The gastro-intestinal helminth parasites of the swamp wallaby, Wallabia bicolor (Desmarest) (Marsupialia: Macropodidae), and their regional distribution

2016 ◽  
Vol 140 (2) ◽  
pp. 203-227 ◽  
Author(s):  
Ian Beveridge
Keyword(s):  
Regional Distribution ◽  
Intestinal Helminth ◽  
Helminth Parasites ◽  
Wallabia Bicolor ◽  
Swamp Wallaby

Intestinal Helminth Parasites of Wall Lizards, Podarcis vaucheri Complex (Sauria: Lacertidae) from Algeria

2011 ◽  
Vol 45 (3) ◽  
pp. 385-388 ◽  
Author(s):  
Miguel A. Carretero ◽  
Vicente Roca ◽  
Said Larbes ◽  
Andrea Ferrero ◽  
Fátima Jorge
Keyword(s):  
Intestinal Helminth ◽  
Helminth Parasites

scholarly journals The Interaction between HIV and Intestinal Helminth Parasites Coinfection with Nutrition among Adults in KwaZulu-Natal, South Africa

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
B. T. Mkhize ◽  
M. Mabaso ◽  
T. Mamba ◽  
C. E. Napier ◽  
Z. L. Mkhize-Kwitshana
Keyword(s):  
South Africa ◽  
Nutritional Status ◽  
Transferrin Saturation ◽  
Intestinal Helminth ◽  
Helminth Parasites ◽  
Probit Regression ◽  
Cross Sectional ◽  
Care Clinic ◽  
Comprehensive Primary Health Care ◽  
Kwazulu Natal

In South Africa few studies have examined the effects of the overlap of HIV and helminth infections on nutritional status. This cross-sectional study investigated the interaction between HIV and intestinal helminths coinfection with nutritional status among KwaZulu-Natal adults. Participants were recruited from a comprehensive primary health care clinic and stratified based on their HIV, stool parasitology, IgE, and IgG4 results into four groups: the uninfected, HIV infected, helminth infected, and HIV-helminth coinfected groups. The nutritional status was assessed using body mass index, 24-hour food recall, micro-, and macronutrient biochemical markers. Univariate and multivariate multinomial probit regression models were used to assess nutritional factors associated with singly and dually infected groups using the uninfected group as a reference category. Biochemically, the HIV-helminth coinfected group was associated with a significantly higher total protein, higher percentage of transferrin saturation, and significantly lower ferritin. There was no significant association between single or dual infections with HIV and helminths with micro- and macronutrient deficiency; however general obesity and low micronutrient intake patterns, which may indicate a general predisposition to micronutrient and protein-energy deficiency, were observed and may need further investigations.

scholarly journals Intestinal helminth infection transforms the CD4+ T cell composition of the skin

2021 ◽  
Author(s):  
Cajsa H. Classon ◽  
Muzhen Li ◽  
Ada Lerma Clavero ◽  
Junjie Ma ◽  
Xiaogang Feng ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Immune Responses ◽  
Chemokine Receptors ◽  
Immune Cell ◽  
Intestinal Helminth ◽  
Helminth Parasites ◽  
Long Term Effects ◽  
Mesenteric Lymph Nodes ◽  
Cell Composition

AbstractIntestinal helminth parasites can alter immune responses to vaccines, other infections, allergens and autoantigens, implying effects on host immune responses in distal barrier tissues. We herein show that the skin of C57BL/6 mice infected with the strictly intestinal nematode Heligmosomoides polygyrus contain higher numbers of CD4+ T cells compared to the skin of uninfected controls. Accumulated CD4+ T cells were H. polygyrus-specific TH2 cells that skewed the skin CD4+ T cell composition towards a higher TH2/TH1 ratio which persisted after worm expulsion. Accumulation of TH2 cells in the skin was associated with increased expression of the skin-homing chemokine receptors CCR4 and CCR10 on CD4+ T cells in the blood and mesenteric lymph nodes draining the infected intestine and was abolished by FTY720 treatment during infection, indicating gut-to-skin trafficking of cells. Remarkably, skin TH2 accumulation was associated with impaired capacity to initiate IFN-γ recall responses and develop skin-resident memory cells to mycobacterial antigens, both during infection and months after deworming therapy. In conclusion, we show that infection by a strictly intestinal helminth has long-term effects on immune cell composition and local immune responses to unrelated antigens in the skin, revealing a novel process for T cell colonisation and worm-mediated immunosuppression in this organ.

Epidemiological studies on intestinal helminth parasites of the patagonian grey fox (Pseudalopex griseus) in Tierra del Fuego, Patagonia Argentina

2006 ◽  
Vol 136 (3-4) ◽  
pp. 329-334 ◽  
Author(s):  
Fabián Zanini ◽  
Miguel Laferrara ◽  
Matías Bitsch ◽  
Héctor Pérez ◽  
Maria Celina Elissondo
Keyword(s):  
Epidemiological Studies ◽  
Tierra Del Fuego ◽  
Intestinal Helminth ◽  
Helminth Parasites

scholarly journals Helminth secretions induce de novo T cell Foxp3 expression and regulatory function through the TGF-β pathway

2010 ◽  
Vol 207 (11) ◽  
pp. 2331-2341 ◽  
Author(s):  
John R. Grainger ◽  
Katie A. Smith ◽  
James P. Hewitson ◽  
Henry J. McSorley ◽  
Yvonne Harcus ◽  
...  
Keyword(s):  
Transforming Growth Factor ◽  
Fluorescent Protein ◽  
De Novo ◽  
Foxp3 Expression ◽  
Dominant Negative ◽  
Regulatory Function ◽  
Intestinal Helminth ◽  
Helminth Parasites

Foxp3-expressing regulatory T (T reg) cells have been implicated in parasite-driven inhibition of host immunity during chronic infection. We addressed whether parasites can directly induce T reg cells. Foxp3 expression was stimulated in naive Foxp3− T cells in mice infected with the intestinal helminth Heligmosomoides polygyrus. In vitro, parasite-secreted proteins (termed H. polygyrus excretory-secretory antigen [HES]) induced de novo Foxp3 expression in fluorescence-sorted Foxp3− splenocytes from Foxp3–green fluorescent protein reporter mice. HES-induced T reg cells suppressed both in vitro effector cell proliferation and in vivo allergic airway inflammation. HES ligated the transforming growth factor (TGF) β receptor and promoted Smad2/3 phosphorylation. Foxp3 induction by HES was lost in dominant-negative TGF-βRII cells and was abolished by the TGF-β signaling inhibitor SB431542. This inhibitor also reduced worm burdens in H. polygyrus–infected mice. HES induced IL-17 in the presence of IL-6 but did not promote Th1 or Th2 development under any conditions. Importantly, antibody to mammalian TGF-β did not recognize HES, whereas antisera that inhibited HES did not affect TGF-β. Foxp3 was also induced by secreted products of Teladorsagia circumcincta, a related nematode which is widespread in ruminant animals. We have therefore identified a novel pathway through which helminth parasites may stimulate T reg cells, which is likely to be a key part of the parasite’s immunological relationship with the host.

Intestinal helminth parasites in flounderPlatichthys flesusfrom the River Thames: an infracommunity analysis

2004 ◽  
Vol 78 (4) ◽  
pp. 297-303 ◽  
Author(s):  
S. Guillen-Hernandez ◽  
P.J. Whitfield
Keyword(s):  
Parasite Species ◽  
Parasite Community ◽  
Intestinal Helminth ◽  
Helminth Parasites ◽  
Intermediate Hosts ◽  
Component Community ◽  
Parasite Communities ◽  
High Prevalence ◽  
Marine Influence ◽  
River Thames

AbstractAn analysis was undertaken of intestinal helminth communities in flounderPlatichthys flesusfrom two sites on the River Thames. A comparison was made between helminth community richness and diversity from these sites at the component and infracommunity levels. At the component community level, a richer and more diverse parasite community was found in flounder from the Tilbury location (marine influence) than that from the Lots Road location (freshwater influence). At the infracommunity level, more parasite species and parasite individuals per host were found at Lots Road and the percentage of similarity values were low at both locations. Helminth species with high prevalence values in the parasite communities of the flounder are the dominant species in any individual fish, harbouring multi-specific infections. The presence of more invertebrate species, which are intermediate hosts in the helminth life cycle in the Thames, fish vagility and the high prevalence and abundance values ofPomphorhynchus laevisin the flounder, may explain the differences between the two locations.

Evaluation of an exclusion plot design for determining the impacts of native and exotic herbivores on forest understoreys.

2008 ◽  
Vol 30 (2) ◽  
pp. 83 ◽  
Author(s):  
A. Bennett ◽  
G. Coulson
Keyword(s):  
Partial Exclusion ◽  
Wallabia Bicolor ◽  
Sambar Deer ◽  
Cervus Unicolor ◽  
Swamp Wallaby ◽  
Exotic Herbivores ◽  
Plot Design ◽  
Water Catchments

To study the effects of grazing and browsing by Sambar deer (Cervus unicolor), swamp wallaby (Wallabia bicolor) and wombats (Vombatus ursinus) exclosure plots measuring 10 m x 10 m were erected in the Upper Yarra and O'Shannassy water catchments near Melbourne, Victoria. Total exclusion fences and partial exclusion fences were erected. Design details and costs are provided. Operational problems are discussed.

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