Navigation Links
Genetic pathway responsible for link between body clock disturbance and worsening arthritis
Date:6/10/2009

Copenhagen, Denmark, Wednesday 10 June 2009: The genes that regulate human circadian rhythm, or 'the body clock', are significantly disturbed in individuals with arthritis, according to the results of a new study presented today at EULAR 2009, the Annual Congress of the European League Against Rheumatism in Copenhagen, Denmark. Notably, a specific genetic pathway has been identified as responsible for interactions between the genes that regulate the body clock and those that may worsen symptoms of arthritis.

In a sample of 200 rheumatoid arthritis (RA) patients, sleep was determined to be significantly disturbed in over 61%, as determined by a Pittsburg Sleep Quality Index (PSQI) score of >5 (the PSQI global score was 8.55 4.69). These values were shown to correlate with several measures of arthritis disease activity, including levels of c-reactive protein, swollen joint count and DAS28*.

A further element of the study looked into the expression patterns of certain genes in mice with arthritis. Here, researchers identified a novel biochemical pathway in which the circadian regulatory gene CRY was found to up-regulate expression of a gene which promotes the activation of TNF-alpha (tumour necrosis factor-alpha, a pro-inflammatory cytokine used by the body to boost the immune system) by two fold, when comparing mice with the CRY gene removed to those with a normal copy of the gene.

Professor Shunichi Shiozawa of Kobe University Graduate School of Medicine and University Hospital, Japan, who led the research said: "Our study has shown that arthritis interferes with the genetics behind an individual's circadian rhythm and, specifically, that certain body clock genes may play a part in the activation of TNF-alpha, a signaling molecule that has an important role in the inflammation commonly seen in a number of rheumatologic conditions. The identification of this curious pathway may help to explain the 24-hour symptom cycle seen by many patients who experience worsening of joint pain and stiffness in the mornings, and lead to further research into new approaches for improving daily quality of life."

RA patients who participated in the study were attending the Kakogawa Konan Hospital and Kobe University Hospitals. Experimental arthritis was induced in mice with the CRY gene removed. Expression of the genes responsible for regulation of the human body clock were determined by immunohistochemistry and quantitative Polymerase Chain Reaction. TNF-alpha levels were measured by ELISA, and transactivation of TNF-alpha gene was examined by reporter assay.


'/>"/>

Contact: Rory Berrie
eularpressoffice@uk.cohnwolfe.com
44-078-943-86425
European League Against Rheumatism
Source:Eurekalert

Related medicine news :

1. Many Parents Share Genetic Test Findings With Kids
2. Genetic predisposition increases childhood asthma risk
3. New Alzheimers findings: High stress and genetic risk factor lead to increased memory decline
4. Test Spots Genetic Damage Done by Smoking
5. Scientists demonstate link between genetic variant and effectiveness of smoking cessation meds
6. Scientists highlight benefits of genetic research in sport, but warn of ethical concerns
7. Genetics Hold Promise, Challenges for Cancer Care
8. Researchers genetically engineer micro-organisms into tiny factories
9. Study Questions Genetic Screening for Treatable Diseases
10. Researchers provide genetic associations from a genome-wide scan for cardiovascular disease traits
11. Genetic variation affects smoking cessation treatment
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... New York, NY (PRWEB) , ... March 24, ... ... a global scale; from third world countries to hospitals in the United States, ... sparks a conversation on the current obstacles facing infection prevention and offers strategies ...
(Date:3/24/2017)... , ... March 24, 2017 , ... Texas Physical ... can be found at 9618 Huebner Road. The clinic is the group’s 7th location ... Director, and Dr. Ali Higgins, PT, will provide care from the clinic, which opened ...
(Date:3/24/2017)... ... March 24, 2017 , ... In just two days, Aqua ... micro-veggies garden on Kickstarter . Surpassing the $100,000 milestone so quickly,10-times the ... consumers (and counting) already backing the campaign. , “We are very grateful ...
(Date:3/24/2017)... County, NY (PRWEB) , ... March 24, 2017 , ... ... Somers and White Plains, N.Y., is pleased to announce Westchester resident Lauren C. Enea ... a law clerk for the firm, will concentrate her practice in elder law, Medicaid ...
(Date:3/24/2017)... ... 2017 , ... Judy Buchanan, co-owner of Serenity Natural Health ... says, “I am passionate about sharing Reiki as a holistic, complementary therapy with ... time.” , A Certified Medical Reiki™ Master trained by Raven Keys Medical Reiki™ ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... ShangPharma, a leading life science ... development and discovery services, technology, and investment ... today the intent for a strategic corporate ... the Contract Research Organizations (CRO) and Contract ... entities include ChemPartner Shanghai, ChemPartner Fengxian, ChemPartner ...
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... and Diagnostics, 2017 - 2035" report to their offering. ... The Deep Learning: Drug ... future outlook of the growing market of deep learning solutions within ... learning algorithms have emerged as a novel solution to generate relevant ...
(Date:3/24/2017)... Research and Markets has announced the addition of the ... their offering. ... provides separate comprehensive analytics for the US, Canada , ... Asia-Pacific , Latin America , and Rest of ... 2022. Also, a six-year historic analysis is provided for these markets. Market ...
Breaking Medicine Technology: