The Role of Mast Cells in the Remodeling Effects of Molecular Hydrogen on the Lung Local Tissue Microenvironment under Simulated Pulmonary Hypertension.
Dmitrii Atiakshin, Andrey Kostin, Alexander Alekhnovich, Artem Volodkin, Michael Ignatyuk, Ilya Klabukov, Denis Baranovskii, Igor Buchwalow, Markus Tiemann, Marina Artemieva, Nataliya Medvedeva, Tyler W LeBaron, Mami Noda, Oleg Medvedev · International journal of molecular sciences · 2024
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
In rats, the exposure of H₂ together with monocrotaline (MCT), despite individual differences between animals, tended to decrease the intrapulmonary MC population and the severity of the fibrotic phenotype of the local tissue microenvironment compared to changes in animals exposed to the MCT effect alone. These preclinical findings add evidence supporting molecular hydrogen's therapeutic potential within the outcomes and biological pathways measured in this model.
What the Findings Mean
H2HUBB reviewed how inhaled hydrogen gas affected the outcomes measured in rats. The exposure of H₂ together with monocrotaline (MCT), despite individual differences between animals, tended to decrease the intrapulmonary MC population and the severity of the fibrotic phenotype of the local tissue microenvironment compared to changes in animals exposed to the MCT effect alone.
What the Researchers Studied
The researchers studied rats. The study used a preclinical animal experiment. The comparison condition was control condition or baseline measurements.
What Effects Did Molecular Hydrogen Have?
Source-reported hydrogen concentration: 4% source-reported H₂ gas concentration; Source-reported hydrogen exposure: 4% source-reported H₂ gas concentration; reported treatment duration: 21 days. The exposure of H₂ together with monocrotaline (MCT), despite individual differences between animals, tended to decrease the intrapulmonary MC population and the severity of the fibrotic phenotype of the local tissue microenvironment compared to changes in animals exposed to the MCT effect alone. The authors concluded that this study is the first to investigate the state of the intrapulmonary MC population under conditions of H₂ inhalation, including unique histochemical and immunohistochemical staining protocols, to interpret MC-associated mechanisms of extracellular matrix remodeling. MCs as a target of H₂ is a promising angle for further research, in order to identify the mechanisms responsible for the biological effects of molecular hydrogen in the living body.
Why These Findings Matter
These preclinical findings add evidence supporting molecular hydrogen's therapeutic potential within the outcomes and biological pathways measured in this model.
How Strong Is This Evidence?
This is preclinical animal evidence from a preclinical animal experiment. It is most informative for the disease model, mechanisms, biomarkers, and outcomes directly measured in the study.
Technical Study Details
H2HUBB classifies this publication as animal study with preclinical animal evidence. The research population or model was rats. The study used a preclinical animal experiment. The hydrogen delivery method was inhaled hydrogen gas. The source-reported hydrogen concentration was 4% source-reported H₂ gas concentration. The reported treatment duration was 21 days.
Limitations and Safety
Reported limitations: The limitations of this work are related to the lack of analysis of the interaction of MCs under experimental conditions with other immunocompetent, stromal, and epithelial cells of the lungs, including alveolar type II cells, limiting work on further deciphering the biological effects of H₂.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.