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Wongkamchai S Choochote W Jitpuckdee A Suvannadabba S Loymak S Sakolvaree Y Tapchaisri P Chaicumpa W 《Asian Pacific journal of allergy and immunology / launched by the Allergy and Immunology Society of Thailand》2003,21(4):241-251
In this study we examined the diagnostic potential of monoclonal antibodies (MAb) reactive to antigens of adult Brugia malayi, their microfilariae and antigen of Dirofilaria immitis. The MAb of clone 17E10, which were of IgM isotype, reacted to the inner cuticles and internal content of both male and female worms and also to the sheath and internal content of microfilariae in utero. However, these MAb did not react to the sheath of blood circulating microfilariae. The MAb 17E10 produced a smear pattern between 37 to > 200 kDa in the Western blot analysis against a SDS-PAGE separated extract of B. malayi. The epitopes were non-protein in nature as indicated by their resistance to proteinase-K treatment. The MAb 17E10 were applied in a sandwich ELISA to detect filarial antigen in the buffy coat and plasma of patients. We tested patients with different clinical manifestations of brugian filariasis, i.e. microfilaremia (M), lymphangitis (L) and elephantiasis (E), as well as non-symptomatic inhabitants of a filariasis endemic area (NE), and compared them to samples from non-symptomatic inhabitants of disease non-endemic areas (NNE). It was found that 22 of 31 (70.9%) of M, 7 of 13 (53.8%) of L, 2 of 14 (14.2%) of E, 10 of 100 (10.0%) of NE and none (0%) of the NNE were positive for antigenaemia. The assay was also positive in 14 of 15 (93.3%) blood samples from B. malayi microfilaremic cats and in 7 of 7 (100%) blood samples of Dirofilaria immitis microfilaremic dogs. The so-developed test has a high potential for routine diagnosis of active filariasis, for epidemiological studies in both humans and reservoir animals and for monitoring treatment efficacy. 相似文献
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Tungtrongchitr A Sookrung N Munkong N Mahakittikun V Chinabut P Chaicumpa W Bunnag C Vichyanond P 《Asian Pacific journal of allergy and immunology / launched by the Allergy and Immunology Society of Thailand》2004,22(2-3):115-121
Recently, cockroaches have been established as the second most Important allergen, producing allergic diseases, especially in low socioeconomic populations. In Thailand, about 44-61% of atopic patients were positive to cockroach extract by a skin-prick test. This study examined cockroach allergen levels in relation to cockroach species and allergic diseases in the houses of cockroach-sensitive patients. Sixty households of allergic patients in the Bangkok metropolitan area were surveyed using open- and closed-ended questionnaires. Cockroaches were collected using commercial cockroach traps, while dust samples were obtained from the bedrooms, kitchens and living rooms of the houses using a vacuum cleaner. The cockroaches were counted and their species Identified. The levels of cockroach allergens were determined by specific monoclonal antibodies using a monoclonal antibody-polyclonal antibody based sandwich ELISA kit. Six cockroach species were Identified: Periplaneta americana (American cockroach, 72.15%), Supella longlpalpa (2.75%, found in only one house), Periplaneta brunnea (0.78%), Periplaneta australaslae (0.78%), Neostylopyga rhombifolla (0.78%), Blattella germanica (German cockroach, 0.39%) and nymphs (22.35%). Allergens of the predominant species, P. americana, were detectable in all homes studied, with the highest levels in the kitchen areas. The range of allergen levels in house dust varied from 0.40-162.00 microg per g of dust. The median and mean allergen levels in kitchen dust were 59.16 microg and 62.80 microg per g of dust, respectively, while the median allergen level in bedroom dust was only 15.90 microg per g of dust. The German cockroach allergen (Bla g 2) was undetectable in any of the houses. IN CONCLUSION: P. americana was the most common cockroach and may be the species causing allergic diseases, especially asthma, in Thailand, which differs from the USA and Europe 相似文献
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Srimanote P Ittiprasert W Sermsart B Chaisri U Mahannop P Sakolvaree Y Tapchaisri P Maleewong W Kurazono H Hayashi H Chaicumpa W 《Asian Pacific journal of allergy and immunology / launched by the Allergy and Immunology Society of Thailand》2000,18(1):37-45
Hybridomas secreting monoclonal antibodies (MAbs) to Trichinella spiralis were produced. Myeloma cells were fused with splenocytes of a mouse immunized with excretory-secretory (E-S) antigen of infective larvae. A large percentage of growing hybrids secreted antibodies cross-reactive to many of 23 heterologous parasites tested. Only 6 monoclones (designated 3F2, 5D1, 10F6, 11E4, 13D6 and 14D11) secreted MAbs specific to the E-S antigen and/or a crude extract (CE) of T. spiralis infective larvae. The 6 monoclones secreted IgM, IgG3, IgM, IgG3, IgG3 and IgG3, respectively. Clone 5D1 was selected to mass produce MAbs which were then coupled to CNBr-activated Sepharose CL-4B to prepare an affinity-purified antigen. Dot-blot ELISA with either purified antigen or CE was evaluated. There were 17 patients with acute trichinellosis and 76 individuals convalescing from T. spiralis infection (group 1). Controls were 170 patients with parasitic infections other than trichinellosis (group 2) and 35 healthy parasite-free controls (group 3). CE-ELISA was positive in all group 1 patients. However, sera from many group 2 patients also were reactive (opisthorchiasis-44.2%, schistosomiasis-44%, gnathostomiasis-30%, paragonimiasis-28.6%, taeniasis-27.3%, strongyloidiasis-23.1% and hookworm infections-20%). Affinity-purified antigen was 100% specific, all sera from group 2 and group 3 individuals tested negative. Although 74 of 76 patients (97.4%) with convalescing trichinellosis tested positive, sera from only 3 of 17 patients (17.6%) with acute T. spiralis were reactive. Thus, CE antigen is appropriate when sensitivity is needed, while purified antigen should be used when specificity is required. Dot-blot ELISA is easier to perform, more rapid and less expensive than indirect ELISA. Many samples can be assayed simultaneously, special equipment is not required, and results can be preserved for retrospective analysis. Dot-blot ELISA is therefore the method of choice for the rapid diagnosis of trichinellosis, particularly when more complex laboratory tests are unavailable. 相似文献
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Paul J. Fadel Zhongyun Wang Hitoshi Watanabe Debbie Arbique Wanpen Vongpatanasin Gail D. Thomas 《The Journal of physiology》2004,561(3):893-901
Sympathetic vasoconstriction is normally attenuated in exercising muscles of young men and women. Recent evidence indicates that such modulation, termed functional sympatholysis, may be impaired in older men. Whether a similar impairment occurs in older women, and what role oestrogen deficiency might play in this impairment, are not known. Based on the strong positive correlation between circulating oestrogen levels and functional sympatholysis previously reported in female rats, we hypothesized that sympatholysis would be impaired in oestrogen-deficient postmenopausal women, and that this impairment would be reversed by oestrogen replacement. To test these hypotheses, we measured vasoconstrictor responses in the forearms of pre- and postmenopausal women using near infrared spectroscopy to detect decreases in muscle oxygenation in response to reflex activation of sympathetic nerves evoked by lower body negative pressure (LBNP). In eight premenopausal women, LBNP decreased muscle oxygenation by 20 ± 1% in resting forearm, but only by 3 ± 2% in exercising forearm ( P < 0.05) . In contrast, in eight postmenopausal women, LBNP decreased muscle oxygenation by 15 ± 3% in resting forearm, and by 12 ± 4% in exercising forearm ( P > 0.05) . After 1 month of transdermal oestradiol replacement in these women, the normal effect of exercise to blunt sympathetic vasoconstriction was restored (rest, −19 ± 3%; exercise, −2 ± 3%; P < 0.05 ). These data indicate that functional sympatholysis is impaired in oestrogen-deficient postmenopausal women. The effect of short-term unopposed oestrogen replacement to correct this impairment implicates a role for oestrogen in the sympathetic neural control of muscle haemodynamics during exercise. 相似文献
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Jatuporn S Sangwatanaroj S Saengsiri AO Rattanapruks S Srimahachota S Uthayachalerm W Kuanoon W Panpakdee O Tangkijvanich P Tosukhowong P 《Clinical hemorheology and microcirculation》2003,29(3-4):429-436
The purpose of this study was to compare the short-term effects of an intensive lifestyle modification (ILM) program on lipid peroxidation and antioxidant systems in patients with coronary artery disease (CAD). Twenty-two patients in the control group continued to receive their conventional treatment with lipid-lowering drugs, whereas 22 patients in the experimental group were assigned to intensive lifestyle modification (ILM) without taking any lipid-lowering agent. The ILM program comprised dietary advice on low-fat diets, high antioxidants and high fiber intakes, yoga exercise, stress management and smoking cessation. After 4 months of intervention, patients in the experimental group revealed a statistically significant increase in plasma total antioxidants, plasma vitamin E and erythrocyte glutathione (GSH) compared to patients in the control group. There was no significant change in plasma malondialdehyde (MDA), a circulating product of lipid peroxidation, in either group. We concluded that the ILM program increased circulating antioxidants and reduced oxidative stress in patients with CAD. 相似文献
8.
Watt G Saisorn S Jongsakul K Sakolvaree Y Chaicumpa W 《The Journal of infectious diseases》2000,182(1):371-374
There is no consensus on the benefits of treatment with any specific anthelminthic compound on muscle-stage trichinosis. A double-blind, placebo-controlled comparison was done of 3 antiparasitic drugs during an outbreak of trichinosis in Chiangrai Province, northern Thailand. Forty-six adults were randomized to receive 10 days of oral treatment with mebendazole (200 mg twice a day), thiabendazole (25 mg/kg twice a day), fluconazole (400 mg initially, then 200 mg daily), or placebo. All patients received treatment to eradicate adult intestinal worms. Trichinella spiralis infection was proved parasitologically in 19 (41%) of 46 patient and by serodiagnosis in all cases. Significantly more patients improved after treatment with mebendazole (12/12) and thiabendazole (7/7) than after treatment with placebo (6/12; P<.05) or fluconazole (6/12). Muscle tenderness resolved in more patients treated with thiabendazole and mebendazole than in those treated with placebo (P<.05). However, 30% of volunteers could not tolerate the side effects of thiabendazole. In summary, Trichinella myositis responds to thiabendazole and to mebendazole. 相似文献
9.
Saengjaruk P Sakolvaree Y Maneewatch S Tomanakan K Tongtawe P Tapchaisri P Chaicumpa W 《Asian Pacific journal of allergy and immunology / launched by the Allergy and Immunology Society of Thailand》2007,25(4):225-232
Existing serological methods for diagnosis of leptospirosis are still unsatisfactorily due mainly to their low accuracy. In this study, serum samples of 18 clinically diagnosed-, IgM dipstick positive-, MAT positive-leptospirosis patients (group 1) were analyzed by IgG Western blotting against SDS-PAGE separated-whole cell homogenates of pathogenic and non-pathogenic Leptospira spp. belonging to 20 serovars of 15 serogroups. The samples of group 1 were collected from the patients at days 3 to 10 after the fever onset (fist samples). Second and third samples could be obtained from 4 patients. Sera of the 22 patients with other febrile illnesses (group 2) and 22 healthy counterparts (group 3) were used as patient- and normal- controls, respectively. Irrespective of the serovar or serogroup of the pathogenic Leptospira spp. used as antigen in the Western blotting, all of the 18 sera of patients with leptospirosis (group 1) gave characteristic diffuse antigen-antibody reactive bands located at approximately 35-38 and 22-26 kDa; and thus 100% diagnostic sensitivity of the Western blot assay. Some serum samples of the leptospirosis patients also reacted to components located at 80-100, approximately 70, 60, 54, and 48 kDa. More bands or the early recognized bands with increased intensity were observed when tested the second and third samples. The characteristic bands were not seen when homogenates of L. biflexa, serogroup Semaranga, serovar Patoc (saprophytic) and L. biflexa, serogroup Andamana, serovar Andamana (non-pathogenic but can infect host) were used in the assay. Sera of groups 2 and 3 did not react to the components at the seven locations implying 100% diagnostic specificity of the IgG Western blot assay. While awaiting validation with more patients' samples, the IgG Western Blot analysis aiming at the detection of the characteristic antigen-antibody reactive bands described in this study has high potential for early, rapid, simple and accurate diagnosis of human leptospirosis. 相似文献