Villagers’ Knowledge of Medicinal Plants Around Madagascar’s Analavelona Forest Shows Promise for Conservation

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The most used medicinal plants by communities in Mahaboboka, Amboronabo, Mikoboka, Southwestern Madagascar

Randrianarivony TN, Ramarosandratana AV, Andriamihajarivo TH, Rakotoarivony F, Jeannoda VH, Randrianasolo A, Bussmann RW
J Ethnobiol Ethnomed. 2017 Mar 9;13(1):19
PubMed Central: PMC5345199

Investigators from the Missouri Botanical Garden and University of Antananarivo conducted a study to document local use of medicinal plants in three communities around Madagascar’s Analavelona Forest.

Writing in the Journal of Ethnobiology and Ethnomedicine, Tabita N. Randrianarivony and co-authors note that while Madagascar hosts one of the world’s richest natural heritages, the island nation is one of the world’s poorest:

Madagascar hosts one of the richest natural heritage in the world but is classified among the least developed countries with low Gross Domestic Product (GDP) per capita estimated at 409$ in 2015. This poverty contributes to a rapid loss of biodiversity in a country, where exploiting natural resources are the unique available sources of incomes for most of people living in rural areas. Due to health facilities that do not meet standards, together with poor sanitary infrastructures and unmotivated medical staff, unaffordable drug costs and high consulting fees, use of medicinal plants is now often part of the first resort delivered and the only accessible therapy to people from several localities in Madagascar including communities from remote areas like Mahaboboka, Mikoboka and Amboronabo.

Based on interviews with villagers in the Mahaboboka, Amboronabo, and Mikoboka communities, the team documented 235 medicinal plant species used to treat various ailments including disorders of the blood and cardiovascular system; digestive system disorders; dental health and cranial system problems; general ailments; infectious diseases; musculoskeletal disorders; nervous system disorders; problems of pregnancy, birth, and puerperium; reproductive system disorders; respiratory system disorders; sensory system disorders; and veterinary ailments.

Leonotis nepetifolia
Leonotis nepetifolia [Source: Kurt Stueber, Wikimedia Commons]
Widely reported medicinal plants included Acridocarpus excelsus, Cedrelopsis grevei, Henonia scoparia, Leonotis nepetifolia, and Strychnos henningsii.

The authors point a way forward to sustainable use of Madagascar’s medicinal plants, many of which are endangered, encouraging collaboration with the local inhabitants, who have a sophisticated system of transmitting and preserving ethnobotanical knowledge:

Knowledge of medicinal plants in areas surrounding Analavelona forest is well transmitted orally from elders to youngers, from dominant ethnic group to immigrants and from illiterate people to school going and to the other members of society. This work is significant as it helps the conservation of medicinal plants knowledge and constitutes a written document for the next generation. Results of this study will ease decision making for the conservation of Analavelona forest. For the continuation of the project, local communities will be aware of known plants properties which exist in the area. They could benefit traditional knowledge they disclose to the scientific community especially regarding the discovery of new medicines.

Read the complete article at PubMed Central.

The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.




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Recognizing & Recovering Traditional Knowledge of Saraguro Healers in Southern Ecuador

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Ethnobotany of Indigenous Saraguros: Medicinal Plants Used by Community Healers “Hampiyachakkuna” in the San Lucas Parish, Southern Ecuador

Andrade JM, Lucero Mosquera H, Armijos C
Biomed Res Int. 2017;2017:9343724
PubMed Central: PMC5514338

Loja Province, Ecuador
Loja Province, Ecuador [Source: TUBS, WikimediaCommons]
Investigators at Universidad Técnica Particular de Loja conducted an ethnobotanical survey in the Loja Province of southern Ecuador to learn about the use of medicinal plants by Hampiyachakkuna community healers treating the indigenous Saraguro population in San Lucas Parish.

Writing in the journal BioMed Research International, authors José M. Andrade, Hernán Lucero Mosquera, and Chabaco Armijos note that only a few ethnobotanical studies have reported on the use of plants in the Saraguro region and that a thorough documentation of medicinal plants used by Saraguro healers has not been done prior to this investigation. They describe an urgent need to document and preserve this cultural knowledge:

“The Saraguros are one of the best-organized ethnical groups in Ecuador and have conserved many aspects of their ancient culture and traditions for centuries. They demonstrate the latter by preserving their typical dressing, language, religion, gastronomy, architecture, social habits, and medical practices. Among their medical practice traditions, this ethnic group is known for the use of medicinal plants in their own health care system. In fact, the use of these plants as therapeutic agents is an important feature of traditional indigenous medicine and is still practiced within the Saraguro community. In particular, the Saraguros are highly recognized for the development of optimization techniques that help them select natural/plant resources to be used in their health care practices.”

The team carried out their research on several field visits, during which they interviewed four healers from the Saraguro community (a Wachakhampiyachak [midwife], a Yurakhampiyachak [herbalist], a Kakuyhampiyachak [bone-healer], and a Rikuyhampiyachak [visionary]) regarding the medicinal plants they used in their practices. Notably, while the healers are highly trusted and recognized as effective by the community, they are also well integrated into the region’s allopathic health care system and readily transfer a patient to a health center or hospital when they detect serious conditions.

Working with the healers, the investigators documented the existence of 183 medicinal plant species used in 75 different curative therapies, including nervous system treatments, cold treatments, infection treatments, general malaise treatments, inflammatory treatments of the liver and kidneys, and “mythological” treatments (for diseases determined to be of a supernatural nature).

Salvia leucocephala
Salvia leucocephala [Photo: Dick Culbert, Wikimedia Commons]
The team documented thirteen medicinal plants endemic to the region: Achyrocline hallii (sacha algodón); Ageratina dendroides (pegac chilca); Bejaria subsessilis (pena de cerro); Brachyotum scandens (sarcillo sacha); Dendrophthora fastigiata (suelda pequeña); Diplostephium juniperinum (monte de baño); Diplostephium oblanceolatum (chuquir agua); Fuchsia hypoleuca (sacha pena); Huperzia austroecuadorica (wuaminga verde pequeño); Lepechinia paniculata (shallshón); Phoradendron parietarioides (suelda grande); Salvia leucocephala (sp flor morado); Siphocampylus scandens (pena rojo de monte). Most of these plants are either vulnerable or endangered, due primarily to habitat loss.

In their conclusion, the authors stress the importance of preservation:

“This research conducted in collaboration with the members of the native Saraguro community constitutes a baseline study to help promote the preservation of this ancient medicinal knowledge by a thorough documentation of the natural resources and processing methods used. Moreover, we hope the results of this study motivate young generations to envision the potential of the use and application of traditional knowledge in medicinal practices. Finally, this scientific research and the results here reported aim at preserving and enhancing, as much as possible, a culture of the practice of natural ancient medicinal science, while preserving the environment, nature, life, culture, and sovereignty of the Saraguro people.”

Read the complete article at PubMed Central.

The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.




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EthnomedicineWatch.com

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I recently launched a new open-access website to capture one of my abiding interests: tropical medicine and certain related disciplines, including ethnomedicine, ethnobotany, and ethnopharmacology.

EthnomedicineWatch
EthnomedicineWatch.com

The site is EthnomedicineWatch.com, and it delivers continually updated information on current peer-reviewed research about medicinal plants, indexed by species and sponsoring organization.

OncologyWatch
OncologyWatch.com

EthnomedicineWatch is one of two websites that I maintain to provide information relevant to health care. The other site, OncologyWatch.com, provides continually updated information on peer-reviewed journal articles and current clinical trials in cancer treatment, indexed by cancer type.

My epistemological method for these websites derives from “As We May Think,” a 1945 Atlantic Monthly essay by Vannevar Bush, FDR’s science adviser during and after World War II. Bush’s vision of a personal knowledge base (memex) led to the development of the hyperlink and the World Wide Web.

PubMed (an archive of biomedical and life sciences journal literature) and ClinicalTrials.gov (a database of privately and publicly funded clinical studies conducted around the world) are essential to EthnomedicineWatch and OncologyWatch. Virtually every update to my two sites originates with either PubMed and ClinicalTrials.gov, both of which are maintained by the US National Institutes of Health’s National Library of Medicine—surely two of the most useful and most efficient instances of US taxes at work.

To make full use of EthnomedicineWatch and OncologyWatch, you may also want to follow my blog posts and Twitter feed as I work to integrate these information streams into a unified, open-access “knowledge machine” to support the work of environmental stewards and promoters of human health and creativity. (On that, more to come.)

The information on my blog is not intended as a substitute for medical professional help or advice but is to be used only as an aid in understanding current medical knowledge. A physician should always be consulted for any health problem or medical condition.




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