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• W3183459243 abstract "The gene of 18S ribosomal RNA or 18S rRNA is the universal gene function as a general genetic marker for species identification of microorganisms including parasites. Cryptosporidium has distinct 18S rRNA genes along different species within the same genus. In this study, polymerase chain reaction or PCR was used to study chemical components of PCR setup in amplification of 18S rRNA gene of this parasite. Cryptosporidium was collected from river water samples and its presence was confirmed using specific immunofluorescence detection of this parasite. Isolated water containing Cryptosporidium was then subjected to genomic DNA extraction before PCR step. The chemical components of PCR consisting of MgCI2, deoxynucleotide triphosphate (DNTPs), Polymerases, free DNase-water, universal primers and PCR buffer were studied in different volume and concentration. Each chemical component of PCR was optimized differently in yielding the same final volume of 20 μL per each reaction. The value range of chemical components of PCR consisted of MgCI2 (0.1 μM-0.5 μM), dNTPs (50-250 mM), free DNase water (5-10 μL), polymerases (0.2-0.5 U) and universal primers (2-20 μM). The result indicated that 0.2 μM of MgCI2, 100 mM of dNTPs, less than 10 μL of free DNase water, 0.5 U of polymerases and 10 mM of universal primers were the best combination to get better result for molecular identification of 18S rRNA Cryptosporidium. As a conclusion, accurate and proper concentration or volume of each PCR chemical components is essential for molecular identification of 18S rRNA Cryptosporidium gene. In future studies, study on gradient temperature parameters of PCR run can be included to study the chemical nature of amplified genes either in denaturation, annealing or extension steps.****************************************************************************************************************************Gen 18S ribosomal RNA adalah gen universal yang berfungsi sebagai penanda genetik umum untuk pengenalpastian spesiesmikroorganisma termasuk parasit. Cryptosporidium mempunyai gen 18S rRNA yang berlainan daripada spesies berbeza dalamgenus yang sama. Dalam kajian ini, tindak balas berantai polymerase atau PCR digunakan untuk mengkaji komponen kimiasusun atur PCR dalam amplifikasi gen 18S rRNA bagi parasit ini. Cryptosporidium telah diambil dari sampel air sungai dandisahkan kehadirannya menggunakan pengesanan immunopendaflour terhadap parasit ini. Sampel air yang diambil mengandungiCryptosporidium yang kemudiannya diteruskan untuk pengekstrakan genomik DNA sebelum peringkat PCR. Komponen kimiaPCR yang terdiri daripada MgCI2, deoksinukleotida trifosfat (dNTPs), polimerase, air yang bebas DNase, primer umum danlarutan penimbal PCR telah dikaji dalam isipadu dan kepekatan yang berbeza. Setiap komponen kimia PCR dioptimakan secara berbeza dalam menghasilkan isipadu akhir 20 uL bagi setiap tindak balas. Nilai julat komponen kimia PCR terdiri daripadaMgCI2(0.1 µM-0.5 µM), dNTPs (50-250 mM), air bebas DNase (5-10 µL), polimerase (0.2-0.5 U) dan primer primer umum (2-20 µM). Keputusan menunjukkan bahawa 0.2 µM MgCI2, 100 mM dNTPs, air bebas DNase yang kurang daripada 10 µL, 0.5 Upolimerase dan 10 mM primer umum adalah kombinasi terbaik untuk mendapatkan dapatan yang lebih baik bagi pengenalpastianmolekul Cryptosporidium 18S rRNA. Kesimpulannya, kepekatan atau isipadu yang tepat dan sesuai bagi setiap komponen kimiaPCR adalah penting untuk pengenalpastian molekul gen Cryptosporidium 18S rRNA. Bagi kajian masa depan, kajian ke ataskecerunan parameter suhu untuk menjalani PCR boleh dimasukkan untuk mengkaji sifat semulajadi kimia pada gen yangdiamplifikasi untuk peringkat-peringkat penyahaslian, pelekatan atau penyambungan." @default.
• W3183459243 created "2021-08-02" @default.
• W3183459243 date "2019-06-25" @default.
• W3183459243 modified "2023-10-14" @default.
• W3183459243 title "CHEMICAL COMPONENTS OF POLYMERASE CHAIN REACTION IN 18S rRNA FOR DETECTION OF Cryptosporidium FROM RIVER WATER SAMPLES" @default.
• W3183459243 doi "https://doi.org/10.17576/mjas-2019-2303-04" @default.
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