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"Background: real-time RT-PCR was recommended by WHO for COVID-19 diagnosis. The cycle threshold (Ct) values were expected to have an association with clinical manifestation. However, the diagnostic modalities such as quantitative molecular detection and virus isolation were not yet available for the routine test. This study has been conducted to analyze the relationship between the Ct values of qualitative rRT-PCR and the clinical manifestation and to describe the factors determining the result. Methods: from March to April 2020, specimens were sent to our laboratory from different healthcare centers in Jakarta. The patient's characteristic and clinical manifestation were extracted from the specimen's epidemiology forms. The specimens extracted and tested using rRT-PCR, and the Ct value were collected. The data were analyzed using the appropriate statistic test.Results: from 339 positive results, the mild to moderate case was 176 (52%) and the severe cases was 163 (48%). Female was dominant in the mild to moderate cases (58%), while the male was prevalent in the severe cases (60%). The median age for mild to moderate case was 35 years old and severe cases was 49 years old. Statistical analysis found relationship between both group with gender (p = 0.001) and age (p < 0.001), but not with the Ct value. Conclusion: many variables in specimen sampling and processing could affect the Ct value result. In addition, the disease's severity was depended with the host immune response, regardless the number of virus. There was suggested no significant difference between the Ct values of mild-moderate and severe COVID-19, and thus should not be loosely interpreted."

"Latar Belakang. Coronavirus Disease-19 (COVID-19) sampai sekarang masih menjadi ancaman kesehatan global. Baku emas diagnosis COVID-19 adalah pemeriksaan RT-PCR dari sampel usap nasofaring. Pengambilan sampel dengan cara ini memiliki kekurangan seperti rasa tidak nyaman pada pasien, risiko perdarahan, dan risiko paparan pada tenaga medis. Saliva merupakan salah satu alternatif sampel yang bisa digunakan untuk tujuan ini. Tujuan. Mengetahui sensitivitas, spesifisitas, nilai duga positif, nilai duga negatif, dan akurasi RTPCR saliva. Metode. Penelitian potong lintang pasien dewasa suspek COVID-19 pada April-Juni 2021 di instalasi gawat darurat rumah sakit Siloam Lippo Village. Pasien yang memenuhi syarat dan menyatakan setuju dilakukan pemeriksaan RT-PCR dari sampel usap nasofaring dan saliva. RTPCR dikerjakan dengan menilai gen N dan gen ORF1AB menggunakan alat Rotorgen QPlex-5Plus dengan batas positif CT Value < 40. Hasil. Sebanyak 126 pasien suspek COVID-19 yang eligible ikut penelitian selama periode studi. Enam pasien menolak mengikuti penelitian. Analisis akhir dikerjakan pada 120 pasien dengan proporsi laki-laki 42,5% dan median usia 50 tahun. Hasil RT-PCR positif ditemukan pada 69 (57,5%) sampel saliva dan 75 (62,5%) sampel usap nasofaring. Sensitivitas uji RT-PCR COVID19 dari sampel saliva adalah 86,67% (95% CI 76,84- 93,42), spesifisitasnya 91,11% (95% CI 78,78- 97,52). Nilai NDP yang didapat adalah 94,20% (95% CI 86,39-97,65) dan nilai NDN yang didapat 80,39% (95% CI 69,57-88,03). Akurasi yang didapat adalah 88,33% (95% CI 81,2093,47). Rerata CT value RT-PCR dari sampel saliva lebih tinggi dibandingkan sampel nasofaring, baik pada gen N (mean saliva 26,22 vs nasofaring 22,18; p= 0,01) maupun ORF1AB (mean saliva 26,39 vs nasofaring 23,24; p= 0,01). Simpulan. Saliva yang diambil dengan metode drooling merupakan sampel yang akurat untuk pemeriksaan RT-PCR COVID-19.

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Background. Coronavirus Disease-19 (COVID-19) is still a global health problem. Diagnostic gold standard for COVID-19 is RT-PCR of the nasopharyngeal swab specimen. However, this method has several issues such as patient’s discomfort, risk of bleeding, and risk of exposure to examiner. Saliva is a viable alternative sample for this examination. Aim. To find out the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of saliva RT-PCR. Method. Crossectional study in adult patient with suspect ofCOVID-19 during April-June 2021 in emergency unit Lippo Village Hospital. Eligible and agreed patient are examined with RT-PCR from nasopharyngeal swab and saliva. RT-PCR was done by targeting gene N and ORF1AB using Rotorgen QPlex-5-Plus with CT value cut off 40. Result. A total of 126 suspected COVID-19 cases were admitted to ER during study period. Six patients were disagree to join. Final analysis was carried out on 120 patients (42.5% male, media age 60). Positive RT-PCR was found in 69 (57.5%) saliva specimens and 75 (62.5%) nasopharyngeal specimens. Sensitivity of saliva specimens was 86.67% (95% CI 76.84- 93.42), with specificity of 91.11% (95% CI 78.78-97.52). NDP of saliva was 94.20% (95% CI 86.39-97.65) with NDN of 80.39% (95% CI 69.57-88.03). Saliva’s accuracy was 88.33% (95% CI 81.20-93.47). Mean CT value of saliva specimens was higher than nasopharyngeal specimens in both gene N (mean saliva 26.22 vs nasopharyngeal 22.18; p= 0.01) and ORF1AB (mean saliva 26.39 vs nasopharyngeal 23.24; p= 0.01). Conclusion. Saliva collected with drooling method is an accurate sample for COVID-19 RT-PCR."

"Latar Belakang : COVID- 19 disebabkan SARS-COV-2. WHO menerbitkan protokol pemeriksaan laboratorium untuk deteksi virus menggunakan metode real time RT-PCR dari spesimen swab nasofaring dan orofaring. Metode ini cukup invasif. Diperlukan tehnik pemeriksaan yang relatif aman dan nyaman untuk pasien. Penelitian ini bertujuan untuk melihat efetivitas swab bukal sebagai alternatif pemeriksaan SARS-COV-2.Metode : Studi uji diagnostik ini dilaksanakan sejak tahun 2020 - 2021, mengambil spesimen swab nasofaring, swab orofaring dan swab bukal dari pasien positif COVID- 19. Dilakukan optimasi, ekstraksi RNA virus dan real time RT-PCR .Hasil Penelitian : Hasil studi mengumpulkan 68 spesimen dari pasien COVID-19. Hasil uji nasofaring, orofaring dan bukal positif adalah 24 spesimen. Hasil uji nasofaring dan orofaring positif dengan uji bukal negatif adalah 23 spesimen. Berdasarkan nilai Ct < 20 dan Ct <25, hasil kesesuaian positif dan negatif adalah 100%. Nilai Ct < 30 hasil kesesuaian positif 85,3 % dan negatif adalah 100%. Nilai Ct < 40 , hasil kesesuaian positif 51,1 % dan negatif adalah 100%. Kesimpulan : Swab bukal dapat digunakan sebagai pemeriksaan alternatif pada pemeriksaan SARS- CoV-2.

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Background: COVID-19 caused by the SARS-COV-2 virus. WHO published protocol for the detection of the virus using the real time RT-PCR from nasopharyngeal and oropharynx swab specimens. This method is invasive. Required an examination technique that is relatively safe and comfortable. This study aims to see the effectiveness of the buccal swab as an alternative to the SARS-CoV-2 examination.

Methods: This diagnostic test study from 2020 to 2021, specimens of nasopharyngeal, oropharyngeal and buccal swabs from COVID-19. Specimens underwent an optimization, viral RNA extraction and real time RT-PCR.

Result : This study collected 68 specimens from COVID- 19 patients. The results of positive nasopharyngeal, oropharynx and buccal tests were 24 specimens. The results of a positive nasopharynx and oropharynx test with a negative buccal test were 23 specimens. Based on the values ​​of Ct < 20 and Ct < 25 , the results of positive agreement and negative are 100%. The value of Ct < 30 and Ct < 40  results in a positive agreement are 85.3% and 51,1 %. The negative  results are 100%.

Conclusion : Buccal swab can be used as an alternative test for SARS-CoV-2 examination."

"Latar Belakang: Melihat potensi tingginya jumlah virus didalam rongga mulut, dengan bukti bahwa SARS-CoV-2 ditemukan pada reseptor ACE2, perlu upaya untuk mencegah penularan dari pasien ke praktisi melalui saliva yang terkontaminasi. Virus ini menyebar lebih cepat karena SARS-CoV-2 bereplikasi disaluran pernapasan bagian atas dengan melepaskan patogen yang berpindah dari satu orang ke orang lain saat bersin dan batuk melalui penyebaran pernapasan. Diperkirakan waktu penularan bisa terjadi sebelum gejala muncul (sekitar 2,5 hari lebih awal dari munculnya gejala). Berkumur dengan hidrogen peroksida dapat menghilangkan lapisan permukaan epitel pada mukosa mulut yang diketahui terdapat reseptor ACE2 tempat terikatnya SARS- CoV-2 dan dapat menginaktivasi virus tersebut. Pedoman sementara American Dental Association (ADA) menyarankan penggunaan 1,5% Hidrogen peroksida sebagai pilihan untuk pembilasan mulut preoperatif sebagai obat kumur antiseptik. Nilai cycle threshold yang diperoleh RT – PCR bersifat semi-kuantitatif dan mampu membedakan antara viral load tinggi dan rendah. Tujuan Penelitian: Mengevaluasi perbedaan pengaruh penggunaan obat kumur diantara berkumur hidrogen peroksida 1,5% dan hidrogen peroksida 3% terhadap nilai cycle threshold RT-PCR pada pasien COVID - 19. Metode Penelitian: 42 subjek penelitian diambil dari pasien RSUP Persahabatan yang terinfeksi SARS-CoV-2 sesuai dengan kriteria inklusi dan ekslusi. Setelah dilakukan informed consent, subjek penelitian dibagi menjadi 3 kelompok, yaitu kelompok hidrogen peroksida 1,5%, kelompok hidrogen peroksida 3% dan kelompok kontrol. Subjek penelitian berkumur 30 detik di rongga mulut dan 30 detik di tenggorokan belakang dengan 15 ml sebanyak 3 kali sehari selama 5 hari. Analisis menggunakan nilai cycle threshold pada pemeriksaan RT-PCR pada hari ke-1, hari ke-3 dan hari ke-5 setelah berkumur. Hasil: Terdapat perbedaan bermakna pada hasil uji Friedman dan peningkatan nilai cycle threshold RT-PCR dari awal, hari ke-1, hari ke-3 dan hari ke-5 di keseluruhan kelompok dan masing – masing kelompok perlakuan. Peningkatan tertinggi nilai cycle threshold RT-PCR awal hingga hari ke-1 ditemukan pada kelompok hidrogen peroksida 3%, kemudian antara hari ke-1 hingga ke-3 dan hari ke-3 hingga hari ke-5 ditemukan pada kelompok hidrogen peroksida 1,5%. Kesimpulan: Berkumur hidrogen peroksida 1,5% dan hidrogen peroksida 3% berpengaruh terhadap peningkatan nilai cycle threshold RT-PCR SARS-CoV-2. Kedua konsentrasi hidrogen peroksida 1,5% dan hidrogen peroksida 3% memberikan pengaruh positif dalam menurunkan jumlah virus di rongga mulut, sehingga pilihan penggunaan konsentrasi hidrogen peroksida yang lebih kecil bisa menjadi pilihan untuk digunakan untuk berkumur.

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Background: Given the potential high number of viruses in the oral cavity, with evidence that SARS-CoV-2 is found at the ACE2 receptor, efforts are needed to prevent transmission from patient to practitioner through contaminated saliva. This virus spreads faster because SARS-CoV-2 replicates in the upper respiratory tract by releasing pathogens that are passed from one person to another when sneezing and coughing through respiratory spread. It is estimated that the time of transmission can occur before symptoms appear (about 2.5 days earlier than the onset of symptoms). Mouth rinse and gargling with hydrogen peroxide can remove the epithelial surface layer on the oral mucosa which is known to have ACE2 receptors where SARS-CoV-2 binds and can inactivate the virus. Interim guidelines of the American Dental Association (ADA) recommend the use of 1.5% hydrogen peroxide as an option for preoperative oral rinse as an antiseptic mouth rinse. The cycle threshold value obtained by RT-PCR is semi-quantitative and able to distinguish between high and low viral loads.

Objective: To evaluate the difference in the effect of using mouth rinse between 1.5% hydrogen peroxide and 3% hydrogen peroxide mouth rinse and gargling on the RT-PCR cycle threshold value in COVID-19 patients.

Methods: 42 subjects were patients recruited from Persahabatan General Hospital infected with SARS-CoV-2 according to the inclusion and exclusion criteria. Following informed consent procedure, the research subjects were divided into 3 groups, namely the 1.5% hydrogen peroxide group, the 3% hydrogen peroxide group and the control group. The subjects were instructed to rinse their mouths for 30 seconds and gargle for 30 seconds at the back of the throat with 15 ml of the mouth rinse 3 times a day for 5 days. Analysis of cycle threshold values was carried out using RT-PCR on day 1, day 3 and day 5 after mouth rinse and gargling.

Results: There were significant differences in the results of the Friedman test and an increase in the RT-PCR cycle threshold value starting from the beginning, day 1, day 3 and day 5 in the whole group and each treatment group. The highest increase RT-PCR cycle threshold value at day 1 was found in the 3% hydrogen peroxide group, while the increase between day 1 to 3 and day 3 to day 5 was found in the 1.5% hydrogen peroxide group.

Conclusion: Mouth rinse and gargling with 1.5% hydrogen peroxide and 3% hydrogen peroxide has an effect on increasing the cycle threshold value of the SARS-CoV-2 RT-PCR. Both 1.5% and 3% hydrogen peroxide concentration have a positive effect in reducing the number of viruses in the oral cavity, so the choice of using a lower hydrogen peroxide concentration can be an option to use for mouth rinse and gargling."

"Pada akhir tahun 2019 dilaporkan beberapa kasus pneumonia di Wuhan, Cina yang disebabkan oleh Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Penyakit yang ditimbulkan oleh virus ini disebut sebagai coronavirus disease 2019 (COVID-19). Jumlah kasus COVID-19 terus mengalami peningkatan dan penyebarannya terjadi pada seluruh kelompok usia termasuk anak-anak. Pemeriksaan real-time reverse transcription-polymerase chain reaction (rRT-PCR) telah diotorisasi oleh Food and Drug Administration (FDA) dan pada pemeriksaan ini dikenal istilah cycle threshold (Ct). Nilai Ct sering dijadikan acuan dalam menentukan tingkat keparahan penyakit pada anak, akan tetapi masih terdapat kontroversi apakah nilai Ct berhubungan dengan tingkat keparahan penyakit. Penelitian ini bermaksud mencari hubungan bermakna antara nilai Ct khususnya gen ORF1ab dan gen N dengan tingkat keparahan COVID-19 pada anak yang dibagi menjadi tingkat keparahan ringan dan sedang sampai kritis. Didapat 52 responden anak dalam penelitian ini, dengan 24 responden terdeteksi gen ORF1ab dan 49 responden terdeteksi gen N. Rerata nilai Ct gen ORF1ab kelompok ringan (33,5 ± 4,4) lebih tinggi dibandingkan dengan kelompok sedang sampai kritis (31,0 ± 6,0). Median nilai Ct gen N kelompok ringan (34,8 [21,3 – 39,4]) lebih tinggi dibandingkan dengan kelompok sedang sampai kritis (31,7 [19,4 – 38,9]). Tidak didapatkan hubungan bermakna baik antara nilai Ct gen ORF1ab (nilai p = 0,25) maupun gen N (nilai p = 0,159) dengan tingkat keparahan COVID-19 pada anak. Berdasarkan hasil penelitian ini, diperlukan berbagai pertimbangan dalam menginterpretasi nilai Ct.

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At the end of 2019, several cases of pneumonia were reported in Wuhan, China caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). The disease caused by this virus is known as Coronavirus Disease 2019 (COVID-19). The number of cases of COVID-19 continues to increase and its spread occurs in all age groups including children. Real-time reverse transcription-polymerase chain reaction (rRT-PCR) has been authorized by the Food and Drug Administration (FDA) and in this method a cycle threshold (Ct) value were obtained. The Ct value is often used as a reference in determining the clinical severity in children, but there is still controversy whether the Ct value is related to the clinical severity. This study intends to find a significant relationship between the Ct values, especially the ORF1ab gene and the N gene, with the COVID-19 clinical severity in children which is divided into mild and moderate to critical severity. There were 52 children in this study, with 24 children have ORF1ab gene detected and 49 children have N gene detected. The mean of ORF1ab gene Ct value in mild group (33.5 ± 4.4) was higher than moderate to critical group (31.0 ± 6.0). The median of N gene Ct value ​​in mild group (34.8 [21.3 – 39.4]) was higher than moderate to critical group (31.7 [19.4 – 38.9]). There was no significant relationship between the Ct value of the ORF1ab gene (p value = 0.25) and the N gene (p value = 0.159) with COVID-19 clinical severity in children. Based on the results of this study, various considerations are needed in interpreting the Ct value."

"Leptospirosis merupakan penyakit akibat infeksi bakteri Leptospira spp. patogen yang umumnya terjadi di negara tropis dan subtropis serta memiliki karakteristik berupa gejala klinis yang kurang spesifik. Vektor dari penyakit tersebut adalah tikus maupun hewan peliharaan, seperti anjing dan sapi. Microscopic agglutination test (MAT) merupakan uji baku emas leptospirosis yang telah ditetapkan WHO. Akan tetapi, uji tersebut kurang sensitif di fase awal terjadinya infeksi dan memiliki prosedur yang rumit. Konfirmasi melalui metode real-time polymerase chain reaction (RT-PCR) dengan gen secY menggunakan darah utuh dan serum dapat dilakukan untuk pengembangan diagnosis leptospirosis. Tujuan dari penelitian ini adalah mendeteksi gen secY pada sampel darah utuh dan serum pada pasien terduga leptospirosis yang meliputi pasien suspek dan probable di Klaten, Jawa Tengah dengan metode RT-PCR. Selain itu, penelitian ini juga bertujuan untuk membandingkan positivity rate hasil RT-PCR sampel darah utuh dan serum dari 111 pasien terduga leptospirosis di Klaten, Jawa Tengah. Metode penelitian ini meliputi isolasi DNA, kuantifikasi DNA, amplifikasi DNA dengan RT-PCR menggunakan probe dan pewarna ROX, serta analisis hasil RT-PCR. Hasil RT-PCR menunjukkan terdeteksinya gen secY pada sampel darah utuh dan serum, dengan positivity rate darah utuh sebesar 5,41% (6/111) dan serum sebesar 18,92% (21/111), sedangkan positivity rate pada pasien suspek adalah sebesar 19,51% (16/82) dan pada pasien probable sebesar 27,59% (8/29). Dengan demikian, darah utuh dan serum dapat digunakan untuk mendeteksi leptospirosis dengan RT-PCR menggunakan gen secY dengan serum sebagai sampel yang lebih sensitif dibandingkan darah utuh. Akan tetapi, perlu dilakukan upaya untuk meningkatkan kualitas metode deteksi, berupa proses ekstraksi, optimasi primer, maupun penggunaan gen pendamping. Selain itu, hasil RT-PCR tersebut juga dapat dikonfirmasi melalui analisis sekuens sebagai analisis lanjutan.

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Leptospirosis is a disease caused by infection with pathogenic Leptospira spp. bacteria that commonly occurs in tropical and subtropical countries and has characteristics in the form of less specific clinical symptoms. The vectors of the disease are rats and domestic animals, such as dogs and cattle. Microscopic agglutination test (MAT) is the WHO gold standard test for leptospirosis. However, the test is less sensitive in the early phase of infection and has a complicated procedure. Confirmation through real-time polymerase chain reaction (RT-PCR) method with secY gene using whole blood and serum can be done for the development of leptospirosis diagnosis. The aim of this study is to detect secY gene in whole blood and serum samples of presumed leptospirosis patients including suspected and probable patients in Klaten, Central Java using RT-PCR method. In addition, this study also aimed to compare the positivity rate of RT-PCR results of whole blood and serum samples from 111 presumed leptospirosis patients in Klaten, Central Java. The method of this research includes DNA isolation, DNA quantification, DNA amplification by RT-PCR using ROX probes and dyes, and analysis of RT-PCR results. RT-PCR results showed the detection of secY gene in whole blood and serum samples, with a positivity rate in whole blood is 5.41% (6/111) and in serum is 18.92 (21/111), meanwhile the positivity rate in suspected patients is 19.51% (16/82) and in probable patients is 27.59% (8/29). Thus, whole blood and serum can be used to detect leptospirosis by RT-PCR using the secY gene with serum as the more sensitive sample than whole blood. However, efforts need to be made to improve the quality of the detection method, in the form of the extraction process, primer optimization, and the use of companion genes. In addition, the RT-PCR results can also be confirmed through sequence analysis as a follow-up analysis."

"Pada bulan Desember, 2019, serangkaian kasus pneumonia dengan penyebab yang tidak diketahui muncul di China. Analisis data menunjukkan adanya coronavirus baru, yang diberi nama SARS-CoV-2. Beradasarkan WHO dan CDC pemeriksaan yang digunakan untuk mendeteksi SARS-CoV-2 adalah metode molekular RT-PCR, salah satu kit yang digunakan adalah BioCoV-19 RT-PCR. Penelitian ini bertujuan membandingkan uji RT-PCR kit BioCoV-19 RT-PCR dengan N1N2 CDC sebagai standar dalam mendeteksi SARS-CoV-2, serta melakukan uji deteksi minimal untuk mengetahui sensitivitas analitik dari kit BioCoV-19 RT-PCR, menguji reaksi silang terhadap mikroba saluran nafas lain, dan menilai secara deskriptif karakteristik subjek penelitian. Perbandingan uji kit BioCoV-19 RT-PCR dengan N1N2 CDC mendapatkan nilai sensitivitas, spesifisitas, nilai duga positif (NDP) dan nilai duga negative (NDN). Hasil pada penelitian ini menunjukkan bahwa sensitivitas dan spesifisitas BioCoV-19 RT-PCR Kit secara umum adalah 97,50% dan 100%, dengan Nilai Duga Positif (NDP) 100% dan Nilai Duga Negatif (NDN) 96,49%. Hasil uji minimal deteksi untuk primer-probe N1N2 CDC dan BioCoV-19 RT-PCR Kit setelah dilakukan dilusi bertingat sebanyak enam kali pengenceran yakni 3,5 kopi/reaksi (rerata nilai Ct 35,21). Uji reaksi silang tidak terdeteksi adanya reaksi silang dari 12 bakteri, tujuh virus dan tiga jamur. Karakteristik subjek penelitian lebih banyak pada laki-laki sebanyak (61,5%), untuk usia lebih banyak pada usia berkisar 20-40 tahun (56,29%), gejala klinis pasien saat datang lebih banyak gejala ringan.

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In December, 2019, a series of pneumonia cases of unknown cause appeared in China. Analysis of the data indicated the presence of a new coronavirus, which was named SARS-CoV-2. Based on WHO and the CDC, the tests used to detect SARS-CoV-2 are the molecular RT-PCR method, one of the kits used is BioCoV-19 RT-PCR. This study aims to compare the RT-PCR test of the BioCoV-19 RT-PCR kit with the CDC's N1N2 as a standard in detecting SARS-CoV-2, as well as to conduct a minimal detection test to determine the analytical sensitivity of the BioCoV-19 RT-PCR kit, to test cross reactions against other respiratory tract microbes, and descriptively assessed the characteristics of the research subjects. Comparison of the BioCoV-19 RT-PCR test kit with N1N2 CDC obtained sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). The results of this study showed that the sensitivity and specificity of the BioCoV-19 RT-PCR Kit in general were 97.50% and 100%, with a positive predictive value (PPV) of 100% and a negative predictive value (NPV) of 96.49%. The minimum test results for detection of the N1N2 CDC primer-probe and the BioCoV-19 RT-PCR Kit were carried out after six dilutions of 3.5 copies/reaction (mean Ct value 35.21). The cross-reaction test did not detect any positives of 12 bacteria, seven viruses and three fungi. The characteristics of the study subjects were more male (61.5%), for ages ranging from 20-40 years (56.29%), the clinical symptoms of the patients when they arrived were more mild symptoms."

"Indonesia memiliki kekayaan alam laut yang sangat beragam, yang dapat berpotensi untuk mengandung senyawa bioaktif yang masih kurang dieksplorasi lebih dalam. Dalam penelitian ini, peneliti ingin mengeksplorasi senyawa metabolit sekunder yang berasal dari invertebrata laut yang berada di perairan Indonesia dalam kegunaannya untuk mengatasi masalah pandemi yang terjadi di dunia selama 3 tahun terakhir. Sebanyak 137 senyawa yang diperoleh dari berbagai spesies invertebrata laut seperti karang lunak, tunikata, dan spons ditapiskan dengan menggunakan penapisan virtual terhadap ACE2 dan Spike Protein Virus varian omicron. Selanjutnya setelah didapatkan 20 senyawa yang memiliki potensi dari proses penapisan, dilakukan proses studi penambatan molekuler dan prediksi ADMET untuk menemukan senyawa terbaik dari senyawa yang telah terpilih. Setelah didapatkan senyawa paling baik, dilakukan studi dinamika molekuler untuk melihat kestabilan ligan-reseptor pada senyawa yang terbaik. Dari hasil penelitian didapatkan bahwa ada 2 senyawa yaitu Acanthomanzamine E dan Cortistatin L, yang menunjukkan hasil yang cukup menjanjikan sebagai bloker terhadap ACE2 dan juga SARS-CoV-2 Omicron SPV. Acanthomanzamine E memiliki energi ikatan sebesar -12,87 kcal mol dan -8,61 kcal/mol terhadap ACE2 dan SPV, sementara Cortistatin L memiliki energi ikatan sebesar -9,96 kcal/mol dan -7,56 kcal/mol terhadap ACE2 dan SPV. Simulasi MD sebesar 50ns menunjukkan kestabilan kedua senyawa pada reseptornya masing-masing, dan juga dibandingkan terhadap senyawa pembanding yaitu XX5 untuk pembanding terhadap ACE2 dan Ceftriaxone digunakan sebagai senyawa pembanding terhadap Spike Protein Virus SARS-CoV-2 varian omicron.

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Indonesia has diversified marine creatures, which could potentially have bioactive substances still underexplored. In this research, we tried to explore these secondary metabolites from Indonesian marine invertebrates to find the lead compound in overcoming the pandemic problem that happened in the world for the last 3 years. A total of 137 compounds from different types of invertebrates, such as soft corals, tunicates, and sea sponges screened against ACE2 and Spike Protein Virus of the Omicron variant. From the virtual screening. we obtained top 20 compounds that have potential to bind with the receptors. Furthermore, molecular docking and ADMET prediction studied in the top 20 compounds to filter compound down to the best 2 compounds. We also did preliminary molecular dynamics studies to see the stability of ligand-receptor occur between the best compound and the receptor. We found that two compounds, Acanthomanzamine E and Cortistatin L, show prominent results as ACE2 and SARS-CoV-2 blockers, especially from molecular docking, which have -12,87 kcal/mol and -9,96 kcal/mol towards ACE2 and -8,61 kcal/mol and -7,56 kcal/mol towards SPV Omicron respectively. We see promising results from the 50 ns MD simulation of these compounds and their comparison which is XX5 for ACE2 receptor and Ceftriaxone in Spike Protein Virus SARS-CoV-2 omicron variant."

"Latar Belakang. Penyakit COVID-19 yang disebabkan oleh SARS-CoV-2 dengan cepat menyebar dan menjadi Pandemi serta menimbukan kerugian yang sangat besar pada masyarakat di seluruh dunia. Deteksi virus yang cepat dan akurat memegang peranan penting untuk mengendalikan penyebaran di masyarakat dan membantu pasien untuk menghindari perkembangan penyakit lebih lanjut. Saat ini real-time Reverse Transcriptase Polymerase Chain Reaction (real-time RT-PCR) merupakan reference standard diagnostic test dalam mendeteksi SARS-CoV-2 di seluruh dunia. Real-time Reverse Transcriptase Loop Mediated Isothermal Amplification (RT-LAMP) merupakan metode amplifikasi asam nukleat isotermal yang memiliki sensitivitas dan spesifisitas tinggi dan waktu pengerjaan yang jauh lebih cepat dibandingkan real-time RT-PCR. Tujuan. Penelitian bertujuan untukiDetectTM SARS-CoV-2 Detection KitSARS-CoV-2.Metode. Penelitian ini merupakan uji kesesuaian dengan studi potong lintang dan menggunakan metode pengumpulan sampel secara consecutive sampling. Subjek penelitian yaitu spesimen swab nasofaring dan orofaring dalam VTM (N=80) yang dianalisis di Laboratorium Mikrobiologi Klinik Fakultas Kedokteran Universitas Indonesia. iDetectTM SARS-CoV-2 Detection Kit menggunakan uji kesesuaian Kappa aplikasi SPSS versi 25.Hasil. Dari 72 sampel valid yang diperiksa dengan real-time RT-LAMP iDetectTM SARS- CoV-2 Detection Kit dan real-time RT-PCR, 24 sampel terdeteksi positif oleh real-time RT-PCR dan hanya tiga sampel yang terdeteksi positif oleh real-time RT-LAMP. Tiga sampel yang terdeteksi positif oleh real-time RT-LAMP termasuk ke dalam sampel - sampel yang terdeteksi positif oleh real-time RT-PCR. Secara statistik, uji reliabilitas / uji kesesuaian dari penelitian kedua alat diagnostik ini menunjukkan nilai Kappa yang sangat rendah, yaitu 0,16. Uji kesesuaian Kappa kedua alat ini menunjukkan bahwa hasil pemeriksaan alat real-time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit tidak sesuai dengan alat real-time RT-PCR dalam mendeteksi SARS-CoV-2. Kesimpulan. Real-time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit tidak sesuai dengan alat real-time RT-PCR dan tidak dapat digunakan sebagai alat diagnostik dalam mendeteksi SARS-CoV-2.

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Introduction. COVID-19 caused by SARS-CoV-2 quickly spread and became Global Pandemic and caused enormous losses to people around the world. Rapid and accurate virus detection plays an important role in controlling spread in the community and helping patients to avoid further disease progression. Currently, real-time Reverse Transcriptase Polymerase Chain Reaction (real-time RT-PCR) is determined as the reference standard diagnostic test for detecting SARS-CoV-2 worldwide. Real-time Reverse Transcriptase Loop Mediated Isothermal Amplification (RT-LAMP) is an isothermal nucleic acid amplification method that has high sensitivity and specificity and provide faster result than real-time RT-PCR. Aim. The research aims to compare real-time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit and real-time RT-PCR in detecting SARS-CoV-2. Method. This research is a comparison test with a cross-sectional study and uses a consecutive sampling method to collect samples. The research subjects were nasopharyngeal and oropharynx swab specimens in VTM (N=80) which were analyzed at the Clinical Microbiology Laboratory, Faculty of Medicine, Universitas Indonesia. The data obtained from the real-time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit and real-time RT-PCR test results were analyzed using Kappa test SPSS version 25.

Results. Of the 72 valid samples examined by the real-time RT-LAMP iDetectTM SARS- CoV-2 Detection Kit and real-time RT-PCR, 24 samples were detected positive by real- time RT-PCR and only three samples were detected positive by real-time RT-LAMP. Three samples that were detected positive by the real-time RT-LAMP were included in the samples that were detected positive by the real-time RT-PCR. Statistically, the comparison test of the research of these two diagnostic tools showed a very low Kappa value, which was 0.16. The Kappa suitability test of these two tools showed that the real- time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit were not compatible with the real- time RT-PCR in detecting SARS-CoV-2. Summary. Real-time RT-LAMP iDetectTM SARS-CoV-2 Detection Kit is not compatible with real-time RT-PCR and cannot be used as a diagnostic tool in detecting SARS-CoV-2."

"Pandemi Coronavirus Disease 2019 (COVID-19) merupakan pandemi disebabkan oleh virus SARS-CoV-2. Indonesia diketahui sebagai salah satu negara dengan tingkat infeksi COVID-19 paling tinggi di dunia. Deteksi cepat secara Real Time Reverse Transcription Polymerase Chain Reaction (rRT-PCR) merupakan salah satu langkah yang diperlukan untuk menekan laju penyebaran COVID-19. Kit deteksi BioCore 2019-nCoV Real Time PCR Kit adalah salah satu kit dignosis COVID-19 produksi BioCore. Ltd., Korea Selatan. Kit diagnosis BioCore telah beredar di Indonesia dan perlu diuji keakuratan diagnosis yang dihasilkan untuk menghindari hasil negatif palsu. Pengujian dilakukan menggunakan protokol Penjaminan Mutu Eksternal (PME) Kementerian Kesehatan Indonesia dengan melibatkan 30 sampel uji dan membandingkan hasil uji terhadap kit gold standard CDC dengan gen target N1, N2, dan HRP. Alur kerja penelitian dimulai dari proses pengambilan sampel, ekstraksi RNA, persiapan mastermix, adisi template RNA, dan amplifikasi template dengan metode rRT-PCR. Hasil penelitian menunjukkan adanya amplifikasi pada kontrol yang digunakan, sehingga proses diagnosis dapat dilakukan. Nilai Ct IC kit Biocore dan IC CDC menunjukkan perbedaan signifikan (P 0,05; CI=95%). Gen target SARS-CoV-2 tidak terdeteksi pada kit Biocore dengan nilai Ct>35, serta didapatkan nilai sensitivitas dan spesifisitas analitik kit Biocore berturut-turut sebesar 75% dan 100%. Hasil uji Kit Biocore terhadap pasien terinfeksi COVID-19 di Indonesia tidak memenuhi standar kit diagnosis yang ditetapkan oleh WHO, yaitu memiliki sensitivitas analitik sebesar 95%. Peninjauan ulang primer pada kit Biocore perlu dilakukan untuk memperbaiki mutu kit dalam deteksi awal virus SARS-CoV-2 di Indonesia.

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The Coronavirus Disease 2019 (COVID-19) pandemic is a pandemic caused by the SARS-CoV-2 virus. Indonesia is known as one of the countries with the highest COVID-19 infection rate in the world. Real Time Reverse Transcription Polymerase Chain Reaction (rRT-PCR) detection is one of the steps needed to accelerate the spread of COVID-19. The BioCore 2019-nCoV Real Time PCR Kit is one of the COVID-19 diagnosis kits produced by BioCore. Ltd., South Korea. The BioCore diagnostic kit has been circulating in Indonesia and needs to be tested for the accuracy of the resulting diagnosis to avoid false negative results. The test was carried out using the External Quality Assurance (PME) protocol of the Indonesian Ministry of Health involving 30 test samples and test results against the CDC gold standard kit with target genes N1, N2, and HRP. The research workflow starts from the sampling process, RNA extraction, mastermix preparation, RNA template addition, and template amplification using the rRT-PCR method. The results showed that there was amplification of the controls used, so that the diagnosis process could be carried out. The Ct values ​​of the Biocore IC kit and the CDC IC showed a significant difference (P 0.05; CI=95%). The SARS-CoV-2 target gene was not detected in the Biocore kit with a Ct value>35, ​​and the sensitivity and analytical specificity of the Biocore kit were 75% and 100%, respectively. The results of the Biocore Kit test on patients infected with COVID-19 in Indonesia do not meet the diagnostic kit standard set by WHO, which has an analytical sensitivity of 95%. Primary review on the Biocore kit needs to be done to improve the quality of the kit in early detection of the SARS-CoV-2 virus in Indonesia."