Kinasih Prayuni
Genetic Research Center, YARSI Research Institute, YARSI University, Jakarta, Indonesia

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High frequency of NAT2 slow acetylator alleles in the Malay population of Indonesia: an awareness to the anti-tuberculosis drug induced liver injury and cancer Susilowati, Retno W.; Prayuni, Kinasih; Razari, Intan; Bahri, Syukrini; Yuliwulandari, Rika
Medical Journal of Indonesia Vol 26, No 1 (2017): March
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (389.229 KB) | DOI: 10.13181/mji.v26i1.1563

Abstract

Background: Arylamine N-acetyltransferase 2 (NAT2) polymorphism was previously reported to have association with the risk of drug toxicities and the development of various diseases. Previous research on the Indonesian population, especially Javanese and Sundanese, showed that there were 33% NAT2 slow acetylator phenotype. The aim of this study was to map the NAT2 variation in the Malay ethnic to gain a deeper insight into NAT2 haplotypic composition in this ethnic.Methods: 50 healthy samples from the Indonesian Malay ethnic were obtained. They were interviewed about their ethnic backgrounds for the last three generations. DNA was extracted from peripheral blood and NAT2 genotyping was done using the PCR direct Sequencing. Data were compiled according to the genotype and allele frequencies estimated from the observed numbers of each specific allele. Haplotype reconstruction was performed using PHASE v2.1.1 software.Results: We found 7 haplotypes consisting of 6 SNPs and 14 NAT2 genotype variations in Indonesian Malay population. The most frequent allele was NAT2*6A (38%) which was classified as a slow acetylator allele. According to bimodal distribution, the predicted phenotype of the Malay population was composed of 62% rapid acetylator and 38% slow acetylator. According to trimodal distribution, the predicted phenotypes for rapid, intermediate and slow acetylators were 10%, 52% and 38% respectively.Conclusion: Our result indicates the presence of the allelic distribution and revealed the most frequent acetylator status and phenotype for the Indonesian Malay population. The result of this study will be helpful for future epidemiological or clinical studies and for understanding the genetic basis of acetylation polymorphism in Indonesia.
DETEKSI MUTASI LANGKA, DELESI 619 BP, PADA GEN BETA-GLOBIN DARI ETNIS MELAYU MAHASISWA FAKULTAS KEDOKTERAN UNIVERSITAS YARSI Kenconoviyati, Kenconoviyati; Prayuni, Kinasih; Susilowati, RW; Yuliwulandari, Rika; Salam M. Sofro, Abdul
Jurnal Kedokteran YARSI Vol 23, No 2 (2015): MEI - AGUSTUS 2015
Publisher : Lembaga Penelitian Universitas YARSI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.228 KB) | DOI: 10.33476/jky.v23i2.98

Abstract

Beta-thalassemia merupakan gangguan hematologis autosomal yang secara genetis mengakibatkan berkurangnya sintesis beta-globin di hemoglobin. Beta-talasemia sebagian besar disebabkan oleh mutasi titik, insersi atau delesi dalam gen beta-globin yang terletak pada lengan pendek kromosom 11. Organisasi Kesehatan Dunia (WHO) memperkirakan terdapat sekitar 1,5% dari populasi global (80-90 juta orang) adalah pembawa ?-thalassemia. Tidak ada studi komprehensif untuk mendeteksi pembawa beta-thalassemia di Indonesia, terutama untuk mutasi delesi 619 bp, yang mencakup ekson 3 dan memiliki prevalensi yang tinggi. Kami menggunakan metode gap-PCR yang di-kombinasikan dengan metode elektroforesis gel untuk memper-kirakan adanya mutasi delesi 619 bp pada 48 siswa Fakultas Kedokteran Universitas YARSI dengan etnis Melayu. Analisis Blast hasil sekuensing dari ketiga sampel menunjukkan bahwa terdapat similaritas 98% antara hasil amplifikasi dengan ke daerah gen beta-globin pada kromosom 11 (No. Aksesi U01317.1). Berdasarkan hasil visualisasi elektroforesis gel, semua produk PCR dari 48 sampel, menunjukkan bahwa semua sampel tidak membawa mutasi delesi 619 bp yang ditunjukkan dengan ukuran produk PCR yang sama dari semua sampel, yaitu berukuran 1.457 bp dan 2.291 bp dari PCR I dan 1.212 bp dari PCR II.Beta-thalassaemia is an autosomal haematological disorder resulting in a genetically deficient synthesis of the ?-globin chain in haemoglobin. It is mostly caused by point mutations, a small deletions or insertions within the beta-globin gene which is located as a cluster on the short arm of chromosome 11. The World Health Organization has estimated that about 1.5% of the global population (80 to 90 million people) were carriers of ?-thalassemia. There are no comprehensive study to detect carrier of ?-thalassemia in Indonesia especially for 619 bp deletion mutation, which encompasses exon 3, that has greater prevalence. We used gap-PCR combined with gel electrophoresis methods to roughly screen the presence of major indel mutation in 48 Medical Faculty, Universitas YARSI students with Malay ethnic. To validate whether the PCR product obtained is the beta-globin gene, a direct sequencing of 3 PCR products were performed. The Blast analysis of the sequence was also done using NCBI database. The result showed that the PCR products obtained in this study showed 98% identity to human beta-globin gene region on chromosome 11 (No. Acc. U01317.1). In the electrophoresis of all PCR products of 48 samples, the result showed that all the samples did not carry any major indel mutation showing by the presence of similar length of PCR products in gel electrophoresis, which has 1.457 bp and 2.291 bp product from PCR I and 1.212 bp product from PCR II. 
HLA-DQB1*05:02 Allele Association with Anti-Tuberculosis Drug Induced Liver Injury: A Single-Hospital Based Study in Jakarta, Indonesia Kinasih Prayuni; Hilyatuz Zahroh; Syafrizal Syafrizal; Rika Yuliwulandari
Medical Laboratory Technology Journal Vol. 9 No. 2 (2023): December
Publisher : Poltekkes Kemenkes Banjarmasin Jurusan Analis Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31964/mltj.v9i2.547

Abstract

Past studies have delved into the genetic factors underlying anti-tuberculosis drug-induced liver injury (AT-DILI), primarily concentrating on polymorphisms in genes responsible for drug-metabolizing enzymes. However, the immune system's potential impact on drug adverse effects, specifically through genes such as HLA, has received limited attention. Previous research has notably revealed an association between HLA-DQB1*05 and AT-DILI, specifically the prevalence of the HLA-DQB*05:02 allele in AT-DILI patients. In light of this, our study aimed to investigate a potential link between HLA-DQB1*05:02 alleles and AT-DILI. In this study, we included 51 AT-DILI cases and 59 controls belonging to the Javanese ethnic group. The HLA-DQB1*05:02 genotypes were determined using a customized PCR-based typing method, and the results were further confirmed by analyzing five samples via the Luminex assay. Our findings revealed a significant association between HLA-DQA1*05: 02 and the risk of AT-DILI (P = 0.022; OR (95% CI) = 6.11 (1.25-29.74)). Moreover, the consistent results obtained from the Luminex assay validated the reliability of the custom PCR-based genotyping approach. This preliminary study sheds light on the relationship between the HLA-DQB1*05:02 allele and AT-DILI within the Indonesian population. Furthermore, our study demonstrates the dependability of custom PCR-based genotyping in detecting HLA-DQB1*05:02 alleles. Nevertheless, further research is imperative to corroborate and expand upon our findings.