Word: rhesus
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...green monkey may be more than a clue to AIDS' past, says Essex; it may hold a key to future treatment. Despite evidence of infection with an AlDS-like virus, the monkeys are perfectly healthy. This is not true of rhesus monkeys, which develop AlDS-like symptoms when infected. Says Essex: "The African greens may have evolved a mechanism to control the virus." This mechanism of immunity, once understood, could help scientists in their all-out battle, particularly in the search for a vaccine. Nonetheless, most researchers believe that AIDS will remain a threat for decades. Says Peter Fischinger...
Monkeys are among our most trusted substitutes in brain research. This week a study in the journal Behavioral Neuroscience shows that stage of life is also important in male and female rhesus monkeys. In a sort of shell game, young male monkeys proved better at finding food after they saw it hidden on a tray--suggesting better spatial memory. But they peaked early. By old age, male and female monkeys performed equally well, according to the study, which was led by Agnès Lacreuse at the Yerkes National Primate Research Center. All of which suggests that certain aptitudes...
...found that people who learned how to juggle increased the gray matter in their brains in certain locations. When they stopped juggling, the new gray matter vanished. A similar structural change appears to occur in people who learn a second language. Remember that new research on spatial memory in rhesus monkeys? The young females dramatically improved their performance through simple training, wiping out the gender gap altogether...
...University of Wisconsin at Madison, gerontologist Richard Weindruch studies deprivation, like Sinclair, but has a different idea about why calorie restriction works. He has been comparing calorie-restricted rhesus monkeys with unrestricted ones and has found striking differences. The CR monkeys have shown no evidence of diabetes, for example, while it affects about half of normal monkeys. Only four of his CR monkeys, moreover, have died from age-related diseases--half the rate of the control group. He believes the explanation lies in the complex activities of fat cells. The CR monkeys have much less body fat, and that--just...
...date the NEPRC facility has received sufficient funding to breed more rhesus monkeys and to build new facilities, he said...