scholarly journals Topography and Land Cover of Watersheds Predicts the Distribution of the Environmental Pathogen Mycobacterium ulcerans in Aquatic Insects

2014 ◽  
Vol 8 (11) ◽  
pp. e3298 ◽  
Author(s):  
Kevin Carolan ◽  
Andres Garchitorena ◽  
Gabriel E. García-Peña ◽  
Aaron Morris ◽  
Jordi Landier ◽  
...  
Keyword(s):  
Land Cover ◽  
Aquatic Insects ◽  
Mycobacterium Ulcerans

scholarly journals Prevalence of Aquatic Insects and Arsenic Concentration Determine the Geographical Distribution ofMycobacterium ulceransInfection

2007 ◽  
Vol 8 (4) ◽  
pp. 235-244 ◽  
Author(s):  
Anthony Y. Aidoo ◽  
Bonsu Osei
Keyword(s):  
Geographical Distribution ◽  
Aquatic Insects ◽  
Arsenic Concentration ◽  
Buruli Ulcer ◽  
Sir Model ◽  
Epidemiological Model ◽  
Mycobacterium Ulcerans ◽  
Model Based

A modified SIR model is used to explain the transmission ofMycobacterium ulcerans(MU) and its dependence on arsenic (As) environments. Some studies have suggested that As plays a major role in the spread and prevalence of buruli ulcer (BU). In addition, it has been hypothesized that a vector in the form of a water-bug plays a key role in the epidemiology of BU. We develop an epidemiological model based on these assumptions for the dynamics and prevalence of BU and show that As positively induces the growth and spread of MU.

Relationships between land cover, riparian vegetation, stream characteristics, and aquatic insects in cloud forest streams, Mexico

Hydrobiologia ◽  
2015 ◽  
Vol 768 (1) ◽  
pp. 167-181 ◽  
Author(s):  
Manuel R. Astudillo ◽  
Rodolfo Novelo-Gutiérrez ◽  
Gabriela Vázquez ◽  
José G. García-Franco ◽  
Alonso Ramírez
Keyword(s):  
Land Cover ◽  
Aquatic Insects ◽  
Riparian Vegetation ◽  
Cloud Forest ◽  
Stream Characteristics ◽  
Forest Streams

scholarly journals Aquatic Insects and Mycobacterium ulcerans: An Association Relevant to Buruli Ulcer Control?

PLoS Medicine ◽  
2007 ◽  
Vol 4 (2) ◽  
pp. e63 ◽  
Author(s):  
Manuel T Silva ◽  
Françoise Portaels ◽  
Jorge Pedrosa
Keyword(s):  
Aquatic Insects ◽  
Buruli Ulcer ◽  
Mycobacterium Ulcerans

scholarly journals Aquatic Plants Stimulate the Growth of and Biofilm Formation by Mycobacterium ulcerans in Axenic Culture and Harbor These Bacteria in the Environment

2004 ◽  
Vol 70 (2) ◽  
pp. 1097-1103 ◽  
Author(s):  
Laurent Marsollier ◽  
Timothy Stinear ◽  
Jacques Aubry ◽  
Jean Paul Saint André ◽  
Raymond Robert ◽  
...  
Keyword(s):  
Aquatic Plants ◽  
Aquatic Insects ◽  
Biofilm Formation ◽  
Culture Medium ◽  
Axenic Culture ◽  
Buruli Ulcer ◽  
Immunomagnetic Separation ◽  
Mycobacterium Ulcerans ◽  
Mycobacterial Diseases ◽  
Potential Link

ABSTRACT Mycobacterium ulcerans is the causative agent of Buruli ulcer, one of the most common mycobacterial diseases of humans. Recent studies have implicated aquatic insects in the transmission of this pathogen, but the contributions of other elements of the environment remain largely unknown. We report here that crude extracts from two green algae added to the BACTEC 7H12B culture medium halved the doubling time of M. ulcerans and promoted biofilm formation. Using the 7H12B medium, modified by the addition of the algal extract, and immunomagnetic separation, we also demonstrate that M. ulcerans is associated with aquatic plants in an area of the Ivory Coast where Buruli ulcer is endemic. Genotype analysis showed that plant-associated M. ulcerans had the same profile as isolates recovered in the same region from both aquatic insects and clinical specimens. These observations implicate aquatic plants as a reservoir of M. ulcerans and add a new potential link in the chain of transmission of M. ulcerans to humans.

scholarly journals Order Hemiptera: The true host involved in Mycobacterium ulcerans transmission, or is it an innocent by-stander?

2014 ◽  
Author(s):  
Michael Selorm Avumegah ◽  
Christian Wejse
Keyword(s):  
Aquatic Insects ◽  
Aquatic Insect ◽  
Mycobacterium Ulcerans ◽  
Causative Organism ◽  
Ulcer Disease ◽  
Insect Order ◽  
Subcutaneous Layer ◽  
Slow Moving ◽  
Aquatic Bugs ◽  
Slow Growing

Burul ulcer disease is an infection of the subcutaneous layer. The causative organism, Mycobacterium ulcerans is a slow-growing environmental pathogen often associated with wetland and slow moving streams. One insect order believed to be associated with M.ulcerans is the order hemiptera, in which the aquatic bugs (Naucoris sp and Belostoma sp) belong. Some Mycobacteria species are endosymbiont of Acanthamoeba and laboratory experiments has confirmed this in M. ulcerans in an endemic area in Benin persisting in an amoeba for 14 days. Aquatic insect are believed to feed on amoeba, planktons, snail and fish from which they get infected. Protozoan and planktons may be the true resorvior or host of M. ulcerans but little research has been done in this area. Though many studies have found M. ulcerans in these insects, the exact mechanism of transmission to humans is still elusive. This study aims to review the available data on aquatic bugs, protozoans and other invertebrates (snail and fish) to ascertain if aquatic insects are themselves victims of the M. ulcerans through feeding.

scholarly journals Modelling the spatial distribution of aquatic insects (Order Hemiptera) potentially involved in the transmission of Mycobacterium ulcerans in Africa

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Jorge Cano ◽  
Antonio Rodríguez ◽  
Hope Simpson ◽  
Earnest N. Tabah ◽  
Jose F. Gómez ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Aquatic Insects ◽  
Mycobacterium Ulcerans

scholarly journals Aquatic Insects as a Vector for Mycobacterium ulcerans

2002 ◽  
Vol 68 (9) ◽  
pp. 4623-4628 ◽  
Author(s):  
Laurent Marsollier ◽  
Raymond Robert ◽  
Jacques Aubry ◽  
Jean-Paul Saint André ◽  
Henri Kouakou ◽  
...  
Keyword(s):  
Aquatic Insects ◽  
Buruli Ulcer ◽  
Mycobacterium Ulcerans ◽  
Laboratory Mice ◽  
Healthy Humans ◽  
Skin Ulcers ◽  
Chronic Skin ◽  
Set Up ◽  
Aquatic Bugs

ABSTRACT Mycobacterium ulcerans is an emerging environmental pathogen which causes chronic skin ulcers (i.e., Buruli ulcer) in otherwise healthy humans living in tropical countries, particularly those in Africa. In spite of epidemiological and PCR data linking M. ulcerans to water, the mode of transmission of this organism remains elusive. To determine the role of aquatic insects in the transmission of M. ulcerans, we have set up an experimental model with aquariums that mimic aquatic microenvironments. We report that M. ulcerans may be transmitted to laboratory mice by the bite of aquatic bugs (Naucoridae) that are infected with this organism. In addition, M. ulcerans appears to be localized exclusively within salivary glands of these insects, where it can both survive and multiply without causing any observable damage in the insect tissues. Subsequently, we isolated M. ulcerans from wild aquatic insects collected from a zone in the Daloa region of Ivory Coast where Buruli ulcer is endemic. Taken together, these results point to aquatic insects as a possible vector of M. ulcerans.

One-tube cell lysis and DNA extraction procedure for PCR-based detection of Mycobacterium ulcerans in aquatic insects, molluscs and fish

2004 ◽  
Vol 53 (9) ◽  
pp. 927-933 ◽  
Author(s):  
Roman Kotlowski ◽  
Anandi Martin ◽  
Anthony Ablordey ◽  
Karim Chemlal ◽  
Pierre-Alain Fonteyne ◽  
...  
Keyword(s):  
Dna Extraction ◽  
Aquatic Insects ◽  
Extraction Procedure ◽  
Cell Lysis ◽  
Mycobacterium Ulcerans ◽  
Tube Cell

scholarly journals Order Hemiptera: The true host involved in Mycobacterium ulcerans transmission, or is it an innocent by-stander?

2014 ◽  
Author(s):  
Michael Selorm Avumegah ◽  
Christian Wejse
Keyword(s):  
Aquatic Insects ◽  
Aquatic Insect ◽  
Mycobacterium Ulcerans ◽  
Causative Organism ◽  
Ulcer Disease ◽  
Insect Order ◽  
Subcutaneous Layer ◽  
Slow Moving ◽  
Aquatic Bugs ◽  
Slow Growing

Burul ulcer disease is an infection of the subcutaneous layer. The causative organism, Mycobacterium ulcerans is a slow-growing environmental pathogen often associated with wetland and slow moving streams. One insect order believed to be associated with M.ulcerans is the order hemiptera, in which the aquatic bugs (Naucoris sp and Belostoma sp) belong. Some Mycobacteria species are endosymbiont of Acanthamoeba and laboratory experiments has confirmed this in M. ulcerans in an endemic area in Benin persisting in an amoeba for 14 days. Aquatic insect are believed to feed on amoeba, planktons, snail and fish from which they get infected. Protozoan and planktons may be the true resorvior or host of M. ulcerans but little research has been done in this area. Though many studies have found M. ulcerans in these insects, the exact mechanism of transmission to humans is still elusive. This study aims to review the available data on aquatic bugs, protozoans and other invertebrates (snail and fish) to ascertain if aquatic insects are themselves victims of the M. ulcerans through feeding.

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