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Hydrogen sulphide

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https://www.readbyqxmd.com/read/29449198/a-rare-colonization-in-the-peritonitis-following-blunt-abdominal-trauma
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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...
December 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29241327/a-spectral-shift-based-electrochemiluminescence-sensor-for-hydrogen-sulphide
#10
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. We report here 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 H2S-sensitive inner filter absorber (CouMC). The absorbance of CouMC illustrates a dependence on the H2S concentration, which induces a Δλmax of the ECL luminophore...
December 15, 2017: 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
#11
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...
December 8, 2017: 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
#12
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 H2S 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% H2S (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
#13
Sooraj V Nair, Vipin Sharma, Abhishek Sharma, Udayraj P Nakade, Pooja Jaitley, Karikalan Mathesh, Soumen Choudhury, Satish Kumar Garg
BACKGROUND: Hydrogen sulphide (H2S), 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 H2S 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
https://www.readbyqxmd.com/read/29161281/the-administration-of-hydrogen-sulphide-prior-to-ischemic-reperfusion-has-neuroprotective-effects-in-an-acute-stroke-model
#14
Chul-Woong Woo, Jae-Im Kwon, Kyung-Won Kim, Jeong-Kon Kim, Sang-Beom Jeon, Seung-Chae Jung, Choong-Gon Choi, Sang-Tae Kim, Jinil Kim, Su Jeong Ham, Woo-Hyun Shim, Yu Sub Sung, Hyun Kwon Ha, Yoonseok Choi, Dong-Cheol Woo
Emerging evidence has suggested that hydrogen sulfide (H2S) may alleviate the cellular damage associated with cerebral ischemia/reperfusion (I/R) injury. In this study, we assessed using 1H-magnetic resonance imaging/magnetic resonance spectroscopy (1H-MRI/MRS) and histologic analysis whether H2S administration prior to reperfusion has neuroprotective effects. We also evaluated for differences in the effects of H2S treatment at 2 time points. 1H-MRI/MRS data were obtained at baseline, and at 3, 9, and 24 h after ischemia from 4 groups: sham, control (I/R injury), sodium hydrosulfide (NaHS)-30 and NaHS-1 (NaHS delivery at 30 and 1 min before reperfusion, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/29158002/sofc-single-cells-fed-by-biogas-experimental-tests-with-trace-contaminants
#15
Davide Papurello, Andrea Lanzini
Biogas from biological treatments and from the waste degradation in landfills generally contains a wide range of trace impurities (e.g., sulphur compounds, siloxanes, halogens, tar compounds, etc.). This paper describes an experimental analysis performed with SOFC single cells fed by a synthetic gas polluted by H2S, HCl, D4 and a mixture of H2S + C2Cl4. The aim is to detect the threshold tolerance limit on different cell performance parameters. Results show how: hydrogen sulphide has a strong impact on the polarization losses due to the nickel sulphide formation on the electrode that causes a mass transfer resistance...
November 17, 2017: Waste Management
https://www.readbyqxmd.com/read/29104732/the-role-of-nrf2-in-cardiovascular-function-and-disease
#16
REVIEW
Sandro Satta, Ayman M Mahmoud, Fiona L Wilkinson, M Yvonne Alexander, Stephen J White
Free radicals, reactive oxygen/nitrogen species (ROS/RNS), hydrogen sulphide, and hydrogen peroxide play an important role in both intracellular and intercellular signaling; however, their production and quenching need to be closely regulated to prevent cellular damage. An imbalance, due to exogenous sources of free radicals and chronic upregulation of endogenous production, contributes to many pathological conditions including cardiovascular disease and also more general processes involved in aging. Nuclear factor erythroid 2-like 2 (NFE2L2; commonly known as Nrf2) is a transcription factor that plays a major role in the dynamic regulation of a network of antioxidant and cytoprotective genes, through binding to and activating expression of promoters containing the antioxidant response element (ARE)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29090613/hypoxic-conditions-in-stormwater-retention-ponds-potential-for-hydrogen-sulfide-emission
#17
Liyu Chen, Robert Delatolla, Patrick M D'Aoust, Ru Wang, Frances Pick, Alexandre Poulain, Colin D Rennie
Improper design and maintenance of stormwater ponds (SWPs) may lead to hypoxic conditions, poor water quality and the production of hydrogen sulfide (H2S). The objective of this study is to develop a comprehensive understanding of hypoxic conditions of SWPs, with a focus on the potential for H2S production and emission. This study was conducted at two retention SWPs in Ottawa, Canada; a problematic pond with the propensity for H2S emission and a reference pond that did not demonstrate H2S emission. The investigation illustrated a significant impact of low dissolved oxygen (DO) concentrations, hypoxic conditions, on the concentration of total sulphides in the water column...
November 1, 2017: Environmental Technology
https://www.readbyqxmd.com/read/29080166/spectrophotometric-quantification-of-reactive-oxygen-nitrogen-and-sulfur-species-in-plant-samples
#18
Chrystalla Antoniou, Andreas Savvides, Egli C Georgiadou, Vasileios Fotopoulos
Reactive oxygen, nitrogen and sulfur species are key signalling molecules involved in multiple physiological processes that can be examined in qualitative and quantitative manners. Here, we describe simple spectrophotometric assays that allow the quantification of hydrogen peroxide, nitrite-derived nitric oxide and hydrogen sulphide from plant tissues.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29077740/convergent-evolution-of-reduced-energy-demands-in-extremophile-fish
#19
Courtney N Passow, Lenin Arias-Rodriguez, Michael Tobler
Convergent evolution in organismal function can arise from nonconvergent changes in traits that contribute to that function. Theory predicts that low resource availability and high maintenance costs in extreme environments select for reductions in organismal energy demands, which could be attained through modifications of body size or metabolic rate. We tested for convergence in energy demands and underlying traits by investigating livebearing fish (genus Poecilia) that have repeatedly colonized toxic, hydrogen sulphide-rich springs...
2017: PloS One
https://www.readbyqxmd.com/read/29055193/specific-bioanalytical-optical-and-photoelectrochemical-assays-for-detection-of-methanol-in-alcoholic-beverages
#20
Javier Barroso, Beatriz Díez-Buitrago, Laura Saa, Marco Möller, Nerea Briz, Valeri Pavlov
Methanol is a poison which is frequently discovered in alcoholic beverages. Innovative methods to detect methanol in alcoholic beverages are being constantly developed. We report for the first time a new strategy for the detection of methanol using fluorescence spectroscopy and photoelectrochemical (PEC) analysis. The analytical system is based on the oxidation of cysteine (CSH) with hydrogen peroxide (H2O2) enzymatically generated by alcohol oxidase (AOx). H2O2 oxidizes capping agent CSH, modulating the growth of CSH-stabilized cadmium sulphide quantum dots (CdS QDs)...
October 13, 2017: Biosensors & Bioelectronics
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