Medical Dialogues
  • Dermatology
Login Register
This site is intended for healthcare professionals only
Login Register
  • MD Brand Connect
  • Vaccine Hub
  • MDTV
    • Breaking News
    • Medical News Today
    • Health News Today
    • Latest
    • Journal Club
    • Medico Legal Update
    • Latest Webinars
    • MD Shorts
    • Health Dialogues
  • Fact Check
  • Health Dialogues
Medical Dialogues
  • Medical News & Guidelines
      • Anesthesiology
      • Cardiology and CTVS
      • Critical Care
      • Dentistry
      • Dermatology
      • Diabetes and Endocrinology
      • ENT
      • Gastroenterology
      • Medicine
      • Nephrology
      • Neurology
      • Obstretics-Gynaecology
      • Oncology
      • Ophthalmology
      • Orthopaedics
      • Pediatrics-Neonatology
      • Psychiatry
      • Pulmonology
      • Radiology
      • Surgery
      • Urology
      • Laboratory Medicine
      • Diet
      • Nursing
      • Paramedical
      • Physiotherapy
  • Health news
      • Doctor News
      • Government Policies
      • Hospital & Diagnostics
      • International Health News
      • Medical Organization News
      • Medico Legal News
      • NBE News
      • NMC News
  • Fact Check
      • Bone Health Fact Check
      • Brain Health Fact Check
      • Cancer Related Fact Check
      • Child Care Fact Check
      • Dental and oral health fact check
      • Diabetes and metabolic health fact check
      • Diet and Nutrition Fact Check
      • Eye and ENT Care Fact Check
      • Fitness fact check
      • Gut health fact check
      • Heart health fact check
      • Kidney health fact check
      • Medical education fact check
      • Men's health fact check
      • Respiratory fact check
      • Skin and hair care fact check
      • Vaccine and Immunization fact check
      • Women's health fact check
  • AYUSH
    • Ayurveda
    • Homeopathy
    • Siddha
    • Unani
    • Yoga
  • State News
      • Andaman and Nicobar Islands
      • Andhra Pradesh
      • Arunachal Pradesh
      • Assam
      • Bihar
      • Chandigarh
      • Chattisgarh
      • Dadra and Nagar Haveli
      • Daman and Diu
      • Delhi
      • Goa
      • Gujarat
      • Haryana
      • Himachal Pradesh
      • Jammu & Kashmir
      • Jharkhand
      • Karnataka
      • Kerala
      • Ladakh
      • Lakshadweep
      • Madhya Pradesh
      • Maharashtra
      • Manipur
      • Meghalaya
      • Mizoram
      • Nagaland
      • Odisha
      • Puducherry
      • Punjab
      • Rajasthan
      • Sikkim
      • Tamil Nadu
      • Telangana
      • Tripura
      • Uttar Pradesh
      • Uttrakhand
      • West Bengal
  • Medical Education
      • Ayush Education News
      • Dentistry Education News
      • Medical Admission News
      • Medical Colleges News
      • Medical Courses News
      • Medical Universities News
      • Nursing education News
      • Paramedical Education News
      • Study Abroad
  • Industry
      • Health Investment News
      • Health Startup News
      • Medical Devices News
      • Pharma News
      • Pharmacy Education News
      • Industry Perspective
  • MDTV
      • Health Dialogues MDTV
      • Health News today MDTV
      • Latest Videos MDTV
      • Latest Webinars MDTV
      • MD shorts MDTV
      • Medical News Today MDTV
      • Medico Legal Update MDTV
      • Top Videos MDTV
      • Health Perspectives MDTV
      • Journal Club MDTV
      • Medical Dialogues Show
This site is intended for healthcare professionals only
LoginRegister
Medical Dialogues
LoginRegister
  • Home
  • Medical news & Guidelines
    • Anesthesiology
    • Cardiology and CTVS
    • Critical Care
    • Dentistry
    • Dermatology
    • Diabetes and Endocrinology
    • ENT
    • Gastroenterology
    • Medicine
    • Nephrology
    • Neurology
    • Obstretics-Gynaecology
    • Oncology
    • Ophthalmology
    • Orthopaedics
    • Pediatrics-Neonatology
    • Psychiatry
    • Pulmonology
    • Radiology
    • Surgery
    • Urology
    • Laboratory Medicine
    • Diet
    • Nursing
    • Paramedical
    • Physiotherapy
  • Health news
    • Doctor News
    • Government Policies
    • Hospital & Diagnostics
    • International Health News
    • Medical Organization News
    • Medico Legal News
    • NBE News
    • NMC News
  • Fact Check
    • Bone Health Fact Check
    • Brain Health Fact Check
    • Cancer Related Fact Check
    • Child Care Fact Check
    • Dental and oral health fact check
    • Diabetes and metabolic health fact check
    • Diet and Nutrition Fact Check
    • Eye and ENT Care Fact Check
    • Fitness fact check
    • Gut health fact check
    • Heart health fact check
    • Kidney health fact check
    • Medical education fact check
    • Men's health fact check
    • Respiratory fact check
    • Skin and hair care fact check
    • Vaccine and Immunization fact check
    • Women's health fact check
  • AYUSH
    • Ayurveda
      • Ayurveda Giuidelines
      • Ayurveda News
    • Homeopathy
      • Homeopathy Guidelines
      • Homeopathy News
    • Siddha
      • Siddha Guidelines
      • Siddha News
    • Unani
      • Unani Guidelines
      • Unani News
    • Yoga
      • Yoga Guidelines
      • Yoga News
  • State News
    • Andaman and Nicobar Islands
    • Andhra Pradesh
    • Arunachal Pradesh
    • Assam
    • Bihar
    • Chandigarh
    • Chattisgarh
    • Dadra and Nagar Haveli
    • Daman and Diu
    • Delhi
    • Goa
    • Gujarat
    • Haryana
    • Himachal Pradesh
    • Jammu & Kashmir
    • Jharkhand
    • Karnataka
    • Kerala
    • Ladakh
    • Lakshadweep
    • Madhya Pradesh
    • Maharashtra
    • Manipur
    • Meghalaya
    • Mizoram
    • Nagaland
    • Odisha
    • Puducherry
    • Punjab
    • Rajasthan
    • Sikkim
    • Tamil Nadu
    • Telangana
    • Tripura
    • Uttar Pradesh
    • Uttrakhand
    • West Bengal
  • Medical Education
    • Ayush Education News
    • Dentistry Education News
    • Medical Admission News
    • Medical Colleges News
    • Medical Courses News
    • Medical Universities News
    • Nursing education News
    • Paramedical Education News
    • Study Abroad
  • Industry
    • Health Investment News
    • Health Startup News
    • Medical Devices News
    • Pharma News
      • CDSCO (Central Drugs Standard Control Organisation) News
    • Pharmacy Education News
    • Industry Perspective
  • Home
  • Cardiology-CTVS
  • Cardiology & CTVS News
  • High TMAO Levels...

High TMAO Levels Predict Abdominal Aortic Aneurysm Progression and Surgical Risk: JAMA

Written By : Medha Baranwal |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2025-09-01T07:45:16+05:30  |  Updated On 1 Sept 2025 7:45 AM IST
High TMAO Levels Predict Abdominal Aortic Aneurysm Progression and Surgical Risk: JAMA
  • facebook
  • twitter
  • linkedin
  • whatsapp
  • Telegram
  • Email

USA: A study published in JAMA Cardiology has found that circulating levels of trimethylamine N-oxide (TMAO), a metabolite produced by gut microbiota, may serve as an important biomarker in predicting the risk of abdominal aortic aneurysms (AAA), their growth rate, and the likelihood of surgical intervention.

The research, led by Dr. Scott J. Cameron from the Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, analyzed whether TMAO levels could help identify patients at heightened risk for aneurysm-related complications.
The prospective study included two independent clinical cohorts: 237 patients in Uppsala, Sweden, and 658 patients in Cleveland, Ohio. All participants underwent serial aortic imaging and long-term monitoring, while plasma TMAO concentrations were measured using advanced mass spectrometry techniques.
The following were the key findings of the study:
  • Elevated TMAO levels showed a consistent and significant association with abdominal aortic aneurysm outcomes.
  • In the European cohort, higher TMAO was linked to a 2.75-fold greater risk of rapid aneurysm growth and a 2.67-fold higher likelihood of surgical recommendation.
  • In the US cohort, elevated TMAO corresponded to a 2.71-fold increased risk of fast-growing aneurysms and a 2.73-fold higher chance of surgery.
  • Combined analysis of both cohorts confirmed more than double the adjusted risk for both accelerated aneurysm progression and surgical need.
  • Incorporating TMAO levels into cardiovascular risk models improved prediction accuracy for aneurysm growth and surgical requirement.
  • The findings suggest that individuals with elevated TMAO may benefit from closer surveillance and earlier intervention to prevent rupture or dissection.
The study also pointed out certain limitations. Family history of aneurysms and connective tissue disorders were not included in the US data, while dietary information was unavailable in both cohorts. Additionally, TMAO was measured only once at baseline, leaving it unclear whether serial monitoring might provide greater prognostic value. Despite these constraints, the association between TMAO and AAA progression remained robust across both populations and different health care settings.
The researchers highlighted that current treatment options for AAA are limited to surgical repair, with no effective medical therapies to slow disease progression. Given that previous animal studies have shown that targeting TMAO production can block aneurysm growth and rupture, these findings open the possibility of developing gut microbiota–based therapeutic approaches. They concluded that prospective interventional studies are now essential to confirm whether lowering TMAO can effectively reduce aneurysm growth rates and delay the need for surgery.
Reference:
Cameron SJ, Li XS, Benson TW, et al. Circulating Trimethylamine N-Oxide and Growth Rate of Abdominal Aortic Aneurysms and Surgical Risk. JAMA Cardiol. Published online August 20, 2025. doi:10.1001/jamacardio.2025.2698


JAMA Cardiologyabdominal aortic aneurysmstrimethylamine N-oxide (TMAO)
Source : JAMA Cardiology
Medha Baranwal
Medha Baranwal

    MSc. Biotechnology

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

    Show Full Article
    Next Story

    Editorial

    The Prediabetes Show, Episode 4: Metformin in Prediabetes - A Vaccination Pill for Diabetes Prevention in 65 Countries

    The Prediabetes Show, Episode 4: Metformin in Prediabetes - A Vaccination Pill for Diabetes...

    Research Summit 2025: A Roadmap for Quality, Innovation and Global Recognition - Dr Soumick Ranjan Sahoo

    Research Summit 2025: A Roadmap for Quality, Innovation and Global Recognition - Dr Soumick Ranjan...

    India’s Health Horizon: From Ground Realities to Global Leadership - Dr Raghav Gupta

    India’s Health Horizon: From Ground Realities to Global Leadership - Dr Raghav Gupta

    Research Gaps In Neonatology: An India-First Lens With Global Context - Dr Arti Maria

    Research Gaps In Neonatology: An India-First Lens With Global Context - Dr Arti Maria

    The Prediabetes Show Episode 3 - Tackling Patient Conversations around Prediabetes and Metformin

    The Prediabetes Show Episode 3 - Tackling Patient Conversations around Prediabetes and Metformin

    View All

    Journal Club Today

    Truncal Acne Explained: Causes and Management by Dermatologist Dr. Jushya Bhatia Sarin

    Truncal Acne Explained: Causes and Management by Dermatologist Dr. Jushya Bhatia Sarin

    View All

    Health News Today

    Health Bulletin 01/September/2025

    Health Bulletin 01/September/2025

    View All
    © 2022 All Rights Reserved.
    Powered By: Hocalwire
    X
    We use cookies for analytics, advertising and to improve our site. You agree to our use of cookies by continuing to use our site. To know more, see our Cookie Policy and Cookie Settings.Ok