Tag Archives: african

Coevolution between humans, bacteria reduces gastric cancer risk, research suggests

Working with colleagues in Columbia and the U.S., Scott Williams, PhD, a professor of genetics at the Geisel School of Medicine and the Institute of Quantitative Biomedical Sciences (iQBS) at Dartmouth, and his graduate student Nuri Kodaman discovered that the risk of developing gastric cancer depends heavily on both the ancestry of the person and the ancestry of Helicobacter pylori with which that person is infected. About half of the world’s population is infected with H. pylori. …

Social stigmas may contribute to African-American college students’ hesitation to breast-feed

"We need to start early with our breast-feeding education and exposure because women decide before they have children whether or not they will breast-feed," Urmeka Jefferson, assistant professor at the Sinclair School of Nursing, said. "We need to figure out how to encourage positive breast-feeding attitudes among young Black women and make them aware that breast-feeding is the normal, natural infant-feeding method." Jefferson surveyed African-American college students about their attitudes and exposure to breast-feeding and their intent to breast-feed future children. She found the majority of students knew the benefits of breast-feeding and had some level of previous exposure, such as friends or parents who had breast-fed their infants…

Tiny antisense molecules increase ‘good cholesterol’ levels in obese primates

"We have found that targeting both members of the miR-33 microRNA family with a tiny, 8-nucleotide anti-microRNA can increase HDL levels by almost 40 percent," says Anders Näär, PhD, of the MGH Center for Cancer Research, who led the study. "This sets the stage for new therapeutic strategies to treat cardiovascular disease in humans and provides a template for targeting other disease-associated microRNA families." Major regulators of gene expression, microRNAs are segments made up of 20- to 24-nucleotides that bind to complementary strands of messenger RNA, blocking their translation into proteins. A 2010 study led by Näär identified two related microRNAs — miR-33a and miR-33b — that inhibit a protein called ABCA1, which is essential for both the generation of HDL and for the transport of lipids to the liver. …

HPV strains affecting African-American women differ from vaccines

The findings, presented on Oct. 28, 2013, at the 12th annual International Conference on Frontiers in Cancer Prevention Research hosted by the American Association for Cancer Research, suggest that African-American women may be less likely to benefit from available HPV vaccines to prevent cervical cancer. HPV is a common sexually transmitted infection with more than 40 subtypes. The virus causes nearly all cases of cervical cancer, which begin as precancerous cervical abnormalities. …

Breast cancer rates stable among active component service women

As in the general U.S. population, with the exception of skin cancer, breast cancer is the most frequent cancer diagnosis among women. During the 13-year surveillance period from 2000 to 2012, 1,092 female active component members were diagnosed with breast cancer, according to the study published in the Medical Surveillance Monthly Report, a peer-reviewed journal on illnesses and diseases affecting service members from the Armed Forces Health Surveillance Center (AFHSC). Of those diagnoses, 244 (22.3 percent) of were ductal cinoma in situ (DCIS) cases. …