Review
Public, Environmental & Occupational Health
Mathieu Nacher, Flavia Divino, Cyril Leborgne, Valmir Correa, Sebastien Rabier, Aude Lucarelli, Sophie Rhodes, Melanie Gaillet, Dorinaldo Malafaia, Cyril Rousseau, Alice Sanna, Margarete Gomes, Antoine Adenis, Paulo Peiter, Celine Michaud
Summary: The border between the State of Amapa, Brazil, and French Guiana is mostly primary forest. The region experiences sex work, gold mining, and sexually transmitted infections due to socioeconomic circumstances. This study aims to provide comprehensive data on the sexually transmitted infections in this border area and describe the testing and care activity.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Infectious Diseases
Nicholas J. Arisco, Cassio Peterka, Marcia C. Castro
Summary: Cross-border malaria along the Venezuela-Brazil-Guyana border has been fueled by intense human mobility primarily driven by a humanitarian crisis and illegal gold mining activities. Analysis of malaria cases in Northern Brazil from 2007 to 2018 revealed that individuals from Venezuela and Guyana accounted for the majority of cross-border cases, with Roraima being the primary state receiving these cases. Logistic regression results indicated that Venezuelan and Guyanese nationals, Brazilian miners, males, and working age individuals had higher odds of being imported cases.
Review
Medicine, General & Internal
Mathieu Nacher, Aylosius Koendjbiharie, Celine Michaud, Sebastien Rabier, Cyril Leborgne, Cyril Rousseau, Aude Lucarelli, Camille Thorey, Adriana Gonzales, Fredrik Terlutter, Nadia Thomas, Benoit Van Gastel, Sophie Biacabe, Marja Van Eer, Stephen Vreden, Najeh Hcini, Lycke Woittiez
Summary: The Maroni basin, which forms the border between Suriname and French Guiana, has sociocultural, geographical, and economic factors that contribute to the transmission of sexually transmitted infections and delays in diagnosis and treatment. This study aimed to describe the different sexually transmitted infections in the Maroni basin and gain a better understanding of the epidemiological situation. The findings suggest that sexually transmitted infections are more prevalent in the urban center of Saint Laurent du Maroni compared to the remote villages along the Maroni. The study emphasizes the need for a coordinated approach and improved diagnostic methods to reduce the burden of sexually transmitted infections in this region.
FRONTIERS IN MEDICINE
(2022)
Article
Infectious Diseases
Maylis Douine, Hedley Cairo, Muriel Suzanne Galindo, Stephen Vreden, Yann Lambert, Antoine Adenis, Irene Jimeno, Martha Suarez-Mutis, Alice Sanna, Helene Hiwat
Summary: Scaling-up the distribution of self-diagnosis and self-treatment kits (Malakits) to control malaria in mobile and hard-to-reach populations faced challenges including limited human resources, declining economy, and logistical issues. However, with the commitment of stakeholders in Suriname and French Guiana, the integration of Malakit distribution into the Surinamese national programme was successfully achieved after a 2-year experiment.
Article
Biochemistry & Molecular Biology
Aina D. R. Ramirez, Myrela C. S. de Jesus, Rubens A. O. Menezes, Marcelo C. Santos-Filho, Margarete S. M. Gomes, Tamirys S. Pimenta, Vanessa S. Barbosa, Julia Rossit, Nathalia F. Reis, Simone Cristina Pereira Brito, Marrara Pereira Sampaio, Gustavo C. Cassiano, Luciane M. Storti-Melo, Andrea R. S. Baptista, Ricardo L. D. Machado
Summary: This study evaluated the association between five polymorphisms in TLR-4, TLR-6, and TLR9 genes and cytokine levels and clinical parameters in malaria from the Brazil-French Guiana border. An association between TLR4 A299G with parasitemia was observed. Increased levels of IFN-gamma, TNF-alpha, IL-6, and IL-10 were found in certain TLR-4, TLR-6, and TLR-9 gene polymorphisms. The immune response observed varied depending on the human population and Plasmodium species.
Article
Education & Educational Research
Isabelle Leglise, Bettina Migge
Summary: On the French Guiana-Suriname border, members of the same population groups engage in circular mobility, with their practices and identities influenced by traditional emic social distinctions, modern states' language ideologies, and emerging discourses in the urban context. The study shows that the border zone constitutes a separate sociolinguistic area, but multiple identifications co-exist among the Maroon population, leading to both similarities and sharp differences at various levels of language use and ideologies.
INTERNATIONAL JOURNAL OF MULTILINGUALISM
(2021)
Article
Environmental Sciences
Jessica Ruijsch, Adriaan J. Teuling, Jan Verbesselt, Ronald W. A. Hutjes
Summary: In response to environmental change, local land restoration projects have emerged in Africa with the aim of preventing or reversing land degradation, combating climate change, and improving the local climate. However, due to the lack of a complete database, limited monitoring, and low survival rate of vegetation, the contribution of these projects to the greening of Africa at larger scales is still unknown. This study uses climate independent greening time series to identify local greening hotspots in Africa and finds that 2.1% of Africa experiences local greening, particularly in semi-arid environments. The study also shows that various forms of sustainable land management lead to significant local greening, with active revegetation being more effective than natural regeneration.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Ahmed Ali Bindajam, Javed Mallick, Hoang Thi Hang
Summary: Urbanization in India is causing negative impacts on the environment and human health due to the expansion of built-up areas and the decline of vegetation and water bodies. To address this issue, the study examines urban expansion processes in English Bazar Municipality. The study identifies an increase in built-up areas accompanied by decreased vegetation and increased fragmentation over time. To promote sustainable urban development, stakeholders and the government should prioritize the conservation and creation of green and blue spaces through the incorporation of green infrastructure, smart city principles, community engagement, and partnerships with local businesses.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Marcos Eduardo Hartwig, Luma Pimentel Ribeiro
Summary: This study determined the morphology and geometry of 30 gullies in Alegre municipality, Brazil using the SfM technique based on drone imagery. The results showed that gullies associated with roadways have distinct forms, with W-shaped gullies possibly representing an intermediate evolutionary step. The study demonstrated that the SfM technique is suitable for gully mapping and allows for a better understanding of their origin and evolution.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Environmental Sciences
Bin Xu, Kai Ji, Bin Qi, Yucong Tao, Xiaohui Qi, Yan Zhang, Yan Liu
Summary: This study analyzed the land use and land cover changes and assessed the landscape ecological risks in the Yulin region using ArcGIS. The dominant land use types were grassland and cultivated land. High-risk areas were mainly found in Yuyang and some parts of Jingbian, while most of the region belonged to low/medium and medium risk grades. The changes in grassland, cultivated land, and bare land had a greater impact on landscape fragmentation. The results can provide guidance for vegetation restoration, land use planning, and sustainable development in Yulin and similar regions.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Agronomy
Srinivasa Rao Peddinti, Isaya Kisekka
Summary: Estimating actual crop evapotranspiration (ETc) using high-resolution aerial remote sensing data is crucial for detecting water stress and managing water resources in precision agriculture. This study compared three remote sensing ETc models and found that the Two-Source Energy Balance (TSEB) model performed the best in estimating instantaneous turbulent fluxes and spatial variability.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Biodiversity Conservation
Lukasz Mikolajczyk, Ryszard Laskowski, Elzbieta Ziolkowska, Agnieszka J. Bednarska
Summary: The study proposes a methodological approach to describe agricultural landscape properties tailored for specific species, simplifying complex landscape descriptions into a few main shaping factors for further analysis. The results suggest that for pollinators with a home range radius above ca. 100 m, both local habitat counts and large-scale landscape properties are important for biodiversity management.
ECOLOGICAL INDICATORS
(2021)
Article
Green & Sustainable Science & Technology
Diego Peruchi Trevisan, Polyanna da Conceicao Bispo, Yaqing Gou, Bianca Fogaca de Souza, Veraldo Liesenberg, Angela Harris, Heiko Balzter, Luiz Eduardo Moschini
Summary: The study utilized RF algorithm and Sentinel-2 satellite data to analyze land use and land cover changes in the Tiete-Jacare watershed in Sao Paulo state, Brazil. Eight classes were identified, with agricultural activities predominantly covered by sugarcane cultivation over the three years.
Article
Biodiversity Conservation
Purnendu Sardar, Sukha Ranjan Samadder
Summary: The study found that the Sundarban mangrove forest had minimal changes, with significant changes in open and dense mangrove forests; human habitat and aquaculture were rapidly expanding land-use types; the modeling showed a continued increase in human habitat in the near future.
ECOLOGICAL INDICATORS
(2021)
Article
Language & Linguistics
Kelly Cristina Nascimento Day
Summary: The study reveals that the linguistic dynamics on the French-Brazilian border are influenced by sociodemographic and economic criteria, leading to compartmentalized language use and the role of language boundaries as territorial delineators.
LINGUAS E INSTRUMENTOS LINGUISTICOS
(2021)
Article
Public, Environmental & Occupational Health
Anissa Desmoulin, Alessia Melzani, Celine Dard, Mathieu Nacher, Felix Djossou, Mohamed Kinan Drak Alsibai, Loic Epelboin
Summary: The paper presents a case of abdominal angiostrongyliasis in French Guiana, caused by Angiostrongylus costaricensis. This is the first reported case in the eastern part of the Amazon. The patient, a 34-year-old French man, had traveled to the Caribbean.
JOURNAL OF TRAVEL MEDICINE
(2023)
Article
Environmental Sciences
Amelie Martinot, Antoine Adenis, Paul Brousse, Yoland Govindin, Cyril Rousseau, Nadia Thomas, Mathieu Nacher, Timothee Bonifay
Summary: The health of farmers in French Guiana is declining, with cardiovascular diseases being the leading cause of death. High blood pressure, obesity, and diabetes prevalence among farmers are particularly worrying, indicating the need for policies to reduce cardiovascular morbidity and mortality.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Infectious Diseases
Mathieu Nacher, Paul Le Turnier, Philippe Abboud, Ugo Francoise, Aude Lucarelli, Magalie Demar, Felix Djossou, Loic Epelboin, Pierre Couppie, Antoine Adenis
PLOS NEGLECTED TROPICAL DISEASES
(2023)
Article
Endocrinology & Metabolism
Sabrina Dordonne, Mayka Mergeayfabre, Nezha Hafsi, Andre Ntoutoum, Clara Salazar-Cardozo, Olivier Casse, Marianne Hounnou, Antoine Adenis, Jean-Markens Aurelus, Caroline Misslin-Tristch, Jean-Francois Carod, Bertrand De Toffol, Jean Francois Lienne, Magalie Demar, Mathieu Nacher, Nadia Sabbah
Summary: This study investigated the association of Lp(a) with macrovascular complications in a multiethnic population of patients with diabetes in French Guiana. The findings showed that Lp(a) concentration was higher among the Creole ethnic group and no association was found between Lp(a) levels and macrovascular complications in the group with Lp(a) > 300 mg/mL. Further studies should explore genetic polymorphisms in this population.
JOURNAL OF DIABETES RESEARCH
(2023)
Article
Medicine, Legal
Alexis Fremery, Vincent Piriou, Clemence Bonnefoy, Karim Hamiche, Hatem Kallel, Jean Pujo, Timothee Bonifay, Mathieu Nacher
Summary: French Guiana is a hub for drugs trafficking and body-packing is a favored method. From 2016 to 2019, 668 people were referred to Cayenne hospital's emergency department for suspected body-packing. Most complications were digestive stagnation requiring endoscopy.
JOURNAL OF FORENSIC AND LEGAL MEDICINE
(2023)
Article
Immunology
Julia Dugardin, Magalie Demar, Nezha Hafsi, Hakim Amroun, Jean-Markens Aurelus, Kinan Drak Alsibai, Andre Ntoutoum, Florin Santa, Mathieu Nacher, Nadia Sabbah
Summary: This study investigated the association between HTLV-1 and thyroid dysfunction, and found that the prevalence of thyroid dysfunction in HTLV-1 infected patients was significantly higher than that in the control group.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Article
Public, Environmental & Occupational Health
Roxane Schaub, M. Sigrid Mac Donald Ottevanger, Soeradj Harkisoen, Beatrice Pesna, Celine Duijves, Marieke Heemskerk, Thomas Polime, Edouard Tuaillon, Stephen Vreden, Mathieu Nacher
Summary: Researchers conducted an epidemiological study on viral hepatitis in remote communities in French Guiana and Suriname. They faced challenges in reaching these communities due to logistical constraints, cultural barriers, and mistrust of outsiders. By collaborating with community leaders and health workers, they were able to overcome these challenges and successfully implement the study.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Immunology
Mathieu Nacher, Nicolas Vignier, Cyril Rousseau, Antoine Adenis, Maylis Douine, Celia Basurko, Bertrand de Toffol, Narcisse Elenga, Hatem Kallel, Jean Pujot, Magaly Zappa, Magalie Demar, Felix Djossou, Pierre Couppie, Loic Epelboin
Summary: French Guiana, the least-vaccinated French territory in Latin America, has low COVID-19 vaccination coverage. This study estimated the number of deaths, hospitalizations, and costs that could have been avoided with vaccination. The findings demonstrate the significant benefits of vaccination and provide concrete data to persuade undecided individuals to get vaccinated.
Review
Infectious Diseases
Loic Epelboin, Mateus De Souza Ribeiro Mioni, Aurelie Couesnon, Mona Saout, Edith Guilloton, Salma Omar, Vincent Pommier De Santi, Bernard Davoust, Jean Lou Marie, Anne Lavergne, Damien Donato, Alexandro Guterres, Sebastien Rabier, Justin Destoop, Felix Djossou, Xavier Baudrimont, Antoine Roch, Gabriel Leonardo Cicuttin, Tatiana Rozental, Mathieu Nacher, Javier Millan, Elba R. Sampaio De Lemos, Jorlan Fernandes, Olivier Duron, Benoit De Thoisy, Elodie Rousset
Summary: This review aims to examine the data on Coxiella burnetii infection in animals in Latin America and the Caribbean. The study found that only 25 out of 47 countries had publications related to C. burnetii infection, with Brazil, French Guiana, and Colombia being the most productive. Studies on livestock showed a wide range of seroprevalence rates, and limited knowledge was available on infection in wildlife and ticks. More research is needed to fill the gaps in data on C. burnetii infection in animals in the region.
CURRENT TROPICAL MEDICINE REPORTS
(2023)
Article
Infectious Diseases
Mathieu Nacher, Celia Basurko, Maylis Douine, Yann Lambert, Najeh Hcini, Narcisse Elenga, Paul Le Turnier, Loic Epelboin, Felix Djossou, Pierre Couppie, Bertrand de Toffol, Kinan Drak Alsibai, Nadia Sabbah, Antoine Adenis
Summary: There are significant variations in French Guiana's epidemiologic transition that deviate from the classical theory. The decline in infant mortality is gradual but still remains higher than expected. Premature mortality rates have declined more rapidly, but recent political turmoil, the COVID-19 pandemic, and vaccine hesitancy have caused a resurgence. Infections contribute more frequently to mortality, although circulatory and metabolic causes play a significant role in premature death.
TROPICAL MEDICINE AND INFECTIOUS DISEASE
(2023)
Article
Infectious Diseases
Najeh Hcini, Veronique Lambert, Olivier Picone, Jean-Francois Carod, Meredith Mathieu, Romane Cousin, Ferroudja Akli, Gabriel Carles, Celia Basurko, Leo Pomar, Loic Epelboin, Mathieu Nacher
Summary: The study aimed to describe the various causes and consequences of fever during pregnancy in Western French Guiana and along the Maroni River. The results showed that the causes of fever during pregnancy are diverse and often associated with epidemic waves.
PLOS NEGLECTED TROPICAL DISEASES
(2023)
Article
Immunology
Pierre Durand, Celia Basurko, Stephen Vreden, Mathieu Nacher, Maylis Douine
Summary: This study investigates the knowledge, attitudes, and practices of Brazilian garimpeiros in French Guiana and Suriname regarding COVID-19 and vaccination. The findings show that most garimpeiros have good general knowledge of COVID-19, but the high consumption of antibiotics raises concerns about the selection of resistant bacteria. The vaccination rate among garimpeiros is higher than that of the general population in French Guiana.
Article
Microbiology
Deborah Porez, Hatem Kallel, Succes Dobian, Timotee Gerbert-Ferrendier, Mathieu Nacher, Felix Djossou, Magalie Demar, Hakim Amroun, Magaly Zappa, Kinan Drak Alsibai
Summary: Emphysematous hepatitis is a rare infectious disease that is often associated with unbalanced diabetes and bacterial fermentation. Very few cases have been described in the literature, and most of them have a severe course. In this manuscript, a successfully managed case of emphysematous hepatitis is reported, and a review of the literature is performed to describe the clinical and biopathological aspects of this rare liver disease. The study emphasizes the importance of performing biological and histopathological sampling to better understand the pathophysiology of this disease.
Article
Infectious Diseases
Olivia Cohen, Mathilde Boutrou, Mathieu Nacher, Eric Caumes, Felix Djossou, Loic Epelboin
Summary: The use of Artemisia annua herbal tea as a malaria prophylaxis has increased in Africa, but it is not recommended due to lack of efficacy. This behavior poses a real risk of severe malaria complications and death, highlighting the need for awareness.
REVISTA DO INSTITUTO DE MEDICINA TROPICAL DE SAO PAULO
(2023)
Article
Public, Environmental & Occupational Health
Mathieu Nacher, Celia Basurko, Gabriel Bafunyembaka Muhigirwa, Veronique Lambert, Lindsay Osei, Falucar Njuieyon, Alphonse Louis, Dominique Dotou, Nadia Thomas, Stephanie Bernard, Malika Leneuve, Narcisse Elenga, Najeh Hcini
Summary: French Guiana has a higher infant mortality rate compared to mainland France, with causes including perinatal factors, malformations and chromosomal anomalies, accidents, infectious diseases, and poorly defined conditions. Over time, all causes of infant mortality seemed to decline except for malformations and chromosomal anomalies.
REVUE D EPIDEMIOLOGIE ET DE SANTE PUBLIQUE
(2023)