Martine Peeters

Institute of Research for Development, Marsiglia, Provence-Alpes-Côte d'Azur, France

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Publications (246)1356.38 Total impact

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    ABSTRACT: HIV-1, the cause of AIDS, is composed of four phylogenetic lineages, groups M, N, O, and P, each of which resulted from an independent cross-species transmission event of simian immunodeficiency viruses (SIVs) infecting African apes. Although groups M and N have been traced to geographically distinct chimpanzee communities in southern Cameroon, the reservoirs of groups O and P remain unknown. Here, we screened fecal samples from western lowland (n = 2,611), eastern lowland (n = 103), and mountain (n = 218) gorillas for gorilla SIV (SIVgor) antibodies and nucleic acids. Despite testing wild troops throughout southern Cameroon (n = 14), northern Gabon (n = 16), the Democratic Republic of Congo (n = 2), and Uganda (n = 1), SIVgor was identified at only four sites in southern Cameroon, with prevalences ranging from 0.8–22%. Amplification of partial and full-length SIVgor sequences revealed extensive genetic diversity, but all SIVgor strains were derived from a single lineage within the chimpanzee SIV (SIVcpz) radiation. Two fully sequenced gorilla viruses from southwestern Cameroon were very closely related to, and likely represent the source population of, HIV-1 group P. Most of the genome of a third SIVgor strain, from central Cameroon, was very closely related to HIV-1 group O, again pointing to gorillas as the immediate source. Functional analyses identified the cytidine deaminase APOBEC3G as a barrier for chimpanzee-to-gorilla, but not gorilla-to-human, virus transmission. These data indicate that HIV-1 group O, which spreads epidemically in west central Africa and is estimated to have infected around 100,000 people, originated by cross-species transmission from western lowland gorillas.
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    ABSTRACT: Simian immunodeficiency virus (SIV) infects many primate species. Chimpanzees (Pan troglodytes) can develop an immune disease similar to human acquired immunodeficiency syndrome (AIDS). Immunosuppressed patients often suffer from opportunistic diseases such as microsporidiosis and cryptosporidiosis. We report on the occurrence of infections with microsporidia and Cryptosporidium spp. in wild-living chimpanzees, gorillas (Gorilla gorilla gorilla), bonobos (Pan paniscus), and four monkey species from the Cercopithecinae subfamily (Cercocebus agilis, Cercopithecus cephus, Cercopithecus nictitans, and Lophocebus albigena) and assess whether these infections may be good indicators of SIV-related immunosuppression. We analyzed 399 fecal samples collected in Cameroon and Democratic Republic of Congo for the presence of cross-reactive HIV antibodies using a line immunoassay (INNO-LIA®). We amplified via polymerase chain reaction (PCR) a 200–500 bp DNA fragment for the genus Encephalitozoon and the genus Enterocytozoon respectively (microsporidia), and an 820 bp DNA fragment of various Cryptosporidium species. Twenty-nine percent (45/155) of the chimpanzees samples analyzed were SIV+, whereas samples from the other primate species were SIV–. Phylogenetic analyses showed that 11 fecal samples [one SIV+, four SIV– chimpanzees, three gorillas, a bonobo, an agile mangabey (Cercocebus agilis), and a moustached monkey (Cercopithecus cephus)] are infected with microsporidia. DNA sequences of amplicons derived from eight fecal samples clustered together with Encephalitozoon hellem and three branched close to E. intestinalis. We also amplified Cryptosporidium spp. in two SIV+ chimpanzee samples and in two gorilla samples. We found no significant association between SIV infection status in chimpanzees and the presence of microsporidia or Cryptosporidium, suggesting that detection of microsporidia and Cryptosporidium is not a reliable marker for immunosuppressive status in SIV-infected primates.
    International Journal of Primatology 02/2015; DOI:10.1007/s10764-015-9820-x · 1.99 Impact Factor
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    ABSTRACT: Populations of an organism living in marked geographical or evolutionary isolation from other populations of the same species are often termed subspecies and expected to show some degree of genetic distinctiveness. The common chimpanzee (Pan troglodytes) is currently described as four geographically delimited subspecies: the western (P. t. verus), the nigerian-cameroonian (P. t. ellioti), the central (P. t. troglodytes) and the eastern (P. t. schweinfurthii) chimpanzees. Although these taxa would be expected to be reciprocally monophyletic, studies have not always consistently resolved the central and eastern chimpanzee taxa. Most studies, however, used data from individuals of unknown or approximate geographic provenance. Thus, genetic data from samples of known origin may shed light on the evolutionary relationship of these subspecies. We generated microsatellite genotypes from noninvasively collected fecal samples of 185 central chimpanzees that were sampled across large parts of their range and analyzed them together with 283 published eastern chimpanzee genotypes from known localities. We observed a clear signal of isolation by distance across both subspecies. Further, we found that a large proportion of comparisons between groups taken from the same subspecies showed higher genetic differentiation than the least differentiated between-subspecies comparison. This proportion decreased substantially when we simulated a more clumped sampling scheme by including fewer groups. Our results support the general concept that the distribution of the sampled individuals can dramatically affect the inference of genetic population structure. With regard to chimpanzees, our results emphasize the close relationship of equatorial chimpanzees from central and eastern equatorial Africa and the difficult nature of subspecies definitions. Am J Phys Anthropol, 2014. © 2014 Wiley Periodicals, Inc.
    American Journal of Physical Anthropology 02/2015; 156(2). DOI:10.1002/ajpa.22638 · 2.51 Impact Factor
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    ABSTRACT: Background: Chimpanzees (Pan troglodytes) can be divided into four subspecies. Substantial phylogenetic evidence suggests that these subspecies can be grouped into two distinct lineages: a western African group that includes P. t. verus and P. t. ellioti and a central/eastern African group that includes P. t. troglodytes and P. t. schweinfurthii. The geographic division of these two lineages occurs in Cameroon, where the rages of P. t. ellioti and P. t. troglodytes appear to converge at the Sanaga River. Remarkably, few population genetic studies have included wild chimpanzees from this region. Results: We analyzed microsatellite genotypes of 187 wild, unrelated chimpanzees, and mitochondrial control region sequencing data from 604 chimpanzees. We found that chimpanzees in Cameroon and eastern Nigeria comprise at least two, and likely three populations. Both the mtDNA and microsatellite data suggest that there is a primary separation of P. t. troglodytes in southern Cameroon from P. t. ellioti north and west of the Sanaga River. These two populations split ~200-250 thousand years ago (kya), but have exchanged one migrant per generation since separating. In addition, P. t. ellioti consists of two populations that split from one another ~4 kya. One population is located in the rainforests of western Cameroon and eastern Nigeria, whereas the second population appears to be confined to a savannah-woodland mosaic in central Cameroon. Conclusions: Our findings suggest that there are as many as three genetically distinct populations of chimpanzees in Cameroon and eastern Nigeria. P. t. troglodytes in southern Cameroon comprises one population that is separated from two populations of P. t. ellioti in western and central Cameroon, respectively. P. t. ellioti and P. t. troglodytes appear to be characterized by a pattern of isolation-with-migration, and thus, we propose that neutral processes alone can not explain the differentiation of P. t. ellioti and P. t. troglodytes.
    BMC Evolutionary Biology 01/2015; 15:3. DOI:10.1186/s12862-014-0276-y · 3.41 Impact Factor
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    ABSTRACT: Simian Immunodeficiency Viruses (SIVs) have been discovered in over 45 primate species; however, the pathogenic potential of most SIV strains remains unknown due to difficulties inherent in observing wild populations. Because those SIV infections that are pathogenic have been shown to induce changes in the host's gut microbiome, monitoring the microbiota present in fecal samples can provide a noninvasive means for studying the effects of SIV infection on the health of wild-living primates. Here, we examine the effects of SIVgor, a close relative of SIVcpz of chimpanzees and HIV-1 of humans, on the gut bacterial communities residing within wild gorillas, revealing that gorilla gut microbiomes are exceptionally robust to SIV infection. In contrast to the microbiomes of HIV-1 infected humans and SIVcpz-infected chimpanzees, SIVgor-infected gorilla microbiomes exhibit neither rises in the frequencies of opportunistic pathogens nor elevated rates of microbial turnover within individual hosts. Regardless of SIV infection status, gorilla microbiomes assort into enterotypes, one of which is compositionally analogous to those identified in humans and chimpanzees. The other gorilla enterotype appears specialized for a leaf-based diet and is enriched in environmentally derived bacterial genera. We hypothesize that the acquisition of this gorilla-specific enterotype was enabled by lowered immune-system control over the composition of the microbiome. Our results indicate differences between the pathology of SIVgor and SIVcpz/HIV-1 infections, demonstrating the utility of investigating host microbial ecology as a means for studying disease in wild primates of high conservation priority. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
    Molecular Ecology 12/2014; DOI:10.1111/mec.13057 · 5.84 Impact Factor
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    ABSTRACT: Access to antiretroviral treatment (ART) becomes more and more effective in resource-limited settings (RLS). However, this global effort would be even more profitable if the access to laboratory services especially in decentralized settings was strengthened. We report the virological outcome and HIV-1 drug resistance in three West African countries using dried blood spots (DBS) samples. We included HIV-1-infected adults on ART ≥6 months and followed up in capital cities and decentralized sites in Senegal, Mali and Guinea-Conakry. Patients were consecutively enrolled and DBS were collected in field conditions and kept at ambient temperature before transfer to the reference laboratory. Viral load (VL) was quantified using the NucliSENS EasyQ HIV-1 v1.2. Genotyping of HIV-1 pol gene was performed using in-house protocol. Of the 407 participants, 119, 152 and 136 were from Senegal, Mali and Guinea-Conakry, respectively. The median treatment duration was 36 months [IQR: 6-136]. Virological failure (VF) (VL≥3log10 copies/mL) was observed in 26% (95% confidence interval (CI), 18-35; n=31), 11% (95% CI, 6-17; n=16) and 24% (95% CI, 17-32; n=33) of patients in Senegal, Mali and Guinea-Conakry, respectively (p=0.001). Of samples presenting VL≥3log10 copies/mL (n=80), 70 were successfully genotyped. At least one drug resistance mutation (DRM) was detected in the following proportions: 70% (95% CI, 50-86; n=19), 93% (95% CI, 68-100; n=14) and 68% (95% CI, 48-84; n=19) in Senegal, Mali and Guinea-Conakry, respectively (p=0.22). Twenty-six per cent (26%; 95% CI, 16-38; n=18) of patients in VF harboured wild-type viruses, which is likely indicative of weak adherence. Phylogenetic analysis showed the predominance of CRF02_AG subtype (73%; 95% CI, 61-83; n=51). We describe the ART outcome in capital and rural settings of Senegal, Mali and Guinea-Conakry. Our results in all of the three countries highlight the need to reinforce the ART adherence in order to minimize the occurrence of drug resistance. In addition, these findings provide additional evidence that the use of DBS as a sampling support could assist virological monitoring of patients on ART in remote areas.
    Journal of the International AIDS Society 12/2014; 17(1):19315. DOI:10.7448/IAS.17.1.19315 · 4.21 Impact Factor
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    ABSTRACT: African green monkeys (AGMs) represent the most widely distributed nonhuman primates species in Africa. SIVagm naturally infects four of the 6 AGMs species at high prevalence in a species-specific manner. To date, only limited information is available on molecular characteristics of SIVagm infecting C. tantalus. Here, we characterized the full-length genome of a virus infecting a naturally infected captive C. tantalus from Cameroon by amplifying and sequencing sub-genomic PCR fragments. The isolate (SIVagmTAN-CM545) is 9,923bp long and contained all canonical genes of a functional SIV. SIVagmTAN-CM545 showed a mosaic structure, with gag, pol, nef and accessory genes closely related to SIVagmSAB infecting C. sabaeus monkeys from west Africa, and the env gene, closely related to SIVagmTAN infecting tantalus monkeys from Central Africa. Thus SIVagmTAN-CM545 is SIVagmSAB/SIVagmTAN recombinant. These unexpected findings suggest that the evolution of SIVagm is more complex than previously thought and warrant further studies. Copyright © 2014 Elsevier B.V. All rights reserved.
    Infection, genetics and evolution: journal of molecular epidemiology and evolutionary genetics in infectious diseases 12/2014; DOI:10.1016/j.meegid.2014.12.005 · 3.26 Impact Factor
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    ABSTRACT: Wild apes are considered to be the most serious reservoir and source of zoonoses. However, little data are available about the gut microbiota and pathogenic bacteria in gorillas. For this propose, a total of 48 fecal samples obtained from 21 Gorilla gorilla gorilla individuals (as revealed via microsatellite analysis) were screened for human bacterial pathogens using culturomics and molecular techniques. By applying culturomics to one index gorilla and using specific media supplemented by plants, we tested 12,800 colonies and identified 147 different bacterial species, including 5 new species. Many opportunistic pathogens were isolated, including 8 frequently associated with human diseases; Mycobacterium bolletii, Proteus mirabilis, Acinetobacter baumannii, Klebsiella pneumoniae, Serratia marcescens, Escherichia coli, Staphylococcus aureus and Clostridium botulinum. The genus Treponema accounted for 27.4% of the total reads identified at the genus level via 454 pyrosequencing. Using specific real-time PCR on 48 gorilla fecal samples, in addition to classical human pathogens, we also observed the fastidious bacteria Bartonella spp. Borrelia spp., Coxiella burnetii and Tropheryma whipplei in the gorilla population. We estimated that the prevalence of these pathogens vary between 4.76% and 85.7%. Therefore, gorillas share many bacterial pathogens with humans suggesting that they could be a reservoir for their emergence.
    Scientific Reports 11/2014; 4:7174. DOI:10.1038/srep07174 · 5.08 Impact Factor
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    ABSTRACT: Most simian immunodeficiency viruses use their Nef protein to antagonize the host restriction factor tetherin. A deletion in human tetherin confers Nef resistance, representing a hurdle to successful zoonotic transmission. HIV-1 group M evolved to utilize the viral protein U (Vpu) to counteract tetherin. Although HIV-1 group O has spread epidemically in humans, it has not evolved a Vpu-based tetherin antagonism. Here we show that HIV-1 group O Nef targets a region adjacent to this deletion to inhibit transport of human tetherin to the cell surface, enhances virion release, and increases viral resistance to inhibition by interferon-?. The Nef protein of the inferred common ancestor of group O viruses is also active against human tetherin. Thus, Nef-mediated antagonism of human tetherin evolved prior to the spread of HIV-1 group O and likely facilitated secondary virus transmission. Our results may explain the epidemic spread of HIV-1 group O. Copyright © 2014 Elsevier Inc. All rights reserved.
    Cell Host & Microbe 11/2014; 16(5):639-650. DOI:10.1016/j.chom.2014.10.002 · 12.19 Impact Factor
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    ABSTRACT: Humans are ecosystems containing trillions of microorganisms, but the evolutionary history of this microbiome is obscured by a lack of knowledge about microbiomes of African apes. We sequenced the gut communities of hundreds of chimpanzees, bonobos, and gorillas and developed a phylogenetic approach to reconstruct how present-day human microbiomes have diverged from those of ancestral populations. Compositional change in the microbiome was slow and clock-like during African ape diversification, but human microbiomes have deviated from the ancestral state at an accelerated rate. Relative to the microbiomes of wild apes, human microbiomes have lost ancestral microbial diversity while becoming specialized for animal-based diets. Individual wild apes cultivate more phyla, classes, orders, families, genera, and species of bacteria than do individual humans across a range of societies. These results indicate that humanity has experienced a depletion of the gut flora since diverging from Pan.
    Proceedings of the National Academy of Sciences 11/2014; DOI:10.1073/pnas.1419136111 · 9.81 Impact Factor
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    ABSTRACT: Thirty years after the discovery of HIV-1, the early transmission, dissemination, and establishment of the virus in human populations remain unclear. Using statistical approaches applied to HIV-1 sequence data from central Africa, we show that from the 1920s Kinshasa (in what is now the Democratic Republic of Congo) was the focus of early transmission and the source of pre-1960 pandemic viruses elsewhere. Location and dating estimates were validated using the earliest HIV-1 archival sample, also from Kinshasa. The epidemic histories of HIV-1 group M and nonpandemic group O were similar until ~1960, after which group M underwent an epidemiological transition and outpaced regional population growth. Our results reconstruct the early dynamics of HIV-1 and emphasize the role of social changes and transport networks in the establishment of this virus in human populations.
    Science 10/2014; 346(6205):56-61. DOI:10.1126/science.1256739 · 31.20 Impact Factor
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    ABSTRACT: Although gorillas regarded as the largest extant species of primates and have a close phylogenetic relationship with humans, eukaryotic communities have not been previously studied in these populations. Herein, 35 eukaryotic primer sets targeting the 18S rRNA gene, internal transcribed spacer gene and other specific genes were used firstly to explore the eukaryotes in a fecal sample from a wild western lowland gorilla (Gorilla gorilla gorilla). Then specific real-time PCRs were achieved in additional 48 fecal samples from 21 individual gorillas to investigate the presence of human eukaryotic pathogens. In total, 1,572 clones were obtained and sequenced from the 15 cloning libraries, resulting in the retrieval of 87 eukaryotic species, including 52 fungi, 10 protozoa, 4 nematodes and 21 plant species, of which 52, 5, 2 and 21 species, respectively, have never before been described in gorillas. We also reported the occurrence of pathogenic fungi and parasites (i.e. Oesophagostomum bifurcum (86%), Necator americanus (43%), Candida tropicalis (81%) and other pathogenic fungi were identified). In conclusion, molecular techniques using multiple primer sets may offer an effective tool to study complex eukaryotic communities and to identify potential pathogens in the gastrointestinal tracts of primates.
    Scientific Reports 09/2014; 4:6417. DOI:10.1038/srep06417 · 5.08 Impact Factor
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    ABSTRACT: To understand the evolutionary histories and conservation potential of wild animal species it is useful to assess whether taxa are genetically structured into different populations and identify the underlying factors responsible for any clustering. Landscape features such as rivers may influence genetic population structure, and analysis of structure by sex can further reveal effects of sex-specific dispersal. Using microsatellite genotypes obtained from noninvasively collected fecal samples we investigated the population structure of 261 western lowland gorillas (WLGs) (Gorilla gorilla gorilla) from seven locations spanning an approximately 37,000 km2 region of mainly continuous rain forest within Central African Republic (CAR), Republic of Congo and Cameroon. We found our sample to consist of two or three significantly differentiated clusters. The boundaries of the clusters coincided with courses of major rivers. Moreover, geographic distance detoured around rivers better-explained variation in genetic distance than straight line distance. Together these results suggest that major rivers in our study area play an important role in directing WLG gene flow. The number of clusters did not change when males and females were analyzed separately, indicating a lack of greater philopatry in WLG females than males at this scale. Am. J. Primatol. © 2014 Wiley Periodicals, Inc.
    American Journal of Primatology 09/2014; 76(9). DOI:10.1002/ajp.22274 · 2.14 Impact Factor
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    ABSTRACT: Vector-borne parasites of the genus Leishmania are responsible for severe human diseases. Cutaneous leishmaniasis, a common form of the disease, is most often caused by the transmission of Leishmania major to humans by female phlebotomine sandflies. Recently, Apes are increasingly seen as source of zoonotic diseases including malaria and rickettsiosis. To examine the possibility whether gorillas harbor Leishmania spp., we screened fecal samples from wild western lowland gorillas (Gorilla gorilla gorilla) in Cameroon for the presence of these pathogens. Of 91 wild gorilla feces samples, 12 contained Leishmania parasites and 4 contained phlebotomine sand fly vectors. The molecular identity was determined by running three different PCR tests as L. major. Next, fluorescence in situ hybridization (FISH) was performed to visualize L. major parasites in the feces of the gorillas. Both promastigote and amastigote forms of the parasite were found. This work strongly suggests that wild gorillas carry pathogenic Leishmania parasites.
    The Journal of Infectious Diseases 07/2014; DOI:10.1093/infdis/jiu380 · 5.78 Impact Factor
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    ABSTRACT: The Simian Immunodeficiency Virus (SIV) mus/mon/gsn lineage is a descendant of one of the precursor viruses to the HIV-1/SIVcpz/gor viral lineage. SIVmus and SIVgsn were sequenced from mustached and greater spot nosed monkeys in Cameroon and SIVmon from mona monkeys in Cameroon and Nigeria. In order to further document the genetic diversity of SIVmus, we analyzed two full-length genomes of new strains identified in Gabon. The whole genomes obtained showed the expected reading frames for gag, pol, vif, vpr, tat, rev, env, nef, and also for a vpu gene. Analyses showed that the Gabonese SIVmus strains were closely related and formed a monophyletic clade within the SIVmus/mon/gsn lineage. Nonetheless, within this lineage, the position of both new SIVmus differed according to the gene analyzed. In pol and nef gene, phylogenetic topologies suggested different evolutions for each of the two new SIVmus strains whereas in the other nucleic fragments studied, their positions fluctuated between SIVmon, SIVmus-1, and SIVgsn. In addition, in C1 domain of env, we identified an insertion of seven amino acids characteristic for the SIVmus/mon/gsn and HIV‑1/SIVcpz/SIVgor lineages. Our results show a high genetic diversity of SIVmus in mustached monkeys and suggest cross-species transmission events and recombination within SIVmus/mon/gsn lineage. Additionally, in Central Africa, hunters continue to be exposed to these simian viruses, and this represents a potential threat to humans.
    Viruses 07/2014; 6(7):2880-2898. DOI:10.3390/v6072880 · 3.28 Impact Factor
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    ABSTRACT: The existence and genetic make-up of most primate retroviruses was revealed by studies of bushmeat and fecal samples from unhabituated primate communities. For these, detailed data on intra-and within-species contact rates are generally missing, which makes identification of factors influencing transmission a challenging task. Here we present an assessment of 12 years of research on primate retroviruses in the Taï National Park area, Côte d'Ivoire. We discuss insights gained into the prevalence, within-and cross-species transmission of primate retroviruses (including towards local human populations) and the importance of virus–host interactions in determining cross-species transmission risk. Finally we discuss how retroviruses ecology and evolution may change in a shifting environment and identify avenues for future research.
    Virology 07/2014; 460-461:147-153. DOI:10.1016/j.virol.2014.05.012 · 3.35 Impact Factor
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    ABSTRACT: Despite recent declines in HIV incidence, sub-Saharan Africa remains the most heavily affected region in the global HIV/AIDS epidemic. Estimates of HIV prevalence in African military personnel are scarce and inconsistent. We conducted a serosurvey between June and September 2007 among 4043 Armed Forces personnel of the Democratic Republic of Congo (FARDC) stationed in Kinshasa, Democratic Republic of Congo (DRC) to determine the prevalence of HIV and syphilis infections and describe associated risk behaviours. Participants provided blood for HIV and syphilis testing and responded to a demographic and risk factor questionnaire. The prevalence of HIV was 3.8% and the prevalence of syphilis was 11.9%. Women were more likely than men to be HIV positive, (7.5% vs. 3.6% respectively, aOR: 1.66, 95% C.I: 1.21-2.28, p < 0.05). Factors significantly associated with HIV infection included gender and self-reported genital ulcers in the 12 months before date of enrollment. The prevalence of HIV in the military appears to be higher than the general population in DRC (3.8% vs. 1.3%, respectively), with women at increased risk of infection.
    International Journal of STD & AIDS 05/2014; 26(3). DOI:10.1177/0956462414533672 · 1.04 Impact Factor
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    ABSTRACT: We tested 114 faecal samples from wild simian immunodeficiency virus (SIV)-positive (n = 43) and SIV-negative (n = 71) chimpanzees (Pan troglodytes troglodytes) in southeast Cameroon for the presence of gastrointestinal parasites by direct smear. We observed cysts from different protozoa (Entamoeba coli and Entamoeba histolytica / Entamoeba dispar, Endolimax nana, Iodamoeba butschlii, Chilomastix mesnili, Balantidium coli and Blastocystis cells) and trophozoites from Troglodytella abrassarti and Balantidium coli. Eggs from different helminths (strongylids, Ascaris lumbricoides, Abbreviata caucasica, Trichuris sp., Capillaria sp., Enterobius anthropopeci, Bertiella sp., Hymenolepis diminuta and an undetermined fluke) were also observed. Finally, we observed eggs that could not be properly identified and classified. We did not observe any differences between the SIV + and SIV - samples except for the unidentified eggs. The studied chimpanzees were highly parasitised by strongylid (85.1 % of prevalence), Troglodytella (43.8 %) and Blastocystis (2.9 %), and the frequency of the other parasites ranged from 0.9 to 8.8 %. These high levels of parasite infections could represent an additional burden in a population where there is a high rate of the SIV virus in circulation.
    Parasitology Research 04/2014; 113(7). DOI:10.1007/s00436-014-3904-y · 2.33 Impact Factor
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    ABSTRACT: Not Applicable.
    AIDS research and human retroviruses 03/2014; 30(7). DOI:10.1089/AID.2014.0035 · 2.46 Impact Factor
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    ABSTRACT: Enteroviruses (EVs) are a genetically and antigenically diverse group of viruses infecting humans. A mostly distinct set of EV variants have additionally been documented to infect wild apes and several, primarily captive, Old World monkey (OWM) species. To investigate the prevalence and genetic characteristics of EVs infecting OWMs in the wild, fecal samples from mandrills (Mandrillus sphinx) and other species collected in remote regions of southern Cameroon were screened for EV RNA. Remarkably high rates of EV positivity were detected in M. sphinx (100 of 102 screened), Cercocebus torquatus (7/7), and Cercopithecus cephus (2/4), with high viral loads indicative of active infection. Genetic characterization in VP4/VP2 and VP1 regions allowed EV variants to be assigned to simian species H (EV-H) and EV-J (including one or more new types), while seven matched simian EV-B variants, SA5 and EV110 (chimpanzee). Sequences from the remaining 70 formed a new genetic group distinct in VP4/2 and VP1 region from all currently recognized human or simian EV species. Complete genome sequences were obtained from three to determine their species assignment. In common with EV-J and the EV-A A13 isolate, new group sequences were chimeric, being most closely related to EV-A in capsid genes and to EV-B in the nonstructural gene region. Further recombination events created different groupings in 5' and 3' untranslated regions. While clearly a distinct EV group, the hybrid nature of new variants prevented their unambiguous classification as either members of a new species or as divergent members of EV-A using current International Committee on Taxonomy of Viruses (ICTV) assignment criteria.
    Journal of Virology 03/2014; 88(11). DOI:10.1128/JVI.00088-14 · 4.65 Impact Factor

Publication Stats

7k Citations
1,356.38 Total Impact Points

Institutions

  • 1999–2015
    • Institute of Research for Development
      Marsiglia, Provence-Alpes-Côte d'Azur, France
  • 2008–2014
    • Université Montpellier 2 Sciences et Techniques
      Montpelhièr, Languedoc-Roussillon, France
    • Tsinghua University
      Peping, Beijing, China
  • 2003–2014
    • Université de Montpellier 1
      Montpelhièr, Languedoc-Roussillon, France
    • University of Strasbourg
      Strasburg, Alsace, France
  • 2013
    • Yale University
      • Department of Ecology and Evolutionary Biology
      New Haven, Connecticut, United States
    • University of Pennsylvania
      • Perelman School of Medicine
      Philadelphia, PA, United States
    • University of Cologne
      • Institute of Virology
      Köln, North Rhine-Westphalia, Germany
  • 2012
    • Université René Descartes - Paris 5
      Lutetia Parisorum, Île-de-France, France
  • 2008–2012
    • Universität Ulm
      • • Institute of Molecular Virology
      • • Institute of Virology
      Ulm, Baden-Wuerttemberg, Germany
  • 1988–2011
    • International Centre of Medical Research of Franceville
      Franceville, Haut-Ogooué, Gabon
  • 2010
    • University of Helsinki
      • Haartman Institute
      Helsinki, Southern Finland Province, Finland
    • University of Yaounde I
      Jaúnde, Centre Region, Cameroon
  • 2009
    • Institute of Agricultural Research for Development
      Jaúnde, Centre Region, Cameroon
  • 2001–2009
    • University of Alabama at Birmingham
      • Department of Medicine
      Birmingham, AL, United States
  • 2002–2007
    • University of Leuven
      • Department of Microbiology and Immunology
      Louvain, Flanders, Belgium
  • 2006
    • Institut de Recherche en Cancerologie de Montpellier
      Montpelhièr, Languedoc-Roussillon, France
    • Institut de France
      Lutetia Parisorum, Île-de-France, France
  • 2003–2005
    • Institut de Recherches Mathematiques , Cote d'Ivoire, Abidjan
      Abijan, Lagunes, Ivory Coast
  • 2002–2003
    • National Hospital of Niamey
      Niamey, Niamey, Niger
  • 2001–2002
    • Cheikh Anta Diop University, Dakar
      Dakar, Dakar, Senegal
  • 1995–1999
    • University of Calabar
      Calabar, Cross River, Nigeria
    • Shanghai Institute of Biological Products
      Shanghai, Shanghai Shi, China
    • Biomedical primate research centre
      Rijswijk, South Holland, Netherlands
  • 1998
    • Los Alamos National Laboratory
      Лос-Аламос, California, United States
  • 1996
    • Centre Hospitalier Universitaire de Montpellier
      Montpelhièr, Languedoc-Roussillon, France
  • 1994
    • University of Yaoundé II
      Jaúnde, Centre, Cameroon
    • University of Antwerp
      Antwerpen, Flemish, Belgium
  • 1993
    • Claude Bernard University Lyon 1
      Villeurbanne, Rhône-Alpes, France