Does ancylostomiasis favour the intensity of Schistosoma mansoni infection?

Chamone, Munir; Marques, CP; Alves-Oliveira, I.

doi:10.1016/0035-9203(86)90301-9

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…Individuals with hookworm infection are more likely to be infected with A. lumbricoides and T. trichiura in multiple studies world-wide (88). Positive associations between hookworm and S. mansoni infection have also been seen within communities (89,90), though not across communities (91). While some of these observed associations may be explained by overlapping patterns of exposure (89), variation in susceptibility to multiple species infection may also be important.…”

Section: Hookworms and Co-infectionmentioning

confidence: 99%

The immunoepidemiology of human hookworm infection

Quinnell

Bethony

Pritchard

2004

Parasite Immunology

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Advances in hookworm immunoepidemiology are reviewed. Recent studies demonstrate a mixed Th1/Th2 response in human hookworm infection, with immunosuppression of specific and nonspecific IFN-gamma responses. There is increasing evidence for protective immunity in human hookworm infection, including anti-larval IL-5- and IgE-dependent mechanisms, and for immunological interactions between hookworm infection and other diseases.

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Section: Hookworms and Co-infectionmentioning

confidence: 99%

The immunoepidemiology of human hookworm infection

Quinnell

Bethony

Pritchard

2004

Parasite Immunology

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“…In human Ascaris infection is report as associated with protection from cerebral malaria (Nacher et al, 2000;2011). Similar, other studies have suggested positive interaction between S. mansoni species and hookworm (Chamone et al, 1986;1990;Webster et al, 1997;Keiser et al, 2002;Raso et al, 2004;Pullan et al, 2010). A graphical presentation of the ordered score prevalence of S. mansoni infection data, enables us to view the data graphically which can help us understand how the S. mansoni data are distributed under the influence of Taenia spp.…”

Section: Resultsmentioning

confidence: 57%

Differences between infection with Schistosoma mansoni, Taenia spp. and Soil-Transmitted Helminths in Brazil and Africa environments viewed from an evolutionary perspective

Chamone¹,

Atuncar²,

Melo³

2020

Sci. Elec. Arch.

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In Brazil, when prevalence data were examined using simple summary statistics, there is a negative association between prevalence of Taenia spp. infection and Schistosoma mansoni or soil-transmitted helminths (STH) irrespective to routes of infection. That does not occur in African data. However, they vary considerably when plotted. So, in data collected on Brazilian area, it to show in ordered (smallest first) scores prevalence of STH infections both long lag phase in prevalence of STH infecting by oral route (Ascaris and Trichuris), and into STH infecting by skin route (hookworm and Strongyloides). To the other side, African study it show smaller lag phase in prevalence of STH infecting by oral route or into STH infecting by skin route. Darwinian, it was suggested Taenia spp. and STH, inhabiting a nonhuman environment which became so suitable for them according to their biological needs, their develop by means of natural selection.

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“…Notedly, it has been reported that in adult groups, "specific" complement activating antibody titres (antibodies against adult worms) were lower in individuals with both S. mansoni and hookworm infections 1 , and this co-infection is associated with higher intensity of schistosomiasis 10,11 . However, the prevalence of hookworms was similarly noticed in faeces obtained from thermolabile and thermostable schistosomiasis samples in both age grades examined.…”

Section: Discussionmentioning

confidence: 99%

Thermostability of heterophile antibodies from human sera infected with Schistosoma mansoni and geo-helminths: an immuno-metric statistical analysis

Chamone

Atuncar

Coelho³

2006

Rev. Inst. Med. trop. S. Paulo

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SUMMARYAntibody in human sera that induces lysis of sheep erythrocytes in hemolytic assay was investigated. The present study showed that the presence in serum of the thermostable cytolytic anti-sheep red blood cells antibodies is dependent on the Schistosoma mansoni infection, and this is more frequent in adults than in children. The thermostable characteristic of hemolysins in normal sera was not dependent on the presence of Ascaris lumbricoides, Trichuris trichiura or hookworm geo-helminths. Further, thermostable complement-activating heterophile antibodies were noticed in children in association with massive number of S. mansoni eggs. The results were obtained by using the z-and the chi-square tests. The z-test allows us to formulate a one-sided alternative, i.e., a tendency of one of the attributes. On the other hand, the chi-square test analyzes the independence between attributes by using a contingency table. Besides the obtained results being interesting in the field of schistosomiasis mansoni, they can provide a new insight into the use of statistics in medical science.

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Does ancylostomiasis favour the intensity of Schistosoma mansoni infection?

Cited by 8 publications

References 1 publication

The immunoepidemiology of human hookworm infection

The immunoepidemiology of human hookworm infection

Differences between infection with Schistosoma mansoni, Taenia spp. and Soil-Transmitted Helminths in Brazil and Africa environments viewed from an evolutionary perspective

Thermostability of heterophile antibodies from human sera infected with Schistosoma mansoni and geo-helminths: an immuno-metric statistical analysis

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