MyMedR

Serological techniques in parasitology--some comments by a devil's advocate

Desowitz RS

Med J Malaya, 1966 Sep;21(1):35-40.

PMID: 4224875

Matched MeSH terms: Hemagglutination Tests*

Serological evidence of group B arbovirus infection in Sabah

Kan SK, Kay RW, Lim TW, Chew V

Med J Malaysia, 1978 Jun;32(4):289-91.

PMID: 732623

Matched MeSH terms: Hemagglutination Inhibition Tests

Studies on human filariasis in Malaysia: the application of an indirect hemagglutination technique for immunodiagnosis

Singh M, Mackinlay LM, Kane GJ, Mak JW, Yap EH, Ho BC, et al.

Am J Trop Med Hyg, 1980 Jul;29(4):548-52.

PMID: 6996501

The indirect hemagglutination (IHA) test done with turkey red cells was applied to 173 serum samples obtained from patients and persons exposed to Wuchereria bancrofti and Brugia malayi in endemic areas of Peninsular Malaysia. A crude extract of adult worms of the rat filaria, Breinlia booliati, was used as the antigen. When a titer of 1:16 was taken as negative, positive IHA test rates in sera from microfilaria-negative persons in endemic areas, microfilaremic cases, and patients with clinical filariasis were 13%, 75%, and 80%, respectively. Results of the IHA test correlated well with results obtained with the indirect fluorescent technique.

Matched MeSH terms: Hemagglutination Tests/methods*

Fulltext Seroprevalence of anti-amoebic antibody among blood donors by indirect hemeagglutination assay

Zeehaida M, Zairi NZ, Tan ZN, Wong WK, Lim BH

Trop Biomed, 2009 Dec;26(3):366-8.

PMID: 20237453

The screening for anti-amoebic antibody among a group of donors was to obtain negative control serum samples for an on-going antigen development assay in diagnosis of amoebic liver abscess. Out of 200 samples, 125 (62.5%) were negative, whereas 44 (21.5%) had IHA titer of less than 1:128 and 31 (16.0%) of the samples had significant IHA titers of 1:128 or more, in which 2 serum samples gave titers of 1:4096.

Matched MeSH terms: Hemagglutination Tests*

Haemagglutination tests in malaria and toxoplasma: observations on sedimentation patterns

Saave JJ

Med J Malaya, 1966 Jun;20(4):324.

PMID: 4224344

Matched MeSH terms: Hemagglutination Tests

Influenza HI antibodies in dengue-positive and negative sera of febrile patients

Tan DS, Omar M, Chew V

Med J Malaysia, 1979 Jun;33(4):355-6.

PMID: 522749

Matched MeSH terms: Hemagglutination Inhibition Tests

Vaccination of chickens against Newcastle disease with a food pellet vaccine

Ideris A, Ibrahim AL, Spradbrow PB

Avian Pathol, 1990 Apr;19(2):371-84.

PMID: 18679945

The Australian, heat-resistant, a virulent V4 strain of Newcastle disease (ND) virus was selected for further heat resistance to give a variant designated V4-UPM. V4-UPM was sprayed on to food pellets which were fed to chickens in amounts calculated to give about 10(6) EID50 per chicken. Chickens vaccinated only once by feeding developed no haemagglutination-inhibition (HI) antibodies and were not protected against challenge with a viscerotropic velogenic strain of ND virus. Chickens given food pellet vaccine at 3 and 6 weeks of age developed HI antibodies and were substantially protected against parenteral and contact challenge with virulent ND virus. Similar protection was achieved when the V4-UPM vaccine was given intranasally on two occasions or when the vaccine virus was allowed to spread by contact from intranasally vaccinated chickens to nonvaccinated chickens. Heat resistant ND vaccine incorporated in food pellets may provide a method for protecting village chickens against ND in tropical countries.

Matched MeSH terms: Hemagglutination Inhibition Tests

Fulltext Malaysia’s success in eliminating mother-to-child transmission of HIV and syphilis

Mohd Nasir Abd Aziz

Malaysian Journal of Medicine and Health Sciences, 2019;15(104):24-24.

MyJurnal

Introduction: HIV and syphilis testing has been part of Malaysia’s comprehensive maternal & child health pro-gramme for more than 2 decades. Part of this antenatal package include lifelong antiretroviral (ARV) treatment to HIV+ pregnant women, free antiretroviral therapy (ART) prophylaxis/ infant formula for all HIV-exposed infants and appropriate management for syphilis positive antenatal mothers. The objective of this paper is to present the analysis of Malaysia’s achievement in obtaining the elimination of mother-to-child transmission of HIV (eMTCT) and syphilis status from the World Health Organisation (WHO). Methods: This survey is based on our surveillance and analysis of data on HIV and syphilis testing on pregnant women over a three-year period, beginning from 2015. Results: Malaysia’s national health survey revealed 97.4% of pregnant women in Malaysia had a minimum of four antenatal visits. The MOH’s surveillance system also showed 95.1% and 95.8% of pregnant women received HIV/ syphilis screening in 2015 and 2016 respectively, whilst the HIV vertical transmission rate declined from 16.12% in 2000 to 2.46% and 1.99% in 2015 and 2016 respectively. Congenital syphilis rates declined from 6.0 / 100,000 live births in 2012 to 5.0 and 4.0/ 100,000 live births in 2015 and 2016 respectively. In addition, more than 95% of antenatal mothers living with HIV received ARV and almost 100% of TPHA positive (Treponema pallidum haemagglutination) of expectant mothers received appropriate treatment. Conclusion: Based on such impressive findings, Malaysia was recognised by WHO in May 2018 as the first country in the Western Pacific Region to have successfully “eliminated” a significant public health problem.

Matched MeSH terms: Hemagglutination; Hemagglutination Tests

Toxoplasma gondii infection in native village chickens (Gallus domesticus) in Selangor and Melaka, Malaysia

Sabri AR, Hassan L, Sharma RSK, Noordin MM

Trop Biomed, 2019 Sep 01;36(3):604-609.

PMID: 33597482

Toxoplasmosis is a worldwide zoonosis caused by the protozoa Toxoplasma gondii which affects human and animals. Village chickens (Gallus domesticus) most commonly known as Ayam Kampung or free-range chickens, have been suggested to play a role in the epidemiology of toxoplasmosis. This study determines the presence of T. gondii in the village chicken populations in two states of Malaysia. A total of 50 serum samples from the chickens from Selangor (n=20) and Melaka (n=30) were collected and analysed using commercial serological kits. T. gondii antigen was detected in 20% (Selangor 30%; Melaka 13%) samples using ELISA test and anti-T. gondii antibody was detected in all positive ELISA samples using the indirect haemagglutination test (IHAT). Histopathological examination revealed tissue changes such as inflammation and degeneration in brain and liver of seropositive chickens. This is the first report of T. gondii infection in the village chickens in Malaysia.

Matched MeSH terms: Hemagglutination Tests/veterinary

IDIOPATHIC AUTO-IMMUNE HAEMOLYTIC ANAEMIA IN MALAYA

LIE-INJOLUAN EN, PILLAY RP

Acta Haematol., 1964 May;31:282-8.

PMID: 14172696

Matched MeSH terms: Hemagglutination*

Newcastle disease vaccination in Malaysia: application of oil emulsion vaccine

Ernawati R, Ibrahim AL

Vet Rec, 1984 Oct 06;115(14):352-4.

PMID: 6495601

An experimental oil emulsion Newcastle disease vaccine was evaluated for its efficacy in broiler chickens. A group of chickens vaccinated at one day old with a live lentogenic Newcastle disease vaccine and subsequently revaccinated at three and eight weeks old with the experimental oil emulsion vaccine showed satisfactory haemagglutination inhibition antibody response which persisted for 18 weeks. Between 90 and 100 per cent of the vaccinated chickens were protected when challenged with the velogenic viscerotropic Newcastle disease virus. Although the vaccinated chickens were protected against clinical disease, virus could be isolated from a number of birds. By day 10 to 12 after challenge all the chickens were free from Newcastle disease infection.

Matched MeSH terms: Hemagglutination Inhibition Tests/veterinary

A dot enzyme immunoassay for dengue 3 virus: comparison with the haemagglutination inhibition test

Cardosa MJ, Noor Sham S, Tio PH, Lim SS

Southeast Asian J. Trop. Med. Public Health, 1988 Dec;19(4):591-4.

PMID: 3238470

A dot enzyme immunoassay (DEIA) was used to determine the levels of antibody to dengue 3 virus in the acute and convalescent sera of febrile patients with a clinical diagnosis of dengue fever or dengue haemorrhagic fever. The antibody titres were compared with titres determined by the haemagglutination inhibition (HI) test. The results of the study showed that, besides being more simple to perform, the DEIA is in order of magnitude more sensitive than the HI test. Furthermore, the data suggest that it is possible to use a single dilution as a cutoff point to predict with reasonable accuracy, if a patient has had a recent dengue infection. The DEIA test for antibodies to dengue virus is an appropriate technology highly suitable for rapid diagnosis and surveillance in developing countries.

Matched MeSH terms: Hemagglutination Inhibition Tests

Enzyme immunoassay for simultaneous measurement of autoantibodies against thyroglobulin and thyroid microsome in serum

Ng ML, Rajna A, Khalid BA

Clin Chem, 1987 Dec;33(12):2286-8.

PMID: 3690847

A combined enzyme immunoassay (micro-ELISA) technique was established for measuring autoantibodies against thyroglobulin and thyroid microsome, involving the immuno-dot blot technique. Thyroglobulin and thyroid microsome antigens (1 g/L each) prepared from normal thyroids were spotted separately onto nitrocellulose membrane filter discs. Results by this method and those by immunofluorescence correlated well. The percentages of confirmed positives were 30% and 48% and the negatives were 58% and 46% (n = 50) for thyroglobulin and microsome, respectively. Testing these samples by gelatin agglutination gave a high percentage of false positives (up to 20%, n = 128) and hemagglutination testing yielded a high percentage of false negatives (up to 20%, n = 45). The titer of autoantibodies by the micro-ELISA technique was greater than by agglutination. This technique is highly specific and sensitive.

Matched MeSH terms: Hemagglutination Tests

Immunotyping of different strains of Japanese encephalitis virus by antibody-absorption, haemagglutination-inhibition and complement-fixation tests

Okuno T, Okada T, Kondo A, Suzuki M, Kobayashi M, Oya A

Bull World Health Organ, 1968;38(4):547-63.

PMID: 5302450

The immunological characteristics of 26 strains of Japanese encephalitis virus (JEV) isolated in Japan and Malaya between 1935 and 1966 have been investigated mainly by the antibody-absorption variant of the haemagglutination-inhibition test, and to a certain extent also by conventional haemagglutination-inhibition and complement-fixation tests. The antibody-absorption technique shows promise as a routine method for the immunotyping of JEV.At present, two immunotypes can be distinguished. One comprises 2 strains, Nakayama-NIH and I-58, and is designated as the I-58 immunotype. The other immunotype, JaGAr 01, comprises 17 strains which share the characteristics of the JaGAr 01 strain, including one subline of the Nakayama strain, Nakayama-Yakken. The Nakayama-RFVL strain was found to have the characteristics of both immunotypes. The I-58 immunotype differs more markedly from related arboviruses, such as the Murray Valley encephalitis virus and the West Nile Eg101 strain, than does the JaGAr 01 immunotype.Evidence is presented which suggests that a given JEV strain can change immunotype on repeated passage through mice.

Matched MeSH terms: Hemagglutination Inhibition Tests

Fulltext The seroepidemiology of rubella in Kuala Lumpur, West Malaysia

Lam SK

Bull World Health Organ, 1972;47(1):127-9.

PMID: 4538899

Rubella antibody rates in the female population of Kuala Lumpur were lower than those reported from temperate countries, though similar to rates found in other tropical countries excepting Singapore. Among the major ethnic groups, the immunity status of the Chinese was higher than that of the Malay and Indian groups.

Matched MeSH terms: Hemagglutination Inhibition Tests

Melioidosis in Malaysia. 3. Antibodies to Pseudomonas pseudomallei in the human population

Strauss JM, Alexander AD, Rapmund G, Gan E, Dorsey AE

Am J Trop Med Hyg, 1969 Sep;18(5):703-7.

PMID: 5817889

Matched MeSH terms: Hemagglutination Tests

Fulltext The positive expression of genotype VII Newcastle disease virus (Malaysian isolate) in Japanese quails (Coturnix coturnix japonica)

Mazlan LF, Bachek NF, Mahamud SNA, Idris LH, Wei TS, Omar AR, et al.

Vet World, 2017 May;10(5):542-548.

PMID: 28620260 DOI: 10.14202/vetworld.2017.542-548

AIM: Genotype VII Newcastle disease virus (NDV) is the most predominant NDV strains that circulating in Malaysia; thus, this study was aimed to determine the susceptibility of Japanese quails toward genotype VII NDV. Clinical signs, gross pathological lesions of organs, positive detection of virus in organs and cloacal swabs, as well as the expression of the antibody titer, were used as parameters to assess the susceptibility of Japanese quails following infection of genotype VII NDV.

MATERIALS AND METHODS: About 20 quails were divided into three groups (n=8 for Groups A and B; n=4 for the control group). The quails in the Groups A and B were infected via intraocular route with 0.03 ml of 103.5 ELD50 and 107.0 ELD50 of NDV strain IBS 002, respectively, while the control group received 1× phosphate-buffered saline. Cloacal swabs and necropsy were taken on day 7 post-infection for all quails were subjected to one-step reverse transcription real-time quantitative polymerase chain reaction (RT-qPCR) for detection of virus and examination for gross pathological lesion, respectively. Blood serums of infected quails were taken on day 10, 14, and 21 post-day infections and were subjected for hemagglutination inhibition (HI) assay.

RESULTS: Depression and ruffled feathers, trachea rales, leg paralysis, and torticollis were shown in some of the quails in both infected groups. Based on statistical analysis, there was no significant difference (p>0.05) in clinical signs between the infected groups. The results for RT-qPCR were found to be negative for all groups, and no gross pathological lesions of organs observed for quails in both infected groups. Trachea, proventriculus, and cecal tonsil were taken for the detection of NDV by RT-qPCR, and some of the organ samples showed positive detection of virus in both infected groups. HI assay showed an increase in mean titers of antibody across time and between infected groups.

CONCLUSION: In summary, Japanese quails are susceptible to genotype VII NDV based on parameters assessed.

Matched MeSH terms: Hemagglutination

Development of a dot enzyme immunoassay for dengue 3: a sensitive method for the detection of antidengue antibodies

Cardosa MJ, Hooi TP, Shaari NS

J Virol Methods, 1988 Oct;22(1):81-8.

PMID: 3058737

Partially purified DEN3 virus was used as antigen in a sensitive dot enzyme immunoassay (DEIA) for the detection of antibodies to flavivirus antigens. We describe here the method used to prepare and optimise the antigen-bearing nitrocellulose membranes and present the results obtained from screening 20 acute phase sera from patients shown to have had recent dengue infections by the haemagglutination inhibition (HI) test. Sixteen pairs of acute and convalescent sera from dengue-negative patients had no detectable antibody to dengue virus by HI. These were shown to have no antibody detectable by DEIA. Sera positive for dengue antibodies by HI had DEIA titers ranging from 10 to several thousand times greater than the titers detected by HI.

Matched MeSH terms: Hemagglutination Inhibition Tests

Fulltext Indirect hemagglutination antibodies against Burkholderia pseudomallei in normal blood donors and suspected cases of melioidosis in Malaysia

Norazah A, Rohani MY, Chang PT, Kamel AG

Southeast Asian J. Trop. Med. Public Health, 1996 Jun;27(2):263-6.

PMID: 9279987

Interpretation of the indirect hemagglutination test (IHA) for melioidosis in endemic areas is difficult because of the presence of antibodies in apparently healthy individuals. Fifty-three out of 200 healthy blood donors in Malaysia showed positive antibody titers (> or = 1 : 40) against Burkholderia pseudomallei. Seven percent had an IHA titer of 1 : 40, 11% had an IHA titer of 1 : 80 while 8.5% had a titer > or = 1 : 160. Out of 258 sera sent for melioidosis serology, 7% of the patients had an IHA titer of 1 : 40, 9% had an IHA titer of 1 : 80 while 20% had an IHA titer of > or = 1 : 160. If a titer of > or = 1 : 80 is taken as cut off point for positivity, 29% of the patients had positive melioidosis serology. Increasing the positivity threshold may jeopardize the sensitivity of the test. A more specific and sensitive test is needed.

Matched MeSH terms: Hemagglutination Tests/methods*

Relationship between active protection in vaccinated buffaloes against haemorrhagic septicaemia and passive mouse protection test or serum antibody titres

Chandrasekaran S, Kennett L, Yeap PC, Muniandy N, Rani B, Mukkur TK

Vet Microbiol, 1994 Aug 15;41(4):303-9.

PMID: 7801530

The relationship between the standard passive mouse protection test or serum antibody titres measured by indirect haemagglutination or enzyme-linked immunosorbent assays and active protection in buffaloes immunized with different types of haemorrhagic septicaemia bacterins was investigated. Groups of 2-3 buffaloes were immunized with the bacterins currently in use in Asia, viz., broth bacterin (BB), alum precipitated vaccine (APV) and oil adjuvant vaccine (OAV) either subcutaneously (BB, APV) or intramuscularly (OAV) and challenged subcutaneously with virulent organisms at different periods post-immunization. Although the passive mouse protection and indirect haemagglutination tests carried out with the pre-challenge sera from vaccinated buffaloes revealed no relationship with active protection in buffaloes, a relationship was observed between the ELISA antibody titres and protection. In contrast, a dose-response relationship was observed between the homologous active and passive mouse protection test.

Matched MeSH terms: Hemagglutination Tests/veterinary

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