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Search Results: 1 - 10 of 1123 matches for " Helene Mariko; Forattini "
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Paridade e influência do vento sobre a freqüência de Anopheles marajoara, S?o Paulo
Kakitani,Iná; Ueno,Helene Mariko; Forattini,Oswaldo Paulo;
Revista de Saúde Pública , 2003, DOI: 10.1590/S0034-89102003000300003
Abstract: objective: to evaluate the impact of wind velocity on the behavior of an. marajoara population and its parity. methods: collections were made bimonthly from january 1999 to february 2000 in the municipality of ilha comprida, brazil. adult mosquitoes were captured with a battery hand aspirator. mann-whitney test was applied to verify the wind impact on mosquito behavior. polovodova technique and christophers and mer's follicular development analysis were used to determine parity. results: a total of 11,833 mosquitoes were captured, including 3,072 an. marajoara specimens. the peak of activity of an. marajoara occurred from 2 to 5 am. amongst 1,006 an. marajoara females who had their ovarioles dissected, it was found 530 (52.7%) nulliparous, 432 (42.9%) uniparous, 24 (2.4%) biparous and 1 multiparous. according to christophers and mer analysis, 982 (97.6%) had their follicles in phases i and ii, 7 in phases iii and iv, and 17 in phase v. the frequency of an. marajoara was significantly lower when wind velocity was 3 km/h or more or below 3 km/h. conclusions: an. marajoara mosquitoes were more active at night. about 50% of dissected an. marajoara females were oniparous. another important finding was the high proportion of females (97.6%) with follicles in the christophers and mer's phases i and ii, suggesting the presence of gonotrophic concordance. wind velocity equal or higher than 3 km/h considerably reduced the frequency of an. marajoara.
Emergência de Aedes albopictus em recipientes artificiais
Forattini,Oswaldo Paulo; Kakitani,Iná; Ueno,Helene Mariko;
Revista de Saúde Pública , 2001, DOI: 10.1590/S0034-89102001000500008
Abstract: objective: to estimate the potential of daily average emergence of aedes albopictus adult females. since this species is very close to aedes aegypti , although it has not been implicated in the spread of dengue in brazil. methods: observations were carried out fortnightly and incessantly in pedrinhas, in the state of s?o paulo, brazil, between 1996 and 2000. breeding productivity was measured using the emergence index (e). two large reservoirs of more than 10 liters of water were used, and their permanent character was assured by replacing water every time its level was low. the other reservoirs were six pots, initially filled out with a liter of distilled water. the water content was constantly replaced after every collection, regardless of rainfall. the associations with climatic factors were calculated using the correlation index of pearson. results: the emergence (e) in the uncovered reservoir was 66.5, much higher than the one found at the covered water tank, which was 12.2. the permanent character of both breeding settings was assured by water replacement when there was a decrease in the water levels. there was no significant association between rainfall and temperature variations. it was observed in some of the six pots an association between rainfall and the emergence index, with a lesser productivity in the months with lower rainfalls. that period, june to november, would be the most propitious time to perform the mechanical removal of the containers. conclusion: the differences in productivity of the two permanent reservoirs could be explained, at least in part, to the existence of organic matter that allows larval growth. regarding the temporary containers, it seems that the best time for cleaning up would be during the dry months. having organic matter in the water of breeding settings could enable the isolation of these two mosquito populations, aedes aegypti and aedes albopictus.
Paridade e influência do vento sobre a freqüência de Anopheles marajoara, S o Paulo
Kakitani Iná,Ueno Helene Mariko,Forattini Oswaldo Paulo
Revista de Saúde Pública , 2003,
Abstract: OBJETIVO: Avaliar a influência da velocidade do vento sobre o comportamento da popula o de Anopheles marajoara e sua paridade. MéTODOS: As capturas foram feitas a cada dois meses, de janeiro de 1999 a fevereiro de 2000, no município de Ilha Comprida, no Estado de S o Paulo, com utiliza o de aspirador manual movido à pilha. Utilizou-se o teste de Mann-Whitney para verificar a possível influência do vento sobre o comportamento dos mosquitos capturados. Para determinar a paridade, utilizou-se a técnica de Polovodova e a análise do desenvolvimento folicular de Christopher e Mer. RESULTADOS: Foram capturados 11.833 mosquitos, dos quais 3.072 foram de An. marajoara. Observou-se pico de atividade hematofágica de An. marajoara no período das 2:00 às 5:00h. Das 1.006 fêmeas dissecadas, 530 (52,7%) foram nulíparas, 432 (42,9%) uníparas, 24 (2,4%) bíparas e uma multípara; 982 (97,6%) apresentavam seus folículos nas fases I/II de Christopher e Mer, sete nas fases III/IV, e 17 na fase V. Verificou-se diferen a significativa entre a freqüência de An. marajoara diante de vento com velocidades iguais ou superiores a 3 km/h e para medidas inferiores a 3 km/h. CONCLUS ES: An. marajoara apresentou atividade hematofágica notadamente noturna. Verificou-se que aproximadamente 50% das fêmeas de An. marajoara dissecadas eram oníparas. O dado, associado à elevada porcentagem (97,6%) de fêmeas com folículos nos estágios I e II de Christopher e Mer, sugere a existência de concordancia gonotrófica. A freqüência de An. marajoara sofreu considerável redu o diante de ventos com velocidade igual ou superior a 3 km/h.
Emergência de Aedes albopictus em recipientes artificiais
Forattini Oswaldo Paulo,Kakitani Iná,Ueno Helene Mariko
Revista de Saúde Pública , 2001,
Abstract: OBJETIVO: Estimar o potencial de emergência média diária de adultos fêmeas de Aedes albopictus, espécie que, embora n o tenha sido incriminada, até o momento, como vetora de dengue no Brasil, é muito próxima de Aedes aegypti. MéTODOS: As observa es foram realizadas quinzenalmente e de maneira ininterrupta na localidade de Pedrinhas, Estado de S o Paulo, no período de 1996 a 2000. Para estimar a produtividade dos criadouros, mediu-se o índice de emergência (E). Foram utilizados dois reservatórios grandes e permanentes com mais de 10 litros de água, para que o líquido faltante fosse reposto a cada coleta. Os demais reservatórios (seis) foram representados por cubas com capacidade de 1 litro, sendo que, a cada cuba, foi adicionado 1 litro de água destilada. Posteriormente, a cada coleta, o volume de água foi reposto independentemente da pluviosidade. As associa es foram estudadas pelo índice de correla o de Pearson. RESULTADOS: A emergência (E) do reservatório mantido descoberto foi de 66,5, maior do que a emergência da caixa d'água coberta, que foi de 12,2. Ambos os criadouros tiveram o caráter de "permanente" assegurado pela reposi o do líquido, caso o volume diminuísse ao longo do tempo de observa o. N o houve associa o importante com as condi es de pluviosidade e de temperatura. Os recipientes menores foram representados por cubas, em número de seis. Algumas delas mostraram associa o com as condi es meteorológicas e os índices de emergência (E), indicando os meses de menor pluviosidade como menos produtivos. Esses meses, de junho a novembro, seriam o lapso de tempo mais propício para realizar a opera o de remo o mecanica de recipientes. CONCLUS O: As diferen as encontradas na produtividade dos dois reservatórios permanentes poder o, ao menos parcialmente, ser explicadas pela presen a de matéria organica que serviria para a alimenta o larval. Quanto aos recipientes transitórios, sup e-se que a época de menor pluviosidade seria a mais propícia para executar a limpeza dos quintais domésticos. Com isso, seria mais eficaz a diminui o da prolifera o de mosquitos na esta o seguinte. A presen a de matéria organica na água dos criadouros poderá, se vegetal ou animal, trazer subsídios à separa o das popula es de Aedes aegypti e de Ae. albopictus.
Distribui??o vertical e sazonal de Anopheles (Kerteszia) em Ilha Comprida, SP
Ueno,Helene Mariko; Forattini,Oswaldo Paulo; Kakitani,Ina;
Revista de Saúde Pública , 2007, DOI: 10.1590/S0034-89102007000200014
Abstract: objective: anopheles bellator e an. cruzii are vectors of the so-called bromeliad-malaria, typical of conserved areas. the objective was to evaluate the seasonal and vertical distribution of these anophelines, aiming at assessing the risk of malaria transmission. methods: in the municipality of ilha comprida, southeastern brazil, cdc light traps baited with dry ice were placed fortnightly from 17:00 to 20:00, at one, six and 12 meters high from september 2001 to september 2002. association between an. bellator and an. cruzii densities and weather were assessed by spearman coefficient and comparisons among heights and species densities were made by mann-whitney non-parametric test. results: a total of 55,226 mosquitoes were caught: 1,341 were an. bellator (2.4% of culicidae), 278 at one meter, 261 at six meter and 802 at 12m high. following the same sequence, an. cruzii was represented by 452, 1,032 and 4,420 adults, totalizing 5,904 mosquitoes (10.7%). there was a positive correlation between densities of both species and daily maximum temperature, and between density of an. bellator and thermal amplitude. the densities were higher for both species at tree canopy. at the three levels, the density of an. cruzii was higher. conclusions: the acrodendrophilic behavior of these species was confirmed, remarkably in an. cruzii. after aggressive measures of control, these anophelines have remained in this region, but they are not under entomological surveillance. the persistent transmission of malaria and increasing tourism activities in this region highlight the need for surveillance of these species.
Role of Anopheles (Kerteszia) bellator as malaria vector in Southeastern Brazil (Diptera: Culicidae)
Forattini, Oswaldo Paulo;Kakitani, Iná;Santos, Roseli La Corte dos;Ueno, Helene Mariko;Kobayashi, Keilla Miki;
Memórias do Instituto Oswaldo Cruz , 1999, DOI: 10.1590/S0074-02761999000600001
Abstract: new research concerning anopheles bellator in the southeast of the state of s?o paulo, brazil, are reported. adult females of this mosquito showed remarkable endophily and endophagy which was even greater than an. cruzii. the epidemiological role of this anopheline as a malaria vector is discussed.
Role of Anopheles (Kerteszia) bellator as malaria vector in Southeastern Brazil (Diptera: Culicidae)
Forattini Oswaldo Paulo,Kakitani Iná,Santos Roseli La Corte dos,Ueno Helene Mariko
Memórias do Instituto Oswaldo Cruz , 1999,
Abstract: New research concerning Anopheles bellator in the southeast of the State of S o Paulo, Brazil, are reported. Adult females of this mosquito showed remarkable endophily and endophagy which was even greater than An. cruzii. The epidemiological role of this anopheline as a malaria vector is discussed.
Potencial sinantrópico de mosquitos Kerteszia e Culex (Diptera: Culicidae) no Sudeste do Brasil
Forattini,Oswaldo Paulo; Kakitani,Iná; Santos,Roseli La Corte dos; Kobayashi,Keilla Miki; Ueno,Helene Mariko; Fernández,Zoraida;
Revista de Saúde Pública , 2000, DOI: 10.1590/S0034-89102000000600001
Abstract: objective: to determine the synanthropic potential of anopheles bellator and an. cruzii in a village close to a wild environment. for comparative purposes, culex quinquefasciatus and cx. sacchettae populations were also investigated. methods: from october 1996 to january 2000, vectors investigations were carried out in pedrinhas village, southeastern of s. paulo state, brazil, through systematic collections with human bait, air aspirations and shannon traps. the synanthropic index was estimated using nuorteva's indices plus the mihályi's endophylic factor. results: attraction principle was s=35.7 for both kerteszia species at the peridomiciliary environment through human bait. cx. sacchettae showed a sr ratio of 12.8 with a degree of synanthropy. however active search through the aspiration method yielded negative s values, such as -43.1 for an. bellator and -48.2 for an. cruzii. for cx. sacchettae that value was -3.0. these values were calculated when +100.00 was given to cx. quinquefasciatus, which showed the highest synanthropic habits, corresponding to s =+93.8. conclusions: the present data allow to conclude that what was observed until now for isolated rural dwellings is valid for small villages at the same conditions. this means that female kerteszia adults tend to be in anthropic environment for blood seeking. after that, they return to the surrounding natural environment of the village. regarding cx. sacchettae, they seem to have an anthropic adaptation tendency.
Comportamento de Aedes albopictus e de Ae. scapularis adultos (Diptera: Culicidae) no Sudeste do Brasil
Forattini,Oswaldo Paulo; Kakitani,Iná; Santos,Roseli La Corte dos; Kobayashi,Keilla M; Ueno,Helene M; Fernandez,Zoraida;
Revista de Saúde Pública , 2000, DOI: 10.1590/S0034-89102000000500005
Abstract: objective: aedes albopictus and ae. scapularis were found living together in the pedrinhas village, southeastern of s?o paulo state, brazil. this finding was a good opportunity to make observations about the mosquitoes' behavior. methods: from october 1996 to january 2000 observations were carried out through systematic collections with human bait, environment aspirations and shannon trap utilization. synanthropy was estimated by the nuorteva index and synanthropic ratios. results: the 87 collections with human bait yield 872 females adults. williams' means, multiplied by 100, were 118 and 21 for ae. albopictus at the 7 am-6pm and 6pm-8pm hours, respectively, 100 and 106 for ae. scapularis at the same timetable but there was an evening peak. through environmental aspirations, a total of 1,124 adults samples was collected, 226 ae. albopictus samples and 898 ae. scapularis samples. the period between the months of january-may was the one with higher yield for both mosquitoes. there was no ae. albopictus in the shannon trap operated inside the adjacent forest. regarding the sinanthropy, that culicid showed the higher index values, while ae. scapularis was ubiquitous. conclusions: the data obtained allows to form the hypothesis that ae. scapularis females may have a diapause phase in the resting places and after that period they will retake the hematophagy habit. that might explain the higher activity at the humen bait during the dry months, corresponding to the period of july-october.
Evaluation of Oxidative Stress, Antioxidant Power, and Antioxidant Potential of Breastmilk of Breast-Feeding Mothers  [PDF]
Naoko Kuramoto, Mariko Kitagawa
Health (Health) , 2017, DOI: 10.4236/health.2017.98083
Abstract: Purpose: The purpose of this study was to evaluate oxidative stress, antioxidant power, and antioxidant potential of breastmilk of breast-feeding mothers from the early postpartum period to the first 3 months postpartum, and to examine the dynamics and the relationships among them. Method: For 47 pu-erperant women who gave vaginal birth without any pregnancy complications, the oxidative stress levels (d-ROMs levels) and antioxidant power (BAP levels) in the maternal plasma as well as antioxidant potential of breastmilk (BAP levels in breastmilk) were measured 3 times, i.e., in the early puerperium (4 or 5 days after giving birth), one month after giving birth, and 3 months after giving birth. Results: The d-ROMs levels in the maternal plasma were significantly high in the early puerperium (p < 0.001), and decreased gradually in the post-partum period (p < 0.001). On the other hand, BAP levels were significantly low in the early puerperium (p < 0.001), and increased to the almost normal level during one month after giving birth. BAP levels in breastmilk were significantly high in the early puerperium compared with the other periods (p < 0.001), and decreased gradually until 3 months after giving birth (p < 0.001). BAP levels in breastmilk in the early puerperium were higher compared with the maternal BAP levels, and there was a positive correlation between BAP levels in breast-milk and those in the maternal plasma (p < 0.05). Discussion: Regarding the oxidative stress and the antioxidant defense system of breast-feeding mothers, the d-ROMs level was highest and the BAP level was lowest in the early puerperium. The BAP level then showed a clear tendency to recover in the first 3 months after giving birth. Conclusion: When the maternal antioxidant potential remains at a low level after giving birth, careful consideration should be given to the mother’s health and wellbeing because there is a possibility that it might affect the antioxidant potential of breastmilk.
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