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All Journal Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Jurnal Kedokteran
Irianiwati Irianiwati
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Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience

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The role of tumor-associated macrophages in breast cancer Irianiwati Irianiwati
Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Vol 43, No 01 (2011)
Publisher : Journal of the Medical Sciences (Berkala Ilmu Kedokteran)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (84.206 KB)

Abstract

Interaction of Tumor-Associated Macrophages (TAMs) with tumor cells gives insights into tumor progression andinto a novel therapeutic strategy. In papillary thyroid cancer, patients with tumors containing TAMs had a betterprognosis than patients without TAMs . In prostatic cancer, the reduced of total TAMs can be used as a novelprognostic marker. In melanoma maligna, high number of TAMs was statistically significant associated with poorresponse to treatment . In breast cancer progression, the role of TAMs is still unclear.Key words: tumor-associated macrophages - breast cancer – angiogenesis - tumor progression - prognosis
The basal membrane destruction in benign prostatic hyperplasia, prostatic intraepithelial neoplasma, and prostatic adenocarcinoma. A study on basal membrane type IV collagens Irianiwati Irianiwati
Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Vol 29, No 01 (1997)
Publisher : Journal of the Medical Sciences (Berkala Ilmu Kedokteran)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.615 KB)

Abstract

Basal membrane (BM), a selective permeable membrane is mainly composed of type IV collagen. A tumor invasion, therefore, may only occur if this membrane is destroyed by an active process of tumor producing proteolytic enzymes. It has been found that prostatic intraepithelial neoplasia (PIN) is a prostatic premalignant lesion. Although both benign prostate hyperplasia (BPH) and prostatic adenocarcinoma required an androgenic hormone for their growth, the correlation between the degree of destruction of basal membranes and BPH, PIN, and prostatic adenocarcinoma should be clarified. This can be studied by observing the continuity of periacinair BM. In order to understand the correlation among prostatic lesions, the BM continuity of 40 paraffin block specimens (15 BPH, 11 PIN, and 14 Prostatic adenocarcinomas) were studied. The BM of these specimens were stained immunohistochemically with MoAB anti human Type IV collagens. The periacinair BM continuity was scored 0-5. The Spearmans correlation test was used to analyze their possible relationship.The result shows that there is a significant correlation between the degree of destruction of basal membranes and BPH, PIN, and Prostatic adenocarcinomas (r = 0.898; p<0.05). In conclusion, based on periacinair BM des-truction, there is a positive correlation between the degree of destruction of basal membranes and BPH, PIN, and prostatic adenocarcinomas.Key words : collagen type IV - prostatic adenocarsinoma - prostatic intrapithelial neoplasia - benign prostate hyperplasia - basal membrane
Ekpresi Sirt1 pada Karsinoma Payudara Tikus yang Diinduksi Dimethylbenz (α) Anthracene dan Hubungannya dengan Derajat Histologis, Ukuran Tumor serta Ekpresi PCNA Novrita Padauleng; Dewajani Purnomosari; Sri Herwiyanti; Harjadi Harjadi; Irianiwati Irianiwati; Sitarina Widyarini
Unram Medical Journal Vol 5 No 2 (2016)
Publisher : Faculty of Medicine Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jku.v5i2.192

Abstract

Latar belakang: Karsinoma payudara terjadi melalui proses kompleks yang melibatkan mutasi serta modifikasi epigenetik. Kontribusi Sirt1 pada modifikasi epigenetik terjadi melalui aktivitas deasetilasi Sirt1 terhadap beberapa gen penekan maupun pemicu pertumbuhan karsinoma, sehingga transkripsi gen-gen tersebut menjadi inaktif. Penelitian ini bertujuan membandingkan ekspresi Sirt1 pada karsinoma payudara tikus yang diinduksi DMBA dengan kelenjar normal, serta melihat ada tidaknya hubungan antara ekspresi Sirt1 dengan derajat histologis, ukuran tumor, dan ekspresi PCNA.Metode: Sebanyak 30 ekor tikus Sprague dawley betina, dibagi menjadi 3 kelompok, yaitu pakan, kontrol vehicle (minyak jagung), dan karsinoma payudara (induksi DMBA). Analisis jaringan payudara menggunakan teknik imunohistokimia untuk protein Sirt1 dan PCNA, serta pengecatan hematoksilin eosin untuk derajat histologis.Hasil: Ekspresi Sirt1 pada karsinoma payudara tikus lebih tinggi secara bermakna dibandingkan ekspresinya di kelenjar payudara normal (26,12 vs 0,05; p=0,004). Ekspresi Sirt1 positif lebih banyak dijumpai pada karsinoma payudara dengan derajat histologis buruk (56,2%), dan tidak dijumpai pada karsinoma payudara dengan derajat histologis baik. Uji statistik menunjukkan hubungan yang sangat bermakna antara ekspresi Sirt1 dengan ukuran tumor (textitp=0,009;r=0,877) dan ekspresi PCNA (p=0,000; r=0,790).Kesimpulan: Protein Sirt1 pada penelitian ini cenderung sebagai pemicu pertumbuhan karsinomapayudara, dan ekspresi Sirt1 positif lebih banyak dijumpai pada karsinoma payudara dengan derajathistologis buruk. Peningkatan ekspresi Sirt1 disertai dengan peningkatan ukuran tumor dan ekspresiPCNA.
Co-Authors Dewajani Purnomosari Harjadi Harjadi Novrita Padauleng Sitarina Widyarini Sri Herwiyanti