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https://www.readbyqxmd.com/read/29533838/morphology-of-glandular-trichomes-of-japanese-catnip-schizonepeta-tenuifolia-briquet-and-developmental-dynamics-of-their-secretory-activity
#1
Chanchan Liu, Narayanan Srividya, Amber N Parrish, Wei Yue, Mingqiu Shan, Qinan Wu, B Markus Lange
Schizonepeta tenuifolia Briquet, commonly known as Japanese catnip, is used for the treatment of colds, headaches, fevers, and skin rashes in traditional Asian medicine (China, Japan and Korea). The volatile oil and its constituents have various demonstrated biological activities, but there is currently limited information regarding the site of biosynthesis. Light microscopy and scanning electron microscopy indicated the presence of three distinct glandular trichome types which, based on their morphological features, are referred to as peltate, capitate and digitiform glandular trichomes...
June 2018: Phytochemistry
https://www.readbyqxmd.com/read/29165868/the-effects-of-intrinsic-enrichment-on-captive-felids
#2
Juliana Damasceno, Gelson Genaro, Thomas Quirke, Shannen McCarthy, Sean McKeown, Ruth O'Riordan
Environmental enrichment is a well-known technique, which has been used to enhance the welfare of captive animals. The aim of this study is to investigate how three different forms of intrinsic enrichment, namely, a hay ball without scent, a hay ball with catnip, and a hay ball with cinnamon, influenced the behavior of six cheetah and two Sumatran tigers at Fota Wildlife Park, Ireland. Enrichment-directed behaviors, as well as pacing, locomotion, inactive, and exploratory behaviors were investigated. The results indicated that the three forms of enrichment had similar effects, in terms of enrichment-directed behavior, with cinnamon resulting in the highest levels of enrichment-directed behaviors...
May 2017: Zoo Biology
https://www.readbyqxmd.com/read/28698045/active-and-passive-responses-to-catnip-nepeta-cataria-are-affected-by-age-sex-and-early-gonadectomy-in-male-and-female-cats
#3
Luz Teresa Espín-Iturbe, Bernardo A López Yañez, Apolo Carrasco García, Rodolfo Canseco-Sedano, Maribel Vázquez-Hernández, Genaro A Coria-Avila
Catnip (Nepeta cataria) is a popular plant among cat owners because in about 60% of felids elicits active behaviors such as rolling over, grooming, motor activity and vocalizations. Herein, we assessed the display of active but also passive responses, such as time in sphinx-like position, and consequently hypothesized that 100% of cats respond to catnip. Accordingly, sixty domestic cats of different age (infant, juvenile, adults), sex (males, females) and gonadal status (early gonadectomized, gonadally intact) were placed in a cylindrical chamber (1...
September 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28407077/chemosensory-responses-to-the-repellent-nepeta-essential-oil-and-its-major-component-nepetalactone-by-aedes-aegypti-diptera-culicidae-a-vector-of-zika-virus
#4
Jackson T Sparks, Jonathan D Bohbot, Mihailo Ristic, Danijela Mišic, Marijana Skoric, Autar Mattoo, Joseph C Dickens
Nepeta essential oil (Neo; catnip) and its major component, nepetalactone, have long been known to repel insects including mosquitoes. However, the neural mechanisms through which these repellents are detected by mosquitoes, including the yellow fever mosquito Aedes aegypti (L.), an important vector of Zika virus, were poorly understood. Here we show that Neo volatiles activate olfactory receptor neurons within the basiconic sensilla on the maxillary palps of female Ae. aegypti. A gustatory receptor neuron sensitive to the feeding deterrent quinine and housed within sensilla on the labella of females was activated by both Neo and nepetalactone...
July 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28302120/responsiveness-of-cats-felidae-to-silver-vine-actinidia-polygama-tatarian-honeysuckle-lonicera-tatarica-valerian-valeriana-officinalis-and-catnip-nepeta-cataria
#5
COMPARATIVE STUDY
Sebastiaan Bol, Jana Caspers, Lauren Buckingham, Gail Denise Anderson-Shelton, Carrie Ridgway, C A Tony Buffington, Stefan Schulz, Evelien M Bunnik
BACKGROUND: Olfactory stimulation is an often overlooked method of environmental enrichment for cats in captivity. The best known example of olfactory enrichment is the use of catnip, a plant that can cause an apparently euphoric reaction in domestic cats and most of the Pantherinae. It has long been known that some domestic cats and most tigers do not respond to catnip. Although many anecdotes exist of other plants with similar effects, data are lacking about the number of cats that respond to these plants, and if cats that do not respond to catnip respond to any of them...
March 16, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/27779781/epa-registered-repellents-for-mosquitoes-transmitting-emerging-viral-disease
#6
REVIEW
Radha V Patel, Kristy M Shaeer, Pooja Patel, Aleksey Garmaza, Kornwalee Wiangkham, Rachel B Franks, Olivia Pane, Nicholas W Carris
In many parts of the United States, mosquitoes were previously nuisance pests. However, they now represent a potential threat in the spread of viral diseases. The Aedes aegypti, Aedes albopictus, and Culex species mosquitoes are endemic to the United States and together may transmit a variety of viral diseases of growing concern, including West Nile virus, chikungunya, dengue fever, and Zika virus. The Centers for Disease Control and Prevention and the Environmental Protection Agency (EPA) recommend N,N-diethyl-meta-toluamide (DEET) as a first-line mosquito repellent, but for patients refusing to use DEET or other conventional repellents, guidance is limited to any EPA-registered product...
December 2016: Pharmacotherapy
https://www.readbyqxmd.com/read/27313645/effect-of-catnip-charcoal-on-the-in-vivo-pharmacokinetics-of-the-main-alkaloids-of-rhizoma-coptidis
#7
Yanfei He, Siyu Chen, Hai Yu, Long Zhu, Yayun Liu, Chunyang Han, Cuiyan Liu
This study aims to explore the effect of catnip Nepeta cataria (CNC) charcoal on the pharmacokinetics of the main alkaloids of Rhizoma Coptidis in vivo. Twenty-four rabbits were randomly divided into four groups and given oral administration of an aqueous extract of Rhizoma Coptidis (RCAE), RCAE plus CNC, RCAE plus activated carbon (AC), or distilled water, respectively. Plasma samples were collected after administration. The concentrations of berberine, coptisine, palmatine, and epiberberine in plasma were measured by high-performance liquid chromatography (HPLC)...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/26611967/the-effects-of-plant-essential-oils-on-escape-response-and-mortality-rate-of-aedes-aegypti-and-anopheles-minimus
#8
Sunaiyana Sathantriphop, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap
The High Throughput Screening System (HITSS) has been applied in insecticide behavioral response studies with various mosquito species. In general, chemical or natural compounds can produce a range of insect responses: contact irritancy, spatial repellency, knock-down, and toxicity. This study characterized these actions in essential oils derived from citronella, hairy basil, catnip, and vetiver in comparison to DEET and picaridin against Aedes aegypti and Anopheles minimus mosquito populations. Results indicated the two mosquito species exhibited significantly different (P<0...
December 2015: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/26115365/evaluation-of-a-push-pull-approach-for-aedes-aegypti-l-using-a-novel-dispensing-system-for-spatial-repellents-in-the-laboratory-and-in-a-semi-field-environment
#9
Ulla Obermayr, Joachim Ruther, Ulrich R Bernier, Andreas Rose, Martin Geier
The increase in insecticide resistant mosquito populations necessitates the exploration of novel vector control intervention measures. Push-pull strategies for insect control have been successful when used in integrated crop pest management. Through the combinatory use of deterring and attracting stimuli, the abundance of insect pests can be changed in a given area. A push-pull strategy might also significantly reduce human-vector contacts and augment existing mosquito control strategies, e.g. through the combination of an attractive trapping system and a potent spatial repellent...
2015: PloS One
https://www.readbyqxmd.com/read/25632454/biobased-lactams-as-novel-arthropod-repellents
#10
Kamlesh R Chauhan, Hemant Khanna, Nagendra Babu Bathini, Thanh C Le, John Grieco
Enanatiomerically pure 4aS,7S,7aR and 4aS,7S,7aS-nepetalactams and their analogs have been prepared in just two steps from 4aS,7S,7aR and 4aS,7S,7aS-nepetalactones, major components of catnip oil. Lactams or cyclic amides from iridoid monoterpenes are generated and being evaluated as a new class of compounds as arthropod deterrents against disease vectors.
December 2014: Natural Product Communications
https://www.readbyqxmd.com/read/25491886/comparisons-of-antifeedancy-and-spatial-repellency-of-three-natural-product-repellents-against-horn-flies-haematobia-irritans-diptera-muscidae
#11
Junwei J Zhu, Gary J Brewer, David J Boxler, Kristina Friesen, David B Taylor
BACKGROUND: Horn flies are among the most important biting fly pests of cattle in the United States. Horn fly management is largely dependent upon pesticides, which ultimately leads to the rapid development of insecticide resistance. Alternative control strategies, including repellents, have shown promising results in reducing fly biting. In the present study, we examined the efficacy and longevity of recently identified natural product repellents against horn flies. RESULTS: Catnip oil, geraniol and C8910 acids reduced horn fly feeding in a laboratory bioassay and also exhibited spatial repellency in the olfactometer...
November 2015: Pest Management Science
https://www.readbyqxmd.com/read/25424262/behavioral-responses-of-aedes-aegypti-aedes-albopictus-culex-quinquefasciatus-and-anopheles-minimus-against-various-synthetic-and-natural-repellent-compounds
#12
Sunaiyana Sathantriphop, Sabrina A White, Nicole L Achee, Unchalee Sanguanpong, Theeraphap Chareonviriyaphap
The behavioral responses of colony populations of Aedes aegypti, Aedes albopictus, Culex quinquefasciatus, and Anopheles minimus to four essential oils (citronella, hairy basil, catnip, and vetiver), two standard repellents (DEET and picaridin), and two synthetic pyrethroids (deltamethrin and permethrin) were conducted in the laboratory using an excito-repellency test system. Results revealed that Cx. quinquefasciatus and An. minimus exhibited much stronger behavioral responses to all test compounds (65-98% escape for contact, 21...
December 2014: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/24951263/operation-catnip-working-together-to-reduce-free-roaming-cat-populations-ethically-and-effectively
#13
EDITORIAL
Annette Litster
No abstract text is available yet for this article.
September 2014: Veterinary Journal
https://www.readbyqxmd.com/read/24674451/a-push-pull-system-to-reduce-house-entry-of-malaria-mosquitoes
#14
David J Menger, Bruno Otieno, Marjolein de Rijk, W Richard Mukabana, Joop J A van Loon, Willem Takken
BACKGROUND: Mosquitoes are the dominant vectors of pathogens that cause infectious diseases such as malaria, dengue, yellow fever and filariasis. Current vector control strategies often rely on the use of pyrethroids against which mosquitoes are increasingly developing resistance. Here, a push-pull system is presented, that operates by the simultaneous use of repellent and attractive volatile odorants. METHOD/RESULTS: Experiments were carried out in a semi-field set-up: a traditional house which was constructed inside a screenhouse...
2014: Malaria Journal
https://www.readbyqxmd.com/read/24264909/a-generalist-herbivore-in-a-specialist-mode-metabolic-sequestrative-and-defensive-consequences
#15
M S Blum, R F Severson, R F Arrendale, D W Whitman, P Escoubas, O Adeyeye, C G Jones
Adults of a generalist herbivore, the lubber grasshopper,Romalea guttata, can be converted to functional specialists by feeding them exclusively on catnip,Nepeta cataria. No obvious adverse effects on adult development resulted from this enforced monophagy. Notwithstanding the fact thatR. guttata has had no coevolutionary relationship with this Eurasian mint, it readily sequesters compounds that are identical to or derived from the terpenoid lactones that are characteristic ofN. cataria. R. guttata appears to both biomagnify minor allelochemicals and to sequester metabolites of theNepeta terpenes in its paired defensive glands...
January 1990: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/24249371/caffeoyltartronic-acid-from-catnip-nepeta-cataria-a-precursor-for-catechol-in-lubber-grasshopper-romalea-guttata-defensive-secretions
#16
M E Snook, M S Blum, D W Whitman, R F Arrendale, C E Costello, J S Harwood
Adults of the lubber grasshopper (Romalea guttata) secrete increased amounts of catechol from their defensive glands when fed diets containing only catnip leaves (Nepeta cataria). Model compound bioassays showed that these insects were able to sequester and biomagnify simple phenols, such as catechol and hydroquinone, in their defense gland secretions. Excessive catechol secretions from caffeic acid-fortified diets indicated metabolic pathways exist to perform efficiently more complex biochemical conversions...
September 1993: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/24111783/efficacy-and-longevity-of-newly-developed-catnip-oil-microcapsules-against-stable-fly-oviposition-and-larval-growth
#17
J J Zhu, B J Wienhold, J Wehrle, D Davis, H Chen, D Taylor, K Friesen, L Zurek
The stable fly, Stomoxys calcitrans (Diptera: Muscidae), is one of the most important pests of cattle and costs U.S. cattle producers billions of dollars in losses annually. In this study, the efficacy of catnip oil encapsulated in gelatin in oviposition deterrence and larval growth inhibition in stable flies was examined under laboratory conditions. More than 98% inhibition of stable fly larval growth and female oviposition was observed in larval and oviposition media treated with encapsulated catnip oil (0...
June 2014: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/23393752/a-field-bioassay-to-evaluate-potential-spatial-repellents-against-natural-mosquito-populations
#18
K R Chauhan, J R Aldrich, P W McCardle, G B White, R E Webb
A field bioassay evaluating candidate chemicals as aerial repellents was developed and evaluated against natural mosquito populations in Beltsville, MD. The bioassay consisted of an attractive source surrounded by a grid of 16 septa containing a volatile candidate aerial repellent, compared with an attractive source without such a grid. The attractive source was a Centers for Disease Control and Prevention light trap supplemented with carbon dioxide. Significant sources of variation included weather, position, and the differential response of mosquito species...
December 2012: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/23270167/laboratory-evaluation-techniques-to-investigate-the-spatial-potential-of-repellents-for-push-and-pull-mosquito-control-systems
#19
COMPARATIVE STUDY
U Obermayr, J Ruther, U Bernier, A Rose, M Geier
A protocol has been developed for the indoor evaluation of candidate spatial repellents intended for use in push and pull systems. Single treatments (catnip oil, 1-methylpiperazine, and homopiperazine) and a mixture of catnip oil and homopiperazine were tested with yellow-fever mosquitoes (Aedes aegypti) in Y-tube olfactometers to determine 1) if these compounds inhibited mosquito host-seeking at short distances and 2) if results obtained in olfactometer tests can be correlated with a larger scale set-up, that is, a room test...
November 2012: Journal of Medical Entomology
https://www.readbyqxmd.com/read/22556702/pharmacognosy-of-nepeta-cataria
#20
M Sarkar, R Rashmi, Vikramaditya, P N Varma
Nepeta cataria Linn (Family Labiatae), commonly known as catnip, is a herbaceous plant and is a native of southeast Europe, Orient, Southwest Asia and Western temperate Himalayas. Leaves and flowering tops, which contain tannin and volatile oil are aromatic, carminative, tonic, diaphoretic, refrigerant, emmenagogue, antiseptic, stimulant and useful in infantile colic and hysteria. Leaves are deltoid-oval with double layers of palisade, petiole about as long as blade, arc shaped in t.s., having vascular bundle flanked by 2 smaller bundles in two projection; stem hollow in the middle; leaves, petioles and stems contain glandular and uniseriate, multicellular non glandular hairs; TLC of alcoholic extract in Benzene: Chloroform (1:1) shows 8 spots and UV absorbance shows strong peak at 212 nm; extractive values and ash values were also determined...
April 1995: Ancient Science of Life
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