Antimycobacterial activity of some Brazilian indigenous medicinal drinks

Tuberculosis (TB) is a very serious problem worldwide and the increasing number of multiple drugs resistant TB cases makes the search for new anti-TB drugs an urgent need. Indigenous knowledge about the use of native plants to treat illnesses has contributed to the discovery of new medicines. In this study, the antimycobacterial activity of seven medicinal drinks was assessed: Ananas sativus (hydroalcoholic fruit extract), Aristolochia triangularis (aqueous and hydroalcoholic leaf, root and stem extracts), Bromelia antiacantha (hydroalcoholic fruit extract), Stryphnodendron adstringens (hydroalcoholic bark extract), Tabebuia ovellanedae (hydroalcoholic bark extract), Vernonia polyanthes (hydroalcoholic root extract), all used by the Vanuíre indigenous community in the treatment of respiratory diseases. The activity was evaluated by using a time-to-kill assay, in which Mycobacterium tuberculosis H37Rv was cultured on Löwenstein-Jensen medium, after thirty minutes, one, three, six, twelve and twenty-four hours contact of the bacteria with each drink. Within half to one hour contact, the hydroalcoholic drinks of A. triangularis, S. adstringens, T. ovellanedae and V. polyanthes reduced the bacterial growth by 2 orders of magnitude in CFU/mL, and all bacterial growth was absent after three hours contact. In contrast, no mycobactericidal effect was detected in the aqueous extract of A. triangularis or in the hydroalcoholic beverages of A. sativus and B. antiacantha, even after twenty-four hours contact.

Pueblos indígenas = Indigenous people

Incluye CD-ROM

Indigenous peoples and urban settlements: spatial distribution, internal migration and living conditions

Includes bibliography

Planning for indigenous technological development and the decadence of the industrial property system in the Caribbean

Includes bibliography

Indigenous peoples and modernity

Includes bibliography

Indigenous organizations: rising actors in Latin America

Includes bibliography

Equity and exclusion in Latin America and the Caribbean: the case of indigenous and Afro-descendant peoples

Includes bibliography

At least two indigenous species of the Bemisia tabaci complex are present in Brazil

Bemisia tabaci is one of the most important global agricultural insect pests, being a vector of emerging plant viruses such as begomoviruses and criniviruses that cause serious problems in many countries. Although knowledge of the genetic diversity of B. tabaci populations is important for controlling this pest and understanding viral epidemics, limited information is available on this pest in Brazil. A survey was conducted in different locations of São Paulo and Mato Grosso states, and the phylogenetic relationships of B. tabaci individuals from 43 populations sampled from different hosts were analysed based on partial mitochondrial cytochrome oxidase 1 gene (mtCOI) sequences. According to the recently proposed classification of the B. tabaci complex, which employs the 3.5% mtCOI sequence divergence threshold for species demarcation, most of the specimens collected were found to belong to the Middle East-Asia Minor 1 species, which includes the invasive populations of the commonly known B biotype, within the Africa/Middle East/Asia Minor high-level group. Three specimens collected from Solanun gilo and Ipomoea sp. were grouped together and could be classified in the New World species that includes the commonly known A biotype. However, six specimens collected from Euphorbia heterophylla, Xanthium cavanillesii and Glycine maxima could not be classified into any of the 28 previously proposed species, although according to the 11% mtCOI sequence divergence threshold, they belong to the New World high-level group. These specimens were classified into a new recently proposed species named New World 2 that includes populations from Argentina. Middle East-Asia Minor 1, New World and New World 2 were differentiated by RFLP analysis of the mtCOI gene using TaqI enzyme. Taq I analysis in silico also differentiates these from Mediterranean species, thus making this method a convenient tool to determine population dynamics, especially critical for monitoring the presence of this exotic pest in Brazil. © 2012 Blackwell Verlag, GmbH.

Contributions made by ECLAC from a rights perspective regarding indigenous peoples' and afrodescendants' affairs

Includes bibliography

The Rights of Indigenous Children

While children in general are overrepresented among those living in poverty, a long history of discrimination and exclusion has ensured that indigenous children in Latin America and the Caribbean are in an even worse position. In the general population 63% of children aged under 18 years live in poverty, as measured by privation of the basic rights to well-being; however, that figure is as high as 88% among indigenous children in the same age group. This is a violation of these children's rights —including their rights to survival and development— and entails high costs for society in terms of productive capacity and social inclusion. That is the thrust of the argument in the central article of this issue of Challenges, which focuses on poverty among indigenous children. The data show a pattern of inequality that is highly detrimental to indigenous children: they make up a disproportionate number of those living in extreme poverty and are three times more likely to lack access to education, safe drinking water and housing than other children. It is a matter of particular concern that in the countries of the Andean Community 5 of every 10 indigenous children under the age of 5 years suffer from chronic malnutrition.This edition includes brief testimonies by indigenous children as to what their life is like; an interview with Marta Maurás, Vice-Chairperson of the United Nations Committee on the Rights of the Child, on the international mechanisms in place to safeguard the rights of indigenous children; and, lastly, an article on the Uantakua programme in Mexico, which uses information and communication technologies in bilingual schools with large indigenous populations.

Guaranteeing indigenous people's rights in Latin America. Progress in the past decade and remaining challenges. Summary

As the twenty-first century advances, the countries of Latin America are building deeper democracies and looking critically at the development process, in the growing conviction that development should focus on equality and be approached on the basis of rights. This means tackling the region’s persistent inequalities, especially those affecting indigenous peoples, who have historically suffered exclusion and discrimination. It also means guaranteeing indigenous people both the enjoyment of human rights on an equal footing to the rest of society, and the right to be collectively different. This is a challenge for this century, which began with the recognition of the rights of indigenous people and the role they unquestionably play on national and international agendas.

América Latina: información censal sobre pueblos indígenas = Latin America: censal information about indigenous people

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Indigenous American species of the Bemisia tabaci complex are still widespread in the Americas

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)