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Literature Review

Molecular hydrogen: A potential radioprotective agent

MHID-3062702PMID: 327638202020Biomedicine & Pharmacotherapy

Qiongge Hu, Yunxiang Zhou, Shijie Wu, Wei Wu, Yongchuan Deng, Anwen Shao

In recent years, many studies have shown that hydrogen has therapeutic and preventive effects on various diseases. Its selective antioxidant properties were well noticed. Most of the ionizing radiation-induced damage is caused by hydroxyl radicals (.OH) from radiolysis of H2O . Since hydrogen can mitigate such damage through multiple mechanisms, it presents noteworthy potential as a novel radio-pro

Animal StudyIn VitroHighlighted

Therapeutic potential of molecular hydrogen in ovarian cancer

MHID-18249022018Translational Cancer Research

Lei Shang, Fei Xie, Jiala Li, Yating Zhang, Mengyu Liu, Pengxiang Zhao, et al.

Background: To investigate the potential effects of molecular hydrogen on ovarian cancer. Methods: The in vivo study was performed using Hs38.T xenografted BALB/c nude mice. The mean tumor volume was monitored during 6 weeks of hydrogen inhalation. Immunohistochemistry (IHC) staining was performed to determine the Ki67 and CD34 expression. The in vitro effects of molecular hydrogen on proliferati

In VitroHighlighted

Hydrogen gas protects IP3Rs by reducing disulfide bridges in human keratinocytes under oxidative stress

MHID-1014265PMID: 286201982017Scientific Reports

Ching-Ying Wu, Wen-Li Hsu, Ming-Hsien Tsai, Jui-Lin Liang, Jian-He Lu, Chia-Jung Yen, et al.

Based on the oxidative stress theory, aging derives from the accumulation of oxidized proteins induced by reactive oxygen species (ROS) in the cytoplasm. Hydrogen peroxide (H2O2) elicits ROS that induces skin aging through oxidation of proteins, forming disulfide bridges with cysteine or methionine sulfhydryl groups. Decreased Ca2+ signaling is observed in aged cells, probably secondary to the for

In Vitro

Molecular hydrogen protects against oxidative stress-induced SH-SY5Y neuroblastoma cell death through the process of mitohormesis

MHID-7973359PMID: 284674972017PLOS ONE

Yayoi Murakami, Masafumi Ito, Ikuroh Ohsawa

Inhalation of molecular hydrogen (H2) gas ameliorates oxidative stress-induced acute injuries in the brain. Consumption of water nearly saturated with H2 also prevents chronic neurodegenerative diseases including Parkinson’s disease in animal and clinical studies. However, the molecular mechanisms underlying the remarkable effect of a small amount of H2 remain unclear. Here, we investigated the ef

Animal StudyIn VitroHighlighted

Hydrogen-rich saline attenuates isoflurane-induced caspase-3 activation and cognitive impairment via inhibition of isoflurane-induced oxidative stress, mitochondrial dysfunction, and reduction in ATP levels

MHID-6714009PMID: 283863422017American Journal of Translational Research

Cheng Li, Lengchen Hou, Dan Chen, Fuqing Lin, Tao Chang, Mengzhu Li, et al.

Objectives: The inhaled general anesthetic isoflurane has been shown to induce caspase-3 activation in vitro and in vivo. The underlying mechanisms and functional consequences of this activity remain unclear. Isoflurane can induce caspase-3 activation by causing accumulation of reactive oxygen species (ROS), mitochondrial dysfunction, and reduction in adenosine triphosphate (ATP) levels. This stud

In VitroChemical/Physicochemical StudyHighlighted

Molecular hydrogen regulates gene expression by modifying the free radical chain reaction-dependent generation of oxidized phospholipid mediators

MHID-6183029PMID: 267392572016Scientific Reports

Katsuya Iuchi, Akemi Imoto, Naomi Kamimura, Kiyomi Nishimaki, Harumi Ichimiya, Takashi Yokota, et al.

We previously showed that H2 acts as a novel antioxidant to protect cells against oxidative stress. Subsequently, numerous studies have indicated the potential applications of H2 in therapeutic and preventive medicine. Moreover, H2 regulates various signal transduction pathways and the expression of many genes. However, the primary targets of H2 in the signal transduction pathways are unknown. Her

In VitroHighlighted

Heme oxygenase-1 mediates the anti-inflammatory effect of molecular hydrogen in LPS-stimulated RAW 264.7 macrophages

MHID-1519950PMID: 241487942013International Journal of Surgery

Hong-Guang Chen, Ke-Liang Xie, Huan-Zhi Han, Wei-Na Wang, Da-Quan Liu, Guo-Lin Wang, et al.

Background: Molecular hydrogen (H2) as a new medical gas has an anti-inflammatory effect. In the present study, we investigated whether heme oxygenase-1 (HO-1) contributes to the anti-inflammatory effect of H2 in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Methods: RAW 264.7 macrophages were stimulated by LPS (1 mg/mL) with presence or absence of different concentrations of H2. Cell

Animal StudyIn VitroHighlighted

Hydrogen-rich saline protects immunocytes from radiation-induced apoptosis

MHID-89507332012Medical Science Monitor

Yanyong Yang, Bailong Li, Cong Liu, Yunhai Chuai, Jixiao Lei, Fu Gao, et al.

Background: Radiation often causes depletion of immunocytes in tissues and blood, which results in immuno suppression. Molecular hydrogen (H2) has been shown in recent studies to have potential as a safe and effective radioprotective agent through scavenging free radicals. This study was designed to test the hypothesis that H2 could protect immunocytes from ionizing radiation (IR). Material/Metho

Human StudyLiterature ReviewAnimal StudyIn VitroHighlighted

The 2011 Medical Molecular Hydrogen Symposium: An inaugural symposium of the journal Medical Gas Research

MHID-1756030PMID: 221460822011Medical Gas Research

Shigeo Ohta, Atsunori Nakao, Kinji Ohno

This report summarizes a brief description/history of the Hydrogen Research Meetings as well as key presentations/oral abstracts delivered in the most recent symposium. Additionally, we introduced 38 diseases and physiological states for which hydrogen exhibits beneficial effects.

In VitroObservational Study

Hydrogen-rich electrolyzed warm water represses wrinkle formation against UVA ray together with type-I collagen production and oxidative-stress diminishment in fibroblasts and cell-injury prevention in keratinocytes

MHID-9621518PMID: 220709002011Journal of Photochemistry and Photobiology B: Biology

Shinya Kato, Yasukazu Saitoh, Keizou Iwai, Nobuhiko Miwa

Hydrogen-rich electrolyzed warm water (HW) was prepared at 41ºC and exhibited dissolved hydrogen (DH) of 1.13 ppm and an oxidation-reduction potential (ORP) of -741 mV in contrast to below 0.01 ppm and +184 mV for regular warm water (RW). Fibroblasts OUMS-36 and keratinocytes HaCaT were used to examine effects of HW against UVA-ray irradiation. Type-I collagen was synthesized 1.85- to 2.03-fold m

Animal StudyIn Vitro

Anti-diabetes effect of water containing hydrogen molecule and Pt nanoparticles

MHID-5661317PMID: 223730562011BMC Proceedings

Sanetaka Shirahata, Takeki Hamasaki, Keisuke Haramaki, Takuro Nakamura, Masumi Abe, Hanxu Yan, et al.

Electrochemically reduced water (ERW) contains a lot of hydrogen molecule (H2) and scavenges reactive oxygen species (ROS) to protect DNA from oxidative damage [1]. ERW also contains small amounts of Pt nanoparticles (NPs) and elongates the lifespan of C. elegans [2]. Pt NPs are newly recognized multi-functional ROS scavengers [3]. ERW exhibits anti-diabetes effects in vitro and in vivo [4-6][7].

In VitroHighlighted

Hydrogen-rich PBS protects cultured human cells from ionizing radiation-induced cellular damage

MHID-98352102010Nuclear Technology & Radiation Protection

Liren Qian, Bailong Li, Fei CAO, Yuecheng Huang, Shulin Liu, Jianming Cai, et al.

Hydroxyl radicals play an important role in ionizing radiation-induced cellular damage, while hydrogen can selectively reduce hydroxyl radicals in vitro. This study was designed to test the hypothesis that hydrogen-rich PBS may be an effective radioprotective agent in vitro. Com pared to cells pretreated with out hydrogen, we demonstrated that treating cells with hydrogen-rich PBS be fore irradiat