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All Journal BALI MEDICAL JOURNAL (BMJ) Majalah Kedokteran Bandung Dentika Dental Journal Global Medical and Health Communication BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Buletin Farmatera SRIWIJAYA JOURNAL OF MEDICINE Jurnal Respirologi Indonesia Jurnal Keperawatan dan Fisioterapi (JKF) JURNAL FARMASIMED (JFM) Sumatera Medical Journal KLOROFIL: Jurnal Ilmu Biologi dan Terapan Jurnal Endurance: Kajian Ilmiah Problema Kesehatan

Yahwardiah Siregar

Department Of Biochemistry, Faculty Of Medicine, Universitas Sumatera Utara, Medan

Author-ID : 382021

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Dentistry Health Professions Immunology & microbiology Medicine & Pharmacology Neuroscience Nursing Public Health Other

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ANALISIS KADAR VITAMIN D PADA MAHASISWA INSTITUT KESEHATAN MEDISTRA DAN MAHASISWA FAKULTAS KEDOKTERAN GIGI UNIVERSITAS SUMATERA UTARA Miftahul Zannah; Yahwardiah Siregar; Ariyati Yosi
JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF) Vol 2 No 1 (2019): Jurnal Keperawatan dan Fisioterapi (JKF)
Publisher : Fakultas Keperawatan dan Fisioterapi Institut Kesehatan Medistra Lubuk Pakam

Vitamin D levels influenced by many factors like formation, nutritions, malabsorbtion and degradation of 25(OH)D. Formation factors is one of important for metabolism vitamin D. Vitamin D is the main hormone regulating calcium phosphate homeostasis and mineral bone metabolism. Loss of muscle mass and fraity are prevalent in many chronic disease. The study group consisted of 31 samples from Institut Kesehatan Medistra (n=12) and Fakultas Kedokteran Gigi USU (n=19). Vitamin D levels were measure with ELISA (Diagnostic Biochem Canada). Most age for student Institut Kesehatan Medistra is 21 years old and student Fakultas Kedokteran Gigi USU is 22 years old. Frequency of Vitamin D level student Institut Kesehatan Medistra is 91,7% (deficiency) and student Fakultas Kedokteran Gigi USU 84,2%(deficiency). There was significant difference in vitamin D levels between two group with significant (p=0,018).

PENGARUH PEMBERIAN D-GALAKTOSA TERHADAP PERUBAHAN BERAT BADAN MENCIT JANTAN Indah Permata Sari; Muhammad Ichwan; Yahwardiah Siregar
JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF) Vol 2 No 2 (2020): Jurnal Keperawatan dan Fisioterapi (JKF)
Publisher : Fakultas Keperawatan dan Fisioterapi Institut Kesehatan Medistra Lubuk Pakam

D-galactose is aldohexose which occurs naturally in the body, including in the brain which is found in lactose disaccharides in honey, beets and milk products. Needed in the body for lactose formation during the process of lactogenesis. Provision of large amounts of D-galactose can cause oxidative damage to various tissues and organs. The purpose was to see changes in body weight in male rats after being given a D-galactose injection. Samples using male mice aged 8 weeks with a weight of Â± 30 grams, the number of samples was 6 mice swiss webster strain. intra-peritoneal injection of D-galactose is given for 6 weeks every day (150 mg / kg / bb). The results of this study indicate that the statistical analysis is significant p <0.05 (p = 0.016). The conclusion after being given injection of D-galactose for 6 weeks every day intra peritoneally was found D-galactose had an effect on the weight gain of male mice.

PERAN POLIMORFISME GEN MATRIKS METALLOPROTEINASE-9 DENGAN KEJADIAN PENYAKIT PARU OBSTRUKTIF KRONIK Wilson Arthur Zein; Yahwardiah Siregar; Amira P Tarigan
JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF) Vol 3 No 1 (2020): Jurnal Keperawatan dan Fisioterapi (JKF)
Publisher : Fakultas Keperawatan dan Fisioterapi Institut Kesehatan Medistra Lubuk Pakam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35451/jkf.v3i1.427

Excessive secretion of MMP-9 is one of the cause of COPD is which can cause undesirable lung tissue degradation. Increased expression of MMP-9 is associated with increased gene promoter activity. The purpose of this study was to determine the role of mettaloproteinase-9 matrix gene polymorphisms with COPD events. This was a case-control study. With a total sample of 60 patients consisting of 30 COPD patients and 30 non-COPD patients. Samples were amplified by PCR (Polymerase Chain Reaction) The results of DNA amplification were digested with SphI restriction enzyme to see the allele variant of MMP-9 C-1562T. Visualization of restriction results with 2% agarose gel electrophoresis will show 2 bands on the T allele (188bp, 247bp), 1 band on the C allele (435bp). The results obtained were homozygous CC variants in COPD 20 (66.67%) and non-COPD 21 (70%). Heterozygous variant of CT 10 (33.33%) in COPD and 9 (30%) in non-COPD. TT variant is not found at all. Based on the results obtained by the most CC homozygous variants in COPD (66.67%) and non-COPD (70%) and no association was found between MMP-9 polymorphism and COPD events (p> 0.05). Based on the results of this study, there is no significant relationship that we can conclude.

EFEK LATIHAN FISIK TERHADAP KADAR MALONDIALDEHID PADA HEWAN MODEL PENUAAN Indah Permata Sari1; Muhammad Ichwan; Yahwardiah Siregar
Jurnal Endurance Vol. 6 No. 1 (2021): Jurnal Endurance : Kajian Ilmiah Problema Kesehatan
Publisher : LLDIKTI Wilayah X

Aging is a natural process that is characterized by decreased function. In the aging process a decline in the ability of reactive oxygen species. This causes damage to the membrane lipids that cause a decrease in function of the body's organs. Lipid oxidation process in the membrane because free radicals produce lipid peroxidation such as malondialdehyde which is used as a marker of oxidative stress. Regular physical exercise can overcome the negative effects of oxidative stress. To conduct studies on aging, animal models are used. One of the animal models used is the aging induction model by giving D-galactose. Metabolites from d-galactose can induce aging by causing oxidative stress. The purpose of this study was to determine the effect of physical exercise on reducing malondialdehyde levels in an aging animal model induced by D-galactose. This research was experimental in-vivo with a post test only research design. The research sample of 8 weeks old swiss webster mice, consisted of 10 treatment groups. The results of studies on animal models of aging induced D-galactose on malondialdehyde levels after being treated for 6 weeks from the statistical results obtained p value ≥ 0.05 was not significant. However, there was a significant decrease in MDA levels in the D-galactose + physical exercise group

STUDI PRELIMINARI TENTANG PENGARUH D-GALAKTOSA DALAM MENGINDUKSI STRES OKSIDATIF PADA MENCIT JANTAN GALUR OUTBRED FK USU Bintang, Siti Sarah Bintang Sarah; Siregar, Yahwardiah; Ichwan, Muhammad
Jurnal FARMASIMED (JFM) Vol 2 No 1 (2019): Jurnal Farmasimed (JFM)
Publisher : Fakultas Farmasi Institut Kesehatan Medistra Lubuk Pakam

Abstract Oxidative stress occurs due to imbalance of free radicals over antioxidant level in the body. This condition causes lipid peroxidation and DNA damage. D-Galaktosa is The mechanism of oxidative stress induced by d-galactose occurs in the subcellular, especially in the brain's mitochondria. Increasing the concentration of d-galaktosa is oxidized by galaktosa oxidase to form hydrogen peroxide (H202) which causes a decrease in superoxide dismutase (SOD). H202 reacts with reduced iron and forms hydroxide ions (OH-). Objective: The aim of this study was to determine the effect of d-galaktosa induction on oxidative stress levels (MDA) in male mice. Methods: Methods of samples of mice given d-galaktosa and blood collection from the heart were carried out at the Pharmacology Laboratory of the Faculty of Medicine, University of North Sumatra. Results: The results showed that administration of d-galaktosa, through intraperitonial injection every day for 6 weeks, had an effect on the levels of oxidative stress in male mice. Conclusion: The results of this study indicate that administration of d-galaktosa, through intraperitonial injection every day for 6 weeks, has an effect on levels of oxidative stress in male mice.

ApaI Vitamin D Receptor Gene Polymorphisms in Psoriasis Oentari, Widyaningsih; Roesyanto-Mahadi, Irma D; Siregar, Yahwardiah
Buletin Farmatera Vol 6, No 1 (2021)
Publisher : Universitas Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/bf.v6i1.6528

Psoriasis is a chronic autoimmune skin disorder that is an autoimmune disease and still considers a global problem. This condition is suspected to be contributed by genetic and environmental factors. Several studies have shown an association between vitamin D gene receptor polymorphisms and the risk of psoriasis. This study was an observational study, which involved 64 research subjects, who were psoriasis patients. Each subject was interviewed and went through physical examination, also Polymerase Chain Reaction - Restriction Fragment Length Polymorphism (PCR-RFLP) examination to determine ApaI (rs7975232) vitamin D receptor gene polymorphism. After the tabulation of the data, we found that the age of psoriasis onset in this study was 21 to 40 years old with an average of 34.40 14.98 years old. The majority of our subjects ApaI VDR gene polymorphism genotype was aa (53.1%). This is consistent with the results of several studies conducted in Asia.

Distribusi Polimorfisme Gen Transforming Growth Factor Beta-1 (T869C) Pada Pasien Psoriasis Di Kota Medan, Sumatera Utara Rahmiwita, Rahmiwita; Siregar, Yahwardiah; Ichwan, Muhammad
Buletin Farmatera Vol 6, No 1 (2021)
Publisher : Universitas Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/bf.v6i1.3981

Psoriasis is a chronic inflammatory skin disease with a prevalence in the world around 2-3%. TGF-?1 is a growth factor that has a polymorphism in its genes. The TGF-?1 gene polymorphism plays a role in the pathogenesis of psoriasis. This is a descriptive study with a simple random sampling technique. This study was conducted on the strored of DNA specimens collected from 62 psoriasis patients comprising 33 women and 29 men. This study aims to determine the frequency distribution of the TGF-?1 gene polymorphism (T869C) in patients with psoriasis. The TGF-?1 gene polymorphism (T869C) was determined using PCR-based restricted fragment length polymorphism (PCR-RFLP). TC genotype was the most prevalent (50%) of TGF-?1 (T869C) gene polymorphism in psoriasis patients, followed by TT genotype (6.5%) and CC (43.5%). TC variant is the most variant of TGF-?1 (T869C) gene polymorphism in psoriasis sufferers in Medan

Co-Authors Ameta Primasari Ariyati Yosi Bahagia Loebis, Bahagia Bintang Y.M. Sinaga Bintang Y.M. Sinaga, Bintang Y.M. Bintang, Siti Sarah Bintang Sarah Blondina Marpaung Chandra, Vincent Alexander Cut Aria Arina Debby Mirani Lubis Donny Nauphar Elmeida Effendy Essie Octiara Febriani, Husnarika Hadyanto Lim Henny Erina Saurmauli Ompusunggu Heriandi Sutadi Herla Rusmarilin Herla Rusmarilin Herla Rusmarilin Husnarika Febriani Ichwan, Muhammad Indah Permata Sari Indah Permata Sari1 Isra Thristy Jaminsen Sinaga Juwita -, Juwita Lucia Aktalina Melvariani Syari Batubara Miftahul Zannah Muhammad Amin Muhammad Ichwan Noni Novisari Soeroso Nurmiati Amir Oentari, Widyaningsih Ompusunggu, Henny E.S. Ozar Sanuddin Pardede, Sumondang M. Pratiwi, Astrid Siska Pratiwi, Astrid Siska Putri Chairani Eyanoer, Putri Chairani Rahmiwita, Rahmiwita Roesyanto-Mahadi, Irma D Sarah, Dewi Maya Seri Rayani Bangun Siregar, Kamal B. Sori M Sarumpaet, Sori M Soviani, Sri Sri Soviani Sri Soviani Syarifah Rahmatillah Tarigan, Amira Permatasari Umar Zein Wilson Arthur Zein

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