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All Journal Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Biogenesis: Jurnal Ilmiah Biologi
Rahadian Yudo Hartantyo
Department of Tropical Biology, Faculty of Biology, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Neuroscience

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Voluntary Diving Exercise Improves Hippocampus-dependent Learning in Rats Rahadian Yudo Hartantyo; Helen Eko Putro; Epa Yohana Toga Torop; Laksmindra Fitria; Mulyati Mulyati
Biogenesis: Jurnal Ilmiah Biologi Vol 8 No 1 (2020)
Publisher : Department of Biology, Faculty of Sci and Tech, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/bio.v8i1.11168

Abstract

Several physiological alterations that arise in response to hypoxemia conditions when diving are intended to protect oxygen-sensitive organs from the hypoxic condition. Hippocampus, known for its central function in memory formation, is sensitive to hypoxic conditions. This research aimed to study the effect of voluntary diving exercise (VDE) on the hippocampus-dependent learning performance of rats. Rats were divided into control and diving groups, with swim and voluntary diving exercises every day for 60 days, respectively. Observation of memory consolidation was carried out using Morris Water Maze (MWM) and Novel Object Recognition (NOR) tests. In the MWM test, the escape latencies in the diving group were shorter than those in the control group. Consistent results were obtained in the MWM probe trial which the time spent in the target quadrant was significantly longer in the diving group. Moreover, the diving group spent more time exploring the novel object in the NOR test. Based on the results, we can conclude that 60 days VDE significantly improves hippocampus-dependent learning capacity in trained rats.
Animal model for sporadic dementia of Alzheimer’s type (SDAT) using streptozotocin and lipopolysaccharide combinations in rats Rahadian Yudo Hartantyo; Mohammad Rizky Mochtar Hidayat; Abdul Basith Azzam; mulyati mulyati
Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Vol 52, No 3 (2020)
Publisher : Journal of the Medical Sciences (Berkala Ilmu Kedokteran)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (13.528 KB) | DOI: 10.19106/JMedSci005203202003

Abstract

Sporadic dementia of Alzheimer’s type (SDAT) pathogenesis has not been revealed completely due to the difficulty in creating an appropriate animal model. The purpose of this study was to investigate the effect of single-dose intraperitoneal (IP) induction of streptozotocin (STZ) and lipopolysaccharide (LPS) on the β-amyloid levels and the brain function of experimental rats. Eighteen rats were divided into three groups i.e. control, TRE1 (STZ 60 mg.kg-1 BW + LPS 3 mg.kg-1 BW), and TRE2 (STZ 30 mg.kg-1 BW + LPS 1.5 mg.kg-1 BW). The substances were administered in a single dose. Behavioral tests were started at day-30 after injection, we performed Morris water maze (MWM) and novel object recognition (NOR) tests. Afterward, we measured whole brain and serum β-amyloid levels, as one of the biomarkers of Alzheimer’s Disease (AD), using the ELISA method. In MWM tests, the escape latency and time spent in the target quadrant of treatment groups were significantly higher than those in control at the day-5 MWM test and probe trial. The rats in treatment groups have negative discrimination indexes in NOR tasks, indicating that the rats could not remember the familiar object. Intraperitoneal STZ and LPS significantly increase soluble brain β-amyloid levels of treatment groups than those in the control group. In conclusion, the treatment of STZ (60 mg.kg-1 BW) and LPS (3 mg.kg-1 BW) indicated spatial and recognition memory impairment, along with an increase of brain soluble β-amyloid level in rats.
Co-Authors Abdul Basith Azzam Epa Yohana Toga Torop Helen Eko Putro Laksmindra Fitria Mohammad Rizky Mochtar Hidayat Mulyati Mulyati