control of snail hosts of bilharziasis in egypt. 3. effect of the organophosphorous insecticide, dursban, on carbohydrate metabolism of the snails biomphalaria alexandria and bulinus truncatus.the effects of the organophosphorous insecticide, dursban, on aerobic oxidation, glycolysis, glucose utilization and gluconeogenesis in snails tissues were determined. dursban had a biphasic effect on the aerobic oxidation of succinate, glutamate + malate and tmpd + ascorbate while it had only an inhibitory action on pyruvate oxidation. the compound significantly inhibited glycolysis, glucose utilization and gluconeogenesis when used at high concentrations (ten times higher than its lc50). howev ...197552436
schistosoma haematobium egg counts in a nile delta community.a study of schistosoma haematobium egg counts was made in a community near alexandria. this showed that the intensity of infection was similar to that which has been reported in some of the comparable surveys which have been made in sub-saharan africa. this finding highlights the need for further studies in defined communities of the pathogenicity of the infection. the egg counts of subjects who recalled treatment with tartar emetic within the last two years were similar to those who said they h ...1977605463
control of snail hosts of bilharziasis in egypt. 2. effect of triphenyltin hydroxide (du-ter) on carbohydrate metabolism of the snails biomphalaria alexandria and bulinus tuncatus.previous work has shown that the aerobic oxidation of certain intermediates of krebs cycle by the snail b. alexandrina and b. truncatusis inhibited by tpt. this paper reports data on the effect of tpt on glucose utilization, glycolysis, glycogen content, and glucone ogenesis in snail tissue preparations. the compounds at its lc50 inhibited gluconeogenesis, stimulated glycolysis and markedly reduced the glycogen content and glucose utilization in both snails. however, the effects were more pronou ...19751181172
the epidemiology of schistosoma haematobium and s. mansoni infections in the egypt-49 project area. 4. measurement of the incidence of bilharziasis.the measurement of incidence, or the rate at which people become positive, for schistosoma haematobium and s. mansoni was carried out in four parts of the egypt-49 project area near alexandria. for s. haematobium, rates as high as 22.8% per year were found for children 0-6 years old in a rural area; in the same area, the incidence of s. mansoni was 8.5% per year. the true incidence is underestimated because many cases become negative spontaneously. this loss rate of s. haematobium cases is 0.476 ...19665297629
the effect of area-wide snail control on the endemicity of bilharziasis in egypt.molluscicides applied to two areas near alexandria had a significant effect in reducing both incidence and prevalence of schistosoma haematobium and s. mansoni infections. no decrease in either measure of endemicity was found in an adjacent untreated area. bayluscide and sodium pentachlorophenate were equally effective in interrupting the transmission of s. haematobium, but bayluscide was more effective against s. mansoni, probably because of the difficulty of applying sodium pentachlorophenate ...19665297632
schistosomiasis and the risk of bladder cancer in alexandria, egypt.the relationship between history of schistosomiasis and bladder cancer risk was investigated using data from a case-control study conducted between january 1994 and july 1996 in alexandria, egypt. cases were 190 subjects with incident, histologically confirmed invasive cancer of the bladder, and controls were 187 subjects admitted to hospital for acute, non-neoplastic, non-urinary tract conditions. eighty-six cases (45%) vs 69 controls (37%) reported a history of urinary schistosomiasis. the cor ...19989569060
immunolocalization of schistosoma mansoni and schistosoma haematobium antigens reacting with their egyptian snail vectors.the reaction of the haemolymph and the tissue of infected intermediate hosts, biomphalaria alexandrina and bulinus truncatus to schistosoma mansoni and s. haematobium antigens were investigated using the indirect immunoperoxidase technique. a new technique, agarose cell block was used in collection of haemolymph which helped in collecting plenty of well formed cells in comparison to the ordinary one using the cytospin. collected haemolymph and prepared tissues of uninfected and infected b. alexa ...200718383803
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