Displaying publications 1 - 20 of 77 in total

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  1. New species of Bakeria (Nematoda; Strongylida; Molineidae), new species of Falcaustra (Nematoda; Ascaridida; Kathlaniidae) and other helminths in Cnemaspis mcguirei (Sauria; Gekkonidae) from Peninsular Malaysia
    Bursey CR, Goldberg SR, Grismer LL
    Acta Parasitol, 2014 Oct;59(4):643-52.
    PMID: 25236275 DOI: 10.2478/s11686-014-0299-y
    Two new nematode species, Bakeria schadi sp. nov. and Falcaustra malaysiaia sp. nov. from the gastrointestinal tract of McGuire's rock gecko, Cnemaspis mcguirei (Sauria: Gekkonidae) collected in Peninsular Malaysia are described. The two species now assigned to Bakeria are separated on the bases of male bursa type and location of the excretory pore: type II in B. schadi sp. nov. and type I in B. bakeri; location of excretory pore, anterior to nerve ring in B. schadi sp. nov. and posterior to nerve ring in B. bakeri. Falcaustra malaysiaia sp. nov. is most similar to F. chabaudi, F. concinnae, F. condorcanquii, F. barbi, F. dubia, and F. tchadi in that these 7 species possess 1 pseudosucker, 1 median papilla plus 10 pairs caudal papillae, and spicules with lengths between 1 and 2 mm. F. barbi and F. tchadi lack adcloacal papillae; the remaining 5 species possess 1 pair of adcloacal papillae. Falcaustra chabaudi is known from Nearctic salamanders; F. concinnae from Nearctic turtles; F. condorcanquii from Neotropical frogs, F. dubia from Oriental frogs, and F. malaysiaia sp. nov. from Oriental geckos. Two additional species of Nematoda were found, Cosmocerca ornata and Meteterakis singaporensis. Cnemaspis mcguirei represents a new host record for Cosmocerca ornata and Meteterakis singaporensis.
    Matched MeSH terms: Nematoda/classification*; Nematoda/isolation & purification
  2. [Four new species of heligmosome nematodes, intestinal parasites of a Malyan Trichys lipura Günther; comparison with the Congolese fauna of Atherurs]
    Durette-Desset MC, Diaw O, Krishnasamy M
    Ann Parasitol Hum Comp, 1975 Jul-Aug;50(4):477-91.
    PMID: 1211775
    Description of four new species of Heligmosome Nematodes parasites of the gut of Trichys lipura: --Heligmonella limbooliati n. sp. has a synlophe of Heligmonella-type and a bursa related to Cordicauda. --Cordicauda trichysi n. sp. is characterized by the relatively small dorsal lobe of the bursa, numerous cuticular ridges and the origin of the 8th rib at the distal third of the dorsal rib. --C. malayensis is closely related to C. trichysi (the female of the two species are morphologically identical but the two species can be separated by the larger dorsal lobe of the bursa and the longer spicula of C. malayensis). --C. magnabursa n. sp. is separated from the other species of the genus by the peculiar morphology of the bursa and the female's tail, dorsally bent. The fauna of Trichys is compared to that of Atherurss africanus, which is parasitized by 8 coparasites species: One Heligmonella and seven Paraheligmonina. From a phyletic as well as an ecological point of view (relative abundance and species location in the gut) the two fauna seem to have evolved in a parallel way, one in Africa, one in Asia, from a single Heligmonella type Nematode, after the host's partition.
    Matched MeSH terms: Nematoda/classification*; Nematoda/cytology
  3. [Description of two new species of the genus Orientostrongylus Durette-Desset, 1971 (Nematoda, Heligmosomidae) from a Tupaïnae and a Petauristinae in Malaysia (author's transl)]
    Durette-Desset MC, Liat LB
    Ann Parasitol Hum Comp, 1974 Nov-Dec;49(6):669-75.
    PMID: 4467774
    Matched MeSH terms: Nematoda/anatomy & histology; Nematoda/classification*
  4. [On three Trichostrongylides Nematodes parasites of the Tupaiidae]
    Durette-Desset MC, Chabaud AG
    Ann Parasitol Hum Comp, 1975 Mar-Apr;50(2):173-85.
    PMID: 1163943
    Matched MeSH terms: Nematoda/classification
  5. [Biological cycle of Tarsubulura perarmata (Ratzel, 1868) (author's transl)]
    Quentin JC, Krishnasamy M, Tcheprakoff R
    Ann Parasitol Hum Comp, 1977 3 1;52(2):159-70.
    PMID: 907289
    Tarsubulura perarmata (Ratzel, 1868) is described from a primate Tarsius bancanus and from Tupaidae: Tupaia glis and T. minor in Malaysia (Kuala Lumpur). Its biological cycle is done by the experimental infestation of crickets belonging to the genera Valanga and Oxya. The infective larvae are obtained after three weeks of development of 28 degrees C in the intermediate host. They differ from third stage larvae obtained from Subulurinae by the development of cuticular pharyngeal lobes. The early apparition of this ontogenetic character confirms the isolation of the genus Tarsubulura as compared to the general evolution of the Subuluridae.
    Matched MeSH terms: Nematoda/anatomy & histology; Nematoda/growth & development*
  6. Zeylanema spinosa sp. nov. (Camallanidae) from a Malayan freshwater fish
    Furtado JI
    Ann Parasitol Hum Comp, 1965 11 1;40(6):677-80.
    PMID: 5864220
    Matched MeSH terms: Nematoda/anatomy & histology*; Nematoda/classification*
  7. [On the morphology of the Rictularid, Pterygodermatites nycticebi (Mönnig, 1920) (Nematoda, Riculariidae) of the slow Loris (author's transl)]
    Quentin JC, Krishnasamy M
    Ann Parasitol Hum Comp, 1979 Sep-Oct;54(5):527-32.
    PMID: 539728
    Description of the male Pterygodermatites nycticebi (Mönnig, 1920) unknown until the present study, and a study of the cephalic and cuticular structures of the female. This rictularid has a morphological evolution comparable to that of other males of the Rictulariidae parasitic in viverrid carnivores and in primates.
    Matched MeSH terms: Nematoda/anatomy & histology*
  8. Nematode parasites of Oceanica. VII. New records from wild and domestic chickens (Gallus gallus) from Palawan (Philippine Islands), Sabah (Malaysia), and Taiwan
    Schmidt GD, Kuntz RE
    Avian Dis, 1970 Feb;14(1):184-7.
    PMID: 5461569
    Matched MeSH terms: Nematoda*; Nematode Infections/veterinary*
  9. Fulltext Intraocular nematode with diffuse unilateral subacute neuroretinitis: case report
    Yusoff M, Alwi AA, Said MM, Zakariah S, Ghani ZA, Zunaina E
    BMC Ophthalmol, 2011;11:15.
    PMID: 21679403 DOI: 10.1186/1471-2415-11-15
    Live intraocular nematode is a rare occurrence. Nematode can migrate actively within the eye, creating visual symptoms and damaging ocular tissue.
    Matched MeSH terms: Nematoda/physiology
  10. Fulltext The Possible Biotechnological Use of Edible Mushroom Bioproducts for Controlling Plant and Animal Parasitic Nematodes
    Castañeda-Ramírez GS, Torres-Acosta JFJ, Sánchez JE, Mendoza-de-Gives P, González-Cortázar M, Zamilpa A, et al.
    Biomed Res Int, 2020;2020:6078917.
    PMID: 32685507 DOI: 10.1155/2020/6078917
    The present paper reviewed publications on the nematocidal activity of edible mushrooms (EM) and their potential use as sustainable tools for the control of parasitic nematodes affecting agriculture and livestock industry. Nematodes are organisms living in the soil and animals' guts where they may live as parasites severely affecting economically important crops and farm animals, thus causing economic losses to worldwide agriculture. Traditionally, parasitic nematodes have been controlled using commercial pesticides and anthelmintic (AH) drugs. Over the years, nematodes developed resistance to the AH drugs, reducing the usefulness of many commercial drugs. Also, the use of pesticides/anthelmintic drugs to control nematodes can have important negative impacts on the environment. Different EM have been not only used as food but also studied as alternative methods for controlling several diseases including parasitic nematodes. The present paper reviewed publications from the last decades about the nematocidal activity of EM and assessed their potential use as sustainable tools for the control of nematodes affecting agriculture and livestock industry. A reduced number of reports on the effect of EM against nematodes were found, and an even smaller number of reports regarding the potential AH activity of chemical compounds isolated from EM products were found. However, those studies have produced promising results that certainly deserve further investigation. It is concluded that EM, their fractions and extracts, and some compounds contained in them may have biotechnological application for the control of animal and plant parasitic nematodes.
    Matched MeSH terms: Nematoda/growth & development*
  11. New records of nematodes in the house crow (Corvus splendens Vieillot) in Asia
    Wong PL, Poon SK, Anderson RC
    Can. J. Zool., 1980 Jun;58(6):1212-3.
    PMID: 7427819
    Matched MeSH terms: Nematoda/classification*
  12. Fulltext Diffuse unilateral subacute neuroretinitis in a young boy: a case report
    Guan-Fook N, Hayati AA, Raja-Azmi MN, Liza-Sharmini AT, Wan-Hazabbah WH, Zunaina E
    Clin Ophthalmol, 2012;6:487-90.
    PMID: 22536041 DOI: 10.2147/OPTH.S29806
    We report a case of diffuse unilateral subacute neuroretinitis in a young boy with no clinical visualization of nematode. The diagnosis was made based on clinical findings and detection of Toxocara immunoglobulin G by Western blot test. An 11-year-old Malay boy presented with progressive blurring of vision in the left eye for a duration of 1 year. It was associated with intermittent floaters. Visual acuity in the left eye was 6/45 and improved to 6/24 with pinhole. There was positive relative afferent pupillary defect, impaired color vision, and presence of red desaturation in the left eye. There were occasional cells in the anterior chamber with no conjunctiva injection. Posterior segment examination revealed mild-to-moderate vitritis and generalized pigmentary changes of the retina with attenuated vessels. The optic disk was slightly hyperemic with mild edema. There was presence of multiple, focal, gray-white subretinal lesions at the inferior part of the retina. Full blood picture results showed eosinophilia with detection of Toxocara immunoglobulin G by Western blot test. Investigations for other infective causes and connective tissue diseases were negative. The diagnosis of diffuse unilateral subacute neuroretinitis secondary to Toxocara was made based on clinical findings and laboratory results. He was treated with oral albendazole 400 mg daily for 5 days and oral prednisolone 1 mg/kg with tapering doses over 6 weeks. At 1 month follow-up, the inflammation had reduced, and multiple, focal, gray-white subretinal lesions were resolved; however there was no improvement of vision.
    Matched MeSH terms: Nematoda
  13. Some nematodes and acanthocephalans from exotic ornamental freshwater fishes imported into Germany
    Moravec F, Wolter J, Körting W
    Folia Parasitol., 1999;46(4):296-310.
    PMID: 10730202
    Five species of adult nematodes, unidentifiable nematode larvae, and three species of acanthocephalans, were found in freshwater ornamental fishes newly imported into Germany from Brazil, Colombia, Indonesia, Malaysia, Nigeria, Peru, Sri Lanka and Thailand. The following species were identified: Adult Nematoda: Pseudocapillaria tomentosa, Capillariidae gen. sp., Dichelyne hartwichi sp. n., Procamallanus (Spirocamallanus) pintoi and Spinitectus allaeri; Acanthocephala: Pseudogorgorhynchus arii gen. et sp. n., Neoechinorhynchus sp. and Pallisentis sp. The nematode Dichelyne hartwichi sp. n. (male only) from the intestine of Chelonodon fluviatilis (Hamilton) from Thailand is characterised mainly by the presence of minute cuticular spines on the tail tip, length of spicules (510 microns) and arrangement of caudal papillae. The acanthocephalan Pseudogorgorhynchus arii sp. n. from the intestine of Ariopsis seemanni (Günther) from Colombia represents a new genus Pseudogorgorhynchus gen. n., differing from other genera of the Rhadinorhynchidae mainly in possessing a small proboscis armed with markedly few (18) hooks arranged in six spiral rows. Spinitectus macheirus Boomker et Puylaert, 1994 and Spinitectus moraveci Boomker et Puylaert, 1994 are considered junior synonyms of Spinitectus allaeri Campana-Rouget, 1961.
    Matched MeSH terms: Nematoda/anatomy & histology; Nematoda/classification*; Nematoda/isolation & purification
  14. Paraphilometroides nemipteri gen. et sp. n. (Nematoda: Philometridae) from the marine fish Nemipterus peronii (Valenciennes) from Malaysia
    Moravec F, Shaharom-Harrison F
    Folia Parasitol., 1989;36(4):345-50.
    PMID: 2488050
    A new nematode species, Paraphilometroides nemipteri sp. n. is described from the female specimens collected from the dorsal fin and operculum of the marine perciforme fish, Nemipterus peronii off Kuala Terengganu coastal waters in Malaysia. It considerably differs from all other species in Philometridae in the structure of the head end (presence of wide dorsal and ventral cephalic cuticular alae supported by special inner transverse muscular formations) and, therefore, a new genus Paraphilometroides gen. n. has been erected to accommodate it. Additional characteristic features of P. nemipteri are the presence of cuticular bosses on the body, eight cephalic papillae in the outer circle and four small papillae in the inner circle, and the absence of caudal protrusions.
    Matched MeSH terms: Nematoda/anatomy & histology; Nematoda/classification*
  15. Fulltext Dystrophin gene expression and intracellular calcium changes in the giant freshwater prawn, Macrobrachium rosenbergii, in response to white spot symptom disease infection
    Noor AF, Soo TCC, Ghani FM, Goh ZH, Khoo LT, Bhassu S
    Heliyon, 2017 Dec;3(12):e00446.
    PMID: 29322096 DOI: 10.1016/j.heliyon.2017.e00446
    Background: Dystrophin, an essential protein functional in the maintenance of muscle structural integrity is known to be responsible for muscle deterioration during white spot syndrome virus (WSSV) infection among prawn species. Previous studies have shown the upregulation of dystrophin protein in Macrobrachium rosenbergii (the giant freshwater prawn) upon white spot syndrome virus (WSSV) infection. The literature has also suggested the important role of calcium ion alterations in causing such muscle diseases. Thus, the interest of this study lies within the linkage between dystrophin functioning, intracellular calcium and white spot syndrome virus (WSSV) infection condition.

    Methods: In this study, the dystrophin gene from M. rosenbergii (MrDys) was first characterised followed by the characterization of dystrophin gene from a closely related shrimp species, Penaeus monodon (PmDys). Dystrophin sequences from different phyla were then used for evolutionary comparison through BLAST analysis, conserved domain analysis and phylogenetic analysis. The changes in mRNA expression levels of dystrophin and the alteration of intracellular calcium concentrations in WSSV infected muscle cells were then studied.

    Results: A 1246 base pair long dystrophin sequence was identified in the giant freshwater prawn, Macrobrachium rosenbergii (MrDys) followed by 1082 base pair long dystrophin sequence in P. monodon (PmDys). Four conserved domains were identified from the thirteen dystrophin sequences compared which were classified into 5 different phyla. From the phylogenetic analysis, aside from PmDys, the characterised MrDys was shown to be most similar to the invertebrate phylum of Nematoda. In addition, an initial down-regulation of dystrophin gene expression followed by eventual up-regulation, together with an increase in intracellular calcium concentration [Ca2+]
    i
    were shown upon WSSV experimental infection.

    Discussion: Both the functionality of the dystrophin protein and the intracellular calcium concentration were affected by WSSV infection which resulted in progressive muscle degeneration. An increased understanding of the role of dystrophin-calcium in MrDys and the interactions between these two components is necessary to prevent or reduce occurrences of muscle degeneration caused by WSSV infection, thereby reducing economic losses in the prawn farming industry from such disease.

    Matched MeSH terms: Nematoda
  16. Biological control of nematode parasites in sheep
    Larsen M
    J Anim Sci, 2006 Apr;84 Suppl:E133-9.
    PMID: 16582084
    In a world in which sheep producers are facing increasing problems due to the rapid spread of anthelmintic resistance, the battle against gastrointestinal parasitic nematodes is a difficult one. One of the potential new tools for integrated control strategies is biological control by means of the nematode-destroying microfungus Duddingtonia flagrans. This fungus forms sticky traps that catch developing larval stages of parasitic nematodes in the fecal environment. When resting spores (chlamydospores) of this fungus are fed daily to grazing animals for a period of time, the pasture infectivity and thus, the worm burden of grazing animals are lowered, especially in young lambs. Research has been conducted throughout the world covering many different climates and management systems. An Australian parasite model showed that if the fungus performs efficiently (> or =90% reduction in worm burden) for 2 or 3 mo, it should contribute significantly to a reduction in the number of dead lambs otherwise occurring when managed only by anthelmintic treatment and grazing management. Feeding or field trials have clearly demonstrated that dosing with a few hundred thousand spores per kilogram of live BW not only reduced the number of infective larvae but also increased the BW of the lambs compared with controls not given fungus. Initial Australian work with feeding spores by means of a block formulation or a slow-release device has shown some promise, but further work is needed to fully develop these delivery systems. In tropical Malaysia, small paddock trials and field studies resulted in significant improvements, in terms of lower worm burdens and increased live BW, when feeding half a million spores daily to grazing lambs. Additional benefits have been observed when the fungus is employed in combination with a fast rotational grazing system. Research has also demonstrated that spores can be delivered in slightly moist feed block material, but only if such blocks are consumed rapidly, because of their very short shelf life. In the northern, temperate Danish climate it has been demonstrated that daily feeding of half a million spores per kilogram of live BW can lead to significant production benefits, with increased live BW gain in fungus-exposed animals. Biological control of parasitic nematodes in sheep seems to hold promise for the future, but to be able to assist producers, the optimal delivery system needs to be refined and further developed. In addition, more work will be needed to define the best use of this technology in different geographic regions.
    Matched MeSH terms: Nematoda/microbiology*
  17. Current knowledge of metabolomic approach in infectious fish disease studies
    Low CF, Rozaini MZH, Musa N, Syarul Nataqain B
    J Fish Dis, 2017 Oct;40(10):1267-1277.
    PMID: 28252175 DOI: 10.1111/jfd.12610
    The approaches of transcriptomic and proteomic have been widely used to study host-pathogen interactions in fish diseases, and this is comparable to the recently emerging application of metabolomic in elucidating disease-resistant mechanisms in fish that gives new insight into potential therapeutic strategies to improve fish health. Metabolomic is defined as the large-scale study of all metabolites within an organism and represents the frontline in the 'omics' approaches, providing direct information on the metabolic responses and perturbations in metabolic pathways. In this review, the current research in infectious fish diseases using metabolomic approach will be summarized. The metabolomic approach in economically important fish infected with viruses, bacteria and nematodes will also be discussed. The potential of the metabolomic approach for management of these infectious diseases as well as the challenges and the limitations of metabolomic in fish disease studies will be explored. Current review highlights the impacts of metabolomic studies in infectious fish diseases, which proposed the potential of new therapeutic strategies to enhance disease resistance in fish.
    Matched MeSH terms: Nematoda/physiology
  18. Sodium dodecyl sulphate as a rapid clearing agent for studying the hard parts of monogeneans and nematodes
    Wong WL, Tan WB, Lim LH
    J Helminthol, 2006 Mar;80(1):87-90.
    PMID: 16469180
    Hard structures of helminths have often been used for taxonomic identification but are usually not clearly defined when treated with conventional methods such as ammonium picrate-glycerin for monogeneans and glycerin for nematodes. The present study reports a rapid and simple technique to better resolve the hard parts of selected monogeneans and nematodes using 5-10% alkaline sodium dodecyl sulphate (SDS). In comparison with established methods, SDS-treated worms become more transparent. In monogeneans treated with SDS, clear details of the hooks, hook filaments, anchors, bars and the sclerotized copulatory organs could be observed. In SDS-treated nematodes, spicules and ornamentations of the buccal capsules could be clearly seen.
    Matched MeSH terms: Nematoda/anatomy & histology*
  19. Studies on the nematode parasites of Malaysian rodents. I. The Rhabdiasidea, Trichuridea and Oxyuridea
    Ow-Yang CK
    J Helminthol, 1971;45(2):93-109.
    PMID: 5123705
    Matched MeSH terms: Nematoda/classification*
  20. A new bursate nematode Hepatojarakus malayae gen. et sp. nov. from the liver of Rattus rattus jarak (Bonhote) on Pulau Jarak, Straits of Malacca
    Yeh LS
    J Helminthol, 1955;29(1-2):44-8.
    PMID: 13263558 DOI: 10.1017/S0022149X00024214
    A collection of parasitic worms was made from Rattus rattus jarak (Bonhote) from Pulau Jarak, “which lies in the middle of the Malacca Straits between Penang and Port Swettenham and some 85 miles from the Sembilan Islands opposite the Dindings.” (Audy, 1950). It was collected by Dr. J. R. Audy, Senior Research Officer of the Division of Virus Research and Medical Zoology, Institute for Medical Research, Kuala Lumpur while investigating scrub-typhus on the island.
    Matched MeSH terms: Nematoda*
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