• Resources
  • Blog
  • Journalists
  • Log In
  • Sign Up
  • Data Privacy
  • Send a Release
Cision PR Newswire: news distribution, targeting and monitoring home
  • News
  • Products
    • Overview
    • Distribution by PR Newswire
    • Cision Communications Cloud®
    • Cision IR
    • Sponsored Placement
    • All Products
  • Contact
    • General Inquiries
    • Request a Demo
    • Editorial Bureaus
    • Partnerships
    • Media Inquiries
    • Worldwide Offices

 

When typing in this field, a list of search results will appear and be automatically updated as you type.

Searching for your content...

No results found. Please change your search terms and try again.
  • News in Focus
      • Browse News Releases

      • All News Releases
      • All Public Company
      • English-only
      • News Releases Overview

      • Multimedia Gallery

      • All Multimedia
      • All Photos
      • All Videos
      • Multimedia Gallery Overview

      • Trending Topics

      • All Trending Topics
  • Business & Money
      • Auto & Transportation

      • All Automotive & Transportation
      • Aerospace, Defense
      • Air Freight
      • Airlines & Aviation
      • Automotive
      • Maritime & Shipbuilding
      • Railroads and Intermodal Transportation
      • Supply Chain/Logistics
      • Transportation, Trucking & Railroad
      • Travel
      • Trucking and Road Transportation
      • Auto & Transportation Overview

      • View All Auto & Transportation

      • Business Technology

      • All Business Technology
      • Blockchain
      • Broadcast Tech
      • Computer & Electronics
      • Computer Hardware
      • Computer Software
      • Data Analytics
      • Electronic Commerce
      • Electronic Components
      • Electronic Design Automation
      • Financial Technology
      • High Tech Security
      • Internet Technology
      • Nanotechnology
      • Networks
      • Peripherals
      • Semiconductors
      • Business Technology Overview

      • View All Business Technology

      • Entertain­ment & Media

      • All Entertain­ment & Media
      • Advertising
      • Art
      • Books
      • Entertainment
      • Film and Motion Picture
      • Magazines
      • Music
      • Publishing & Information Services
      • Radio & Podcast
      • Television
      • Entertain­ment & Media Overview

      • View All Entertain­ment & Media

      • Financial Services & Investing

      • All Financial Services & Investing
      • Accounting News & Issues
      • Acquisitions, Mergers and Takeovers
      • Banking & Financial Services
      • Bankruptcy
      • Bond & Stock Ratings
      • Conference Call Announcements
      • Contracts
      • Cryptocurrency
      • Dividends
      • Earnings
      • Earnings Forecasts & Projections
      • Financing Agreements
      • Insurance
      • Investments Opinions
      • Joint Ventures
      • Mutual Funds
      • Private Placement
      • Real Estate
      • Restructuring & Recapitalization
      • Sales Reports
      • Shareholder Activism
      • Shareholder Meetings
      • Stock Offering
      • Stock Split
      • Venture Capital
      • Financial Services & Investing Overview

      • View All Financial Services & Investing

      • General Business

      • All General Business
      • Awards
      • Commercial Real Estate
      • Corporate Expansion
      • Earnings
      • Environmental, Social and Governance (ESG)
      • Human Resource & Workforce Management
      • Licensing
      • New Products & Services
      • Obituaries
      • Outsourcing Businesses
      • Overseas Real Estate (non-US)
      • Personnel Announcements
      • Real Estate Transactions
      • Residential Real Estate
      • Small Business Services
      • Socially Responsible Investing
      • Surveys, Polls and Research
      • Trade Show News
      • General Business Overview

      • View All General Business

  • Science & Tech
      • Consumer Technology

      • All Consumer Technology
      • Artificial Intelligence
      • Blockchain
      • Cloud Computing/Internet of Things
      • Computer Electronics
      • Computer Hardware
      • Computer Software
      • Consumer Electronics
      • Cryptocurrency
      • Data Analytics
      • Electronic Commerce
      • Electronic Gaming
      • Financial Technology
      • Mobile Entertainment
      • Multimedia & Internet
      • Peripherals
      • Social Media
      • STEM (Science, Tech, Engineering, Math)
      • Supply Chain/Logistics
      • Wireless Communications
      • Consumer Technology Overview

      • View All Consumer Technology

      • Energy & Natural Resources

      • All Energy
      • Alternative Energies
      • Chemical
      • Electrical Utilities
      • Gas
      • General Manufacturing
      • Mining
      • Mining & Metals
      • Oil & Energy
      • Oil and Gas Discoveries
      • Utilities
      • Water Utilities
      • Energy & Natural Resources Overview

      • View All Energy & Natural Resources

      • Environ­ment

      • All Environ­ment
      • Conservation & Recycling
      • Environmental Issues
      • Environmental Policy
      • Environmental Products & Services
      • Green Technology
      • Natural Disasters
      • Environ­ment Overview

      • View All Environ­ment

      • Heavy Industry & Manufacturing

      • All Heavy Industry & Manufacturing
      • Aerospace & Defense
      • Agriculture
      • Chemical
      • Construction & Building
      • General Manufacturing
      • HVAC (Heating, Ventilation and Air-Conditioning)
      • Machinery
      • Machine Tools, Metalworking and Metallurgy
      • Mining
      • Mining & Metals
      • Paper, Forest Products & Containers
      • Precious Metals
      • Textiles
      • Tobacco
      • Heavy Industry & Manufacturing Overview

      • View All Heavy Industry & Manufacturing

      • Telecomm­unications

      • All Telecomm­unications
      • Carriers and Services
      • Mobile Entertainment
      • Networks
      • Peripherals
      • Telecommunications Equipment
      • Telecommunications Industry
      • VoIP (Voice over Internet Protocol)
      • Wireless Communications
      • Telecomm­unications Overview

      • View All Telecomm­unications

  • Lifestyle & Health
      • Consumer Products & Retail

      • All Consumer Products & Retail
      • Animals & Pets
      • Beers, Wines and Spirits
      • Beverages
      • Bridal Services
      • Cannabis
      • Cosmetics and Personal Care
      • Fashion
      • Food & Beverages
      • Furniture and Furnishings
      • Home Improvement
      • Household, Consumer & Cosmetics
      • Household Products
      • Jewelry
      • Non-Alcoholic Beverages
      • Office Products
      • Organic Food
      • Product Recalls
      • Restaurants
      • Retail
      • Supermarkets
      • Toys
      • Consumer Products & Retail Overview

      • View All Consumer Products & Retail

      • Entertain­ment & Media

      • All Entertain­ment & Media
      • Advertising
      • Art
      • Books
      • Entertainment
      • Film and Motion Picture
      • Magazines
      • Music
      • Publishing & Information Services
      • Radio & Podcast
      • Television
      • Entertain­ment & Media Overview

      • View All Entertain­ment & Media

      • Health

      • All Health
      • Biometrics
      • Biotechnology
      • Clinical Trials & Medical Discoveries
      • Dentistry
      • FDA Approval
      • Fitness/Wellness
      • Health Care & Hospitals
      • Health Insurance
      • Infection Control
      • International Medical Approval
      • Medical Equipment
      • Medical Pharmaceuticals
      • Mental Health
      • Pharmaceuticals
      • Supplementary Medicine
      • Health Overview

      • View All Health

      • Sports

      • All Sports
      • General Sports
      • Outdoors, Camping & Hiking
      • Sporting Events
      • Sports Equipment & Accessories
      • Sports Overview

      • View All Sports

      • Travel

      • All Travel
      • Amusement Parks and Tourist Attractions
      • Gambling & Casinos
      • Hotels and Resorts
      • Leisure & Tourism
      • Outdoors, Camping & Hiking
      • Passenger Aviation
      • Travel Industry
      • Travel Overview

      • View All Travel

  • Policy & Public Interest
      • Policy & Public Interest

      • All Policy & Public Interest
      • Advocacy Group Opinion
      • Animal Welfare
      • Congressional & Presidential Campaigns
      • Corporate Social Responsibility
      • Domestic Policy
      • Economic News, Trends, Analysis
      • Education
      • Environmental
      • European Government
      • FDA Approval
      • Federal and State Legislation
      • Federal Executive Branch & Agency
      • Foreign Policy & International Affairs
      • Homeland Security
      • Labor & Union
      • Legal Issues
      • Natural Disasters
      • Not For Profit
      • Patent Law
      • Public Safety
      • Trade Policy
      • U.S. State Policy
      • Policy & Public Interest Overview

      • View All Policy & Public Interest

  • People & Culture
      • People & Culture

      • All People & Culture
      • Aboriginal, First Nations & Native American
      • African American
      • Asian American
      • Children
      • Diversity, Equity & Inclusion
      • Hispanic
      • Lesbian, Gay & Bisexual
      • Men's Interest
      • People with Disabilities
      • Religion
      • Senior Citizens
      • Veterans
      • Women
      • People & Culture Overview

      • View All People & Culture

      • In-Language News

      • español
      • português
      • Česko
      • Danmark
      • Deutschland
      • España
      • France
      • Italia
      • Nederland
      • Norge
      • Polska
      • Portugal
      • Россия
      • Slovensko
      • Suomi
      • Sverige
  • Overview
  • Distribution by PR Newswire
  • Cision Communications Cloud®
  • Cision IR
  • Sponsored Placement
  • All Products
  • General Inquiries
  • Request a Demo
  • Editorial Bureaus
  • Partnerships
  • Media Inquiries
  • Worldwide Offices
  • PR Newswire: news distribution, targeting and monitoring
  • Send a Release
    • ALL CONTACT INFO
    • Contact Us

      888-776-0942
      from 8 AM - 10 PM ET

  • Send a Release
  • Sign Up
  • Log In
  • Resources
  • Blog
  • Journalists
  • RSS
  • GDPR
  • News in Focus
    • Browse All News
    • Multimedia Gallery
    • Trending Topics
  • Business & Money
    • Auto & Transportation
    • Business Technology
    • Entertain­ment & Media
    • Financial Services & Investing
    • General Business
  • Science & Tech
    • Consumer Technology
    • Energy & Natural Resources
    • Environ­ment
    • Heavy Industry & Manufacturing
    • Telecomm­unications
  • Lifestyle & Health
    • Consumer Products & Retail
    • Entertain­ment & Media
    • Health
    • Sports
    • Travel
  • Policy & Public Interest
  • People & Culture
    • People & Culture
  • Send a Release
  • Sign Up
  • Log In
  • Resources
  • Blog
  • Journalists
  • RSS
  • GDPR
  • Overview
  • Distribution by PR Newswire
  • Cision Communications Cloud®
  • Cision IR
  • All Products
  • Send a Release
  • Sign Up
  • Log In
  • Resources
  • Blog
  • Journalists
  • RSS
  • GDPR
  • General Inquiries
  • Request a Demo
  • Editorial Bureaus
  • Partnerships
  • Media Inquiries
  • Worldwide Offices
  • Send a Release
  • Sign Up
  • Log In
  • Resources
  • Blog
  • Journalists
  • RSS
  • GDPR

Okayama University Research: The Molecular Pathogenesis of Muscular Dystrophy-associated Cardiomyopathy


News provided by

Okayama University

Feb 12, 2020, 08:36 ET

Share this article

Share this article


OKAYAMA, Japan, Feb. 12, 2020 /PRNewswire/ -- In a study recently published in Nature Communications, scientists at Okayama University describe the detailed molecular pathogenesis of muscular dystrophy-associated cardiomyopathy in mice lacking the fukutin gene (Fktn), the causative gene for Fukuyama muscular dystrophy.

Heart failure is the major cause of death for muscular dystrophy patients; however little is known for the molecular mechanism of muscular dystrophy-associated cardiomyopathy. In this study, a research team spearheaded by Senior Lecturer KATANOSAKA Yuki at Okayama University demonstrate for the first time the cellular and molecular pathomechanisms of muscular dystrophy-associated cardiomyopathy using mouse models of Fukuyama muscular dystrophy with a deficiency for the fukutin gene (Fktn), which encodes a Golgi-based ribitol-phosphate transferase that catalyzes the biosynthesis of tandem ribitol-phosphate structure on α-dystroglycans (DG). As DG and proteins of the dystrophin–glycoprotein complex provide structural support for the sarcolemma in muscle tissue, a loss of membrane fragility was thought to be a cause for cardiac dysfunction in these diseases collectively known as α-DGpathies. However, their data show that cardiac dysfunction in muscular dystrophy-associated cardiomyopathy occurs at the cellular cardiomyocyte level.

In this study, although cardiac Fktn elimination markedly reduced α-DG glycosylation and dystrophin-glycoprotein complex proteins in sarcolemma at all developmental stages, cardiac dysfunction was observed only in later adulthood, suggesting that membrane fragility is not the sole etiology of cardiac dysfunction. Younger Fktn-deficient mice show a vulnerability to hemodynamic stress conditions via impaired compensative hypertrophic response of cardiomyocytes. Adult Fktn-deficient mice exhibit altered cardiac morphology and dysfunction, suggesting that FKTN is critical for maintaining contractile function of individual cardiomyocytes.

In addition, the team show that acute Fktn-elimination causes the disordered Golgi-microtubule network in myocytes. Finally, the team show that treatment with colchicine (an FDA-approved drug for the treatment of familial Mediterranean fever) improved cardiac dysfunction of Fktn-deficient hearts via the recovery of myocyte shortening, which may open a new avenue for therapeutic strategies.

Background

Muscular dystrophy and heart failure: Muscular dystrophy is a genetic condition that results in debilitating muscle weakness from childhood. Symptoms range from difficulty with walking and running, frequent falls, and muscle stiffness to extreme pain. Although there are various types of muscular dystrophy, Fukuyama Congenital Muscular Dystrophy (FCMD), the second most prevalent in Japan, typically leads to cardiac and neurologic issues. FMCD results from a genetic mutation leading to loss of the fukutin protein.

Heart muscles: The heart muscles make up the walls of the heart and are responsible for it beating rhythmically. Damage to these muscles can result in heart attacks, arrythmias (irregular heartbeats), and heart failure. Proper myocyte structure and intracellular Ca2+ handling are important factors for healthy hearts. Microtubule are filaments required for the myocytes proper structure. The disorganization of microtubule induces the altered Ca2+ homeostasis in myocytes. In turn, golgi bodies are required for maintenance of the microtubule structure.

Reference

Yoshihiro Ujihara, Motoi Kanagawa, Satoshi Mohri, Satomi Takatsu, Kazuhiro Kobayashi, Tatsushi Toda, Keiji Naruse, Yuki Katanosaka. Elimination of fukutin reveals cellular and molecular pathomechanisms in muscular dystrophy-associated heart failure. Nature Communications, (2019) 10:5754.
DOI : 10.1038/s41467-019-13623-2 
https://www.nature.com/articles/s41467-019-13623-2

Further information
Okayama University
1-1-1 Tsushima-naka , Kita-ku , Okayama 700-8530, Japan
Public Relations Division
E-mail: [email protected] 
Website: http://www.okayama-u.ac.jp/index_e.html 
Okayama Univ. e-Bulletin: http://www.okayama-u.ac.jp/user/kouhou/ebulletin/

Okayama University Medical Research Updates (OU-MRU)
The whole volume : OU-MRU (1- ) 
Vol.1:Innovative non-invasive 'liquid biopsy' method to capture circulating tumor cells from blood samples for genetic testing 
Vol.75:More than just daily supplements — herbal medicines can treat stomach disorders

About Okayama University

Okayama University is one of the largest comprehensive universities in Japan with roots going back to the Medical Training Place sponsored by the Lord of Okayama and established in 1870. Now with 1,300 faculty and 13,000 students, the University offers courses in specialties ranging from medicine and pharmacy to humanities and physical sciences. Okayama University is located in the heart of Japan approximately 3 hours west of Tokyo by Shinkansen.

SOURCE Okayama University

Modal title

Contact Cision

  • Cision Distribution 888-776-0942
    from 8 AM - 9 PM ET

  • Chat with an Expert
  • General Inquiries
  • Request a Demo
  • Editorial Bureaus
  • Partnerships
  • Media Inquiries
  • Worldwide Offices

Products

  • Cision Communication Cloud®
  • For Marketers
  • For Public Relations
  • For IR & Compliance
  • For Agency
  • For Small Business
  • All Products

About

  • About PR Newswire
  • About Cision
  • Become a Publishing Partner
  • Become a Channel Partner
  • Careers
  • COVID-19 Resources
  • Accessibility Statement
  • Asia
  • Brazil
  • Canada
  • Czech
  • Denmark
  • Finland
  • France
  • Germany
  • India
  • Israel
  • Italy
  • Mexico
  • Middle East
  • Netherlands
  • Norway
  • Poland
  • Portugal
  • Russia
  • Slovakia
  • Spain
  • Sweden
  • United Kingdom

My Services

  • All New Releases
  • Online Member Center
  • ProfNet

Contact Cision

Products

About

My Services
  • All News Releases
  • Online Member Center
  • ProfNet
Cision Distribution Helpline
888-776-0942
  • Terms of Use
  • Privacy Policy
  • Information Security Policy
  • Site Map
  • RSS
  • Cookie Settings
Copyright © 2022 Cision US Inc.