Hasil Pencarian  ::  Simpan CSV :: Kembali

"Tujuan: Mengetahui pengaruh fotokoagulasi laser terhadap kadar Hypoxia-inducible Factor-1α (HIF-1α) vitreus dan kadar Intercellular Adhesive Molecule-1 (ICAM-1) vitreus pada Retinopati Diabetik Proliferatif. Metode: Penelitian ini adalah uji klinis acak terbuka. Desain penelitian adalah uji klinis acak terbuka. Dua puluh dua mata dirandomisasi menjadi 2 kelompok, yaitu yang mendapatkan fotokoagulasi laser panretinal 1-2 minggu pre-vitrektomi dan kontrol. Kadar HIF-1α dan ICAM-1 dihitung menggunakan enzyme-linked immunosorbent assay (ELISA). Central macula thickness (CMT) diukur saat baseline, pre-vitrektomi, follow-up 2, 4, dan 12 minggu paska vitrektomi. Hasil: Analisis hasil didapatkan rerata kadar HIF-1α vitreus (dalam ng/mL) pada kelompok kontrol dan fotokoagulasi laser masing-masing 0,152±0,015 dan 0,164±0,033 sedangkan kadar ICAM-1 vitreus(dalam ng/mL) adalah 17,840±14,140 dan 27,027±10,452. Tidak terdapat perbedaan bermakna rerata kadar HIF-1α dan ICAM-1 vitreus serta CMT di setiap waktu follow up antara kedua kelompok. Terdapat korelasi antara kadar HIF-1α dan HbA1c (r=0,463, p=0,03). Pengukuran CMT pre-vitrektomi dan kadar HIF-1α vitreus pada penelitian ini mempunyai korelasi positif pada kedua kelompok (r = 0,447 dan r = 0,32). Simpulan: Fotokoagulasi laser 1-2 minggu pre-vitrektomi tidak menyebabkan kadar HIF-1α dan ICAM-1 yang lebih rendah dibandingkan dengan yang tidak mendapatkan laser. Kadar HIF-1α vitreus berkorelasi dengan tebalnya CMT, sedangkan kadar ICAM-1 vitreus tampak tidak berhubungan. Kontrol glikemik yang lebih buruk pada kelompok fotokoagulasi laser mempengaruhi hasil dari kadar HIF-1α maupun ICAM-1 vitreus.

---

Purpose: to determine the effect of pre-treatment of laser panretinal photocoagulation (PRP) before vitrectomy to Hypoxia-inducible Factor-1α (HIF-1α) and Intercellular Adhesive Molecule-1 (ICAM-1) in the vitreous fluid of patients with diabetic retinopathy proliferative.

Methods: This is post-test only randomized clinical trial open label study. Twenty two eyes were recruited, and 11 eyes had pre-treatment of PRP pre-vitrectomy and other 11 eyes were served as control. HIF-1α and ICAM-1 were measured by enzyme-linked immunosorbent assay (ELISA). At the beginning of PRP and just before vitrectomy (1-2 week after PRP), and at the time of follow-up of 2,4, and 12 week after vitrectomy, central macular thickness (CMT) was measured.

Results: Mean of HIF-1α(ng/mL) were 0,152±0,015 and 0,164±0,033in control and photocoagulation group, respectively. Mean of ICAM-1(ng/mL) were 17,840±14,140 and 27,027±10,452. There were no statistically significant differences in the comparison of both HIF-1α and ICAM-1 in each group and CMT at each time of follow up. The positive correlation between ICAM-1 in the vitreous body and HbA1c was clinically significant (r=0,463, p=0,03). The positive correlation between both level of HIF-Iα the vitreous body of both groups and CMT was found (r = 0,447 dan r = 0,32).

Conclusion: Laser photocoagulation 1-2 weeks before vitrectomy did not cause lower concentration of vitreous level of HIF-1α dan ICAM-1. Glycemic control status that worse in laser photocoagulation group could influence the level of HIF-1α and ICAM-1 vitreus."

""ABSTRAK"Tujuan: menilai kadar Hypoxia-inducible Factor-1? HIF-1? dan Intercellular Adhesion Molecule-1 ICAM-1 vitreus pada retinopati diabetik proliferatif yang diberikan bevacizumab intravitreal, serta hubungan keduanya terhadap ketebalan makula sentral previtrektomi.Metode: tiga puluh dua mata dirandomisasi menjadi 2 kelompok, yaitu yang mendapatkan suntikan bevacizumab intravitreal 1-2 minggu previtrektomi dan kelompok kontrol langsung dilakukan vitrektomi . Penghitungan kadar HIF-1? dan ICAM-1 dilakukan dengan metode enzyme-linked immunosorbent assay ELISA . Ketebalan makula sentral diukur saat awal, previtrektomi, serta 2, 4, dan 12 minggu pascavitrektomi dengan menggunakan Stratus OCT.Hasil: rerata kadar HIF-1? vitreus dalam ng/mg protein pada kelompok kontrol dan bevacizumab intravitreal masing-masing 0,020 0,006;0,077 dan 0,029 0,016;0,21 . Kadar ICAM-1 vitreus dalam ng/mL adalah 20,10 3,41;40,16 dan 23,33 0,63;68,5 . Rerata kadar HIF-1? dan ICAM-1 vitreus didapatkan tidak berbeda bermakna antara kedua kelompok.Simpulan: bevacizumab intravitreal 1-2 minggu previtrektomi belum dapat membuat kadar HIF-1? lebih rendah daripada kelompok kontrol. Kadar ICAM-1 kelompok bevacizumab didapatkan lebih tinggi pada kelompok kontrol. Tidak didapatkan hubungan yang bermakna antara ketebalan makula sentral previtrektomi terhadap kadar HIF-1? dan ICAM-1.Kata kunci: retinopati diabetic proliferatif, HIF-1?, ICAM-1, bevacizumab"

---

""ABSTRACT"Purpose to assess the levels of Hypoxia inducible factor 1 HIF 1 and intercellular adhesion molecule 1 ICAM 1 in vitreous of proliferative diabetic retinopathy patients which were given intravitreal bevacizumab IVB , as well as its relation to the central macular thickness CMT measured prior to vitrectomy.Method this was post test only randomized clinical trial open label, in which thirty two eyes were randomized into two groups, one that received an IVB injection at 1 2 weeks previtrectomy and the control group. Measurement of HIF 1 and ICAM 1 was conducted using enzyme linked immunosorbent assay ELISA . The CMT were measured at the initial visit, prior to vitrectomy, and at follow up time 2, 4, and 12 weeks postoperative using Stratus OCT.Result The mean levels of HIF 1 vitreous ng mg protein in the control group and IVB respectively 0.020 0.006 0.077 and 0.029 0.016 0.21 . Vitreous levels of ICAM 1 ng mL in control group and IVB group were 20.10 3.41 40.16 and 23.33 0.63 68.5 . The mean levels of HIF 1 and ICAM 1 vitreous obtained did not differ significantly between the two groups.Conclusion Intravitreal bevacizumab 1 2 weeks prior to vitrectomy was not enough to make the levels of HIF 1 lower in IVB group. Median of ICAM 1 level in IVB group was higher than control group. There were no correlation between CMT with HIF 1 and ICAM 1 levels. "

"Latar Belakang: DM merupakan salah satu penyebab morbiditas dan mortalitas tertinggi di dunia, dengan 15-25% pasien akan berkomplikasi menjadi DFU. Data pada tahun 2003 di RSCM menunjukkan bahwa angka kematian akibat DFU adalah 16% dan angka amputasi mencapai 25%. Hingga saat ini belum terdapat strategi tatalaksana DFU yang efektif karena patogenesis molekular yang menyebabkan kegagalan penyembuhan luka masih belum sepenuhnya dipahami. Selain itu pengendalian kadar glukosa darah dalam pengobatan DFU masih belum jelas dan menjadi perdebatan dalam berbagai studi.Tujuan: Penelitian ini bertujuan untuk menganalisis hubungan HbA1c dan GDS dengan faktor angiogenesis HIF-1α, sehingga dapat dijadikan dasar dalam melakukan tata laksana yang tepat untuk pasien DFU.Metode: Desain penelitian potong lintang. Subjek penelitian pasien DFU yang berobat ke RSCM, diambil data dasar (jenis kelamin dan usia), pemeriksaan klinis (TB, BB, dan IMT), pemeriksaan laboratorium (GDS, HbA1c). HIF-1α diperiksa dari sampel biopsi jaringan luka DFU saat operasi debridemen dan amputasi dengan pemeriksaan ELISA. Data dilakukan uji normalitas Saphiro-Wilk dan uji normalitas Kolmogorov Smirnov, dilanjutkan uji korelasi Spearman. Pengaruh variabel perancu dianalisa dengan uji mann whitney dan tes regresi linear sederhana.Hasil: Terdapat 64 pasien yang memenuhi kriteria inklusi dan dilakukan pemeriksaan kadar HiF1α dari sampel jaringan biopsi. Data karakteristik didapatkan hasil kelompok dominan perempuan (54.7%) dengan usia rerata 55.7 ± 10.4 tahun, IMT median 24.9 kg/m² (overweight 48.2%, obesitas 34.6%), dan komorbid anemia (84.3%). Karakteristik laboratorium, GDS median 220 (14-705)mg/dL dengan kelompok kondisi hiperglikemik >200 mg/dL sebanyak 54.7%. HbA1c median 7.7(4.1-13.7)% dengan kelompok kontrol gula darah buruk HbA1c >6.5% sebanyak 85.8%. Tidak didapatkan korelasi bermakna antara GDS dengan HIF-1α p 0.523(p>0.05). Tidak didapatkan korelasi yang bermakna antara HbA1c dengan HIF-1α p 0.792(p>0.05). Didapatkan variable perancu yang bermakna pada kondisi derajat luka DFU p 0.03 (p< 0,05).Kesimpulan: Hasil penelitian ini menunjukkan bahwa baik HbA1c atau GDS tidak mempunyai hubungan yang bermakna dengan kadar HiF-1α. Variabel perancu kondisi derajat luka DFU berpengaruh secara signifikan terhadap ekspresi HIF-1α

---

Background: DM is one of the leading causes of morbidity and mortality in the world, with 15-25% of patients developing complications of DFU. Results data in 2003 at the RSCM showed that the mortality rate from DFU was 16% and the amputation rate was 25%. There is no effective DFU management strategy because the molecular pathogenesis that causes wound healing failure is still not fully understood. In addition, the control of blood glucose levels in the treatment of DFU is still unclear and has been debated in various studies.

Objective: This study aims to analyze the relationship between HbA1c and GDS with the angiogenesis factor HIF-1α, so that it can be used as a basis for appropriate management of DFU patients.

Methods: The research design was cross sectional. Body mass index, comorbid disease status were recorded. The laboratory parameters GDS, HbA1c and HiF-1a expression examined in the laboratory. Test the normality data by the Saphiro-Wilk test and the Kolmogorov Smirnov test, followed by the Spearman correlation test. The effect of confounding variables was analyzed by Mann Whitney test and simple linear regression test.

Results: There were 64 patients who met the inclusion criteria and were examined for HiF1α levels from biopsy tissue samples. Characteristic data showed that the dominant group was female (54.7%) with a mean age of 55.7 ± 10.4 years, median BMI 24.9 kg/m² (overweight 48.2%, obesity 34.6%), and comorbid anemia (84.3%). Laboratory characteristics, the median GDS of 220 (14-705)mg/dL with the hyperglycemic condition group >200 mg/dL as much as 54.7%. The median HbA1c was 7.7(4.1-13.7)% with the bad blood sugar control group HbA1c >6.5% as much as 85.8%. There was no significant correlation between GDS and HIF-1α p 0.523 (p>0.05). There was no significant correlation between HbA1c and HIF-1α p 0.792 (p>0.05). A significant confounding variable was found in the condition of the degree of wound DFU p 0.03 (p < 0.05).

Conclusion:The results of this study showed that neither HbA1c nor GDS had a significant correlation with HiF-1α . The confounding variable of DFU wound degree had a significant effect on the expression of HIF-1α"

"Latar Belakang: Faktor transkripsi Hypoxia inducible factor-1 (HIF-1 merupakanpengatur utama hipoksia, termasuk menyebabkan penekanan sistem perbaikan deoxyribose nucleic acid (DNA), sehingga menghasilkan instabilitas genetik pada sel kanker. Varian genetik HIF-1α C1772T (P582S) dan G1790A (A588T) dipercaya mempunyai aktivitas transkripsi yang lebih tinggi.Peranan polimorfisme HIF-1α ini sudah diteliti pada beberapa jenis kanker seperti kanker ginjal, payudara, ovarium, tetapi belum ada penelitian pada kanker paru. Metode: Polimorfisme HIF-1α diperiksa dengan menggunakan direct sequencing dengan total sampel 83 pasien kanker paru (42 adenokarsinoma, 30 skuamous sel karsinoma, empat adenoskuamous sel karsinoma dan tujuh kanker paru karsinoma sel kecil (KPKSK) dan 110 subjek sehat sebagai kontrol. Hubungan polimorfisme HIF-1α dengan kelainan genetik/epigentik loss of heterozygot (LOH) TP53, LOH 1p34, LOH retinoblastoma-1 (RB1), inaktivasi p16 dan kelainan epidermal growth factor receptor (EGFR) kemudian diperiksa. Hasil: Frekuensi polimorfisme HIF-1α pada kanker paru dan kontrol telah sesuai dengan keseimbangan Hardy-Weinberg. Pada penelitian ini tidak ditemukan perbedaan frekuensi genotipe C1772T atau G1790A antara kanker paru dengan kontrol sehat. Tetapi, frekuensi varian HIF1A C1772T ditemukan tinggi bermakna di pasien kanker paru dengan LOH TP53 (p=0,015). Pada pasien adenokarsinoma, individu dengan varian alel memiliki frekuensi tinggi LOH TP53 (p=0,047), LOH 1p34 (p=0,009) atau keduanya (LOH TP53 dan LOH 1p34) (p=0,008). Aktivitas transkripsi juga diperiksa secara in vitro dan ditemukan HIF1A varian pada sel kanker paru A549 mempunyai aktivitas yang meningkat secara bermakna dibanding wild type HI1F1A baik di kondisi normoksia atau hipoksia, terutama P582A di sel dengan mutan p53 (p< 0,0005 dan p< 0,005). Kesimpulan: Penelitian ini mengindikasikan polimorfisme gen HIF-1α mempunyai peranan penting dalam karsinogenesis paru terutama pada adenokarsinoma, diduga melalui peningkatan instabilitas genetik.

---

Background and objective: The transcription factor, hypoxia-inducible factor-1 (HIF-1), is a master regulator of hypoxia, including repression of DNA repair systems, resulting in genomic instability in cancer cells. The roles of the polymorphic HIF-1a variants, C1772T (P582S) and G1790A (A588T), which are known to enhance transcriptional activity, were evaluated in lung cancers.

Methods: HIF-1a polymorphisms were assessed by direct sequencing in a total of 83 lung cancer patients (42 adenocarcinomas, 30 squamous cell, four adenosquamous cell and seven small cell lung carcinomas) and in 110 healthy control subjects. The relationship between these polymorphisms and the frequently observed genetic and/or epigenetic aberrations, TP53 loss of heterozygosity (LOH), 1p34 LOH, retinoblastoma-1 (RB1) LOH, p16 inactivation and epidermal growth factor receptor aberrations, was then assessed.

Results: There were no significant differences in genotype frequencies for either C1772T or G1790A between lung cancer patients and healthy controls. However, the frequency of the HIF1A C1772T variant allele was significantly higher in lung cancer patients with TP53 LOH (P = 0.015). Among adenocarcinoma patients, individuals with variant alleles of either polymorphism showed significantly higher frequencies of TP53 LOH (P = 0.047), 1p34 LOH (P = 0.009), or either of these (P = 0.008) in the tumours. The in vitro transcriptional activity of these HIF1A variants in A549 lung cancer cells was significantly greater than that of the wild type under either normoxic or hypoxic conditions, especially for P582S in cells containing mutant p53 (P < 0.0005 and P < 0.005, respectively).

Conclusions: These findings indicate that functional polymorphisms in the HIF-1a gene may have an important impact on lung carcinogenesis, especially in adenocarcinomas, possibly by increasing genomic instability."

"Latar Belakang: Stres oksidatif merupakan salah satu faktor patogenesis terjadinya retinopati diabetik (RD). Fotokoagulasi laser dan anti-VEGF bermanfaat pada penanganan RD. Keberhasilan terapi dan prognosis dapat dilakukan melalui penilaian klinis dan penanda biologis stres oksidatif. Tujuan: Penelitian ini bertujuan membandingkan pengaruh fotokoagulasi laser dan bevacizumab intravitreal (BIV) terhadap penanda biologis stres oksidatif, antara lain aktivitas ALDH plasma, kadar VEGF, MDA dan aktivitas SOD vitreus pada penyandang RD proliferatif. Metode: Penelitian ini adalah penelitian prospektif dengan desain uji klinis acak tersamar tunggal. Sebanyak 72 mata dari 69 penyandang RD proliferatif di Rumah Sakit Cipto Mangunkusumo (RSCM) antara Februari 2011 ? Juni 2013 dirandomisasi menjadi 4 kelompok terdiri dari kelompok 1) kontrol yaitu kelompok langsung vitrektomi sesuai indikasi (n = 18), 2) kelompok yang mendapat fotokoagulasi laser pre-vitrektomi (n = 18), 3) kelompok yang mendapat BIV pre-vitrektomi(n = 18) dan 4) kelompok yang mendapat kombinasi BIV dan fotokoagulasi laser previtrektomi (n = 18). Hasil: Hasil penelitian ini mendapatkan bahwa pada kelompok 1, 2, 3 dan 4 masingmasing rerata aktivitas ALDH plasma (IU/mg protein) (0,034+0,02; 0,027+0,02; 0,025+0,02; 0,031+0,1; p = 0,66), kadar MDA vitreus (nmol/mL) (1,661+1,21; 1,557+1,32; 1,717+1,54; 1,501+1,09; p = 0,96), dan aktivitas SOD (U/mL) (0,403+0,50; 0,210+0,18; 0,399+0,49; 0,273+0,32 p = 0,38) dan tidak terdapat perbedaan bermakna, sedangkan perbandingan rerata kadar VEGF vitreus (pg/mL) (0,356+0,60; 0,393+0,45; 0,150+0,24; 0,069+0,13; p = 0,05) menunjukkan perbedaan yang bermakna. Kadar VEGF kelompok kombinasi BIV dengan fotokoagulasi laser lima kali lebih rendah dibandingkan dengan kelompok kontrol. Simpulan: Kombinasi BIV dan fotokoagulasi laser tidak berpengaruh terhadap aktivitas ALDH plasma dan SOD vitreus, namun berpengaruh terhadap kadar MDA dan VEGF vitreus penyandang RD proliferatif. Kombinasi BIV dengan fotokoagulasi laser perlu dilakukan pada RD proliferatif. Pengukuran ALDH plasma dapat digunakan sebagai faktor prognostik untuk perubahan CMT dan visus.

---

Background: Diabetic Retinopathy (DR) is retinal vascular complications in patients with diabetes mellitus (DM). Oxidative stress plays a major role in the pathogenesis of this disease. The current management of DR includes laser photocoagulation (LF) and administration of anti-VEGF, such as intravitreal bevacizumab (IVB). Clinical parameters are usually applied in determining the outcomes of these methods of therapies. However, the measurement of biomarkers of oxidative stress can possibly be used to determine the prognosis.

Purpose: This study was aimed to compare the effect of LF, IVB and combined treatments on biomarkers of oxidative stress such as plasma ALDH and vitreal SOD activities, and vitreal VEGF and MDA level on proliferative DR patients.

Methods: In this single blind randomized clinical trial, 72 eyes from 69 cases of proliferative DR in Cipto Mangunkusumo Hospital (RSCM) between February 2011 - June 2013 were randomized into 4 groups : 1) control group (n = 18), 2) LF previtrectomy group (n = 18), 3) IVB pre-vitrectomy group (n = 18) and 4) combined IVB and LF pre-vitrectomy group (n = 18). In all groups, the biomarkers of oxidative stress were measured as the primary outcome and visual acuity and CMT as secondary outcome.

Results: There were no statistically significant differences in the comparison of the average plasma ALDH activity (IU/mg protein) (0.034+0.02; 0.027+0.02; 0.025+0.02; 0.031+0.1; p = 0.66), vitreal MDA level (nmol/mL) (1.661+1.21; 1.557+1.32; 1.717+1.54; 1.501+1.09; p = 0.96) and SOD activity (U/mL) (0.403+0.50; 0.210+0.18; 0.399+0.49; 0.273+0.32 p = 0.38) among these four groups, respectively. However, the average of vitreal VEGF level (pg/mL) among these 4 group showed a statistically significant difference (0.356+0.60; 0.393+0.45; 0.150+0.24; 0.069+0.13; p = 0.05), with the level of vitreal VEGF in the combined group was 5 times lower than control.

Conclusion: Combined treatments of DR by IVB and LF does not have any effect on the activities of plasma ALDH and vitreal SOD. However, these combined treatments were correlated with lower vitreal MDA and VEGF level, higher SOD activity and lower VEGF level in proliferative DR. Combined treatments with IVB and LF are recommended for the management of proliferative DR patients. The measurement of plasma ALDH can be used as a prognostic factor for determining the visual acuity and CMT."

"Latar Belakang: Kadar Soluble Vascular Cell Adhesion Molecule-1 (sVCAM-1) dan Soluble Intercellular Adhesion Molecule-1 (sICAM-1) diketahui meningkat pada pasien dengan stenosis mitral (SM). Namun, apakah kenaikan tersebut disebabkan oleh proses reumatik yang aktif ataukah karena pengaruh hemodinamik SM masih belum diketahui dengan jelas.Tujuan: Meneliti pengaruh tingkat keparahan SM pada kadar sVCAM-1 dan sICAM-1Metode: Penelitian ini berdesain potong lintang. Subjek penelitian dibagi menjadi tiga kelompok, yaitu kelompok kontrol normal, kelompok pasien yang akan menjalani Komisurotomi Mitral Transvena Perkutan (kelompok pre KMTP), dan kelompok pasca KMTP ≥ 1 tahun. Dilakukan pemeriksaan kadar sVCAM-1 dan sICAM-1 pada ketiga kelompok tersebut, dan pemeriksaan ekokardiografi untuk menilai tingkat keparahan katup mitral (Mitral Valve Area (MVA) mean Mitral Valve Gradient (mMVG), Tricuspid Valve Gradient (TVG), mean Pulmonary Artery Pressure (mPAP) dan Left Atrial Volume Index (LAVI)) pada kelompok pre KMTP dan kelompok pasca KMTP ≥ 1 tahun.Hasil: Didapatkan 23 orang kontrol normal, 26 pasien kelompok pre KMTP, dan 27 pasien kelompok pasca KMTP ≥ 1 tahun.. Kadar sVCAM-1 dan sICAM-1 pada kelompok pasien dengan SM (kelompok pre dan pasca KMTP ≥ 1 tahun) lebih tinggi dibandingkan dengan kontrol normal (536,87 ± 251,68 ng/ml vs 536,87 ± 149,22 ng/ml; p<0,001 dan 270,04 ± 111,67 ng/ml vs 216,43 ± 50,60 ng/ml; p=0,006). Namun tidak didapatkan perbedaan kadar sVCAM-1 dan sICAM-1 antara kelompok pre KMTP dengan kelompok pasca KMTP ≥ 1 tahun (854,67 ± 227,26 ng/ml vs 809,22 ± 275,63 ng/ml; p=0,515 dan 279,98 ± 114,39 ng/ml vs 260,49 ± 110,38 ng/ml; p=0,539) . Tidak didapatkan hubungan antara tingkat keparahan katup mitral (MVA, mMVG, TVG, mPAP dan LAVI) dengan kadar sVCAM-1 dan sICAM-1 (p>0,05).Kesimpulan: Tidak terdapat hubungan antar tingkat keparahan katup mitral dengan kadar kadar sVCAM-1 dan sICAM-1

---

Background: Blood Soluble Vascular Cell Adhesion Molecule-1 (sVCAM-1) and Soluble Intercellular Adhesion Molecule-1 (sICAM-1) levels are increased in Mitral Stenosis (MS) patients, but whether this phenomenon is due to chronic rheumatic inflammation process or because of hemodynamic effect of mitral stenosis severity is not clear yet.

Objective: This research aims to study the effect of mitral stenosis severity on blood sVCAM-1 and sICAM-1 levels.

Method: This study is a cross sectional study. Research subjects were divided into 3 groups: control patients, pre BMV (Baloon Mitral Valvulotomy) group, and post BMV group (patients who have already undergone BMV for ≥ 1year). Blood sVCAM-1 and sICAM-1 were measured using quantitative sandwich immunoassay method in all groups, and echocardiographic study to evaluate MS severity (MVA (Mitral Valve Area), mMVG (mean Mitral Valve gradient), TVG (Tricuspid Valve Gradient), mPAP (mean Pulmonary Artery Pressure), and LAVI (Left Atrial Volume Index) measurements were performed to pre BMV and post BMV group at the same day with the blood sample collections.

Results: There were 23 normal subjects, 26 patients in pre BMV group, and 27 patients in post BMV group. The sVCAM-1 and sICAM-1 levels in patients with MS (pre BMV and post BMV group) were higher than normal control subjects (536,87 ± 251,68 ng/ml vs 536,87 ± 149,22 ng/ml; p<0,001 and 270,04 ± 111,67 ng/ml vs 216,43 ± 50,60 ng/ml; p=0,006), meanwhile there were no differences of sVCAM-1 and sICAM-1 levels between pre BMV and post BMV group (854,67 ± 227,26 ng/ml vs 809,22 ± 275,63 ng/ml; p=0,515 dan 279,98 ± 114,39 ng/ml vs 260,49 ± 110,38 ng/ml; p=0,539). There were also no significant correlation between mitral stenosis severity (MVA, mMVG, TVG, mPAP dan LAVI) with sVCAM-1 and sICAM-1 levels (p>0,05).

Conclusion: There were no correlation between mitral stenosis severity with blood sVCAM-1 and sICAM-1 levels."

"Tujuan: Untuk mengetahui pengaruh suplementasi pycnogenol 150 mg perhari selama 8 minggu terhadap amplitudo dan waktu implisit pada gelombang b dan oscillatory potential (OP) ERG skotopik retinopati diabetik nonproliferatif ringan dan sedang.Metode: Uji klinik acak tersamar. Empat puluh subjek dengan retinopati diabetik nonproliferatif ringan sedang diacak dan dibagi menjadi dua kelompok, 20 subjek mendapat pycnogenol, 20 subjek mendapat pycnogenol. Pengukuran objektif dilakukan sebelum pemberian suplementasi dan 8 minggu setelahnya, yang meliputi amplitudo gel.b, waktu implisit gel.b, amplitudo sum OP, waktu implisit sum OP .Hasil: Pada kelompok pycnogenol sebelum perlakuan, amp gel.b 397,9±109,6μV, waktu implisit gel.b 48,7 (44,3-68,2) ms, amp sum OP 193,05 (15,2-498,9) μV dan waktu implisit sum OP 126,18± 7,8ms. Setelah 8 minggu pada kelompok pycnogenol, amp gel.b 396,2±115,7 μV, waktu implisit gel.b 47,8 (43,4-58,4)ms, amp sum OP 228,45 (16,3-511,8) μV dan waktu implisit sum OP 126,2 (118,2-137) ms. Pada kelompok plasebo sebelum intervensi, amp gel.b 349± 79 μV, waktu implisit gel.b 48,7 (44,3-68,2) ms, amp sum OP 101,45 (28,3-301,2) μV dan waktu implisit sum OP 130 (121,6-163,5) ms. Setelah 8 minggu pada kelompok plasebo, amp gel.b 334,65±70,3 μV, waktu implisit gel.b 49,15 (44,3 -68,2) ms, amp sum OP 124,9 (51,3-303,8)μV dan waktu implisit sum OP 130 (121,6-163,5) ms. Tidak terdapat perbedaan bermakna secara statistik pada semua keluaran.Kesimpulan: Tidak terdapat perbedaan yang bermakna secara statistik parameter amplitudo gel.b, waktu implisit gel.b, amplitudo sum OP, waktu implisit sum OP dari pemberian pycnogenol 150 mg sehari selama 8 minggu pada retinopati diabetik nonproliferatif ringan sedang.

---

Objective: This study is to evaluate the effect of eight weeks supplementation of 150 mg pycnogenol, to b-wave amplitude, b-wave implicit time, sum Oscillatory Potential (OP) amplitude and sum Oscillatory Potential (OP) implicit time on Electroretinography (ERG) result of mild - moderate nonproliferative diabetic retinopathy (NPDR) patient, compared to plasebo.Methods: Randomized clinical trial of 40 mild - moderate NPDR patients, which further equally divided into two groups. The b-wave amplitude (amp), b-wave implicite time (it), sum OP amplitude (amp), sum OP implicit time (it) ERG were evaluated before and after eight weeks pycnogenol supplementationResults:The ERG results of pycnogenol group before intervention were as follows: b wave amp 397,9±109,6μV, b-wave it 48,7 (44,3-68,2) ms, sum OP amp 193,05 (15,2-498,9) μV and sum OP it 126,18± 7,8ms. After 8 weeks in pycnogenol group, b wave amp 396,2±115,7 μV, b wave it 47,8 (43,4-58,4)ms, sum OP amp 228,45 (16,3-511,8) μV and sum OP it 126,2 (118,2-137) ms. Meanwhile in placebo group before intervention, the b wave amp was 349± 79 μV, b-wave it 48,7 (44,3-68,2) ms, sum OP amp 101,45 (28,3-301,2) μV and sum OP it 130,8±8,4 ms. After 8 weeks in placebo group, b wave amp 334,65±70,3 μV, b-wave it 49,15 (44,3 -68,2) ms, sum OP amp 124,9 (51,3-303,8)μV and sum OP it 130 (121,6-163,5) ms. No statistical significant differences in all outcomeConclusions: No significant differences in b-wave amplitude, b-wave implicite time, sum OP amplitude and sum OP implicit time ERG after 150 mg pycnogenol supplementation for 8 weeks in mild-moderate NPDR compare with placebo."

"Latar Belakang : Penelitian ini menganalisis respons adaptasi jaringan jantung pada paparan hipoksia hipobarik intermiten (HHI) pada tikus. Faktor transkripsi HIF-1α penting untuk mengatasi keadaan hipoksia, terdiri atas 2 subunit yaitu HIF-1α dan HIF-1β yang dalam keadaan hipoksia membentuk heterodimer dan mengatur ekspresi sejumlah gen target untuk mengatasi keadaan hipoksia. Hipoksia akan menyebabkan jantung mengalami beban yang meningkat berupa hipertrofi ventrikel. Jantung akan mengatasi keadaan tersebut melalui pembentukan Mb dan BNP-45.Metode : 25 ekor tikus jantan Sprague-Dawley dibagi dalam 5 kelompok dan 4 kelompok dipaparkan HHI menggunakan hypobaric chamber di Lakespra Saryanto TNI AU, selama 50 menit dengan variasi ketinggian, interval intermiten 1 minggu, 4 kali perlakuan (hari 1, 8, 15 dan 22). Dilakukan pengukuran protein HIF-1α dan Mb (ELISA), ekspresi relatif mRNA Mb dan BNP-45 (real time RT-PCR satu langkah).Hasil : Kadar protein HIF-1α meningkat pada paparan hipoksia hipobarik dan terus menurun hingga induksi hipoksia hipobarik intermiten 3 kali (ANOVA, p=0,0437). Ekspresi mRNA dan protein Mb meningkat pada paparan hipoksia hipobarik dan terus menurun hingga induksi hipoksia hipobarik intermiten 3 kali (ANOVA, p=0,0283; 0,0170), dan keduanya berkorelasi kuat (Pearson, r=0,6307). Ekspresi mRNA BNP-45 meningkat pada paparan hipoksia hipobarik intermiten 1 kali dan terus menurun hingga induksi hipoksia hipobarik intermiten 3 kali (ANOVA, p=0,0314). Hasil uji korelasi juga menunjukkan hubungan yang kuat antara protein HIF-1α dengan ekspresi mRNA Mb, namun sangat lemah dengan ekspresi mRNA BNP-45.Kesimpulan : Terjadi respons adaptasi HIF-1α, Mb dan BNP-45 pada paparan hipoksia hipobarik intermiten pada jantung tikus. Protein HIF-1 meregulasi ekspresi Mb dan BNP-45.

---

Background: The study analyzed the adaptive responses of heart tissue after induction of intermittent hypobaric hypoxia (IHH) in rat. The transcription factor HIF-1 is important to overcome hypoxia condition, which consist of 2 subunits: HIF-1α and HIF-1β in a state of hypoxia form heterodimers and regulate the expression of a number of target genes to overcome hypoxia. Hypoxia, especially continuous one, may lead the heart to hypertroptive state. The heart will overcome the situation through the establishment of Mb and BNP-45.

Methods: Twenty five male Sprague-Dawley rats were exposed to IHH in a hypobaric chamber in Indonesian Air Force Institute of Aviation Medicine, for 50 minutes at various altitudes, 1 week interval for 4 times (day 1, 8, 15 and 22). HIF-1α and Mb protein were measured with ELISA. mRNA expression of Mb and BNP-45 were measured with one step real time RT-PCR.

Results: HIF-1α protein levels increased after induction of hypobaric hypoxia and continues to decrease after induction of intermittent hypobaric hypoxia 3 times (ANOVA, p=0.0437). mRNA expression and protein of Mb increased after induction of hypobaric hypoxia and continues to decrease after induction of intermittent hypobaric hypoxia 3 times (ANOVA, p=0.0283; 0.0170), and both are strongly correlated (Pearson, r=0.6307). mRNA expression of BNP-45 increased after induction of intermittent hypobaric hypoxia 1 time and continues to decrease after induction of intermittent hypobaric hypoxia 3 times (ANOVA, p=0.0314). Correlation test results also showed a strong relationship between HIF-1α protein with mRNA expression of Mb, but very weak with mRNA expression of BNP-45.

Conclusions: Adaptive response of HIF-1α, Mb and BNP-45 occurs after induction of intermittent hypobaric hypoxia in rat heart. HIF-1 protein regulated the expression of Mb and BNP-45."

"ABSTRAKTujuan tesis ini adalah mengetahui pengaruh suplementasi sitikolin 1000 mg per hari selama 4 minggu terhadap hasil elektroretinografi pada pasien NPDR non-proliferative diabetic retinopathy . Desain penelitian ini adalah uji klinis acak terkontrol tersamar ganda. Tiga puluh delapan mata yang memenuhi kriteria inklusi dan eksklusi dirandomisasi untuk masuk ke dalam kelompok plasebo P-NPDR atau sitikolin 1000 mg S-NPDR . Pada akhir penelitian didapatkan 18 mata pada kelompok sitikolin dan 16 mata pada kelompok plasebo. Keluaran primer penelitian ini adalah nilai amplitudo P50 dan N95 PERG within group dan intergroup yang dinilai pada baseline dan 4 minggu paska pemberian intervensi. Analisis hasil didapatkan pada S-NPDR didapatkan perbaikan nilai rerata amplitudo N95 sebelum terapi, 4.85 1.9-10.3 V, dan setelah terapi, 5.7 1.9-17.1 V, P = 0.04 . Terdapat kecenderungan perbaikan amplitudo P50 yang lebih baik pada kelompok T-NPDR dan perbaikan amplitudo N95 yang lebih baik pada S-NPDR yang tidak bermakna secara statistik P = 0.45; P = 0.35.

---

ABSTRACT

The purpose of this study was to determine the effect of citicoline 1000 mg oral supplementation given for 4 weeks on electroretinography abnormalities in patients with NPDR non proliferative diabetic retinopathy . The study design was a double blind randomized controlled clinical trial. Thirty eight patients who matched the inclusion and exclusion criteria were randomized into two groups the plasebo P NPDR and citicoline C NPDR . In the end, there were 18 eyes in citicoline group and 16 eyes in plasebo group. The primary outcome was P50 and N95 amplitude in PERG within group and intergroup which were taken at the baseline and 4 weeks after treatment. Results at the end of treatment, the N95 amplitude in C NPDR showed improvement, 4.85 1.9 10.3 V, before treatment to 5.7 1.9 17.1 V, after treatment with P 0.04. In P NPDR showed positive trend in P50 amplitude while in C NPDR showed positive trend in N95 amplitude, but these values were not statistically significant P 0.45 P 0.35."

"ABSTRACTKondisi hipoksia menyebabkan stabilisasi HIF-1α, yang mengatur ekspresi beberapa gen seperti Carbonic Anhydrase 9 (CA9). CA9 merupakan enzim yang memediasi homeostasis pH melalui reaksi reversibel CO2 dan H2O menjadi HCO3 - and H+.Aktivitas enzim CA pada sel tubulus ginjal yang meningkat seiring dengan kondisi hipoksia menyebabkan peningkatan ion H+ dalam urin. Pada kondisi tersebut, sel tubulus ginjal akan mensekresikan NH3 (amonia) ke dalam cairan tubulus sebagai penyangga sehingga sekresi H+ dari sel tubulus dapat terus berlangsung. NH3 akan bereaksi dengan H+ membentuk NH4 + (amonium). NH3 dihasilkan dari deaminasi glutamin oleh enzim glutaminase yang disintesis di dalam sel tubulus. 25 tikus jantan Sprague Dawley (Rattus norvegicus L.) dibagi menjadi 5 kelompok. Sebanyak 20 tikus diinduksi dengan hipoksia (O2 10%) sebagai pemicu stabilisasi HIF-1α dan diobservasi selama 1, 3, 5, dan 7 hari pasca induksi. Kelompok kontrol tidak mendapat perlakuan induksi hipoksia. Semua tikus kemudian didekapitasi. Dari sampel ginjal, dilakukan pemeriksaan ekspresi mRNA HIF-1α, CA9, dan Gls1 (dengan real time RT-PCR), protein HIF-1α (dengan ELISA) serta aktivitas enzim CA total dan glutaminase. Ekspresi tertinggi mRNA HIF-1α, dan Gls1 dicapai pada hari ke-5 sedangkan ekspresi tertinggi mRNA CA9, dicapai pada 7 hari pasca induksi hipoksia. Konsentrasi protein HIF-1α sendiri tidak berbeda bermakna untuk semua kelompok. Aktivitas tertinggi enzim CA dan glutaminase dicapai pada kelompok 5 hari. Peningkatan mRNA dan aktivitas CA9 dan Gls1 pada kondisi hipoksia menunjukkan peran penting keduanya dalam menjaga homeostasis pH pada ginjal. Peningkatan mRNA CA9 dan Gls1 juga seiring dengan peningkatan mRNA HIF-1α yang menunjukkan bahwa ada korelasi positif antara HIF-1α dengan kedua gen tersebut.

---

ABSTRACT

Hypoxia can stabilize HIF-1α, a protein that regulates many of genes involved in angiogenesis, erythropoiesis, glycolysis, iron metabolism, and cell survival. One of these genes is Carbonic Anhydrase IX (CA IX). CA IX is an enzyme which maintains pH homeostasis by converting CO2 and H2O into HCO3 - and H+ ions.

The activity of Carbonic Anhydrase in renal tubulus cell can cause an increase of H+ ion in urine. H+ ion must be buffered to prevent its gradient increase that can obstruct H+ secretion. In kidney, NH3 and H+ play an important role to form NH4 +, so secretion of H+ will be continued for pH homeostasis. Glutaminase function in conversion of glutamine into glutamate and NH3 was observed in this study. The samples were obtained from kidney tissues of rat exposed to chronic systemic hypoxia (O2 10% : N2 90%) for 1, 3, 5 and 7 days. Expression of HIF-1α, CA9, and Gls1 mRNA were examined by real time RT-PCR. HIF-1α protein was measured using Cusabio® ELISA, as with the specific activity of CA and glutaminase were measured by spectrophotometer. The maximum levels of HIF-1α and Gls1 mRNA, were achieved in 5 days after hypoxia induction, meanwhile CA9 mRNA expression was found to be the highest at 7 days after induction. HIF-1α protein did not differ significantly among the groups. The maximum CA and glutaminase specific activity was measured at 5 days group. The increase of mRNA and specific activity of both CA and Gls1 in hypoxia shows that both of these protein have an important role for encountering the changing of pH in kidney, especially in the first 5 days. The significant increase of CA9 and Gls1 mRNA is also in line with the increase of HIF-1α mRNA. It can be concluded that expression of CA9 and Gls1 gene is regulated by HIF-1α, although the HIF-1α protein have no difference among the groups."