UPDATE BREAST CANCER MANAGEMENT DIAGNOSTIC AND TREATMENT

UPDATE BREAST CANCER MANAGEMENTDIAGNOSTIC AND TREATMEN

HDAC2 and PCNA expression is correlated to decreasing of endoxifen sensitivity in human breast cancer stem cells ALDH+

Latar belakang: Sel punca kanker payudara (breast cancer stem cells/BCSC) adalah subpopulasi sel kanker yang memiliki kemampuan menghasilkan tumor baru dan bersifat seperti sel punca. Penelitian kami sebelumnya menggunakan jaringan kanker payudara mengungkapkan bahwa ekspresi gen histone deacetylase 2 (HDAC2) dan proliferating cell nuclear antigen (PCNA) ditemukan perbedaan signifikan setelah terapi neoajuvan hormon dan kemoterapi. Penelitian ini bertujuan untuk menganalisis hubungan antara ekspresi HDAC2 dan PCNA dengan kelangsungan hidup sel punca kanker payudara dengan penanda aldehyde dehydrogenase + (ALDH+) yang diberi perlakuan endoksifen. Metode: Sampel adalah BCSC primer manusia ALDH+ yang diberi perlakuan endoksifen 4 uM masingmasing selama 2, 4, 6, 8, 10, 12, 14 hari. Viabilitas sel dilihat dengan menggunakan trypan blue dan ekspresi mRNA HDAC2 dan PCNA ditentukan menggunakan qRT-PCR. Hasil: Viabilitas BCSCs ALDH + menurun setelah 2 sampai 4 hari pemberian endoksifen. Pada periode ini juga didapatkan ekspresi mRNA HDAC2 dan PCNA mengalami penurunan. Tetapi setelah pemberian endoksifen selama 8 hari, viabilitas BCSCs ALDH + mengalami peningkatan dan ditemukan peningkatan yang signifikan pada hari ke-14 pemberian endoksifen. Ekspresi mRNA HDAC2 dan PCNA juga menunjukkan peningkatan mulai pada hari ke-8 dan terus meningkat hingga hari ke-14 pemberian endoksifen. Penelitian ini menunjukkan pola yang sama antara ekspresi mRNA HDAC2 dan PCNA dan viabilitas sel. Kesimpulan: Induksi endoksifen yang lama menurunkan sensitivitas efek endoksifen pada BCSC manusia dan ekspresi HDAC2 dan PCNA berkorelasi dengan viabilitas BCSC manusia setelah induksi endoksifen. (Health Science Journal of Indonesia 2019;10(2):77-81) Kata kunci: sel punca kanker payudara, viabilitas sel, HDAC2, PCNA, endoksifen   Abstract Background: Breast cancer stem cells (BCSCs) are subpopulation of cancer cells that has the ability to generate new tumor and similar properties to stem cell. Our previous study using breast cancer patients revealed that gene expression of histone deacetylase 2 (HDAC2) and proliferating cell nuclear antigen (PCNA) were significantly altered after neoadjuvant hormone and chemotherapy. This study aimed to analyze the correlation between HDAC2 and PCNA expressions with the viability of breast cancer stem cells aldehyde dehydrogenase + (BCSC ALDH+) treated by endoxifen. Method: Samples are human primary BCSCs ALDH+ that treated with 4 uM of endoxifen for 2, 4, 6, 8, 10, 12, 14 days, respectively. Cell viability was measured using trypan blue exclusion assay and the mRNA expressions of HDAC2 and PCNA were determined using qRT-PCR. Results: The viability of BCSCs ALDH+ was decreased after 2 days until 4 days-endoxifen treatment. It also demonstrated that mRNA expression of HDAC2 and PCNA were decreased in this period. But after 8 days endoxifen treatment, the viability of BCSCs ALDH+ was increased. The increasing of viability was higher in 14 days-endoxifen treatment. The mRNA expression of HDAC2 and PCNA also showed increasing begin on 8 days and continued to increase until 14-days endoxifen treatment. We found a similar pattern between HDAC2 and PCNA expression and cell viability. Conclusion: Prolonge endoxifen treatment decrease sensitivity of endoxifen effect in human BCSC and the expression of HDAC2 and PCNA are correlated to human BCSCs viability after endoxifen treatment. (Health Science Journal of Indonesia 2019;10(2):77-81) Keywords: human breast cancer stem cells, viability, HDAC2, PCNA, endoxife

Meningkatkan Hasil Belajar Siswa Melalui Penggunaan Metode Demonstrasi Pada Mata Pelajaran IPA Kelas IV SDN Rontojali

Permasalahan dalam penelitian ini yaitu “Apakah metode Demonstrsi dapat meningkatkan hasil belajar siswa pada mata pelajaran IPA di kelas IV di SDN Rontojali?. Penelitian ini adalah penelitian tindakan kelas (Classroom Action Research) yang bertujuan  untuk  meningkatkan hasil belajar siswa kelas IV melalui metode demonstrasi pada mata pelajaran IPA di SDN Rontojali. Penelitian ini adalah penelitian tindakan kelas yang terdiri dari 2 siklus . Data yang diambil dari penelitian ini adalah data kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa dalam pembelajaran demonstrasi dapat meningkatkan hasil belajar siswa. Hal ini dapat dilihat dari hasil penelitian siklus I diperoleh persentase ketuntasan belajar 56,3 % dan pada siklus II mengalami kenaikan persentase ketuntasan belajar yaitu 81,3 %

The Changes of Amino Terminal Pro B-type Natriuretic Peptide (NT-proBNP) Concentration and Left Ventricular Ejection Fraction on Doxorubicin Chemotherapy Patients

Introduction. Cancer patients who received chemotherapy regimen containing doxorubicin has been known to have serious side effect in heart, called as cardiotoxicity. The measurement of NT-proBNP proposed to be used as a new parameter to identify and evaluate cardiotoxicity in cancer patients earlier before it has been manifested, superior than measurement of left ventricle ejection fraction (LVEF). The aims of this study to examine the changes of NT-proBNP concentration and LVEF on patients with cancer who receive chemotherapy regimen containing doxorubicin. Methods. The study used pre and post test design to observe the changes of NT-proBNP concentration and LVEF on the patients who receive naïve doxorubicin chemotherapy and after chemotherapy-cycle I to cyce IV at the Ciptomangunkusumo hospital, Jakarta. Echocardiography and NT-proBNP were examined on naïve chemotherapy and after chemotherapy each cycle. Statistical analysis was performed by using two way Anova and Friedman nonparametric test. Results. During the period of October 2007 to June 2008, a total of 29 consecutive patiets receiving doxorubicin chemotherapy regimen CHOP (Cyclophosphamide, doxorubicin, Vincristine, Prednisone and FAC-5 Fluorouracil, doxorubicin, Cyclophosphamide) were collected. The increase of median NT-proBNP concentration between naïve chemotherapy and: post chemotherapy cycle I was 32 pg/mL (12,5-124,6 pg/mL), post chemotherapy cycle II was 135 pg/mL (44-275,2 pg/mL), post chemotherapy cycle III was 275,1 pg/mL (97,8-907,2 pg/mL), post chemotherapy cycle IV was 514,6 pg/mL (80,6-6458,2 pg/mL). With Friedman test, p< 0,000. With Anova two way test, it was found the difference between naïve LVEF and LVEF: post chemotherapy cycle I was 5,1% (p 0,000), post chemotherapy cycle II 8,9% (p 0,000), post chemotherapy cycle III 11,2% (p 0,000), post chemotherapy cycle IV 12,5% (p 0,000). Conclusions. Elevated NT-proBNP concentration and LVEF reduction had been observed in doxorubicin chemotherapy patients

Deteksi Dini kanker

viii, 149 hal.; ill.; 23c

Kedaruratan non bedah dan bedah/ Editor: Muchlis Ramli

viii, 196 hal.; 24 c

Kedaruratan non bedah dan bedah/ Editor: Muchlis Ramli

viii, 196 hal.; 24 c

Kedaruratan non bedah dan bedah/ Editor: Muchlis Ramli

viii, 196 hal.; 24 c

Kedaruratan non bedah dan bedah/ Editor: Muchlis Ramli

viii, 196 hal.; 24 c

Kedaruratan non bedah dan bedah/ Editor: Muchlis Ramli

viii, 196 hal.; 24 c