Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 3 dokumen yang sesuai dengan query
cover
Mila Maidarti
"ABSTRAK
Nama : Mila maidartiProgram studi : Pendidikan Dokter Spesialis Obstetri dan Ginekologi IIJudul : Pengaruh paclitaxel terhadap pertumbuhan dan perkembangan folikel ovarium mencit in vitro Pada penelitian sebelumnya dilaporkan bahwa pengobatan paclitaxel pada tikus betina tidak mengurangi kesintasan folikel preantral dengan hanya folikel antral yang terpengaruh, sementara penelitian lain secara in vivo melaporkan bahwa paclitaxel juga mempengaruhi folikel preantral. Meskipun, pada penelitian dengan kultur in vitro pada jaringan ovarium paclitaxel menginduksi apoptosis folikel primer, pengaruhnya secara langsung terhadap kultur folikel tunggal belum diketahui. Pada penelitian ini kami melakukan penilaian pengaruh paclitaxel terhadap perkembangan dan pertumbuhan folikel dan maturasi oosit pada mencit jenis BDF-1 usia 14 hari. Sebanyak dua puluh sampai 30 folikel sekunder diameter 100 ndash;130 ?m, diisolasi secara mekanik dari ovarium 3-5 mencit. Folikel dari 8 percobaan yang dilakukan secara independen, dengan 11-26 folikel per kelompok, dikultur secara individual selama 12 hari. Folikel dikultur secara individu dalam medium ?-Minimum essential medium ?-MEM yang ditambahkan rekombinan hormon Follicle stimulating hormone FSH pada suhu 37oC pada atmosfer dengan kelembababan yang cukup dan 5 CO2. Folikel dibagi secara acak kedalam kelompok kontrol dan perlakuan n = 20 folikel/group . Pada kelompok perlakuan folikel dikultur pada medium yang sudah mendapat perlakuan dengan paclitaxel 2.5x10-9 M , yaitu konsentrasi berdasarkan Inhibitory concentration 50 IC 50 kultur sel kanker payudara MCF- 7 dan satu konsentrasi lebih tinggi dan lebih rendah. Setiap hari keempat dari kultur, dilakukan penggantian 30 ?l medium, dan penilaian pertumbuhan, morfologi dan kesintasan folikel. Penilaian terhadap maturasi oosit dilakukan pada akhir kultur, dilanjutkan dengan penilaian imunohistokimia ?-tubulin oosit. Pada kultur yang terpisah, kami juga melakukan penilaian expresi gen apoptosis yang terlibat pada kematian sel terprogram yaitu rtPCR mRNA GDF-9, Bcl2, Bax dan PCNA pada hari ke 4,8 dan 12. Dibandingkan dengan kontrol, penambahan paclitaxel pada medium kultur mengurangi laju pertumbuhan folikel, dan kesintasan folikel antral. Terdapat kecenderungan penurunan jumlah oosit matur pada kelompok perlakuan dengan paclitaxel, namun tidak berbeda bermakna. Paclitaxel menginduksi ekspresi GDF- 9 pada kultur folikel awal. Ekspresi BCl-2 meningkat pada hari ke-8 kultur, sementara ekspresi Bax cenderung konsisten. Begitu juga halnya dengan ekspresi PCNA mRNA, kecuali pada kultur hari ke-12 dimana ekspresinya pada kelompok perlakuan cenderung meningkat dan bermakna secara statistik. Keterbatasan penelitian adalah bahwa penelitian ini dirancang terbatas pada folikel sekunder dan athral, dan tidak memungkinkan penilaian pengaruh paclitaxel terhadap folikel tahap perkembangan lebih awal seperti pada folikelprimordial dan primer. Implikasi yang lebih luas adalah bahwa pada penelitian ini menunjukkan bahwa toksisitas paclitaxel terhadap ovarium terbatas pada folikel matur atau folikel antral. Key words: Paclitaxel, perkembangan folikel, kultur in vitro

ABSTRACT
Name Mila maidarti Study program Subspecialist of Obstetrics and GynecologyTitle Effects of paclitaxel on ovarian follicle growth anddevelopment in vitro It was previously found that paclitaxel treatment in female mice did not reduce pre antral follicles survival with only antral follicles affected, while other in vivo studies reported that paclitaxel also affect pre antral follicles. Though, in ovarian culture, paclitaxel induced apoptosis of the primary follicles, it rsquo s effects on single in vitro follicles culture is not known. In this study, we have investigated the effects of paclitaxel on ovarian follicle development and oocyte developmental competence in prepubertal 14 day old BDF1 female mice. Twenty to 30 early secondary follicles diameter 100 ndash 130 m, were mechanically isolated from an ovary of three to five mice. Follicles from 8 independent experiments, with 11 26 follicles per group, were cultured individually for 12 days. Individual follicles were cultured in alpha minimum essential medium supplemented with recombinant human FSH at 37oC in a humidified atmosphere of 5 CO2 in air. Follicles were randomly assigned into control and experimental groups n 20 follicles group of medium containing paclitaxel with the concentration based on IC 50 breast cancer cell line MCF 7, 2.5x10 9 M and one magnitude lower and higher. Every fourth day, 30 l of the medium was changed, follicular growth, morphology and survival were assessed. Meiotic maturation of the oocytes were analyzed at the end of culture continued by the assessment of immunohistochemistry for tubulin of the oocytes. In separate culture, we investigated the rtPCR mRNA expression of GDF 9, Bcl2, and bax on the day 4, 8, and 12th of culture. Compared with control, paclitaxel treatment reduced follicular growth, and survival rate of the antral follicles p le 0.05 . Decreasing tendency on oocyte maturation was showed in follicles exposed to paclitaxel, but it was not significantly difference. Paclitaxel treatment induced GDF 9 expression in early follicular culture. Bcl2 was up regulated on the day 8 of cultur, while bax expression tended to be consistent p ge 0.05 . PCNA mRNA level was tended to be consistent, except for the day 12 that was higher significantly in paclitaxel group. Limitations and reasons for caution is that this study designed is limited to secondary and athral follicles , it does not allowed the investigation of the early stage follicles development, primordial and primary follicles. Wider implications of the findings that this study indicated that ovarian toxicity of paclitaxel would be confined to the antral follicles. Key words Paclitaxel, follicles development, in vitro culture "
2016
T55647
UI - Tesis Membership  Universitas Indonesia Library
cover
I Dewa Putu Wibisana Wikananda
"

Tanaman Hevea brasiliensis merupakan tanaman yang banyak ditanam di Indonesia, karena lateks yang bernilai ekonomi tinggi. Alternatif metode konvensional budidaya H. brasiliensis adalah dengan metode kultur in vitro. Namun, penelitian kultur in vitro memiliki hambatan berupa rentannya kontaminasi, baik dari eksplan, medium, dan alat bahan yang diapaki. Oleh karena itu, tujuan penelitian ini adalah untuk mengoptimasi dan memilih antara enam jenis sterilan dan kombinasinya yang paling efektif terhadap kontaminasi dalam kultur tangkai daun H. brasiliensis. Hipotesis yang diajukan adalah perlakuan perendaman dengan NaOCl 5,25%, H2O2 20%, dan alkohol 70% selama masing-masing lima menit adalah perlakuan sterilisasi paling efektif dalam menghadapi kontaminasi. Eksplan tangkai daun diberi lima perlakuan dan satu kontrol, yakni kontrol dengan perendaman NaOCl 5,25%, perlakuan 1 dengan perendaman NaOCl 5,25% dan H2O2 20%, perlakuan 2 dengan perendaman NaOCl 5,25% dan alkohol 70%, perlakuan 3 dengan   perendaman NaOCl 5,25% dua kali dan H2O2 20%, perlakuan 4 dengan perendaman NaOCl 5,25%, alkohol 70%, dan H2O2 20%, dan perlakuan 5 dengan perendaman NaOCl 5,25% dua kali dan alkohol 70%.  Empat perlakuan memiliki efektivitas dalam mencegah kontaminasi, yakni perendaman dengan NaOCl 5,25% dan H2O2 20%, perendaman dengan NaOCl 5,25% sebanyak dua kali dan H2O2 20%, perendaman NaOCl 5,25%, alkohol 70%, dan H2O2 20%, serta perendaman NaOCl 5,25% dua kali dan alkohol 70%. Sementara itu, perlakuan NaOCl 5,25% dan alkohol 70% berhasil menahan pencokelatan pada persentase 50% di minggu kedelapan. Oleh karena itu, perlakuan yang lebih baik dalam mengurangi kontaminasi dan pencokelatan adalah perendaman dengan NaOCl 5,25% dan alkohol 70%.


Hevea brasiliensis is a plant that is widely grown in Indonesia, because its latex has high economic value. An alternative to the conventional method of cultivating H. brasiliensis is the in vitro culture method, but this method has a disadvantages, especially its risk to contamination from explant, medium, and tools. So, the aim of this research is to optimize and select between six types of sterilants and their combinations that are most effective against contamination in the culture of H. brasiliensis leaf stalks. The hypothesis proposed is that soaking treatment with 5.25% NaOCl, 20% H2O2 and 70% alcohol for five minutes each is the most effective sterilization treatment in dealing with contamination. Petiole explants were given five treatments and one control, namely control by immersion in 5.25% NaOCl, treatment 1 by immersion in 5.25% NaOCl and 20% H2O2, treatment 2 by immersion in 5.25% NaOCl and 70% alcohol, treatment 3 by soaking in 5.25% NaOCl twice and 20% H2O2, treatment 4 by soaking in 5.25% NaOCl, 70% alcohol and 20% H2O2, and treatment 5 by soaking in 5.25% NaOCl twice and 70% alcohol.  Four treatments were effective in preventing contamination, namely soaking with 5.25% NaOCl and 20% H2O2, soaking twice with 5.25% NaOCl and 20% H2O2, soaking with 5.25% NaOCl, 70% alcohol, and 20% H2O2 %, as well as soaking twice in 5.25% NaOCl and 70% alcohol. Meanwhile, treatment with 5.25% NaOCl and 70% alcohol succeeded in preventing browning at a percentage of 50% in the eighth week. Therefore, a better treatment in reducing contamination and browning is soaking with 5.25% NaOCl and 70% alcohol.

 

"
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2024
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
"An experiment to investigate the somatic embryogenesis from shoot-derived callus of Pogostemon cablin (nilam plant) has been conducted at the Plant Biotechnology Laboratory, Agricultural Faculty, University of Jambi from January through to July 2004. Callus proliferation was induced on explants taken from young shoots cultured on solid MS medium supplemented with phytohormones NAA (0.8, 1.1, 1.4, and 1.7 ppm) and BAP (1.1, 1.4, 1.7, and 2.0 ppm) under in vitro conditions. Cultures were maintained at 25  1 oC, light intensity 50 �?�mol m-2 s-1, and 16 hours photoperiod. The results indicated that all cultured explants showed positive responses on callus proliferation on all treatments within two weeks of culture initiation. The effect of phytohormones, however, was unspecific as all callus showed similar properties, from non-embryogenic to embryogenic. The addition of NAA and/or BAP to the culture medium was not significantly affected the number of days to callus proliferation. Callus fresh weight was significantly affected by NAA (P = 0.01) or BAP (P = 0.05), but the interaction of these phytohormones resulted in a non-significant effect on callus fresh weight (P = 0.18). Also, BAP significantly affected callus dry weight (P =0.03). However, neither NAA nor its interaction with BAP significantly affected callus dry weight (P = 0.07 and 0.16, subsequently). Embryogenic and non-embryogenic callus were subcultured separately onto new fresh media with the same composition as for callus induction. Following this subculture, embryogenic callus regenerated somatic embryos within ten days, whereas non-embryogenic callus did not show any symptom of embryogenesis, and lost their proliferative capacity after six weeks of subculture. The regenerated somatic embryos continued to grow to form profuse mass of young plantlets ready for in vivo acclimatization."
Lembaga Penelitian Universitas Indonesia, 2004
Artikel Jurnal  Universitas Indonesia Library