Hasil Pencarian  ::  Simpan CSV :: Kembali

"[ABSTRAKPendahuluan: Sel punca mesenkimal (SPM) sebagai salah satu alternatif terapi kasus sulit dapat diperoleh dari jaringan adiposa. Kemampuan SPM dalam rekayasa jaringan membutuhkan prosedur implantasi SPM yang aman dan bebas kontaminasi. Tindakan minimal invasive pada kasus cedera medulla spinalis dengan terapi implantasi SPM dapat menyebabkan sel tersebut terpajan radiasi sinar-x c-arm. Viabilitas dan waktu penggandaan populasi (WPP) merupakan salah satu komponen utama keberhasilan prosedur implantasi tersebut. Penelitian ini bertujuan mengetahui efek pajanan sinar-x c-arm terhadap viabilitas dan WPP SPM.Metode: Penelitian ini adalah penelitian eksperimental SPM jaringan adiposa pasca cryopreservation. Sel punca pasca thaw dan propagasi kemudian dilakukan pajanan radiasi sinar-x dengan c-arm. Sel punca kemudian di kultur untuk menilai viabilitas dan waktu penggandaan populasi. Uji Generalized Linear Model untuk menilai perbedaan viabilitas antara besar dosis radiasi. Uji Spearman menilai korelasi perbedaan viabilitas kelompok pasca-radiasi, dan pasca radiasi dan kultur. Uji Kruskall-Wallis menilai WPP kelompok pasca-radiasi antara masing-masing besar dosis. Uji Wilcoxon menilai WPP antara kelompok pre-radiasi dengan kelompok pasca-radiasi.Hasil: Waktu konfluensi kultur sel pasca radiasi rata-rata 4.33 hari. Rerata perbedaan viabilitas antara besar dosis radiasi tidak terdapat perbedaan yang bermakna secara statistik (p>0.05). Didapatkan korelasi positif viabilitas pasca radiasi dengan besar dosis radiasi namun tidak bermakna secara statistik (p>0.05) namun didapatkan korelasi negatif viabilitas pasca radiasi dan kultur dengan besar dosis radiasi dan bermakna secara statistik. Tidak didapatkan perbedaan bermakna median WPP antara kelompok pre-radiasi dan pasca-radiasi (p>0.05) dan perbedaan WPP diantara kelompok pasca radiasi (p>0.05).Kesimpulan: Tidak terdapat perbedaan secara statistic viabilitas dan WPP SPM jaringan adiposa pasca pajanan radiasi sinar-x c-arm sampai sampai dosis radiasi 32.34 mSv.

---

ABSTRACTIntroduction. The use of adipose tissue derived mesenchymal stem cells (MSCs)in tissue engineering require implantation procedure that is safe and free of contamination. Minimally invasive procedure in the case of spinal cord injury using a c-arm device for MSC implantation causes x-ray exposure to the implanted cells. Viability and population doubling time (PDT) is a major component of the success of the implantation procedure. This study aims to determine the effect of c-arm x-ray exposure on MSC viability and PDT.Methods. This was an experimental study that used cryopreserved adipose tissue derived MSCs. Cells were thawed, propagated, and exposed to varying doses of c-arm x-ray radiation. Stem cell viability was measured, and then the cells were cultured to assess their PDT. Generalized linear models test was used to compare cell viability between post-thaw, post-propagation, post-radiation, post-culture post-radiation, and control and between radiation dose groups. Kruskal-Wallis test assessed PDT between various radiation doses in post-radiation groups. Wilcoxon test assessed PDT between pre-radiation and post-radiation groups.Results. Mean confluence period of adipose MSCs post radiation was 4.33 days. There was no statistically significant difference in MSC mean viability after exposure to x-ray radiation between each group and control (p>0.05). There was no significant positive correlation between post radiation viability and radiation dose (p > 0.05), however, there was significant negative correlation between post radiation post culture viability and radiation dose. There were no significant differences in PDT between pre- and post-culture post radiation groups and between various radiation doses in post-radiation groups (p>0.05).Conclusion. No statistical differences in MSC viability and PDT after x-ray radiation exposure of c-arm up to 32.34 mSv;Introduction. The use of adipose tissue derived mesenchymal stem cells (MSCs)in tissue engineering require implantation procedure that is safe and free of contamination. Minimally invasive procedure in the case of spinal cord injury using a c-arm device for MSC implantation causes x-ray exposure to the implanted cells. Viability and population doubling time (PDT) is a major component of the success of the implantation procedure. This study aims to determine the effect of c-arm x-ray exposure on MSC viability and PDT.Methods. This was an experimental study that used cryopreserved adipose tissue derived MSCs. Cells were thawed, propagated, and exposed to varying doses of c-arm x-ray radiation. Stem cell viability was measured, and then the cells were cultured to assess their PDT. Generalized linear models test was used to compare cell viability between post-thaw, post-propagation, post-radiation, post-culture post-radiation, and control and between radiation dose groups. Kruskal-Wallis test assessed PDT between various radiation doses in post-radiation groups. Wilcoxon test assessed PDT between pre-radiation and post-radiation groups.Results. Mean confluence period of adipose MSCs post radiation was 4.33 days. There was no statistically significant difference in MSC mean viability after exposure to x-ray radiation between each group and control (p>0.05). There was no significant positive correlation between post radiation viability and radiation dose (p > 0.05), however, there was significant negative correlation between post radiation post culture viability and radiation dose. There were no significant differences in PDT between pre- and post-culture post radiation groups and between various radiation doses in post-radiation groups (p>0.05).Conclusion. No statistical differences in MSC viability and PDT after x-ray radiation exposure of c-arm up to 32.34 mSv, Introduction. The use of adipose tissue derived mesenchymal stem cells (MSCs)in tissue engineering require implantation procedure that is safe and free of contamination. Minimally invasive procedure in the case of spinal cord injury using a c-arm device for MSC implantation causes x-ray exposure to the implanted cells. Viability and population doubling time (PDT) is a major component of the success of the implantation procedure. This study aims to determine the effect of c-arm x-ray exposure on MSC viability and PDT.Methods. This was an experimental study that used cryopreserved adipose tissue derived MSCs. Cells were thawed, propagated, and exposed to varying doses of c-arm x-ray radiation. Stem cell viability was measured, and then the cells were cultured to assess their PDT. Generalized linear models test was used to compare cell viability between post-thaw, post-propagation, post-radiation, post-culture post-radiation, and control and between radiation dose groups. Kruskal-Wallis test assessed PDT between various radiation doses in post-radiation groups. Wilcoxon test assessed PDT between pre-radiation and post-radiation groups.Results. Mean confluence period of adipose MSCs post radiation was 4.33 days. There was no statistically significant difference in MSC mean viability after exposure to x-ray radiation between each group and control (p>0.05). There was no significant positive correlation between post radiation viability and radiation dose (p > 0.05), however, there was significant negative correlation between post radiation post culture viability and radiation dose. There were no significant differences in PDT between pre- and post-culture post radiation groups and between various radiation doses in post-radiation groups (p>0.05).Conclusion. No statistical differences in MSC viability and PDT after x-ray radiation exposure of c-arm up to 32.34 mSv]"

"Sel Punca Hematopoietik (SPH) memiliki potensi sebagai terapi regeneratif. Kriopreservasi umumnya dilakukan untuk menjaga kualitas SPH dari darah tali pusat. Larutan DMSO 10% adalah agen krioprotektan intraseluler standar dalam kriopreservasi SPH. Namun, DMSO bersifat toksik bagi sel pada suhu ruang dan pasien selama transplantasi. Oleh karena itu, konsentrasi DMSO perlu dikurangi dengan menambahkan krioprotektan ekstraseluler, seperti sukrosa atau madu sumbawa. Penelitian ini bertujuan untuk membandingkan kemampuan madu Sumbawa dan sukrosa sebagai krioprotektan ekstraseluler dalam melindungi SPH CD34+ selama kriopreservasi. Penelitian ini menggunakan desain eksperimental in vitro dengan tiga perlakuan medium kriopreservasi dan tujuh ulangan. Tiga perlakuan medium kriopreservasi terdiri atas DMSO 10% sebagai kontrol, DMSO 5% + madu Sumbawa 5%, dan DMSO 5% + sukrosa 5%. SPH CD34+ ditempatkan di Mr. Frosty dan disimpan dalam freezer pada suhu -80°C. SPH CD34+ dicairkan setelah 48 – 72 jam dan dilakukan analisis kualitas yang terdiri atas viabilitas, morfologi, dan stabilitas fenotipe. Hasil penelitian menunjukkan bahwa kombinasi krioprotektan DMSO 5% + madu sumbawa 5% berpengaruh positif dan memiliki perbedaan nyata (P<0,05) dibandingkan dengan DMSO 5% + sukrosa 5% terhadap viabilitas dan morfologi SPH. Namun, ratarata penurunan stabilitas fenotipe yang ditunjukkan dengan penurunan persentase CD34+ pada kontrol DMSO 10% (6,90 ± 8,60), DMSO 5% + sukrosa 5% (10,60 ± 9,20), dan DMSO 5% + madu sumbawa 5% (8,60 ± 11,50) tidak berbeda nyata (P>0,05). Kesimpulannya, kombinasi DMSO 5% + madu sumbawa 5% berpengaruh positif terhadap viabilitas dan morfologi HSC tetapi tidak terhadap stabilitas fenotipe.

---

Hematopoietic Stem Cells (HSC) have potential as regenerative therapy. Cryopreservation was commonly practiced to preserve the quality of HSC from umbilical cord blood. DMSO 10% was standard intracellular cryoprotectant agents (CPAs) in HSC cryopreservation. However, DMSO is toxic to cells at room temperature and patients during transplantation. Therefore, the concentration of DMSO needs to be reduced by adding extracellular CPAs, such as sucrose or sumbawa honey. The objective of this study was to compare the ability of sumbawa honey and sucrose as extracellular CPAs to protect the HSC CD34+ during cryopreservation. The study used an experimental in vitro design with three treatments of cryopreservatin medium and seven replications. Three treatments of cryopreservatin medium consisted of DMSO 10% as a control, DMSO 5% + Sumbawa honey 5%, and DMSO 5% + sucrose 5%. HSC CD34+ in cryo medium was placed in Mr. Frosty and stored in the freezer at -80°C. HSC CD34+ were thawed after 48 – 72 hours and performed a quality analysis consisting of viability, morphology, and phenotype stability. The results showed that the cryoprotectant combination DMSO 5% + sumbawa honey 5% has positive effect and significant difference (P<0,05) compared with DMSO 5% + sukrosa 5% on the viability and morphology of HSC. However, the average decreasing phenotype stability as showed by decrease in percentage CD34+ in the DMSO 10% (6,90 ± 8,60), DMSO 5% + sukrosa 5% (10,60 ± 9,20), and DMSO 5% + madu 5% (8,60 ± 11,50) showed no significant difference (P>0,05). In conclusion, combination DMSO 5% + sumbawa honey 5% has positive effect on the viability and morphology of HSC but not on phenotype stability."

"ABSTRAKPendahuluan. Sel punca mesenkimal merupakan salah satu alternatif pengobatan yang menjanjikan, termasuk dibidang orthopedi. Sumsum tulang masih menjadi pilihan utama sumber sel punca mesenkimal, namun dikarenakan jumlah sel punca mesenkimal yang sedikit, prosedur pengambilan yang invasif dan nyeri, jaringan adiposa mulai digunakan sebagai alternatif dengan kemampuan yang sebanding. Tindakan minimal invasive pada implantasi sel punca pada kasus tulang belakang membutuhkan alat bantu image intensifier C-arm yang menyebabkan sel punca teradiasi sinar X. Penelitian ini bertujuan mengetahui efek pajanan sinar-x c-arm terhadap viabilitas dan potensi osteogenik sel punca mesenkimal dan membandingkan antar kelompok donor. Bahan dan Metode. Penelitian ini merupakan penelitian eksperimental yang dilaksanakan di UPT-TK Sel Punca RSCM januari 2016-februari 2017 . Sampel penelitian adalah sel punca mesenkimal jaringan adiposa dan sumsum tulang pasca kriopreservasi. Sel punca pasca thawing dan propagasi dilakukan pajanan sinar X C-arm dengan berbagai dosis yang dilakukan di Instalasi Bedah Pusat RSUPN Ciptomangunkusumo. Sel punca lalu dikultur dan dilakukan diffenrensiasi osteogenik. Peneliti melakukan analisis viabilitas, waktu penggandaan populasi dan potensi osteogenik dengan pewarnaan alizarin red. Seluruh data dianalisis dengan SPSS 20. Hasil. Tidak terdapat perbedaan viabilitas sel punca mesenkimal jaringan adiposa dan sumsum tulang pre radiasi, pasca radiasi serta pasca radiasi dan kultur pada dosis radiasi yang sama p>0,05 . Tidak terdapat perbedaan potensi osteogenik yang bermakna antara sel punca mesenkimal jaringan adiposa dan sumsum tulang p>0,05 . Terdapat penurunan waktu penggandaan populasi sel punca mesenkimal jaringan adiposa pada dosis radiasi > 5,94 mSv. Kesimpulan. Viabilitas dan potensi osteogenik sel punca mesenkimal sumsum tulang dan jaringan adiposa tidak dipengaruhi oleh paparan sinar X hingga 15,30 mSv. Sel punca mesenkimal jaringan adiposa menunjukkan waktu penggandaan populasi yang lebih pendek pada dosis yang lebih besar. Sel punca mesenkimal jaringan adiposa dan sel punca mesenkimal sumsum tulang memiliki potensi osteogenik yang sebanding

---

ABSTRACTIntroduction. Mesencymal stem cells MSCs is a promising alternative treatment in medicine, including in orthopedic. Bone marrow is still the main source for MSCs. Because of relative less stem cell number, limited source, pain and invasive procedure to obtain the bone marrow, adipose tissue is also considered as a valuable source of MSCs with equal potency. Minimally invasive MSC injections in spine need image intensifier C arm as guidance that potentially influence the cell viability and osteogenic potency. The aim of this study is to evaluate the radiation effects from C arm on the viability and osteogenicity among two types of MSCs. Material and Methods. This experimental study was held on Stem Cell Medical Technology Integrated Service Unit Cipto Mangunkusumo Hospital January 2016 February 2017 . Study samples were Adipose Tissue derived MSCs AT MSCs and Bone Marrow MSCs BM MSCs , which had undergone cryopreservation. After thawing and propagation process, we gave x ray radiation with a variety of doses to MSCs at the Operation Theater Cipto Mangunkusumo Hospital. After the radiation, MSCs was took back to the laboratory for culture and osteogenic differentiation. Author analyzed the viability, population doubling time, and osteogenic potential by alizarin red stain. All data were analyzed using SPSS 20. Results. There was no significant difference among MSCs groups in term of cell viability before radiation, after radiation, and after radiation and culture p 0.05 . There was also no significant difference of the osteogenic potential between the two MSCs groups p 0.05 . However, there was a reduction in population doubling time of AT MSCs radiated with more than 5.94mSv radiation dose. Conclusions. Viability and osteogenic potential of either AT MSCs or BM MSCs were not affected by x ray radiation up to 15.3 mSV. AT MSCs showed a shorter population doubling time when given larger radiation dose. AT MSCs and BM MSCs had equal osteogenic potency. "

"Penelitian ini bertujuan untuk mengetahui viabilitas sel punca sum-sum tulang manusia setelah dipapar larutan ekstrak scaffold HA/alginat (30/70) atau scaffold HA/alginat/kitosan (30/50/20) selama 24, 48, atau 72 jam. Larutan ekstrak scaffold diuji dengan MTT. Hasil viabilitas sel pada pemaparan 24, 48, atau 72 jam scaffold HA/alginat secara berurutan 78,3±7,90%, 69,4±10,63%, 80,6±10,89%, sedangkan pada scaffold HA/alginat/kitosan secara berurutan 94,2±10,55%, 81,8±13,91%, 96,7±16,28%. Pada waktu pemaparan 24 jam, viabilitas sel antara scaffold HA/alginat dan scaffold HA/alginat/kitosan berbeda bermakna (p<0,05). Viabilitas sel scaffold HA/alginat/kitosan secara signifikan lebih tinggi dibandingkan dengan viabilitas sel scaffold HA/alginat pada waktu pemaparan 24 jam.

---

This study aims to determine the viability of human bone marrow stem cells after exposed to the extract solution of HA/alginate (30/70) or HA/alginate/chitosan (30/50/20) scaffolds. The cell viability was evaluated by MTT assay. The cell viability of HA/alginate scaffold on 24, 48, or 72 hour is 78.3±7.90%, 69.4±10.63%, and 80.6±10.89%, respectively, while the cell viability of HA/alginate/chitosan scaffold is 94.2±10.55%, 81.8±13.91%, and 96.7±16.28%, respectively. The cell viability obtained from the HA/alginate and HA/alginate/chitosan scaffold in 24 hour is significantly different (p<0.05). The cell viability of HA/alginate/chitosan scaffold is significantly higher than that of the HA/alginate scaffold in 24 hour."

"[Latar Belakang: Perawatan endodontik regeneratif merupakan perawatan yang bertujuan untuk mencapai kesembuhan biologis yaitu regenerasi jaringan pulpa. Aspek penting dari perawatan ini adalah disinfeksi dengan bahan irigasi dan obat saluran akar. Umumnya, obat saluran akar yang digunakan adalah triple antibiotic paste (TAP), kalsium hidroksida (Ca(OH)2), dan Ledermix®. Oleh karena itu penelitian ini dilakukan untuk dapat mengetahui efek TAP, Ca(OH)2, dan Ledermix® terhadap sel punca mesenkim pulpa (DPSC) Metode: DPSC dikultur dan sel yang positif terhadap STRO-1 melalui uji imunofluoresens, diberi perlakuan kontak langsung dengan TAP, Ca(OH)2, dan Ledermix berkonsentrasi 0.1 mg/ml dan 1 mg/ml. Viabilitas DPSC dihitung dengan uji MTT. Hasil: Viabilitas sel pada kelompok perlakuan menunjukkan penurunan yang bermakna secara statistik, dan yang paling toksik adalah Ledermix. Kesimpulan: Ketiga obat saluran akar dapat menyebabkan penurunan viabilitas sel punca mesenkim pulpa. Namun, obat saluran akar yang memiliki efek paling tidak toksik adalah TAP dan Ca(OH)2. , Background: The goal for regenerative endodontic therapy is biological healing of pulp tissue. The procedure consists of disinfection with irrigants and medicaments. Medicaments that used recently today is triple antibiotic paste (TAP), calcium hydroxide (Ca(OH)2), dan Ledermix®. Therefore, the purpose of this study is to evaluate the effect of TAP, Ca(OH)2, and Ledermix® on viability of dental pulp stem cells (DPSC) Methods: Primary cultures of DPSC taken from immature third molars. DPSC was detected by STRO-1 marker using immunofluorescence assay. Cells were exposed to TAP, Ca(OH)2, and Ledermix® with concentration of 0.1 mg/ml dan 1 mg/ml. Cell viability was analyzed using MTT assay. Results: There were significant differences from the viability of group with medicaments that demonstrated decreased viability compared to controls (P < 0.05). Conclusion: All of the medicaments causes decreased viability on DPSC. Medicaments that have the most toxic effect is Ledermix®. ]"

"Latar Belakang : Diferensiasi sel punca mesenkimal (SPM) menjadi osteoblas dan pertumbuhannya pada lingkungan mikroskopis yang terpajan debris bakteri Mycobacterium tuberculosis secara in vitro tidak menunjukkan gangguan berarti. SPM memiliki potensi imunomodulator dan membantu memperbaiki jaringan yang rusak. Penelitian ini bertujuan untuk mendapatkan pemahaman mengenai manfaat SPM pada eradikasi infeksi, pembentukan tulang dan fusi lesi tulang belakang.Metode : Penelitian ini merupakan penelitian eksperimental pada hewan kelinci yang dilaksanakan dalam 2 tahap. Pada tahap pertama dua puluh tujuh ekor kelinci diinokulasi bakteri Mycobacterium tuberculosis pada korpus vertebra T12. Pengamatan dilakukan terhadap berat badan, suhu badan, populasi Th1, Th2 dan rasio Th1/Th2, keberadaan bakteri serta reaksi jaringan. Pada tahap kedua kelinci yang diinokulasi bakteri Mycobacterium tuberculosis dijadikan sebagai sampel dan dilakukan prosedur tata laksana total Subroto Sapardan, penambahan skafold, penambahan SPM dan pemberian obat anti tuberkulosis. Dengan mengeluarkan kelinci yang tidak memenuhi syarat diperoleh masing-masing 7 kelinci kelompok transplantasi SPM dan kelompok kontrol. Pengamatan dilakukan terhadap berat badan, suhu badan, populasi Th1, Th2 dan rasio Th1/Th2, keberadaan bakteri, reaksi jaringan, ekspresi CBFA-1, sekresi OPN, sekresi ALP, hitung osteoblas, hitung osteosit, kadar kalsium lesi, pembentukan tulang per mm2 defek, dan uji pergerakan tulang.Hasil : Pada tahap pertama diperoleh 100 % kelinci spondilitis tuberkulosis berdasarkan pemeriksaan histopalogi. Pada tahap kedua diperoleh persentase normalisasi pemeriksaan BTA positif pada kelompok SPM (1/1) lebih banyak dibandingkan kelompok kontrol (1/2). Persentase pemeriksaan ALP positif pada kelompok SPM (7/7) lebih banyak dibandingkan kelompok kontrol (5/7). Rerata pembentukan tulang per mm2 defek pada kelompok SPM (1,98 mm2) lebih besar dibandingkan kelompok kontrol (0,88 mm2) (p<0,05). Persentase kelinci yang mengalami fusi pada kelompok SPM (29 %) lebih banyak dibandingkan kelompok kontrol (0 %).Simpulan : Transplantasi SPM ke dalam defek lesi spondilitis tuberkulosis meningkatkan eradikasi infeksi, terbentuknya tulang baru dan capaian fusi tulang belakang.

---

Backgrounds: Mesenchymal stem cell (MSC) differentiation and growth to osteoblast in micro environment exposed with Mycobacterium tuberculosis debris did not show significant effect in vitro. MSC has immunomodulatory potency and helps repairing damaged tissues. This research aims to understand MSC benefits on infection eradication, bone formation and spinal lesion fusion.

Methods: Two steps of experimental research were done using rabbit as a model on this research. At the first step, twenty seven rabbits were inoculated with Mycobacterium tuberculosis on T12 vertebral body. Rabbit's weight, temperature, Th1 and Th2 population with Th1/Th2 ratio, bacteria's existence, and tissue reactions were examined. On the second step, the rabbits previously inoculated with Mycobacterium tuberculosis were used. Rabbits were not eligible for second step experimental were excluded and 7 rabbits were finally used for each MSC transplantation group and the control group. Observation on the weight, temperature, Th1 and Th2 population with Th1/Th2, bacteria's existence, tissue reactions, core binding factor alfa -1 (CBFA-1)expression, osteopontin (OPN) secretion, alkaline phosphatase (ALP) secretion, osteoblast count, osteocytes count, calcium intralesion level, bone formation per milimeter square defect, and bone movement test were done.

Results: On the first step, 100 % rabbits with spondylitis tuberculosis were yielded based on positive histologic test. On the second step, positive percentage on Acid Fast Bacilli (AFB) test was higher on MSC group (1/1) compared to control group (1/2). Positive ALP percentage on MSC group was also higher (7/7) than control group (5/7). Mean bone formation per milimeter square of defect on the MSC group (1.98 mm2) was larger than the control group (0.88 mm2) (p<0.05). Number of rabbit underwent fusion were higher in the MSC group (29 %) than the control group (0 %).

Conclusion: MSC transplantation on spondylitis tuberculosis lesion defect could increase the eradication of infection, new bone formation and spinal fusion outcome"

"Pendahuluan. Sel punca mesenkimal merupakan jawaban untuk berbagai penyakit, termasuk orthopedi. Meskipun jumlah terbatas, prosedur invasif, nyeri, dan sel yang relatif sedikit, sumsum tulang masih menjadi sumber utama. Adiposa menjadi alternatif menjanjikan dengan kemampuan sebanding. Dengan meningkatnya harapan hidup, jumlah pasien tua meningkat dan menjadi sangat potensial untuk aplikasi sel punca. Namun, timbul kontroversi mengenai kualitas sel punca pada penuaan. Metode Penelitian. Penelitian dilakukan di Unit Pelayanan Terpadu Teknologi Kedokteran Sel Punca Rumah Sakit Cipto Mangunkusumo-Fakultas Kedokteran Universitas Indonesia, Jakarta sejak Oktober 2015 - Maret 2016. 12 subjek dibagi menjadi tiga kelompok usia; 15-30 tahun, 31-40 tahun, dan 41-55 tahun dan dilakukan pengambilan sumsum tulang krista iliaka posterior dan adiposa, kemudian dilakukan isolasi dan kultur sel punca mesenkimal. Peneliti melakukan analisis karakteristik biologis, waktu penggandaan populasi, diferensiasi osteogenik, dan pewarnaan Alizarin. Seluruh data dianalisis dengan SPSS 20. Temuan Penelitian. Karakteristik biologis dan pewarnaan Alizarin Red menunjukkan tidak ada perbedaan bermakna sel punca mesenkimal sumsum tulang dan adiposa pada kelompok usia sama(p>0,05). Waktu penggandaan populasi menunjukkan adanya perbedaan signifikan sel punca mesenkimal sumsum tulang dan adiposa pada kelompok 31-40 tahun(p=0,028) dan 41-55 tahun(p=0,035). Kesimpulan. Sel punca mesenkimal adiposa menunjukkan karakteristik biologis, waktu penggandaan populasi, dan diferensiasi osteogenik yang konstan. Sel punca mesenkimal sumsum tulang menunjukkan waktu penggandaan populasi yang menurun seiring usia, berbeda dengan karakteristik biologis dan diferensiasi osteogenik. Adiposa dapat menjadi pilihan sumber sel punca mesenkimal pada setiap golongan usia.

---

Introduction. Mesenchymal stem cell is the answer of many medicine problems, including orthopaedic. Bone marrow is still the main source. Because of limited source, invasive procedure, pain, and relative less cell, adipose will be promising source with equal regenerating and differentiating ability. Along with increasing life expectancy, geriatric population is increasing as well as the potential need for stem cell application. Yet there is still controversy about stem cell quality in aging.

Methods. This study was conducted in Stem Cell Medical Technology Integrated Service Unit Cipto Mangunkusumo General Hospital-Faculty of Medicine Universitas Indonesia, Jakarta, October 2015 - March 2016. 12 patients were divided into 3 age group; 15-30 year, 31-40 year, and 41-55 year. Bone marrow from posterior iliac crest and adipose tissue were collected, mesenchymal stem cell isolation and culture were done subsequently. Biological characterization, Population Doubling Time, osteogenic differentiation, and alizarin red assay were carried out. All data was analyzed using SPSS 20.

Results. No significant difference was observed in biological characteristic and Alizrin red assay of bone marrow and adipose mesenchymal stem cell among age group (p>0.05). There is significant difference in Population Doubling time in 31- 40 year group(p=0.000) and 41-55 year group(p=0.000).

Conclusions. Adipose mesenchymal stem cell had steady biological characteristic, Population Doubling Time, and osteosteogenic differentiation. Bone marrow mesenchymal stem cell had increasing population doubling time in increasing age, apart from biological characteristic and osteogenic differentiation. Adipose could be the source of choice in harvesting mesenchymal stem cell at any age."

"Pendahuluan: Penelitian in vitro menggambarkan inferioritas osteogenesis SPM adiposa dibandingkan dengan SPM sumsum tulang. Sebaliknya, penelitian in vivo menunjukkan kemiripan potensi osteogenik keduanya. penelitian ini mencoba mengetahui perbedaan kapasitas osteogenik antara keduanya dengan mengukur ekspresi Bone Morphogenetic Protein (BMP)-2 dan BMP Reseptor II, juga proses penyembuhan tulang dengan pengukuran histomorfometri.Metode: Delapan belas tikus Sprague dawley (SD) dilakukan defek tulang femur 5mm. Tikus dibagi tiga kelompok yang terdiri dari kontrol, implantasi SPM sumsum tulang + Hydroxypatite, dan implantasi SPM adiposa + Hydroxypatite. Tikus dikorbankan pada minggu kedua kemudian penilaian histomorfometri kuantitatif dilakukan dengan Image-J. Paramater yang diukur adalah luas total kalus, % area penulangan, % area kartilago, dan % area fibrosis. Dilakukan penilaian imunohistokimia menggunakan intensitas pewarnaan dan skor Imunoreaktivitas (IRS).Hasil: Kelompok SPM sumsum tulang menunjukkan ekspresi BMPR II lebih tinggi dibandingkan kelompok lainnya. Ekspresi BMPR II dianalisis dan didapatkan hasil yang signifikan (p= 0,04) dengan median 4.00 ± 2.75. Kelompok SPM sumsum tulang dan adiposa juga menunjukkan proses penyembuhan tulang yang lebih baik dibandingkan kelompok kontrol (p = 0,001). Tidak ada perbedaan yang signifikan antara SPM sumsum tulang dan SPM adiposa yang diukur pada % total area kalus (p = 1.000),% area penulangan (p = 1.000),% kartilago (p = 0,493) dan % fibrosis (p = 0,128).Diskusi: SPM adiposa memiliki kemampuan penyembuhan tulang yang serupa dengan SPM sumsum tulang. Growth factor dan reseptornya penting namun bukan satu-satunya faktor penyembuhan tulang.

---

Introduction: In vitro studies describe inferior osteogenesis of Adiposes to Bone Marrow Mesenchymal Stem Cell (MSC). Contrary, in vivo studies showing the resemblance of osteogenic potential between both groups. This study tries to investigate the difference of osteogenic capacity between BMSCs and ASCs by quantifying the expression of Bone Morphogenetic Protein (BMP)-2 and BMP receptor (BMPR) II also the bone healing process by histomorphometry measurement.Methods: Eighteen Sprague dawley (SD) rats were induced with 5mm femoral bone defect, then divided into three groups that consist of Control, Implementation of BMSC+Hydroxypatite, and Implementation of ASC+Hydroxypatite. They were sacrificed after 2 weeks, then performed histomorphometry assessment with Image-J. The measured paramater were total area of callus, % of osseous area, % of cartilage area, and % of fibrotic area. The immunohistochemistry measurement performed by staining intensity and immunoreactivity score (IRS).Results: The BMSC group showed higher expression of BMPR II compare to others. The expression of BMPR II was analyzed statistically and showed significant result (p=0.04) with median 4.00 ± 2.75. Both BMSC and ASC group have significantly better bone healing process compared with control group (p=0,001). There are no significant differences between ASC and BMSC measured in %total callus area (p=1.000), %Osseous area (p=1.000), %Cartilage area (p=0.493) and % Fibrous area (p=0.180). Discussions: ASC bone healing ability are similar to BMSC. Growth factor and its receptor are important but not sole contributing factor for bone healing."

"

Laminoplasti merupakan teknik dekompresi medulla spinalis dengan rekonstruksi lamina. Beberapa teknik telah diusulkan untuk mengisi defek lamina dengan menggunakan spacer. Perancah dirancang tiga dimensi sebagai pengisi celah/spacer untuk mengurangi potensi penolakan jaringan atau transmisi penyakit seperti pada penggunaan allograft serta mengurangi morbiditas yang ditimbulkan akibat pengambilan donor jaringan dari tempat lain di tubuh pasien (autograft). Penelitian pendahuluan telah dilakukan oleh peneliti dengan hasil perancah dari PLA terbukti biokompatibel secara invitro. Penelitian ini bertujuan untuk melanjutkan uji biokompatibilitas in vivo pada perancah PLA dan mengetahui pengaruh terhadap penambahan injeksi HA/Alginat serta seeding sel punca mesenkimal (SPM). Penelitian ini merupakan studi eksperimental dengan desain pre-test dan post-test control group untuk mengetahui efek aplikasi dari perancah menggunakan uji biokompatibilitas perancah in vivo pada hewan coba. Model laminoplasti dibuat pada 15 kelinci yang dibagi menjadi 5 kelompok berdasarkan jenis perancah yang dipakai untuk mengisi defek laminoplasti: Autograft, PLA, PLA+HA/alginat, PLA+ SPM, PLA+HA/Alginat+SPM. Secara umum tidak ditemui tanda inflamasi (derajat 1) pada sebagian besar sampel (47%) serta tidak ada sampel (0%) dengan area nekrosis (derajat 5). Penilaian mikroarsitektur perancah dengan Scanning Electrone Microscope menunjukkan integrasi jaringan yang baik ke dalam perancah. Tidak ada perbedaan bermakna pada hasil penilaian mikroskopis histopatologi dan mikrostruktur antara kelima kelompok. Hal ini menunjukan perancah sintetis sama baiknya dengan penggunaan autograft dan dapat direkomendasikan untuk penelitian translasional ke manusia agar seterusnya dapat diaplikasikan sebagai biomaterial yang biokompatibel untuk mengisi defek tulang.

 

Kata Kunci:  Perancah, PLA, Sel Punca Mesenkimal, Laminoplasti, Biokompatibilitas

 

---

Laminoplasty is a spinal decompression technique by lamina reconstruction. Several techniques have been proposed to fill the bone gap and maintaining widened canal by using spacers.  A 3-dimensional perancah is used as spacer to reduce the potential for tissue rejection or disease transmission as in the use of allograft and reduce the risk of donor site morbidity as seen in autograft. A preliminary study has been conducted by author to prove the PLA biocompatibility in vitro. This study aims to evaluate biocompatibility of PLA scaffold in vivo and see whether the addition of alginate / HA and mesenchymal stem cell (MSCs)injections can improve the biocompatibility and tissue-perancah integration in vivo. This study is an experimental study with a pre-test and post-test control group design. A total of 15 laminoplasty rabbit model were divided into 5 groups based on type of spacer used: Autograft, PLA, PLA+HA/alginate, PLA+ MSc, PLA+HA/Alginate+MSc. perancah. In general, there were no signs of inflammation (grade 1) in most samples (47%) and there were no samples (0%) with areas of necrosis (grade 5). From the microarchitectural study using Scanning Electrone Microscope (SEM) most sample shown a decrease in porosity which indicates a good tissue-perancah integration. There were no significant differences in the histopathological results and microstructural assessment between the five groups. This result showed that synthetic scaffold has similar tissue reaction and tissue integration profile as autograft. Thus, we can recommend for further translational study to human so that this biocompatible fabricated perancah can be used to fill bone defect. 

 

"

"Ada banyak metode yang telah dikembangkan untuk menghasilkan mikrokapsul untuk keperluan enkapsulasi sel punca. Namun, emulsi mikrofluida ditemukan memuaskan karena memungkinkan kita untuk menghasilkan tetesan berukuran rata yang dapat dikontrol secara efisien, di mana bahkan memungkinkan untuk melakukan enkapsulasi sel tunggal di setiap tetesan. Namun proses ini bukan tanpa masalah, terlihat bahwa kapsul mikro mudah larut dalam larutan buffer salin Ca2+/Mg2+. Masalah menunjukkan bahwa kapsul memiliki kekuatan mekanik yang buruk dan tidak stabil. Oleh karena itu, enkapsulasi ganda diperlukan, yang memungkinkan untuk menambahkan lapisan lain ke kapsul yang akan memungkinkan stabilitas lebih baik dan meningkatkan kekuatan mekanik. Di sini, studi awal enkapsulasi lapisan ganda dilakukan dengan menggunakan teknologi Lab-On-Chip dan minyak serta air sebagai bahan pengujian. Studi ini mengeksplorasi penggunaan Chip Polycarbonate (PC) dan Polydimethylsiloxane (PDMS) untuk enkapsulasi lapisan ganda. Simulasi Computational Fluid Dynamics (CFD) awalnya dilakukan untuk memastikan bahwa laju aliran sesuai untuk pengujian chip dan kemudian chip diuji secara individual dan dikarakterisasi, di mana parameter yang sesuai untuk enkapsulasi lapisan ganda diperoleh dan digunakan untuk menghasilkan sistem enkapsulasi ganda. Hasilnya menunjukkan karakteristik generasi tetesan dari chip individu dan desain sistem dua chip yang sukses yang dapat menghasilkan enkapsulasi lapisan ganda dengan ukuran sekitar 1300 -1700μm. Studi banding juga mengkonfirmasi fenomena yang diamati. Tulisan ini dapat digunakan untuk riset lebih lanjut pada enkapsulasi dua lapis terkendali mengunakan Lab-on-Chip.

---

There had been many methods developed to generate microcapsules for stem cell encapsulation purposes. However, microfluidic emulsion is found to be satisfactory as it allows us to generate a controllable even sized droplets efficiently, where it is even possible to encapsulate single cell in each droplet. However, this process does not come without a problem, it was noticed that the micro capsules were easily dissolved in a saline buffer solution Ca2+/Mg2+. The issue shows that the capsules had poor mechanical strength and were unstable. Therefore, double encapsulation was introduced, which allows us to add another layer to the capsule with would allow more stability and increase mechanical strength. Here, an initial study of double layer encapsulation is conducted with Lab-On-Chip technology using oil and water as testing materials. This study explores the use of Polycarbonate (PC) and Polydimethylsiloxane (PDMS) Chip for double layer encapsulation. A Computational Fluid Dynamics (CFD) simulation was initially conducted to ensure that flowrates were suitable for chip testing and then the chips are tested individually and characterized, where suitable parameters for double layer encapsulation were obtained and used to generate a double encapsulation system. The result shows the droplet generation characteristics of individual chips and a successful two chip system design that could generate double layer encapsulations with sizes of approximately 1300 -1700μm. Comparative studies also confirmed observed phenomenon. This paper can be used for further studies in controllable double-layer encapsulation using Lab-on-Chip."