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Multivariate optimization of a dispersive liquid-liquid microextraction method for the determination of six antiparasite drugs in kennel effluent waters by using second-order chromatographic data.

Six veterinary active ingredients (imidacloprid, albendazole, fenbendazole, praziquantel, fipronil and permethrin) were extracted and quantified by liquid chromatography with diode array detection in water samples from a wetland system used for the treatment of waste from a dog breeding plant. Response surface methodology, based on least-squares and artificial neural networks modelling, was applied for the optimization of a dispersive liquid-liquid microextraction (DLLME) procedure. Firstly, two experimental designs were built for screening and optimization, respectively. Then, the desirabilit…

Comparative efficacy of several insecticides for control of cattle lice (Mallophaga: Trichodectidae and Anoplura: Haematopinidae).

Several insecticides were applied to cattle at various rates, mixtures, application methods and numbers of treatments and evaluated for control of cattle lice. The insecticides included permethrin at various rates as a pour-on with and without the synergist piperonyl butoxide (PBO), and also at various rates as a spray with and without PBO. Pirimiphos-methyl was evaluated as a pour-on at various rates and with one or two applications. Lambda cyhalothrin in microencapsulated formulation was compared to a non-microencapsulated formulation. Rabon(R) was applied as a pour-on at two rates and at on…

Decreased sperm motility in rats orally exposed to single or mixed pesticides.

The Brazilian Agency of Sanitary Vigilance (ANVISA) conducted a study that demonstrated the presence of residues of several pesticides in fresh fruits and vegetables that were available for purchase by the general populace. In order to evaluate potential adverse health effects of low-level exposure to agrochemicals, the reproductive toxicity of the pesticides dicofol, dichlorvos, permethrin, endosulfan, and dieldrin was evaluated in rats dosed with these chemicals individually or as mixtures. Sixty male Lewis rats (6 wk old, 200 x g) were randomly allocated to 8 groups: (1) control group, rece…

Clinical efficacy of selamectin in the treatment of naturally acquired infection of sucking lice (Linognathus setosus) in dogs.

A clinical study was performed in 21 dogs to evaluate the efficacy of selamectin for the treatment of naturally acquired infection of sucking lice (Linognathus setosus [L.setosus]) in dogs. Each dog was randomly assigned to one of two treatment groups. One group was treated with selamectin applied topically at a mean dosage of 7.9 mg/kg. The other group was treated with permethrin applied topically at a mean dosage of 85.7 mg/kg. At day 42 posttreatment, all animals remaining in the study (10 treated with selamectin and six with permethrin) were clear of lice. In both groups, the reduction in …

Evaluation of an imidacloprid (8.8% w/w)--permethrin (44.0% w/w) topical spot-on and a fipronil (9.8% w/w)--(S)-methoprene (8.8% w/w) topical spot-on to repel, prevent attachment, and kill adult Ixodes scapularis and Amblyomma americanum ticks on dogs.

This study evaluated the effectiveness of two topical spot-on formulations -- imidacloprid(8.8% w/w)-permethrin (44.0% w/w) and fipronil (9.8% w/w)-(S)-methoprene (8.8% w/w)--to repel, prevent the attachment of, and kill adult Ixodes scapularis and Amblyomma americanum on dogs. Twelve purpose-bred beagles were distributed into three groups of four dogs each; one group served as untreated controls, and each of the other two groups received one of the test products. Dogs were exposed to 25 adult ticks of each species for 10 minutes on posttreatment days 3, 7, 14, 21, and 28. Unattached or repell…

Evaluation of an imidacloprid (8.8% w/w)--permethrin (44.0% w/w) topical spot-on and a fipronil (9.8% w/w)--(S)-methoprene (8.8% w/w) topical spot-on to repel, prevent attachment, and kill adult Rhipicephalus sanguineus and Dermacentor variabilis ticks on dogs.

This study evaluated the effectiveness of two topical spot-on formulations, imidacloprid (8.8% w/w)--permethrin (44.0% w/w) and fipronil (9.8% w/w)--(S)-methoprene (8.8% w/w), to repel, prevent the attachment of, and kill adult Rhipicephalus sanguineus and Dermacentor variabilis on dogs. Twelve purpose-bred beagles were distributed into three groups of four dogs each; one group served as untreated controls and each of the other two groups received one of the test products. Dogs were exposed to 25 adult ticks of each species for 10 minutes on posttreatment days 3, 7, 14, 21, and 28. Nonattached…

Pyrethroid resistance intensity and mechanisms in Anopheles gambiae sensu lato (Diptera: Culicidae) from Oyo State, Nigeria.

BACKGROUND: Pyrethroid resistance in Anopheles gambiae sensu lato (s.l.) is increasing across Nigeria and threatens the effectiveness of lon … male mosquitoes were evaluated in accordance with WHO testing procedures. Susceptibility to alpha-cypermethrin (12.5 μg/bottle), deltamethrin (12.5 μg/bottle), and permethrin (21.5 μg/bottle) was determined using the CDC bottle bioassay at diagnostic concentrations (1×), with standard replicate batches per assay. Populations exhibiting resistance at 1× were …

Comparative efficacy of three pediculicides to treat head lice infestation in primary school girls: a randomised controlled assessor blind trial in rural Iran.

BACKGROUND: Head lice infestation (Pediculosis) is one of the most important health challenges particularly in primary school-aged children. … ach with about 25 participants (#77) were eventually twice with a week apart treated with either 1% permethrin, 0.2% parasidose (d-phenothrin) or 4% dimeticone lotion preparations. In each case, a questionnaire form was completed on epidemiologic factors. Data were registered after a fortnight from primary scalp treatment and re-inspection on days 2, 6, 9 an …

Механистические данные о широко распространенной резистентности к инсектицидам среди переносчиков вирусов < < Иллинойс Уэст нийл > > , < < Кулекс пипиен > > и < < Кьюлекс ресуан > > .

Москиты являются основными переносчиками болезней и представляют собой серьезную проблему в области здравоохранения во всем мире. Борьба с вспышками заболеваний в основном зависит от инсектицидов, однако эволюция резистентности к инсектицидам ставит под угрозу эффективность таких мер реагирования. Поэтому мониторинг подверженности инсектицидам имеет жизненно важное значение для принятия обоснованных решений в отношении реагирования на вспышки. В этом исследовании рассматриваются модели устойчивости к перметрину и малатиону у вирусных векторов Западного Нила, Cx. pipiens и Cx. resuans, по всему

Совпадение в аннотации оригинала
Mosquitoes are major vectors of diseases and a significant public health concern worldwide. Outbreak mitigation relies largely on insecticid … tal for informed decisions regarding outbreak responses. This study examines resistance patterns to permethrin and malathion in West Nile virus vectors, Cx. pipiens and Cx. restuans, across Illinois from 2018 to 2020. CDC bottle bioassays were used to determine phenotypic resistance to each insecticide. Individuals from each sampling location were sequenced …

Urban adaptation and pyrethroid resistance driven by molecular resistance mechanisms in Anopheles coluzzii populations from a peri‑urban setting in southwestern Nigeria.

BACKGROUND: Urbanisation and increasing insecticide resistance threaten malaria vector control in Nigeria. This study assessed mosquito species composition, insecticide susceptibility and molecular resistance mechanisms in Anopheles gambiae s.l. populations in Ado-Odo Ota, Ogun State, Nigeria. METHODS: Mosquitoes were collected from January to June 2024 using CDC light traps and larval sampling. Specimens were identified morphologically and confirmed by PCR. Insecticide susceptibility of 150 adult female mosquitoes was evaluated using WHO protocols for permethrin (0.75%) and deltamethrin (0.0…

Role of vegetation in a constructed wetland on nutrient-pesticide mixture toxicity to Hyalella azteca.

The toxicity of a nutrient-pesticide mixture in nonvegetated and vegetated sections of a constructed wetland (882 m² each) was assessed using Hyalella azteca 48-h aqueous whole-effluent toxicity bioassays. Both sections were amended with a mixture of sodium nitrate, triple superphosphate, diazinon, and permethrin simulating storm-event agricultural runoff. Aqueous samples were collected at inflow, middle, and outflow points within each section 5 h, 24 h, 72 h, 7 days, 14 days, and 21 days postamendment. Nutrients and pesticides were detected throughout both wetland sections with concentrations…

Management of scabies.

Scabies is a common infestation worldwide, affecting persons of any age and socioeconomic status. In Singapore, it is more common in institu … n microscopy. The usual treatment for adult scabies in Singapore is the use of topical malathion or permethrin. A combination of topical permethrin and oral ivermectin is used for crusted scabies.

Scabies and pediculosis pubis: an update of treatment regimens and general review.

The ectoparasites scabies and pediculosis pubis are common causes of skin rash and pruritus worldwide. They are transmitted primarily by person-to-person spread and are generally associated with low morbidity. The preferred treatment for scabies has generally been topical agents such as lindane and permethrin. Recently, ivermectin has demonstrated good efficacy in the treatment of scabies, and it may be of particular use in institutional outbreaks and in communities in which scabies is endemic. Combination treatment with topical agents and oral ivermectin may be necessary for crusted scabies. …

[Peculicidal activity of plant essential oils and their based preparations].

The peculicidal activity of eight plant essential oils in 75% isopropyl alcohol was in vitro investigated. Of them, the substances that were … 5-5-fold increases. Citronella and anise oils had incomplete ovicidal activity. Since the lice were permethrin-resistant, the efficacy of preparations based on essential oils was much higher than permethrin.

Dermatitis in a horse associated with the poultry mite (Dermanyssus gallinae).

This is the first documented case report of dermatitis associated with the poultry mite (Dermanyssus gallinae) in a horse. It occurred in a 16-year-old horse that was in contact with domestic hens. Clinical signs consisted of severe pruritus, with self-induced hair loss mainly on the head. Despite the multiple skin scrapings performed during both day- and nighttime, mites were only isolated from the in-contact poultry and from the horse's environment, and not the horse. The animal was treated using a 2% permethrin solution, sprayed on the entire body once a week for 4 weeks, and by decontamina…

Crusted (Norwegian) scabies.

Crusted (Norwegian) scabies, a rare variant of ordinary scabies, is a highly contagious infection in which the skin is infested with thousan … cation frequently requires repeated applications, and care must be taken to avoid lindane toxicity. Permethrin cream is as efficacious as lindane in the treatment of ordinary scabies. Because of its wider margin of safety, permethrin may become the preferred treatment for crusted scabies.

Characterization of resistance profile (intensity and mechanisms) of Anopheles gambiae in three communes of northern Benin, West Africa.

BACKGROUND: The selection and the spread of insecticide resistance in malaria vectors to the main classes of insecticides used in vector con … ive-day-old, non-blood-fed, female mosquitoes were exposed to papers impregnated with deltamethrin, permethrin and bendiocarb at dosages of 1 × the diagnostic dose, 5 × and 10 × to determine the intensity of resistance in these vectors. Molecular frequencies of the kdr L1014F and ace-1R G119S insecticide resistance mutations and levels of detoxification enzy …

Distribution of Anopheles gambiae s.l siblings, insecticide resistance and prevalence of markers of resistance (Kdr & Ace-1) in Edea and Buea: forest region of Cameroon.

BACKGROUND: The complexity and heterogeneity of malaria transmission in Cameroon is enhanced by the different eco-systems and topology which … hosmethyl in Edea. In both communities, mortality increased with increasing concentration of alphacypermethrin, permethrin, pirimiphosmethyl and bendiocarb while PBO had a synergistic effect on all pyrethroid insecticides tested. There was a significant difference in the mortality to 1X permethrin (p = 0.014),1X permethrin + PBO (p = 0.001), 5X permethrin (p …

Delayed-Onset and Prolonged Laryngeal Edema Following Pyrethroid Insecticide Poisoning: A Case Report.

Pyrethroid insecticides are generally considered to have low mammalian toxicity; however, severe toxicity may occur following high-dose or intentional ingestion. Pyrethroids are classified into two types, Type Ⅰ and Type Ⅱ, with permethrin belonging to Type Ⅰ, which is typically associated with tremor. Laryngeal edema associated with pyrethroid poisoning has been rarely reported and is usually acute and self-limited. We report a case of delayed-onset and prolonged laryngeal edema following permethrin ingestion that required extended airway management and tracheostomy. A 73-year-old woman attem…

Susceptibility to DDT and some other insecticides of head lice (Pediculus capitis De Geer) in Czechoslovakia.

For testing the susceptibility of the head louse to insecticides impregnated bunches of polyamide fibres, whose diameter resembled that of human hair (0.1 mm) were used. In this manner a low mortality of control lice collected from infected persons was obtained (2.9% after 16 hours of exposure). Even after 25 years of DDT use no apparent resistance could be demonstrated in 25 tested louse populations and cross resistance to permethrin in 7 tested populations. The diagnostic concentration for resistance to pp'-DDT was established at 1%. Of the tested insecticides the highest toxicity was shown …