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Certad G, Gantois N, Merlin S, Martel S, Even G, Viscogliosi E, Audebert C, Chabé M. Frequency and Molecular Identification of Cryptosporidium in Adult Prim'Holstein Dairy Cattle Farms in the North of France. Microorganisms 2024; 12:335. [PMID: 38399739 PMCID: PMC10892647 DOI: 10.3390/microorganisms12020335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Cryptosporidium apicomplexan protozoa are ubiquitous intracellular agents affecting humans and animals. In particular, bovine cryptosporidiosis is recognized as endemic worldwide. However, epidemiological investigations remain limited in France regarding the burden of these parasites in cattle. To improve our understanding of the epidemiology of cryptosporidiosis, the main aim of this study was to determine the frequency and the genetic diversity of Cryptosporidium in adult Prim'Holstein dairy cattle farms in the north of France. Fecal specimens were collected from 1454 non-diarrheic and non-pregnant animals (nulli-, primi-, or multiparous) throughout 20 farms in an area of 110 km around Lille. For Cryptosporidium species identification, nested PCR followed by sequence and phylogenetic analyses were used. The overall frequency of Cryptosporidium spp. in-fection was 30.00% (C.I. 95%: 12.83-54.33) in farms and 0.89% (C.I. 95%: 0.498-1.57) at the individual level. In primi- or multiparous cows, only C. andersoni was found. C. ryanae, C. bovis/xiaoi and C. andersoni were detected in heifers. The phylogenetic tree confirmed that analyzed sequences were grouped with known reference sequences reported in dairy cattle. Further studies on the cumulative prevalence, risks factors and pathogenicity are needed to give a more accurate assessment of the impact of Cryptosporidium infection in dairy cattle in France.
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Affiliation(s)
- Gabriela Certad
- Centre National de la Rrecherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (Inserm), Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (N.G.); (E.V.); (M.C.)
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille, F-59000 Lille, France
| | - Nausicaa Gantois
- Centre National de la Rrecherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (Inserm), Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (N.G.); (E.V.); (M.C.)
| | - Sophie Merlin
- GD Biotech-Gènes Diffusion, F-59000 Lille, France; (S.M.); (S.M.); (G.E.); (C.A.)
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Sophie Martel
- GD Biotech-Gènes Diffusion, F-59000 Lille, France; (S.M.); (S.M.); (G.E.); (C.A.)
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Gaël Even
- GD Biotech-Gènes Diffusion, F-59000 Lille, France; (S.M.); (S.M.); (G.E.); (C.A.)
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Eric Viscogliosi
- Centre National de la Rrecherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (Inserm), Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (N.G.); (E.V.); (M.C.)
| | - Christophe Audebert
- GD Biotech-Gènes Diffusion, F-59000 Lille, France; (S.M.); (S.M.); (G.E.); (C.A.)
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Magali Chabé
- Centre National de la Rrecherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (Inserm), Centre Hospitalier Universitaire de Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (N.G.); (E.V.); (M.C.)
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Audebert C, Even G, Vandenabeele N, Mouray A, Chabé M. [A novel strategy taking gut microbiota fingerprints into account for robust and reproducible animal experiments]. Med Sci (Paris) 2023; 39:934-936. [PMID: 38108723 DOI: 10.1051/medsci/2023174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023] Open
Affiliation(s)
- Christophe Audebert
- GD Biotech-Gènes Diffusion, Lille, France - PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Gaël Even
- GD Biotech-Gènes Diffusion, Lille, France - PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Nicolas Vandenabeele
- Plateforme d'expérimentations et de hautes technologies animales, Institut Pasteur de Lille, Lille, France - Institut Pasteur de Lille, US 41-UAR 2014-PLBS, Université Lille, CNRS, Inserm, CHU Lille, Lille, France
| | - Anthony Mouray
- Plateforme d'expérimentations et de hautes technologies animales, Institut Pasteur de Lille, Lille, France - Institut Pasteur de Lille, US 41-UAR 2014-PLBS, Université Lille, CNRS, Inserm, CHU Lille, Lille, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - Centre d'infection et d'immunité de Lille (CIIL), Lille, France
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Naguib D, Gantois N, Desramaut J, Arafat N, Mandour M, Abdelmaogood AKK, Mosa AF, Denoyelle C, Even G, Certad G, Chabé M, Viscogliosi E. Molecular Epidemiology and Genetic Diversity of the Enteric Protozoan Parasite Blastocystis sp. in the Northern Egypt Population. Pathogens 2023; 12:1359. [PMID: 38003823 PMCID: PMC10674599 DOI: 10.3390/pathogens12111359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
Blastocystis sp. is currently reported as the most frequent single-celled eukaryote inhabiting the intestinal tract of humans and a wide range of animal groups. Its prevalence is especially higher in developing countries linked with fecal peril. Despite a growing interest in this enteric protozoan, certain geographical regions potentially at high risk of infection, such as North Africa, remain under-investigated. Therefore, a large-scale molecular epidemiological survey, including 825 participants presenting digestive disorders or not, was conducted in five governorates located in Northern Egypt. A real-time polymerase chain reaction (qPCR) assay was performed to identify the parasite in stool samples, followed by direct sequencing of the positive PCR products for subtyping and genotyping of the corresponding isolates. The overall prevalence was shown to reach 72.4% in the Egyptian cohort, coupled with a variable frequency depending on the governorate (41.3 to 100%). Among the 597 positive participants, a large proportion of them (39.4%) presented mixed infections, as determined by sequencing. The remaining individuals with single infection were predominantly colonized by subtype 3 (ST3) (48.3%) followed by ST1 (39.5%), ST2 (10.8%), ST14 (1.1%), and ST10 (0.3%). This was the first report of ST10 and ST14 in North Africa. Age, sex, digestive symptoms, and health status of the participants or contact with animals were not identified as significant risk factors for Blastocystis sp. occurrence or affecting the ST distribution. In contrast, substantial variations in the prevalence and ST distribution of the parasite were reported according to the governorate. Genotyping of isolates revealed the lower intra-ST diversity for ST3, followed by ST1 and then ST2. By combining subtyping and genotyping data, a widespread inter-human transmission was strongly suggested for ST3 within the Egyptian cohort. Regarding ST1 and ST2, additional animal or environmental sources of infection by these STs have been proposed, whereas the few cases of colonization by ST10 and ST14 were likely the result of zoonotic transmission from bovid. These investigations clearly emphasized the active circulation of Blastocystis sp. in Northern Egypt and the necessity for health authorities to implement prevention campaigns towards the population and quality control of drinking water, with the aim of reducing the burden of this enteric protozoan in this endemic country.
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Affiliation(s)
- Doaa Naguib
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Nausicaa Gantois
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
| | - Jeremy Desramaut
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
| | - Nagah Arafat
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Mohamed Mandour
- Clinical Pathology Department, Faculty of Medicine, Suez Canal University, Ismailia 41511, Egypt; (M.M.); (A.K.K.A.)
| | | | - Ashraf Fawzy Mosa
- Parasitology Department, Medical Research Institute, Alexandria University, Alexandria 21500, Egypt;
| | - Constance Denoyelle
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
| | - Gaël Even
- GD Biotech-Gènes Diffusion, F-59000 Lille, France;
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Gabriela Certad
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille, F-59000 Lille, France
| | - Magali Chabé
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
| | - Eric Viscogliosi
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France; (D.N.); (N.G.); (J.D.); (C.D.); (G.C.); (M.C.)
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Even G, Mouray A, Vandenabeele N, Martel S, Merlin S, Lebrun-Ruer S, Chabé M, Audebert C. Bact-to-Batch: A Microbiota-Based Tool to Determine Optimal Animal Allocation in Experimental Designs. Int J Mol Sci 2023; 24:ijms24097912. [PMID: 37175619 PMCID: PMC10178137 DOI: 10.3390/ijms24097912] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/17/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
The basis of any animal experimentation begins with the housing of animals that should take into account the need for splitting animals into similar groups. Even if it is generally recommended to use the minimum number of animals necessary to obtain reliable and statistically significant results (3Rs rule), the allocation of animals is currently mostly based on randomness. Since variability in gut microbiota is an important confounding factor in animal experiments, the main objective of this study was to develop a new approach based on 16S rRNA gene sequencing analysis of the gut microbiota of animals participating in an experiment, in order to correctly assign the animals across batches. For this purpose, a pilot study was performed on 20 mouse faecal samples with the aim of establishing two groups of 10 mice as similar as possible in terms of their faecal microbiota fingerprinting assuming that this approach limits future analytical bias and ensures reproducibility. The suggested approach was challenged with previously published data from a third-party study. This new method allows to embrace the unavoidable microbiota variability between animals in order to limit artefacts and to provide an additional assurance for the reproducibility of animal experiments.
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Affiliation(s)
- Gaël Even
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences, Institut Pasteur de Lille, F-59019 Lille, France
| | - Anthony Mouray
- Plateforme d'Expérimentations et de Hautes Technologies Animales, Institut Pasteur de Lille, F-59019 Lille, France
- Institut Pasteur de Lille, US 41-UAR 2014-PLBS, Université Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France
| | - Nicolas Vandenabeele
- Plateforme d'Expérimentations et de Hautes Technologies Animales, Institut Pasteur de Lille, F-59019 Lille, France
- Institut Pasteur de Lille, US 41-UAR 2014-PLBS, Université Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France
| | - Sophie Martel
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences, Institut Pasteur de Lille, F-59019 Lille, France
| | - Sophie Merlin
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences, Institut Pasteur de Lille, F-59019 Lille, France
| | - Ségolène Lebrun-Ruer
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences, Institut Pasteur de Lille, F-59019 Lille, France
| | - Magali Chabé
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d'Infection et d'Immunité de Lille, Université de Lille, F-59000 Lille, France
| | - Christophe Audebert
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences, Institut Pasteur de Lille, F-59019 Lille, France
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Nguyen LDN, Gantois N, Hoang TT, Do BT, Desramaut J, Naguib D, Tran TN, Truong AD, Even G, Certad G, Chabé M, Viscogliosi E. First Epidemiological Survey on the Prevalence and Subtypes Distribution of the Enteric Parasite Blastocystis sp. in Vietnam. Microorganisms 2023; 11:microorganisms11030731. [PMID: 36985304 PMCID: PMC10056178 DOI: 10.3390/microorganisms11030731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/14/2023] Open
Abstract
Although Blastocystis sp. is the most common enteric protozoan in human stools worldwide, various geographical areas remain to be investigated regarding the frequency and circulation of this parasite. Such is the case of some developing countries in Southeast Asia that exhibit a higher risk for parasitic infections due to unsanitary conditions. While several epidemiological surveys have been conducted, for instance, in Thailand, little or no data are available from neighboring countries, such as Vietnam. Therefore, in order to determine the prevalence and subtype (ST) distribution of Blastocystis sp. and to clarify the transmission of the parasite, the first molecular epidemiological survey ever conducted in this country was performed. For this purpose, a total of 310 stool specimens were collected from patients enrolled at the Family Hospital of Da Nang and then tested for the presence of Blastocystis sp. by real-time Polymerase Chain Reaction (qPCR), followed by subtyping of the isolates. The overall prevalence of the parasite reached 34.5% in this Vietnamese cohort. No significant association was found between parasite infection and gender, age, symptomatic status, contact with animals or source of drinking water. Out of the 107 positive patients, nearly half presented mixed infections. Therefore, some of the corresponding samples were reanalyzed by end-point PCR, followed by PCR products cloning and sequencing. Of the 88 total subtyped isolates, ST3 was predominant, followed by ST10, ST14, ST7, ST1, ST4, ST6 and ST8. Our study was, thus, the first to report ST8, ST10 and ST14 in the Southeast Asian population. The predominance of ST3 within this Vietnamese cohort, coupled with its low intra-ST genetic variability, reflected a large inter-human transmission, while ST1 transmission was suggested to be not only anthroponotic, but also likely correlated to animal or environmental sources. Strikingly, isolates considered of animal origin (ST6-ST8, ST10 and ST14) accounted for more than 50% of the subtyped isolates. These findings improved our knowledge of the epidemiology and circulation of Blastocystis sp. in Southeast Asia, and in particular, in Vietnam, and highlighted both a major burden of the parasite in this country and a high risk of zoonotic transmission, mainly from poultry and livestock.
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Affiliation(s)
| | - Nausicaa Gantois
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | | | - Bong Thi Do
- Family Hospital, 73 Nguyen Huu Tho Street, Da Nang 550000, Vietnam
| | - Jeremy Desramaut
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
| | - Doaa Naguib
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Tuan Ngoc Tran
- Family Hospital, 73 Nguyen Huu Tho Street, Da Nang 550000, Vietnam
| | - Anh Duc Truong
- Family Hospital, 73 Nguyen Huu Tho Street, Da Nang 550000, Vietnam
| | - Gaël Even
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Gabriela Certad
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille, F-59000 Lille, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
- Correspondence: (M.C.); (E.V.)
| | - Eric Viscogliosi
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, F-59000 Lille, France
- Correspondence: (M.C.); (E.V.)
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Naguib D, Gantois N, Desramaut J, Arafat N, Even G, Certad G, Chabé M, Viscogliosi E. Prevalence, Subtype Distribution and Zoonotic Significance of Blastocystis sp. Isolates from Poultry, Cattle and Pets in Northern Egypt. Microorganisms 2022; 10:2259. [PMID: 36422329 PMCID: PMC9696183 DOI: 10.3390/microorganisms10112259] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 07/25/2023] Open
Abstract
Blastocystis sp. is a widespread enteric protozoan that frequently infects human and animal groups. Despite its burden and zoonotic potential worldwide, epidemiological investigations remain limited in animal groups that come in contact with humans. Therefore, the largest survey ever conducted in North Africa was performed in Egypt with the aim to investigate the prevalence and subtype (ST) distribution of Blastocystis sp. in animals. For this purpose, a total of 889 fecal specimens were collected from chickens (217), cattle (373), dogs (144) and cats (155) from six governorates of northern Egypt. These specimens were then screened for the presence of Blastocystis sp. using a quantitative real-time PCR, followed by subtyping the isolates. The overall prevalence of Blastocystis sp. reached 9.2% (82/889), with the highest infection rates reported in chickens (17.0%) and domestic cattle (11.0%), highlighting an active circulation of the parasite in both animal groups. In contrast, the low prevalence in cats (2.6%) and the absence of the parasite in dogs suggested that pets are not natural hosts of Blastocystis sp. ST10 and ST14 were largely predominant in cattle, confirming that both STs represented cattle-adapted STs. The report of one ST3 and one ST4 isolate in this animal group could be explained by an accidental zoonosis from humans to animals. All but one of the subtyped isolates in poultry belonged to ST7, which was considered as an avian ST. The presence of a remaining isolate of ST14 likely reflected a transient infection from contact between birds and cattle feces. The same environmental contamination was also likely the source of the ST14 infection in three of the four positive cats, with the remaining animals infected by ST3 as the result of human-to-animal transmission. These occurrences and subtyping data, combined with those previously collected in the Egyptian population, implies that poultry could play a significant role as reservoir for zoonotic transmission, which would not be the case for cattle and pets.
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Affiliation(s)
- Doaa Naguib
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Nausicaa Gantois
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
| | - Jeremy Desramaut
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
| | - Nagah Arafat
- Department of Poultry Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35516, Egypt
| | - Gaël Even
- GD Biotech-Gènes Diffusion, F-59000 Lille, France
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Gabriela Certad
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille, F-59000 Lille, France
| | - Magali Chabé
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
| | - Eric Viscogliosi
- CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, F-59000 Lille, France
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Sawant M, Benamrouz-Vanneste S, Meloni D, Gantois N, Even G, Guyot K, Creusy C, Duval E, Wintjens R, Weitzman JB, Chabe M, Viscogliosi E, Certad G. Putative SET-domain methyltransferases in Cryptosporidium parvum and histone methylation during infection. Virulence 2022; 13:1632-1650. [PMID: 36097362 PMCID: PMC9487757 DOI: 10.1080/21505594.2022.2123363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Cryptosporidium parvum is a leading cause of diarrhoeal illness worldwide being a significant threat to young children and immunocompromised patients, but the pathogenesis caused by this parasite remains poorly understood. C. parvum was recently linked with oncogenesis. Notably, the mechanisms of gene expression regulation are unexplored in Cryptosporidium and little is known about how the parasite impact host genome regulation. Here, we investigated potential histone lysine methylation, a dynamic epigenetic modification, during the life cycle of the parasite. We identified SET-domain containing proteins, putative lysine methyltransferases (KMTs), in the C. parvum genome and classified them phylogenetically into distinct subfamilies (namely CpSET1, CpSET2, CpSET8, CpKMTox and CpAKMT). Our structural analysis further characterized CpSET1, CpSET2 and CpSET8 as histone lysine methyltransferases (HKMTs). The expression of the CpSET genes varies considerably during the parasite life cycle and specific methyl-lysine antibodies showed dynamic changes in parasite histone methylation during development (CpSET1:H3K4; CpSET2:H3K36; CpSET8:H4K20). We investigated the impact of C. parvum infection on the host histone lysine methylation. Remarkably, parasite infection led to a considerable decrease in host H3K36me3 and H3K27me3 levels, highlighting the potential of the parasite to exploit the host epigenetic regulation to its advantage. This is the first study to describe epigenetic mechanisms occurring throughout the parasite life cycle and during the host–parasite interaction. A better understanding of histone methylation in both parasite and host genomes may highlight novel infection control strategies.
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Affiliation(s)
- Manasi Sawant
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Sadia Benamrouz-Vanneste
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France.,Unité de Recherche Smart and Sustainable Cities, Faculté de Gestion, Economie et Sciences, Institut Catholique de Lille, France
| | - Dionigia Meloni
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Nausicaa Gantois
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Gaël Even
- Gènes Diffusion, F-59501 Douai, France.,PEGASE-Biosicences Plateforme d'Expertises Génomiques Appliquées aux Sciences Expérimentales, Institut Pasteur de Lille, F-59000 Lille, France
| | - Karine Guyot
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Colette Creusy
- Service d'Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), F-59000 Lille, France
| | - Erika Duval
- Service d'Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), F-59000 Lille, France
| | - René Wintjens
- Unit of Microbiology, Bioorganic and Macromolecular Chemistry, Department of Research in Drug Development (RD3), Faculté de Pharmacie, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Jonathan B Weitzman
- UMR7216 Epigenetics and Cell, Université Paris Cité, Fate, CNRS, F-75013 Paris, France
| | - Magali Chabe
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Eric Viscogliosi
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France
| | - Gabriela Certad
- Université de Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 9017 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000 Lille, France.,Délégation à la Recherche Clinique et à l'Innovation, Groupement des Hôpitaux de l'Institut Catholique de Lille, F-59462 Lomme, France
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Even G, Lokmer A, Rodrigues J, Audebert C, Viscogliosi E, Ségurel L, Chabé M. Changes in the Human Gut Microbiota Associated With Colonization by Blastocystis sp. and Entamoeba spp. in Non-Industrialized Populations. Front Cell Infect Microbiol 2021; 11:533528. [PMID: 33816323 PMCID: PMC8013780 DOI: 10.3389/fcimb.2021.533528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 01/29/2021] [Indexed: 01/04/2023] Open
Abstract
Human gut microbial communities are mainly composed of bacteria, but also include fungi, viruses, archaea, and protozoa, whose role in the gut ecosystem has only recently begun to be recognized. For example, humans colonized by Blastocystis (a gut protozoan with controversial pathogenicity) host a more diverse bacterial microbiota than individuals not carrying it, suggesting that its presence may be beneficial for the host. In parallel, the presence of non-pathogenic Entamoeba spp. has been associated with an increased diversity and compositional shifts in the bacterial microbiota of healthy rural individuals in Cameroon. However, Entamoeba and Blastocystis, the two most prevalent human gut protozoa, have never been studied in the same individuals, preventing the study of their interaction. As Blastocystis is one of the few gut protozoa commonly found in industrialized populations, which are otherwise mostly devoid of gut eukaryotes, we need to focus on rural “traditional” populations, who harbor a higher diversity of gut eukaryotes (whether pathogenic or commensal) in order to study protozoa interactions in the gut ecosystem. To this end, we profiled the gut bacterial microbiota of 134 healthy Cameroonian adults using 16S rRNA gene amplicon sequencing data. Entamoeba and Blastocystis presence and co-occurrence pattern in the same individuals were determined using metagenomic shotgun data. We found that, when taking into account both protozoa jointly, Blastocystis was associated with both a higher richness and a higher evenness of the gut bacterial microbiota, while Entamoeba was associated only with a higher richness. We demonstrated a cumulative influence of these protozoa on bacterial microbiome diversity. Furthermore, while the abundance of several common taxa (for example, Ruminococcaceae, Coprococcus and Butyrivibrio) varied according to Blastocystis colonization, only a single Bacteroides amplicon sequence variant was found to be differentially abundant between Entamoeba-negative and Entamoeba-positive samples. Given the specific signature of each protozoan on the gut microbiota and the seemingly stronger association for Blastocystis, our results suggest that Blastocystis and Entamoeba interact with gut bacteria each in its own way, but experimental studies are needed to explore the precise mechanisms of these interactions.
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Affiliation(s)
- Gaël Even
- Gènes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Ana Lokmer
- UMR7206 Eco-Anthropologie, CNRS-MNHN-Université de Paris, Paris, France
| | - Jules Rodrigues
- UMR7206 Eco-Anthropologie, CNRS-MNHN-Université de Paris, Paris, France
| | - Christophe Audebert
- Gènes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Eric Viscogliosi
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Laure Ségurel
- UMR7206 Eco-Anthropologie, CNRS-MNHN-Université de Paris, Paris, France.,Laboratoire de Biométrie et Biologie Evolutive UMR5558, CNRS - Université Lyon 1, Université de Lyon, Villeurbanne, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
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Saidoune F, Even G, Escoubet B, Chezel J, Charles N, Nicoletti A, Papo T, Sacré K. Effet JANUS de la neutralisation de BAFF sur la progression de la maladie athéromateuse associée au lupus. Rev Med Interne 2020. [DOI: 10.1016/j.revmed.2020.10.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Khaled S, Gantois N, Ly AT, Senghor S, Even G, Dautel E, Dejager R, Sawant M, Baydoun M, Benamrouz-Vanneste S, Chabé M, Ndiaye S, Schacht AM, Certad G, Riveau G, Viscogliosi E. Prevalence and Subtype Distribution of Blastocystis sp. in Senegalese School Children. Microorganisms 2020; 8:microorganisms8091408. [PMID: 32932661 PMCID: PMC7564003 DOI: 10.3390/microorganisms8091408] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 12/12/2022] Open
Abstract
Blastocystis sp. is an enteric protozoan that frequently colonizes humans and many animals. Despite impacting on human health, data on the prevalence and subtype (ST) distribution of Blastocystis sp. remain sparse in Africa. Accordingly, we performed the first multicenter and largest epidemiological survey ever conducted on Blastocystis sp. for this continent. A total of 731 stool samples collected from healthy school children living in 10 villages of the northwestern region of Senegal were tested for the presence of Blastocystis sp. by real-time polymerase chain reaction followed by subtyping of positive samples. Considerable variation in prevalence between villages (51.7 to 100%) was evident with the overall prevalence being 80.4%. Mixed infections were identified in 23% of positive individuals. Among 453 school children with a single infection, ST2 was predominant, followed by ST1, ST3, ST7, ST10, and ST14; this is the first report of ST10 and ST14 in humans. Genetic polymorphisms were evident at the intra-ST level with the identification of numerous ST1 to ST3 genotypes. ST1 showed the greatest intra-ST diversity followed by ST2 and ST3. The prevalence and distribution of STs and genotypes varied among target villages, pointing to several potential infection sources, including human-to-human, zoonotic, and waterborne transmission.
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Affiliation(s)
- Salma Khaled
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Nausicaa Gantois
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Amadou Tidjani Ly
- Biomedical Research Center Espoir Pour La Santé (BRC-EPLS), BP 226 Saint-Louis, Senegal; (A.T.L.); (S.S.)
| | - Simon Senghor
- Biomedical Research Center Espoir Pour La Santé (BRC-EPLS), BP 226 Saint-Louis, Senegal; (A.T.L.); (S.S.)
| | - Gaël Even
- Gènes Diffusion, F-59501 Douai, France;
- PEGASE-Biosciences (Plateforme d’Expertises Génomiques Appliquées aux Sciences Expérimentales), Institut Pasteur de Lille, F-59000 Lille, France
| | - Ellena Dautel
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Romane Dejager
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Manasi Sawant
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Martha Baydoun
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Sadia Benamrouz-Vanneste
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
- Laboratoire Ecologie et Biodiversité, Institut Catholique de Lille, Faculté de Gestion Economie et Sciences, F-59000 Lille, France
| | - Magali Chabé
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
| | - Seynabou Ndiaye
- Région Médicale de Saint-Louis, MSAS, BP 226 Saint-Louis, Senegal;
| | - Anne-Marie Schacht
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
- Biomedical Research Center Espoir Pour La Santé (BRC-EPLS), BP 226 Saint-Louis, Senegal; (A.T.L.); (S.S.)
| | - Gabriela Certad
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
- Délégation à la Recherche Clinique et à l’Innovation, Groupement des Hôpitaux de l’Institut Catholique de Lille, F-59000 Lille, France
| | - Gilles Riveau
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
- Biomedical Research Center Espoir Pour La Santé (BRC-EPLS), BP 226 Saint-Louis, Senegal; (A.T.L.); (S.S.)
| | - Eric Viscogliosi
- Institut Pasteur de Lille, U1019–UMR 9017–CIIL–Centre d’Infection et d’Immunité de Lille, University of Lille, CNRS, Inserm, CHU Lille, F-59000 Lille, France; (S.K.); (N.G.); (E.D.); (R.D.); (M.S.); (M.B.); (S.B.-V.); (M.C.); (A.-M.S.); (G.C.); (G.R.)
- Correspondence:
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11
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Østergaard AS, Even G, Audebert C. Effects of cold shock and warming rate on boar sperm. Theriogenology 2019. [DOI: 10.1016/j.theriogenology.2019.05.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Syvannarath V, Di Carlo S, Even G, Gachet B, Nicoletti A, Caligiuri G. P4618Lack of CD31 results in microvascular plugging and increased infarction size in an experimental model of myocardial ischemia-reperfusion injury. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.1000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The success of coronary recanalization therapy for the treatment of myocardial infarction can be hampered by microvascular plugging which prevents effective reperfusion of the ischemic tissue. Due to its constitutive expression in platelets, leukocytes, and endothelial cells and its peculiar tyrosine phosphatase cell detaching signaling properties, the trans-homophilic CD31 receptor may be important to modulate platelet and leukocyte aggregation in the microvasculature.
Objective
To investigate the impact of CD31 genetic deficiency on the infarct size, peri-infarction microvascular plugging and macrophage phenotype in a mouse model of heart ischemia/reperfusion.
Methods
Cardiac ischemia was induced in WT and CD31 KO mice (n=30, 15 females and 15 males in each group) by surgical ligation of the left anterior descending coronary artery (LAD) for 45 minutes followed by reperfusion for 72 hours. The area at risk (AAR) and necrotic zone (NZ) were assessed using ImageJ software on three consecutive 1 mm thick slices of the left ventricle (LV) by a combination of a blue dye and 2,3,5-triphenyltetrazolium chloride staining. Parallel sets of experiments served to evaluate by both fluorescence microscopy and cytometry the presence of microvascular plugs and leukocyte phenotype in the infarction area as compared to the peri-necrotic myocardium.
Results
The AAR was similar in WT and CD31 KO mice (41,7±3,5 vs 37±2,9% of LV, NS) whereas the size of myocardial infarction was significantly greater in CD31 KO as compared to WT mice (23,4±2 vs 17,8±1,7% of LV, p<0,05). Immunofluorescent microscopy showed a dramatic increase in microvascular platelets-rich plugs around the infarction in CD31 KO mice (Figure), confirmed by cytometry analysis (9749±573 vs 5976±376 platelet-leukocyte aggregates/mg of tissue, p<0.001). Furthermore, we found that the ratio between M1 and M2 type macrophages in the peri-infarction myocardium was significantly increased in CD31 KO mice (0,7±0.07) as compared to WT mice (0,4±0.06, p<0,01).
Conclusions
Our data suggest that CD31 is important for reducing the size of necrosis following coronary recanalization procedures by preventing the no-reflow phenomenon due to microvascular plugging and by promoting a reparative phenotype of peri-infarction macrophages.
Acknowledgement/Funding
Institut Servier - ANRT (CIFRE doctoral grant)
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Affiliation(s)
- V Syvannarath
- National Institute of Health and Medical Research (INSERM home), Paris, France
| | | | - G Even
- National Institute of Health and Medical Research (INSERM home), Paris, France
| | - B Gachet
- National Institute of Health and Medical Research (INSERM home), Paris, France
| | - A Nicoletti
- National Institute of Health and Medical Research (INSERM home), Paris, France
| | - G Caligiuri
- National Institute of Health and Medical Research (INSERM home), Paris, France
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Certad G, Follet J, Gantois N, Hammouma-Ghelboun O, Guyot K, Benamrouz-Vanneste S, Fréalle E, Seesao Y, Delaire B, Creusy C, Even G, Verrez-Bagnis V, Ryan U, Gay M, Aliouat-Denis C, Viscogliosi E. Prevalence, Molecular Identification, and Risk Factors for Cryptosporidium Infection in Edible Marine Fish: A Survey Across Sea Areas Surrounding France. Front Microbiol 2019; 10:1037. [PMID: 31156581 PMCID: PMC6530514 DOI: 10.3389/fmicb.2019.01037] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/24/2019] [Indexed: 12/19/2022] Open
Abstract
Cryptosporidium, a zoonotic pathogen, is able to infect a wide range of hosts including wild and domestic animals, and humans. Although it is well known that some parasites are both fish pathogens and recognized agents of zoonosis with a public health impact, little information is available concerning the prevalence of Cryptosporidium in wild aquatic environments. To evaluate the prevalence of Cryptosporidium spp. in commercially important edible marine fish in different European seas (English channel, North sea, Bay of Biscay, Celtic sea and Mediterranean sea), 1,853 specimens were collected as part of two surveys. Nested PCR followed by sequence analysis at the 18S rRNA gene locus was used to identify Cryptosporidium spp. The overall prevalence of Cryptosporidium spp. in sampled fish reached 2.3% (35 out of 1,508) in a first campaign and 3.2% (11 out of 345) in a second campaign. Sequence and phylogenetic analysis of positive samples identified Cryptosporidium parvum (n = 10) and seven genotypes which exhibited between 7.3 and 10.1% genetic distance from C. molnari, with the exception of one genotype which exhibited only 0.5–0.7% genetic distance from C. molnari. Among 31 analyzed fish species, 11 (35.5%) were identified as potential hosts for Cryptosporidium. A higher prevalence of Cryptosporidium spp. was observed in larger fish, in fish collected during the spring-summer period, and in those caught in the North East Atlantic. Pollachius virens (saithe) was the most frequently Cryptosporidium positive species. In fish infected by other parasites, the risk of being Cryptosporidium positive increased 10-fold (OR: 9.95, CI: 2.32–40.01.04, P = 0.0002). Four gp60 subtypes were detected among the C. parvum positive samples: IIaA13G1R1, IIaA15G2R1, IIaA17G2R1, and IIaA18G3R1. These C. parvum subtypes have been previously detected in terrestrial mammals and may constitute an additional source of infection for other animals and in particular for humans. Microscopical examination of histological sections confirmed the presence of round bodies suggestive of the development of C. parvum within digestive glands. We report herein the first epidemiological and molecular data concerning the detection of Cryptosporidium in edible marine fish in European seas surrounding France broadening its host range and uncovering potential novel infection routes.
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Affiliation(s)
- Gabriela Certad
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France.,Délégation à la Recherche Clinique et à l'innovation, Groupement des Hôpitaux de l'Institut Catholique de Lille, Lille, France
| | - Jérôme Follet
- ISA-YNCREA Hauts-de-France, Lille, France.,CNRS, ISEN, UMR 8520 - IEMN, Université de Lille, Lille, France
| | - Nausicaa Gantois
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
| | | | - Karine Guyot
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
| | - Sadia Benamrouz-Vanneste
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France.,Laboratoire Ecologie et Biodiversité, Faculté de Gestion Economie et Sciences, Institut Catholique de Lille, Lille, France
| | - Emilie Fréalle
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
| | - Yuwalee Seesao
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
| | - Baptiste Delaire
- Service d'Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l'Institut Catholique de Lille, Lille, France
| | - Colette Creusy
- Service d'Anatomie et de Cytologie Pathologiques, Groupement des Hôpitaux de l'Institut Catholique de Lille, Lille, France
| | - Gaël Even
- Gènes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Véronique Verrez-Bagnis
- Ifremer, Laboratoire Ecosystèmes Microbiens et Molécules Marines pour les Biotechnologies, Nantes, France
| | - Una Ryan
- Centre for Sustainable Aquatic Ecosystems, College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Mélanie Gay
- Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Boulogne-sur-mer, France
| | - Cécile Aliouat-Denis
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
| | - Eric Viscogliosi
- CNRS, Inserm, CHU Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Université de Lille, Lille, France
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Bello-Gil D, Audebert C, Olivera-Ardid S, Pérez-Cruz M, Even G, Khasbiullina N, Gantois N, Shilova N, Merlin S, Costa C, Bovin N, Mañez R. The Formation of Glycan-Specific Natural Antibodies Repertoire in GalT-KO Mice Is Determined by Gut Microbiota. Front Immunol 2019; 10:342. [PMID: 30891034 PMCID: PMC6411795 DOI: 10.3389/fimmu.2019.00342] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/11/2019] [Indexed: 12/19/2022] Open
Abstract
Gut commensal bacteria are known to have a significant role in regulating the innate and adaptive immune homeostasis. Alterations in the intestinal microbial composition have been associated with several disease states, including autoimmune and inflammatory conditions. However, it is not entirely clear how commensal gut microbiota modulate and contribute to the systemic immunity, and whether circulating elements of the host immune system could regulate the microbiome. Thus, we have studied the diversity and abundance of specific taxons in the gut microbiota of inbred GalT-KO mice during 7 months of animal life by metagenetic high-throughput sequencing (16S rRNA gene, variable regions V3-V5). The repertoire of glycan-specific natural antibodies, obtained by printed glycan array technology, was then associated with the microbial diversity for each animal by metagenome-wide association studies (MWAS). Our data show that the orders clostridiales (most abundant), bacteriodales, lactobacillales, and deferribacterales may be associated with the development of the final repertoire of natural anti-glycan antibodies in GalT-KO mice. The main changes in microbiota diversity (month-2 and month-3) were related to important changes in levels and repertoire of natural anti-glycan antibodies in these mice. Additionally, significant positive and negative associations were found between the gut microbiota and the pattern of specific anti-glycan antibodies. Regarding individual features, the gut microbiota and the corresponding repertoire of natural anti-glycan antibodies showed differences among the examined animals. We also found redundancy in different taxa associated with the development of specific anti-glycan antibodies. Differences in microbial diversity did not, therefore, necessarily influence the overall functional output of the gut microbiome of GalT-KO mice. In summary, the repertoire of natural anti-carbohydrate antibodies may be partially determined by the continuous antigenic stimulation produced by the gut bacterial population of each GalT-KO mouse. Small differences in gut microbiota diversity could determine different repertoire and levels of natural anti-glycan antibodies and consequently might induce different immune responses to pathogens or other potential threats.
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Affiliation(s)
- Daniel Bello-Gil
- Infectious Pathology and Transplantation Division, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Christophe Audebert
- Genes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Sara Olivera-Ardid
- Infectious Pathology and Transplantation Division, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Magdiel Pérez-Cruz
- CNRS, INSERM, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Université de Lille, Lille, France
| | - Gaël Even
- Genes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | | | - Nausicaa Gantois
- Lille University, CNRS, Inserm, Lille University Hospital, Pasteur Institute of Lille, U1019 -UMR 8204 -CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - Nadezhda Shilova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Sophie Merlin
- Genes Diffusion, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Cristina Costa
- Infectious Pathology and Transplantation Division, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain
| | - Nicolai Bovin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Rafael Mañez
- Infectious Pathology and Transplantation Division, Institut d'Investigació Biomèdica de Bellvitge, Barcelona, Spain.,Intensive Care Department, Bellvitge University Hospital, Barcelona, Spain
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15
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Cortese J, Rasser C, Even G, Choqueux C, Bardet S, Janot K, Caroff J, Spelle L, Caligiuri G, Rouchaud A. Optimisation de la biocompatibilité des stents flow-diverters par greffage du P8RI pour le traitement des anévrismes intracrâniens. J Neuroradiol 2019. [DOI: 10.1016/j.neurad.2019.01.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Mesnier J, Sayah N, Rasser C, Choqueux C, Even G, Feldman LJ, Nicoletti A, Gallet R, Galeh B, Caligiuri G. P4593Stent coating with a CD31-mimetic peptide allows effective endothelialization while reducing local thrombosis and inflammation in pig coronary arteries in vivo. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - N Sayah
- INSERM, U1148, Paris, France
| | | | | | - G Even
- INSERM, U1148, Paris, France
| | - L J Feldman
- Hospital Bichat-Claude Bernard, Cardiology, Paris, France
| | | | - R Gallet
- Mondor Biomedical Research Institute, Creteil, France
| | - B Galeh
- Mondor Biomedical Research Institute, Creteil, France
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17
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Even G, Kiss M, Laschet J, Ozvar Kozma M, Simon T, Wigren M, Gaston A, Procopio E, Le Borgne-Moynnier M, Nilsson J, Kuiper J, Nicoletti A, Binder C, Caligiuri G. Vaccination with Prevenar® boosts the production of anti-phosphorylcholine antibodies and protects APOE knockout mice from atherosclerosis. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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18
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Syvannarath V, Morvan M, Even G, Franck G, Deschildre C, Deschamps L, Nataf P, Michel JB, Nicoletti A, Caligiuri G. P125Lack of neuregulin-1 expression is associated with CD31 shedding on cardiac microvascular endothelial cells of patients suffering from post-ischemic heart failure. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - G Even
- INSERM, U1148, Paris, France
| | | | | | - L Deschamps
- Hospital Bichat-Claude Bernard, Patholgy, Paris, France
| | - P Nataf
- Hospital Bichat-Claude Bernard, Cardiac Surgery, Paris, France
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19
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Sannier A, Stroumza N, Caligiuri G, Le Borgne-Moynier M, Andreata F, Senemaud J, Louedec L, Even G, Gaston AT, Deschildre C, Couvelard A, Ou P, Cheynier R, Nataf P, Dorent R, Nicoletti A. Thymic function is a major determinant of onset of antibody-mediated rejection in heart transplantation. Am J Transplant 2018; 18:964-971. [PMID: 29160947 DOI: 10.1111/ajt.14595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/20/2017] [Accepted: 11/05/2017] [Indexed: 01/25/2023]
Abstract
Thymic function decreases progressively with age but may be boosted in certain circumstances. We questioned whether heart transplantation was such a situation and whether thymic function was related to the onset of rejection. Twenty-eight antithymocyte globulin-treated heart transplant recipients were included. Patients diagnosed for an antibody-mediated rejection on endomyocardial biopsy had a higher proportion of circulating recent thymic emigrant CD4+ T cells and T cell receptor excision circle levels than other transplanted subjects. Thymus volume and density, assessed by computed tomography in a subset of patients, was also higher in patients experiencing antibody-mediated rejection. We demonstrate that thymic function is a major determinant of onset of antibody-mediated rejection and question whether thymectomy could be a prophylactic strategy to prevent alloimmune humoral responses.
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Affiliation(s)
- A Sannier
- INSERM U1148, Paris, France.,Denis Diderot University, Paris, France.,Department of Pathology, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | | | | | | | | | | | - G Even
- INSERM U1148, Paris, France
| | | | | | - A Couvelard
- Denis Diderot University, Paris, France.,Department of Pathology, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - P Ou
- INSERM U1148, Paris, France.,Denis Diderot University, Paris, France.,Department of Radiology, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - R Cheynier
- INSERM U1016, Cochin Institute, Paris, France
| | - P Nataf
- INSERM U1148, Paris, France.,Denis Diderot University, Paris, France.,Department of Cardiac Surgery, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - R Dorent
- INSERM U1148, Paris, France.,Department of Cardiac Surgery, Bichat Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - A Nicoletti
- INSERM U1148, Paris, France.,Denis Diderot University, Paris, France
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20
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Syvannarath V, Delbosc S, Escoubet B, Le Borgne-Moynnier M, Laschet J, Morvan M, Even G, Journee C, Nicoletti A, Caligiuri G. Treatment with a CD31 agonist peptide improves the outcome of experimental heart failure with either reduced or preserved ejection fraction. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2018.02.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Syvannarath V, Delbosc S, Escoubet B, Le Borgne-Moynier M, Khallou-Laschet J, Morvan M, Even G, Journee C, Nicoletti A, Caligiuri G. P126The administration of a CD31 agonist peptide exerts a beneficial effect in experimental heart failure with both reduced and preserved ejection fraction. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - B Escoubet
- Hospital Bichat-Claude Bernard, Physiology, Paris, France
| | | | | | | | - G Even
- INSERM, U1148, Paris, France
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22
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Delbosc S, Guedj K, Even G, Laschet-Khallou J, Gaston AT, Nicoletti A, Caligiuri G. P148Porphyromonas gingivalis bacteremia impairs arterial healing process in an experimental model of dissecting aneurysm. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | | | - G Even
- u1148-LVTS, Paris, France
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23
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Caboche S, Even G, Loywick A, Audebert C, Hot D. MICRA: an automatic pipeline for fast characterization of microbial genomes from high-throughput sequencing data. Genome Biol 2017; 18:233. [PMID: 29258574 PMCID: PMC5738152 DOI: 10.1186/s13059-017-1367-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/30/2017] [Indexed: 12/15/2022] Open
Abstract
The increase in available sequence data has advanced the field of microbiology; however, making sense of these data without bioinformatics skills is still problematic. We describe MICRA, an automatic pipeline, available as a web interface, for microbial identification and characterization through reads analysis. MICRA uses iterative mapping against reference genomes to identify genes and variations. Additional modules allow prediction of antibiotic susceptibility and resistance and comparing the results of several samples. MICRA is fast, producing few false-positive annotations and variant calls compared to current methods, making it a tool of great interest for fully exploiting sequencing data.
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Affiliation(s)
- Ségolène Caboche
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France. .,PEGASE-Biosciences, Institut Pasteur de Lille, 1 Rue du Professeur Calmette, 59019, Lille, France.
| | - Gaël Even
- Genes Diffusion, 3595, Route de Tournai, 59501, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, 1 Rue du Professeur Calmette, 59019, Lille, France
| | - Alexandre Loywick
- Genes Diffusion, 3595, Route de Tournai, 59501, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, 1 Rue du Professeur Calmette, 59019, Lille, France
| | - Christophe Audebert
- Genes Diffusion, 3595, Route de Tournai, 59501, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, 1 Rue du Professeur Calmette, 59019, Lille, France
| | - David Hot
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France.,PEGASE-Biosciences, Institut Pasteur de Lille, 1 Rue du Professeur Calmette, 59019, Lille, France
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24
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Siegwald L, Audebert C, Even G, Viscogliosi E, Caboche S, Chabé M. Targeted metagenomic sequencing data of human gut microbiota associated with Blastocystis colonization. Sci Data 2017; 4:170081. [PMID: 28654083 PMCID: PMC5486356 DOI: 10.1038/sdata.2017.81] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 05/19/2017] [Indexed: 01/27/2023] Open
Abstract
In the past decade, metagenomics studies have become widespread due to the arrival of second-generation sequencing platforms characterized by low costs, high throughput and short read lengths. Today, although benchtop sequencers are considered to be accurate platforms to deliver data for targeted metagenomics studies, the limiting factor has become the analysis of these data. In a previous paper, we performed an Ion Torrent PGM 16S rDNA gene sequencing of faecal DNAs from 48 Blastocystis-colonized patients and 48 Blastocystis-negative subjects, in order to decipher the impact of this widespread protist on gut microbiota composition and diversity. We report here on the Ion Torrent targeted metagenomic sequencing and analysis of these 96 human faecal samples, and the complete datasets from raw to analysed data. We also provide the key steps of the bioinformatic analyses, from library preparation to data filtering and OTUs tables generation. This data represents a valuable resource for the scientific community, enabling re-processing of these targeted metagenomic datasets through various pipelines and a comparative evaluation of microbiota analysis methods.
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Affiliation(s)
- Léa Siegwald
- GENES DIFFUSION, Douai 59501, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille 59019, France.,CRIStAL (UMR CNRS 9189 Université de Lille, Centre de Recherche en Informatique, Signal et Automatique de Lille) &Inria, Villeneuve d'Ascq 59655, France.,Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille 59019, France
| | - Christophe Audebert
- GENES DIFFUSION, Douai 59501, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille 59019, France
| | - Gaël Even
- GENES DIFFUSION, Douai 59501, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille 59019, France
| | - Eric Viscogliosi
- Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille 59019, France
| | - Ségolène Caboche
- PEGASE-Biosciences, Institut Pasteur de Lille, Lille 59019, France.,Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille 59019, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille 59019, France
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Cattan Levy L, Jacob-Lenet M, Dehoux M, Deschildre C, Codogno I, Morvan M, Gaston A, Even G, Michel J, Messika-Zeitoun D, Nicoletti A, Caligiuri G, Laschet J. Plasma from patients with calcified aortic disease triggers an osteoblast-like phenotype switch in human aortic valve interstitial cells. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30288-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Cattan-Lévy L, Jacob-Lenet M, Dehoux M, Deschildre C, Codogno I, Morvan M, Gaston A, Even G, Michel J, Messika-Zeitoun D, Nicoletti A, Caligiuri G, Khallou-Laschet J. Plasma from patients with calcified aortic disease triggers an osteoblast-like phenotype switch in human aortic valve interstitial cells. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Martínez RA, Dassonneville R, Bejarano D, Jimenez A, Even G, Mészáros G, Sölkner J. Direct and maternal genetic effects on growth, reproduction, and ultrasound traits in zebu Brahman cattle in Colombia1. J Anim Sci 2016; 94:2761-9. [DOI: 10.2527/jas.2016-0453] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Audebert C, Even G, Cian A, Loywick A, Merlin S, Viscogliosi E, Chabé M. Colonization with the enteric protozoa Blastocystis is associated with increased diversity of human gut bacterial microbiota. Sci Rep 2016; 6:25255. [PMID: 27147260 PMCID: PMC4857090 DOI: 10.1038/srep25255] [Citation(s) in RCA: 174] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/13/2016] [Indexed: 12/16/2022] Open
Abstract
Alterations in the composition of commensal bacterial populations, a phenomenon known as dysbiosis, are linked to multiple gastrointestinal disorders, such as inflammatory bowel disease and irritable bowel syndrome, or to infections by diverse enteric pathogens. Blastocystis is one of the most common single-celled eukaryotes detected in human faecal samples. However, the clinical significance of this widespread colonization remains unclear, and its pathogenic potential is controversial. To address the issue of Blastocystis pathogenicity, we investigated the impact of colonization by this protist on the composition of the human gut microbiota. For that purpose, we conducted a cross-sectional study including 48 Blastocystis-colonized patients and 48 Blastocystis-free subjects and performed an Ion Torrent 16S rDNA gene sequencing to decipher the Blastocystis-associated gut microbiota. Here, we report a higher bacterial diversity in faecal microbiota of Blastocystis colonized patients, a higher abundance of Clostridia as well as a lower abundance of Enterobacteriaceae. Our results contribute to suggesting that Blastocystis colonization is usually associated with a healthy gut microbiota, rather than with gut dysbiosis generally observed in metabolic or infectious inflammatory diseases of the lower gastrointestinal tract.
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Affiliation(s)
- Christophe Audebert
- GENES DIFFUSION, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Gaël Even
- GENES DIFFUSION, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Amandine Cian
- Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | | | - Alexandre Loywick
- GENES DIFFUSION, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Sophie Merlin
- GENES DIFFUSION, Douai, France.,PEGASE-Biosciences, Institut Pasteur de Lille, Lille, France
| | - Eric Viscogliosi
- Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Magali Chabé
- Univ. Lille, CNRS, Inserm, CHU de Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Center for Infection and Immunity of Lille, Lille, France
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Chabé M, Khalife S, Gantois N, Even G, Audebert C. An improved single-round PCR leads to rapid and highly sensitive detection of Pneumocystis spp. Med Mycol 2014; 52:841-6. [DOI: 10.1093/mmy/myu032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rougeron C, Boinnard C, Djebbabi M, Even G, Jacquier C, LerouX K, Neuhoff C, Perrette S, Thierry P. Une cellule dédiée à la prévention et la gestion des risques psychosociaux dans un service interentreprises de santé au travail. ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.03.725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Živičnjak M, Schnabel D, Staude H, Even G, Marx M, Beetz R, Holder M, Billing H, Fischer DC, Rabl W, Schumacher M, Hiort O, Haffner D. Three-year growth hormone treatment in short children with X-linked hypophosphatemic rickets: effects on linear growth and body disproportion. J Clin Endocrinol Metab 2011; 96:E2097-105. [PMID: 21994957 DOI: 10.1210/jc.2011-0399] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Children with X-linked hypophosphatemic rickets (XLH) are prone to progressive disproportionate stunting despite oral phosphate and vitamin D treatment. OBJECTIVE Our objective was to analyze the effects of GH treatment on stature and lengths of linear body segments in short children with XLH. DESIGN, SETTINGS, AND PATIENTS A 3-yr randomized controlled open-label GH study in short prepubertal children with XLH (n = 16) on phosphate and calcitriol treatment was conducted. A cohort of XLH patients (n = 76) on conservative treatment served as an XLH reference population. MAIN OUTCOME MEASURES Changes in SD scores (SDS) of stature and linear body segments, i.e. sitting height, leg and arm length, and sitting height index (i.e. ratio between sitting height and stature) were the main outcome measures. RESULTS XLH patients presented at time of enrollment with significant impairments of stature (-3.3 SDS) and linear body segments compared with healthy children. Leg length (-3.8 SDS) was most impaired, whereas sitting height (-1.7 SDS) was best preserved. The markedly elevated mean sitting height index (+3.3 SDS) reflected severe body disproportion. GH resulted in a sustained increase in linear growth (stature, +1.1 SDS; sitting height, +1.3 SDS; leg length, +0.8 SDS; arm length, +1.1 SDS; each P < 0.05 vs. baseline), whereas no significant changes were observed in controls. Mean height SDS at 3 yr did not significantly differ between groups. Sitting height index remained stable in both the GH-treated patients and in study controls but increased further in the XLH-reference population. CONCLUSIONS The 3-yr GH treatment improved linear growth without progression of body disproportion in short children with XLH.
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Affiliation(s)
- M Živičnjak
- Department of Pediatric Kidney, Liver, and Metabolic Diseases, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany.
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Abstract
AIM Ophthalmological complications with interferon alpha (INF-alpha) have been described since 1992: toxic retinopathy with cotton-wool spots, retinal hemorrhages, visual evoked potential (VEP) modifications and visual field abnormalities. MATERIAL AND METHOD In 2002, a 44-year-old woman was referred complaining of visual problems. In 1986, she had been diagnosed with chronic hepatitis C and underwent INF-alpha therapy for 6 months with no ophthalmological symptoms. In 2001, she began a second course of INF-alpha therapy along with ribavirin. After 5 months, in February 2002, she developed hypothyroidism induced by INF, received levothyroxine and her treatment for the hepatitis C was stopped. One month later, in March, she complained of visual difficulties in dim light. Clinical ophthalmological examination and Goldmann visual field testing, electroretinogram (ERG) and visual evoked potentials (VEP) were normal but the electro-oculogram (EOG) showed that the light-peak-to-dark-trough ratios were very low: 148% in the right eye, 156% in the left eye. The fluorescein angiography was normal. The patient was followed up 4 months later, in June 2002 (after 5 months without INF-alpha therapy), showing a slight improvement of the EOG and no visual symptoms. Two other follow-up examinations were done in September 2002 and January 2003: the slight improvement persisted but the EOGs remain below the normal range values. DISCUSSION AND CONCLUSION A review of the literature brought out that an EOG is not usually done in the monitoring of patients taking INF-alpha, but we decided to do this examination because of her symptoms, the first case to our knowledge in a patient taking INF-alpha. This case report underlines the necessity of an EOG on patients with INF-alpha therapy. Until now, the pathogenesis of this retinal toxicity has been poorly understood. These results show that the retinal pigmented epithelium is probably implicated at an early stage in this retinal toxicity.
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Seewi O, Even G, Schönau E. Metformin zur Behandlung des primär nicht insulinpflichtigen Diabetes mellitus bei adipösen Jugendlichen. Monatsschr Kinderheilkd 2002. [DOI: 10.1007/s00112-001-0347-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wendel U, Even G, Langenbeck U, Schadewaldt P, Hummel W. Determination of (S)- and (R)-2-oxo-3-methylvaleric acid in plasma of patients with maple syrup urine disease. Clin Chim Acta 1992; 208:85-91. [PMID: 1638756 DOI: 10.1016/0009-8981(92)90024-k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An enzymatic method for the separate measurement of both chiral 2-oxo-3-methylvaleric acid (OMV) compounds, (S)- and (R)-OMV, by NADH-dependent enantioselective amination using leucine dehydrogenase in the presence of a NADH regenerating system is described. This method allows the quantitative determination of all branched-chain 2-oxo acids, simultaneously. In plasma samples from classical maple syrup urine disease patients under therapy the average (R)-OMV/(S)-OMV ratio was 0.35 and great differences in the transamination equilibria of the diastereomeric branched-chain amino acids L-isoleucine and L-alloisoleucine were demonstrated.
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Affiliation(s)
- U Wendel
- Kinderklinik, Heinrich-Heine-Universität, Düsseldorf, FRG
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Kovalivker M, Erez I, Even G, Motovic A. [Segmental absence of small bowel muscular layer]. Harefuah 1988; 114:275-7. [PMID: 3371777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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