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https://www.readbyqxmd.com/read/29161385/are-we-close-to-the-ideal-intravenous-fluid
#1
N MacDonald, R M Pearse
The approach to i.v. fluid therapy for hypovolaemia may significantly influence outcomes for patients who experience a systemic inflammatory response after sepsis, trauma, or major surgery. Currently, there is no single i.v. fluid agent that meets all the criteria for the ideal treatment for hypovolaemia. The physician must choose the best available agent(s) for each patient, and then decide when and how much to administer. Findings from large randomized trials suggest that some colloid-based fluids, particularly starch-based colloids, may be harmful in some situations, but it is unclear whether they should be withdrawn from use completely...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29152797/oxidative-stress-does-not-influence-local-sweat-rate-during-high-intensity-exercise
#2
Robert D Meade, Naoto Fujii, Martin P Poirier, Pierre Boulay, Ronald J Sigal, Glen P Kenny
Nitric oxide (NO)-dependent sweating is diminished during high but not moderate intensity exercise. We evaluated whether this impairment stems from increased oxidative stress during high intensity exercise. On two separate days, 11 young (24 ± 4 years) males cycled in the heat (35°C) at a moderate (500 W; 52 ± 6%VO2peak ) or high (700 W; 71 ± 5%VO2peak ) rate of metabolic heat production. Each session included two 30-min exercise bouts separated by a 20-min recovery. Local sweat rate was monitored at four forearm skin sites continuously perfused via intradermal microdialysis with: (1) lactated Ringer's solution (Control), (2) 10 mm ascorbate (Ascorbate; non-selective antioxidant), (3) 10 mm N(G) -nitro-L -arginine methyl ester (L-NAME; NO synthase inhibitor), or (4) 10 mm Ascorbate + 10 mm L-NAME (Ascorbate + L-NAME)...
November 19, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29139022/effect-of-plasma-activated-lactated-ringer-s-solution-on-pancreatic-cancer-cells-in-vitro-and-in-vivo
#3
Yusuke Sato, Suguru Yamada, Shigeomi Takeda, Norifumi Hattori, Kae Nakamura, Hiromasa Tanaka, Masaaki Mizuno, Masaru Hori, Yasuhiro Kodera
BACKGROUND: The medical applications of nonequilibrium atmospheric pressure plasma in cancer therapy have attracted attention. We previously reported on the antitumor effect of plasma-activated medium. However, this approach requires plasma-activated liquids that are administrable to the human body. In this study, we produced plasma-activated lactated Ringer's solution (PAL) and evaluated its antitumor effect and mechanism. Furthermore, we evaluated the effect of the intraperitoneal administration of PAL using a peritoneal dissemination mouse tumor model...
November 14, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29137091/the-effects-of-hypervolemic-infusion-on-microcirculation-perfusion-of-patients-during-laparoscopic-colorectal-surgery
#4
Yunxin Deng, Qianlin Zhu, Buwei Yu, Minhua Zheng, Jue Jin
The aim of this study is to assess the effects of hypervolemic infusion with different solutions on microcirculation perfusion during laparoscopic colorectal surgery.Thirty-six patients were randomly divided into Ringer lactate solution [RL] group, succinylated gelatin injection [Gel] group, and hypertonic saline hydroxyethyl starch 40 injection [HS] group. Hypervolemic infusion was performed during the induction period of general anesthesia. Arterial blood-gas parameters, noninvasive hemodynamics, gastric tonometry values, and central venous pressure (CVP) were compared at baseline (T1); the end of hypervolemic infusion (T2); 5 min (T3), 15 min (T4), 30 min (T5), and 60 min (T6) during pneumoperitoneum; 5 min (T7), 15 min (T8), and 25 min (T9) after pneumoperitoneum...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29130694/initial-validation-of-brief-measures-of-suicide-risk-factors-common-data-elements-used-by-the-military-suicide-research-consortium
#5
Fallon B Ringer, Kelly A Soberay, Megan L Rogers, Christopher R Hagan, Carol Chu, Matt Schneider, Matthew C Podlogar, Tracy Witte, Jill Holm-Denoma, E Ashby Plant, Peter M Gutierrez, Thomas E Joiner
The Military Suicide Research Consortium (MSRC) developed a 57-item questionnaire assessing suicide risk factors, referred to as the Common Data Elements (CDEs), in order to facilitate data sharing and improve collaboration across independent studies. All studies funded by MSRC are required to include the CDEs in their assessment protocol. The CDEs include shortened measures of the following: current and past suicide risk, lethality and intent of past suicide attempts, hopelessness, thwarted belongingness, anxiety sensitivity, posttraumatic stress disorder symptoms, traumatic brain injury, insomnia, and alcohol abuse...
November 13, 2017: Psychological Assessment
https://www.readbyqxmd.com/read/29129306/studies-of-the-cryopreservation-condition-of-gymnocypris-przewalskii-spermatozoa
#6
Fulei Wei, Luxian Yu, Ruihong Li, Xia Zhang, Xuehan Zhang, Ya Zhang, Yuqing Wang, Hongchao Wang, Jian Liang, Rui Ma, Hongfang Qi, Qiwei Qin, Rongqing Zhang, Shihai Zhu, Changzhong Li
The endemic naked carp (Gymnocypris przewalskii Kessler, 1876) plays an important role in the maintenance of the distinctive ecological system of Lake Qinghai at 3.2km altitude on the Qinghai-Tibet Plateau in China. This study aimed to develop a cryopreservation protocol for Gymnocypris przewalskii spermatozoa. Semen was collected from mature individuals during migration and frozen using the liquid nitrogen vapor method. The influence of different cryoprotectants and three extenders on the post-thaw quality of the sperm was analyzed...
November 7, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29129235/effects-of-intraoperative-nutrients-administration-on-energy-expenditure-during-general-anesthesia
#7
Daizoh Satoh, Noriko Toda, Ichiro Yamamoto
OBJECTIVES: Recent reports have shown that intraoperative infusions of glucose and amino acids exert anticatabolic effects. The appropriate dosages of these amino acids and glucose during general anesthesia remain unknown. METHODS: Patients who underwent esophagectomy for thoracic esophageal cancer were infused with acetated Ringer's solution that contained glucose and amino acids (B1 group [10 patients]: glucose, 3 g/h; amino acids, 1.2 g/h; B2 group [12 patients]: glucose, 4...
January 2018: Nutrition
https://www.readbyqxmd.com/read/29128821/effects-of-organic-and-inorganic-compounds-of-diesel-exhaust-particles-on-the-mucociliary-epithelium-an-experimental-study-on-the-frog-palate-preparation
#8
Sergio Henrique Kiemle Trindade, Robson Seriani, Geraldo Lorenzi-Filho, João Ferreira de Mello Júnior, Luiz Ubirajara Sennes, Paulo Hilário Nascimento Saldiva, Mariângela Macchione
The toxic actions of acute exposition to different diesel exhaust particles (DEPA) fractions on the mucociliary epithelium are not yet fully understood due to different concentrations of organic and inorganic elements. These chemicals elements produce damage to the respiratory epithelium and exacerbate pre-existent diseases. In our study we showed these differences in two experimental studies. Study I (dose-response curve - DRCS): Forty frog-palates were exposed to the following dilutions: frog ringer, intact DEPA diluted in frog-ringer at 3mg/L, 6mg/L and 12mg/L...
November 9, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29117995/the-role-of-mitochondria-derived-reactive-oxygen-species-in-microvascular-dysfunction-in-chronic-kidney-disease
#9
Danielle L Kirkman, Bryce J Muth, Meghan G Ramick, Raymond R Townsend, David G Edwards
Cardiovascular disease is the leading cause of mortality in Chronic Kidney Disease (CKD). Mitochondrial dysfunction secondary to CKD is a potential source of oxidative stress that may impair vascular function. This study sought to determine if mitochondria derived reactive oxygen species contribute to microvascular dysfunction in Stage 3-5 CKD. Cutaneous vasodilation in response to local heating was assessed in 20 CKD patients (60±13 years; eGFR 46±13ml/kg/1.73m2) and eleven matched healthy participants (58±2 years; eGFR>90ml/kg/1...
November 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29111855/neuroprotective-effects-of-inhibitors-of-acid-sensing-ion-channels-asics-in-optic-nerve-crush-model-in-rodents
#10
Dorota L Stankowska, Brett H Mueller, Hidehiro Oku, Tsunehiko Ikeda, Adnan Dibas
PURPOSE: The purpose of the current study was to assess the potential involvement of acid-sensing ion channel 1 (ASIC1) in retinal ganglion cell (RGC) death and investigate the neuroprotective effects of inhibitors of ASICs in promoting RGC survival following optic nerve crush (ONC). RESULTS: ASIC1 protein was significantly increased in optic nerve extracts at day 7 following ONC in rats. Activated calpain-1 increased at 2 and 7 days following ONC as evidenced by increased degradation of α-fodrin, known substrate of calpain...
November 7, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29111726/tddft-study-of-the-optical-excitation-of-nucleic-acid-bases-c60-complexes
#11
Sherif Abdulkader Tawfik, X Y Cui, S P Ringer, C Stampfl
The potential of C60 as a nucleic acid base (NAB) optical sensor is theoretically explored. We investigate the adsorption of four NABs, namely, adenine, cytosine, guanine, and thymine, on C60 in the gas phase. For the optimal NAB@C60 adsorption configurations, obtained using a dispersion-corrected density functional, we calculate the vis-near-ultraviolet optical response using time-dependent density functional theory. While the isolated C60 and NAB molecules do not exhibit visible optical excitation, we find that C60/NAB conjugation gives rise to distinct spectral features in the visible range...
November 15, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29108318/intraoperative-use-of-dexmedetomidine-promotes-postoperative-sleep-and-recovery-following-radical-mastectomy-under-general-anesthesia
#12
Cunxian Shi, Jin Jin, Qiang Pan, Shan Song, Kezhong Li, Jiahai Ma, Tao Li, Zhi Li
Postoperative sleep disturbance and fatigue following radical mastectomy were high risks for prolonged convalescence in patients with breast cancer. The present study was designed to observe the effect of intraoperative use of dexmedetomidine on postoperative sleep, fatigue and recovery following radical mastectomy under general anesthesia. Forty-seven patients were randomized into two groups that were maintained with propofol/remifentanil/Ringer's solution (Control group), or propofol/remifentanil/Dexmedetomidine (DEX group) for surgery under general anesthesia...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29107658/physiological-characterization-and-regulation-of-the-contractile-properties-of-the-mosquito-ventral-diverticulum-crop
#13
Travis L Calkins, Andrew DeLaat, Peter M Piermarini
In adult dipteran insects (flies), the crop is a diverticulum of the esophagus that serves as a food storage organ. The crop pumps stored contents into the alimentary canal for digestion and absorption. The pumping is mediated by peristaltic contractions of the crop musculature. In adult female mosquitoes, the crop (ventral diverticulum) selectively stores sugar solutions (e.g., nectar); proteinaceous blood meals by-pass the crop and are transferred directly to the midgut for digestion. The mechanisms that regulate crop contractions have never been investigated in mosquitoes...
October 28, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29102048/ethyl-pyruvate-reduces-acute-lung-damage-following-trauma-and-hemorrhagic-shock-via-inhibition-of-nf-%C3%AE%C2%BAb-and-hmgb1
#14
Borna Relja, Nils Wagner, Niklas Franz, Scott Dieteren, Katharina Mörs, Julia Schmidt, Ingo Marzi, Mario Perl
OBJECTIVE: After blunt thoracic trauma (TxT) and hemorrhagic shock with resuscitation (H/R) intense local inflammatory response and cell loss frequently impair the pulmonary function. Ethyl pyruvate (EP) has been reported to improve the pathophysiologic derangements in models of acute inflammation. Here, we studied the effects of EP on inflammation and lung damage after TxT+H/R. METHODS: Twenty four female Lewis rats (180-240g) were randomly divided into 3 groups: two groups underwent TxT followed by hemorrhagic shock (35±3mmHg) for 60min and resuscitation with either Ringers-Lactat (RL) alone or RL supplemented with EP (EP, 50mg/kg)...
October 16, 2017: Immunobiology
https://www.readbyqxmd.com/read/29093350/in-vivo-microdialysis-for-dynamic-monitoring-of-the-effectiveness-of-nano-liposomes-as-vehicles-for-topical-psoralen-application
#15
Hongyu Zhang, Kai Zhang, Zhe Li, Jihui Zhao, Yongtai Zhang, Nianping Feng
In this study, the skin permeation of liposomes containing psoralen was investigated by in vivo skin microdialysis. Psoralen-loaded nano-sized liposomes were prepared with a mean size of 117.5 nm and a polydispersity index of 0.21, indicating the uniform dispersion of phosphatidylcholine vesicles in the liposomal solution. Based on in vivo microdialysis experiments, the drug concentration in local deep skin of rat increased rapidly and reached a peak concentration (Cmax) of 319.35±23.72 µg/mL at 180 min, and decreased slowly thereafter...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29082595/cutaneous-reactive-hyperaemia-is-unaltered-by-dietary-nitrate-supplementation-in-healthy-humans
#16
Brett J Wong, Jeremy T Keen, Erica L Levitt
The purpose of this study was to determine whether nitrate supplementation augments cutaneous reactive hyperaemia. Seven participants were tested pre- and postnitrate supplementation (25 ml beetroot juice); participants consumed one shot per day for 3 days. Participants were instrumented with two microdialysis fibres: control (Ringer's solution) and NO synthase inhibition (20 mM L-NAME). Skin blood flow was measured via laser-Doppler flowmetry (LDF). A blood pressure cuff was placed on the experimental arm and inflated to 250 mmHg for 5 mins to occlude arterial inflow...
October 29, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/29075932/effect-of-ringers-acetate-in-different-doses-on-plasma-volume-in-rat-models-of-hypovolemia
#17
Svajunas Statkevicius, Attila Frigyesi, Peter Bentzer
BACKGROUND: Even though crystalloids are the first choice for fluid resuscitation in hemodynamically unstable patients, their potency as plasma volume expanders in hypovolemia of different etiologies is largely unknown. The objective of the study was to investigate dose-response curves of a crystalloid in hypovolemia induced by either sepsis or hemorrhagic shock. RESULTS: Rats were randomized to resuscitation with Ringers acetate at a dose 10, 30, 50, 75, or 100 ml/kg at 4 h after induction of sepsis by cecal ligation and puncture (CLP) or 2...
October 26, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29072480/the-interpersonal-theory-of-suicide-a-systematic-review-and-meta-analysis-of-a-decade-of-cross-national-research
#18
Carol Chu, Jennifer M Buchman-Schmitt, Ian H Stanley, Melanie A Hom, Raymond P Tucker, Christopher R Hagan, Megan L Rogers, Matthew C Podlogar, Bruno Chiurliza, Fallon B Ringer, Matthew S Michaels, Connor H G Patros, Thomas E Joiner
Over the past decade, the interpersonal theory of suicide has contributed to substantial advances in the scientific and clinical understanding of suicide and related conditions. The interpersonal theory of suicide posits that suicidal desire emerges when individuals experience intractable feelings of perceived burdensomeness and thwarted belongingness and near-lethal or lethal suicidal behavior occurs in the presence of suicidal desire and capability for suicide. A growing number of studies have tested these posited pathways in various samples; however, these findings have yet to be evaluated meta-analytically...
October 26, 2017: Psychological Bulletin
https://www.readbyqxmd.com/read/29067694/administration-of-platelet-concentrates-suspended-in-bicarbonated-ringer-s-solution-in-children-who-had-platelet-transfusion-reactions
#19
J Kobayashi, R Yanagisawa, T Ono, Y Tatsuzawa, Y Tokutake, N Kubota, E Hidaka, K Sakashita, S Kojima, S Shimodaira, T Nakamura
BACKGROUND AND OBJECTIVES: Adverse reactions to platelet transfusions are a problem. Children with primary haematological and malignant diseases may experience allergic transfusion reactions (ATRs) to platelet concentrates (PCs), which can be prevented by giving washed PCs. A new platelet additive solution, using bicarbonated Ringer's solution and acid-citrate-dextrose formula A (BRS-A), may be better for platelet washing and storage, but clinical data are scarce. MATERIALS AND METHODS: A retrospective cohort study for consecutive cases was performed between 2013 and 2017...
October 25, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/29066000/platelet-rich-plasma-for-the-therapeutic-management-of-temporomandibular-joint-disorders-a-systematic-review
#20
REVIEW
M Bousnaki, P Koidis
This systematic review aimed to investigate whether intra-articular injections of platelet-rich plasma (PRP) are beneficial for the treatment of degenerative temporomandibular disorders, such as temporomandibular joint osteoarthritis (TMJ-OA) and disc displacement with osteoarthritic lesions, when compared to other treatments, such as injections of hyaluronic acid (HA) or saline. An electronic search of the MEDLINE and Scopus databases was performed using combinations of the terms "temporomandibular" and "platelet rich plasma", to identify studies reported in English and published up until May 2017...
October 20, 2017: International Journal of Oral and Maxillofacial Surgery
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