نتایج جستجو برای: german cockroach
تعداد نتایج: 53344 فیلتر نتایج به سال:
The repellency and toxicity of mint oil to American, Periplaneta americana (L.), and German, Blattella germanica (L.), cockroaches were evaluated in a series of laboratory experiments. In topical application experiments, mint oil was toxic to both species with toxicities (LD50s) of 2.57 (1.98– 4.20) in 10 l and 3.83 (2.35–7.34)% in 2 l for American and German cockroaches, respectively. In conti...
BACKGROUND Cockroach allergy is a key contributor to asthma morbidity in children living in urban environments. OBJECTIVE We sought to document immune responses to cockroach allergen and provide direction for the development of immunotherapy for cockroach allergy. METHODS Four pilot studies were conducted: (1) an open-label study to assess the safety of cockroach sublingual immunotherapy (S...
BACKGROUND The relationships between cockroach and mouse allergen exposure, anti-cockroach and anti-mouse IgE, and wheeze, rhinitis, and atopic dermatitis in children as young as age 3 years are of public health importance but have not been thoroughly evaluated. OBJECTIVE We hypothesized that inner-city children might have anti-cockroach and anti-mouse IgE by age 3 years, and their presence w...
The resistance profiles of 22 field-collected populations of the German cockroach, Blattella germanica (L.) (Dictyoptera: Blattellidae), from various localities in Singapore were determined by topical bioassay against novel and conventional insecticides from six classes: (1) pyrethroid (beta-cyfluthrin, deltamethrin), (2) carbamate (propoxur), (3) organophosphate (chlorpyrifos), (4) phenyl pyra...
background : cockroaches are of vital importance medically and hygienically. they are able to contaminate foods and act as vectors of pathogenic agents such as bacteria, protozoa, and parasites to human environment either mechanically or through their digestive system. cockroaches belong to the phylum arthropoda, class insecta, and order blattodea or blattaria. to date, over 4,500 cockroach spe...
background: asthma is the most common chronic disease of childhood. exposure to allergens plays an important role in asthma. recently, cockroach has attracted attentions as an important allergen. objective: to evaluate cockroach allergy in iranian children with asthma. methods: 100 children with asthma were studied. after determination of asthma severity, serum total ige and blood eosinophi...
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