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Properties of Folate Binding Protein Purified from Cow’s Milk . SUBANDRATE; DWIRINI RETNO GUNARTI; MOHAMAD SADIKIN
HAYATI Journal of Biosciences Vol. 19 No. 3 (2012): September 2012
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.301 KB) | DOI: 10.4308/hjb.19.3.105

Abstract

Folic acid played an important role in the metabolism of the body. To measure the serum folic acid levels could use the folate binding protein (FBP) from cow’s milk with a technique analogous to ELISA.  The aims of this study were to identify characteristics of FBP from cow’s milk and binding capacity of FBP to folic acid and to purify FBP from other whey protein passed through DEAE-cellulose chromatography column. Each of DEAE-cellulose peaks was passed in affinity chromatography column. FBP was released from affinity column with sodium acetate buffer pH 3.5. The purity of obtained FBP was demonstrated by a single spot in SDS-PAGE analysis and the estimated molecular weight of FBP was around 31 kDa. Our study indicated that 1 mol FBP bound 1 mol folic acid. Alkylation with iodoacetic acid decreased the binding capacity of FBP which suggested the presence of a–SH or imidazol group in its active site. The importance of disulfide bridge was proven by decreasing of folate binding capacity of FBP after b-mercaptoethanol treatment. In contrary, the folate binding didn need Ca2+ ion, as indicated by EDTA test which gave the same result as control.
Effect of Rice Bran Oil on the Lipid Profile of Mild-Moderate Hypercholesterolemic Male Aged 19-55 year Noor Diah Erlinawati; Samuel Oetoro; Dwirini Retno Gunarti
World Nutrition Journal Vol. 1 No. 1 (2017)
Publisher : Indonesian Nutrition Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25220/WNJ.V01i1.0010

Abstract

Correlation of Beta Carotene and Nutrition Status With Malondialdehyde Levels in Breastfeeding Mother Katya Saphira; Nurul Ratna Mutu Manikam; Dwirini Retno Gunarti
World Nutrition Journal Vol. 3 No. 1 (2019): Volume 03 Issue 1 Include Supplements Oral Presentation Abstracts of 14th Sympo
Publisher : Indonesian Nutrition Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25220/WNJ.V03.i1.0011

Abstract

Background : Malondialdehyde (MDA), one of the products of polyunsaturated fatty acid (PUFA) peroxidation detected in breast milk (BM). MDA levels depicted BM’s oxidative status. BM oxidative balance could prevent oxidative stress in babies. MDA could be influenced by antioxidant food source such as beta carotene as well as body mass index (BMI).Objective: To analyze beta carotene intake and BMI and their correlation with BM MDA levels in nursing motherMethods: Eighty breastfeeding mothers who were 20–40 years old, came to Cilincing and Grogol Petamburan Public Health Centre February–April 2019 and had 1–6 months old babies were enrolled in this cross-sectional study. The BM was extracted in the next day. Mothers were asked to empty one of the breast 2 hours prior to extraction. Beta carotene intake was assessed using semi quantitative food frequency (SQ-FFQ). Body weight and height was measured on the first day. The BM MDA levels were assessed using thiobarbituric acid reactive substance (TBARS) assay. The correlation of beta carotene intake and MDA as well as BMI and MDA was assessed using Spearman test with level of significance of p<0.05.Results: Subject’s median age was 27 (20-35) years old, median BMI was 23.21 (15.25-39.55) kg/m2. Beta carotene’s median intake was 8039.8 (1697.7–34028) mg/day with 72.5% of the subjects were considered low intake. BM MDA level’s median was 1.953 (0.739-4.928) nmol/ml. Beta carotene intake (r = 0.247, p = 0.027) and BMI (r = 0.285, p = 0.010[DN4] ) had a weak correlation with BM MDA level.Conclusion: The beta carotene intake and the BMI of the subjects correlate significantly with the BM MDA level. It showed that the mother’s intake and body composition contribute to the oxidant level in BM, therefore influenced the level of oxidative stress transferred to the babies.
Karakteristik dan Peran Protein Ikat Folat (PIF) Subandrate Subandrate; Dwirini Retno Gunarti; Mohamad Sadikin
JURNAL KEDOKTERAN DAN KESEHATAN Vol 3, No 1 (2016)
Publisher : Fakultas Kedokteran Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Asam folat merupakan kelompok vitamin B. Asam folat terikat dengan suatu protein yang disebut protein ikat folat (PIF). PIF merupakan suatu glikoprotein dengan 222 residu asam amino dan berat molekul sekitar 31000 Dalton. Struktur tiga dimensi PIF dipertahankan oleh enam sampai delapan jembatan disulfida. PIF memiliki kemampuan mengikat asam folat dengan perbandingan ikatan 1:1 mol. Situs aktif PIF mengandung gugus imidazol atau gugus sulfhidril. Kofaktor ion kalsium tidak dibutuhkan PIF dalam mengikat asam folat. Di dalam tubuh, PIF berperan menghimpun, mengangkut, dan membantu penyimpanan, penggunaan serta pendistrubusian asam folat ke jaringan. PIF juga berperan mengurangi ekskresi asam folat di ginjal dan meningkatkan penyerapan asam folat di intestinum. Dalam bidang kedokteran PIF dapat dimanfaatkan untuk mengukur kadar asam folat serum dengan metode analog ELISA.
Protease from Courgette (Luffa Acutangula L (Roxb)): Isolation, Purification, and Some Characteristics Mike Permata Sari; Dwirini Retno Gunarti; Mohamad Sadikin
Jurnal Sumberdaya Hayati Vol. 5 No. 2 (2019)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.5.2.64-71

Abstract

The Courgette or oyong (Luffa acutangula L. (Roxb)) is member of Cucurbitaceae mainly used as vegetable. Beside used as vegetables, courgette aslo used as keratolytic agent. This fact is supposed that this vegetables contain protease. This research is succeed to purified courgette’s protease by four step. That was precipitate by 70% ammonium sulphate saturation, purification using DEAE cellulose ion exchange chromatography and gel filtration chromatography using sephadex G-100 and G-75. Purified courgette’s protease had 81,922 U/mg for specific activity and 34 kDa molecular weight. This enzyme had the characteristic such as activated optimally at 37oC, pH 7 and 10 minute duration time. This enzyme activity can decrease by PMSF and H2O2, its remarkable that courgette protease is serine protease and had the thiol group in its structure. The ability to digest food proteins materials like boiled meat and boiled white egg by courgette protease proves that the courgette protease enzyme is could be used in enzyme replacement therapy in mild digestion problem.
The Effects of Physical Exercise on Spatial Learning and Serotonin Levels in the Brain of Adult Rats Annisa Rahmah Furqaani; Sri Redjeki; Dwirini Retno Gunarti
Global Medical & Health Communication (GMHC) Vol 6, No 2 (2018)
Publisher : Universitas Islam Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.853 KB) | DOI: 10.29313/gmhc.v6i2.2564

Abstract

Physical exercise can enhance tryptophan transport into the brain so that it will also increase serotonin levels in the brain. Therefore, it may influence many brain functions, such as learning and memory. This study aimed to determine the effect of physical exercise on spatial learning and serotonin levels in the brain of adult male Wistar rats. Biochemistry Laboratory of Department of Biochemistry & Molecular Biology, Faculty of Medicine, Universitas Indonesia was the study place which conducted in January–April 2013. Sixteen adult male rats randomly divided into two groups, the control group, and the treatment group. Physical exercise for the treatment group for four weeks using the animal treadmill at 15 m/min in speed for 15 minutes in the 1st week and 25 minutes for the next three weeks. Learning and memory test using water-E maze apparatus once a week. At the end of the exercised period, animals were sacrificed, and the brains were isolated. The measurement of serotonin and tryptophan levels was done using high-performance liquid chromatography (HPLC). The results showed that physical exercise improved animals performance in learning and memory test, exercised group made fewer errors at third and fourth week (p<0.05). Serotonin levels in the brain of exercised group was significantly higher than that in control group (p<0.05). These results indicated that the enhancement of serotonin levels in the brain induced by physical exercise is involved in improving spatial learning and memory. PENGARUH LATIHAN FISIK TERHADAP KEMAMPUAN BELAJAR SPASIAL DAN KADAR SEROTONIN PADA OTAK TIKUS DEWASALatihan fisik diketahui dapat meningkatkan transpor triptofan melewati sawar otak sehingga dapat meningkatkan kadar serotonin di otak. Oleh karena itu, latihan fisik berperan memengaruhi berbagai fungsi otak termasuk proses belajar dan memori. Penelitian ini bertujuan mengetahui pengaruh latihan fisik aerobik dengan intensitas yang ringan terhadap kemampuan belajar spasial serta kadar serotonin pada otak tikus Wistar dewasa. Penelitian ini dilakukan di Laboratorium Biokimia, Departemen Biokimia & Biologi Molekuler, Fakultas Kedokteran, Universitas Indonesia, Jakarta periode Januari–April 2013. Enam belas ekor tikus jantan dewasa dibagi secara acak menjadi dua kelompok, yaitu kelompok kontrol dan kelompok perlakuan. Latihan fisik diberikan kepada kelompok perlakuan selama 4 minggu menggunakan animal treadmill dengan kecepatan 15 m/menit selama 15 menit pada minggu pertama dan 25 menit pada 3 minggu berikutnya. Uji belajar dan memori dengan perangkat water-E maze dilakukan satu kali/minggu. Setelah masa latihan fisik selesai, hewan coba dikorbankan dan jaringan otak diisolasi. Pengukuran kadar serotonin dan triptofan pada otak dilakukan menggunakan kromatografi cair kinerja tinggi (KCKT). Hasil penelitian menunjukkan bahwa jumlah kesalahan yang dilakukan oleh kelompok perlakuan lebih sedikit secara signifikan pada uji belajar dan memori ke-3 dan ke-4 (p<0,05). Kadar serotonin lebih tinggi secara signifikan pada otak kelompok perlakuan (p<0,05). Hasil penelitian ini mengindikasikan bahwa peningkatan kadar serotonin pada otak yang diinduksi oleh latihan fisik aerobik intensitas ringan terlibat dalam meningkatkan kemampuan belajar dan memori spasial.
Morphology and disaccharidase activity of small intes- tinal mucosa in post-weaning-induced malnourished rats and after realimentation Rustadi Sosrosumihardjo; Agus Firmansyah; Asri Rasad; Daldiyono Harjodisastro; Endi Ridwan; Septilia Inawati Wanandi; Dwirini Retno
Paediatrica Indonesiana Vol 46 No 5 (2006): September 2006
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.995 KB) | DOI: 10.14238/pi46.5.2006.229-35

Abstract

Background The most common cause of failure to thrive in in-fants is malnutrition which causes histological and biochemicalchanges of small intestine. Studies on histology and enzyme ac-tivity of small intestinal mucosa were not much developed.Objective To study about histology and disaccharidases activity ofsmall intestinal mucosa in post-weaning-induced malnourished rats.Methods We used Sprague-Dawley white rats as the subjects ofthis study with post test-control group design. The study was per-formed at the CentER for Research of Food and Nutrition Devel-opment from April 2003 to December 2004.Results There were a decrease of body weight (hypotrophy nor-moblastic) and an increase of disaccharidase activity of small in-testinal mucosa in post-weaning-induced malnourished rats. Afterrealimentation, there were an increase of body weight, an improve-ment of the hypotrophy, and a decrease of the enzyme but theystill cannot reach normal condition.Conclusion In malnourished rats, there are decrease of bodyweight hypotrophy normoblastic and increase of disaccharidasesactivity of intestinal mucosa that are improved after realimentation
Asam Folat: Peran dalam Metabolisme dan Metode Pemeriksaan Subandrate Subandrate; Medina Athiah; Safyudin Safyudin; Ella Amalia; Irsan Saleh; Hermansyah Hermansyah; Dwirini Retno Gunarti
Majalah Kedokteran Andalas Vol 45, No 1 (2022): Online Januari 2022
Publisher : Faculty of Medicine, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/mka.v45.i1.p51-62.2022

Abstract

Tujuan: Untuk mengetahui peran asam folat dalam metabolisme dan metode pemeriksaan asam folat serum. Metode: Artikel ini dibuat dengan mengumpulkan sumber rujukan dari Sinta, Google Scholar, Pubmed, dan ScienceDirect.  Artikel-artikel yang berisi mengenai asam folat (folic acid) atau folat (folate) dan metode pemeriksaan  asam folat (folate detection method, folate analysis method) tahun 2005-2020 dikumpulkan kemudian dibahas dan ditarik kesimpulan secara umum. Hasil: Bentuk aktif asam folat, tetrahidrofolat, berperan dalam metabolisme purin, pirimidin (timin), dan metionin dengan cara mendonorkan unit satu karbon (metil, metilen, metenil, formimino atau formil). Kadar asam folat serum normal adalah 6-20 ng/ml. Beberapa metode digunakan untuk memeriksa kadar asam folat serum yakni mikrobiologi, HPLC dan protein binding assay. Metode mikrobiologi merupakan baku emas, tetapi membutuhkan waktu yang lama, mudah terkontaminasi dan perlu tenaga mikrobiologi khusus.  Metode HPLC memberikan hasil yang lebih cepat, tetapi mahal dan kurang sensitif. Metode protein binding assay merupakan metode baru yang menggunakan protein ikat folat. Metode ini memiliki sensitivitas dan spesifisitas yang baik. Kekurangan pada metode ini adalah penyimpanan reagen dan kalibrasi. Kesimpulan: Asam folat dibutuhkan dalam metabolisme nukleotida dan asam amino. Metode pemeriksaan asam folat diharapkan dapat dikembangkan untuk pemeriksaan asam folat yang lebih sederhana, murah dan cepat.
Potential Role of Propolis Flavonoid on Malondialdehyde and Superoxide Dismutase Levels on Endometriosis Mayasari, Citra Krisna; Retno Gunarti, Dwirini; Octovia, Lily Indriani
Journal La Medihealtico Vol. 5 No. 2 (2024): Journal La Medihealtico
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamedihealtico.v5i2.1202

Abstract

Endometriosis is a prevalent gynecological condition that affects around 10% of women within the reproductive age group globally. Recent research indicates that oxidative stress plays a significant role in the development of endometriosis. The present administration of progestin hormone treatment has been shown to induce additional oxidative stress, which is characterized by elevated levels of oxidative stress indicators, including malondialdehyde (MDA), and a reduction in the enzymatic antioxidant superoxide dismutase (SOD). The presence of hormonal imbalances in conjunction with these alterations fosters an environment conducive to the metastasis of endometrial cells. This process initiates inflammatory pathways, angiogenesis, and the formation of lesions and tumors, ultimately exacerbating the state of endometriosis. Research findings indicate that propolis has inherent antioxidant properties, characterized by a high concentration of flavonoid components and phenolic acids. Propolis contains active compounds that have the ability to trap free radicals by forming more stable molecules. Propolis has anti-inflammatory, antimicrobial, and immunomodulatory characteristics, hence potentially enhancing the patient's oxidative stress state, mitigating morbidity, and reducing the duration of hospitalization. This research aims to assess the possible impact of flavonoids found in propolis on the treatment of endometriosis.
Isolation and Purification of Thiamine Binding Protein from Mung Bean GUNARTI, DWIRINI RETNO; RAHMI, HANIFAH; SADIKIN, MOHAMAD
HAYATI Journal of Biosciences Vol. 20 No. 1 (2013): March 2013
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (78.56 KB) | DOI: 10.4308/hjb.20.1.1

Abstract

Thiamine has fundamental role in energy metabolism. The organs mostly sensitive to the lack of thiamine levels in the body are the nervous system and the heart. Thiamine deficiency causes symptoms of polyneuritis and cardiovascular diseases. Because of its importance in the metabolism of carbohydrates, we need to measure the levels of thiamine in the body fluids by using an easy and inexpensive way without compromising the sensitivity and selectivity. An option to it is thiamine measurement based on the principle of which is analogous to ELISA, in which a thiamine binding protein (TBP) act by replacing antibodies. The presence of TBP in several seeds have been reported by previous researchers, but the presence of TBP in mung beans has not been studied. This study was aimed to isolate and purify TBP from mung bean. The protein was isolated from mung bean  through salting out by ammonium sulphate of 40, 70, and 90% (w/v). TBP has a negative charge as shown by cellulose acetate electrophoresis. The result obtained after salting out by ammonium sulphate was further purified bymeans of DEAE-cellulose chromatography and affinity chromatography. In precipitation of 90% of salting out method, one peak protein was obtained by using affinity chromatography. The protein was analyzed by SDS PAGE electrophoresis. The result of SDS PAGE electrophoresis showed that TBP has a molecular weight of 72.63 kDa.