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description Publicationkeyboard_double_arrow_right Article , Conference object 2014 FrancePublisher:Oxford University Press (OUP) Ileana Desormais; Victor Aboyans; Maëlenn Guerchet; Bébène Ndamba-Bandzouzi; Pascal M'Belesso; Thierry Dantoine; Dania Mohty; Benoît Marin; Pierre-Marie Preux; Philippe Lacroix;pmid: 25376847
International audience; Data on peripheral artery disease in Africa are sparse and limited to urban areas. Given the urban/rural socio-economical gradient in these countries, we sought to determine the prevalence and risk factors of peripheral artery disease in urban and rural areas of two countries in Central Africa. Individuals ≥65 years old living in two urban and rural areas of the Republic of Central Africa (ROC) and the Central African Republic (CAR) were invited. Demographic, clinical and biological data were collected. Ankle-brachial index ≤0.90 defined peripheral artery disease. Among the 1871 participants (age 73 years, 62% female) the prevalence of peripheral artery disease was 14.8%, higher in ROC than in CAR (17.4% vs. 12.2%, p = 0.007) and higher in females than males (16.6% vs. 11.9%, p = 0.012). The prevalence of peripheral artery disease increased with age, respectively at 10.9%, 14.9%, 15.1% and 22.2% for age bands of 65-69, 70-74, 75-79 and 80+years (p < 0.001). Higher rates of peripheral artery disease were found in urban areas in ROC (20.7% vs. 14.4% in rural areas, p = 0.011), but not in CAR (11.5% vs. 12.9%, p = NS). In multivariate analysis, peripheral artery disease was significantly associated with age (odds ratio (OR): 1.03; p = 0.004), dyslipidaemia (OR: 1.88; p = 0.003), smoking (OR: 1.78; p = 0.003), obesity (OR: 1.98; p = 0.034) and underweight (OR: 1.49; p = 0.023). Regular alcohol drinking was associated with decreased risk of peripheral artery disease (OR: 0.73; p = 0.044). The prevalence of peripheral artery disease in the elderly is high in Africa, especially in females. In ROC, with a higher urban-rural socio-economic gradient, peripheral artery disease is more frequent in the urban areas.
European Journal of ... arrow_drop_down European Journal of Preventive CardiologyArticle . 2014 . Peer-reviewedLicense: SAGE TDMData sources: CrossrefHyper Article en Ligne; Hal-DiderotOther literature type . Conference object . 2015Mémoires en Sciences de l'Information et de la CommunicationConference object . 2015Hyper Article en Ligne; Hal-DiderotOther literature type . Article . 2015add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1177/2047487314557945&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 32 citations 32 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert European Journal of ... arrow_drop_down European Journal of Preventive CardiologyArticle . 2014 . Peer-reviewedLicense: SAGE TDMData sources: CrossrefHyper Article en Ligne; Hal-DiderotOther literature type . Conference object . 2015Mémoires en Sciences de l'Information et de la CommunicationConference object . 2015Hyper Article en Ligne; Hal-DiderotOther literature type . Article . 2015add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1177/2047487314557945&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2008 France EnglishThongo M'Bou, Armel; Jourdan, Christophe; Deleporte, Philippe; Nouvellon, Yann; Saint-André, Laurent; Bouillet, Jean-Pierre; Mialoundama, Fidèle; Mabiala, André; Epron, Daniel;La question de la durabilité des plantations d’Eucalyptus est souvent posée dans les environnements où les ressources sont limitées, en particulier les zones où les sols ont une faible capacité à retenir l’eau et les nutriments et où la saison sèche est longue. Pourtant, les observations in situ de la dynamique racinaire en relation avec la saisonnalité des pluies sont inexistantes. Cette étude a été réalisée dans deux plantations d’Eucalyptus de la région du Kouilou dans le sud ouest du Congo, qui est caractérisée par quatre mois de saison sèche. La dynamique des racines fines (moins de 2 mm de diamètre) a été étudiée à l’aide de rhizotrons permettant d’observer l’élongation racinaire au champ. La vitesse d’élongation des racines fines montrait une variation saisonnière dans les deux plantations, avec des vitesses plus élevées en saison des pluies qu’en saison sèche. Des corrélations positives et significatives ont été trouvées entre la vitesse d’élongation des racines fines et la teneur en eau du sol à toutes les profondeurs, mais les meilleures corrélations ont été observées avec la teneur en eau des horizons profonds. Cela suggère que les variations temporelles de l’élongation des racines fines sont reliées à la saisonnalité des précipitations, et qu’elles sont associées aux changements saisonniers d’état hydrique des arbres, d’assimilation carbonée et d’allocation vers les parties souterraines. Sustainability of Eucalyptus plantations is often questioned in resource-limited environments, especially in areas characterized by soils with poor nutrient and water holding capacities. Yet, field-based observations of fine root dynamics in relation with the seasonality of rainfall are lacking. This study was undertaken on two Eucalyptus stands planted in the Kouilou Region (south-western Congo), which is characterized by a four-monthlong dry season. Fine root (less than 2 mm in diameter) dynamics were studied using rhizotron observations of root elongation in the field. Fine root elongation rates displayed a seasonal variation in the two stands, with higher elongation rates during the rainy season than during the dry season. Positive and significant correlations were found between fine root elongation rates and soil water content at all depths, but a better correlation was found with soil water content in the deep soil horizon than in the superficial horizons. These results suggest that the temporal variations in fine root elongation were related to the seasonality of rainfall, and they were probably associate with seasonal changes in tree water status, carbon assimilation and belowground allocation.
ProdInra arrow_drop_down Hal-DiderotArticle . 2008Full-Text: https://hal.inrae.fr/hal-02667371/documentData sources: Hal-DiderotMémoires en Sciences de l'Information et de la CommunicationArticle . 2008Full-Text: https://hal.science/hal-00883431/documentAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1582::2c5de17af1c677baf058263340f43f54&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ProdInra arrow_drop_down Hal-DiderotArticle . 2008Full-Text: https://hal.inrae.fr/hal-02667371/documentData sources: Hal-DiderotMémoires en Sciences de l'Information et de la CommunicationArticle . 2008Full-Text: https://hal.science/hal-00883431/documentAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1582::2c5de17af1c677baf058263340f43f54&type=result"></script>'); --> </script>
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description Publicationkeyboard_double_arrow_right Article , Conference object 2014 FrancePublisher:Oxford University Press (OUP) Ileana Desormais; Victor Aboyans; Maëlenn Guerchet; Bébène Ndamba-Bandzouzi; Pascal M'Belesso; Thierry Dantoine; Dania Mohty; Benoît Marin; Pierre-Marie Preux; Philippe Lacroix;pmid: 25376847
International audience; Data on peripheral artery disease in Africa are sparse and limited to urban areas. Given the urban/rural socio-economical gradient in these countries, we sought to determine the prevalence and risk factors of peripheral artery disease in urban and rural areas of two countries in Central Africa. Individuals ≥65 years old living in two urban and rural areas of the Republic of Central Africa (ROC) and the Central African Republic (CAR) were invited. Demographic, clinical and biological data were collected. Ankle-brachial index ≤0.90 defined peripheral artery disease. Among the 1871 participants (age 73 years, 62% female) the prevalence of peripheral artery disease was 14.8%, higher in ROC than in CAR (17.4% vs. 12.2%, p = 0.007) and higher in females than males (16.6% vs. 11.9%, p = 0.012). The prevalence of peripheral artery disease increased with age, respectively at 10.9%, 14.9%, 15.1% and 22.2% for age bands of 65-69, 70-74, 75-79 and 80+years (p < 0.001). Higher rates of peripheral artery disease were found in urban areas in ROC (20.7% vs. 14.4% in rural areas, p = 0.011), but not in CAR (11.5% vs. 12.9%, p = NS). In multivariate analysis, peripheral artery disease was significantly associated with age (odds ratio (OR): 1.03; p = 0.004), dyslipidaemia (OR: 1.88; p = 0.003), smoking (OR: 1.78; p = 0.003), obesity (OR: 1.98; p = 0.034) and underweight (OR: 1.49; p = 0.023). Regular alcohol drinking was associated with decreased risk of peripheral artery disease (OR: 0.73; p = 0.044). The prevalence of peripheral artery disease in the elderly is high in Africa, especially in females. In ROC, with a higher urban-rural socio-economic gradient, peripheral artery disease is more frequent in the urban areas.
European Journal of ... arrow_drop_down European Journal of Preventive CardiologyArticle . 2014 . Peer-reviewedLicense: SAGE TDMData sources: CrossrefHyper Article en Ligne; Hal-DiderotOther literature type . Conference object . 2015Mémoires en Sciences de l'Information et de la CommunicationConference object . 2015Hyper Article en Ligne; Hal-DiderotOther literature type . Article . 2015add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1177/2047487314557945&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 32 citations 32 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert European Journal of ... arrow_drop_down European Journal of Preventive CardiologyArticle . 2014 . Peer-reviewedLicense: SAGE TDMData sources: CrossrefHyper Article en Ligne; Hal-DiderotOther literature type . Conference object . 2015Mémoires en Sciences de l'Information et de la CommunicationConference object . 2015Hyper Article en Ligne; Hal-DiderotOther literature type . Article . 2015add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1177/2047487314557945&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2008 France EnglishThongo M'Bou, Armel; Jourdan, Christophe; Deleporte, Philippe; Nouvellon, Yann; Saint-André, Laurent; Bouillet, Jean-Pierre; Mialoundama, Fidèle; Mabiala, André; Epron, Daniel;La question de la durabilité des plantations d’Eucalyptus est souvent posée dans les environnements où les ressources sont limitées, en particulier les zones où les sols ont une faible capacité à retenir l’eau et les nutriments et où la saison sèche est longue. Pourtant, les observations in situ de la dynamique racinaire en relation avec la saisonnalité des pluies sont inexistantes. Cette étude a été réalisée dans deux plantations d’Eucalyptus de la région du Kouilou dans le sud ouest du Congo, qui est caractérisée par quatre mois de saison sèche. La dynamique des racines fines (moins de 2 mm de diamètre) a été étudiée à l’aide de rhizotrons permettant d’observer l’élongation racinaire au champ. La vitesse d’élongation des racines fines montrait une variation saisonnière dans les deux plantations, avec des vitesses plus élevées en saison des pluies qu’en saison sèche. Des corrélations positives et significatives ont été trouvées entre la vitesse d’élongation des racines fines et la teneur en eau du sol à toutes les profondeurs, mais les meilleures corrélations ont été observées avec la teneur en eau des horizons profonds. Cela suggère que les variations temporelles de l’élongation des racines fines sont reliées à la saisonnalité des précipitations, et qu’elles sont associées aux changements saisonniers d’état hydrique des arbres, d’assimilation carbonée et d’allocation vers les parties souterraines. Sustainability of Eucalyptus plantations is often questioned in resource-limited environments, especially in areas characterized by soils with poor nutrient and water holding capacities. Yet, field-based observations of fine root dynamics in relation with the seasonality of rainfall are lacking. This study was undertaken on two Eucalyptus stands planted in the Kouilou Region (south-western Congo), which is characterized by a four-monthlong dry season. Fine root (less than 2 mm in diameter) dynamics were studied using rhizotron observations of root elongation in the field. Fine root elongation rates displayed a seasonal variation in the two stands, with higher elongation rates during the rainy season than during the dry season. Positive and significant correlations were found between fine root elongation rates and soil water content at all depths, but a better correlation was found with soil water content in the deep soil horizon than in the superficial horizons. These results suggest that the temporal variations in fine root elongation were related to the seasonality of rainfall, and they were probably associate with seasonal changes in tree water status, carbon assimilation and belowground allocation.
ProdInra arrow_drop_down Hal-DiderotArticle . 2008Full-Text: https://hal.inrae.fr/hal-02667371/documentData sources: Hal-DiderotMémoires en Sciences de l'Information et de la CommunicationArticle . 2008Full-Text: https://hal.science/hal-00883431/documentAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1582::2c5de17af1c677baf058263340f43f54&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert ProdInra arrow_drop_down Hal-DiderotArticle . 2008Full-Text: https://hal.inrae.fr/hal-02667371/documentData sources: Hal-DiderotMémoires en Sciences de l'Information et de la CommunicationArticle . 2008Full-Text: https://hal.science/hal-00883431/documentAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=od______1582::2c5de17af1c677baf058263340f43f54&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu