistant to nonspecific protein adsorption and suitable for measuring biomembrane-associated interactions. However, a controllable method to form well-defined lipid bilayer coatings remains elusive, and there are varying results in the literature. Herein, we demonstrate how design strategies based on molecular self-assembly and surface chemistry can be employed to coat graphene surface with different classes of lipid membrane architectures...
May 11, 2016: ACS Applied Materials & Interfaces
Rubens Souza de Oliveira, Lanna Jamile Corrêa da Costa, Fernanda Atanaena Gonçalves de Andrade, Wilson Uieda, Luzia Fátima Alves Martorelli, Ana Paula de Arruda Geraldes Kataoka, Elizabeth Salbé Travassos da Rosa, Pedro Fernando da Costa Vasconcelos, Armando de Souza Pereira, Antônio Ismael Barros do Carmo, Marcus Emanuel Barroncas Fernandes
The outbreaks of rabies in humans transmitted by Desmodus rotundus in 2004 and 2005, in the northeast of the Brazilian State of Para, eastern Amazon basin, made this a priority area for studies on this zoonosis. Given this, the present study provides data on this phenomenon in an urban context, in order to assess the possible circulation of the classic rabies virus (RABV) among bat species in Capanema, a town in the Amazon basin. Bats were collected, in 2011, with mist nets during the wet and dry seasons. Samples of brain tissue and blood were collected for virological and serological survey, respectively...
December 2015: Revista do Instituto de Medicina Tropical de São Paulo
Daniela Martins Koop, Maryannick Rio, Xavier Sabau, Saulo Emilio Almeida Cardoso, Chantal Cazevieille, Julie Leclercq, Dominique Garcia
South American Leaf Blight (SALB), caused by the ascomycete Pseudocercospora ulei, is responsible for the low productivity of rubber trees in Latin America and is a serious threat to rubber plantations in Asia and Africa, where the rubber trees are derived from highly susceptible clones. Three contrasted genotypes were chosen for their levels of resistance to the pathogen: FX2784 (totally resistant), MDF180 (partially resistant) and PB314 (susceptible). Array analyses were previously performed to identify genes differentially expressed in resistant and susceptible genotypes...
July 2016: Plant Physiology and Biochemistry: PPB
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