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Medical Gas Research

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https://www.readbyqxmd.com/read/28217298/for-the-pursuit-of-oxygen-and-carbon-dioxide-channels-in-mitochondria
#1
EDITORIAL
Shao-Hua Yang, Ran Liu
No abstract text is available yet for this article.
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217297/hyperbaric-oxygen-therapy-and-preconditioning-for-ischemic-and-hemorrhagic-stroke
#2
REVIEW
Sheng-Li Hu, Hua Feng, Guo-Hua Xi
To date, the therapeutic methods for ischemic and hemorrhagic stroke are still limited. The lack of oxygen supply is critical for brain injury following stroke. Hyperbaric oxygen (HBO), an approach through a process in which patients breathe in 100% pure oxygen at over 101 kPa, has been shown to facilitate oxygen delivery and increase oxygen supply. Hence, HBO possesses the potentials to produce beneficial effects on stroke. Actually, accumulated basic and clinical evidences have demonstrated that HBO therapy and preconditioning could induce neuroprotective functions via different mechanisms...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217296/anti-inflammatory-signaling-the-point-of-convergence-for-medical-gases-in-neuroprotection-against-ischemic-stroke
#3
REVIEW
Pei-Ying Li, Xin Wang, R Anne Stetler, Jun Chen, Wei-Feng Yu
Recent studies suggest that a variety of medical gases confer neuroprotective effects against cerebral ischemia, extending function beyond their regular clinical applications. The mechanisms underlying ischemic neuroprotection afforded by medical gases have been intensively studied over the past two decades. A number of signaling pathways have been proposed, among which anti-inflammatory signaling has been proven to be critical. Pursuit of the role for anti-inflammatory signaling may shed new light on the translational application of medical gas-afforded neuroprotection...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217295/anti-oxidative-aspect-of-inhaled-anesthetic-gases-against-acute-brain-injury
#4
REVIEW
Tuo Yang, Yang Sun, Feng Zhang
Acute brain injury is a critical and emergent condition in clinical settings, which needs to be addressed urgently. Commonly acute brain injuries include traumatic brain injury, ischemic and hemorrhagic strokes. Oxidative stress is a key contributor to the subsequent injuries and impedes the reparative process after acute brain injury; therefore, facilitating an anti-oxidative approach is important in the care of those diseases. Readiness to deliver and permeability to blood brain barrier are essential for the use of this purpose...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217294/molecular-hydrogen-a-therapeutic-antioxidant-and-beyond
#5
REVIEW
Lei Huang
Molecular hydrogen (H2) medicine research has flourished since a landmark publication in Nature Medicine that revealed the antioxidant and cytoprotective effects of hydrogen gas in a focal stroke model. Emerging evidence has consistently demonstrated that molecular hydrogen is a promising therapeutic option for a variety of diseases and the underlying comprehensive mechanisms is beyond pure hydroxyl radicals scavenging. The non-toxicity at high concentrations and rapid cellular diffusion features of molecular hydrogen ensure the feasibility and readiness of its clinical translation to human patients...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217293/application-of-hyperbaric-oxygen-in-liver-transplantation
#6
REVIEW
Hu Lv, Cui-Hong Han, Xue-Jun Sun, Wen-Wu Liu
In recent years, hyperbaric oxygen (HBO) has been used in the treatment of a lot of diseases such as decompression sickness, arterial gas embolism, carbon dioxide poisoning, soft tissue infection, refractory osteomyelitis, and problematic wound, but little is known about its application in liver transplantation. Although several studies have been conducted to investigate the protective effects of HBO on liver transplantation and liver preservation, there are still some controversies on this issue, especially its immunomodulatory effect...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217292/oxygen-or-cooling-to-make-a-decision-after-acute-ischemia-stroke
#7
REVIEW
Wen-Cao Liu, Xin-Chun Jin
The presence of a salvageable penumbra, a region of ischemic brain tissue with sufficient energy for short-term survival, has been widely agreed as the premise for thrombolytic therapy with tissue plasminogen activator (tPA), which remains the only United States Food and Drug Administration (FDA) approved treatment for acute ischemia stroke. However, the use of tPA has been profoundly constrained due to its narrow therapeutic time window and the increased risk of potentially deadly hemorrhagic transformation (HT)...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217291/paradigms-and-mechanisms-of-inhalational-anesthetics-mediated-neuroprotection-against-cerebral-ischemic-stroke
#8
REVIEW
Hailian Wang, Peiying Li, Na Xu, Ling Zhu, Mengfei Cai, Weifeng Yu, Yanqin Gao
Cerebral ischemic stroke is a leading cause of serious long-term disability and cognitive dysfunction. The high mortality and disability of cerebral ischemic stroke is urging the health providers, including anesthesiologists and other perioperative professioners, to seek effective protective strategies, which are extremely limited, especially for those perioperative patients. Intriguingly, several commonly used inhalational anesthetics are recently suggested to possess neuroprotective effects against cerebral ischemia...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217290/neuroprotective-effect-of-hyperbaric-oxygen-therapy-in-a-juvenile-rat-model-of-repetitive-mild-traumatic-brain-injury
#9
Lei Huang, Andre Obenaus, Mary Hamer, John H Zhang
Repetitive mild traumatic brain injury (rmTBI) is an important medical concern for adolescent athletes that can lead to long-term disabilities. Multiple mild injuries may exacerbate tissue damage resulting in cumulative brain injury and poor functional recovery. In the present study, we investigated the increased brain vulnerability to rmTBI and the effect of hyperbaric oxygen treatment using a juvenile rat model of rmTBI. Two episodes of mild cortical controlled impact (3 days apart) were induced in juvenile rats...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/28217289/peripheral-surgical-wounding-may-induce-cognitive-impairment-through-interlukin-6-dependent-mechanisms-in-aged-mice
#10
Yuanlin Dong, Zhipeng Xu, Lining Huang, Yiying Zhang, Zhongcong Xie
Post-operative cognitive dysfunction (POCD) is associated with morbidity, mortality and increased cost of medical care. However, the neuropathogenesis and targeted interventions of POCD remain largely to be determined. We have found that the peripheral surgical wounding induces an age-dependent Aβ accumulation, neuroinflammation and cognitive impairment in aged mice. Pro-inflammatory cytokine interlukin-6 (IL-6) has been reported to be associated with cognitive impairment in rodents and humans. However, the role of IL-6 in the neuropathogenesis of POCD is unknown...
October 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867488/successful-treatment-with-hydrogen-rich-water-in-a-case-of-chronic-graft-versus-host-disease
#11
Li-Ren Qian, Jian-Liang Shen
The incidence of chronic graft-versus-host-disease is rising year by year, which has become the leading cause of non-transplantation related death and has become the most difficult complication of allogeneic hematopoietic stem cell transplantation to deal with. Inflammation and fibrosis play dominant roles in the pathogenesis of chronic graft-versus-host-disease. Studies have shown that molecular hydrogen has anti-inflammatory, antioxidant, anti-fibrosis effects. Therefore, we hypothesized that molecular hydrogen may have therapeutic effects on chronic graft-versus-host-disease...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867487/hypoxia-therapy-a-new-hope-for-the-treatment-of-mitochondrial-dysfunctions
#12
Jun-Long Huang, Anatol Manaenko, Zhou-Heng Ye, Xue-Jun Sun, Qin Hu
Mitochondrial dysfunctions are characteristic features of numerous diseases and play a critical role in disease pathogenesis. Despite intensive research in this area, there are no approved therapies that directly target mitochondria. Recently a study by Jain et al. from Massachusetts General Hospital, USA reported the effectiveness of hypoxia for treatment of mitochondrial disease in mice. In this commentary, we summarized the potential mechanisms underlying the therapeutic effects of hypoxia on mitochondrial dysfunction, and clinical limitations of hypoxia as a therapy for human patients...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867486/effects-of-normobaric-versus-hyperbaric-oxygen-on-cell-injury-induced-by-oxygen-and-glucose-deprivation-in-acute-brain-slices
#13
Laurent Chazalviel, Jean-Eric Blatteau, Nicolas Vallée, Jean-Jacques Risso, Stéphane Besnard, Jacques H Abraini
Normobaric oxygen (NBO) and hyperbaric oxygen (HBO) are emerging as a possible co-treatment of acute ischemic stroke. Both have been shown to reduce infarct volume, to improve neurologic outcome, to promote endogenous tissue plasminogen activator-induced thrombolysis and cerebral blood flow, and to improve tissue oxygenation through oxygen diffusion in the ischemic areas, thereby questioning the interest of HBO compared to NBO. In the present study, in order to investigate and compare the oxygen diffusion effects of NBO and HBO on acute ischemic stroke independently of their effects at the vascular level, we used acute brain slices exposed to oxygen and glucose deprivation, an ex vivo model of brain ischemia that allows investigating the acute effects of NBO (partial pressure of oxygen (pO2) = 1 atmospheres absolute (ATA) = 0...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867485/what-s-new-in-medical-gas-research-highlights-for-2015
#14
EDITORIAL
Zhou-Heng Ye, Xue-Jun Sun
No abstract text is available yet for this article.
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867484/the-production-of-high-dose-hydrogen-gas-by-the-ams-h-01-for-treatment-of-disease
#15
EDITORIAL
Richard Camara, Lei Huang, John H Zhang
Hydrogen gas is a new and promising treatment option for a variety of diseases including stroke. Here, we introduce the AMS-H-01, a medically approved machine capable of safely producing ~66% hydrogen gas. Furthermore, we propose the significance of this machine in the future of hydrogen gas research.
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867483/brain-globins-in-physiology-and-pathology
#16
REVIEW
Luo-Kun Xie, Shao-Hua Yang
Globins are globular proteins for either transport or storage of oxygen which are critical for cellular metabolism. Four globins have been identified in rodent and human brains. Among them, neuroglobin, cytoglobin and hemoglobin chains are constitutively expressed in normal brain, while myoglobin is only expressed in some neurological disorders. Studies on the molecular structure, expression and functional features of these brain globins indicated that they may play crucial roles in maintenance of neural cell survival and activity, including neurons and astrocytes...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867482/normobaric-oxygen-treatment-in-acute-ischemic-stroke-a-clinical-perspective
#17
REVIEW
Shu-Hai Shi, Zhi-Feng Qi, Yu-Min Luo, Xun-Ming Ji, Ke Jian Liu
Acute ischemic stroke is a common and serious neurological disease. Oxygen therapy has been shown to increase oxygen supply to ischemic tissues and improve outcomes after cerebral ischemia/reperfusion. Normobaric hyperoxia (NBO), an easily applicable and non-invasive method, shows protective effects on acute ischemic stroke animals and patients in pilot studies. However, many critical scientific questions are still unclear, such as the therapeutic time window of NBO, the long-term effects and the benefits of NBO in large clinic trials...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867481/temporal-variation-in-the-response-of-tumors-to-hyperoxia-with-breathing-carbogen-and-oxygen
#18
Hua-Gang Hou, Nadeem Khan, Gai-Xin Du, Sassan Hodge, Harold M Swartz
The effect of hyperoxygenation with carbogen (95% O2 + 5% CO2) and 100% oxygen inhalation on partial pressure of oxygen (pO2) of radiation-induced fibrosarcoma (RIF-1) tumor was investigated. RIF-1 tumors were innoculated in C3H mice, and aggregates of oximetry probe, lithium phthalocyanine (LiPc), was implanted in each tumor. A baseline tumor pO2 was measured by electron paramagnetic resonance (EPR) oximetry for 20 minutes in anesthetized mice breathing 30% O2 and then the gas was switched to carbogen or 100 % oxygen for 60 minutes...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867480/xenon-protects-left-ventricular-diastolic-function-during-acute-ischemia-less-than-ischemic-preconditioning
#19
Jan-H Baumert, Anna B Roehl, Sandra Funcke, Marc Hein
Anesthetics modify regional left ventricular (LV) dysfunction following ischemia/reperfusion but their effects on global function in this setting are less clear. Aim of this study was to test the hypothesis that xenon would limit global LV dysfunction as caused by acute anterior wall ischemia, comparable to ischemic preconditioning. In an open-chest model under thiopental anesthesia, 30 pigs underwent 60-minute left anterior descending coronary artery occlusion, followed by 120 minutes of reperfusion. A xenon group (constant inhalation from previous to ischemia through end of reperfusion) was compared to control and ischemic preconditioning...
July 2016: Medical Gas Research
https://www.readbyqxmd.com/read/27867479/donor-pretreatment-with-carbon-monoxide-prevents-ischemia-reperfusion-injury-following-heart-transplantation-in-rats
#20
Noritomo Fujisaki, Keisuke Kohama, Takeshi Nishimura, Hayato Yamashita, Michiko Ishikawa, Akihiro Kanematsu, Taihei Yamada, Sungsoo Lee, Tetsuya Yumoto, Kohei Tsukahara, Joji Kotani, Atsunori Nakao
Because inhaled carbon monoxide (CO) provides potent anti-inflammatory and antioxidant effects against ischemia reperfusion injury, we hypothesized that treatment of organ donors with inhaled CO would decrease graft injury after heart transplantation. Hearts were heterotopically transplanted into syngeneic Lewis rats after 8 hours of cold preservation in University of Wisconsin solution. Donor rats were exposed to CO at a concentration of 250 parts per million for 24 hours via a gas-exposure chamber. Severity of myocardial injury was determined by total serum creatine phosphokinase and troponin I levels at three hours after reperfusion...
July 2016: Medical Gas Research
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