Rr. Anisa Siwianti Handayani
Biomolecular and Biomedical Research Center, Aretha Medika Utama, Bandung

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Retrospective Analysis on Intraoperative Neuromonitoring (IOM) of Potential Nerve Injury in Scoliosis Correction Surgery Omat Rachmat; Dohar AL Tobing; Ilma Fiddiyanti; Rr. Nur Fauziyah; Jenifer Kiem Aviani; Rr. Anisa Siwianti Handayani
Majalah Kedokteran Bandung Vol 53, No 1 (2021)
Publisher : Faculty of Medicine, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15395/mkb.v53n1.2123

Abstract

Iatrogenic spinal injury resulting in paraplegia or paraparesis after surgical correction of scoliosis deformity is a rare complication but is very detrimental to the patient. Intraoperative Neuromonitoring (IOM) has become the gold standard to monitor surgical procedures which has potential risks to damage the spinal cord. This study  aimed to retrospectively analyze the role of IOM in predicting the severity and extent of neurological injury during and after spinal correction surgery in adult idiopathic scoliosis cases related to surgical variables. This was a retrospective cohort study conducted at Dr. Cipto Mangunkusumo National Central Hospital, Fatmawati Central Hospital, and dr. Drajat Prawiranegara General Hospital during the period of 20 March 2018 to 20 August 2019. The primary outcomes were intraoperative monitoring status and post-operative neurological deficits status. Confounder data on scoliosis correction degree, intraoperative hemorrhage, and type of anesthesia used during surgery were retrieved. Chi-Square statistic was used in the analysis. Out of the ninety three patients eligible for this study, twenty two patients was detected as positive in IOM assessment. Four of the patients were found to be positive for post-operative neuromuscular defect. Thereby it can be concluded that IOM procedure can effectively prevent neurological deficits post-surgery with 81.8% specificity and 95.7% sensitivity among thosepositively detected by IOM. Some of the factors that could potentially influence false positive IOM results such as anesthetic used; dosage and administration procedures; magnitude of the scoliosis correction angle; and amount of bleeding during surgery have to be carefully analyzed.
Antioxidant and Anti-tyrosinase Activities of Aloe vera Rind and Gel Extracts Sonya Bonifacia Mahadi; Rr. Anisa Siwianti Handayani; Wahyu Widowati; Wilsen Wilsen; Yunita Dewani; Edy Fachrial; I Nyoman Ehrich Lister
Global Medical & Health Communication (GMHC) Vol 7, No 3 (2019)
Publisher : Universitas Islam Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.101 KB) | DOI: 10.29313/gmhc.v7i3.4453

Abstract

Aging is a natural process in human that can be characterized by the appearance of black spot on the skin due to hyperpigmentation. Aging may occur due to an excessive amount of free radicals in the body. Antioxidants possess ability to capture free radicals and inhibit tyrosinase which induces skin aging. Aloe vera has been used in traditional medicine because it contains several bioactive compounds that act as antioxidant and prevent aging process. This study aims to determine phytochemical content, antioxidant activity and tyrosinase inhibition activity of Aloe vera rind (AVRE) and gel (AVGE) extract. This research was carried out at the laboratorium of Aretha Medika Utama-Biomolecular and Biomedical Research Center in Bandung city in September–November 2018. Phytochemical assay was determined using modified Farnsworth method. Antioxidant assay was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity and antiaging assay was obtained using tyrosinase inhibition assay. AVRE contains flavonoid, phenol, steroid, and alkaloid. Meanwhile, AVGE contains steroid and alkaloid. IC50 DPPH scavenging activity of AVRE was 113.18 µg/mL followed by AVGE was 291.96 µg/mL. IC50 tyrosinase inhibition activity of AVRE was 65.04 µg/mL followed by AVGE was 111.89 µg/mL. AVRE had more active DPPH scavenging activity and tyrosinase inhibition activity than AVGE. AKTIVITAS ANTIOKSIDAN DAN ANTITIROSINASE KULIT DAN DAGING LIDAH BUAYA (ALOE VERA)Penuaan merupakan proses alamiah pada manusia. Penuaan dapat terjadi akibat kadar radikal bebas yang tinggi di dalam tubuh. Antioksidan memiliki kemampuan memerangkap radikal bebas dan menghambat kerja enzim yang berperan dalam proses penuaan. Lidah buaya (Aloe vera) telah digunakan dalam pengobatan tradisional karena diketahui mengandung senyawa bioaktif yang bermanfaat dalam menangkal radikal bebas dan menghambat penuaan. Penelitian ini bertujuan mengetahui kandungan fitokimia dalam ekstrak etanol kulit lidah buaya (EKLB) dan ekstrak etanol daging lidah buaya (EDLB), mengetahui aktivitas antioksidan, pemerangkapan 2,2-difenil-1-pikrilhidrazil (DPPH), serta aktivitas antitirosinase EKLB dan EDLB. Penelitian ini dilakukan pada September–November 2018 di laboratorium Aretha Medika Utama Biomolecular and Biomedical Research Center (BBRC). Analisis fitokimia dilakukan menggunakan metode Farnsworth yang dimodifikasi. Aktivitas antioksidan dianalisis menggunakan metode pemerangkapan DPPH, sementara uji antipenuaan dilakukan menggunakan metode uji aktivitas antitirosinase. Hasil uji fitokimia menunjukkan EKLB mengandung flavonoid, fenol, steroid, dan alkaloid; sedangkan EDLB mengandung senyawa steroid dan alkaloid. EKLB dan EDLB memiliki aktivitas pemerangkapan DPPH dengan nilai IC50 secara berurutan 113,18 µg/mL dan 291,96 µg/mL. Penghambatan tirosinase EKLB dan EDLB dengan nilai IC50 secara berurutan 65,04 µg/mL dan 111,89 µg/mL. EKLB memiliki aktivitas antioksidan dan penghambatan tirosinase yang lebih baik dibanding dengan EDLB.