FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2120583504> ?p ?o ?g. }

• W2120583504 endingPage "72" @default.
• W2120583504 startingPage "167" @default.
• W2120583504 abstract "Organisms of the genera Cryptosporidium and Giardia are enteric parasites that are responsible for cryptosporidiosis and giardiasis respectively. They are characterised by profuse diarrhoea, abdominal pain and cramping. The symptoms can be fatal for immunodepressed subjects and children because these are opportunistic pathogens. These pathogenic infections are rampant in developing countries due to the unhygienic and improper disposal of wastewater and the use of surface water as the major sources of potable water. Little information is available about the resistant forms of these microorganisms in the hydrosystems of Cameroon in particular and other sub-Saharan ecosystems in general. The aim of this research was to isolate, identify, and measure these forms of these emerging protozoa in the waste and surface waters of Yaoundé, Cameroon. Giardia spp cysts were identified by Lugol iodine staining, and the Cryptosporidium spp oocysts by the Ziehl-Neelsen technique. The cysts were oval in structure and varied in length from 7 um to 12.0 um. Axostyles were visible along the median line and nuclei were present. The oocysts were round in structure and varied in diameter from 4 um to 6 um. A double cell wall was seen in the apicomplexa. The highest concentrations of Giardia spp cysts were 560 cysts/L in the surface water and 650 cysts/L in the residual effluent, while the corresponding figures for Cryptosporidium spp were 1,110 oocysts/L in the stream and 1,500 oocysts/L in the effluent. The cyst and oocyst counts were higher in the direct effluent because they are released directly into the wastewater by feces, while they are diluted in the surface water, reducing their abundance. Turbidity has a significant effect (p<0.05) on the population dynamics of these microorganisms, thereby indicating the importance of suspended or colloidal particles in the dissemination of these pathogens in aquatic media. The suspended particles in the wastewater adsorb the oocysts and cysts, probably because of the interactions between the electric charges carried by suspended particles and those present at the surface of the parasites. The positive correlation observed between these parasites and ammonia may account for some of the die-off of these resistant forms, because ammonium ions in water are known to inactivate trophozoites and sporozoites present in cysts and oocysts. This may be due to the permeability of the protozoan membrane to the ammonium ion and other alkaline earth metals present in aqueous form in the biotope. These parasite forms in these media represent a considerable health risk to the inhabitants of the study zone who depend on this surface water for drinking. The small size of these parasitic forms, the nonfunctional water purification stations and ineffective water treatment systems expose the community to outbreaks of giardiasis and cryptosporidiosis." @default.
• W2120583504 created "2016-06-24" @default.
• W2120583504 creator A5013813209 @default.
• W2120583504 creator A5035074555 @default.
• W2120583504 creator A5053546508 @default.
• W2120583504 creator A5068758409 @default.
• W2120583504 creator A5076390827 @default.
• W2120583504 date "2008-01-09" @default.
• W2120583504 modified "2023-09-23" @default.
• W2120583504 title "[Measuring resistant forms of two pathogenic protozoa (Giardia spp and Cryptosporidium spp) in two aquatic biotopes in Yaoundé (Cameroon)]." @default.
• W2120583504 doi "https://doi.org/10.1684/san.2007.0077" @default.
• W2120583504 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18180218" @default.
• W2120583504 hasPublicationYear "2008" @default.
• W2120583504 type Work @default.
• W2120583504 sameAs 2120583504 @default.
• W2120583504 citedByCount "3" @default.
• W2120583504 countsByYear W21205835042016 @default.
• W2120583504 crossrefType "journal-article" @default.
• W2120583504 hasAuthorship W2120583504A5013813209 @default.
• W2120583504 hasAuthorship W2120583504A5035074555 @default.
• W2120583504 hasAuthorship W2120583504A5053546508 @default.
• W2120583504 hasAuthorship W2120583504A5068758409 @default.
• W2120583504 hasAuthorship W2120583504A5076390827 @default.
• W2120583504 hasConcept C147455438 @default.
• W2120583504 hasConcept C2777271458 @default.
• W2120583504 hasConcept C2778566189 @default.
• W2120583504 hasConcept C2778877831 @default.
• W2120583504 hasConcept C2780626423 @default.
• W2120583504 hasConcept C39432304 @default.
• W2120583504 hasConcept C42972112 @default.
• W2120583504 hasConcept C61716771 @default.
• W2120583504 hasConcept C71924100 @default.
• W2120583504 hasConcept C86803240 @default.
• W2120583504 hasConcept C87717796 @default.
• W2120583504 hasConcept C89423630 @default.
• W2120583504 hasConceptScore W2120583504C147455438 @default.
• W2120583504 hasConceptScore W2120583504C2777271458 @default.
• W2120583504 hasConceptScore W2120583504C2778566189 @default.
• W2120583504 hasConceptScore W2120583504C2778877831 @default.
• W2120583504 hasConceptScore W2120583504C2780626423 @default.
• W2120583504 hasConceptScore W2120583504C39432304 @default.
• W2120583504 hasConceptScore W2120583504C42972112 @default.
• W2120583504 hasConceptScore W2120583504C61716771 @default.
• W2120583504 hasConceptScore W2120583504C71924100 @default.
• W2120583504 hasConceptScore W2120583504C86803240 @default.
• W2120583504 hasConceptScore W2120583504C87717796 @default.
• W2120583504 hasConceptScore W2120583504C89423630 @default.
• W2120583504 hasIssue "3" @default.
• W2120583504 hasLocation W21205835041 @default.
• W2120583504 hasOpenAccess W2120583504 @default.
• W2120583504 hasPrimaryLocation W21205835041 @default.
• W2120583504 hasRelatedWork W1601423290 @default.
• W2120583504 hasRelatedWork W1994757132 @default.
• W2120583504 hasRelatedWork W2016148313 @default.
• W2120583504 hasRelatedWork W2023899484 @default.
• W2120583504 hasRelatedWork W2044785017 @default.
• W2120583504 hasRelatedWork W2086449930 @default.
• W2120583504 hasRelatedWork W2149607409 @default.
• W2120583504 hasRelatedWork W2151441479 @default.
• W2120583504 hasRelatedWork W2240552772 @default.
• W2120583504 hasRelatedWork W2269972658 @default.
• W2120583504 hasRelatedWork W2465923021 @default.
• W2120583504 hasRelatedWork W2511953335 @default.
• W2120583504 hasRelatedWork W2742181411 @default.
• W2120583504 hasRelatedWork W2768506434 @default.
• W2120583504 hasRelatedWork W2799868744 @default.
• W2120583504 hasRelatedWork W3108397070 @default.
• W2120583504 hasRelatedWork W3126492227 @default.
• W2120583504 hasRelatedWork W3183845760 @default.
• W2120583504 hasRelatedWork W962495789 @default.
• W2120583504 hasRelatedWork W2511654085 @default.
• W2120583504 hasVolume "17" @default.
• W2120583504 isParatext "false" @default.
• W2120583504 isRetracted "false" @default.
• W2120583504 magId "2120583504" @default.
• W2120583504 workType "article" @default.