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Hydrogen sulphide

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https://www.readbyqxmd.com/read/29660911/the-effects-of-different-remote-ischemic-conditioning-on-ischemia-induced-failure-of-microvascular-circulation-in-humans
#1
Muzaffer Akkoca, Suzan Emel Usanmaz, Serhat Tokgöz, Cüneyt Köksoy, Emine Demirel-Yilmaz
BACKGROUND: Intermittent ischemia in remote tissues can be applied before ischemic injury, during ischemic injury or at the beginning of reperfusion of an index organ ischemia. The aim of this study was to investigate the effect of Remote Ischemic Conditioning (RIC) of the leg on changes in ischemia-induced the microvascular functions of the arm. MATERIAL AND METHODS: Ischemic microvascular injury was induced by arm ischemia (20 min) and reperfusion in healthy, nonsmoker, male volunteers (ischemia group-ISC, n: 9)...
April 13, 2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29659148/hydrogen-sulphide-increases-pulmonary-veins-and-atrial-arrhythmogenesis-with-activation-of-protein-kinase-c
#2
Chao-Shun Chan, Yung-Kuo Lin, Yu-Hsun Kao, Yao-Chang Chen, Shih-Ann Chen, Yi-Jen Chen
Hydrogen sulphide (H2 S), one of the most common toxic air pollutants, is an important aetiology of atrial fibrillation (AF). Pulmonary veins (PVs) and left atrium (LA) are the most important AF trigger and substrate. We investigated whether H2 S may modulate the arrhythmogenesis of PVs and atria. Conventional microelectrodes and whole-cell patch clamp were performed in rabbit PV, sinoatrial node (SAN) or atrial cardiomyocytes before and after the perfusion of NaHS with or without chelerythrine (a selective PKC inhibitor), rottlerin (a specific PKC δ inhibitor) or KB-R7943 (a NCX inhibitor)...
April 16, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29652048/-should-a-doctor-take-into-consideration-the-influence-of-climatic-factors-deliberations-on-the-occasion-of-the-publication-of-a-new-monograph-the-book-of-essays-of-arid-medicine-by-z-r-zununov-i-h-nurov-and-s-z-zununova
#3
E L Povazhnaya
The authors analyze the monograph of the Uzbek scientists professor Z.R. Zununov, I.H. Nurov, and S.Z. Zununova «Essays of arid medicine» (Tashkent: «KAMALAK-PRESS» publishing house, 2016;540). The book presents the results of the comprehensive bioclimatic assessment of the arid zones of Uzbekistan, their extreme climatic conditions (such as high intensity and solar radiation and the considerable duration of its period, dry air and summer heat, sandstorms (the so-called «Afghans»), and the great variety of the natural health-improving factors including mineral waters, microclimate of the speleotherapeutic cave, the desert dune sand, etc...
April 9, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29575878/solec-spa-worldwide-unique-properties-of-polish-health-resort-in-the-service-of-rural-medicine
#4
Marek L Grabowski, Bożena Kosińska, Józef P Knap
Solec Spa is health resort in south-eastern Poland. Its unique balneorehabilitation significance worldwide is determined by chloride-iodine-sodium water with a high content of hydrogen sulphide. This water, classified as highly mineralized sodium-chloride (seltzer) sulphide, bromide, iodide, boron water, contains naturally approximately 0.9 g/l divalent sulphur compounds, which is the highest concentration noted among the mineral waters of the world. The effectiveness of the Solec waters is proven in: inflammatory and autoimmunological locomotor system diseases, degenerative joint disorders (osteoarthritis), post-traumatic and post-operative orthopedic diseases, skin diseases and allergic disorders...
March 14, 2018: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/29507599/hydrogen-sulphide-exposure-in-waste-water-treatment
#5
Åse Dalseth Austigard, Kristin Svendsen, Kari K Heldal
Background: The aims of this study was to assess exposure to hydrogen sulphide (H2 S) among waste water treatment workers (WWWs), and achieve a better measure of the risks of H2 S exposure than only using the eight-hour average value and the ceiling value because the exposure pattern of H2 S for WWWs is dominated by short-term peaks. Methods: Ninety-three measurements of H2 S from 56 WWWs in three cities and three rural areas were collected. All exposure measurements were carried out from the start of the day until lunch time (sampling time 4-5 h) when most of the practical work was performed...
2018: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/29493112/synergetic-exfoliation-and-lateral-size-engineering-of-mos-2-for-enhanced-photocatalytic-hydrogen-generation
#6
Lisha Yin, Xiao Hai, Kun Chang, Fumihiko Ichihara, Jinhua Ye
Generally, exfoliation is an efficient strategy to create more edge site so as to expose more active sites on molybdenum disulphide (MoS2 ). However, the lateral sizes of the resultant MoS2 monolayers are relatively large (≈50-500 nm), which retain great potential to release more active sites. To further enhance the catalytic performance of MoS2 , a facile cascade centrifugation-assisted liquid phase exfoliation method is introduced here to fabricate monolayer enriched MoS2 nanosheets with nanoscale lateral sizes...
March 1, 2018: Small
https://www.readbyqxmd.com/read/29472034/contrasting-impacts-of-light-reduction-on-sediment-biogeochemistry-in-deep-and-shallow-water-tropical-seagrass-assemblages-green-island-great-barrier-reef
#7
Verena Schrameyer, Paul H York, Kathryn Chartrand, Peter J Ralph, Michael Kühl, Kasper Elgetti Brodersen, Michael A Rasheed
Seagrass meadows increasingly face reduced light availability as a consequence of coastal development, eutrophication, and climate-driven increases in rainfall leading to turbidity plumes. We examined the impact of reduced light on above-ground seagrass biomass and sediment biogeochemistry in tropical shallow- (∼2 m) and deep-water (∼17 m) seagrass meadows (Green Island, Australia). Artificial shading (transmitting ∼10-25% of incident solar irradiance) was applied to the shallow- and deep-water sites for up to two weeks...
February 12, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29449198/a-rare-colonization-in-the-peritonitis-following-blunt-abdominal-trauma
#8
Oana Bulat, Cristian Bulat, Mihaela Blaj, Ioana Lupusoru, Viorel Scripcariu
BACKGROUND: Schewanella spp. is Gram-negative bacteria, saprophytes and rarely pathogenic. Initially isolated in 193, these belong to the marine environment; Schewanella (Pseudomonas) putrefaciens was found in water, soil and animal sources and produces hydrogen sulphide. Saccharomyces cerevisiae is the well-known yeast used for fermentation in industry and in molecular biology for research. In humans, it is a very rare pathogen which colonises the digestive tract and its utility has been linked to the treatment and prevention of diarrhoea associated with Clostridium difficile...
February 15, 2018: Balkan Medical Journal
https://www.readbyqxmd.com/read/29424713/do-natural-spring-waters-in-australia-and-new-zealand-affect-health-a-systematic-review
#9
Jessica Stanhope, Philip Weinstein, Angus Cook
Therapeutic use of spring waters has a recorded history dating back to at least 1550 BC and includes both bathing in and drinking such waters for their healing properties. In Australia and New Zealand the use of therapeutic spring waters is a much more recent phenomenon, becoming a source of health tourism from the late 1800s. We conducted a systematic review aimed at determining the potential health outcomes relating to exposure to Australian or New Zealand natural spring water. We found only low-level evidence of adverse health outcomes relating to this spring water exposure, including fatalities from hydrogen sulphide poisoning, drowning and primary amoebic meningoencephalitis...
February 2018: Journal of Water and Health
https://www.readbyqxmd.com/read/29389632/evaluation-of-spoilage-potential-and-volatile-metabolites-production-by-shewanella-baltica-isolated-from-modified-atmosphere-packaged-live-mussels
#10
Olumide A Odeyemi, Christopher M Burke, Christopher J S Bolch, Roger Stanley
Under the current commercial practice, live mussels only have 10days' shelf-life. Observed spoilage indices reduce consumers' acceptance, palatability and shelf-life of modified atmosphere packaged (MAP) live mussels. The aims of this study are to isolate specific spoilage bacteria from modified atmosphere packaged live mussels, evaluate isolates for microbial spoilage indices using qualitative methods and volatile metabolites production. Forty-six hydrogen sulphide producing bacteria were isolated and evaluated for trimethylamine n-oxide (TMAO) reduction, proteolytic and lipolytic activities and hydrogen sulphide production...
January 2018: Food Research International
https://www.readbyqxmd.com/read/29376972/-the-peculiar-hydrogeochemical-features-of-the-hydrosphere-in-the-regions-of-salt-dome-tectonics-as-exemplified-by-the-giant-salt-domes-of-the-peri-caspian-lowland-megabasin
#11
N G Myazina
The Peri-Caspian Lowland megabasin is a vast region of ancient salt accumulation that occurred during the Permian period. The territory over which the salt domes were formed gave rise to and accumulated huge resources of subterranean brackish and salted waters within the hypergenesis zone that also included brine and mineral mud lakes containing chemical elements of great therapeutic value. Nowadays, the subterranean waters (leaches, pools, and springs) provide the sources of the mineral-rich materials of balneological significance, such as sulfide, bromine, and boron-containing mineral waters the ion and mineral composition of which together with the high degree of mineralization makes them highly valuable for medicinal applications...
December 5, 2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29359994/the-regulation-of-host-cellular-and-gut-microbial-metabolism-in-the-development-and-prevention-of-colorectal-cancer
#12
Cheng-Bei Zhou, Jing-Yuan Fang
Metabolism regulation is crucial in colorectal cancer (CRC) and has emerged as a remarkable field currently. The cellular metabolism of glucose, amino acids and lipids in CRC are all reprogrammed. Each of them changes tumour microenvironment, modulates bacterial composition and activity, and eventually promotes CRC development. Metabolites such as short chain fatty acids, secondary bile acids, N-nitroso compounds, hydrogen sulphide, polyphenols and toxins like fragilysin, FadA, cytolethal distending toxin and colibactin play a dual role in CRC...
January 23, 2018: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/29294524/-the-correlation-between-ct-score-of-lung-injury-and-oxygenation-index-in-patients-with-acute-hydrogen-sulphide-poisoning
#13
Z H Yang, Y M Xu, X Y Jiang, J J Lin, D S Wang, Y L Chen, H L Zhao
Objective: To explore correlation between chest CT score and oxygenation index in patients with acute hydrogen sulphide poisoning, whether CT score can be applied to assess acute lung injury after acute hydrogen sulfide poisoning and provide basis and reference. Methods: The clinic and a series of CT datas of 32 acute hydrogen sulphide poisoning cases were retrospectively analysed and compared, According to GBZ31-2002 (the diagnostic standard of occupational H(2)S acute poisoning) , these patients were divided into 2 grouds including moderate groud and severe groud; The CT score were improved, referenceing the scoring criteria of the chest X-ray; The difference of the CT score and the oxygenation index were analyzed between moderate and severe group in the acute phase and the disperse phase; The correlation between CT score and oxygenation index were analyzed...
September 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29287688/anti-inflammatory-effect-of-atb-352-a-h2s-releasing-ketoprofen-derivative-on-lipopolysaccharide-induced-periodontitis-in-rats
#14
Enrico Gugliandolo, Roberta Fusco, Ramona D'Amico, Angela Militi, Giacomo Oteri, John L Wallace, Rosanna Di Paola, Salvatore Cuzzocrea
Periodontal disease is the most common cause of tooth loss in humans, is an inflammatory disease initiated by oral microbial biofilm. Given the involvement of the inflammatory pathway in this type of pathology, the main pharmacological strategy for the treatment of periodontitis, is the inhibition of the inflammatory process in order to prevent tissue destruction and bone resorption, a condition associated with a painful state. To do this, the best class of drugs are Non-steroidal anti-inflammatory drugs (NSAIDs), however, the presence of side effects, especially at the gastrointestinal tract, limits their use for long-term therapy...
December 26, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29273369/carbon-monoxide-and-hydrogen-sulphide-reduce-reperfusion-injury-in-abdominal-compartment-syndrome
#15
Patrick B Murphy, Aurelia Bihari, Neil G Parry, Ian Ball, Ken Leslie, Kelly Vogt, Abdel-Rahman Lawendy
BACKGROUND: Carbon monoxide (CO)- and hydrogen sulphide-releasing molecules (CORM-3 and GYY4137, respectively) have been shown to be potent antioxidant and antiinflammatory agents at the tissue and systemic level. We hypothesized that both CORM-3 and GYY4137 would reduce the significant organ dysfunction associated with abdominal compartment syndrome (ACS). MATERIAL AND METHODS: Randomized trial was conducted where ACS was maintained for 2 hours in 27 rats using an abdominal plaster cast and intraperitoneal CO2 insufflation at 20 mmHg...
February 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29249032/cistus-monspeliensis-l-as-a-potential-species-for-rehabilitation-of-soils-with-multielemental-contamination-under-mediterranean-conditions
#16
Daniel Arenas-Lago, Erika S Santos, Luisa C Carvalho, Maria Manuela Abreu, Maria Luisa Andrade
The Iberian Pyrite Belt (IPB; SW of the Iberian Peninsula) is one of the most important volcanogenic massive sulphide ore deposits in the world. Cistus monspeliensis L. is a native woody shrub that grows spontaneously in non-contaminated soils as well as in soils with multielemental contamination from the IPB. In this study, different ecophysiological parameters of C. monspeliensis growing in soils with different levels of metal(loid)s were evaluated to assess the potential of this species for revegetation of degraded areas...
March 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29241327/a-spectral-shift-based-electrochemiluminescence-sensor-for-hydrogen-sulfide
#17
Cheng Ma, Wanwan Wu, Yujiao Peng, Min-Xuan Wang, Gang Chen, Zixuan Chen, Jun-Jie Zhu
Classic electrochemiluminescence (ECL) assays relying on the change in luminescence intensity face a challenge in the quantitative analysis of complex samples. Here, we report the design and implementation of a new sensing strategy, using the maximum luminescence wavelength (λmax ) shift as the readout to achieve quantitative detection. This approach includes an ECL luminophore (RuSiO2 @GO) and a H2 S-sensitive inner filter absorber (CouMC). The absorbance of CouMC illustrates a dependence on the H2 S concentration, which induces a change in the maximum luminescence wavelength (Δλmax ) of the ECL luminophore...
January 16, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29229321/the-role-of-aspirin-heparin-and-other-interventions-in-the-prevention-and-treatment-of-fetal-growth-restriction
#18
REVIEW
Katie M Groom, Anna L David
Fetal growth restriction and related placental pathologies such as preeclampsia, stillbirth, and placental abruption are believed to arise in early pregnancy when inadequate remodeling of the maternal spiral arteries leads to persistent high-resistance and low-flow uteroplacental circulation. The consequent placental ischaemia, reperfusion injury, and oxidative stress are associated with an imbalance in angiogenic/antiangiogenic factors. Many interventions have centered on the prevention and/or treatment of preeclampsia with results pertaining to fetal growth restriction and small-for-gestational-age pregnancy often included as secondary outcomes because of the common pathophysiology...
February 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29220807/characterization-of-leaf-waste-based-biochar-for-cost-effective-hydrogen-sulphide-removal-from-biogas
#19
Shivali Sahota, Virendra Kumar Vijay, P M V Subbarao, Ram Chandra, Pooja Ghosh, Goldy Shah, Rimika Kapoor, Vandit Vijay, Vaibhav Koutu, Indu Shekhar Thakur
Installation of decentralized units for biogas production along with indigenous upgradation systems can be an effective approach to meet growing energy demands of the rural population. Therefore, readily available leaf waste was used to prepare biochar at different temperatures and employed for H2 S removal from biogas produced via anaerobic digestion plant. It is found that biochar prepared via carbonization of leaf waste at 400 °C effectively removes 84.2% H2 S (from 1254 ppm to 201 ppm) from raw biogas for 25 min in a continuous adsorption tower...
November 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29207994/the-functional-and-molecular-studies-on-involvement-of-hydrogen-sulphide-in-myometrial-activity-of-non-pregnant-buffaloes-bubalus-bubalis
#20
Sooraj V Nair, Vipin Sharma, Abhishek Sharma, Udayraj P Nakade, Pooja Jaitley, Karikalan Mathesh, Soumen Choudhury, Satish Kumar Garg
BACKGROUND: Hydrogen sulphide (H2 S), a member of the gasotransmitters family, is known to play patho-physiological role in different body systems including during pregnancy. But its involvement in myometrial spontaneity and associated signalling pathways in uterus in non-pregnant animals is yet to be studied. Present study describes the effect of L-cysteine, an endogenous H2 S donor, on isolated myometrial strips of non-pregnant buffaloes and the underlying signaling mechanism(s). RESULTS: L-cysteine (10 nM-30 mM) produced concentration-dependent contractile effect on buffalo myometrium which was extracellular Ca2+ and L-type calcium channels-dependent...
December 6, 2017: BMC Veterinary Research
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