Potential therapeutic targets of hydrogen for remedy of the COVID-19

Coronavirus illness 2019 (COVID-19), attributable to extreme acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to the continuing international pandemic. The pathophysiological technique of COVID-19 is an extreme inflammatory response within the host after the viral an infection.

Study: Molecular Hydrogen: A Promising Adjunctive Strategy for the Treatment of the COVID-19. Image Credit: ker_vii/ ShutterstockExamine: Molecular Hydrogen: A Promising Adjunctive Technique for the Therapy of the COVID-19. Picture Credit score: ker_vii/ Shutterstock

A number of therapies have been examined to alleviate signs of this illness; nevertheless, no particular and efficient remedy exists. Hydrogen remedy has been included in a brand new remedy plan for COVID-19 in China.

A latest article revealed in Frontiers in Medication offered a assessment of a research led by academician Zhong Nanshan, in China, on COVID-19 remedy by inhalation of a blended gasoline composed of hydrogen and oxygen.

This text additionally describes the pathophysiology of COVID-19, summarizes therapeutic results and underlying mechanisms of hydrogen on the vital illness, and analyzes the feasibility and potential therapeutic targets of hydrogen in treating COVID-19.

Mechanisms of COVID-19

In COVID-19, the extreme activation of the immune cells and chronic irritation attributable to the viral an infection generate massive quantities of reactive oxygen species (ROS). After SARS-CoV-2 an infection, its replication is dependent upon the power metabolism of the host cells, whereas the glycolytic pathway of the host cells is considerably enhanced, ensuing within the manufacturing of numerous ROS.

In the midst of COVID-19, the impression of SARS-CoV-2 an infection and ROS produced by the above two pathways result in diffuse alveolar harm. This impedes alveolar gasoline change and causes dyspnea and hypoxemia. Therefore, the lung is extra susceptible to secondary an infection.

Hydrogen remedy

Hydrogen remedy targets each inflammatory storms and ROS. Hydrogen, the bottom density gasoline identified, has the smallest molecular mass and a level of reducibility. Beforehand, hydrogen remedy has been examined in UV radiation-induced squamous cell carcinoma, end-stage colorectal most cancers, parasitic liver illnesses, cerebral ischemia-reperfusion damage, Parkinson’s illness, soft-tissue accidents, insulin resistance, rheumatoid arthritis, tumors, sepsis, and organ damage. Hydrogen remedy has demonstrated efficacy within the remedy of inflammatory harm.

Initially, the hydrogen utilized in medical trials was primarily in a non-gaseous type. Medical research have proven that ingesting hydrogen-rich water (HRW) is secure and well-tolerated; HRW containing 7 ppm H2 might defend the vascular endothelium from ROS.

Different types of hydrogen which have been used are – hydrogen-rich saline injection containing 1 ppm H2, hydrogen-rich tablets, and hydrogen-rich oral capsules.

Not too long ago, medical trials have additionally confirmed the therapeutic results of hydrogen gasoline inhalation. Therapeutic results of inhalation of hydrogen gasoline have been demonstrated in sufferers with acute extreme tracheal stenosis, end-stage colorectal most cancers, acute cerebral infarction, postcardiac arrest syndrome after acute myocardial infarction, and non-small cell lung most cancers. Nonetheless, proof relating a direct impact of hydrogen on viruses is missing.

Presently, COVID-19 hydrogen remedy includes inhalation of a combination of hydrogen and oxygen (66% hydrogen; 33% oxygen) at 6 L/min by means of the nasal cannula by utilizing a Hydrogen/Oxygen Generator. Proof means that H2-O2 inhalation for 7.7 hours, in accordance with the usual of care, considerably improved the severity of COVID-19 inside two days, together with dyspnea scale, chest misery, chest ache, cough scale, and resting oxygen saturation, when in comparison with management group of sufferers who acquired every day customary of care with oxygen remedy.

These advantages are doubtless conferred as a result of decrease inhalation resistance after hydrogen/oxygen combination inhalation. In one other occasion, a multicenter, randomized, double-blinded, parallel-group, managed trial confirmed that inhalation of a hydrogen/oxygen combination might considerably enhance acute exacerbation of persistent obstructive pulmonary illness (COPD) signs, together with – dyspnea, cough, and expectoration, higher than solely oxygen remedy—with acceptable security and tolerability profile.

Potential targets of hydrogen in COVID-19


It has been discovered that inhalation of hydrogen gasoline can scale back the infiltration of the neutrophils in lung tissue and might help in assuaging inflammatory harm to the lung tissue within the illness states.

Proof means that hydrogen gasoline inhalation improved inflammatory cell infiltration-induced lung structural harm and enhanced the survival fee in extreme septic mice modeled with cecal ligation and perforation.

As well as, in a rat mannequin of the hemorrhagic shock and resuscitation, briefly inhaling 2% hydrogen gasoline after hemorrhagic shock and resuscitation minimized the diploma of lung damage by way of decreasing the infiltration of inflammatory cells into the lung tissue.


Hydrogen reduces monocyte adsorption by the endothelial adhesion molecules beneath inflammatory response, thus stopping blood-borne monocytes from passing by means of the vascular endothelium and activating into the macrophages that trigger an extreme inflammatory response. Hydrogen remedy can stabilize the perform of macrophages and forestall harm attributable to extreme activation and phagocytic defects.


Hydrogen reduces airway irritation by decreasing cytokine ranges. Using hydrogen gasoline can scale back the damaging cytokine storm and lung damage attributable to SARS-CoV-2 within the early stage of COVID-19 and stimulate sputum drainage and finally scale back the incidence of extreme illness.

Reactive Oxygen Species

In COVID-19, ROS and inflammatory response could also be co-dependent. Hydrogen might both work by eradicating poisonous ROS immediately or not directly bettering the antioxidant exercise of the physique. Hydrogen remedy renders each anti-inflammatory and antioxidant results and thus might help in stopping illness development in COVID-19.

Adjunctive Remedy

The principle cause for COVID-19-related respiratory issues is that SARS-CoV-2 assaults the pulmonary capillary endothelial cells and triggers an immune response. Hydrogen remedy might inhibit tissue harm by the inflammatory cells in any respect the phases of the inflammatory response.

Regardless of its potential efficacy and security to be used as adjunctive remedy, the mechanism of hydrogen assuaging signs of sufferers with the COVID-19 must be additional clarified

Journal reference:

  • Li, Y., Wang, Z., Lian, N., Wang, Y., et al. (2021) “Molecular Hydrogen: A Promising Adjunctive Technique for Therapy of COVID-19”, Frontiers In Medication, doi: 10.3389/fmed.2021.671215 https://www.frontiersin.org/articles/10.3389/fmed.2021.671215/full

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