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Organic agriculture and rural networks in the mountain environments of Regiao serrana fluminense, Rio de Janeiro, Brazil.

ABSTRACT: This paper presents a case study on organic agriculture at Região Serrana Fluminense, Rio de Janeiro State, Brazil. We sought to understand what was the role of organic farming, and if it can be considered as an aggregating element between different kinds of people or groups who were located in the same region. The methodology used to carry out this investigation was based on the concept of the rural network, which enabled us to comprehend the articulations and connections that comprise the organic agriculture circuit in the mountains of this specific region.

SUBMITTER: Aun NJ

PROVIDER: S-EPMC8074709 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Organic agriculture and rural networks in the mountain environments of Região serrana fluminense, Rio de Janeiro, Brazil.

Aun Nádia Jarouche NJ de Assis Renato Linhares RL

Royal Society open science 20210224 2

This paper presents a case study on organic agriculture at Região Serrana Fluminense, Rio de Janeiro State, Brazil. We sought to understand what was the role of organic farming, and if it can be considered as an aggregating element between different kinds of people or groups who were located in the same region. The methodology used to carry out this investigation was based on the concept of the rural network, which enabled us to comprehend the articulations and connections that comprise the orga ...[more]

PMID: 33972836

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Project description:BackgroundIntestinal parasitic infections are considered a serious public health problem and widely distributed worldwide, mainly in urban and rural environments of tropical and subtropical countries. Globally, soil-transmitted helminths and protozoa are the most common intestinal parasites. Blastocystis sp. is a highly prevalent suspected pathogenic protozoan, and considered an unusual protist due to its significant genetic diversity and host plasticity.Methodology/main findingsA total of 294 stool samples were collected from inhabitants of three rural valleys in Rio de Janeiro, Brazil. The stool samples were evaluated by parasitological methods, fecal culture, nested PCR and PCR/Sequencing. Overall prevalence by parasitological analyses was 64.3% (189 out of 294 cases). Blastocystis sp. (55.8%) was the most prevalent, followed by Endolimax nana (18.7%), Entamoeba histolytica complex (7.1%), hookworm infection (7.1%), Entomoeba coli (5.8%), Giardia intestinalis (4.1%), Iodamoeba butchilii (1.0%), Trichuris trichiura (1.0%), Pentatrichomonas hominis (0.7%), Enterobius vermicularis (0.7%), Ascaris lumbricoides (0.7%) and Strongyloides stercoralis (0.7%). Prevalence of IPIs was significantly different by gender. Phylogenetic analysis of Blastocystis sp. and BLAST search revealed five different subtypes: ST3 (34.0%), ST1 (27.0%), ST2 (27.0%), ST4 (3.5%), ST8 (7.0%) and a non-identified subtype.Conclusions/significanceOur findings demonstrate that intestinal parasite infection rates in rural areas of the Sumidouro municipality of Rio de Janeiro, Brazil are still high and remain a challenge to public health. Moreover, our data reveals significant genetic heterogeneity of Blastocystis sp. subtypes and a possible novel subtype, whose confirmation will require additional data. Our study contributes to the understanding of potential routes of transmission, epidemiology, and genetic diversity of Blastocystis sp. in rural areas both at a regional and global scale.

Dataset Information

Organic agriculture and rural networks in the mountain environments of Regiao serrana fluminense, Rio de Janeiro, Brazil.

Publications

Organic agriculture and rural networks in the mountain environments of Região serrana fluminense, Rio de Janeiro, Brazil.

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