About My Health Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Hypertension is Related to Obesity

by Vani Pradeep on December 6, 2014 at 11:59 AM
Font : A-A+

Hypertension is Related to Obesity

Over the years, it has been found that cardiovascular diseases are related to obesity. Obesity does lead to blood pressure and cardiovascular diseases and being overweight is a major risk factor. But, it has not been known how obesity increases the risk of high blood pressure, making it difficult to develop evidence based therapies for obesity, hypertension and heart disease.

Advertisement

In a ground-breaking study, published today in the prestigious journal, 'Cell', researchers from Monash University in Australia, Warwick, Cambridge in the UK and several American Universities have discovered the link between obesity and hypertension. This research has discovered that the hormone leptin which is secreted by fat cells is significantly elevated following weight gain and in obesity, acts in the brain to elevate blood pressure. These studies, involve both animal and human experiments, including a unique cohort of patients lacking the hormone leptin or lacking the leptin receptor. Results demonstrated that both blocking leptin from producing its actions in the brain and removal of the leptin receptors, from the brain were effective and for the reducing obesity induced hypertension. As much as 80% of common hypertension is caused by excess body fat, and this study for the first time describes the mechanism by which obesity elevates blood pressure, and opens up new approaches to treat obesity induced high blood pressure.

The study - led by Professor Michael Cowley, Director of the Monash Obesity & Diabetes Institute within the School of Biomedical Sciences, Monash University, Australia - used a number of new and unique technologies to link leptin in obesity induced hypertension:
  • In genetically engineered mice, only those with normal leptin signalling showed an increase in blood pressure when they became obese. This rodent data was confirmed in human studies, in which obese leptin-deficient and leptin receptor deficient patients had lower systolic blood pressure compared to aged and BMI matched controls
  • Restoring leptin receptors to the brain of obese leptin receptor deficient mice increased their blood pressure
  • Multiple blockage methods of the leptin receptor in the brain, reduced the hypertension of obese mice
  • Acute blockage of the electrical activity of the leptin receptor expressing cells in the brain of obese hypertensive mice, immediately reduced their blood pressure, confirming the role of these neurons in elevating blood pressure in obesity
"This study shows that a hormone secreted by fat (leptin) increases blood pressure, and explains the mechanism of the known link between obesity and high blood pressure."
Advertisement

"Our data suggest that pharmacological approaches based on altering the effect of leptin in the dorsomedial hypothalamic region of the brain, could potentially represent a therapeutic target for the treatment of obesity induced hypertension and potentially could be exploited to alleviate the incidence of obesity induced cardiovascular diseases."

The researchers are now investigating whether blocking the leptin receptor may be a way to reduce the incidence of hypertension and cardiovascular diseases in obesity. The anti-hypertensive drug market is expected to exceed $40 billion annually by 2018.

Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
News Category
What's New on Medindia
Ways to Manage Stress during COVID-19 Pandemic
Can Adjusting Fatty Acid Intake Improve Mood in Bipolar Disorder Patients?
Insulin Resistance Doubles the Risk of Major Depressive Disorder
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Bariatric Surgery High Blood Pressure Obesity Bulimia Nervosa Diet Lifestyle and Heart Disease Diet and High Blood Pressure Stress and the Gender Divide Silent Killer Diseases Liposuction Quiz on Hypertension 

Recommended Reading
Diabetes and Hypertension
Diabetes and hypertension (high blood pressure) are significant health problems worldwide, but like ...
Can Garlic Control High Blood Pressure
Want to know how to lower high blood pressure/hypertension? Garlic is a miracle herb that helps to ....
Benefits of Blood Pressure Tablets on your Health
Hypertension affects about a billion individuals worldwide and is a silent killer. Medication & ......
Pulmonary Arterial Hypertension
It can be a serious condition affecting the heart. It is defined as mean pulmonary arterial ......
Bulimia Nervosa
The term ''Bulimia'' refers to episodes of uncontrolled excessive eating, known as "binges," followe...
Diet and High Blood Pressure
High blood pressure or hypertension is defined as a blood pressure of above 140 mm Hg (systolic) and...
High Blood Pressure
High blood pressure or hypertension is a chronic condition, which usually lasts a lifetime once it i...
Liposuction
Liposuction is a cosmetic procedure, which is used to suck out the excess or abnormal fat deposition...
Obesity
Obesity is a condition where there is excess accumulation of body fat which poses a risk to the heal...
Stress and the Gender Divide
Stress has become entwined in the current lifestyle of a young working couple and has resulted in th...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use