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PubMed2000

Insecticide resistance in Anopheles sacharovi Favre in southern Turkey.

We report the resistance to 12 insecticides of specimens of Anopheles sacharovi, both in laboratory cultures and those collected in the malarious areas of Adana, Adiyaman, Antalya, Aydin, and Muğla in southern Turkey. Mortality was higher 24 h after exposure than immediately after exposure but was unaffected by temperature (24 degrees C or 29 degrees C) or the position of the test kit (horizontal or vertical). In Adana, Adiyaman and Antalya, A. sacharovi was susceptible only to malathion and pirimiphos-methyl. In Aydin it was susceptible to both these insecticides as well as to dieldrin, lambda-cyhalothrin, and etofenprox; and in Muğla it was susceptible to dieldrin, fenitrothion, lambda-cyhalothrin, cyfluthrin and etofenprox, as well as to malathion and pirimiphos-methyl.

Animals↗
PubMed2000

Strongyloides stercoralis infection and chronological changes of other soil-transmitted helminthiases in an endemic area of southern Thailand.

A field survey was conducted in 4 primary schools in Nakhon Si Thammarat Province, southern Thailand. By Sasa modified Harada-Mori cultivation method, 1.8% of the schoolchildren were found to be infected with Strongyloides stercoralis, and 25.1% had hookworm infection. By Kato's thick smear method, the overall prevalence of soil-transmitted helminths was 46.8%, being Trichuris trichiura 28.5%, hookworm 18.0%, and Ascaris lumbricoides 5.7%. Fecal examination, performed by Kato's thick smear and culture method, indicated that the prevalence of hookworm infection was 26.9%. The prevalence in the present study was very much lower than many previous reports in the past decade. This may indicate the partial success of the parasite control project in Thailand by mass treatment, improving the sanitation and personal hygiene of the people in the endemic area. In light infection with Trichuris, albendazole administered at a dosage of 200 mg daily for 3 days showed a 48.7% cure rate. When mebendazole was given at 100 mg twice daily for 3 days, its effectiveness was 88.5%. A lower cure rate was obtained (70.0%) in moderate to heavy infection.

Albendazole↗
PubMed2002

[Experience with the combination atovaquone-proguanil in the treatment of uncomplicated Plasmodium falciparum malaria--report of 112 cases].

The purpose of this open non-comparative retrospective study was to evaluate the efficacy and tolerance of Malarone for management of uncomplicated imported Plasmodium falciparum malaria. A total of 112 non-immune adult patients were included between 1999 and 2001. Excellent responses in terms of both clinical symptoms and parasite control were achieved within 4 days after the beginning of treatment in all cases. No recurrence was observed after 28 days of individual followup. Tolerance was satisfactory with no adverse events except for occasional, minor gastrointestinal upset. Based on our experience, Malarone appears to be effective, well-tolerated, and suitable for routine management of uncomplicated imported Plasmodium falciparum malaria.

Adolescent↗
PubMed1997

A view from the grass roots.

A 14-member study team learned firsthand about promotion of family planning and maternal and child health (FP/MCH) in China while in the country during August 17-30, 1997. The self-funded team was headed by JOICFP Chairman Masao Sawaki and included representatives of the public health and preventive health field as well as an official from a Japanese university. The team first traveled to Fangshan District of Beijing where implementation of JOICFP's Integrated Project (IP) began in 1996. A fifth-cycle project area, Fangshan is receiving assistance from IPPF through JOICFP for a period of 3 years. The team moved north to Inner Mongolia Autonomous Region to observe IP activities in Tumud Left Banner of Hohhot City, a second-cycle project area which received support between 1987 and 1989. The third area visited was Yunnan Province in the south, where they observed activities in Jiangchuan County, a third-cycle area which was supported between 1990 and 1992. The comparison between the pilot area and original project areas was rewarding for the team, which noted that activities had continued to expand with support from the people after the 3-year funding period had ceased. In Inner Mongolia, the team noted how parasite control has been effectively used to gain community participation in activities. The project has expanded from 2 towns with a population of 50,000 to cover 19 towns with 343,000 people. In Jiangchuan Country, the IP has expanded from 5 towns with 108,000 people to cover 12 towns with 240,000. Prior to the project launch in 1989, the infant mortality was 60/1000 live births and the hospital delivery rate was 45%. These had improved to reach 23.3/1000 and 87%, respectively, as of 1996.

Asia↗
PubMed1996

Motivating women. Bangladesh.

The Integrated Family Development Program (IFDP) in Bangladesh is expanding from the original project areas in Panchdona Union and Dhalian Union into four neighboring unions under the initiative of the Family Planning Association of Bangladesh (FPAB). The JOICFP-executed project entered its second cycle this year as part of the UNFPA-supported regional Capacity Building for Sustainable Community-based Reproductive Health/Family Planning (FP) Project Emphasizing Quality of Care. The community-based project has won wide acceptance from people at the grass roots who have helped fuel its expansion into other villages. In particular, villagers have welcomed the comprehensive approach of the project which integrates a range of components such as reproductive health including FP/maternal and child health (MCH), income-generating activities, skills and literacy education for women and children and primary health care including parasite control. The success of the project also convinced the Japanese Embassy in Bangladesh to extend funding under the Japanese government's Grant Assistance for Grass Roots Cooperation Projects. With the funds, FPAB will establish a Women's Multipurpose Training Center in Panchdona Union. The sum of US$68,157 was officially handed over to FPAB on March 29 by Japanese Ambassador Yoshikazu Kaneko. The center, which is to open within this year, will contribute to improving reproductive health and promoting the empowerment of women. Once completed, it will be used for such activities as training in health care, literacy and skills for income generation for women's empowerment.

Asia↗
PubMed1976

Effect of antiparasitic medication in ponies on pasture.

Twenty Shetland ponies, 6 to 7 months old, were naturally infected with gastrointestinal nematodes and stomach bots. The ponies were allotted to 2 groups of 10 and were maintained on separate similar pastures that were free of infective larvae at the beginning of the study. The ponies in 1 group were treated monthly for 17 months with a therapeutic dose of a thiabendazole and piperazine mixture; those in the other group were not treated. During the 3rd and 5th months of the experiment, the ponies in the treated group were also given therapeutic doses of dichlorvos to remove bots. Various physical, hematologic, parasitologic, and blood chemical observations were made at weekly intervals. Each group of ponies was weighed at biweekly intervals. At the end of the experiment, the greatest differences between the treated and control ponies were in the mean number of worm eggs in fecal samples (0 vs 1,866 eggs/g), mean body weight (151.9 vs 117.0 kg), mean heart girth (126.5 vs 116.3 cm), mean packed cell volume (36.4 vs 30.8%), and mean serum protein content (8.47 vs 9.33 mg/100 ml), especially beta-globulin content (mean of 1.9 vs 3.4 mg/100 ml). The treated ponies remained clinically normal and were more spirited and more difficult to restrain for blood sampling and weighing than were the untreated controls. Parasitic nematode larvae were not recovered from grass samples from the pasture grazed by the treated ponies, but many such larvae (up to 500/300-g sample) were recovered from grass samples from the pasture grazed by the untreated ponies.

Animals↗
PubMed2002

Antibody profile, interferon-gamma and nutritional status in cryptosporidial infection among school children.

Cryptosporidium parvum is more common in children than in adults. The host responses that induce protective immunity against Cryptosporidium is poorly understood. The present work studied the antibody profile, interferon gamma (IFN-gamma) serum level and nutritional status among infected school children, aged eleven years in a rural school in Abis 8 village. Fecal examination showed nineteen cases only infected with Cryptosporidium and ten children free from parasites (controls). The IgA, IgG and IgM serum levels in infected cases were within normal level, without significant differences as compared to controls. The IgE serum level was significantly high in infected children. The cytokine IFN-gamma was significantly lower in the infected cases as compared to controls. Malnutrition was diagnostic among infected children. It was concluded that malnutrition is the important finding related to Cryptosporidium infection. Malnutrition decreased IFN-gamma the recognized factor in protection from infection and elevated serum IgE level.

Animals↗
PubMed1992

Influence of resistant and susceptible genotype, IL-1, and lymphoid organ on Trichinella spiralis-induced cytokine secretion.

The relative importance of cell-mediated inflammatory responses and antibody-mediated responses in controlling parasitic helminth infection is debated. To study the relationship between these responses and resistance or susceptibility to primary Trichinella spiralis infection, we infected resistant AKR mice and susceptible B10.BR mice and analyzed the lymphokines IL-2, IFN-gamma, and IL-5 produced by their T cells as a function of time and lymphoid organ. IL-2-secretors occurred maximally between days 3 and 6 postinfection, whereas IL-5-secretors peaked between days 6 and 9. Previously, we found that IFN-gamma producers peaked before day 6, whereas IL-4 producers peaked between days 6 and 9. Most cytokine secretors were CD4+. The simultaneous development of IL-2- and IFN-gamma-secreting cells, and IL-4- and IL-5-secreting cells, suggests that the infection may be stimulating T cells to differentiate into cells capable of secreting specific cytokine sets, analogous to the postulated Th1 and Th2 subsets. In the spleen and mesenteric lymph nodes, cells from B10.BR mice secreted more IL-5 than cells from AKR mice, as we found previously for IL-4. For both strains, mesenteric lymph node cells produced more IL-5 than splenocytes. The AKR mesenteric lymph node cells produced more IL-2 than the B10.BR cells, but the reverse occurred in splenocytes. The AKR peripheral lymph node cells also secreted more IFN-gamma than the B10.BR cells, but the strains were equivalent for peritoneal exudate cell IFN-gamma production. Thus, the lymphoid organ microenvironment plays an important role in regulating cytokine-secreting cell development in this system. We also tested the possible regulatory role of IL-1. Exogenous rIL-1 alpha increased IFN-gamma secretion early but not late in mesenteric lymph node cells from both strains; this reflected an increased IFN-gamma-secreting cell frequency, not a change in IFN-gamma mRNA transcript level. Exogenous rIL-1 alpha did not consistently affect IL-2, IL-4, or IL-5 secretion. These data suggest that IL-1 alpha availability in vivo may regulate IFN-gamma-secreting cell development. In sum, early activation of IFN-gamma-secreting T cells in lymph nodes, with little subsequent activation of IL-4- and IL-5-secreting cells, distinguished the resistant from susceptible strain responses to T. spiralis infection, and IL-1 alpha and lymphoid organ environment influence IFN-gamma-secreting cell activation.

Animals↗
PubMed2001

The Malaria Research and Reference Reagent Resource (MR4) Center--creating African opportunities.

The Malaria Research and Reference Reagent Resource Center (MR4) is a program to support the international malaria research community. The primary goal is to improve access to well-characterized quality-controlled parasite, host and vector reagents for standardization of assays and other general research purposes. MR4 is open to all scientists worldwide, however many of its inaugural activities will have a focus in Africa, where the concept for the MR4 was born. Reagents are donated to the MR4 Center by malaria researchers and their institutions for distribution to other investigators special arrangements are also possible for developing reagents in-house, or for coordinating reagents for multi-site studies. In addition to providing reagents, the MR4 also aims to promotoe technology transfer and to foster scientific exchange between new and established malaria researchers. This will be done via workshops, training programs, and dissemination of information (electronic and hard copy). Suggestions for reagents, information resources, or training opportunities are welcome from the research community to make this a responsive, service-oriented program.

Africa↗
PubMed2004

Demographics, management, and welfare of nonracing horses in Prince Edward Island.

There are no detailed, representative, horse-level data about equine management practices in different parts of Canada. To help address this, the demographics, management, and welfare of 312 nonracing horses in Prince Edward Island were examined in a randomized, horse-level survey during summer 2002. Owners completed a pretested questionnaire, and a veterinarian examined each horse. Owners were experienced caregivers and the horses were generally in good condition. Areas for improvement included parasite control, dental and hoof care, and tail docking. The mean fecal egg count was 428 eggs per gram; 76% of owners never removed manure from the pasture. Sixty-two percent of horses had never had a veterinary dental examination. Many horses had hoof defects (excessively long hooves, 26.8%; hoof wall breaks, 32.0%; and white line disease, 8.5%). Many (54.9%) draft horses had docked tails. These results suggest owners might benefit their horses by receiving education in aspects of equine care.

Animal Husbandry↗
PubMed2005

Intravenous amitraz poisoning.

Amitraz, a derivative of dimethylformamidine, is an acariside and insecticide used to control parasites in animals. Amitraz inhibits monoamine oxidase and prostaglandin synthesis and is an alpha-2 adrenergic agonist. Xylene, a mixture of o-, m-, and p-dimethylbenzene, is widely used in industry. A 22-year-old woman was poisoned by an intravenous injection of 5-6 mL of an amitraz formulation (amitraz 12.5% + xylene 57.5%). Clinical findings were coma (Glasgow coma score 3), respiratory depression, hypotension, bradycardia, hematuria, and edema and hyperemia at the injection site. Although her coma and other symptoms quickly resolved, as has been seen in oral and dermal amitraz poisoning, intoxication with higher doses occurring from intravenous injection may result in more serious problems.

Adrenergic alpha-Agonists↗
PubMed1992

Clinical and epidemiologic studies of Chagas' disease in rural communities of Oaxaca, Mexico, and an eight-year followup: II. Chila.

A seroepidemiologic survey conducted in 1971 in the rural Pacific coastal community of Chila in the Mexican state of Oaxaca showed an unusually high prevalence of antibody against the Chagas' disease agent Trypanosoma cruzi. Further studies were undertaken in 1973 and 1981 to (1) determine the pathologic impact of T. cruzi infection in humans, (2) investigate the natural history of the disease, (3) confirm that serologically positive persons were parasitologically positive, and (4) evaluate whether T. cruzi transmission continued into the next decade. This article reports results derived from those studies.

Adolescent↗
PubMed2006

[Effects of tannins in animal nutrition].

Tannins are watersoluble plant polyphenols that precipitate proteins. According to their chemical structure they can be divided into condensed tannins and hydrolysable tannins. Altogether, tannins are reported to have various physiological effects like anti-irritant, antisecretolytic, antiphlogistic, antimicrobial and antiparasitic effects. Phytotherapeutically tannin-containing plants are used to treat nonspecific diarrhoea, inflammations of mouth and throat and slightly injured skins. Studies with ruminants have also demonstrated that the denaturing properties of tannins can possibly be used to improve protein supply to the small intestine. Besides anthelmintic effects of condensed tannins have been observed in sheep and goats. On the other hand high tannin concentrations resulted in reduced animal performances and health disorders as well in ruminants as in monogastriers. Further scientific research is therefore needed to clarify whether tannins can be effectivly used in livestock feeding, for example in prophylaxis of diarrhoea or parasitic control.

Animal Nutritional Physiological Phenomena↗
PubMed1991

Sleeping sickness and tsetse awareness: a sociological study among the Tambo and Lambya of the northern Luangwa Valley, Zambia.

Data on awareness of tsetse flies and knowledge of trypanosomiasis were collected in May, 1988, in the Luangwa Valley of Isoka District in the Northern Province of Zambia. One thousand and nine hundred adult males and females were interviewed. There was a high level of fly awareness among all the respondents, regardless of duration of residence and age groups. Malaria was considered as the most serious illness in the community, and hence overshadowed the impact of trypanosomiasis in the community. Disease awareness gravity cannot be attributed to individual's socio-economic levels.

Adolescent↗
PubMed1990

Stage-dependent effect of deferoxamine on growth of Plasmodium falciparum in vitro.

Deferoxamine (DF) has antimalarial activity that can be demonstrated in vitro and in vivo. This study is designed to examine the speed of onset and stage dependency of growth inhibition by DF and to determine whether its antimalarial activity is cytostatic or cytocidal. Growth inhibition was assessed by suppression of hypoxanthine incorporation and differences in morphologic appearance between treated and control parasites. Using synchronized in vitro cultures of Plasmodium falciparum, growth inhibition by DF was detected within a single parasite cycle. Ring and nonpigmented trophozoite stages were sensitive to the inhibitory effect of DF but cytostatic antimalarial activity was suggested by evidence of parasite recovery in later cycles. However, profound growth inhibition, with no evidence of subsequent recovery, occurred when pigmented trophozoites and early schizonts were exposed to DF. At this stage in parasite development, the activity of DF was cytocidal and furthermore, the critical period of exposure may be as short as 6 hours. These observations suggest that iron chelators may have a role in the treatment of clinical malaria.

Animals↗
PubMed1990

Effect of cyclosporin-A, antimalarial drug, on lymphocyte proliferation of Balb/c mice in vitro.

Cyclosporin-A(CsA) caused inhibition of lymphocyte proliferation at higher doses (5 and 10 micrograms/ml) compared to controls. When spleen cells were preincubated with high doses of CsA and washed, the normal lymphocyte response to stimulation with mitogen (concanavalin-A) and lymphokine (interleukin-2) was not affected. The results indicate that CsA's suppressive effect at higher doses, was a temporary one and potential use of CsA to control parasitic infections should be examined.

Animals↗
PubMed1989

Intestinal parasitic infestation in rural communities: a focus for primary health care in Nigeria.

A study carried out in four villages in two local government areas of Oyo State in the southwestern part of Nigeria, revealed that intestinal helminthiasis is still very prevalent in Nigeria. Ascaris is the most common helminth encountered and multiple infestation is also quite common. Schoolchildren and pre-school children are the greatest sufferers of Ascaris, while students and farmers are the greatest target for hookworm. The usefulness of a community-based distribution programme of health services using trained traditional birth attendants and voluntary health workers for data collection and distribution of antihelminth drugs is discussed.

Adolescent↗