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All Journal Jurnal Anestesiologi Indonesia Medical Journal of Indonesia Indonesian Journal of Electrical Engineering and Informatics (IJEEI) The Indonesian Biomedical Journal Biomedical Journal of Indonesia Universa Medicina Global Conference Index Eksakta : Berkala Ilmiah Bidang MIPA Majalah Kedokteran Neurosains Biomolecular and Health Science Journal JURNAL KESEHATAN BHAKTI HUSADA Indonesian Journal of Multidisciplinary Science Neurona Jurnal Kedokteran Meditek
Nurhadi Ibrahim
Departemen Fisiologi Kedokteran FK Universitas Indonesia
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NILAI NORMAL LATENSI DAN AMPLITUDO GELOMBANG VISUAL EVOKED POTENTIAL PADA USIA DEWASA Wijaya, Ade; Hakim, Manfaluthy; Ibrahim, Nurhadi; Prihartono, Joedo
Majalah Kedokteran Neurosains Perhimpunan Dokter Spesialis Saraf Indonesia Vol 35 No 2 (2018)
Publisher : PERDOSNI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52386/neurona.v35i2.2

Abstract

NORMATIVE VALUES OF VISUAL EVOKED POTENTIALS` LATENCIES AND AMPLITUDES IN ADULTSABSTRACTIntroduction: Visual evoked potentials (VEP) is used to assess the visual pathway through the optic nerves and brain. VEP wave can be affected by physiological and non-physiological factors; some of which can be controlled, while others cannot. Thus, each VEP laboratory needs its own set of normative values. A normal VEP response to a stimulus is a positive occipital peak that occurs at a mean latency of 100ms. Most of the published normal value originated from abroad where demographical and environment condition are considered less appropriate with Indonesian population.Aims: To established normal value of adult VEP latency and amplitude in Clinical Naeurophysiology Laboratori- um, Neurology Clinic Dr. Cipto Mangunkusumo Hospital, Jakarta.Method: A cross-sectional study on healthy subject between 18 to 55 years old. The anthropometric parameters including age, height, weight, body mass index and head circumference were recorded in all the subjects. VEP was record- ed with a Caldwell Sierra Summit machine and standard silver-silver chloride disc electrodes. A VEP monitor displaying checker board was used to give the pattern reversal stimulus. The VEP parameters recorded were latencies to P100 waves.Results: P100 latencies on 110 subjects, 55 male, and 55 female upon recording at  32’ check size were 117ms in male and 119 ms in female. Upper normal limit of interocular latency difference values in recording at the same size were 10,96ms in male and 10,2ms in female. No significant differences of P100 latencies between male and female were found, but there were significant differences in amplitudes.Discussion: In our population, gender is an important factor affecting P100 amplitudes but not P100 latencies.Keywords: Amplitude, latency, P100, visual evoked potentialABSTRAKPendahuluan: Visual evoked potentials (VEP) digunakan untuk menilai jaras visual dari nervus optikus hingga korteks visual. Gelombang VEP dapat dipengaruhi oleh berbagai faktor fisiologis dan non-fisiologis yang tidak semua dapat dikontrol, sehingga diperlukan referensi nilai normal latensi dan amplitudo gelombang VEP untuk di setiap laborato- rium. Sejauh ini mayoritas referensi berasal dari studi di luar negeri yang secara demografi maupun kondisi setempat dapat kurang sesuai dengan populasi di Indonesia.Tujuan: Mengetahui  nilai normal latensi dan amplitudo gelombang VEP pada subjek dewasa di Laboratorium Neurofisiologi Klinik, Poliklinik Saraf RSUPN Dr. Cipto Mangunkusumo, Jakarta, sebagai referensi pemeriksaan VEP di kemudian hari.Metode: Studi potong lintang pada subjek sehat berusia antara 18 hingga 55 tahun. Subjek diukur antropometri, seperti usia, tinggi badan, berat badan, indeks massa tubuh, dan lingkar kepala. Perekaman VEP menggunakan alat Cald- well Sierra Summit, dan elektroda elektroensefalografi (EEG) standar. Stimulus VEP menggunakan layar berpola dan metode transient pattern reversal. Parameter VEP yang direkam adalah latensi dan amplitudo P100.Hasil: Pada perekaman terhadap 110 subjek yang terdiri dari 55 subjek laki-laki dan 55 subjek perempuan dengan ukuran kotak 32’, nilai batas atas latensi gelombang P100 adalah 117ms pada laki-laki dan 119ms pada perempuan. Nilai batas atas perbedaan latensi interokular pada perekaman dengan ukuran kotak yang sama adalah 10,96ms untuk laki-laki dan 10,2ms untuk perempuan. Tidak ada perbedaan bermakna antara latensi gelombang P100 pada kelompok laki-laki dan perempuan, tetapi terdapat perbedaan amplitudo P100 yang bermakna antara kelompok laki-laki dan perempuan.Diskusi: Terdapat perbedaan yang bermakna pada rerata amplitudo P100 antara subjek laki-laki dan perempuan pada perekaman dengan ukuran kotak 16’ maupun 32’.Kata kunci: Amplitudo, latensi, P100, visual evoked potentials
Intermittent Exposure to Hypobaric Hypoxia Increases VEGF, HIF-1α, and Nrf-2 Expressions in Brain Tissue Wardaya, Wardaya; Sukmawati, Dewi; Ibrahim, Nurhadi; Ferdinal, Frans; Mudjihartini, Ninik; Sadikin, Mohamad; Jusman, Sri Widia A.; Satriotomo, Irawan; Mulyawan, Wawan
The Indonesian Biomedical Journal Vol 17, No 2 (2025)
Publisher : The Prodia Education and Research Institute (PERI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18585/inabj.v17i2.3519

Abstract

BACKGROUND: Hypoxia inducible factor-1α (HIF-1α), nuclear factor erythroid 2-related factor 2 (Nrf-2), and vascular endothelial growth factor (VEGF), play a crucial role as neuroprotective factors. Currently, there is a lack of studies examining the biomolecular responses of the brain to intermittent hypoxia resulting from various pressures. This study was conducted to investigate the physiological responses, histopathological features, and cellular adaptive responses in the brains of rats that were intermittently exposed to hypobaric hypoxic conditions.METHODS: Thirty male Sprague Dawley rats were divided into six groups: a control group and five treatment groups exposed to hypobaric hypoxia. The treatment groups were placed in a hypobaric chamber simulating an altitude of 3,048 meters for 1 hour/day for 1, 7, 14, 21, and 28 days. After exposure, brain tissue was collected for histopathological analysis and protein quantification of HIF-1α, Nrf-2, cytoglobin (Cygb), neuroglobin (Ngb), VEGF, malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT).RESULTS: In the brain, intermittent hypobaric hypoxia significantly increased HIF-1α expression (p=0.000) and its downstream proteins Cygb (p=0.000), and VEGF (p=0.001), with a peak at 14x IHH exposure compared to control. This was followed by a significant increase in Nrf-2 expression (p=0.000), SOD (p=0.000), Gpx (p=0.000), and CAT activity (p=0.000), indicating an adaptive antioxidant response. Conversely, MDA levels was decreased with prolonged exposure, suggesting reduced oxidative damage.CONCLUSION: IHH elevates HIF-1α, Nrf-2, and oxidative stress markers, triggering an adaptive antioxidant response in the rat’s brains.KEYWORDS: HIF-1α, intermittent hypobaric hypoxia, Nrf-2, oxidative stress
Cellular Mechanisms of Spatial Memory Recovery via Hyperbaric Oxygen Therapy in Experimental TBI: A Review Jaslindo, Lieka Nugrahi; Ibrahim, Nurhadi
Biomedical Journal of Indonesia Vol. 11 No. 3 (2025): Vol 11, No 3, 2025
Publisher : Fakultas Kedokteran Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32539/bji.v11i3.267

Abstract

Traumatic Brain Injury (TBI) impairs spatial memory, affects individuals' quality of life, and increases disability and mortality rates. Hyperbaric Oxygen Therapy (HBOT), which delivers nearly 100% oxygen in a pressurised environment, has a potential intervention to ameliorate these cognitive deficits. This narrative review presents evidence from animal studies demonstrating the efficacy of HBOT in enhancing spatial memory in rats with TBI. Specifically, we present evidence that HBOT increases levels of Brain-Derived Neurotrophic Factor (BDNF) and activates the Hypoxia-Inducible Factor 1-alpha (HIF-1α) pathway. These molecular changes foster neuroplasticity and reduce oxidative stress, thereby promoting the repair and growth of dendritic spines and decreasing Reactive Oxygen Species (ROS) levels to prevent neuronal death. By elucidating these mechanisms, this review shows how HBOT contributes to spatial memory recovery in TBI, suggesting a promising therapeutic avenue that need further clinical exploration to refine treatment protocols and evaluate its applicability in human TBI recovery.
Effect of the High-Intensity Interval Training on BDNF Level in Ischemic Stroke Rat Model on the Recovery of Motor Function Yani, Sri; Harris, Salim; Jusuf, Ahmad Aulia; Goenarjo, Roman; Makkiyah, Feda Anisah; Sabita, Rifqi; Ibrahim, Nurhadi
The Indonesian Biomedical Journal Vol 16, No 2 (2024)
Publisher : The Prodia Education and Research Institute (PERI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18585/inabj.v16i2.2911

Abstract

BACKGROUND: Stroke is one of the major causes of disability in the world. High-intensity interval training (HIIT) is known as a novel treatment to promote stroke recovery. However, the results differ in their effects on irisin, which is a regulator of brain-delivered neurotrophic factor (BDNF). Therefore, this study was conducted to investigate the effect of HIIT on BDNF and irisin levels in a rat model of ischemic stroke with middle cerebral artery occlusion (MCAO) induction on recovery motor function.METHODS: Rats were categorized into 4 groups: sham, MCAO, MCAO+moderate-intensity interval training (MIIT), and MCAO+HIIT. MCAO induction was performed to create the ischemic stroke rats model. The motor function was assessed through rotarod and footprint tests. Blood samples were obtained 6 days before MCAO and 14 days after MCAO to examine BDNF and irisin levels with enzyme-linked immunosorbent assay (ELISA). Brain tissue samples were collected 14 days after MCAO for histopathological examination of cortical tissue with hematoxylin-eosin (HE) staining.RESULTS: Rats in the MCAO+HIIT group exhibited an enhanced ability to walk on the rotarod (p=0.016). The stride-length hind paw right in the MCAO+HIIT group demonstrated a noteworthy increase in comparison to baseline value (p=0.036), and the stride-length fore paw right showed a significant increase in both the MCAO+HIIT (p=0.036) and MCAO groups (p=0.034). BDNF significantly improved in the MCAO+MIIT (p=0.043) and MCAO+HIIT groups (p=0.018). The irisin level only showed a significant enhancement in the MCAO+HIIT group (p=0.018).CONCLUSION: HIIT increased motor function, while BDNF level increased with HIIT and MIIT intervention. This preclinical research is useful for supporting the recovery of stroke patients by HIIT intervention.KEYWORDS: BDNF, HIIT, MIIT, irisin, ischemic stroke, MCAO
High-Intensity Interval Training’s Effect on Cognitive Functions Sabita, Rifqi; Siagian, Minarma; Ibrahim, Nurhadi
Indonesian Journal of Multidisciplinary Science Vol. 2 No. 9 (2023): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v2i9.534

Abstract

HIIT has been known to improve cognitive function. In addition to its effect on the hippocampal area. After HIIT training, BDNF levels also increase in the spinal cord, cerebellum and several cortical areas through increasing levels of Insulin-like Growth Factor-1 (IGF-1). In neurons, BDNF is present not only in the cytoplasm, but also near the dendritic spines, which influences their development. BDNF stimulates the process of neuroplasticity, which is manifested in neurogenesis, stimulation of the plasticity of serotoninergic, dopaminergic, cholinergic or noradrenergic neurons, dendritogenesis, and synaptogenesis. Moreover, BDNF facilitates the growth and survival of neurons and microglial cells. It also participates in cell differentiation, potentiation of signal transmission, induction, and maintenance of long-term potentiation of the synapse enhancement. Because of these properties, BDNF enhances cognition and takes part in emotional processes, spatial orientation and learning, as well as body coordination. Evidence suggests that IGF-1 is a major determinant of the effect of physical exercise on BDNF levels and thus on cognition more generally. There is an upregulation of Fndc5 gene expression in skeletal muscle and an increase in irisin after prolonged resistance training in rats and humans following HIIT training. When hippocampal Fndc5 was upregulated during exercise, BDNF and other neuroprotective genes were also activated in the rat hippocampus. Exercise-induced adult hippocampal neurogenesis is associated with increased Fndc5 and BDNF genes thus enhancing cognition. Then, stroke is associated with neuroinflammation that affects the processes of neuroplasticity in the lesion core, penumbra and small areas such as the spinal cord.
Kegel exercises with a guidebook for stress urinary incontinence treatment Hakim, Surahman; Santoso, Budi Iman; Rahardjo, Harrina Erlianti; Setiati, Siti; Kusumaningsih, Widjajalaksmi; Prihartono, Joedo; Ibrahim, Nurhadi; Indriatmi, Wresti; Erwinanto
Medical Journal of Indonesia Vol. 33 No. 2 (2024): June
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13181/mji.oa.247142

Abstract

BACKGROUND Stress urinary incontinence (SUI) is uncontrollable urine leakage when intra-abdominal pressure increases. Behavioral therapy with Kegel exercise is currently the best conservative management recommendation for treating SUI patients. This study aimed to investigate the success of supervised Kegel exercises using the Kegel exercises guidebook in women with SUI. METHODS This quasi-experimental study involved both groups being taught the same regiment of Kegel exercises, but the intervention group was given the Kegel exercises guidebook. After 12 weeks, the compliance, subjective, and objective success rates were evaluated through the patient’s notes, Urinary Distress Inventory-6, Incontinence Impact Questionnaire-7, perineometer, and pad test. RESULTS Patients with a higher level of education had lower compliance to Kegel exercises (p = 0.01; odds ratio [OR] 0.38; 0.18–0.79). No significant difference was observed in the subjective symptom improvement between the two groups. The intervention group had a significantly higher success rate based on objective success by analyzing the 1-hour pad test results. The intervention group was also more adherent (p<0.001; OR 4.78; 2.51–9.0). CONCLUSIONS Patients who received the Kegel exercises guidebook were more compliant and more objectively successful than those who did not receive the manuals.
Co-Authors A.A. Ketut Agung Cahyawan W Ahmad Aulia Amir S. Madjid, Amir S. Amirah Yusnidar Andon Hestiantoro Arjo Tedjo Astuti, Brilliant Putri Kusuma Brown, Paul T. Budi Iman Santoso Citra Ariani, Citra Dewi F. Suniarti Dewi Sukmawati Endang W. Bachtiar Erni Hernawati Purwaningsih, Erni Hernawati Ernie H. Purwaningsih Erwinanto Frans Ferdinal Goenarjo, Roman Hakim, Manfaluthy Hamdani Zain Hamdani Zain Harrina Erlianti Rahardjo, Harrina Erlianti Imelda Rosalyn Sianipar Ina S. Timan, Ina S. Irfannuddin Irfannuddin Jasirwan, Shanty Olivia Jaslindo, Lieka Nugrahi Joedo Prihartono Julia Rahadian Jusman, Sri Widia Azraki Khamelia Malik La Febry Andira Rose Cynthia Legiran Legiran Lina Marlina Lyra Puspa Mahyuddin, Hilman Mailani, Rena Makkiyah, Feda Anisah Martina Wiwie Setiawan Nasrun Martina Wiwie Setiawan Nasrun Minarma Siagian Minarma Siagian Mohamad Sadikin Mohamad Saekhu Muhammad Ramli Ahmad Neng Tine Kartinah Almuktabar Ninik Mudjihartini Paul T. Brown Puspa, Lyra Putu Indah Paramita Adi Putri Rickie Rizal Zainal Ronokusumo, Teguh A.S. Sabita, Rifqi Salim Harris, Salim Santoso, Dewi Irawati Soeria Satriotomo, Irawan Shadrina, Amalia Siti Setiati Sophie Yolanda Sophie Yolanda Sri Redjeki Suci Anggraini Sudigdo Sastroasmoro Surahman Hakim Trinovita Andraini Trinovita Andraini Wanarani Alwin Wardaya Wardaya Wawan Mulyawan Widjajalaksmi Kusumaningsih, Widjajalaksmi Wijaya, Ade Wresti Indriatmi B. Makes Yani, Sri Zenik Kusrini