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About OMICS Group

This study investigates the potential benefits of low-dose oral triiodo-L-thyronine (T3) treatment in rats with post-infarct cardiac dysfunction and remodeling. The results demonstrate improved left ventricular function, reduced myocardial damage, and restoration of gene expression, suggesting a safe therapeutic approach. This research aims to establish a clinically translatable T3 treatment/monitoring protocol for myocardial infarction.

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About OMICS Group

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  1. About OMICS Group OMICS Group is an amalgamation of Open Access publications and worldwide international science conferences and events. Established in the year 2007 with the sole aim of making the information on Sciences and technology ‘Open Access’, OMICS Group publishes 500 online open access scholarly journals in all aspects of Science, Engineering, Management and Technology journals. OMICS Group has been instrumental in taking the knowledge on Science & technology to the doorsteps of ordinary men and women. Research Scholars, Students, Libraries, Educational Institutions, Research centers and the industry are main stakeholders that benefitted greatly from this knowledge dissemination. OMICS Group also organizes 500 International conferences annually across the globe, where knowledge transfer takes place through debates, round table discussions, poster presentations, workshops, symposia and exhibitions.

  2. About OMICS International Conferences OMICS International is a pioneer and leading science event organizer, which publishes around 500 open access journals and conducts over 500 Medical, Clinical, Engineering, Life Sciences, Pharmascientific conferences all over the globe annually with the support of more than 1000 scientific associations and 30,000 editorial board members and 3.5 million followers to its credit. OMICS Group has organized 500 conferences, workshops and national symposiums across the major cities including San Francisco, Las Vegas, San Antonio, Omaha, Orlando, Raleigh, Santa Clara, Chicago, Philadelphia, Baltimore, United Kingdom, Valencia, Dubai, Beijing, Hyderabad, Bengaluru and Mumbai.

  3. Safe therapeutic effects on post-infarct cardiac dysfunction and remodeling following low-dose oral triiodo-L-thyronine in rats Viswanathan Rajagopalan, Ph.D. Dept. of Biomedical Sciences NYIT College of Osteopathic Medicine Old Westbury, NY

  4. Background • A large body of evidence suggests that the alarmingly high incidence of overt hypothyroidism, subclinical hypothyroidism and low Triiodo-L-thyronine (T3) syndrome in cardiac patients has a negative impact on outcomes. • Recent rodent studies show that cardiovascular diseases, including Myocardial Infarction (MI), activate cardiac D3 deiodinase contributing to low tissue T3 and Heart Failure (HF) (reviewed in Gerdes AM. AJP Heart Circ 2015). • We previously showed that 3 days of T3 treatment in rats following MI resulted in increased left ventricular (LV) contractility and decreased myocyte apoptosis (Chen YF et al. J Mol Cell Cardiol 2008). • In addition, a supraphysiologic dose of Thyroxine (T4) improved long-term LV function and myocyte survival(Chen YF et al. J Transl Med 2013). • However, a clinically translatable TH treatment/monitoring protocol for MI demonstrating safe therapeutic benefits has not been clearly established.

  5. Hypothesis A therapeutic T3 treatment/monitoring protocol (e.g. translatable to humans) will achieve safe cardioprotective effects in rats following MI

  6. Methodology • Adult female Sprague–Dawley rats underwent MI by ligation of the left anterior descending coronary artery (n=16-20/group). • Treatment of T3 with a dose of ~6 μg/kg/day in drinking water was begun after MI and continued for 2 months (Mo). • The other group of MI rats and sham controls received vehicle treatment – MI-Veh and Sham-Veh respectively. • Appropriate one-way ANOVA or statistical t-tests were performed, data presented as mean±SE and p<0.05 considered statistically significant.

  7. Morphometrics * p<0.05 vs. Sham ** p<0.01 vs. Sham §§ p<0.01 vs. MI-Veh N= 6-11

  8. Serum TH levels were not significantly altered with T3 treatment

  9. Cardiac MRI – Improved EF following T3 ** p<0.01; *** p<0.001 vs. Sham at respective time-point ## p<0.01 vs. MI-Veh at corresponding time-point N = 6-10 per group

  10. Cardiac MRI – Improved LV Volumes following T3 * p<0.05 ** p<0.01; *** p<0.001 vs. Sham at respective time-point # p<0.05 vs. MI-Veh at corresponding time-point N = 6-10 per group

  11. Representative EKGs with burst/tachy atrial pacing

  12. Oral T3 reduced atrial arrhythmias # p<0.05 vs. MI-Veh; N = 9-13 per group

  13. Oral T3 improved contractility without change in Heart Rate # *

  14. Representative Histology sections MI-Veh MI-T3

  15. Improvement in infarct area with oral T3 p=0.068

  16. Restoration of thyroid gene expression following oral T3 * * * • N=8 per group • *p<0.05 vs. Sham

  17. Restoration of cardiac gene expression following oral T3 # p=0.077 p=0.076 ** * * ** # * ** ** # • N=8 per group; *p<0.05, **p<0.01 vs. Sham; #p<0.05 vs MI+V

  18. Restoration of ion channel gene expression following oral T3 # ** ## * • N=8 per group • *p<0.05, **p<0.01 vs. Sham • #p<0.05, ##p<0.01 vs. MI+V

  19. Restoration of ECM gene expression following oral T3 * * * * * ** p=0.05 * ** # • N=8 per group • *p<0.05, **p<0.01 vs. Sham • #p<0.05 vs. MI+V

  20. Restoration of mitochondrial gene expression following oral T3 p=0.06 # * # ** p=0.078 * p=0.08 # * * * * * N=8 per group; *p<0.05, **p<0.01 vs. Sham; #p<0.05 vs. MI+V

  21. Summary • For the first time, a safe and effective post-MI/HF T3 treatment strategy that dramatically improves LV function, atrial arrhythmogenesis, and tissue remodeling, with restoration of gene expression and no adverse effects has been demonstrated. • This study provides an effective treatment/monitoring protocol for T3 treatment of MI that should be readily translatable to humans.

  22. Acknowledgments • Dr. Martin Gerdes and laboratory, Old Westbury, NY • Dr. Youhua Zhang, NYITCOM, Old Westbury, NY • Dr. Kaie Ojamaa, The Feinstein Institute, Manhasset, NY • Dr. Yuefeng Chen, NYITCOM, Old Westbury, NY • Dr. Alessandro Pingitore, CNR Institute, Italy • Dr. Rheal Towner, OMRF, Oklahoma City, OK • Dr. Eduardo Dedkov, NYITCOM, Old Westbury, NY

  23. Thanks' for your kind attention!!!!!!

  24. Let Us Meet Again We welcome you all to our future conferences of OMICS International Please Visit:http://cardiology.conferenceseries.com http://www.conferenceseries.com/ http://www.conferenceseries.com/clinical-research-conferences.php

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