Hasil Pencarian  ::  Simpan CSV :: Kembali

"Latar belakang. Hubungan antara inflamasi dan koagulasi telah banyak dijelaskan, dimana molekul adhesi memiliki peranan penting dalam inflamasi. Soluble intercellular adhesion molecule-1 (sICAM-1) dan soluble vascular cell adhesion molecule-1 (sVCAM-1) tampak berkaitan dengan trombosis pada beberapa penelitian sebelumnya. Molekul-molekul tersebut meningkat pada stenosis mitral (SM) namun bagaimana hubungannya dengan derajat trombosis atrium kiri belum diketahui. Metode. Pasien SM derajat sedang-berat (tanpa adanya regurgitasi mitral signifikan) yang menjalani pemeriksan ekokardiografi transesofageal diikutsertakan secara konsekutif sejak September-Oktober 2013. Penilaian gradasi trombosis atrium kiri dilakukan untuk mengkategorikan mereka menjadi kelompok non-trombus dengan left atrial spontaneous echo contrast (LASEC) tebal, dan kelompok non-trombus tanpa LASEC tebal, dan kelompok trombus. Kadar sICAM-1 dan sVCAM-1 dari vena perifer diukur dengan teknik enzymelinked immunosorbent assay. Hasil. Sebanyak 39 subyek penelitian dengan rerata usia 40,97±9,61 tahun, 71,8% berjenis kelamin perempuan, dan 67,7% memiliki irama fibrilasi atrium. Evaluasi terhadap gradasi trombosis atrium kiri (kelompok non-trombus tanpa LASEC tebal, kelompok non-trombus dengan LASEC tebal, dan kelompok trombus) menunjukkan kadar sICAM-1 sebesar 284,74 (218,79-321) ng/mL, 346,86 (125,68-698,12) ng/mL, dan 395,93 (171,44-1021,53) ng/mL secara berurutan (p=0,280). Kadar sVCAM-1 pada 3 kelompok tersebut sebesar 729,01 (543,93-967,8) ng/mL, 1066 (581,36-2470,6) ng/mL, dan 1158 (668,66-2498,3) ng/mL secara berurutan (p=0,016). Analisis multivariat menunjukkan fibrilasi atrium dan area katup mitral yang mempengaruhi gradasi trombosis. Kesimpulan. Terdapat perbedaan kadar sVCAM-1 pada kelompok menurut gradasi trombosis atrium kiri pada SM, namun pengaruh sVCAM-1 terhadap gradasi trombosis atrium kiri dipengaruhi oleh fibrilasi atrium dan area katup mitral.

---

Background. The relationship between inflammation and coagulation has been widely described while adhesion molecules takes important role in inflammation. Soluble intercellular adhesion molecule-1 (sICAM-1) and soluble vascular cell adhesion molecule-1 (sVCAM-1) seemed to be related to thrombosis in previous studies. Those molecules increase in mitral stenosis (MS) but their relationship with left atrial thrombosis gradation is still unknown.

Methods. Patients with moderate-severe MS (without any significant mitral regurgitation) who underwent transesophageal echocardiography were recruited consecutively in September-October 2013. They were divided into three categories of left atrial thrombosis gradation: non-thrombus without dense LASEC group, non-thrombus with dense LASEC group, and thrombus group. sICAM-1 and sVCAM-1 levels in peripheral vein were determined by enzymelinked immunosorbent assay technique.

Results. A total of 39 subjects were enrolled in this study with a mean age of 40,97±9,61 year, 71,8% of them were female, and 67,7% of them had atrial fibrillation. Evaluation on left atrial thrombosis gradation (non-thrombus with dense LASEC group, non-thrombus without dense LASEC group, and thrombus group) showed that sICAM-1 levels were 284,74 (218,79-321) ng/mL, 346,86 (125,68-698,12) ng/mL, and 395,93 (171,44-1021,53) ng/mL, cosecutively (p=0,280). sVCAM-1 levels were 729,01(543,93-967,8) ng/mL, 1066 (581,36-2470,6) ng/mL, and 1158 (668,66-2498,3) ng/mL, consecutively (p=0,016). Multivariate analysis showed that AF and MVA influence thrombosis gradation.

Conclusion. Difference in sVCAM-1 levels was found among left atrial thrombosis gradation groups in mitral stenosis, but its effect on thrombosis gradation was influenced by atrial fibrillation and mitral valve area."

"Latar Belakang: ALDH1A1 merupakan gen yang meregulasi diferensiasi dan proliferasi sel dengan jalur asam retinoat. Telah dikenal sebagai gen pluripotensi, ALDH1A1 dapat ditemukan pada Cancer Stem Cell (CSC) dan Mesenchymal Stem Cells (MSC) seperti Adipose-derived Stem Cell (ASC) dan Umbilical Cord Stem Cells (UCSC). Studi ini bertujuan untuk membandingkan relatif ekspresi gen ALDH1A1 pada ASC dan UCSC terhadap ALDH+ Breast CSC (BCSC). Metode: One-step qRT-PCR dilakukan untuk mendeteksi ekspresi mRNA ALDH1A1 pada ekstraksi RNA ASC, UCSC, dan BCSC. Hasil PCR dianalisis dengan BCSC menjadi ekspresi relatif setelah data dinormalisasikan oleh gen 18S.Hasil: Ekspresi gen ALDH1A1 relatif ditemukan lebih tinggi secara signifikan pada ASC dibandingkan UCSC. Sementara itu, ALDH1A1 lebih rendah diekspresikan pada MSC dibandingkan BCSC.Konklusi: ASC memiliki kemampuan pluripotensi lebih baik dibandingkan UCSCs pada aspek ALDH1A1. Hal ini disebabkan oleh kemampuan spesifik yang dimiliki ALDH1A1 untuk proliferasi dan diferensiasi ASC.

---

Background: ALDH1A1 is a gene which regulates the cell differentiation and proliferation through retinoic acid pathway. Being a renowned pluripotent gene, ALDH1A1 could be found in both cancer stem cells (CSCs) and human Mesenchymal Stem Cells (MSCs) such as Adipose-derived Stem Cells (ASCs) and Umbilical Cord Stem Cells (UCSCs). This research aimed to compare the expression of ALDH1A1 gene in ASCs and UCSCs relatively towards ALDH+ Breast CSCs (BCSCs).

Method: A one-step qRT-PCR was done to detect the mRNA levels of ALDH1A1 gene in the RNA extraction of ASCs, UCSCs, and BCSCs. The PCR result was analyzed into relative expression with BCSCs, after being normalized with housekeeping 18S gene.

Results: The expression of ALDH1A1 was found to be significantly higher in ASCs than UCSCs, relatively. Furthermore, ALDH1A1 gene was expressed lower in MSCs than BCSCs.

Conclusion: ASCs are discovered to be better in pluripotent capability than UCSCs in the aspect of ALDH1A1. This finding signifies the specific role of ALDH1A1, resulting in contribution of differentiation and proliferative capability to ASCs.

"

"In this volume, a group of internationally recognized experts reviews AJ biology over a wide range of organization, from atoms to molecules, to protein complexes, molecular networks, cells, tissues, and overall animal development. AJs have also been an integral part of animal evolution, and play central roles in cancer development, pathogen infection and other diseases. This book addresses major questions encompassing AJ biology. How did AJs evolve? How do cadherins and catenins interact to assemble AJs and mediate adhesion? How do AJs interface with other cellular machinery to couple adhesion with the whole cell? How do AJs affect cell behaviour and multicellular development? How can abnormal AJ activity lead to disease?"