Displaying publications 1 - 20 of 25 in total

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  1. Fulltext Domiciliary cockroaches found in restaurants in five zones of Kuala Lumpur Federal Territory, peninsular Malaysia
    Jeffery J, Sulaiman S, Oothuman P, Vellayan S, Zainol-Ariffin P, Paramaswaran S, et al.
    Trop Biomed, 2012 Mar;29(1):180-6.
    PMID: 22543619 MyJurnal
    The following domiciliary cockroaches were collected from restaurants in five zones of Kuala Lumpur Federal Territory, Malaysia using 1L glass beaker traps baited with ground mouse-pellets: Periplaneta americana (Linnaeus) (n = 820), Periplaneta brunnea Burmeister (n = 46), Blattella germanica (Linnaeus) (n = 12504), Supella longipalpa (Fabricius) (n = 321), Symploce pallens Stephens (n = 29) and Neostylopyga rhombifolia (Stoll) (n = 5). The following bacteria were isolated from 10 cockroach specimens: Enterobacter cloacae, Klebsiella pneumoniae ssp. pneumoniae, Klebsiella pneumoniae ssp. rhinoscleromatis and Serratia liquefaciens from 5 B. germanica; Acinetobacter calcoaceticus var. anitratus, Citrobacter diversus/amalonaticus, Escherichia vulneris and K.p. pneumoniae from 3 P. brunnea; and Citrobacter freundii, Enterobacter agglomerans 4, Escherichia adecarboxylate, E. vulneris, K. p. pneumonia, K. p. rhinoscleromatis and Proteus vulgeris from 2 P. americana.
    Matched MeSH terms: Cockroaches/classification*; Cockroaches/growth & development*; Cockroaches/microbiology
  2. Periplaneta americana (L.) as intermediate host of Moniliformis moniliformis (Bremser) in Penang, Malaysia
    Anuar AK, Paran TP
    Southeast Asian J. Trop. Med. Public Health, 1976 Sep;7(3):415-6.
    PMID: 1025741
    Matched MeSH terms: Cockroaches/parasitology*
  3. Fulltext Comparative susceptibility of Periplaneta americana (L) to five pyrethroid insecticides
    Vythilingam I, Sutivigit Y
    Southeast Asian J. Trop. Med. Public Health, 1994 Sep;25(3):528-31.
    PMID: 7777920
    Five pyrethroids namely, lambda-cyhalothrin, permethrin, deltamethrin, cyfluthrin and alpha-cypermethrin were evaluated using adult male and female cockroaches, Periplaneta americana (L). The American cockroaches were exposed for 10 minutes to glass jars treated with different concentrations of the five pyrethroids. The cockroaches were susceptible to all five pyrethroids and the susceptibility based on LC50 and LC50 were observed to be in the following order: lambda-cyhalothrin > permethrin > deltamethrin > cyfluthrin > alpha-cypermethrin The results showed that lambda-cyhalothrin was the most effective and alpha-cypermethrin was the least effective against Periplaneta americana (L).
    Matched MeSH terms: Cockroaches*
  4. Bacterial pathogens isolated from cockroaches trapped from paediatric wards in peninsular Malaysia
    Oothuman P, Jeffery J, Aziz AH, Abu Bakar E, Jegathesan M
    Trans R Soc Trop Med Hyg, 1989 1 1;83(1):133-5.
    PMID: 2603192
    A survey was conducted in 4 paediatric wards in Malaysia to determine the distribution of various species of cockroaches and to examine their gut contents for bacteria. Cockroaches were trapped from food dispensing areas (kitchens), store rooms, cupboards and open wards. 104 cockroaches were caught, consisting of Periplaneta americana (67.3%), Blattella germanica (26%), P. brunnea (4.8%), and Supella longipalpa (1.9%). Bacteria were isolated from all cockroaches except 3 P. americana. Many bacterial species were identified, including the pathogenic and potentially pathogenic species Shigella boydii, S. dysenteriae, Salmonella typhimurium, Klebseilla oxytoca, K. ozaena and Serratia marcescens.
    Matched MeSH terms: Cockroaches/microbiology*
  5. Insects of Tasik Chini with special emphasis on Ichneumonid wasps
    Idris A, Ismail S, Haron Y, Suhana Y
    Sains Malaysiana, 2009;38.
    A preliminary study on selected insect communities of Tasik Chini was conducted from 27th May to 2nd June 2004 along three trails namely trail to Sg. Gumum, trail to Kampung Melai and trail to old tin mining area. A total of eight Malaise traps were installed along the trail to Sg. Gumum while sweeping net and 10 yellow pan traps per trail were used to sample insects along the other two trails. A total of 502 insect individuals consisting of eight orders and 46 families were successfully collected. Of these, the hymenopterans (ants and wasps) had the most number (298 individuals and 11 families) while the Blattaria was the least number (six individuals and two families). Of the hymenopterans, the ichneumonids had the most individuals collected (52) followed by evaniid (50) and vespid wasps (41). For the Coleopterans, Cleridae were the most collected (26) during this short study followed by Anthribidae (13). There were 62 of individuals Odonata consisting of 9 species identified.
    Matched MeSH terms: Cockroaches
  6. Fulltext Insecticide resistance status and mechanisms in Malaysian Blattella germanica (Linnaeus)
    Lee HL, Tien WD, Omar B
    Southeast Asian J. Trop. Med. Public Health, 1997 Mar;28(1):212-7.
    PMID: 9322308
    The insecticide resistance status of 4 strains of adult male Blattella germanica, viz M (Malacca), E (England), F (restaurant) and K (cafeteria) against malathion and bendiocarb compared with a reference susceptible strain (S) was determined by using a modified WHO bioassay method. The results indicated that all the 4 strains were resistant to the insecticides albeit in different degrees. Resistance ratios for malathion ranged from 1.85-41.07-fold, whereas that of bendiocarb ranged from 1.68-4.83-fold. The biochemical microplate enzyme assays technique employed indicated that the resistance in M and E strains were attributed to acetylcholinesterase insensitivity. Multiple resistance was not detected in any of the 4 strains. Parameters of the identified resistance mechanism correlated well with the observed level of resistance. Agar gel electrophoresis showed that variations in esterase isoenzymes did not confer organophosphate and carbamate resistance to the 4 strains.
    Matched MeSH terms: Cockroaches*
  7. Fulltext Evaluation of the chemical defense fluids of Macrotermes carbonarius and Globitermes sulphureus as possible household repellents and insecticides
    Appalasamy S, Diyana MHA, Arumugam N, Boon JG
    Sci Rep, 2021 01 08;11(1):153.
    PMID: 33420232 DOI: 10.1038/s41598-020-80018-5
    The use of chemical insecticides has had many adverse effects. This study reports a novel perspective on the application of insect-based compounds to repel and eradicate other insects in a controlled environment. In this work, defense fluid was shown to be a repellent and insecticide against termites and cockroaches and was analyzed using gas chromatography-mass spectrometry (GC-MS). Globitermes sulphureus extract at 20 mg/ml showed the highest repellency for seven days against Macrotermes gilvus and for thirty days against Periplaneta americana. In terms of toxicity, G. sulphureus extract had a low LC50 compared to M. carbonarius extract against M. gilvus. Gas chromatography-mass spectrometry analysis of the M. carbonarius extract indicated the presence of six insecticidal and two repellent compounds in the extract, whereas the G. sulphureus extract contained five insecticidal and three repellent compounds. The most obvious finding was that G. sulphureus defense fluid had higher potential as a natural repellent and termiticide than the M. carbonarius extract. Both defense fluids can play a role as alternatives in the search for new, sustainable, natural repellents and termiticides. Our results demonstrate the potential use of termite defense fluid for pest management, providing repellent and insecticidal activities comparable to those of other green repellent and termiticidal commercial products.
    Matched MeSH terms: Cockroaches/drug effects
  8. The influence of host stage and sex upon the size and composition of the thelastomatids parasitic in the hindgut of Periplaneta americana L. and Neostylopyga rhombifolia (Stoll)
    Anuar AK, Rodzoh S
    Med J Malaysia, 1978 Sep;33(1):76-85.
    PMID: 750901
    Matched MeSH terms: Cockroaches/parasitology*
  9. Fulltext Current practices and future trends in cockroach allergen immunotherapy
    Reginald K, Chew FT
    Mol Immunol, 2023 Sep;161:11-24.
    PMID: 37480600 DOI: 10.1016/j.molimm.2023.07.004
    PURPOSE OF REVIEW: This review evaluates the current modes of allergen-specific immunotherapy for cockroach allergens, in terms of clinical outcomes and explores future trends in the research and development needed for a more targeted cockroach immunotherapy approach with the best efficacy and minimum adverse effects.

    SUMMARY: Cockroach allergy is an important risk factor for allergic rhinitis in the tropics, that disproportionately affects children and young adults and those living in poor socio-economic environments. Immunotherapy would provide long-lasting improvement in quality of life, with reduced medication intake. However, the present treatment regime is long and has a risk of adverse effects. In addition, cockroach does not seem to have an immuno-dominant allergen, that has been traditionally used to treat allergies from other sources. Future trends of cockroach immunotherapy involve precision diagnosis, to correctly identify the offending allergen. Next, precision immunotherapy with standardized allergens, which have been processed in a way that maintains an immunological response without allergic reactions. This approach can be coupled with modern adjuvants and delivery systems that promote a Th1/Treg environment, thereby modulating the immune response away from the allergenic response.

    Matched MeSH terms: Cockroaches*
  10. Fulltext Parasitic Gregarine blattarum Found Infecting American Cockroaches, Periplaneta americana, in a Population in Pulau Pinang, Malaysia
    Yahaya ZS, Izzaudin NA, Razak AF
    Trop Life Sci Res, 2017 Jan;28(1):145-149.
    PMID: 28228922 MyJurnal DOI: 10.21315/tlsr2017.28.1.10
    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.
    Matched MeSH terms: Cockroaches
  11. Fulltext Biorational control programme for the German cockroach (Blattaria: Blattellidae) in selected urban communities
    Shahraki G, Bin Ibrahim Y, Noor HM, Rafinejad J, Shahar MK
    Trop Biomed, 2010 Aug;27(2):226-35.
    PMID: 20962720 MyJurnal
    This study assessed the effectiveness of a biorational control approach using 2% hydramethylnon gel bait on German cockroaches, Blattella germanica (L.) in some residential and hospital buildings in South Western Iran. In total, three buildings consisting of 150 apartment units and 101 hospital units were monitored weekly via sticky trap for German cockroach infestations over a period of eight months. These infested units were randomly subjected to intervention and control treatments. Pamphlets and posters were provided and lectures were given to support the educational programmes as a tactic of the biorational system. Survey on cockroach index for intervention units showed 67-94% recovery to achieve clean level of infestation for intervention units of the residential buildings and 83% for the hospital. Mean percentage reductions for treatment groups throughout the 15-week treatment period were 76.8% for the residential buildings and 88.1% for the hospital, showing significant differences compared to the control groups. Linear regression of infestation rates were recorded weekly after treatment and their negative slope for treatment groups substantiated significant reductions for interventions. The results of this study showed that biorational control method, using gel bait, educational programmes and sanitation, is an effective way to manage German cockroach infestation.
    Matched MeSH terms: Cockroaches/classification; Cockroaches/drug effects*
  12. A new species of cockroach, Periplaneta gajajimana sp. nov., collected in Gajajima, Kagoshima Prefecture, Japan
    Komatsu N, Lio H, Ooi HK
    Trop Biomed, 2021 Jun 01;38(2):48-52.
    PMID: 33973572 DOI: 10.47665/tb.38.2.036
    We described a new species of cockroach, Periplaneta gajajimana sp. nov., which was collected in Gajajima, Kagoshima-gun Toshimamura, Kagoshima Prefecture, Japan, on November 2012. The new species is characterized by its reddish brown to blackish brown body, smooth surface pronotum, well developed compound eyes, dark brown head apex, dark reddish brown front face and small white ocelli connected to the antennal sockets. In male, the tegmen tip reach the abdomen end or are slightly shorter, while in the female, it does not reach the abdominal end and exposes the abdomen beyond the 7th abdominal plate. We confirmed the validity of this new species by breeding the specimens in our laboratory to demonstrate that the features of the progeny were maintained for several generations. For comparison and easy identification of this new species, the key to species identification of the genus Periplaneta that had been reported in Japan to date are also presented.
    Matched MeSH terms: Cockroaches
  13. First Report of Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelidae) as a museum insect pest in Malaysia
    Heo CC, Hidayatulfathi Othman, Nazni Wasi Ahmad, Heah SK, Lee HL, Jeffery J, et al.
    Sains Malaysiana, 2010;39:315-320.
    This paper reports the infestation of psocid, Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelidae) in the insect museum at Medical Entomology Unit, Institute for Medical Research, Kuala Lumpur. These tiny organisms were recognised as museum insect pest and found frequently in the insect boxes containing mosquitoes, flies, cockroaches and butterflies. They feed on dead insect specimens and cause severe physical damages to the valuable reference specimens collected in the early 20th century. Hence, it is important to control their population immediately to prevent them from causing further deterioration to the museum collection.
    Matched MeSH terms: Cockroaches
  14. Fauna diversity in pitcher plants at Setiam Hill, Bintulu, Sarawak, Malaysia
    Marina M, John Keen C, Caroline B, Afsar J
    Sains Malaysiana, 2018;47:19-25.
    A study was carried out to determine the diversity and enumerate the fauna species related to five pitcher plant species at a selected area in Bukit Setiam Forest, Tatau, Bintulu, Sarawak, Malaysia. At the end of the study, six insect orders together with nematodes and Araneae were detected with different existence abundances and diversity. From the 901 total fauna trapped, 58.82% belonged to the order Hymenoptera, mainly of the ant species, followed by Nematodes (21.64%), Diptera (15.87%), Coleoptera (1.66%), Hemiptera (0.89%), Blattaria (0.44%) and finally, Lepidoptera (0.33%) and Araneae (0.33%). Significant differences (p<0.05) in the composition of insect trapped in pitcher plants were observed for the order Hymenoptera, Diptera, Lepidoptera, Hemiptera and even Nematodes. Meanwhile, no significant difference was observed for Coleoptera, Blattaria and Araneae. There is a strong relationship between fauna and Nepenthes pitcher either as a prey, predator, a mutualistic relationship or parasites or also for a habitat to live or to reproduce.
    Matched MeSH terms: Cockroaches
  15. Fulltext Prevalence of Blastocystis in animals from domesticated surroundings
    Chuong LS, Suresh K, Mak JW, Init I, Kathijah O
    Southeast Asian J. Trop. Med. Public Health, 1996 Dec;27(4):850-2.
    PMID: 9253897
    Matched MeSH terms: Cockroaches/parasitology
  16. An investigation of aeroallergens affecting urban Malaysian asthmatics
    Sam CK, Soon SC, Liam CK, Padmaja K, Cheng HM
    Asian Pac J Allergy Immunol, 1998 Mar;16(1):17-20.
    PMID: 9681124
    We investigated the aeroallergens affecting 200 asthmatics from the University Hospital in Kuala Lumpur, Malaysia and found 164 (82%) patients with skin prick test (SPT) reactivity to one or more of a panel of 14 allergens, which included indoor and outdoor animal and plant aeroallergens. Reactivity was most frequent to the indoor airborne allergens, with 159 (79.5%) reacting to either or both house dust mite (Dermatophagoides) species and 87 (43.5%) to cockroach. The SPT reactivity to house dust mites corresponded with the finding that patients found house dust to be the main precipitant of asthmatic attacks.
    Matched MeSH terms: Cockroaches/immunology
  17. Fulltext Cockroaches from urban human dwellings: isolation of bacterial pathogens and control
    Vythilingam I, Jeffery J, Oothuman P, Abdul Razak AR, Sulaiman A
    Southeast Asian J. Trop. Med. Public Health, 1997 Mar;28(1):218-22.
    PMID: 9322309
    A study was carried out to determine the distribution of cockroaches in two different housing areas with central sewerage or individual septic tanks in an urban area in Kuala Lumpur, Malaysia. Six species of cockroaches were present and of these Periplaneta americana and Periplaneta brunnea were found in greater abundance. Seventeen species of bacteria were isolated and of these Escherichia coli and Klebsiella p. pneumoniae were isolated in greatest numbers. Control measures carried out using lambda cyhalothrin showed that there was no significant difference between treated and control sites.
    Matched MeSH terms: Cockroaches/microbiology*
  18. Fulltext Bacterial pathogens from the intestinal tracts of various species of cockroaches
    Rampal L, Oothuman P, Jeffery J, Daud MZ, Shekhar C, Senan P, et al.
    Med J Malaysia, 1983 Jun;38(2):104-7.
    PMID: 6353184
    Bacterial isolates were made from the intestinal tracts ofcarious species of cockroaches (Periplaneta americana, Periplaneta brunnea, Periplaneta australasiae, Neostylopyga rhombifolia, Nauphoeta cinerea) trapped from kitchens and stores (houses and hospital), Shigello, flexneri, Salmonella typhi, Escherichia coli and Salmonella sp. were some of the bacteria isolated and identified.
    Matched MeSH terms: Cockroaches/microbiology*
  19. Identification and characterization of antibacterial compound(s) of cockroaches (Periplaneta americana)
    Ali SM, Siddiqui R, Ong SK, Shah MR, Anwar A, Heard PJ, et al.
    Appl Microbiol Biotechnol, 2017 Jan;101(1):253-286.
    PMID: 27743045 DOI: 10.1007/s00253-016-7872-2
    Infectious diseases remain a significant threat to human health, contributing to more than 17 million deaths, annually. With the worsening trends of drug resistance, there is a need for newer and more powerful antimicrobial agents. We hypothesized that animals living in polluted environments are potential sources of antimicrobials. Under polluted milieus, organisms such as cockroaches encounter different types of microbes, including superbugs. Such creatures survive the onslaught of superbugs and are able to ward off disease by producing antimicrobial substances. Here, we characterized antibacterial properties in extracts of various body organs of cockroaches (Periplaneta americana) and showed potent antibacterial activity in crude brain extract against methicillin-resistant Staphylococcus aureus and neuropathogenic Escherichia coli K1. The size-exclusion spin columns revealed that the active compound(s) are less than 10 kDa in molecular mass. Using cytotoxicity assays, it was observed that pre-treatment of bacteria with lysates inhibited bacteria-mediated host cell cytotoxicity. Using spectra obtained with LC-MS on Agilent 1290 infinity liquid chromatograph, coupled with an Agilent 6460 triple quadruple mass spectrometer, tissues lysates were analysed. Among hundreds of compounds, only a few homologous compounds were identified that contained the isoquinoline group, chromene derivatives, thiazine groups, imidazoles, pyrrole-containing analogs, sulfonamides, furanones, and flavanones and known to possess broad-spectrum antimicrobial properties and anti-inflammatory, anti-tumour, and analgesic properties. Further identification, characterization, and functional studies using individual compounds can act as a breakthrough in developing novel therapeutics against various pathogens including superbugs.
    Matched MeSH terms: Cockroaches/chemistry*
  20. Fulltext Insect community in riparian zones of Sungai Sepetang, Sungai Rembau and Sungai Chukai of Peninsular Malaysia
    Abdullah NA, Radzi SNF, Asri LN, Idris NS, Husin S, Sulaiman A, et al.
    Biodivers Data J, 2019;7:e35679.
    PMID: 31582889 DOI: 10.3897/BDJ.7.e35679
    Riparian areas hold vast number of flora and fauna with exceptional contributions to the ecosystem. A study was conducted in Sungai Sepetang, Sungai Rembau and Sungai Chukai to identify the insect community in a riparian zone of Peninsular Malaysia. Sampling was conducted in six consecutive months from December 2017 to May 2018 during both day and night using sweep nets. Twenty sampling stations (S1-S20) had been assembled along the riverbanks with an average distance of 200 m between each station. The 17,530 collected insects were from 11 orders and consisted of Diptera, Coleoptera, Hemiptera, Hymenoptera, Lepidoptera, Neuroptera, Orthoptera, Blattodea, Thysanoptera, Mantodea and Odonata. The three most abundant orders were Diptera (33.84%; 5933 individuals), Coleoptera (28.82%; 5053 individuals) and Hemiptera (25.62%: 4491 individuals). The collected insect community consisted of different guilds such as the scavenger, predator, herbivore, pollinator and parasitoid. Sungai Sepetang and Sungai Rembau were dominated by mangrove flora, Sonneratia caseolaris (Myrtales: Lythraceae), while Sungai Chukai was dominated by Barringtonia racemosa. There was a significant difference (p < 0.05) in the composition of insects between the three rivers though clustering analysis showed that the insect communities in Sungai Sepetang and Sungai Rembau were 100% similar compared to Sungai Chukai which consisted of a totally different community. There is a significant negative correlation between abundance of insects with salinity and wind speed at Sungai Chukai and Sungai Sepetang.
    Matched MeSH terms: Cockroaches
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