Nathan Seppa
Biomedical Writer (retired September 2015)
 
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All Stories by Nathan Seppa
- 			 Health & Medicine Health & MedicineCommon additive thwarts malaria parasiteTriclosan--a drug used as an antimicrobial agent in toothpaste, deodorant, and other products--kills rodent malaria parasites in mice and human malaria parasites in test-tube studies. 
- 			 Health & Medicine Health & MedicineTeeth grinding linked to sleep apneaRhythmic grinding of teeth during sleep occurs at least once a week in as many as 8.2 percent of people. 
- 			 Health & Medicine Health & MedicineLyme vaccine works in a curious wayAntibodies formed in response to the vaccine against Lyme disease kill the bacteria that cause it while they are still in the deer tick that spreads it. 
- 			 Health & Medicine Health & MedicineIt pays to keep those islet cellsA patient who has inflammation of the pancreas and needs to have the organ removed can avoid getting diabetes if islet cells are salvaged from the pancreas and reimplanted into the liver. 
- 			 Health & Medicine Health & MedicineHIV-related viruses still cross species lineVarious potentially dangerous strains of simian immunodeficiency virus exist in wild primates in Africa and are still being spread among people who hunt the animals for meat. 
- 			 Health & Medicine Health & MedicineFound: Mutation for deadly nerve disorderTwo research teams have discovered the genetic mutation that causes familial dysautonomia, a lethal hereditary disease that causes nervous system damage. 
- 			 Health & Medicine Health & MedicineRaloxifene doesn’t hike breast densityEstrogen-replacement therapy that includes estrogen increases breast-tissue density among postmenopausal women, but the estrogen-replacement drug raloxifene doesn’t. 
- 			  Protein May Tie Obesity to DiabetesA newly discovered protein secreted by fat cells could be the link between obesity and type II diabetes. 
- 			 Health & Medicine Health & MedicineCocaine link to heart attack bolsteredRegular cocaine use may account for one-fourth of nonfatal heart attacks in people under age 45. 
- 			 Health & Medicine Health & MedicineGene mutation can spur autoimmunityA mutation of a gene on the X chromosome can lead to a dangerous autoimmune disorder and type I diabetes. 
- 			 Health & Medicine Health & MedicineProtein pair induces nerve repair in miceMice genetically engineered to make two proteins normally active in early nerve development are able to regrow damaged nerve fibers somewhat in their central nervous systems.