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Abstrak :
Deteksi DNA adduct dapat dijadikan sebagai pendekatan untuk mendeteksi dini risiko kanker. Salah satu produk kerusakan oksidatif DNA adalah 8-hidroksi-2’-deoksiguanosin (8-OHdG). Penelitian ini dilakukan untuk mendeteksi 8-OHdG secara in vitro dan in vivo. Studi in vitro dilakukan dengan inkubasi 2’-deoksiguanosin dengan H2O2 dan akrilamida pada variasi pH 7,4 dan 8,4 selama 24 jam dalam suhu 37 oC. Kemudian hasil inkubasi dianalisis menggunakan HPLC. Sedangkan secara in vivo dilakukan deteksi 8-OHdG dalam urin pasien kanker paru stadium III-IV, urin perokok, dan urin non perokok dengan menggunakan LCMS/MS. Pada validasi instrumen HPLC diperoleh nilai regresi linier 0,9985, nilai LOD dan LOQ sebesar 6,108 ppb dan 20,361 ppb. Sedangkan untuk LCMS/MS diperoleh nilai regresi linier sebesar 1, nilai LOD dan LOQ sebesar 1,819 ppb and 6,066 ppb. Hasil penelitian menunjukkan bahwa paparan H2O2 dan akrilamida dapat membentuk 8-OHdG. Konsentrasi 8-OHdG yang terbentuk dari inkubasi 2-deoksiguanosin dan H2O2 serta 2-deoksiguanosin, H2O2, dan akrilamida maksimum pada pH 8,4 yakni sebesar 2,151 ppm dan 2,617 ppm. 8-Hidroksi-2’-Deoksiguanosin terdeteksi dalam urin pasien kanker paru, perokok, dan non perokok masing-masing sebesar 4,668 – 19,919 ppb, 6,873 – 12,111 ppb, -0,502 – 6,578 ppb. Nilai rata-rata konsentrasi 8-OHdG dalam sampel urin pasien kanker paru, perokok dan non perokok masing-masing sebesar 9,710 ppb, 10,226 ppb, dan 3,080 ppb. ......DNA adduct detection could be an approach to early detection of risk cancer. One of oxidative DNA damage products is 8-hydroxy-2’-deoxyguanosine (8-OHdG). This study was conducted to detect DNA adduct 8-OHdG in vitro and in vivo. In vitro study was started to incubate 2’-deoxyguanosine added by H2O2 and acrylamide in various pH for 24 hours at 37 oC. Then the result was analyzed with HPLC. In vivo study was conducted detection 8-OHdG in urine of lung cancer patients with stage III-IV disease, smokers and non smokers using LCMS/MS. Instrument validation (HPLC) was yielded linear regression value 0,9985, LOD and LOQ as much as 6,108 ppb and 20,361 ppb as well as validation instrument of LCMS/MS was yielded linier regression value 1, LOD and LOQ as much as 1,819 ppb and 6,066 ppb.The results of study found exposure of H2O2 to 2-deoxyguanosine induced 8-OHdG formation and the addition of acrylamide increased 8-OHdG formation. The highest 8-OHdG level obtained by incubation of 2’-deoxyguanosine and H2O2 then 2’deoxyguanosine, H2O2 and acrylamide at pH 8,4 as much as 2,151 ppm and 2,617 ppm. 8-Hydroxy-2’-Deoxyguanosine was detected in urine of lung cancer patients, smokers and non smokers respectively 4,668 – 19,919 ppb, 6,873 – 12,111 ppb, -0,502 – 6,578 ppb. The mean value of 8-hydroxy-2’-deoxyguanosine in urine of lung cancer patients, smokers and non smokers as much as 9,710 ppb, 10,226 ppb, and 3,080 ppb.

Abstrak :
Latar Belakang: Kanker paru adalah penyakit dengan ancaman serius di Indonesia. Progresifitas massa tumor merupakan salah satu faktor yang mempengaruhi kesintasan hidup pasien kanker paru. Karsinoma sel kecil (KPKSK) menunjukkan progresifitas yang lebih tinggi daripada karsinoma bukan sel kecil (KPKBSK). Beberapa studi menunjukkan bahwa pasien KPKBSK memiliki tingkat kesintasan hidup yang lebih baik daripada pasien KPKSK. Penelitian ini bertujuan untuk menilai perbedaan kesintasan antara pasien KPKSK dan KPKBSK di Rumah Sakit Kanker "Dharmais" (RSKD) dengan mengontrol variabel umur, jenis kelamin, stadium klinis, dan penatalaksanaan. Metode: Studi kohort retrospektif ini melibatkan 949 partisipan (KPKSK dan KPKBSK) di RSKD dari tahun 2013 hingga 2017, dengan follow-up hingga tahun 2021. Tingkat kesintasan dianalisis menggunakan metode Kaplan-Meier, dan efek prediktor dinilai dengan model Cox proportional hazard. Hasil: Kesintasan pasien KPKSK di RSKD pada periode 2013-2017 lebih rendah dibandingkan dengan pasien KPKBSK. Kesintasan di tahun pertama pada pasien KPKSK adalah 31,21%, dan pada tahun ketiga, keseluruhan pasien KPKSK meninggal. Pada pasien KPKBSK, kesintasan di tahun pertama, ketiga, dan kelima berturut-turut adalah 45,19%, 23,62%, 15,92%. Median waktu kesintasan pasien KPKSK adalah hari ke-172, lebih pendek dibandingkan dengan pasien KPKBSK (hari ke-272). Setelah mengontrol variabel-variabel kovariat, tidak terdapat perbedaan kesintasan yang bermakna secara statistik antara pasien KPKSK dan KPKBSK (p > 0,05). Kesimpulan: Studi menunjukkan bahwa kesintasan pasien KPKSK lebih rendah dibandingkan dengan pasien KPKBSK di RSKD; namun secara statistik tidak menunjukkan perbedaan signifikan setelah mengontrol variabel umur, jenis kelamin, stadium klinis, dan penatalaksanaan. ......Background: Lung cancer is a disease with a serious threat in Indonesia. Tumor mass progression is one of the factors influencing the survival of lung cancer patients. Small cell carcinoma (SCLC) shows higher progression compared to non-small cell carcinoma (NSCLC). Several studies have shown that NSCLC patients have a better survival rate than SCLC patients. This study aims to assess the difference in survival rates between SCLC and NSCLC patients at Dharmais Cancer Hospital while controlling for age, gender, clinical stage, and management. Method: This retrospective cohort study involved 949 participants (SCLC and NSCLC) from 2013 to 2017, with follow-up until 2021. Survival rates were analyzed using the Kaplan-Meier method, and the predictor effect was assessed using the Cox proportional hazard model. Results: The survival rate of SCLC patients at Dharmais Cancer Hospital during the period 2013-2017 was lower compared to NSCLC patients. The survival rate in the first year for SCLC patients was 31.21%, and by the third year, all SCLC patients had passed away. For NSCLC patients, the survival rates in the first, third, and fifth years were 45.19%, 23.62%, and 15.92%, respectively. The median survival time for SCLC patients was day 172, which was shorter compared to NSCLC patients (day 272). After controlling for covariate variables, there was no statistically significant difference in survival between SCLC and NSCLC patients (p > 0.05). Conclusion: The study shows that the survival rate of SCLC patients is lower than NSCLC patients at Dharmais Cancer Hospital , but statistically, there is no significant difference after controlling for age, gender, clinical stage, and management.