Introduction: What they say
A study from the Department of Cardiology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA; and Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts, USA shows that “Trbp regulates heart function through microRNA-mediated Sox6 repression.” This study was published, in the 2 June 2015 issue of the journal “Nature Genetics” (the number 1 research journal in Genetics with an impact factor of 29.648), by Prof. Da-Zhi Wang & Jian Ding, and others
Further, a recent study from the Population Health Research Institute, McMaster University and Hamilton Health Sciences, David Braley Research Bldg., Hamilton General Hospital, 237 Barton St. E., Hamilton, ON L8L 2X2, Canada shows that “Rivaroxaban with or without Aspirin in Stable Cardiovascular Disease.” This study was published, in the 27 August 2017 issue of the journal “N Engl J Med.” (the number 1 journal in “Clinical medicine” with an impact factor of 72.406), by Dr. Eikelboom, Stuart J. Connolly and others.
What we say:
On the foundation of these interesting findings, Dr L Boominathan PhD, Director-cum-chief Scientist of GBMD, reports that: Reproductive hormone protects against cardiac diseases: Relaxin-based therapy for Cardiomyopathy: Relaxin, a protein hormone that facilitates labor and relaxes the uterine musculature, decreases the expression of Sox6, restores the balance between slow- and fast-twitch myofiber proteins and alleviates Cardiomyopathy, via up-regulation of its target gene
From the significance of the study to public health relevance:
Given that: (1) cardiovascular disease is the leading cause of death worldwide; (2) dilated cardiomyopathy is the leading cause of Heart failure; (3) the raise of death rate, due to cardiovascular disease, has increased from 12.3 million in 1990 to 17.3 million in 2013; (4) 13% of cardiovascular disease occur due to uncontrolled high blood pressure; (5) in India, in 2004, 14.6 lakhs deaths (14% of total deaths) were due to ischemic heart disease; (6) 85% of people over 80 years are susceptible to cardiovascular diseases; (7) the global economic cost spent in the treatment of cardiovascular disease in 2011 was little more than 10 billion US dollars; (8) the death due to cardiovascular disease is higher in low-to-middle income countries compared to developed countries; and (9) an alarming number of people, such as 230 lakhs people, will die from cardiovascular diseases each year by 2030, there is an urgent need to find: (i) a cure to diseases, as mentioned above, leading to cardiovascular disease; (ii) a way to induce regeneration of adult cardiomyocytes that were lost in Myocardial patients; (iii) a cheaper alternative to the existing expensive drugs; and (iv) a side-effect-free Natural product-based drug.
What is known?
A number of studies suggest that Cardiomyopathy is the result of altered gene expression of contractile proteins. Trbp, an RNA binding protein, has been shown to be required for normal functioning of heart contractions.
Prof Da-Zhi Wang’s research team has shown earlier that inactivation of Trbp in mice leads to progressive cardiomyopathy and heart failure.
From research findings to Therapeutic opportunity:
This study suggests a reproductive hormone-based therapy for cardiomyopathy. Relaxin, a reproductive hormone that is known to facilitate labor and relax the uterine musculature, has been shown to play a role in cardiac diseases. However, the mechanistic basis of which remains obscure.
Relaxin, by regulating the expression of its target genes, it may: (1) decrease the expression of Sox6; (2) increase the expression of cardiac slow-twitch myofiber proteins; (3) decrease the expression of skeletal fast-twitch myofiber proteins; (4) restore the balance between slow- and fast-twitch myofiber proteins; and (5) alleviate cardiomyopathy (fig. 1).
Thus, pharmacological formulations encompassing “Relaxin inducers or their recombinant versions (Serelaxin), either alone or in combination with other drugs,” may be used to inhibit progressive cardiomyopathy and lethal heart failure (fig.2).
Given the mechanistic basis of how Relaxin may attenuate cardiomyopathy medical practitioners and cardiologists may consider treating cardiac patients with Relaxin or its mimic (Serelaxin(recombinant human relaxin)-brand name: Reasanz).
Details of the research findings:
Idea Proposed/Formulated by Dr L Boominathan Ph.D.
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Undisclosed mechanistic information: How Relaxin inhibits the expression of Sox6.
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To cite: Boominathan, L., Reproductive hormone protects against cardiac diseases: Relaxin-based therapy for Cardiomyopathy: Relaxin, a protein hormone that facilitates labor and relaxes the uterine musculature, decreases the expression of Sox6, restores the balance between slow- and fast-twitch myofiber proteins and alleviates Cardiomyopathy, via up-regulation of its target gene, 23/August/2018, 2.54 pm, Genome-2-BioMedicine Discovery center (GBMD), http://genomediscovery.org
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