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https://www.readbyqxmd.com/read/28548283/novel-selective-phosphodiesterase-type-1-inhibitors-cause-vasodilatation-and-lower-blood-pressure-in-rats
#1
Morten Laursen, Lilliana Beck, Jan Kehler, Claus Tornby Christoffersen, Christoffer Bundgaard, Susie Mogensen, Tomas Mow, Estefano Pinilla, Jakob Schöllhammer Knudsen, Elise Røge Hedegaard, Morten Grunnet, Ulf Simonsen
BACKGROUND AND PURPOSE: Phosphodiesterase enzymes (PDE1-11) break down cyclic nucleotides and are important in the regulation of the cardiovascular system. The purpose of the present study was to investigate the effect on the cardiovascular system of two novel selective PDE1 inhibitors, Lu AF41228 and Lu AF58027. EXPERIMENTAL APPROACH: We used rat mesenteric small arteries (internal diameters of 200-300 µm), RT-PCR and measurement of isometric wall tension. The effect of Lu AF41228 and Lu AF58027 on heart rate and blood pressure was assessed in both anesthetized and conscious male rats...
May 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28544687/effects-of-quadriceps-functional-exercise-with-isometric-contraction-in-the-treatment-of-knee-osteoarthritis
#2
Lanfeng Huang, Bin Guo, Feixiang Xu, Jinsong Zhao
OBJECTIVE: This study aims to investigate the effects of a quadriceps isometric contraction exercise method in the treatment of knee osteoarthritis (OA). METHODS: A total of 250 patients with a confirmed diagnosis of knee OA were enrolled. The patients were randomly divided into an exercise treatment test group (128 patients) and a traditional treatment control group (122 patients). Quadriceps isometric contraction exercise was used in the test group, and local physiotherapy and oral nonsteroidal anti-inflammatory drugs were used in the control group...
May 25, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28543684/multiparity-modifies-contractile-properties-of-pelvic-muscles-affecting-the-genesis-of-vaginal-pressure-in-rabbits
#3
Rhode López-Juárez, René Zempoalteca, Dora Luz Corona-Quintanilla, Ismael Jiménez-Estrada, Francisco Castelán, Margarita Martínez-Gómez
AIMS: To characterize the contractile properties of the bulbospongiosus (Bsm), isquiocavernosus (Ism), and pubococcygeus muscles (Pcm), and their involvement in the genesis of vaginal pressure in nulliparous and multiparous rabbits. METHODS: Age-matched nulliparous and multiparous rabbits were used to record the isometric contractile responses of each muscle as well as the intravaginal pressure evoked by single square electrical pulses and stimulation trains of ascending frequency...
May 24, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28542868/initial-placement-and-secondary-displacement-of-a-new-suture-method-catheter-for-sciatic-nerve-block-in-healthy-volunteers-a-randomised-double-blind-pilot-study
#4
T S Lyngeraa, C Rothe, C Steen-Hansen, M H Madsen, C B Christiansen, A M Andreasen, L H Lundstrøm, K H W Lange
We performed a randomised double-blind pilot study in 16 healthy volunteers to investigate the success rate for placing a new suture-method catheter for sciatic nerve block. A catheter was inserted into both legs of volunteers and each was randomly allocated to receive 15 ml lidocaine 2% through the catheter in one leg and 15 ml saline in the other leg. Successful placement of the catheter was defined as a 20% decrease in maximum voluntary isometric contraction for dorsiflexion of the ankle. Secondary outcomes were maximum voluntary isometric contraction for plantar flexion at the ankle, surface electromyography and cold sensation...
May 25, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28542276/effect-of-combined-actions-of-hip-adduction-abduction-on-the-force-generation-and-maintenance-of-pelvic-floor-muscles-in-healthy-women
#5
Amanda C Amorim, Licia P Cacciari, Anice C Passaro, Simone R B Silveira, Cesar F Amorim, Jefferson F Loss, Isabel C N Sacco
Pelvic floor muscle (PFM) force and coordination are related to urinary incontinence severity and to sexual satisfaction. Health professionals frequently combine classic PFM exercises with hip adduction/abduction contraction to treat these disorders, but the real benefits of this practice are still unknown. Based on a theoretical anatomy approach whereby the levator ani muscle is inserted into the obturator internus myofascia and in which force generated by hip movements should increase the contraction quality of PFMs, our aim was to investigate the effects of isometric hip adduction and abduction on PFM force generation...
2017: PloS One
https://www.readbyqxmd.com/read/28541902/complex-neuromuscular-changes-post-stroke-revealed-by-clustering-index-analysis-of-surface-electromyogram
#6
Xu Zhang, Zhongqing Wei, Xiaoting Ren, Xiaoping Gao, Xiang Chen, Ping Zhou
The objective of this study was to characterize complex neuromuscular changes induced by a hemisphere stroke through a novel clustering index (CI) analysis of surface electromyogram (EMG). The CI analysis was performed using surface EMG signals collected bilaterally from the thenar muscles of 17 subjects with stroke and 12 age-matched healthy controls during their performance of varying levels of isometric muscle contractions. Compared with the neurologically intact or contralateral muscles, mixed CI patterns were observed in the paretic muscles...
May 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28541739/visualization-of-large-scale-narrative-data-describing-human-error
#7
William J Irwin, Saul D Robinson, Stephen M Belt
Objective Introduced is a visual data exploration technique for compiling, reducing, organizing, visually rendering, and filtering text-based narratives for detailed analysis. Background The analysis of data sets provides an increasingly difficult problem. The method of visual representation is considered an effective tool in many applications. The focus of this study was to determine if a latent semantic analysis-based projection of narrative data into a geographic information systems software program provided a useful tool for reducing and organizing large sums of narrative data for analysis...
June 2017: Human Factors
https://www.readbyqxmd.com/read/28539889/baroreflex-coupling-assessed-by-cross-compression-entropy
#8
Andy Schumann, Steffen Schulz, Andreas Voss, Susann Scharbrodt, Mathias Baumert, Karl-Jürgen Bär
Estimating interactions between physiological systems is an important challenge in modern biomedical research. Here, we explore a new concept for quantifying information common in two time series by cross-compressibility. Cross-compression entropy (CCE) exploits the ZIP data compression algorithm extended to bivariate data analysis. First, time series are transformed into symbol vectors. Symbols of the target time series are coded by the symbols of the source series. Uncoupled and linearly coupled surrogates were derived from cardiovascular recordings of 36 healthy controls obtained during rest to demonstrate suitability of this method for assessing physiological coupling...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28539820/bifidobacterium-pseudocatenulatum-cect-7765-supplementation-restores-altered-vascular-function-in-an-experimental-model-of-obese-mice
#9
María D Mauricio, Eva Serna, María Leonor Fernández-Murga, Jesica Portero, Martín Aldasoro, Soraya L Valles, Yolanda Sanz, José M Vila
Aims.Bifidobacterium pseudocatenulatum CECT 7765 improves metabolic and immunological altered functions in high fat fed mice, however little is known about the effects of potential probiotics on vascular reactivity. The aim of the present study was to investigate the effects of a potential probiotic strain, Bifidobacterium pseudocatenulatum CECT 7765, on vascular response in obese mice. Methods. Aorta samples were obtained from mice, which were divided into three groups: a control group, receiving a standard diet; an obese group, receiving a high-fat diet; and an obese group receiving high-fat diet and a daily dose of B...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28537206/intelligent-internet-based-information-system-optimises-diabetes-mellitus-management-in-communities
#10
Xuejuan Wei, Hao Wu, Shuqi Cui, Caiying Ge, Li Wang, Hongyan Jia, Wannian Liang
OBJECTIVE: To evaluate the effect of an intelligent Internet-based information system upon optimising the management of patients diagnosed with type 2 diabetes mellitus (T2DM). METHODS: In 2015, a T2DM information system was introduced to optimise the management of T2DM patients for 1 year in Fangzhuang community of Beijing, China. A total of 602 T2DM patients who were registered in the health service centre of Fangzhuang community were enrolled based on an isometric sampling technique...
January 1, 2017: HIM Journal
https://www.readbyqxmd.com/read/28536755/taurine-protects-cardiac-contractility-in-killifish-fundulus-heteroclitus-by-enhancing-sarcoplasmic-reticular-ca-2-cycling
#11
Elenor F Henry, Tyson J MacCormack
Intracellular taurine is abundant in many animals and it influences an array of physiological processes, including osmoregulation, metabolism, and cardiac contractility. Taurine is an important osmolyte in teleost hearts, but its role in stress tolerance, cardiac metabolism, and contractility has not been assessed. The goal of this study was to determine if ventricular taurine concentration changes in response to environmental stress and to characterize its influence on contractility. Cardiac taurine concentrations varied in killifish (Fundulus heteroclitus) but were generally maintained following acute environmental challenges...
May 23, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28534100/dose-dependent-differential-effects-of-in-vivo-exposure-of-cadmium-on-myometrial-activity-in-rats-involvement-of-vdcc-and-ca-2-mimicking-pathways
#12
Vivek K Saroj, Udayraj P Nakade, Abhishek Sharma, Soumen Choudhury, Sunil W Hajare, Satish K Garg
Present study was undertaken to study the effect of 28-days exposure of female adult rats to cadmium (Cd) in drinking water @ 3, 10 and 30 parts per million (ppm) on myometrial responsiveness to different spasmogens and unravel the possible mechanism of alterations in myometrial activity. Cadmium and Ca(2+) levels in blood and uterus were measured by atomic absorption spectroscopy while isometric tension in myometrial strips was measured using data acquisition system-based physiograph. Dose-dependent increase in levels of cadmium was observed in both blood and uterus while calcium was increased only in the uterus as compared to those in control...
May 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28533692/changes-in-muscle-strength-after-diet-induced-weight-reduction-in-adult-men-with-obesity-a-prospective-study
#13
Bokun Kim, Takehiko Tsujimoto, Rina So, Xiaoguang Zhao, Sechang Oh, Kiyoji Tanaka
BACKGROUND AND OBJECTIVE: The benefits of weight reduction for musculoskeletal disorders are well understood. Steep declines in muscle mass following considerable weight reduction can decrease muscle strength and, consequently, physical performance. However, only a limited number of studies have examined the changes in muscle mass and strength in the context of interventional weight reduction programs. Thus, we investigated the influence of muscle mass decrease caused by diet-induced weight reduction on muscle strength in obese men...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28532875/neck-pain-and-dysphagia-associated-to-disc-protrusion-and-reduced-functional-stability-a-case-report
#14
Michele Margelli, Carla Vanti, Jorge Hugo Villafañe, Roberto Andreotti
BACKGROUND: Deglutition dysfunction like dysphagia may be associated with cervical symptoms. FINDINGS: A young female complained of pain on the neck and swallowing dysfunction that was reduced by means of isometric contraction of cervical muscles. Magnetic resonance imaging revealed an anterior C5-C6 disc protrusion associated with a lesion of the anterior longitudinal ligament. Barium radiograph showed a small anterior cervical osteophyte at C6 level and dynamic X-ray excluded anatomical instability...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28532478/study-protocol-a-double-blind-randomised-control-trial-of-high-volume-image-guided-injections-in-achilles-and-patellar-tendinopathy-in-a-young-active-population
#15
Robert M Barker-Davies, Alastair Nicol, I McCurdie, James Watson, Polly Baker, Patrick Wheeler, Daniel Fong, Mark Lewis, Alexander N Bennett
BACKGROUND: Chronic tendinopathy is a significant problem particularly in active populations limiting sporting and occupational performance. The prevalence of patellar tendinopathy in some sports is near 50% and the incidence of lower limb tendinopathy is 1.4% p.a. in the UK Military. Management includes isometric, eccentric, heavy slow resistance exercises and extracorporeal shockwave therapy (ESWT). Often these treatments are inadequate yet there is no good evidence for injection therapies and success rates from surgery can be as low as 50%...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28532248/effects-of-drop-sets-with-resistance-training-on-increases-in-muscle-csa-strength-and-endurance-a-pilot-study
#16
Hayao Ozaki, Atsushi Kubota, Toshiharu Natsume, Jeremy P Loenneke, Takashi Abe, Shuichi Machida, Hisashi Naito
To investigate the effects of a single high-load (80% of one repetition maximum [1RM]) set with additional drop sets descending to a low-load (30% 1RM) without recovery intervals on muscle strength, endurance, and size in untrained young men. Nine untrained young men performed dumbbell curls to concentric failure 2-3 days per week for 8 weeks. Each arm was randomly assigned to one of the following three conditions: 3 sets of high-load (HL, 80% 1RM) resistance exercise, 3 sets of low-load [LL, 30% 1RM] resistance exercise, and a single high-load (SDS) set with additional drop sets descending to a low-load...
May 22, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28529487/cardiac-baroreflex-variability-and-resetting-during-sustained-mild-effort
#17
Mair Zamir, Mark B Badrov, T Dylan Olver, J Kevin Shoemaker
This exploratory study assessed the pattern of closed-loop baroreflex resetting using multi-logistic-curve analysis. Operating point gain and ranges of RR-interval (RRI) and systolic blood pressure (SBP) are derived to examine how these relate to sympathetic activation. Sustained low-intensity isometric handgrip exercise, with a period of post-exercise circulatory occlusion (PECO), provided a model to study baroreflex resetting because the progression toward fatigue at constant tension induces a continuous increase in volitional contribution to neuro-cardiovascular control...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28528376/isometric-handgrip-as-an-adjunct-for-blood-pressure-control-a-primer-for-clinicians
#18
REVIEW
Cheri L McGowan, David N Proctor, Ian Swaine, Robert D Brook, Elizabeth A Jackson, Phillip D Levy
Considered a global health crisis by the World Health Organization, hypertension (HTN) is the leading risk factor for death and disability. The majority of treated patients do not attain evidence-based clinical targets, which increases the risk of potentially fatal complications. HTN is the most common chronic condition seen in primary care; thus, implementing therapies that lower and maintain BP to within-target ranges is of tremendous public health importance. Isometric handgrip (IHG) training is a simple intervention endorsed by the American Heart Association as a potential adjuvant BP-lowering treatment...
June 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28528354/comparison-of-the-effectiveness-of-resistance-training-in-women-with-chronic-computer-related-neck-pain-a-randomized-controlled-study
#19
Xiao Li, Caina Lin, Cuicui Liu, Songjian Ke, Qing Wan, Haijie Luo, Zhuxi Huang, Wenjun Xin, Chao Ma, Shaoling Wu
BACKGROUND: Chronic computer-related neck pain is common among office workers. Studies have proposed neck strengthening exercise as a therapy to pain relieving and function improvement. The aim of this study was to compare the efficacy of different loading resistance trainings and we hypothesized that women with work-related neck pain could benefit more from progressive resistance training for pain and function recovery. METHODS: A randomized controlled trial was conducted and subjects characterized by monotonous jobs were recruited...
May 20, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28527424/influence-of-chronic-stretching-on-muscle-performance-systematic-review
#20
D M Medeiros, C S Lima
The aim of the current study was to investigate the influence of chronic stretching on muscle performance (MP) by a systematic review. The search strategy included MEDLINE, PEDro, Cochrane CENTRAL, LILACS, and manual search from inception to June 2016. Randomized and controlled clinical trials, non-randomized, and single group studies that have analyzed the influence of flexibility training (FT) (using any stretching technique) on MP were included. Differently, studies with special populations (children, elderly, and people with any dysfunction/disease), and articles that have used FT protocols shorter than three weeks or 12 sessions were excluded...
May 17, 2017: Human Movement Science
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