Medical Gas Research最新文献

{"title":"Medical gases and long-term oxygen therapy: reducing the chronic obstructive pulmonary disease burden in aging populations in Sub-Saharan Africa.","authors":"Matthew Chibunna Igwe, Esther Ugo Alum, Alphonsus Ogbonna Ogbuabor","doi":"10.4103/mgr.MEDGASRES-D-25-00024","DOIUrl":"https://doi.org/10.4103/mgr.MEDGASRES-D-25-00024","url":null,"abstract":"<p><p>Chronic obstructive pulmonary disease (COPD) is a major global health challenge, disproportionately affecting aging populations in low- and middle-income countries, including Sub-Saharan Africa (SSA). With an increasing prevalence driven by indoor air pollution, tobacco use, and occupational hazards, COPD remains underdiagnosed underdiagnosed and undertreated in the region due to inadequate healthcare infrastructure and resource constraints. This review highlights the critical role of medical gases, particularly long-term oxygen therapy (LTOT), in managing COPD, improving quality of life, and reducing mortality in patients with severe hypoxemia. Although LTOT is well-established in high-income countries, its implementation in SSA faces significant barriers, including limited access, cost, and insufficient awareness. This review analyzes COPD management, LTOT benefits, healthcare policies, and aging demographics in SSA, focusing on experimental studies and synthesizing data for coherence. Relevant articles in English published from 2014 to 2025 were retrieved from PubMed, Scopus, and WHO. Through a comprehensive analysis of the epidemiology of COPD in SSA, the challenges of integrating LTOT, and successful case studies from comparable regions, this review identifies key opportunities for addressing these gaps. Recommendations include strengthening healthcare infrastructure, fostering policy frameworks for LTOT integration, leveraging community engagement, and enhancing patient education. By addressing these challenges holistically and fostering regional and global collaborations, SSA can mitigate the growing burden of COPD and improve health outcomes for its aging populations.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"46-52"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Roles of oxygen in the tumorigenesis, progression, and treatment of breast cancer.","authors":"Costel C Darie, Angiolina Hukovic, Veronica D Maynard, Anca-Narcisa Neagu","doi":"10.4103/mgr.MEDGASRES-D-25-00023","DOIUrl":"https://doi.org/10.4103/mgr.MEDGASRES-D-25-00023","url":null,"abstract":"<p><p>Breast cancer is the most commonly diagnosed cancer and the second leading cause of cancer death among women worldwide. Poor prognosis in breast cancer patients is often linked to the presence of intratumoral hypoxic areas caused by abnormal vascularization and insufficient oxygen availability, which results in energetic crisis in cancer cells; metabolic and epigenetic reprogramming; the transcription of genes involved in angiogenesis; cancer cell proliferation; increased motility, aggressiveness and metastasis; the accumulation of mutations; genomic instability; the maintenance of stem cell characteristics; stromal cell recruitment; extracellular matrix remodeling; chronic inflammation; immune evasion; and adaptive responses in the tumoral microbiota. Furthermore, hypoxia is often correlated with resistance to traditional antitumor treatments used alone or in combination, which results in the need to implement novel therapies to overcome or alleviate the negative effects of oxygen deprivation in breast cancer theranostics. In breast cancer modeling research, micro- and nanofabrication-based technologies, including breast cancer-on-chip and breast cancer metastasis-on-chip platforms, are able to recapitulate the metastatic cascade of breast cancer in different controlled oxygen gradients. Mass spectrometry-based proteomics, including mass spectrometry imaging, offers opportunities for detecting, quantifying and understanding the roles of proteins and peptides, protein-protein interaction networks, and posttranslational modifications of proteins involved in hypoxia-associated biopathological processes. In this mini-review, we have summarized several modern approaches that are able to overcome the undesirable effects of hypoxia for breast cancer treatment. Thus, natural compounds with inhibitory effects on hypoxia-related signaling pathways in breast cancer cells and the tumor microenvironment, hyperbaric oxygen therapy, viral vector-based therapy that uses genetically engineered oncolytic viruses, and oncological bacteriotherapy based on biohybrid platforms, including anaerobic bacteria that are able to colonize inaccessible hypoxic regions in breast tumors to deliver chemotherapeutic drugs just into the tumor site, and smart nanoplatforms for abundant O2 generation within hypoxic breast cancer areas, including erythrocyte-like nanoparticles, metal-organic framework-nanoparticles, or engineered microalgae-metal-organic framework oxygenators, have been designed to relieve tumor hypoxia, induce antitumor responses, and improve the effects of traditional anti-breast cancer therapies.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"41-45"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A retrospective comparison of hyperbaric oxygen and core decompression for mild to moderate avascular necrosis of the femoral head.","authors":"Ming Sun, Hairui Liang, Yong Chen, Siyu Duan, Rongda Xu, Zhencun Cai","doi":"10.4103/mgr.MEDGASRES-D-24-00162","DOIUrl":"https://doi.org/10.4103/mgr.MEDGASRES-D-24-00162","url":null,"abstract":"<p><p>JOURNAL/mgres/04.03/01612956-202603000-00001/figure1/v/2025-06-28T140100Z/r/image-tiff Avascular necrosis of the femoral head is a condition resulting from disrupted blood supply, leading to ischemia and bone tissue necrosis. Core decompression (CD) restores the blood supply through pressure relief, whereas hyperbaric oxygen (HBO) enhances tissue oxygenation and promotes bone repair. Their combined use may complement each other in improving blood supply, promoting bone healing, and inhibiting disease progression, thus achieving a better therapeutic effect. To assess and compare the efficacy of HBO and/or CD for treating mild to moderate femoral head avascular necrosis, a retrospective study was conducted on patients diagnosed with Ficat stage II non-traumatic osteonecrosis between January 2017 and January 2022 at the Affiliated Central Hospital of Shenyang Medical University, China. A total of 72 patients were divided into HBO, CD, and combination groups, with 24 patients in each group. After 1 year of follow-up, 90% of patients in the HBO group, 85% in the CD group, and 95% in the combination group showed satisfactory improvements in hip joint function. The SF-36 quality of life questionnaire scale scores also significantly improved in all three groups, with the combination group showing the most significant improvement. These findings suggest that HBO offers promising potential for treating non-traumatic femoral head necrosis, with efficacy similar to that of CD. The combination group showed the most significant improvement in both hip joint function and quality of life.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"1-5"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gas mixture in noninvasive ventilation.","authors":"Mostafa Elshazly, Garuti Giancario, Benan Bayrakci, Jose Luis Sandoval, Hebatallah Hesham Ahmed, Antonio M Esquinas","doi":"10.4103/mgr.MEDGASRES-D-24-00129","DOIUrl":"https://doi.org/10.4103/mgr.MEDGASRES-D-24-00129","url":null,"abstract":"<p><p>Noninvasive ventilation (NIV) and high-flow nasal cannula are increasingly used to treat acute respiratory failure. Because many of these patients could also benefit from inhaled medications, combining aerosol therapy with NIV or high-flow nasal cannula is a promising approach. Effective drug delivery to the lungs is crucial for successful aerosol therapy during NIV. Prior research has identified several factors that affect aerosol delivery efficiency in NIV patients. Medical gases have a long history of use in managing various respiratory conditions. Among them, oxygen is frequently used for patients with hypoxia (e.g., hypoxemic respiratory failure and in newborns). In addition to deoxygenation, helium oxygen mixture and nitric oxide can also be administered through devices such as masks combined with NIV. This narrative review aims to provide a comprehensive overview on the application of gas mixtures (such as helium oxygen mixtures and nitric oxide) in NIV, focusing on their efficacy, safety, and optimization strategies in different clinical settings.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"59-65"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanisms by which sevoflurane affects cognitive function in aged marmosets and mice: up-regulation of FKBP5 expression in brain microglia.","authors":"Lei Zhang, Jiao Zhu, Zhengjie Miao, Haoli Mao, Hong Jiang","doi":"10.4103/mgr.MEDGASRES-D-24-00155","DOIUrl":"10.4103/mgr.MEDGASRES-D-24-00155","url":null,"abstract":"<p><p>JOURNAL/mgres/04.03/01612956-202603000-00004/figure1/v/2025-06-28T140100Z/r/image-tiff Inhalation anesthetics may trigger the hypothalamic-pituitary-adrenal axis. FK-506 binding protein (FKBP5) is a critical regulator of the hypothalamic-pituitary-adrenal axis and has been implicated in postoperative cognitive dysfunction. However, how inhalation anesthetics affect the expression and function of FKBP5 in the brain is unclear. We employed single-nucleus RNA sequencing to delineate the hippocampal transcriptomic profiles of the brains of aged marmosets and mice after sevoflurane anesthesia. The results of single-nucleus RNA sequencing revealed that long-term exposure (6 hours) to sevoflurane significantly increased FKBP5 expression in the hippocampus of aged marmosets and mice, especially in microglia. Western blot assay also verified the above results. The Barnes maze test showed that, compared with heterozygous control mice, microglia-specific FKBP5 conditional knockout mice exhibited improved neurocognitive function after sevoflurane/surgery. Transcriptome sequencing analysis was performed on the brains of microglia-specific FKBP5 conditional knockout mice and heterozygous mice after sevoflurane/surgery and further revealed that FKBP5 was related mainly to inflammatory signaling pathways. Therefore, these findings indicate that long-term exposure to sevoflurane increases FKBP5 expression in the hippocampus of aged marmosets and mice, which thereby affects inflammatory signaling pathways and leads to postoperative cognitive dysfunction.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":" ","pages":"19-25"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144018678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of pulsed radiofrequency combined with ozone on zoster-associated pain: a systematic review and meta-analysis.","authors":"Xiao-Tong Ding, Jin-Zhao Huang, Qiu-Song Shen, Rui-Yu Wang, Hou-Ming Kan","doi":"10.4103/mgr.MEDGASRES-D-24-00150","DOIUrl":"10.4103/mgr.MEDGASRES-D-24-00150","url":null,"abstract":"<p><p>Pulsed radiofrequency combined with ozone therapy has been a newly proposed treatment method for zoster-associated pain in recent years. To explore the effectiveness of a regimen of pulsed radiofrequency combined with ozone for the treatment of zoster-associated pain. We searched commonly used English databases (the Cochrane Library, PubMed, CINAHL, Embase, and Web of Science) and Chinese databases (the CNKI, WanFang, CBM, and VIP databases) for randomized controlled trials. Two researchers independently screened the literature on the basis of the set conditions and extracted data from the included literature. The meta-analysis was conducted via Review Manager 5.4 software. A meta-analysis was conducted on 18 studies, with a total of 1496 participants (742 in the experimental group and 754 in the control group). The results revealed that the pulsed radiofrequency combined with ozone presented lower unidimensional pain scores (standardized mean difference [SMD] = -1.55, 95% confidence interval [CI] = [-2.04, -1.06]; heterogeneity: P < 0.00001, I2 = 94%; test effect: Z = 6.18, P < 0.00001), a lower pain rating index (mean difference [MD] = -2.65, 95% CI = [-3.86, -1.44]; heterogeneity: P = 0.001, I2 = 85%; test effect: Z = 4.29, P < 0.0001) and presented pain intensity scores (MD = -0.58, 95% CI = [-0.62, -0.54]; heterogeneity: P = 0.61, I2 = 0%; test effect: Z = 27.91, P < 0.00001), a lower Pittsburgh sleep quality index (MD = -1.62, 95% CI = [-2.94, -0.31]; heterogeneity: P < 0.00001, I2 = 93%; test effect: Z = 2.42, P = 0.02), and lower interleukin-6 expression levels (SMD = -1.94, 95% CI = [-2.91, -0.97]; heterogeneity: P < 0.00001, I2 = 93%; test effect: Z = 3.92, P < 0.0001), lower gabapentin consumption (MD = -146.92, 95% CI = [-189.93, -103.91]; heterogeneity: P = 0.23, I2 = 30%; test effect: Z = 6.70, P < 0.00001). Pulsed radiofrequency combined with ozone is an effective treatment for zoster-associated pain that can effectively alleviate patients' pain and improve sleep quality, providing a new treatment option for zoster-associated pain in the future.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"76-81"},"PeriodicalIF":3.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neuroprotection of medical gases: a potential effect on treating cognitive impairments in neurological symptoms of long-COVID.","authors":"Alon Gorenshtein","doi":"10.4103/mgr.MEDGASRES-D-25-00029","DOIUrl":"10.4103/mgr.MEDGASRES-D-25-00029","url":null,"abstract":"","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"16 1","pages":"84-85"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144528828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Progress in the clinical application of heliox.","authors":"Hao Ke","doi":"10.4103/mgr.MEDGASRES-D-25-00026","DOIUrl":"10.4103/mgr.MEDGASRES-D-25-00026","url":null,"abstract":"","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"15 4","pages":"546-547"},"PeriodicalIF":3.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12124710/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144033255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multifaceted role of nitric oxide in vascular dementia.","authors":"Yi Yang, Kangrong Ma, Shun Li, Tianqing Xiong","doi":"10.4103/mgr.MEDGASRES-D-24-00158","DOIUrl":"10.4103/mgr.MEDGASRES-D-24-00158","url":null,"abstract":"<p><p>Vascular dementia is a highly heterogeneous neurodegenerative disorder induced by a variety of factors. Currently, there are no definitive treatments for the cognitive dysfunction associated with vascular dementia. However, early detection and preventive measures have proven effective in reducing the risk of onset and improving patient prognosis. Nitric oxide plays an integral role in various physiological and pathological processes within the central nervous system. In recent years, nitric oxide has been implicated in the regulation of synaptic plasticity and has emerged as a crucial factor in the pathophysiology of vascular dementia. At different stages of vascular dementia, nitric oxide levels and bioavailability undergo dynamic alterations, with a marked reduction in the later stages, which significantly contributes to the cognitive deficits associated with the disease. This review provides a comprehensive review of the emerging role of nitric oxide in the physiological and pathological processes underlying vascular dementia, focusing on its effects on synaptic dysfunction, neuroinflammation, oxidative stress, and blood‒brain barrier integrity. Furthermore, we suggest that targeting the nitric oxide soluble guanylate cyclase-cyclic guanosine monophosphate pathway through specific therapeutic strategies may offer a novel approach for treating vascular dementia, potentially improving both cognitive function and patient prognosis. The review contributes to a better understanding of the multifaceted role of nitric oxide in vascular dementia and to offering insights into future therapeutic interventions.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"15 4","pages":"496-506"},"PeriodicalIF":3.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12124705/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144033252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hyperbaric oxygen therapy for male infertility: a systematic review and meta-analysis on improving sperm quality and fertility outcomes.","authors":"Bang Liu, Jin Wang, Lvjun Liu, Mengmei Lv, Dai Zhou, Min Li","doi":"10.4103/mgr.MEDGASRES-D-24-00153","DOIUrl":"10.4103/mgr.MEDGASRES-D-24-00153","url":null,"abstract":"<p><p>Hyperbaric oxygen therapy has emerged as a potential adjunctive treatment for male infertility, as it targets various sperm abnormalities and improves fertility outcomes. This systematic review and meta-analysis synthesized data from randomized controlled trials to evaluate the efficacy of hyperbaric oxygen therapy in treating male infertility. A comprehensive literature search identified nine eligible studies, which were assessed for quality using the Jadad scale and analyzed for heterogeneity. The meta-analysis revealed significant improvements in sperm survival, density, morphology, normal sperm rates, and motility following hyperbaric oxygen therapy, with an increased clinical pregnancy rate. Subgroup analyses based on infertility etiology and treatment duration further elucidated the heterogeneity of male infertility stemming from the etiology of infertility. Despite the high robustness of the meta-analysis results, the study is limited by the small number of included trials and potential publication bias. In conclusion, when combined with conventional treatments, hyperbaric oxygen therapy significantly enhances sperm parameters and fertility, underscoring its role as an effective adjunctive therapy for male infertility.</p>","PeriodicalId":18559,"journal":{"name":"Medical Gas Research","volume":"15 4","pages":"529-534"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12124701/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144035129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}