keyword
MENU ▼
Read by QxMD icon Read
search

cockroach

keyword
https://www.readbyqxmd.com/read/28228922/parasitic-gregarine-blattarum-found-infecting-american-cockroaches-periplaneta-americana-in-a-population-in-pulau-pinang-malaysia
#1
Zary Shariman Yahaya, Nik Ahmad Irwan Izzaudin, Ainul Farhana Abdul Razak
A study on the prevalence of a common endoparasite in the wild population of the American cockroach was conducted in Penang Island using a trapping method at several sampling sites on the island. Gregarine blattarum was found in the digestive tract in 5 out of 115, or 4.35%, of the wild American cockroaches, Periplaneta americana, that were sampled. This is the first report in Malaysia of Gregarine blattarum in local American cockroaches.
January 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28225562/the-adipokinetic-hormone-of-mantodea-in-comparison-to-other-dictyoptera
#2
Gerd Gäde, Heather G Marco
Six species of the order Mantodea (praying mantises) are investigated for the presence and sequence of putative adipokinetic hormones (AKHs). The selected species span a wide evolutionary range of various families and subfamilies of the clade Mantodea. The corpora cardiaca of the different species are dissected, methanolic extracts prepared, peptides separated by liquid chromatography, and AKHs detected and sequenced by ion trap mass spectrometry. All six species investigated contain an octapeptide with the primary structure pGlu-Val-Asn-Phe-Thr-Pro-Asn-Trp amide, which is code-named Emppe-AKH and had been found earlier in three other species of Mantodea...
February 22, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28198394/cockroach-protease-allergen-induces-allergic-airway-inflammation-via-epithelial-cell-activation
#3
Sagar L Kale, Komal Agrawal, Shailendra Nath Gaur, Naveen Arora
Protease allergens are known to enhance allergic inflammation but their exact role in initiation of allergic reactions at mucosal surfaces still remains elusive. This study was aimed at deciphering the role of serine protease activity of Per a 10, a major cockroach allergen in initiation of allergic inflammation at mucosal surfaces. We demonstrate that Per a 10 increases epithelial permeability by disruption of tight junction proteins, ZO-1 and occludin, and enhances the migration of Monocyte derived dendritic cell precursors towards epithelial layer as exhibited by trans-well studies...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28188710/-prevalence-of-sensitization-to-inhalant-allergens-in-the-immunology-department-from-hospital-de-especialidades-pedi%C3%A3-tricas-mar%C3%A3-a-honduras-2016
#4
Victoria Alejandra Gonzales-González, Adolfo Martín Díaz-Flores, Karla Zobeyda Fernández-Zelaya, María Félix Rivera-Reyes
BACKGROUND: Allergic diseases are a public health problem; estimates indicate that between 30% and 40% of the world population is affected by some allergy. Knowing the prevalence of allergen sensitization allows for adequate diagnoses and treatments to be offered. In Honduras there are no studies available in pediatric patients. OBJECTIVE: The purpose of this research was to identify the most common types of sensitization in children and their correlation with the most common allergic diseases in patients on immunotherapy at the Maria Hospital of Pediatric Specialties...
January 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/28187624/new-species-of-i-hammerschmidtiella-i-chitwood-1932-and-i-blattophila-i-cobb-1920-and-new-geographical-records-for-i-severianoia-i-i-annamensis-i-van-luc-amp-spiridonov-1993-nematoda-oxyurida-thelastomatoidea-from-cockroaches-insecta-blattaria-in-ohio-and-florida
#5
Ramon A Carreno
Two new species of thelastomatid nematodes parasitic in the hindgut of cockroaches are described. Hammerschmidtiella keeneyi n. sp. is described from a laboratory colony of Diploptera punctata (Eschscholtz, 1822) from a facility in Ohio, U. S. A. This species is characterized by having females with a short tail and males smaller than those described from other species. The new species also differs from others in the genus by a number of differing measurements that indicate a distinct identity, including esophageal, tail, and egg lengths as well as the relative position of the excretory pore...
January 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28183995/structure-of-a-eukaryotic-voltage-gated-sodium-channel-at-near-atomic-resolution
#6
Huaizong Shen, Qiang Zhou, Xiaojing Pan, Zhangqiang Li, Jianping Wu, Nieng Yan
Voltage-gated sodium (Nav) channels are responsible for the initiation and propagation of action potentials. They are associated with a variety of channelopathies and are targeted by multiple pharmaceutical drugs and natural toxins. Here, we report the cryo-EM structure of a putative Nav channel from American cockroach (designated NavPaS) at 3.8-Å resolution. The voltage sensing domains (VSDs) of the four repeats exhibit distinct conformations. The entrance to the asymmetric selectivity filter vestibule is guarded by heavily glycosylated and disulfide bond-stabilized extracellular loops...
February 9, 2017: Science
https://www.readbyqxmd.com/read/28183051/expression-crosslinking-and-developing-modulus-master-curves-of-recombinant-resilin
#7
Md Shahriar K Khandaker, Daniel M Dudek, Eric P Beers, David A Dillard
Resilin is a disordered elastomeric protein found in specialized regions of insect cuticles, where low stiffness and high resilience are required. Having a wide range of functions that vary among insect species, resilin operates across a wide frequency range, from 5Hz for locomotion to 13kHz for sound production. We synthesize and crosslink a recombinant resilin from clone-1 (exon-1+exon-2) of the gene, and determine the water content (approximately 80wt%) and dynamic mechanical properties, along with estimating surface energies relevant for adhesion...
January 11, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28179480/transient-voltage-activated-k-currents-in-central-antennal-lobe-neurons-cell-type-specific-functional-properties
#8
Lars Paeger, Viktor Bardos, Peter Kloppenburg
Here we analyzed transient voltage-activated K(+) currents (IA) of projection neurons and local interneurons in the antennal lobe (AL) of the cockroach Periplaneta americana. The AL is the first synaptic processing station for olfactory information in insects. Local interneurons are crucial for computing olfactory information and form local synaptic connections exclusively in the AL, while a primary task of the projection neurons is the transfer of preprocessed olfactory information from the AL to the protocerebrum...
February 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28174527/spatial-navigation-and-the-central-complex-sensory-acquisition-orientation-and-motor-control
#9
REVIEW
Adrienn G Varga, Nicholas D Kathman, Joshua P Martin, Peiyuan Guo, Roy E Ritzmann
Cockroaches are scavengers that forage through dark, maze-like environments. Like other foraging animals, for instance rats, they must continually asses their situation to keep track of targets and negotiate barriers. While navigating a complex environment, all animals need to integrate sensory information in order to produce appropriate motor commands. The integrated sensory cues can be used to provide the animal with an environmental and contextual reference frame for the behavior. To successfully reach a goal location, navigational cues continuously derived from sensory inputs have to be utilized in the spatial guidance of motor commands...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28173820/therapeutic-arthropods-and-other-largely-terrestrial-folk-medicinally-important-invertebrates-a-comparative-survey-and-review
#10
REVIEW
V Benno Meyer-Rochow
Traditional healing methods involving hundreds of insect and other invertebrate species are reviewed. Some of the uses are based on the tenet of "similia similibus" (let likes be cured by likes), but not all non-conventional health promoting practices should be dismissed as superstition or wishful thinking, for they have stood the test of time. Two questions are addressed: how can totally different organ systems in a human possibly benefit from extracts, potions, powders, secretions, ashes, etc. of a single species and how can different target organs, e...
February 7, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28173695/the-american-cockroach-peptide-periplanetasin-2-blocks-clostridium-difficile-toxin-a-induced-cell-damage-and-inflammation-in-the-gut
#11
Ji Hong, Peng Zhang, I Na Yoon, Jae Sam Hwang, Jin Ku Kang, Ho Kim
Clostridium difficile, which causes pseudomembranous colitis, releases toxin A and toxin B. These toxins are considered to be the main causative agents for the disease pathogenesis, and their expression is associated with a marked increase of apoptosis in mucosal epithelial cells. Colonic epithelial cells are believed to form a physical barrier between the lumen and the submucosa, and abnormally increased mucosal epithelial cell apoptosis is considered to be an initial step in gut inflammation responses. Therefore, one approach to treating pseudomembranous colitis would be to develop agents that block the mucosal epithelial cell apoptosis caused by toxin A, thus restoring barrier function and curing inflammatory responses in the gut...
February 7, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28171712/sensitization-to-common-allergens-among-patients-with-allergy-in-major-iranian-cities-a-systemic-review-and-meta-analysis
#12
Mozhgan Moghtaderi, Saeed Hosseini Teshnizi, Shirin Farjadian
Purpose: Various allergens are implicated in the pathogenesis of allergic diseases in different regions. This study attempted to identify the most common allergens among patients with allergy based on results of skin prick tests in different parts of Iran. Methods: Relevant studies were identified from the Medline database from 2000 to 2016. Six common groups of allergens including animals, cockroaches, foods, fungi, house dust mites and pollen were considered. Subgroup analysis was performed to determine prevalence of each type of allergens...
5, 2017: Epidemiology and Health
https://www.readbyqxmd.com/read/28165121/repellent-activity-of-apiaceae-plant-essential-oils-and-their-constituents-against-adult-german-cockroaches
#13
Hyo-Rim Lee, Gil-Hah Kim, Won-Sil Choi, Il-Kwon Park
No abstract text is available yet for this article.
December 26, 2016: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28125742/mode-of-action-of-the-natural-insecticide-decaleside-involves-sodium-pump-inhibition
#14
Yallappa Rajashekar, Thimmappa Shivanandappa
Decalesides are a new class of natural insecticides which are toxic to insects by contact via the tarsal gustatory chemosensilla. The symptoms of their toxicity to insects and the rapid knockdown effect suggest neurotoxic action, but the precise mode of action and the molecular targets for decaleside action are not known. We have presented experimental evidence for the involvement of sodium pump inhibition in the insecticidal action of decaleside in the cockroach and housefly. The knockdown effect of decaleside is concomitant with the in vivo inhibition of Na+, K+ -ATPase in the head and thorax...
2017: PloS One
https://www.readbyqxmd.com/read/28124649/dry-eye-disease-and-allergic-conditions-a-korean-nationwide-population-based-study
#15
Minkyeong Kim, Jong-Hyun Oh, Choul Yong Park, Sang Wha Lee
BACKGROUND: Dry eye disease (DED) is a multifactorial disease of the tears and ocular surface. No epidemiologic reports have yet been published about the relationship between DED and allergic rhinitis or sensitization to allergens. OBJECTIVE: To investigate the association between DED and allergic conditions in the general adult Korean population. METHODS: This population-based cross-sectional study included 17,542 individuals (ages ≥ 19 years) who participated in the Korea National Health and Nutrition Examination Survey (KNHANES) from 2010 to 2012...
November 1, 2016: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28111191/mutations-of-two-acidic-residues-at-the-cytoplasmic-end-of-segment-iiis6-of-an-insect-sodium-channel-have-distinct-effects-on-pyrethroid-resistance
#16
Mengli Chen, Yuzhe Du, Yoshiko Nomura, Guonian Zhu, Boris S Zhorov, Ke Dong
Mutations in sodium channels are known to confer knockdown resistance to pyrethroid insecticides, such as permethrin and cypermethrin, in various agricultural pests and disease vectors. Double mutations, D(3i28)V and E(3i32)G, were detected in cypermethrin-resistant Helicoverpa armigera and Heliothis virescens populations. However, the role of the two mutations in pyrethroid resistance remains unclear. In this study, we introduced the mutations into the cockroach sodium channel, BgNav1-1a, and examined their effects on channel gating and pyrethroid sensitivity in Xenopus oocytes...
January 20, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28108117/a-single-intervention-for-cockroach-control-reduces-cockroach-exposure-and-asthma-morbidity-in-children
#17
Felicia A Rabito, John C Carlson, Hua He, Derek Werthmann, Coby Schal
BACKGROUND: Exposure to cockroaches is an important asthma trigger, particularly for children with asthma living in inner cities. Integrated pest management is the recommended approach to cockroach abatement; however, it is costly and difficult to implement. The impact of reducing cockroach exposure on asthma outcomes is not known. OBJECTIVE: We sought to test the use of a single intervention, insecticidal bait, to reduce cockroach exposure in the home of children with asthma in New Orleans and to examine the impact of cockroach reduction on asthma outcomes...
January 10, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28106812/are-cockroaches-an-important-source-of-indoor-endotoxins
#18
Ka Man Lai
Endotoxins are common indoor biocontaminants. Their levels have been shown to link to many sources and factors. One of them is cockroach infestation but the role of cockroaches and contamination mechanisms are unclear. We hypothesized that not only is cockroach infestation a sign of poor hygiene, but it also contributes to indoor endotoxins via fecal contamination. In this study, different cockroach species were caught in homes. The endotoxin and allergen levels and their ratios in cockroach feces were determined...
January 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28102007/effects-of-diet-restriction-and-diet-complexity-on-life-history-strategies-in-side-blotched-lizards-uta-stansburiana
#19
Heather M Skinner, Andrew M Durso, Lorin A Neuman-Lee, Susan L Durham, Sarah D Mueller, Susannah S French
Organisms must balance energy invested into self-maintenance, reproduction, and somatic growth over their lifetime. In this study, the effects of diet restriction and diet complexity on side-blotched lizards (Uta stansburiana) were analyzed. Thirty male lizards, housed in the laboratory, were fed either an ad libitum or a restricted diet for 18 days (phase 1). Individuals from both treatments were then assigned to a diet of the same quantity of food that was either simple (only crickets) or complex (crickets, cockroaches, waxworms, and mealworms) for 35 days (phase 2)...
November 2016: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28101292/is-allergic-sensitization-relevant-in-severe-asthma-which-allergens-may-be-culprit
#20
REVIEW
Carlo Lombardi, Eleonora Savi, Erminia Ridolo, Giovanni Passalacqua, Giorgio Walter Canonica
Severe asthma is a major health concern. The allergic (IgE-mediated) form of asthma is well known from a pathogenic viewpoint. We searched the available literature to identify which allergens are most frequently associated with severe, refractory or life threatening asthma. According to the results, molds, pet dander, cockroach and ragweed were more frequently responsible for severe asthma. Thunderstorm asthma, in addition, represents a special association between allergic sensitization and an external climatic factor...
2017: World Allergy Organization Journal
keyword
keyword
53303
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"