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https://www.readbyqxmd.com/read/29161054/great-flood-and-aeroallergen-sensitization-in-children-with-asthma-and-or-allergic-rhinitis
#1
Nualanong Visitsunthorn, Wanwipa Chaimongkol, Kittipos Visitsunthorn, Punchama Pacharn, Orathai Jirapongsananuruk
BACKGROUND: Flooding may affect aeroallergen sensitization. OBJECTIVE: To evaluate aeroallergen sensitization in children with asthma and/or allergic rhinitis (AR) by skin prick test (SPT) before and after the great flood of 2011 in Bangkok, Thailand. METHODS: The study was performed retrospectively in asthma and/or AR children (aged 0-18 years) in Siriraj Hospital, Bangkok, Thailand from 2009 to 2013. All of the cases received SPT with common aeroallergens...
November 22, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/29114157/a-study-on-the-occurrence-of-pinworms-in-the-hindgut-of-periplaneta-americana
#2
Jayati Ghosh
American cockroach, Periplaneta americana harbours pinworms in their gut. In the present study, 88 host cockroaches were dissected and the number of adult females of each pinworm species was recorded from Barasat, North 24 Parganas, West Bengal. Three species of Oxyurid nematodes were found: Hammerschmidtiella diesingi (Hammerschmidt, Helminthologische Beiträge. Isis (oken), Leipz 5:351-358, 1838), Leidynema appendiculatum (Leidy in Proc Acad Natl Sci Phila 5:100-102, 1850) and Thelastoma sp. (Leidy in Proc Nat Acad Sci Phila 4:30, 1849)...
December 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/29084141/peatar1b-characterization-of-a-second-type-1-tyramine-receptor-of-the-american-cockroach-periplaneta-americana
#3
Wolfgang Blenau, Sabine Balfanz, Arnd Baumann
The catecholamines norepinephrine and epinephrine regulate important physiological functions in vertebrates. In insects; these neuroactive substances are functionally replaced by the phenolamines octopamine and tyramine. Phenolamines activate specific guanine nucleotide-binding (G) protein-coupled receptors (GPCRs). Type 1 tyramine receptors are better activated by tyramine than by octopamine. In contrast; type 2 tyramine receptors are almost exclusively activated by tyramine. Functionally; activation of type 1 tyramine receptors leads to a decrease in the intracellular concentration of cAMP ([cAMP]i) whereas type 2 tyramine receptors can mediate Ca(2+) signals or both Ca(2+) signals and effects on [cAMP]i...
October 30, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29062843/utility-of-mtdna-coi-barcode-region-for-phylogenetic-relationship-and-diagnosis-of-five-common-pest-cockroaches
#4
Saedeh Sadat Hashemi-Aghdam, Golnaz Rafie, Sanaz Akbari, Mohammad Ali Oshaghi
BACKGROUND: Cockroaches are of vital importance medically and hygienically as they can disperse human pathogenic agents and are especially responsible for food contamination and spreading of food borne pathogens. In this study, part of mtDNA-COI gene of five common pest cockroaches was tested for diagnostic and phylogenetic purposes. METHODS: We have described barcode region of mtDNA-COI gene of five cockroach species: Blattella germanica, Blatta orientalis, Periplaneta americana, Shelfordella lateralis, and Supella longipalpa, along with the development of a PCR-RFLP method for rapid detection and differentiation of these health pest species...
June 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29029091/cockroach-oothecal-parasitoid-evania-appendigaster-hymenoptera-evaniidae-exhibits-oviposition-preference-towards-oothecal-age-most-vulnerable-to-host-cannibalism
#5
Hui-Siang Tee, Chow-Yang Lee
Many female parasitoid wasps optimize host selection to balance the benefits of high-quality hosts and the costs of predator- or hyperparasitoid-induced mortality risks to maximize their fitness. Cannibalism exists in many insect species and affects survival of parasitoid larvae developing in or on parasitized hosts. However, little is known about how parasitoid wasps resolve the fitness consequence of host cannibalism-induced mortality risk during host selection. We examined the effect of oothecal age on cannibalism in the American cockroach Periplaneta americana (L...
September 27, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28990095/kangfuxin-promotes-apoptosis-of-gastric-cancer-cells-through-activating-er%C3%A2-stress-and-autophagy
#6
Pian-Pian Chen, Xiu-Ying Ma, Qian Lin, He-Lin Xu, Hong-Xue Shi, Hong-Yu Zhang, Jian Xiao, Fu-Neng Geng, Ying-Zheng Zhao
Gastric cancer is a leading cause of cancer‑associated mortality worldwide. In studies on the mechanisms of antigastric cancer drugs, autophagy and endoplasmic reticulum (ER) stress have been demonstrated to serve an active role in gastric cancer. The organic extract of Periplaneta americana (also termed American Cockroach), which is named Kangfuxin (KFX) in China, has been used clinically as a traditional Chinese medicine against disorders, including stomach bleeding, gastric ulcers, tuberculosis, burns and trauma...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28949065/the-american-cockroach-peptide-periplanetasin-4-inhibits-clostridium-difficile-toxin-a-induced-cell-toxicities-and-inflammatory-responses-in-the-mouse-gut
#7
I Na Yoon, Li Fang Lu, Ji Hong, Peng Zhang, Dae Hong Kim, Jin Ku Kang, Jae Sam Hwang, Ho Kim
Many reports have shown that crude extracts of the American cockroach have therapeutic effects on inflammation. In a previous study, our research group showed that an antimicrobial peptide (Periplanetasin-2) derived from the American cockroach via de novo transcriptome analysis inhibited apoptosis of human colonocytes and inflammatory responses of the mouse gut caused by Clostridium difficile toxin A. Here, we examined whether Periplanetasin-4 (Peri-4), another antimicrobial peptide identified via de novo transcriptome analysis of the American cockroach, could also inhibit the various toxicities induced by C...
September 26, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28942048/the-cockroach-periplaneta-americana-as-a-potential-paratenic-host-of-the-lungworm-aelurostrongylus-abstrusus
#8
Luigi Falsone, Vito Colella, Ettore Napoli, Emanuele Brianti, Domenico Otranto
INTRODUCTION: Aelurostrongylus abstrusus is a well-known nematode affecting the respiratory system of felids worldwide. Snails and slugs act as intermediate hosts of this parasite, whereas rodents, birds and reptiles may serve as paratenic hosts. Periplaneta americana, the American brown cockroach, shares the same habitat and ecological features (e.g. nocturnal activity) with both snails and cats. The aim of this study was to evaluate the capability of P. americana to maintain alive A...
November 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28919922/anti-tumor-effects-of-the-american-cockroach-periplaneta-americana
#9
REVIEW
Yanan Zhao, Ailin Yang, Pengfei Tu, Zhongdong Hu
Since the incidence of cancer has been on the rise due to increasing exposure to various carcinogenic factors in recent years, cancer has gradually become the first killer to the health of human beings. A growing attention has been paid to anti-cancer effects of traditional Chinese medicine (TCM) with low toxicity and good efficacy. As a kind of TCM, Periplaneta americana (P. americana) has a good effect on clinical application, and its anti-tumor effects has been increasingly well studied. In this review, the research progress on the anti-tumor effects of P...
2017: Chinese Medicine
https://www.readbyqxmd.com/read/28913989/patterns-of-inhalant-allergen-sensitization-and-geographical-variation-in-korean-adults-a-multicenter-retrospective-study
#10
Min Gyu Kang, Mi Yeong Kim, Woo Jung Song, Sujeong Kim, Eun Jung Jo, Seung Eun Lee, Jae Woo Kwon, Sang Min Lee, Chan Sun Park, Hye Kyung Park, Heung Woo Park, Yoon Seok Chang, Jaechun Lee, Young Min Lee, Young Koo Jee, Jong Myung Lee, Inseon S Choi, Sang Heon Cho
PURPOSE: Inhalant allergen sensitization is one of the major factors involved in the pathogenesis of allergic respiratory diseases. However, the sensitization is determined by interactions between genetic and environmental factors. Thus, testing panels of inhalant allergens may differ among geographical areas. Here we aimed to determine 10 common inhalant allergens in Korean adult patients with suspected respiratory allergies and to examine the variation between different geographical locations...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28840814/molecular-characterization-and-phylogeny-of-four-new-species-of-the-genus-trichonympha-parabasalia-trichonymphea-from-lower-termite-hindguts
#11
Vittorio Boscaro, Erick R James, Rebecca Fiorito, Elisabeth Hehenberger, Anna Karnkowska, Javier Del Campo, Martin Kolisko, Nicholas A T Irwin, Varsha Mathur, Rudolf H Scheffrahn, Patrick J Keeling
Members of the genus Trichonympha are among the most well-known, recognizable and widely distributed parabasalian symbionts of lower termites and the wood-eating cockroach species of the genus Cryptocercus. Nevertheless, the species diversity of this genus is largely unknown. Molecular data have shown that the superficial morphological similarities traditionally used to identify species are inadequate, and have challenged the view that the same species of the genus Trichonympha can occur in many different host species...
September 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28820587/flupyrimin-a-novel-insecticide-acting-at-the-nicotinic-acetylcholine-receptors
#12
Yasumichi Onozaki, Ryo Horikoshi, Ikuya Ohno, Shigeki Kitsuda, Kathleen A Durkin, Tomonori Suzuki, Chiaki Asahara, Natsuko Hiroki, Rena Komabashiri, Rikako Shimizu, Shogo Furutani, Makoto Ihara, Kazuhiko Matsuda, Masaaki Mitomi, Shinzo Kagabu, Katsuhito Uomoto, Motohiro Tomizawa
A novel chemotype insecticide flupyrimin (FLP) [N-[(E)-1-(6-chloro-3-pyridinylmethyl)pyridin-2(1H)-ylidene]-2,2,2-trifluoroacetamide], discovered by Meiji Seika Pharma, has unique biological properties, including outstanding potency to imidacloprid (IMI)-resistant rice pests together with superior safety toward pollinators. Intriguingly, FLP acts as a nicotinic antagonist in American cockroach neurons, and [(3)H]FLP binds to the multiple high-affinity binding components in house fly nicotinic acetylcholine (ACh) receptor (nAChR) preparation...
September 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28767688/cross-reaction-between-formosan-termite-coptotermes-formosanus-proteins-and-cockroach-allergens
#13
Christopher P Mattison, Taruna Khurana, Matthew R Tarver, Christopher B Florane, Casey C Grimm, Suman B Pakala, Carrie B Cottone, Claudia Riegel, Yvette Bren-Mattison, Jay E Slater
Cockroach allergens can lead to serious allergy and asthma symptoms. Termites are evolutionarily related to cockroaches, cohabitate in human dwellings, and represent an increasing pest problem in the United States. The Formosan subterranean termite (Coptotermes formosanus) is one of the most common species in the southern United States. Several assays were used to determine if C. formosanus termite proteins cross-react with cockroach allergens. Expressed sequence tag and genomic sequencing results were searched for homology to cockroach allergens using BLAST 2...
2017: PloS One
https://www.readbyqxmd.com/read/28733329/the-antifungal-activity-of-the-peptide-periplanetasin-2-derived-from-american-cockroach-periplaneta-americana
#14
JiEun Yun, Jae-Sam Hwang, Dong Gun Lee
The cockroach, which is a household insect, is an established model organism in research. Periplanetasin-2, derived from the American cockroach Periplaneta americana, exerted potent antifungal effect against pathogenic fungi without causing hemolysis. Periplanetasin-2 induced oxidative stress by generation of reactive oxygen species (ROS) and lipid peroxidation. Periplanetasin-2 also caused apoptosis by exposure of phosphatidylserine and fragmentation of DNA, exerted in a concentration-dependent manner. Hence, we investigated the mitochondrial apoptotic mechanism of periplanetasin-2 in Candida albicans After treatment with periplanetasin-2, we observed mitochondrial depolarization and calcium accumulation...
August 22, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28719023/identification-of-odorant-binding-and-chemosensory-protein-genes-and-the-ligand-affinity-of-two-of-the-encoded-proteins-suggest-a-complex-olfactory-perception-system-in-periplaneta-americana
#15
P He, Z-Q Li, Y-F Zhang, L Chen, J Wang, L Xu, Y-N Zhang, M He
The American cockroach (Periplaneta americana) is an urban pest with a precise chemosensory system that helps it achieve complex physiological behaviours, including locating food and mating. However, its chemosensory mechanisms have not been well studied. Here, we identified 71 putative odorant carrier protein genes in P. americana, including 57 new odorant-binding proteins (OBPs) and 11 chemosensory proteins (CSPs). To identify their physiological functions, we investigated their tissue expression patterns in antennae, mouthparts, legs, and the remainder of the body of both sexes, and determined that most of these genes were expressed in chemosensory organs...
July 18, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28606470/mechanistic-evaluation-of-gastroprotective-effects-of-kangfuxin-on-ethanol-induced-gastric-ulcer-in-mice
#16
Yongmei Shen, Jia Sun, Chao Niu, Dongdong Yu, Zhiwei Chen, Weitao Cong, Funeng Geng
This study was designed to evaluate the gastroprotective effect of Kangfuxin (KFX), a Chinese patent medicine constituent isolated from American cockroach, on ethanol-induced gastric ulcer in mice and to elucidate the potential mechanisms of the effect involved. According to the results, mice treated with alcohol appeared obvious gastric mucosal injury, while treatment with Cimetidine (a positive control) and KFX significantly relieved the damage, along with decreased oxidative stress and apoptosis indexes...
August 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28573241/mechanisms-underlying-action-of-xinmailong-injection-a-traditional-chinese-medicine-in-cardiac-function-improvement
#17
Zhengtao Li, Sujuan Li, Lin Hu, Fang Li, Alex Chun Cheung, Weizai Shao, Yuling Que, George Pek-Heng Leung, Cui Yang
BACKGROUND: As a bioactive composite extracted from American cockroach, Xinmailong injection (XML) is used for the treatment of congestive heart failure (CHF) in China. Clinical data has provided evidence that XML has positive inotropic properties. The objective of this study was to assess the mechanisms involved in the therapeutical effect of XML on CHF. MATERIALS AND METHODS: The effects of XML on the cardiac function in isolated rat heart were measured. A Ca(2+) imaging technology was used in rat cardiomyocytes (H9c2 cells) to reveal the role of XML on Ca(2+) channels...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28548451/molecular-and-functional-characterization-of-the-american-cockroach-periplaneta-americana-rab5-the-first-exopterygotan-low-molecular-weight-ovarian-gtpase-during-oogenesis
#18
Mohamed Elmogy, Amr A Mohamed, Muhammad Tufail, Tomohide Uno, Makio Takeda
The small Rab GTPases are key regulators of membrane vesicle trafficking. Ovaries of Periplaneta americana (Linnaeus) (Blattodea: Blattidae) have small molecular weight GTP/ATP-binding proteins during early and late vitellogenic periods of oogenesis. However, the identification and characterization of the detected proteins have not been yet reported. Herein, we cloned a cDNA encoding Rab5 from the American cockroach, P. americana, ovaries (PamRab5). It comprises 796 bp, encoding a protein of 213 amino acid residues with a predicted molecular weight of 23...
May 26, 2017: Insect Science
https://www.readbyqxmd.com/read/28506564/contamination-of-cockroaches-insecta-blattaria-to-medically-fungi-a-systematic-review-and-meta-analysis
#19
REVIEW
H Nasirian
INTRODUCTION: Fungal infections have emerged worldwide. Cockroaches have been proved vectors of medically fungi. METHODS: A systematic meta-analysis review about cockroach fungal contamination was investigated. Relevant topics were collected between January 2016 and January 2017. After a preliminary review among 392 collected papers, 156 were selected to become part of the detailed systematic meta-analysis review. RESULTS: Cockroaches contaminated to 38 fungi species belonging to 19 families and 12 orders...
May 11, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28475112/insect-active-toxins-with-promiscuous-pharmacology-from-the-african-theraphosid-spider-monocentropus-balfouri
#20
Jennifer J Smith, Volker Herzig, Maria P Ikonomopoulou, Sławomir Dziemborowicz, Frank Bosmans, Graham M Nicholson, Glenn F King
Many chemical insecticides are becoming less efficacious due to rising resistance in pest species, which has created much interest in the development of new, eco-friendly bioinsecticides. Since insects are the primary prey of most spiders, their venoms are a rich source of insect-active peptides that can be used as leads for new bioinsecticides or as tools to study molecular receptors that are insecticidal targets. In the present study, we isolated two insecticidal peptides, µ/ω-TRTX-Mb1a and -Mb1b, from venom of the African tarantula Monocentropus balfouri...
May 5, 2017: Toxins
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