Infertility treatment versus fertility control: the challenges for developing countries
...rovide interim alternative solutions that could be promoted in developing countries. "Adoption has not been popular, but with better information and counselling, it is now being used increasingly in several African countries," he concluded....Researchers locate tumor-suppressor gene in fruit flies that controls cell production, death
...ruit fly, or drosophila, genome for mutations that promoted abnormal tissue growth. To determine the relationship between hippo and a similar protein found in humans, the researchers replaced the tumor-suppressor gene in fruit flies with a protein in humans called MST2. This resulted in the reduction of tum......the native species, the alien earthworm's activity promoted nutrient cycling and enhanced the growth of a fast-growing annual grass relative to slower-growing forbs and grasses. Meanwhile, the native earthworm fostered greater plant diversity and the retention of nutrients in the soil. The researchers belie...JCI Table of Contents, 1 October, 2003
...nsplant administration of IL-7 in mice selectively promoted host T cell reconstitution - by stimulating the proliferation of host T cells that did not react to the engrafted cells but had no effect on reactive T cells (which would normally contribute to the development of GVHD. The study demonstrates that IL...MIT engineers report new approach to tissue engineering
...we show for the first time that polymer scaffolds promoted proliferation, differentiation and organization of human embryonic stem cells into 3D structures," the researchers wrote in a paper to appear the week of Oct. 13 in the online edition of the Proceedings of the National Academy of Sciences. Further, t...White House awards National Medal of Science to Rockefeller University's James Darnell
...oma and head and neck tumors. "This discovery has promoted a flurry of research into the ways cells receive signals to become and remain specialized, to respond to growth factors and to deal with infection," adds Nurse. Darnell is the third Rockefeller University scientist in five weeks to be honored with a ...JCI Table of Contents, November 3, 2003
...ts that atherosclerosis is an inflammatory disease promoted by hypercholesterolemia. However, the role of immune cells has been controversial. Hansson and colleagues crossed atherosclerosis-prone ApoE/ mice with transgenic mice carrying dominant-negative TGF-b receptor II in T cells. In the absence of functio...Does shade coffee help or hinder conservation?
While shade coffee is promoted as protecting tropical forests and birds, conservationists are split on whether it actually works. The December issue of Conservation Biology has the latest on the debate: one side says shade coffee can give farmers a reason to preserve tropical biod...Science paper: Overharvesting of Brazil nuts leading to fewer trees
...e past two decades, Brazil nut extraction has been promoted as an economic alternative to logging and other destructive economic activities without words of caution," she said. "These findings tell us that Brazil nut economic systems are still much better than other extraction systems in the Amazon, but it is...Endangered sea turtles make a dramatic turnaround
...spots, written and performed by coastal residents, promoted the need to conserve hawksbill turtles and support the Pearl Cays Hawksbill Conservation Project. While recent conservation efforts and educational outreach have been effective in increasing the number of hatchlings produced in the Pearl Cays, other...Two-drug approach might shorten painful labor, reduce Caesarean sections
...stone) and relaxin successfully hastened labor and promoted healthy delivery of pups in rats altered so that their reproductive systems mimicked the human reproductive system, researchers at the University of Illinois at Urbana-Champaign report in the January issue of the American Journal of Obstetrics and Gy...Other highlights in the February 4 issue of JNCI
... growing recognition that colorectal cancer may be promoted by hyperinsulinemia and insulin resistance suggests that a diet inducing high blood glucose levels and an elevated insulin response may contribute to a metabolic environment conducive to tumor growth. Simin Liu, M.D., Sc.D., of Harvard Medical School...Digging for truth in Guatemala
...e scientists who, through action and example, have promoted human rights, usually at great personal cost. In 2004, the Program honors the members of the Guatemalan Forensic Anthropology Foundation (Fundacin de Antropologa Forense de Guatemala, FAFG). The FAFG investigates mass human rights abuses, focusing on...Biochemical clues to long lifespan revealed
...und that in the presence of oxidative stress, Sir2 promoted the ability of at least one FOXO protein, FOXO3, to provide stress resistance while suppressing its ability to induce cell death. In mammals, FOXO proteins confer stress resistance by triggering reactions that detoxify the damaging chemicals, known ...Secondary complications and restoration of function in SCI
...th SCI. The data suggest that although neostigmine promoted bowel movement, it also caused bronchoconstriction, which may worsen a weak respiratory system. When neostigmine is combined with glycopyrrolate, bowel movement is facilitated while bronchoconstriction is prevented. For patients with SCI who require ...Researchers find a protein that controls cell growth
...t cells with high levels of a mutated form of Skp2 promoted the degradation of p27. As a result, these cells entered the S phase of the cell cycle faster than control cells with unmutated Skp2. The premature entry of a cell into the S phase is a potential cause of genetic instability, which in turn can ...Breast self examination increases women's concerns but has no effect on mortality
...ppsala, Sweden, will explain why BSE should not be promoted as something that can decrease mortality from breast cancer. Professor Holmberg will comment on a study to be presented at the conference by Professor Vladimir Semiglazov, who conducted and analysed a randomised controlled trial of BSE in nearly 100...JCI table of contents, 15 March 2004
...timulated IgA overproduction, but more importantly promoted its improper transport into the gut lumen in transgenic mice. These studies indicate that improper regulation of LIGHT itself may be a major underlying factor for IgAN and focus on its production and regulation should shed more light on this disease...Can a plant that acts like poison ivy cure prostate cancer?
... years ago that croton oil and its constituent TPA promoted tumors in laboratory animals following the introduction of a strong carcinogen at a low dose. Subsequent laboratory tests, however, produced dramatically different outcomes. "It turned out that extremely low concentrations of TPA had ......se array of microclimates and habitats that likely promoted speciation in many lineages of plants and animals. Ferns may have been able to exploit this increased complexity through the evolutionary acquisition of this novel, more versatile photoreceptor," she said. Relic descendants of the ancient ferns stil...