Narawut Pakaprot

ORCID: 0000-0002-9431-032X
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About
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Research Areas
  • Medicinal Plants and Neuroprotection
  • Cholinesterase and Neurodegenerative Diseases
  • Pain Mechanisms and Treatments
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Neurological Disease Mechanisms and Treatments
  • Alzheimer's disease research and treatments
  • Transcranial Magnetic Stimulation Studies
  • Neurological Disorders and Treatments
  • Neuroscience and Neuropharmacology Research
  • Muscle activation and electromyography studies
  • Redox biology and oxidative stress
  • Stroke Rehabilitation and Recovery
  • Traditional Chinese Medicine Analysis
  • Neuropeptides and Animal Physiology
  • Vestibular and auditory disorders
  • Stress Responses and Cortisol
  • Nicotinic Acetylcholine Receptors Study
  • Temporomandibular Joint Disorders
  • Fatty Acid Research and Health
  • stochastic dynamics and bifurcation
  • Tryptophan and brain disorders
  • Hearing, Cochlea, Tinnitus, Genetics
  • Osteoarthritis Treatment and Mechanisms
  • Laser Applications in Dentistry and Medicine
  • Neonatal and fetal brain pathology

Mahidol University
2012-2024

Siriraj Hospital
2017-2024

GTx (United States)
2017

University of Southern California
2009-2012

In previous studies the cerebellar interpositus (IP) nucleus, but not hippocampus, was shown to be necessary both for initial learning and retention long-term of standard delay eyeblink conditioned response (CR). However, in trace CR procedure, hippocampus is also retention, retention. Here authors evaluate role IP nucleus CR, using muscimol infusion reversibly inactivate nucleus. For short-term study, there were two subgroups, first sequentially passed through acquisition, inactivation,...

10.1037/a0014263 article EN Behavioral Neuroscience 2009-01-01

The herb Centella asiatica has long been considered a memory tonic. A recent review found no strong evidence for improvement of cognitive function, suggesting negative results were due to limitations in dose, standardization and product variation. We used standardized extract C. (ECa 233) study behavioral, cellular molecular effects on learning enhancement. ECa 233 (10, 30, 100 mg/kg) was given orally normal rats twice day 30 days. the Morris water maze test spatial performed acute brain...

10.1038/s41598-019-44867-z article EN cc-by Scientific Reports 2019-06-10

Bacopa monnieri has been used in Ayurvedic medicine as a memory enhancer for long time; however, its direct effect on synaptic plasticity not investigated. To the best of our knowledge, this study is first to report B. long-term potentiation acute hippocampal slices. Adult male Wistar rats were orally administered either sterile water or ethanolic extract 60 days. The extracellular recording was performed measure field excitatory postsynaptic potential slices these rats. Our results showed...

10.1097/wnr.0000000000000862 article EN Neuroreport 2017-09-07

Chronic cerebral ischemia hypoperfusion plays a role in the initiation and progression of vascular dementia, which causes changes metabolites. Currently, there is no standard treatment to treat, prevent reduce severity this condition. Thai herbal Yahom no.20 (YHF20) indicated for fatigue dizziness. The components YHF20 have been found pharmacological effects related pathology chronic hypoperfusion. This study aimed investigate metabolomic after administration rat model permanent bilateral...

10.1016/j.heliyon.2024.e28027 article EN cc-by-nc-nd Heliyon 2024-03-16

Climbing fiber input to the cerebellum is believed serve as a teaching signal during associative, cerebellum-dependent forms of motor learning. However, it not understood how this neural pathway coordinates changes in cerebellar circuitry Here, we use pharmacological manipulations prolong postcomplex spike pause, component climbing Purkinje neurons, and show that these enhance rate learning classical eyelid conditioning. Our findings elucidate an unappreciated aspect signal, are consistent...

10.1073/pnas.1214274109 article EN Proceedings of the National Academy of Sciences 2012-09-17

Mirror-image pain is a kind of that occurs on the contralateral side, but its pathogenesis remains unclear. Objective To develop an osteoarthritis mouse model for investigating mirror-image through observing nocifensive behaviors, histological changes, and nociceptive activity at days 3, 7, 14, 21, 28 after chemical induction unilateral temporomandibular joint (TMJ) osteoarthritis. Methodology We randomly divided 6-week-old mice into sham complete Freund adjuvant groups. induce we applied...

10.1590/1678-7757-2020-0575 article EN cc-by Journal of Applied Oral Science 2021-01-01

Fear dysregulation is one of the symptoms found in post-traumatic stress disorder (PTSD) patients. The functional abnormality hippocampus known to be implicated development such pathology. Peroxiredoxin 6 (PRDX6) belongs peroxiredoxin family. This antioxidant enzyme expressed throughout brain, including hippocampus. Recent evidence reveals that PRDX6 plays an important role redox regulation and modulation several signaling molecules involved fear regulation. Thus, we hypothesized a memory....

10.1186/s13041-021-00754-1 article EN cc-by Molecular Brain 2021-02-25

To investigate the effect of a standardized extract Centella asiatica (ECa 233), which has anti-inflammatory properties, on local expression transient receptor potential vanilloid 1 (TRPV1), acid-sensing ion channel subunit 3 (ASIC3), and calcitonin gene-related peptide (CGRP) in temporomandibular joint (TMJ) structure 21 days after injecting TMJ with complete Freund's adjuvant (CFA).A mouse model was induced by analyzing CFA-injected 7, 14, 21. We assessed histology osteoarthritis cartilage...

10.1590/1678-7757-2021-0329 article EN cc-by Journal of Applied Oral Science 2021-01-01

Anterior pituitary endocrine cells that release hormones such as growth hormone and prolactin are excitable fire action potentials. In these cells, several studies previously showed extracellular sodium (Na+) removal resulted in a negative shift of the resting membrane potential (RMP) subsequent inhibition spontaneous firing potentials, suggesting contribution Na+ background conductance. Here, we show leak channel NALCN conducts Ca2+- Gd3+-sensitive TTX-resistant conductance GH3 cell line,...

10.1096/fj.202000841rr article EN cc-by-nc-nd The FASEB Journal 2021-04-01

The conditioning context arises from the relatively static features of training environment. In rabbit eyeblink conditioning, procedures that retard acquisition (conditioned stimulus [CS] preexposure, unconditioned blocking manipulations) are attenuated by changes. this article authors investigate effect exposure after initial delay conditioning. After conditioned responses (CRs) were established, one group received 6 sessions exposure, whereas control groups either remained in their home...

10.1037/0735-7044.120.3.730 article EN Behavioral Neuroscience 2006-01-01

Objective To examine the long-term effects of low-frequency repetitive transcranial magnetic stimulation (LFrTMS) combined with task-specific training on paretic hand function following subacute stroke. Methods Sixteen participants were randomly selected and grouped into two: experimental group (real LFrTMS) control (sham LF-rTMS). All 16 then taken through a 1-hour taskspecific hand. The corticospinal excitability (motor evoke potential [MEP] amplitude) non-lesioned hemisphere, performance...

10.5535/arm.2018.42.6.777 article EN cc-by-nc Annals of Rehabilitation Medicine 2018-12-28

Background Task-oriented training with upper extremity (UE) skilled movements has been established as a method to regain function post stroke. Although improved UE shown after this type of therapy, there is minimal evidence that brain plasticity associated training. The accelerated skill acquisition program (ASAP) an example approach for promoting using targeting movements.Objective To investigate the effects single 2-hour session ASAP in individuals stroke on measures represented by...

10.1080/10749357.2021.1926136 article EN Topics in Stroke Rehabilitation 2021-07-28

Abstract Chronic inflammatory temporomandibular disorder (TMD) pain has a high prevalence, and available nonspecific treatments have adverse side effects. ECa 233, standardized Centella asiatica extract, is highly anti-inflammatory safe. We investigated its therapeutic effects by injecting complete Freund’s adjuvant (CFA) into right joint of mice administering either ibuprofen or 233 (30, 100, 300 mg/kg) for 28 days. Inflammatory nociceptive markers, bone density, hypersensitivity were...

10.1038/s41598-023-33769-w article EN cc-by Scientific Reports 2023-04-24

ECa 233 is the standardized extract of Centella asiatica (L.) Urban. (Apiaceae). It contains at least 85% triterpenoid glycosides and yields neuroprotective memory-enhancing effects. However, exact molecules exerting effects might be triterpenic acid metabolites reproduced through gut metabolism after orally ingesting C. asiatica, not glycosides.This study demonstrates effect unmetabolized on hippocampal synaptic plasticity directly perfusing over acute brain slices.The slices obtained from...

10.1080/13880209.2021.1893348 article EN cc-by Pharmaceutical Biology 2021-01-01

Abstract Perilla seed oil, derived from a regional plant native to northern Thailand, undergoes cold‐pressing analyze its bioactive components, notably alpha‐linolenic acid (ALA). ALA, constituting approximately 61% of the serves as precursor for therapeutic omega‐3 fatty acids, EPA and DHA, with neurodegenerative disease benefits anti‐inflammatory responses. This study administered different concentrations perilla oil male C57BL/6 mice, categorized low dose (LP 5% w/w), middle (MP 10% high...

10.1002/fsn3.4265 article EN cc-by Food Science & Nutrition 2024-06-14

Background and Aim: Alzheimer’s disease (AD) poses a significant health-care challenge, often linked to cognitive decline caused by oxidative stress. This study investigated the potential neuroprotective effects of Paederia foetida leaf extract (PFE) in rats that exhibited scopolamine-induced dementia mimicking AD. Materials Methods: Forty-two male were treated with either donepezil (0.5 mg/kg) or PFE at doses 250, 500, 1000 mg/kg for 14 days before after beginning Alzheimer’s-like symptoms...

10.14202/vetworld.2024.1972-1982 article EN cc-by Veterinary World 2024-09-01

ECa 233 is a standardized extract of Centella asiatica (CA), an herb widely used in traditional Chinese and Ayurvedic medicine. Previous studies reported that enhanced memory retention synaptic plasticity the hippocampus healthy rats. Because this, we became curious whether has therapeutic effect on fear deficit triple transgenic Alzheimer's disease (3xTg-AD) model mice. Fear crucial emotional for survival found to be impaired patients with early-onset (AD). In this study, orally...

10.1142/s0192415x23500179 article EN The American Journal of Chinese Medicine 2023-01-01

Alzheimer's disease is characterized by the deposition of insoluble amyloid-β peptides produced from β-amyloid precursor protein (βAPP). Because α-secretase cleavage ADAM10 and ADAM17 takes place in middle Aβ, its activation considered as a promising anti-AD therapeutic track. Here we establish that polyherbal Wattana formula (WNF) stimulates sAPPα production cells neuronal non-neuronal origins through an increase both catalytic activities with no modification BACE1 activity expression. This...

10.1371/journal.pone.0170360 article EN cc-by PLoS ONE 2017-01-20

Permanent bilateral common carotid artery occlusion (2VO) in rodents induces chronic cerebral hypoperfusion, mimicking vascular dementia elderly people.It causes inflammation and oxidative stress, leading to neuronal loss the hippocampus, white matter injuries impairments of spatial learning memory.Thai Herbal Sahatsatara formula (STF) has anti-inflammatory antioxidant actions which might protect neurons matter.This experiment was investigate possible protective effects STF.Twenty-eight...

10.2306/scienceasia1513-1874.2020.084 article EN ScienceAsia 2020-01-01
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