Research - Arnica Montana
Effect of the oral administration homeopathic Arnica montana on mitochondrial oxidative stress
Ronaldo Ant^onio de Camargo, Ellen Dias da Costa and Rosana Catisti*
Fundac¸~ao Hermınio Ometto, Uniararas, Av Maximiliano Baruto 500, 13607-339 Araras, SP, Brazil
Objective: To analyze the effect of homeopathic Arnica on mitochondrial oxidative stress induced by Ca2+ plus inorganic phosphate and/or Fe2+-citrate-mediated lipid peroxidation through changes in oxygen consumption rates.
Methods: Mitochondria were isolated by differential centrifugation from the livers of adult male Wistar rats which had been treated with Arnica montana 6cH, 12cH, 30cH or succussed 30% ethanol (control) for 21 days.
Results: In the presence of antimycin-A, electron transport chain inhibitor, as evidenced by antimycin-A insensitive O2 consumption, Arnica inhibited lipid peroxidation of mitochondrial membranes. In oxidative stress conditions, in the presence of Ca2+ and inorganic phosphate, animals receiving Arnica 30cH had a significant decrease in mitochondrial O2 consumption compared to control animals.
Conclusion: When administrated orally, Arnica 30cH protects against hepatic mitochondrial
membrane permeabilization induced by Ca2+ and/or Fe2+-citrate-mediated lipid peroxidation and fragmentation of proteins due to the attack by reactive oxygen species.
Source : Homeopathy (2013) 102, 49e53.
Link to Full Article
Potential of the homeopathic remedy, Arnica Montana 30C, to reduce DNA damage in Escherichia coli exposed to ultraviolet irradiation through up-regulation of nucleotide excision repair genes
1. Sreemanti Das (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
2. Santu Kumar Saha (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
3. Arnab De (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
4. Durba Das (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
5. Anisur Rahman Khuda-Bukhsh (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India
Abstract
OBJECTIVE:
To examine to what degree an ultra-highly diluted homeopathic remedy, Arnica Montana 30C (AM-30C), used in the treatment of shock and injury, can modulate the expression of nucleotide excision repair genes in Escherichia coli exposed to ultraviolet (UV) irradiation.
METHODS:
E. coli were cultured to their log phase in a standard Luria-Bertani medium and then exposed to sublethal doses of UV irradiation at 25 and 50 J/m2 for 22.5 and 45 s, respectively. The UV-exposed bacteria were then supplemented with either AM-30C (drug) or placebo (P-30C). The drug-treated and placebo-treated bacteria were subjected to assay for DNA damage and oxidative stress 90 min after UV exposure. Several protocols like comet assay, gel electrophoresis for DNA ladder and intracellular reactive oxygen species (ROS) generation, and biomarker measurement like superoxide dismutase (SOD), catalase (CAT) and reduced glutathione (GSH) were conducted. The mRNA expressions of the excision repair genes like ultraviolet repair uvrA, B and C genes (or also known as excision repair genes) were estimated by reverse transcription-polymerase chain reaction method.
RESULTS:
The UV-exposed bacteria showed DNA damage and oxidative stress, as revealed by an increase in ROS generation, and a decrease in SOD, CAT and GSH activities. As compared to placebo, the AM-30C-treated bacteria showed less DNA damage and oxidative stress as manifested by a decrease in ROS generation, and an increase in SOD, CAT and GSH activities. AM-30C also up-regulated the expression of repair genes as compared to the control.
CONCLUSION:
AM-30C helped repair the DNA damage through up-regulation of repair genes and also ameliorated the oxidative stress through the reduction of ROS generation and suitable modulation of anti-oxidative stress enzymes.
Source : Journal of Chinese Integrative Medicine
Link to Full Article
Ronaldo Ant^onio de Camargo, Ellen Dias da Costa and Rosana Catisti*
Fundac¸~ao Hermınio Ometto, Uniararas, Av Maximiliano Baruto 500, 13607-339 Araras, SP, Brazil
Objective: To analyze the effect of homeopathic Arnica on mitochondrial oxidative stress induced by Ca2+ plus inorganic phosphate and/or Fe2+-citrate-mediated lipid peroxidation through changes in oxygen consumption rates.
Methods: Mitochondria were isolated by differential centrifugation from the livers of adult male Wistar rats which had been treated with Arnica montana 6cH, 12cH, 30cH or succussed 30% ethanol (control) for 21 days.
Results: In the presence of antimycin-A, electron transport chain inhibitor, as evidenced by antimycin-A insensitive O2 consumption, Arnica inhibited lipid peroxidation of mitochondrial membranes. In oxidative stress conditions, in the presence of Ca2+ and inorganic phosphate, animals receiving Arnica 30cH had a significant decrease in mitochondrial O2 consumption compared to control animals.
Conclusion: When administrated orally, Arnica 30cH protects against hepatic mitochondrial
membrane permeabilization induced by Ca2+ and/or Fe2+-citrate-mediated lipid peroxidation and fragmentation of proteins due to the attack by reactive oxygen species.
Source : Homeopathy (2013) 102, 49e53.
Link to Full Article
Potential of the homeopathic remedy, Arnica Montana 30C, to reduce DNA damage in Escherichia coli exposed to ultraviolet irradiation through up-regulation of nucleotide excision repair genes
1. Sreemanti Das (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
2. Santu Kumar Saha (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
3. Arnab De (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
4. Durba Das (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India )
5. Anisur Rahman Khuda-Bukhsh (Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India
Abstract
OBJECTIVE:
To examine to what degree an ultra-highly diluted homeopathic remedy, Arnica Montana 30C (AM-30C), used in the treatment of shock and injury, can modulate the expression of nucleotide excision repair genes in Escherichia coli exposed to ultraviolet (UV) irradiation.
METHODS:
E. coli were cultured to their log phase in a standard Luria-Bertani medium and then exposed to sublethal doses of UV irradiation at 25 and 50 J/m2 for 22.5 and 45 s, respectively. The UV-exposed bacteria were then supplemented with either AM-30C (drug) or placebo (P-30C). The drug-treated and placebo-treated bacteria were subjected to assay for DNA damage and oxidative stress 90 min after UV exposure. Several protocols like comet assay, gel electrophoresis for DNA ladder and intracellular reactive oxygen species (ROS) generation, and biomarker measurement like superoxide dismutase (SOD), catalase (CAT) and reduced glutathione (GSH) were conducted. The mRNA expressions of the excision repair genes like ultraviolet repair uvrA, B and C genes (or also known as excision repair genes) were estimated by reverse transcription-polymerase chain reaction method.
RESULTS:
The UV-exposed bacteria showed DNA damage and oxidative stress, as revealed by an increase in ROS generation, and a decrease in SOD, CAT and GSH activities. As compared to placebo, the AM-30C-treated bacteria showed less DNA damage and oxidative stress as manifested by a decrease in ROS generation, and an increase in SOD, CAT and GSH activities. AM-30C also up-regulated the expression of repair genes as compared to the control.
CONCLUSION:
AM-30C helped repair the DNA damage through up-regulation of repair genes and also ameliorated the oxidative stress through the reduction of ROS generation and suitable modulation of anti-oxidative stress enzymes.
Source : Journal of Chinese Integrative Medicine
Link to Full Article