Judul: Studi Histopatologi Potensi Radioprotektif Ekstrak Kelopak Bunga Rosela (Hibiscus sabdariffa L.) dalam Radiasi Ionisasi Radiodiagnostik Berulang pada Lambung Mencit (Mus musculus
Abstrak: The aim of this study was to determine the radioprotective effect of calyx Roselle (Hibiscus sabdariffa L.) extract in recurrent radiodiagnostic ionizing radiation on the gastric of mice (Mus musculus). Fourty eight adult males of mice were used and divided into 4 groups: control (K-), radiation (K+), roselle without radiation (R-) and roselle with radiation (R+). Mice were treated with 50 mg/kg of body weight orally of Roselle extract every two days prior to recurrent irradiation for 4 and 8 weeks. The mice were euthanized by overdose Ketamine and then necropsied followed gastric collection at various time points after irradiation. Sample of gastric were processed to prepare histopathology slides with Haematoxylin-Eosin stain. The changes on the gastric alterations were studied by count the amount of parietal, chief cells and infiltration of inflammatory cells after whole body irradiation. Quantitative data were analysed with ANOVA test and followed by Duncan test. Radiation during 4 week produce total radiation 2.9 mSv and 8 week produce 5.3 mSv. The result showed that Roselle extract was protect parietal and chief cells from radiation effect by recurrent radiodiagnostic ionizing radiation. Roselle extract also inhibiting inflammation process by decreasing necrosis in parietal and chief cells. Administration of Roselle extract significantly (p<0.05) reduced the bioeffects of radiation. Roselle could be useful as natural radioprotector against ionizing radiation
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Judul: Radioprotective Effect of Rosella Extract (Hibiscus sabdariffa L.) against Recurrent Radiodiagnostic Ionizing Radiation: Study of Leukocytes Differentiation in Mice (Mus musculus)
Abstrak: Tujuan penelitian ini adalah untuk mengetahui efek radioprotektif ekstrak tanaman rosela (Hibiscus sabdariffa L.) terhadap radiasi ionisasi radiodiagnostik berulang melalui studi differensiasi sel leukosit darah perifer pada mencit (Mus musculus). Mencit betina sebanyak 48 ekor dibagi kedalam 4 kelompok yaitu: K- (diberi NaCl fisiologis tanpa radiasi), K+ (diberi NaCl fisiologis dengan radiasi), R- (diberi Ekstrak rosela tanpa radiasi), R+ (diberi Ekstrak rosela dengan radiasi). Mencit diberi ekstrak rosela dengan dosis 50 mg/kg berat badan dan NaCl fisiologis dengan volume 0.2 ml/ekor/2 hari sebelum pemaparan radiasi. Radiasi ionisasi dilakukan dengan dosis 0,2 mSv/paparan/2 hari selama 4 & 8 minggu pada berkas sinar utama. Pengambilan darah perifer dilakukan pada setiap kelompok pada minggu ke-0 (sebelum perlakuan), 2, 4, 6 & 8. Pengambilan data pemulihan selama 30 hari setelah minggu 4 dan 8 tanpa paparan radiasi. Hasil penelitian menunjukkan paparan radiasi dapat meningkatkan persentase netrofil band meningkat, netrofil adult, migrasi limfoblas, dan mieloblas serta menurunkan persentase monosit dan limfosit pada jaringan darah perifer. Pemberian ekstrak rosela dapat meningkatkan persentase limfosit dan monosit serta menurunkan persentase netrofil band, netrofil adult, limfoblas, dan mieloblas. Dari hasil penelitian didapatkan bahwa ekstrak tanaman rosela (Hibibscus sabdariffa L.) memiliki efek radioprotektif terhadap radiodiagnostik berulang pada sel leukosit darah perifer mencit (Mus musculus)
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Judul: Basis of Social Theories for Social Enterprises: Integrative Literature Review
Abstrak: Social enterprise is a hybrid organization aiming to achieve economic and social values that exist as an effective mechanism for creating value in the form of society, economy and environment. The development of social enterprise is considered to have contributed in increasing innovation as well as being a mechanism for ensuring economic development that is in line with social justice. However, the development of theory and study of social enterprise is still lagging behind in practice. The social enterprise conception is a conception that is still considered as a "young term" category in the social sciences and has not shown clear consistency linking social theories to the development of social enterprise. This study aims to identify the basic theories of social enterprise and social theories for social enterprise with used an integrated literature review approach with data sources from Scopus and ProQuest. The results of the study found that socio-economic theory is the basis for social enterprise theory. This study also found the linkages of 7 social theories for social enterprise and the mapping of social theory architecture for social enterprise which is studied on classical and contemporary social theories.
Keyword: integrative literature review, social economic, social enterprise, social theory