Chimpanzee News and Research

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100 years of HIV in humans

HIV has existed among human populations for about 100 years, decades earlier than previously believed, according to a study published Wednesday in the journal Nature, the Los Angeles Times reports (Engel, Los Angeles Times, 10/2).

5 Oct 2008

Human brains pay a price for being big

Metabolic changes responsible for the evolution of our unique cognitive abilities indicate that the brain may have been pushed to the limit of its capabilities. Research published today in BioMed Central's open access journal Genome Biology adds weight to the theory that schizophrenia is a costly by-product of human brain evolution.

4 Aug 2008

New vaccine for malaria under trial

Trials are underway, funded by the Wellcome Trust, for a new vaccine to combat the most deadly form of malaria.

5 Feb 2008

Chimpanzees don't go through menopause

Researchers have found no evidence that chimpanzees in the wild undergo menopause in the way that women do, according to a new report published online on December 13th in Current Biology, a Cell Press publication.

14 Dec 2007

Losses of long-established genes contribute to human evolution

While it is well understood that the evolution of new genes leads to adaptations that help species survive, gene loss may also afford a selective advantage.

13 Dec 2007

New genetic lineage of Ebola virus discovered in great apes

The Zaire species of Ebolavirus (ZEBOV) remains the most virulent of the various known species. It alone is responsible for 88% of human deaths from haemorrhagic fever recorded since Ebola's discovery in 1976.

13 Nov 2007

Spread of endogenous retrovirus K is similar in the DNA of humans and rhesus monkeys

According to paleontologic and molecular studies, the chimpanzee (Pan troglodytes) is the closer relative to the humans (Homo sapiens) and that both lineages had a common ancestor at 5 to 7 million years ago.

10 Oct 2007

Novel HIV vaccine set for clinical development

A promising new HIV vaccine created at The Wistar Institute has received funding for clinical development aimed at moving the vaccine into human clinical trials as soon as possible.

3 Sep 2007

Genomics study provides insight into the evolution of unique human traits

Researchers from the University of Colorado Health Sciences Center, along with colleagues from Stanford University, report the results of a large-scale, genome-wide study to investigate gene copy number differences among ten primate species, including humans.

1 Aug 2007

Origin of bipedal walking

While no one has an authoritative answer, anthropologists have long theorized that early humans began walking on two legs as a way to reduce locomotor energy costs.

17 Jul 2007

A challenge to the ancient origin of SIVagm based on African Green Monkey mitochondrial genomes

Monkey viruses related to HIV may have swept across Africa more recently than previously thought, according to new research from The University of Arizona in Tucson.

17 Jul 2007

New evidence of very recent human adaptation

A Cornell study of genome sequences in African-Americans, European-Americans and Chinese suggests that natural selection has caused as much as 10 percent of the human genome to change in some populations in the last 15,000 to 100,000 years, when people began migrating from Africa.

12 Jul 2007

Chimpanzees show unselfish concern for the welfare of others

Debates about altruism are often based on the assumption that it is either unique to humans or else the human version differs from that of other animals in important ways.

26 Jun 2007

New understanding of modern pandemic infection

Human resistance to a retrovirus that infected chimpanzees and other nonhuman primates 4 million years ago ironically may be at least partially responsible for the susceptibility of humans to HIV infection today.

23 Jun 2007

Gene mutation linked to cognition is found only in humans

The human and chimpanzee genomes vary by just 1.2 percent, yet there is a considerable difference in the mental and linguistic capabilities between the two species.

9 May 2007

Ape gestures offer clues to evolution of human communication

Researchers at the Yerkes National Primate Research Center, Emory University, have found bonobos and chimpanzees use manual gestures of their hands, feet and limbs more flexibly than they do facial expressions and vocalizations, further supporting the evolution of human language began with gestures as the gestural origin hypothesis of language suggests.

1 May 2007

Significant genetic differences found in three types of chimpanzee

The largest study to date of genetic variation among chimpanzees has found that the traditional, geography-based sorting of chimps into three populations,western, central and eastern, is underpinned by significant genetic differences, two to three times greater than the variation between the most different human populations.

21 Apr 2007

Controlling impact of Ebola - new vaccines could control impact of Ebola on wild apes

Why have large outbreaks of Ebola virus killed tens of thousands of gorillas and chimpanzees over the last decade? Observations published in the May issue of The American Naturalist provide new clues, suggesting that outbreaks may be amplified by Ebola transmission between ape social groups.

17 Apr 2007

Mapping rhesus macaque genome helps illuminate what makes us human

Researchers have sequenced the genome of the relatively ancient rhesus macaque ( Macaca mulatta ), providing perspective into how humans are genetically different from our primate relatives.

15 Apr 2007

Macaque genome analysis will improve scientists' ability to identify human genes involved in diseases

Cornell experts in computational biology and bioinformatics have made key contributions to the analysis of the genome of the rhesus macaque, better known as the rhesus monkey.

15 Apr 2007