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https://www.readbyqxmd.com/read/29356344/fabrication-of-magnetic-zinc-adeninate-metal-organic-frameworks-for-the-extraction-of-benzodiazepines-from-urine-and-wastewater
#1
Suling Zhang, Weixuan Yao, Defeng Fu, Chunxiao Zhang, Hongting Zhao
In this study, an alternative method for synthesizing magnetic cobalt adeninate metal-organic frameworks was developed, and the synthesized materials were examined for their potential application for separating and enriching benzodiazepines from complex samples. Benzodiazepines, widely used as hypnotics, muscle relaxants, sedatives, and anxiolytics, are a class of drugs that require being accurately detected and monitored. Results showed that Fe3 O4 nanoparticles could be well anchored onto the external surface of cobalt adeninate metal-organic frameworks by using amino-silane as a linkage...
January 22, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29351457/important-role-of-endothelium-dependent-hyperpolarization-in-pulmonary-microcirculation-in-male-mice-implications-for-hypoxia-induced-pulmonary-hypertension
#2
Shuhei Tanaka, Takashi Shiroto, Shigeo Godo, Hiroki Saito, Yosuke Ikumi, Akiyo Ito, Shoko Kajitani, Saori Sato, Hiroaki Shimokawa
Endothelium-dependent hyperpolarization (EDH) plays important roles in systemic circulation, whereas its role in pulmonary circulation remains largely unknown. Furthermore, the underlying mechanisms of pulmonary hypertension (PH) also remain to be elucidated. We thus aimed to elucidate the role of EDH in pulmonary circulation in general and in PH in particular. In isolated perfused lung using male wild-type mice, endothelium-dependent relaxations to bradykinin (BK) were significantly reduced in the presence of Nω-nitro-L-arginine (L-NNA) by ~50% as compared with those in the presence of indomethacin, and the combination of apamin plus charybdotoxin abolished the residual relaxations, showing the comparable contributions of nitric oxide (NO) and EDH in pulmonary microcirculation under physiological conditions...
January 5, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29347853/sar-thresholds-for-electromagnetic-exposure-using-functional-thermal-dose-limits
#3
Fatemeh Adibzadeh, Margarethus M Paulides, Gerard C van Rhoon
BACKGROUND AND PURPOSE: To protect against any potential adverse effects to human health from localised exposure to radio frequency (100 kHz-3 GHz) electromagnetic fields (RF EMF), international health organisations have defined basic restrictions on specific absorption rate (SAR) in tissues. These exposure restrictions incorporate safety factors which are generally conservative so that exposures that exceed the basic restrictions are not necessarily harmful. The magnitude of safety margin for various exposure scenarios is unknown...
January 18, 2018: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29345195/mitochondrial-dysfunction-and-pulmonary-hypertension-cause-effect-or-both
#4
Jeffrey D Marshall, Isabel Bazan, Yi Zhang, Wassim H Fares, Patty J Lee
Pulmonary hypertension describes a heterogeneous disease defined by increased pulmonary artery pressures, and progressive increase in pulmonary vascular resistance due to pathologic remodeling of the pulmonary vasculature involving pulmonary endothelial cells, pericytes, and smooth muscle cells.  This process occurs under various conditions, and though these populations vary, the clinical manifestations are the same: progressive dyspnea, increases in right ventricular (RV) afterload and dysfunction, RV-pulmonary artery uncoupling, and right-sided heart failure with systemic circulatory collapse...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29343259/influence-of-apocynin-on-cardiac-remodeling-in-rats-with-streptozotocin-induced-diabetes-mellitus
#5
R Gimenes, C Gimenes, C M Rosa, N P Xavier, D H S Campos, A A H Fernandes, M D M Cezar, G N Guirado, L U Pagan, I D Chaer, D C Fernandes, F R Laurindo, A C Cicogna, M P Okoshi, K Okoshi
BACKGROUND: Increased reactive oxygen species (ROS) generation in diabetes mellitus (DM) is an important mechanism leading to diabetic cardiomyopathy. Apocynin, a drug isolated from the herb Picrorhiza kurroa, is considered an antioxidant agent by inhibiting NADPH oxidase activity and improving ROS scavenging. This study analyzed the influence of apocynin on cardiac remodeling in diabetic rats. METHODS: Six-month-old male Wistar rats were assigned into 4 groups: control (CTL, n = 15), control + apocynin (CTL + APO, n = 20), diabetes (DM, n = 20), and diabetes + apocynin (DM + APO, n = 20)...
January 17, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29337194/fasudil-ameliorates-the-ischemia-reperfusion-oxidative-injury-in-rat-hearts-through-suppression-of-myosin-regulatory-light-chain-nadph-oxidase-2-pathway
#6
Yi-Shuai Zhang, Li-Jing Tang, Hua Tu, Shi-Jing Wang, Bin Liu, Xiao-Jie Zhang, Nian-Sheng Li, Xiu-Ju Luo, Jun Peng
Fasudil is a potent Rho-kinase (ROCK) inhibitor and can relax smooth muscle or cardiac muscle contraction through decreasing the phosphorylation level of myosin regulatory light chain (p-MLC20 or p-MLC2v), while p-MLC2v can function as a transcription factor to promote the NADPH oxidase 2 (NOX2) expression in rat hearts subjected to ischemia/reperfusion (I/R). This study aims to explore whether fasudil can protect the rat hearts against I/R oxidative injury through suppressing NOX2 expression via reduction of p-MLC2v level...
January 11, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29336645/physical-exercise-prior-to-hematopoietic-stem-cell-transplantation-a-feasibility-study
#7
Inge E P M van Haren, J Bart Staal, Carin M Potting, Femke Atsma, Thomas J Hoogeboom, Nicole M A Blijlevens, Maria W G Nijhuis-van der Sanden
PURPOSE: This study explores the feasibility and preliminary effectiveness of an exercise program in people scheduled for hematopoietic stem cell transplantation (HSCT). METHODS: In this controlled clinical trial, we compare pre-transplantation exercise to no exercise in the waiting period for an allogeneic of autologous HSCT. The supervised individually tailored exercise program (4-6 weeks) consisted of aerobic endurance, muscle strength, and relaxation exercises, administered twice a week in the period prior to HSCT...
January 16, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29335865/beneficial-effect-of-berberis-amurensis-rupr-on-penile-erection
#8
Rui Tan, Yun Jung Lee, Kyung Woo Cho, Dae Gill Kang, Ho Sub Lee
OBJECTIVE: To investigate whether the methanol extract of Berberis amurensis Rupr. (BAR) augments penile erection using in vitro and in vivo experiments. METHODS: The ex vivo study used corpus cavernosum strips prepared from adult male New Zealand White rabbits. In in vivo studies for intracavernous pressure (ICP), blood pressure, mean arterial pressure (MAP), and increase of peak ICP were continuously monitored during electrical stimulation of Sprague-Dawley rats...
January 15, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29335232/smartphone-app-using-mindfulness-meditation-for-women-with-chronic-pelvic-pain-memphis-protocol-for-a-randomized-feasibility-trial
#9
Elizabeth Ball, Sian Newton, Brennan C Kahan, Gordon Forbes, Neil Wright, Clara Cantalapiedra Calvete, Harry A L Gibson, Ewelina Rogozinska, Carol Rivas, Stephanie J C Taylor, Judy Birch, Julie Dodds
BACKGROUND: Female chronic pelvic pain (CPP) is defined as intermittent or constant pelvic or lower abdominal pain occurring in a woman for at least 6 months. Up to a quarter of women are estimated to be affected by CPP worldwide and it is responsible for one fifth of specialist gynecological referrals in the United Kingdom. Psychological interventions are commonly utilized. As waiting times and funding capacity impede access to face-to-face consultations, supported self-management (SSM) has emerged as a viable alternative...
January 15, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29333370/the-efficacy-of-oral-habit-modification-on-headache
#10
Farzaneh Agha-Hosseini, Nafiseh Sheykhbahaei, Iraj Mirzaii-Dizgah, Farzad Fatehi
Objectives: Headache is the most common complaint of patients suffering from temporomandibular joint disorders (TMDs). Thus, temporomandibular joint (TMJ) examinations maybe necessary in patients with headache. Considering the high prevalence of bruxism and TMDs in patients with headache the effects of conservative TMD treatment on headache should be assessed. Materials and Methods: Patients were questioned about headaches in the past three months. Those responding affirmatively to this question were examined for TMD and bruxism...
December 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29332305/oblique-thyroarytenoid-muscle-in-humans-an-independent-muscle-or-an-accessory-belly
#11
Shin-Hyo Lee, Ki-Seok Koh, Wu-Chul Song
OBJECTIVES/HYPOTHESIS: This study aimed to determine the prevalence and morphological variations of the oblique thyroarytenoid (TA) muscle in humans. STUDY DESIGN: Cadaveric anatomic dissections. METHODS: One hundred hemilarynges from 50 formalin-embalmed cadavers were dissected to investigate the morphology of muscle fibers of the TA muscle. RESULTS: Thirty-six (36%) hemilarynges were found to have a distinct oblique belly superficial to the TA muscle...
January 14, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29332117/pseudocholinesterase-levels-in-patients-under-electroconvulsive-therapy
#12
Gamze Küçükosman, Özcan Pişkin, Volkan Hancı, Rahşan D Okyay, Hilal Ayoğlu, Bülent S Yurtlu, Mehmet Akın, Işıl Ö Turan
In this study, we aimed to retrospectively assess the correlation of pseudocholinesterase (PChE) levels with age, gender, body weight and diagnosed psychiatric diseases in electroconvulsive therapy (ECT) cases. Methods: This retrospective study was conducted at Bülent Ecevit University Hospital, Zonguldak, Turkey, between 2007 and 2011. In the study, 193 ECT case files were retrospectively scanned to evaluate PChE values before ECT and other file information.  Results: There was no difference between gender in terms of PChE levels...
January 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29330066/regulation-of-vascular-tone-homeostasis-by-no-and-h2s-implications-in-hypertension
#13
REVIEW
Sevda Gheibi, Sajad Jeddi, Khosrow Kashfi, Asghar Ghasemi
Nitric oxide (NO) and hydrogen sulfide (H2S) are two gasotransmitters that are produced in the vasculature and contribute to the regulation of vascular tone. NO and H2S are synthesized in both vascular smooth muscle and endothelial cells; NO functions primarily through the sGC/cGMP pathway, and H2S mainly through activation of the ATP-dependent potassium channels; both leading to relaxation of vascular smooth muscle cells. A deficit in the NO/H2S homeostasis is involved in the pathogenesis of various cardiovascular diseases, especially hypertension...
January 9, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29327499/five-year-outcome-of-endoscopic-laser-cricopharyngeal-myotomy-our-experience-in-10-patients
#14
J H Bird, E Warner, R Corbridge
Cricopharyngeal spasm is a failure of the cricopharyngeus muscle to relax and can be a cause of dysphagia. Endoscopic laser cricopharyngeal myotomy with mucosal repair is associated with reduced operative times, inpatient stay and lower morbidity with favourable subjective short-term outcomes, although long-term outcomes are less well known. In our cohort of patients, the majority had a subjectively improved swallow in the long-term although some did have regression of symptoms but remained better than pre-operatively...
January 11, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29325329/-feasibility-of-using-blood-oxygen-level-dependent-magnetic-resonance-imaging-to-evaluate-renal-fibrosis-of-ureteral-obstruction-of-rabbits
#15
T T Zha, Z Y Xing, J Chen, W Xing, J G Zhang, X J Tian
Objective: To investigate the feasibility of blood oxygen level-dependent MR (MR-BOLD) in assessing renal fibrosis of ureteral obstruction of rabbits. Methods: Forty healthy New Zealand rabbits were randomly divided into control group (n=8) and unilateral ureteral obstruction (UUO) group (n=32). The rabbits in the UUO group were subjected to unilateral ureteral obstruction of the left kidney.Coronal T(2) weighted imaging (T(2)WI) and axial BOLD examinations were performed before operation, 2, 4, 6 and 8 W after operation (each subgroup n=8)...
December 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29321968/achalasia-with-massive-oesophageal-dilation-causing-tracheomalacia-and-asthma-symptoms
#16
Ana Gomez-Larrauri, Simon Galloway, Rob Niven
Achalasia is an uncommon oesophageal motor disorder characterized by failure of relaxation of the lower oesophageal sphincter and muscle hypertrophy, resulting in a loss of peristalsis and a dilated oesophagus. Gastrointestinal symptoms are invariably present in all cases of achalasia observed in adults. We report a case of a 34 year-old female patient with long standing history of asthma-like symptoms, labelled as uncontrolled and steroid resistant asthma with no gastrointestinal manifestations. Thoracic CT scan revealed a massive oesophagus due to achalasia, which caused severe tracheomalacia as a result of tracheal compression...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29318929/the-pharmacogenetics-of-medications-used-in-general-anesthesia
#17
Shangchen Xie, Wenjuan Ma, Qulian Guo, Jie Liu, Wei Li, Howard L McLeod, Yijing He
General anesthesia is a state of unconsciousness, amnesia, analgesia and akinesia induced by drugs including opioids, hypnotic-sedative agents, muscle relaxants and antiemetics. Clinical and genetic factors are reported to influence the efficacy and side effects of these agents. Based on the evidence, clinical action is needed to improve clinical outcomes. This review summarizes the latest knowledge with regards to the pharmacogenetics of anesthetics and general anesthesia related complications.
January 10, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29318030/environmental-temperature-and-exercise-modality-independently-impact-central-and-muscle-fatigue-among-people-with-multiple-sclerosis
#18
Geetika Grover, Michelle Ploughman, Devin T Philpott, Liam P Kelly, Augustine J Devasahayam, Katie Wadden, Kevin E Power, Duane C Button
Background: Heat sensitivity and fatigue limit the ability of multiple sclerosis patients to participate in exercise. Objective: The purpose of this study was to determine the optimal aerobic exercise parameters (environmental temperature and exercise modality) to limit exercise-induced central and muscle fatigue among people with multiple sclerosis. Methods: Fourteen people with multiple sclerosis with varying levels of disability completed four randomized exercise sessions at 65% of the maximal volume of oxygen: body-weight supported treadmill cool (16°C), body-weight supported treadmill room (21°C), total-body recumbent stepper cool and total-body recumbent stepper room...
October 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/29317262/sensitivity-to-strain-and-shear-stress-of-isolated-mechanosensitive-enteric-neurons
#19
Eva Maria Kugler, Klaus Michel, David Kirchenbüchler, Georg Dreissen, Agnes Csiszár, Rudolf Merkel, Michael Schemann, Gemma Mazzuoli-Weber
Within the enteric nervous system, the neurons in charge to control motility of the gastrointestinal tract reside in a particular location nestled between two perpendicular muscle layers which contract and relax. We used primary cultured myenteric neurons of male guinea pigs to study mechanosensitivity of enteric neurons in isolation. Ultrafast Neuroimaging with a voltage sensitive dye technique was used to record neuronal activity in response to shear stress and strain. Strain was induced by locally deforming the elastic cell culture substrate next to a neuron...
January 6, 2018: Neuroscience
https://www.readbyqxmd.com/read/29317256/nandrolone-combined-with-strenuous-resistance-training-reduces-vascular-nitric-oxide-bioavailability-and-impairs-endothelium-dependent-vasodilation
#20
Vinicius Guzzoni, Tatiana Sousa Cunha, Vander José das Neves, Larissa Briet, Rafaela Costa, Maria José Costa Sampaio Moura, Vanessa Oliveira, Maria do Carmo Pinho Franco, Pedro Duarte Novaes, Fernanda Klein Marcondes
Anabolic Androgenic Steroids (AASs) misuse has increased among adolescents and recreational athletes due to their potential effects on muscle hypertrophy. On the other hand, AAS might induce alterations on cardiovascular system, although some controversies regarding AAS on vascular properties remain unknown. To address this question, we aimed to investigate the effects of high doses of nandrolone combined with strenuous resistance training (RT) on function and structure of thoracic aorta. Rats were randomized into four groups: non-trained vehicle (NTV), trained vehicle (TV), non-trained nandrolone (NTN), and trained nandrolone (TN), and submitted to 6 weeks of treatment with nandrolone (5mg/kg, twice a week) and/or resistance training...
January 6, 2018: Steroids
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