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Showing 1 to 12 of 48 entries
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Survey of Pest Management Practices on Washington Dairy Farms.

Journal of extension

Ferguson HJ, Galvin K, Vásquez VB, Yost M, O'Neal S.
PMID: 29520118
J Ext. 2015;53(2).

Washington state dairy producers were surveyed to determine pest and parasite prevalence and range of current pest management strategies. Nearly all respondents reported treating their cattle or premises for flies, while 62% reported treating their animals for external parasites....

Distribution of pyrethrins in oil glands and leaf tissue of Chrysanthemum cinerariaefolium.

Planta medica

Zito SW, Zieg RG, Staba EJ.
PMID: 17404915
Planta Med. 1983 Apr;47(4):205-7. doi: 10.1055/s-2007-969986.

Leaves of Chrysanthemum cinerariaefolium at various stages of development were found to contain differing amounts of pyrethrins. The variation corresponds to the number of oil glands per unit area of leaf surface. Leaf tissue was mechanically and enzymatically separated...

Selection of high pyrethrin producing tissue cultures.

Planta medica

Zieg RG, Zito SW, Staba EJ.
PMID: 17404957
Planta Med. 1983 Jun;48(2):88-91. doi: 10.1055/s-2007-969893.

Axenic callus and shoot cultures of pyrethrum have been shown to be capable of pyrethrin biosynthesis. The influence of explant source on the biosynthetic capacity in cultured tissue was examined. Explants of various plant organs were taken from high...

Electrochemical behavior and determination of the insecticide synergist piperonyl butoxide.

Analytical chemistry

Coomber DC, Tucker DJ, Bond AM.
PMID: 21639228
Anal Chem. 1997 Mar 01;69(5):898-903. doi: 10.1021/ac960846e.

Piperonyl butoxide may be reversibly oxidized in acetonitrile at a glassy carbon electrode to a cation radical under short time scale voltammetric conditions, e.g., cyclic voltammetry when the potential scan rate is above 500 mV s(-)(1). During longer time...

Pesticide analysis in herbal infusions by solid-phase microextraction and gas chromatography with atomic emission detection.

Talanta

Campillo N, Peñalver R, Hernández-Córdoba M.
PMID: 19071467
Talanta. 2007 Feb 28;71(3):1417-23. doi: 10.1016/j.talanta.2006.07.014. Epub 2006 Aug 17.

A direct immersion solid-phase microextraction (SPME) procedure was used in combination with capillary gas chromatography with atomic emission detection (GC-AED) for the determination of 10 pesticides (organochlorines, organophosphorus compounds and pyrethrins) in herbal and tea infusions. Ionic strength, sample...

Determination, mechanism and monitoring of knockdown resistance in permethrin-resistant human head lice, Pediculus humanus capitis.

Journal of Asia-Pacific entomology

Clark JM.
PMID: 20161186
J Asia Pac Entomol. 2009 Mar 01;12(1):1-7. doi: 10.1016/j.aspen.2008.10.007.

Permethrin resistance has been reported worldwide and clinical failures to commercial pediculicides containing permethrin have likewise occurred. Permethrin resistance in head lice populations from the U.S. is widespread but is not yet uniform and the level of resistance is...

The history of extensive structural modifications of pyrethroids.

Journal of pesticide science

Ujihara K.
PMID: 31777441
J Pestic Sci. 2019 Jul 25;44(4):215-224. doi: 10.1584/jpestics.D19-102.

The structural modification of natural pyrethrins has led to a number of synthetic pyrethroid insecticides, and each compound has its own characteristics. At present, pyrethroid insecticides are applied not only for household use, the original use for pyrethrins, but...

Exposure to environmental concentrations of natural pyrethrins induces hepatotoxicity: Assessment in HepG2 cell lines and zebrafish models.

Chemosphere

Lu J, Yang Y, Zhu L, Li M, Xu W, Zhang C, Cheng J, Tao L, Li Z, Zhang Y.
PMID: 34662635
Chemosphere. 2021 Oct 15;132565. doi: 10.1016/j.chemosphere.2021.132565. Epub 2021 Oct 15.

Natural pyrethrins are one variety of botanical pesticide, and are commonly used in organic and ecological agriculture. However, the hepatotoxicity of natural pyrethrins is unknown. In this study, the impact of natural pyrethrins on human HepG2 cells, which are...

A clinical review and history of pubic lice.

Clinical and experimental dermatology

Patel PU, Tan A, Levell NJ.
PMID: 33811771
Clin Exp Dermatol. 2021 Oct;46(7):1181-1188. doi: 10.1111/ced.14666. Epub 2021 May 12.

The ectoparasite Pthirus pubis (PtP), commonly known as the crab or pubic louse, has plagued primates from prehistoric apes to Homo sapiens. We combed the literature from antiquity to the present day, reviewing the pubic louse's origins, its evolution...

Critique of the "Comment" etitled "Pyrethroid exposure: Not so harmless after all" by Demeneix et al. (2020) published in the lancet diabetes endocrinology.

Toxicology letters

Barile FA, Berry SC, Blaauboer B, Boobis A, Bolt H, Borgert CJ, Dekant W, Dietrich D, Domingo JL, Gori GB, Greim H, Hengstler J, Kacew S, Marquardt H, Pelkonen O, Savolainen K, Heslop-Harrison P, Tsatsakis A, Vermeulen NP.
PMID: 33412252
Toxicol Lett. 2021 Apr 01;340:1-3. doi: 10.1016/j.toxlet.2020.12.020. Epub 2021 Jan 04.

No abstract available.

Jasmonic acid is not a biosynthetic intermediate to produce the pyrethrolone moiety in pyrethrin II.

Scientific reports

Matsui R, Takiguchi K, Kuwata N, Oki K, Takahashi K, Matsuda K, Matsuura H.
PMID: 32286354
Sci Rep. 2020 Apr 14;10(1):6366. doi: 10.1038/s41598-020-63026-3.

Pyrethrum (Tanacetum cinerariifolium) produces insecticidal compounds known as pyrethrins. Pyrethrins are esters; the acid moiety is either trans-chrysanthemic acid or pyrethric acid and the alcohol moiety of pyrethrins is either pyrethrolone, cinerolone, or jasmolone. It was generally accepted that...

Augmentation of pyrethrins content in callus of .

3 Biotech

Paramesha M, Manivannan S, Rao SJA, Srikanth KS, Neelwarne B, Shetty NP.
PMID: 30105192
3 Biotech. 2018 Aug;8(8):367. doi: 10.1007/s13205-018-1387-8. Epub 2018 Aug 10.

Pyrethrins are effective food-grade bio-pesticides obtained from the flowers of

Showing 1 to 12 of 48 entries