Introduction: Cervical cancer remains the second commonest female malignancy worldwide and the seventh among Malaysians. Globally in 2012, an estimated 528 000 women developed cervical cancer and almost 266 000 died from this disease. Of all cervical cancers, 83% occur in the less developed world due to the absence of screening. To promote the community health awareness of cervical cancer which is preventable. Methods: By internet literature searching (Google Scholar) and textbooks. Results: The primary cause of cervical pre-cancer and cancer is persistent infection with one or more of the oncogenic types of HPV, the most common infection acquired during sexual inter-course, usually early in sexual life. Cervical cancer due to HPV can be prevented by HPV vaccination, participation in a screening program, avoidance of smoking, limitation of sex partners and use of a condom. Three HPV vaccines are available worldwide such as bivalent HPV 16/18 vaccine, quadrivalent HPV 16/18/6/11 L1 virus-like particles vaccine and 9-valent HPV 6/11/16/18/31/33/45/52/58 recombinant vaccine. The HPV test can be done on the same sample of cells collected from the Pap test and it can help to know HPV types. Conclusion: Cervical cancer due to HPV can be prevented by vaccination and the pre-cancerous phase of cervical cancer can be screened by the HPV testing with the Pap test. The community health awareness plays a major role in cervical cancer prevention.
Introduction: World Health Organization in 2019 reported that about 1.5 billion people are infected with soil-trans-mitted helminths (STH) worldwide. Infected children with STH might manifest signs of anaemia and impaired nutri-tionally or physically. This study aimed to look at the prevalence of STH in the area of North Sabah among rural pri-mary schools and examine the associated factors. Methods: A cross-sectional study was conducted in four selected primary school in the district of Kudat of Sabah from 2014 to 2015. Tools used for the study were questionnaire and stool sampling. Questionnaire focused data on sociodemographic, hygiene and use of anti-helminths drugs. Stool samples collected were sent for microscopic examination for presence of STH ova. Written consents were obtained from parents/guardians. Chi-square was used to examine the association of having STH and factors on utilities fa-cilities, hygiene and anti-helminths drug. SPSS version 23 was used for statistical analysis. Results: There was 433 school children aged 7 to 12 years old with 224 males and 209 females respondents. Three-quarters main source of water supply in the homes from treated water. Those with proper built toilet were 96%. Practices of washing hands after toilet and before eating were 96% as well. Almost 95% wear slippers when outside homes. Only 61% took their anti-helminths drug in the past 1 year while in the last 6 months the uptake was 38.7%. The prevalence of positive ova of STH in the stool sample was 57 out of 433 or 13.2%. STH infection was not statistically significant associated with the above factors. Conclusion: The prevalence of STH infection among primary school children in the district of Kudat although has lowered over the years is still considered higher than most states in Malaysia. Continuous public health intervention is necessary to further bring down the prevalence of STH infections.
The three plasmid borne alternative dihydropteroate synthetase (DHPS) genes namely sul1, sul2 and sul3 genes were heterologous in amino acid sequence and have about 40 – 50% identity. However, they have same DHPS activity with disc diffusion zone size of 6 mm with suphamethoxazole disc in our previous study. Sul1, sul2 and sul3 genes were observed in sulphamethoxazole resistant uropathogenic Escherichia coli (UPEC). In this study, all the three genes were cloned into E. coli host and minimum inhibitory concentration (MIC) was investigated for each sul gene to compare the activities of sul genes. The MIC values of E.coli containing sul2, sul1 and sul3 genes inserted recombinant plasmid were observed to have 18.5 mg/ml, 18 mg/ml and 17.5 mg/ml respectively as mean value of five experimental results. Although comparable MICs were obtained as a result, the MIC value was highest in E. coli carrying sul2 gene indicating that this DHPS enzyme activity of sul2 was strongest among three sul genes.
Introduction: Dengue is caused by dengue virus (DENV) which is a member of the genus Flavivirus of the family Flaviviridae. The prevalence of dengue has been increasing all over the world especially in Southeast Asia and Western Pacific regions. In 2016 - 2017 dengue outbreaks were reported in Sandakan and Kudat of Sabah, Malay-sia. The aim of this study was to determine the serotypes of dengue viruses circulating in these two sites during the outbreaks. Methods: A total of 200 dengue patients’ sera tested positive with NS1 and IgM & IgG rapid test (PanBio) were collected from Hospital Duchess of Kent Sandakan and Hospital Kudat between June 2016 and December 2017. PCR was done at the Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah. One-Step Reverse transcriptase PCR (RT-PCR) and nested PCR was performed using C-prM amplimers designed by Lanciotti et al and later redesigned by Chien et al, followed by sequencing some of the PCR products. Results: Out of 200 sera tested 128 were PCR positive. All the four dengue serotypes were detected with PCR products with specific sizes in gel electrophoresis. However, in four samples, no serotype-specific band was amplified by the nested PCR, while they were dengue-positive in RT-PCR showing 511 base pair amplicon. Sequencing results revealed all four samples were found to belong to DENV4. The sequences of these samples were aligned with that of DENV 4 reverse primer rTS4. The DENV4 specific primer rTS4 was found to have four mismatched nucleotides to the DENV4 sequences. Conclusion: There was a co-circulation of DENV1 to 4 in Sandakan and Kudat in the study period. DENV1 was the predominant serotype. DENV4 specific C-prM primer rTS4 should be redesigned for the local DENV4 strain in Sabah in future research.
Introduction: Tuberculosis (TB) still remains a public health problem worldwide and the emergence of drug resistant TB (DR-TB) has worsened the situation as it is difficult and expensive to treat. The characterization of the genetic mutations underlying streptomycin resistance may be helpful in developing rapid detection methods which may guide clinicians in making therapeutic decisions. The aim of this study is to detect mutations causing streptomycin (STR) resistance in Mycobacterium tuberculosis isolates from Sabah. Methods: Susceptibility testing was carried out in MGIT system for 42 Mycobacterium tuberculosis clinical isolates. The drug resistant isolates were subject to whole genome sequencing and in-silico analysis was performed to detect the mutations in the sequence of the rpsL gene known to confer resistance to anti-tuberculous drugs. Results: Of the 42 positive isolates, 27 (64.3%) are shown to be susceptible towards first line drugs (FLDs) while 15 (35.7%) isolates were mono- and multiple resistant to the FLDs. Our findings reveal that the isolate 145 possess mutations at codon 43 within rpsL gene with amino acid change A to G (K43R). Conclusion: Findings from this study enable us to expand our knowledge of mutations causing drug resistance in Mycobacterium tuberculosis and the point mutations, which can be used as the potential marker for detection of drug resistant isolates.
Introduction: Tuberculosis (TB) is the ninth leading cause of mortality in the world while it is the most prevalent infection which is ranked abolve HIV/AIDS. In Malaysia, tuberculosis is still a public health problem. Sabah State on Malaysian Borneo had 20-30% of total TB cases of the country. In Sabah, case notification rate of almost 200 per 100,000 population was still present in the last 10 years. Hotspots are defined as TB notification rate more than 100/100.000 in a district or TB notification rate more than 100/100,000 in the squatters’ area. In this study, cycle threshold (ct) values in GeneXpertMTB/RIF (Xpert) were tried to be correlated with growth in Mycobacterim growth indicator tubes (MGIT) by measurement of time to detection (TTD). Methods: Sputum samples from six hotspots of Kota Kinabalu were studied by Xpert as well as MGIT culture after processing of sputum samples. The correlation between Mean ct value of Xpert and TTD in MGIT was analysed by using IBM SPSS Statistic 25 and the statistical test used was Pearson Correlation test. Results: The results of Xpert indicated 35 of 204 sputum samples were pos-itive whereas only one sample was rifampicin resistant. The mean ct values were very low, low and medium in all the hotspots with sputum from one hotspot showed medium ct values predominantly. The sputum from remaining hotspots showed mainly very low and low ct values. MGIT results showed no growth in five samples with two very low, two low and one medium mean ct values. Conclusion: The finding indicated that there were correlations be-tween mean ct values of Xpert and TTD in MGIT with a few exceptions.