MyMedR

Studies on the Malayan forest rat filaria, Breinlia booliati: periodicity and microfilaraemic patterns during the course of infection

Yap EH, Ho BC, Singh M, Kang KL, Lim BL

J Helminthol, 1975 Dec;49(4):263-9.

PMID: 1206216

Breinlia booliati exhibited nocturnal subperiodicity in its natural host, Rattus sabanus in contrast to experimentally infected laboratory-reared albine rats which showed irregular fluctuations of microfilariae throughout the 24 hour cycle. All the infected albino rats showed a prepatent period between 11-14 weeks postinoculation. Three patterns of microfilaraemia were discerned during the course of infection 38/49 rats displayed a single peak, 4/49 displayed 2 peaks about 12-15 weeks apart and 7/49 showed a sustained high plateau-like pattern of microfilaraemia. Cortisone had no effect on microfilarial levels when administered to rats near postpatency and some at postpatency.

Matched MeSH terms: Filariasis/veterinary*

Fulltext Infective larvae of Cercopithifilaria spp. (Nematoda: Onchocercidae) from hard ticks (Ixodidae) recovered from the Japanese serow (Bovidae)

Uni S, Bain O, Fujita H, Matsubayashi M, Fukuda M, Takaoka H

Parasite, 2013;20:1.

PMID: 23340227 DOI: 10.1051/parasite/2012001

Hard ticks taken from the Japanese serow, Capricornis crispus, in Yamagata Prefecture, Honshu, harboured infective larvae of onchocercid filariae after incubation from the 22nd to the 158th day. Haemaphysalis flava and H. japonica contained one to eight filarial larvae; females, males and a nymph of the ticks were infected. The 44 infective larvae recovered were 612-1,370 μm long, and 11 of them, 930-1,340 μm long, were studied in detail. The larvae possessed the morphologic characteristics of the larvae of the genus Cercopithifilaria, namely an oesophagus with a posterior glandular part, no buccal capsule and a long tail with three terminal lappets. Five types (A to E) of infective larvae were identified based on the morphologic characteristics. While to date five species of Cercopithifilaria have been described from the Japanese serow, a specific identification of the larvae found in this study was generally not possible. Only type E larvae could be tentatively assigned to Cercopithifilaria tumidicervicata, as they had a cervical swelling similar to that of the adults of this species. A key for the identification of the five larval types is presented. The study presents circumstantial evidences indicating that H. flava and H. japonica may transmit Cercopithifilaria spp. to Japanese serows. It also suggests the possibility that such filarial larvae will be found in hard ticks anywhere, because Cercopithifilaria is distributed worldwide, though this genus generally goes unnoticed, as its microfilariae occur in the skin, not in the blood, of host animals.

Matched MeSH terms: Filariasis/veterinary*

Fulltext Morphological and molecular characteristics of Malayfilaria sofiani Uni, Mat Udin & Takaoka n. g., n. sp. (Nematoda: Filarioidea) from the common treeshrew Tupaia glis Diard & Duvaucel (Mammalia: Scandentia) in Peninsular Malaysia

Uni S, Mat Udin AS, Agatsuma T, Saijuntha W, Junker K, Ramli R, et al.

Parasit Vectors, 2017 Apr 20;10(1):194.

PMID: 28427478 DOI: 10.1186/s13071-017-2105-9

BACKGROUND: The filarial nematodes Wuchereria bancrofti (Cobbold, 1877), Brugia malayi (Brug, 1927) and B. timori Partono, Purnomo, Dennis, Atmosoedjono, Oemijati & Cross, 1977 cause lymphatic diseases in humans in the tropics, while B. pahangi (Buckley & Edeson, 1956) infects carnivores and causes zoonotic diseases in humans in Malaysia. Wuchereria bancrofti, W. kalimantani Palmieri, Pulnomo, Dennis & Marwoto, 1980 and six out of ten Brugia spp. have been described from Australia, Southeast Asia, Sri Lanka and India. However, the origin and evolution of the species in the Wuchereria-Brugia clade remain unclear. While investigating the diversity of filarial parasites in Malaysia, we discovered an undescribed species in the common treeshrew Tupaia glis Diard & Duvaucel (Mammalia: Scandentia).

METHODS: We examined 81 common treeshrews from 14 areas in nine states and the Federal Territory of Peninsular Malaysia for filarial parasites. Once any filariae that were found had been isolated, we examined their morphological characteristics and determined the partial sequences of their mitochondrial cytochrome c oxidase subunit 1 (cox1) and 12S rRNA genes. Polymerase chain reaction (PCR) products of the internal transcribed spacer 1 (ITS1) region were then cloned into the pGEM-T vector, and the recombinant plasmids were used as templates for sequencing.

RESULTS: Malayfilaria sofiani Uni, Mat Udin & Takaoka, n. g., n. sp. is described based on the morphological characteristics of adults and microfilariae found in common treeshrews from Jeram Pasu, Kelantan, Malaysia. The Kimura 2-parameter distance between the cox1 gene sequences of the new species and W. bancrofti was 11.8%. Based on the three gene sequences, the new species forms a monophyletic clade with W. bancrofti and Brugia spp. The adult parasites were found in tissues surrounding the lymph nodes of the neck of common treeshrews.

CONCLUSIONS: The newly described species appears most closely related to Wuchereria spp. and Brugia spp., but differs from these in several morphological characteristics. Molecular analyses based on the cox1 and 12S rRNA genes and the ITS1 region indicated that this species differs from both W. bancrofti and Brugia spp. at the genus level. We thus propose a new genus, Malayfilaria, along with the new species M. sofiani.

Matched MeSH terms: Filariasis/veterinary*

Observations of Breinlia booliati in a new host, Rattus rattus jalorensis, from Kuantan, state of Pahang, Malaysia

Tucker MS, Price DL, Kwa BH, DeBaldo AC

J Parasitol, 2003 Dec;89(6):1220-6.

PMID: 14740913

Breinlia booliati Singh and Ho, 1973 is described from the Malaysian wood rat, Rattus rattus jalorensis Bonhote. The parasites presented here were originally discovered in 1955 in Kuantan, Malaysia, but were not classified until now. On the basis of morphological observations of anatomical structures and comparisons with other species of Breinlia, it was determined that the parasites were B. booliati. The parasites discussed here show slight deviation from B. booliati, but they do not warrant a new species classification. There is some variation in anatomical measurements, the number of male caudal papillae, and the morphology of the microfilariae. Breinlia booliati from a new host is described in this article, with a brief discussion on Rattus species that are hosts of B. booliati and vectors that transmit the parasite. The occurrence of B. booliati in R. r. jalorensis represents the first report of the parasite in this host.

Matched MeSH terms: Filariasis/veterinary*

A double infection of filariasis in a black panther (Panthera pardus) from Pahang

Strauss JM, Sivanandam S

Med J Malaya, 1966 Jun;20(4):336.

PMID: 4224351

Matched MeSH terms: Filariasis/veterinary*

Breinlia booliati sp. n. (Filaroidea: Onchocercidae), a filaria of the Malayan forest rat, Rattus sabanus (Thos.)

Singh M, Ho BC

J Helminthol, 1973;47(2):127-33.

PMID: 4724312

Matched MeSH terms: Filariasis/veterinary

Studies on Stephanofilaria kaeli in cattle

Ramachandran CP, Loke YW, Hagendrom C

Med J Malaya, 1966 Jun;20(4):344-7.

PMID: 4224357

Matched MeSH terms: Filariasis/veterinary*

Ecological distribution of blood parasites in some arboreal rodents

Muul I, Yap LF, Lim BL

Southeast Asian J. Trop. Med. Public Health, 1973 Sep;4(3):377-81.

PMID: 4203491

Matched MeSH terms: Filariasis/veterinary

A preliminary report on the life cycle of Stephanofilaria kaeli

Mullin SW

Southeast Asian J. Trop. Med. Public Health, 1971 Mar;2(1):84.

PMID: 5165245

Matched MeSH terms: Filariasis/veterinary

Tetrapetalonema dunni sp. n. (Nematoda: Filarioidea) from Malaysian tree shrews

Mullin SW, Orihel TC

J Parasitol, 1972 Dec;58(6):1047-51.

PMID: 4641870

Matched MeSH terms: Filariasis/veterinary

Dipetalonema digitatum (Chandler 1929) infection in the leaf monkey, Presbytis obscura (Reid)

Mak JW, Inder-Singh, Yen PK, Yap LF

Southeast Asian J. Trop. Med. Public Health, 1980 Mar;11(1):141.

PMID: 6773151

Matched MeSH terms: Filariasis/veterinary*

Zoonotic implications of cats and dogs in filarial transmission in Peninsular Malaysia

Mak JW, Yen PK, Lim KC, Ramiah N

Trop Geogr Med, 1980 Sep;32(3):259-64.

PMID: 7210162

Filarial infections in 447 cats and 68 dogs from six endemic areas of human filariasis in Peninsular Malaysia were studied as part of the study on the zoonotic transmission of subperiodic Brugia malayi infection. 20.6% of cats and 57.4% of dogs had filarial infections. Cats were infected with subperiodic B. malayi, B. pahangi, Dirofilaria repens and D. immitis. Dogs were infected with B. pahangi and D. immitis. 6.9% of the cats had subperiodic B. malayi infection. The zoonotic implications of these infections and their impact on the filariasis control programme in Peninsular Malaysia were discussed.

Matched MeSH terms: Filariasis/veterinary*

Histopathology of Stephanofilaria kaeli lesions in cattle

Loke YW, Ramachndran CP

Med J Malaya, 1966 Jun;20(4):348.

PMID: 4224358

Matched MeSH terms: Filariasis/veterinary*

Distribution and ecological consideration of Breinlia booliati infecting wild rodents in Malaysia

Liat LB, Wah MJ, Singh M, Ho BC, Hian YE

Southeast Asian J. Trop. Med. Public Health, 1975 Jun;6(2):241-6.

PMID: 1166352

Seven of the 18 species of lowland forest terrestrial and semi-arboreal murids were found naturally infected with Breinlia booliati. Of these, two species, Rattus sabanus and R. cremoriventer, were found to be the most preferred hosts. None of the murids from the highland, field or human-inhabited areas was infected. This could have been due more to the greater scarcity of the vectors in these habitats than to the susceptibility of the hosts. The absence of this parasite in the squirrels examined may be attributed either to host specificity or to the normal activity cycles or vertical stratification of the vectors, separating them in space and/or time from the squirrels. The pattern of dispersion of the parasite is influenced by the wide distribution of suitable hosts, and the hypothesis that the parasite is of forest origin is discussed.

Matched MeSH terms: Filariasis/veterinary*

Effect of Brugia pahangi co-infection with Plasmodium berghei ANKA in gerbils (Meriones unguiculatus)

Junaid OQ, Vythilingam I, Khaw LT, Sivanandam S, Mahmud R

Parasitol Res, 2020 Apr;119(4):1301-1315.

PMID: 32179986 DOI: 10.1007/s00436-020-06632-4

Malaria and lymphatic filariasis (LF) are two leading and common mosquito-borne parasitic diseases worldwide. These two diseases are co-endemic in many tropical and sub-tropical regions and are known to share vectors. The interactions between malaria and filarial parasites are poorly understood. Thus, this study aimed at establishing the interactions that occur between Brugia pahangi and Plasmodium berghei ANKA (PbA) co-infection in gerbils. Briefly, the gerbils were matched according to age, sex, and weight and grouped into filarial-only infection, PbA-only infection, co-infection, and control group. The parasitemia, survival and clinical assessment of the gerbils were monitored for a period of 30 days post Plasmodium infection. The immune responses of gerbils to both mono and co-infection were monitored. Findings show that co-infected gerbils have higher survival rate than PbA-infected gerbils. Food and water consumption were significantly reduced in both PbA-infected and co-infected gerbils, although loss of body weight, hypothermia, and anemia were less severe in co-infected gerbils. Plasmodium-infected gerbils also suffered hypoglycemia, which was not observed in co-infected gerbils. Furthermore, gerbil cytokine responses to co-infection were significantly higher than PbA-only-infected gerbils, which is being suggested as a factor for their increased longevity. Co-infected gerbils had significantly elicited interleukin-4, interferon-gamma, and tumor necrotic factor at early stage of infection than PbA-infected gerbils. Findings from this study suggest that B. pahangi infection protect against severe anemia and hypoglycemia, which are manifestations of PbA infection.

Matched MeSH terms: Filariasis/veterinary*

New hosts of Breinlia booliati in wild rats from Sarawak with further observations on its morphology

Joon-Wah M, Boo-Liat L

Southeast Asian J. Trop. Med. Public Health, 1974 Mar;5(1):22-8.

PMID: 4839077

Matched MeSH terms: Filariasis/veterinary*

Tetrapetalonema (Sandnema) digitata (Chandler, 1929) Chabaud & Bain, 1976, infection in the banded leaf monkey, Presbytis melalophos (Raffles) in Peninsular Malaysia

Inder-Singh Krishnasamy M, Mak JW

Southeast Asian J. Trop. Med. Public Health, 1985 Sep;16(3):512.

PMID: 4095616

Matched MeSH terms: Filariasis/veterinary*

Observations on the development of a new filaria (Breinlia booliati, Singh and Ho, 1973) of a rat Rattus sabanus in the mosquito Aedes togoi

Ho BC, Singh M, Lim BL

J Helminthol, 1973;47(2):135-40.

PMID: 4724313

Matched MeSH terms: Filariasis/veterinary

Study of types of some species of "Filaria" (Nematoda) parasites of small mammals described by Von Linstow and Molin

Guerrero R, Bain O

Parasite, 2011 May;18(2):151-61.

PMID: 21678791

Parasitic nematodes from the Berlin (ZMB) and Vienna (NMW) Museum collections referred to the genus Filaria Mueller, 1787 by von Linstow or Molin were studied. Three samples were in good condition and the specimens redescribed. Litomosa hepatica (von Linstow, 1897) n. comb., sample ZMB Vermes Entozoa 3368, from the megachiropteran Pteropus neohibernicus, Bismarck Archipelago, resembles L. maki Tibayrenc, Bain & Ramanchandran, 1979, from Pteropus vampyrus, in Malaysia, but the buccal capsule differs. Both species display particular morphological characters which differ from species of Litomosa parasitic in microchiropterans. The remaining material originates from Brazil. The spicule morphology of Litomosoides circularis (von Linstow, 1899) Chandler, 1931, sample ZMB Vermes Entozoa 1059 from Hesperomys spec. (= Holochilus brasiliensis), Porto Alegre, confirms that it belongs to the sigmodontis group; the microfilaria presents characters of the genus Litomosoides, e.g. body attenuated at both extremities and salient cephalic hook. Taxonomic discussions by others confirm that species of Litomosoides belonging to the sigmodontis group and described subsequently are distinct from L. circularis. Litomosoides serpicula (Molin, 1858) Guerrero, Martin, Gardner & Bain, 2002, is redescribed, sample NMW 6323 from the bat Phyllostoma spiculatum (= Sturnira lilium), Ypanema. It is very close to L. brasiliensis Almeida, 1936, type host Moytis sp., but distinguished by a single ring in the buccal capsule, rather than two, supporting previous conclusions that the taxon L. brasiliensis, as generally regarded, may represent a complex of species. Samples NMW 6322 and NMW 6324, from other bats and also identified by Molin (1858) as Filaria serpicula, contain unidentifiable fragments of Litomosoides incertae sedis. Filaria hyalina von Linstow, 1890, sample ZMB Vermes Entozoa Q 3905 from Sorer vulgaris (= Sorex araneus), is incertae sedis because it contains two unidentifiable posterior parts of male, which might be an acuarid, Stammerinema sp. Filaria vesperuginis von Linstow, 1885, sample ZMB Vermes Entozoa Q 3929, from the bat Vesperugo serotinus (= Eptesicus serotinus), contains encysted nematode larvae and is a nomen dubium.

Matched MeSH terms: Filariasis/veterinary*

Protozoan and helminth parasites of small wild mammals in a new Felda settlement Jenderak Utara, Central Pahang, Peninsular Malaysia

Fong YL, Liat LB, de Witt GF, Krishnasamy M, Sivanandam S, Foong PY

Southeast Asian J. Trop. Med. Public Health, 1977 Sep;8(3):345-53.

PMID: 415370

Matched MeSH terms: Filariasis/veterinary

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