Chronic kidney disease linked to malfunctioning mitochondria

Aug 20, 2009

Chronic kidney disease (CKD) has been linked to oxidative stress caused by dysregulation of the genes that control mitochondria. A study in the open access journal BMC Genomics has revealed alterations in respiration gene expression in the white blood cells of CKD patients.

Gianluigi Zaza and Simona Granata, from the Renal Unit of University of Bari, Italy, led a team of researchers who carried out the genomic tests. Zaza said, "Our results suggest, for the first time, that CKD patients may have an impaired mitochondrial respiratory system and this condition may be both the consequence and the cause of enhanced oxidative stress".

The researchers found 44 genes that were up-regulated in the peripheral blood mononuclear cells of CKD patients, compared to normal controls. Of these, 11 were genes were involved in the oxidative phosphorylation system. Further tests revealed that the levels reactive oxygen species (ROS) were significantly higher in the CKD group. Zaza and his colleagues suggest that these species are part of a vicious circle of respiration dysregulation that ultimately results in CKD, "Our hypothesis is that an increased production of ROS, due to the effect of pro-inflammatory mediators, may cause a profound inhibition of the oxidative phosphorylation system leading to a compensatory 'hypertrophy' of its components. In addition, a hypertrophic and impaired oxidative phosphorylation system may prime a vicious circle, causing a continuous release of ROS".

More information: Mitochondrial and oxidative stress in patients with chronic kidney disease; Simona Granata, Gianluigi Zaza, Simona Simone, Gaetano Villani, Dominga Latorre, Paola Pontrelli, Massimo Carella, Francesco PAOLO Schena, Giuseppe Grandaliano and Giovanni Pertosa; (in press); http://www.biomedcentral.com/bmcgenomics/

Source: BioMed Central (news : web)

Explore further: New hope for rare disease drug development

add to favorites email to friend print save as pdf

Related Stories

Low thyroid function common in chronic kidney disease

Jun 11, 2008

Many patients with chronic kidney disease (CKD) have mild reductions in thyroid function, or subclinical hypothyroidism—a condition that becomes more common as kidney function declines, according to a study in the September ...

Low blood sugar: A killer for kidney disease patients?

May 07, 2009

Low blood sugar, or hypoglycemia, poses a serious health threat for patients with chronic kidney disease (CKD), according to a study appearing in an upcoming issue of the Clinical Journal of the American Society Nephrology (CJASN ...

Recommended for you

New hope for rare disease drug development

8 hours ago

Using combinations of well-known approved drugs has for the first time been shown to be potentially safe in treating a rare disease, according to the results of a clinical trial published in the open access Orphanet Journal of ...

Three weeks since last Ebola case in Mali: WHO

11 hours ago

Mali has not had a case of Ebola for three weeks, the World Health Organization said Wednesday, completing one of the two incubation periods the country needs to be declared free of the virus.

Migraine may double risk for facial paralysis

11 hours ago

Migraine headache may double the risk of a nervous system condition that causes facial paralysis, called Bell's palsy, according to a new study published in the December 17, 2014, online issue of Neurology, the medical journa ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.