mitochondria tagged posts

How some cancers resist chemotherapy…
Mitochondria, tiny structures present in most cells, are known for their energy-generating machinery. Now, Salk researchers have discovered a new function of mitochondria: they set off molecular alarms when cells are exposed to stress or chemicals that can damage DNA, such as chemotherapy. The results, published online in Nature Metabolism on December 9, 2019, could lead to new cancer treatments that prevent tumors from becoming resistant to chemotherapy.

“Mitochondria are acting as a first line of defense in sensing DNA stress...

CDKN1B/p27 is localized in mitochondria and improves respiration-dependent processes in the cardiovascular system—New mode of action for caffeine. PLOS Biology, 2018; 16 (6): e2004408 DOI: 10.1371/journal.pbio.2004408

A new study shows that a caffeine concentration equivalent to four cups of coffee promotes the movement of a regulatory protein into mitochondria, enhancing their function and protecting cardiovascular cells from damage. Caffeine consumption has been associated with lower risks for multiple diseases, including type II diabetes, heart disease, and stroke, but the mechanism underlying these protective effects has been unclear.

A new study by Judith Haendeler and Joachim Altschmied of the Medical Faculty, Heinrich-Heine-University and the IUF-Leibniz Research Institute for Env...

Top left: PGC1 deficiency leads to severe muscle damage, evidenced by numerous centralized nuclei (highlighted with arrows), which is likely due to impaired mitochondrial energy metabolism (bottom left: blue staining shows impaired mitochondrial activity). Such muscle damage and mitochondrial impairment is largely rescued by ERR? overexpression (top and bottom right). Credit: Salk Institute

If you’ve ever wondered how strenuous exercise translates into better endurance, researchers at the Salk Institute may have your answer. In a study published in the journal Cell Reports on March 6, 2018, scientists in Ronald Evans’ lab have shown that the protein ERRγ (ERR gamma) helps deliver many of the benefits associated with endurance exercise...

Some diabetes medicine reduce the risk of getting Parkinson´s disease by 35%. Copyright: Colourbox

A Norwegian study shows that the taking of diabetes medicine reduces the risk of getting Parkinson´s disease. Researchers at the Department of Clinical Medicine at the University of Bergen (UiB) have discovered that medical treatment against diabetes reduces the risk of getting Parkinson´s disease by 35%. “We have made an important discovery, which takes us a step further towards solving the Parkinson´s riddle,” says researcher Charalampos Tzoulis. He has lead the study together with researcher Kristoffer Haugarvoll at the same department.

Tzoulis says that the researchers have to do follow-up studies on the diabetes medicine to fully understand why it protects against Parkinson´s disease...