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https://www.readbyqxmd.com/read/29353208/natural-products-berberine-and-curcumin-exhibited-better-ameliorative-effects-on-rats-with-non-alcohol-fatty-liver-disease-than-lovastatin
#1
Wu-Wen Feng, Shuang-Yu Kuang, Can Tu, Zhi-Jie Ma, Jing-Yao Pang, Yan-Hui Wang, Qing-Ce Zang, Ta-Si Liu, Yan-Ling Zhao, Xiao-He Xiao, Jia-Bo Wang
Studies have shown that satins and herbal products have potential to treat non-alcohol fatty liver disease (NAFLD) in clinic. However, no study has compared their effects, and their mechanisms remain unresolved. Here, we choose lovastatin and two herbal products including berberine and curcumin to compare their effects in treating NAFLD. NAFLD model was established by high fat food, and rats were administrated with lovastatin, berberine, curcumin, berberine + curcumin at the dosage of 100, 100, 100, 50 + 50 mg/kg bw, respectively...
January 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29353159/trauma-attentional-dysregulation-and-the-development-of-posttraumatic-stress-an-investigation-of-risk-pathways
#2
Judith Schäfer, Ariel Zvielli, Michael Höfler, Hans-Ulrich Wittchen, Amit Bernstein
BACKGROUND: Fundamental questions regarding the nature and function of attentional bias (AB) to threat in the etiology of posttraumatic stress disorder (PTSD) remain unanswered. We tested the temporal interplay between trauma exposure, dysregulated attentional processing of threatening information pre- and post-trauma, and the development of posttraumatic intrusions. METHODS: Response time to trauma-related threat, trauma-unrelated threat, as well as to trauma-related but typically emotionally-neutral stimuli was assessed using the dot probe task before and one week after watching a violent movie scene that served as a trauma analogue...
January 11, 2018: Behaviour Research and Therapy
https://www.readbyqxmd.com/read/29353137/assessment-of-the-cytotoxicity-of-ionic-liquids-on-spodoptera-frugiperda-9-sf-9-cell-lines-via-in-vitro-assays
#3
Shuanggen Wu, Liangbin Zeng, Chaoyun Wang, Yuanru Yang, Wanlai Zhou, Fenfang Li, Zhijian Tan
Cytotoxicity studies are important tools for the assessment of the toxicity of ionic liquids (ILs). In the present study, the cytotoxicity of eleven ILs against Spodoptera frugiperda 9 (Sf-9) cell lines were evaluated via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. The effect on cellular morphology, ultrastructural morphology, and nuclear morphology induced by 1-ethyl-3-methylimidazolium bromide ([C2mim][Br]) was studied via inverted light microscopy observation, acridine orange staining, and transmission electron microscope (TEM) analysis, respectively...
January 17, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29353027/estrogen-receptor-%C3%AE-is-involved-in-tamoxifen-neuroprotective-effects-in-a-traumatic-brain-injury-male-rat-model
#4
Sher-Wei Lim, T T Eric Nyam, Cho-Ya Hu, Chung-Ching Chio, Che-Chuan Wang, Jinn-Rung Kuo
PURPOSE: The aim of the present study is to determine the neuroprotective mechanisms of tamoxifen (TMX) during traumatic brain injury (TBI), especially the effects on estrogen receptor-α (ERα) expression, as well as neuroinflammatory associations. MATERIAL AND METHODS: Anesthetized male Sprague-Dawley rats were divided into four groups: sham-operated controls, sham-operated controls given TMX (1 mg/kg/per day) for 3 days, those given a vehicle solution immediately after TBI, and those given TMX (1 mg/kg/per day) for 3 days...
January 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29353024/outcomes-and-mortality-prediction-model-of-critically-ill-adults-with-acute-respiratory-failure-and-interstitial-lung-disease
#5
Whitney Gannon, David J Lederer, Mauer Biscotti, Azka Javaid, Nina Patel, Daniel Brodie, Matthew Bacchetta, Matthew Baldwin
BACKGROUND: We aimed to examine short- and long-term mortality in a mixed population of interstitial lung disease (ILD) patients with acute respiratory failure, and to identify those at lower versus higher risk of in-hospital death. METHODS: We conducted a single-center retrospective cohort study of 126 consecutive adults with ILD admitted to an intensive care unit (ICU) for respiratory failure at a tertiary care hospital between 2010 and 2014 who did not undergo lung transplantation during their hospitalization...
January 15, 2018: Chest
https://www.readbyqxmd.com/read/29352777/perspective-theory-of-quantum-transport-in-molecular-junctions
#6
Michael Thoss, Ferdinand Evers
Molecular junctions, where single molecules are bound to metal or semiconductor electrodes, represent a unique architecture to investigate molecules in a distinct nonequilibrium situation and, in a broader context, to study basic mechanisms of charge and energy transport in a many-body quantum system at the nanoscale. Experimental studies of molecular junctions have revealed a wealth of interesting transport phenomena, the understanding of which necessitates theoretical modeling. The accurate theoretical description of quantum transport in molecular junctions is challenging because it requires methods that are capable to describe the electronic structure and dynamics of molecules in a condensed phase environment out of equilibrium, in some cases with strong electron-electron and/or electronic-vibrational interaction...
January 21, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29352742/cambogin-suppresses-dextran-sulphate-sodium-induced-colitis-by-enhancing-treg-cell-stability-and-function
#7
Yue Lu, Na-Mi Kim, Yi-Wen Jiang, Hong Zhang, Dan Zheng, Fu-Xiang Zhu, Rui Liang, Bin Li, Hong-Xi Xu
BACKGROUND AND PURPOSE: Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disorder of gastrointestinal tract, and the dysfunction of immune regulation plays a critical role in IBD. Reflecting the limited use of current drugs and therapies for IBD treatment, it is necessary to explore novel drugs or therapies for this disease. We investigated the effect of cambogin in a mouse model of dextran sulphate sodium (DSS)-induced colitis and whether cambogin attenuates inflammation via Treg-cell-mediated immune modulation...
January 20, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352678/e-bike-related-trauma-in-children-and-adults
#8
Itai Gross, Daniel J Weiss, Elior Eliasi, Miklosh Bala, Saar Hashavya
BACKGROUND: Electric bike (e-bike) usage is growing worldwide, and so is the e-bike-related injury rate. OBJECTIVE: This study was undertaken to characterize e-bike-related injuries. METHODS: Data of all e-bike-related injuries presenting to our level I trauma center between 2014 and 2016 were collected and analyzed. Adult and pediatric (<18 years of age) e-bike-related injuries were then analyzed separately and compared. RESULTS: Forty-eight patients suffering from e-bike-related injuries presented to our trauma center between January 1, 2014 and December 31, 2016...
January 15, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29352607/integrated-lung-tissue-mechanics-one-piece-at-a-time-computational-modeling-across-the-scales-of-biology
#9
REVIEW
Kelly S Burrowes, Amin Iravani, Wendy Kang
The lung is a delicately balanced and highly integrated mechanical system. Lung tissue is continuously exposed to the environment via the air we breathe, making it susceptible to damage. As a consequence, respiratory diseases present a huge burden on society and their prevalence continues to rise. Emergent function is produced not only by the sum of the function of its individual components but also by the complex feedback and interactions occurring across the biological scales - from genes to proteins, cells, tissue and whole organ - and back again...
January 12, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29352520/ipragliflozin-improves-mitochondrial-abnormalities-in-renal-tubules-induced-by-a-high-fat-diet
#10
Susumu Takagi, Jinpeng Li, Yuta Takagaki, Munehiro Kitada, Kyoko Nitta, Toshiyuki Takasu, Keizo Kanasaki, Daisuke Koya
OBJECTIVE: Complete mechanisms of reno-protective effects of SGLT2 inhibitors have not been elucidated yet. Mitochondrial biogenesis is regulated by membrane GTPases, such as Opa1 and Mfn2. Here, we investigated whether SGLT2 inhibition in mice fed with a high-fat diet (HFD) improved mitochondrial morphology and restored mitochondrial biogenesis-related molecules. MATERIALS AND METHODS: Mice were fed in control diet or HFD with or without ipragliflozin treatment...
January 20, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29352512/trpv1-antagonists-that-cause-hypothermia-instead-of-hyperthermia-in-rodents-compounds-pharmacological-profiles-in-vivo-targets-thermoeffectors-recruited-and-implications-for-drug-development
#11
Andras Garami, Eszter Pakai, Heath A McDonald, Regina M Reilly, Arthur Gomtsyan, Joshua J Corrigan, Erika Pinter, Dawn X D Zhu, Sonya G Lehto, Narender R Gavva, Philip R Kym, Andrej A Romanovsky
AIM: Thermoregulatory side effects hinder the development of transient receptor potential vanilloid-1 (TRPV1) antagonists as new painkillers. While many antagonists cause hyperthermia, a well-studied effect, some cause hypothermia. The mechanisms of this hypothermia are unknown and were studied herein. METHODS: Two hypothermia-inducing TRPV1 antagonists, the newly synthesized A-1165901 and the known AMG7905, were used in physiological experiments in rats and mice...
January 20, 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29352388/cutaneous-granulomatosis-a-comprehensive-review
#12
REVIEW
Benedetta Terziroli Beretta-Piccoli, Carlo Mainetti, Marie-Astrid Peeters, Emmanuel Laffitte
Cutaneous granulomatosis is a heterogeneous group of diseases, characterized by a skin inflammatory reaction triggered by a wide variety of stimuli, including infections, foreign bodies, malignancy, metabolites, and chemicals. From a pathogenic point of view, they are divided into non-infectious and infectious granulomas. Pathophysiological mechanisms are still poorly understood. Non-infectious granulomatous skin diseases include granuloma annulare, necrobiosis lipoidica, rheumatic nodules, foreign body granulomas, cutaneous sarcoidosis, and interstitial granulomatous dermatitis...
January 19, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29352256/time-management-in-a-co-housed-social-rodent-species-arvicanthis-niloticus
#13
Alexandra Castillo-Ruiz, Premananda Indic, William J Schwartz
Sociality has beneficial effects on fitness, and timing the activities of animals may be critical. Social cues could influence daily rhythmic activities via direct effects on the circadian clock or on processes that bypass it (masking), but these possibilities remain incompletely addressed. We investigated the effects of social cues on the circadian body temperature (Tb) rhythms in pairs of co-housed and isolated grass rats, Arvicanthis niloticus (a social species), in constant darkness (DD). Cohabitation did not induce synchronization of circadian Tb rhythms...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352026/addictive-behaviour-in-experimental-animals-prospects-for-translation
#14
REVIEW
Barry J Everitt, Chiara Giuliano, David Belin
Since the introduction of intravenous drug self-administration methodology over 50 years ago, experimental investigation of addictive behaviour has delivered an enormous body of data on the neural, psychological and molecular mechanisms of drug reward and reinforcement and the neuroadaptations to chronic use. Whether or not these behavioural and molecular studies are viewed as modelling the underpinnings of addiction in humans, the discussion presented here highlights two areas-the impact of drug-associated conditioned stimuli-or drug cues-on drug seeking and relapse, and compulsive cocaine seeking...
March 19, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29351514/the-ace2-angiotensin-1-7-mas-axis-of-the-renin-angiotensin-system-focus-on-angiotensin-1-7
#15
Robson Augusto Souza Santos, Walkyria Oliveira Sampaio, Andreia C Alzamora, Daisy Motta-Santos, Natalia Alenina, Michael Bader, Maria Jose Campagnole-Santos
The renin-angiotensin system (RAS) is a key player in the control of the cardiovascular system and hydroelectrolyte balance, with an influence on organs and functions throughout the body. The classical view of this system saw it as a sequence of many enzymatic steps that culminate in the production of a single biologically active metabolite, the octapeptide angiotensin (ANG) II, by the angiotensin converting enzyme (ACE). The past two decades have revealed new functions for some of the intermediate products, beyond their roles as substrates along the classical route...
January 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29351479/using-2h-water-to-quantify-the-contribution-of-de-novo-palmitate-synthesis-in-plasma-enabling-back-to-back-studies
#16
Stephen F Previs, Kithsiri Herath, Andrea R Nawrocki, Carlos G Rodriguez, Deborah Slipetz, Sheo B Singh, Ling Kang, Gowri Bhat, Thomas P Roddy, Stacey Conarello, Jenna Terebetski, Mark D Erion, David E Kelley
An increased contribution of de novo lipogenesis (DNL) may play a role in cases of dyslipidemia and adipose accretion, this suggests that inhibition of fatty acid synthesis may affect clinical phenotypes. Since it is not clear whether modulation of one step in the lipogenic pathway is more important than another, the use of tracer methods can provide a deeper level of insight regarding the control of metabolic activity. Although [2H]water is generally considered a reliable tracer for quantifying DNL in vivo (it yields a homogenous and quantifiable precursor labeling), the relatively long half-life of body water is thought to limit the ability of performing repeat studies in the same subjects; this can create a bottleneck in the development and evaluation of novel therapeutics for inhibiting DNL...
January 2, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29351473/sympathetically-mediated-cardiac-responses-to-isolated-muscle-metaboreflex-activation-following-exercise-are-modulated-by-body-position-in-humans
#17
André L Teixeira, Mauricio Daher, Mayara Souza, Plinio Santos Ramos, James P Fisher, Lauro C Vianna
Isolated muscle metaboreflex activation with post-handgrip exercise ischemia (PEI) increases sympathetic nerve activity and partially maintains the exercise-induced increase in blood pressure, but a smaller heart rate (HR) response occurs. The cardiopulmonary baroreceptors, mechanically sensitive receptors that respond to changes in central blood volume and pressure, are strongly associated with changes in body position and upon activation elicit reflex sympathoinhibition. Here, we tested the hypothesis that postural changes modulate the sympathetically-mediated cardiac response to PEI in humans...
December 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351426/the-effects-of-heat-and-cold-on-health-with-special-reference-to-finnish-sauna-bathing
#18
Ilkka Heinonen, Jari A Laukkanen
Environmental stress such as extremely warm or cold temperature is often considered a challenge to human health and body homeostasis. However, human body can adapt relatively well to heat and cold environments and recent studies have also elucidated that particularly heat stress might be even highly beneficial for human health. Consequently, the aim of the present brief review is first to discuss general cardiovascular and other responses to acute heat stress, followed by a review of beneficial effects of Finnish sauna bathing on general and cardiovascular health and mortality as well as dementia and Alzheimer's disease risk...
December 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29351422/body-mass-specific-na-k-atpase-activity-in-the-medullary-thick-ascending-limb-implications-for-species-dependent-urine-concentrating-mechanisms
#19
Mun Aw, Tamara M Armstrong, C Michele Nawata, Sarah N Bodine, Jeeeun J Oh, Guojun Wei, Kristen K Evans, Mohammad Shahidullah, Timo Rieg, Thomas L Pannabecker
In general, mammalian whole body mass-specific metabolic rate correlates positively with maximal urine concentration (Umax) irrespective of whether or not the species have adapted to arid or mesic habitat. Accordingly, we hypothesized that the thick ascending limb (TAL) of a rodent with markedly higher whole body mass-specific metabolism than rat exhibits a substantially higher TAL metabolic rate as estimated by Na+, K+-ATPase activity and Na+, K+-ATPase α1 gene and protein expression. The kangaroo rat inner stripe of the outer medulla exhibits significantly higher mean Na+, K+-ATPase activity (~70%) compared to 2 rat strains (Sprague-Dawley and Munich-Wistar), extending prior studies showing rat activity exceeds rabbit...
January 3, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29351163/comparison-of-the-force-velocity-and-power-time-curves-between-the-concentric-only-and-eccentric-concentric-bench-press-exercises
#20
Alejandro Pérez-Castilla, Paul Comfort, John J McMahon, Francisco Luis Pestaña-Melero, Amador García-Ramos
The aim of this study was to compare the temporal and mechanical variables between the concentric-only and eccentric-concentric bench press (BP) variants. Twenty-one men (age: 22.0±4.2 years, body mass: 73.4±7.7 kg, height: 177.2±8.0 cm; one-repetition maximum [1RM]: 1.12±0.12 kg⋅kg) were evaluated during the concentric-only and eccentric-concentric BP variants using 80% 1RM. Temporal (concentric phase duration, propulsive phase duration, and time to reach the maximum values of force, velocity, and power) and mechanical variables (force, velocity, and power), determined using a linear velocity transducer, were compared between both BP variants...
January 17, 2018: Journal of Strength and Conditioning Research
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