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The Brain-Derived Neurotrophic Factor (BDNF) gene Val66Met (rs6265) polymorphism and stress among preclinical medical students in Malaysia

Al-Hatamleh MAI, Hussin TMAR, Taib WRW, Ismail I

J Taibah Univ Med Sci, 2019 Oct;14(5):431-438.
PMID: 31728141 DOI: 10.1016/j.jtumed.2019.09.003

Objective: This study aimed to determine the allelic and genotypic association of the Val66Met (rs6265) polymorphism in the BDNF gene with stress levels in preclinical medical students of Universiti Sultan Zainal Abidin (UniSZA), Terengganu, Malaysia.
Methods: In this cross-sectional study, we recruited all 122 preclinical medical students. The validated depression anxiety stress scales-21 (DASS-21) questionnaire was distributed and blood samples were collected from each subject for DNA extraction. Genotyping analysis of the BDNF gene (Val66Met) polymorphism was performed via an optimised polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method.
Results: A total of 105 subjects agreed to participate in this study. Indian students were found to more likely have the Val/Val genotype, whereas Malay students were more likely to have the Met/Met genotype (p = 0.027). Individuals carrying any one of the three BDNF genotypes (Val/Val, Val/Met and Met/Met) differed significantly from each other in terms of their perception of stress (p = 0.010); students carrying the Val/Val genotype (M = 10.6) perceived significantly lower stress than students carrying the Val/Met (M = 14) and Met/Met (M = 15.1) genotypes.
Conclusion: In our study, the Met-allele was associated with higher stress levels. To the best of our knowledge, this is the first study investigating this stress-related gene in medical students. The findings from this study should trigger more investigators to focus on the impact of stress on genetically predisposed medical students.

Matched MeSH terms: Eugenol
Fulltext Impacts of three different relaxation techniques on mood states among athletes

Hazliza Razali, Rohayah Husain, Marhasiyah Rahim, Nor Najibah Endut, Khairi Che Mat, Nordin Simbak, et al.

Malaysian Journal of Public Health Medicine, 2017;17(2):49-58.

Relaxation technique is a method, process, procedure or activity that helps a person to relax. There are several methods of relaxation techniques that can be used proven beneficial to improve the individual state of relaxation. Relaxation can be performed individually or in a group. With suitable technique of relaxation, it will improve quality of life as well as emotional and physical. This study aims to investigate the impact of three different relaxation techniques, namely Autogenic (AGR), Progressive Muscle (PMR) and Music Relaxation (MR) on mood states among Universiti Sultan Zainal Abidin (UniSZA) athletes. Eighty UniSZA athletes aged between 18 to 25 years old were randomly assigned into four groups which were AGR, PMR, MR and control group. Each groups consisted of 20 subjects which were male and female athletes with multidiscipline of the sports involvement. The mood states were determined by Brunel Mood Scale (BRUMS) during pre and post-intervention. The subjects in the three intervention groups received relaxation training twice a week for four weeks, 30 minutes per sessions. While, a control group not received any relaxation training during the intervention time. Repeated measure ANOVA conducted showed that the two parameters in BRUMS significantly changes in post-intervention such vigour (F=16.083, p<0.0001) and confusion (F=3.412, p=0.022). Other negative mood scores showed no significant changes such; (anger; F=2.235, p=0.091, depression; F=0.960, p=0.416, fatigue; F=0.724, p=0.540, tension; F=16.083, p=0.913).The results of Pairwise Comparison revealed that the three types of relaxation techniques (AGR, PMR and MR) effective to enhance vigour (positive mood) score among the adult subjects. In this study, PMR was the most effective relaxation technique followed by AGR and MR to regulate the mood state among adults.

Matched MeSH terms: Eugenol
Fulltext The association between the use of complementary and alternative medicine (CAM) with health-related quality of life (HRQoL) and anthropometric indices among university’s staff

Halib H, Hamdan NA, Hussin N, Shafie N

Malaysian Journal of Public Health Medicine, 2017;17 Special(2):74-81.

Complementary Alternative Medicine (CAM) is broadly used as an adjunct treatment for patients to treat various kinds of disease, prevent disease and to sustain and enhance quality of life of the users. The study is aimed to investigate the association between CAM uses, Health-Related Quality of Life (HRQoL) and anthropometric indices among workers or staffs in Universiti Sultan Zainal Abidin (UniSZA) Gong Badak Campus, Kuala Terengganu. A total of 300 subjects participated in this study and completed the malay version of modified HRQol (SF-12) questionnaires. Anthropometric measurements among the subjects were done. Independent t-test, One-way ANOVA and Pearson correlation were used to test the association and the hypotheses. The prevalence of CAM users was 37.3%. The results showed that bodily pain score domain was significantly higher among non-CAM users. Overall, male had higher Mental Health Composite Score (MCS) score than female. Physical Health Composite Score (PCS) was only correlated negatively with BMI among non-CAM users but negative correlated with body fat percentage in both CAM and non-CAM users. As conclusion, HRQoL had significant negative correlation with body fat percentage among CAM users. No association was found between CAM use and HRQoL scores.

Matched MeSH terms: Eugenol
Sealing ability of various restorative materials as coronal barriers between endodontic appointments

Tapsir Z, Aly Ahmed HM, Luddin N, Husein A

J Contemp Dent Pract, 2013 Jan 1;14(1):47-50.
PMID: 23579892

To evaluate and compare the microleakage of various restorative materials used as coronal barriers between endodontic appointments.

Matched MeSH terms: Eugenol/chemistry
Fulltext Hydroxychavicol, a polyphenol from Piper betle leaf extract, induces cell cycle arrest and apoptosis in TP53-resistant HT-29 colon cancer cells

Rajedadram A, Pin KY, Ling SK, Yan SW, Looi ML

J Zhejiang Univ Sci B, 2021 Feb 15;22(2):112-122.
PMID: 33615752 DOI: 10.1631/jzus.B2000446

This study aims to elucidate the antiproliferative mechanism of hydroxychavicol (HC). Its effects on cell cycle, apoptosis, and the expression of c-Jun N-terminal kinase (JNK) and P38 mitogen-activated protein kinase (MAPK) in HT-29 colon cancer cells were investigated. HC was isolated from Piper betle leaf (PBL) and verified by high-performance liquid chromatography (HPLC), nuclear magnetic resonance (NMR), and gas chromatography-mass spectrometry (GC-MS). The cytotoxic effects of the standard drug 5-fluorouracil (5-FU), PBL water extract, and HC on HT-29 cells were measured after 24, 48, and 72 h of treatment. Cell cycle and apoptosis modulation by 5-FU and HC treatments were investigated up to 30 h. Changes in phosphorylated JNK (pJNK) and P38 (pP38) MAPK expression were observed up to 18 h. The half maximal inhibitory concentration (IC50) values of HC (30 μg/mL) and PBL water extract (380 μg/mL) were achieved at 24 h, whereas the IC50 of 5-FU (50 μmol/L) was obtained at 72 h. Cell cycle arrest at the G0/G1 phase in HC-treated cells was observed from 12 h onwards. Higher apoptotic cell death in HC-treated cells compared to 5-FU-treated cells (P<0.05) was observed. High expression of pJNK and pP38 MAPK was observed at 12 h in HC-treated cells, but not in 5-FU-treated HT-29 cells (P<0.05). It is concluded that HC induces cell cycle arrest and apoptosis of HT-29 cells, with these actions possibly mediated by JNK and P38 MAPK.

Matched MeSH terms: Eugenol
Intracanal bisphosphonate does not inhibit replacement resorption associated with delayed replantation of monkey incisors

Thong YL, Messer HH, Zain RB, Saw LH, Yoong LT

Dent Traumatol, 2009 Aug;25(4):386-93.
PMID: 19459923 DOI: 10.1111/j.1600-9657.2008.00631.x

Progressive replacement resorption following delayed replantation of avulsed teeth has proved to be an intractable clinical problem. A wide variety of therapeutic approaches have failed to result in the predictable arrest of resorption, with a good long-term prognosis for tooth survival. Bisphosphonates are used in the medical management of a range of bone disorders and topically applied bisphosphonate has been reported to inhibit root resorption in dogs. This study evaluated the effectiveness of a bisphosphonate (etidronate disodium) as an intracanal medicament in the root canals of avulsed monkey teeth, placed before replantation after 1 h of extraoral dry storage. Incisors of six Macaca fascicularis monkeys were extracted and stored dry for 1 h. Teeth were then replanted after canal contamination with dental plaque (negative control) or after root canal debridement and placement of etidronate sealed in the canal space. A positive control of calcium hydroxide placed 8-9 days after replantation was also included. All monkeys were sacrificed 8 weeks later and block sections were prepared for histomorphometric assessment of root resorption and periodontal ligament status. Untreated teeth showed the greatest extent of root resorption (46% of the root surface), which was predominantly inflammatory in nature. Calcium hydroxide treated teeth showed the lowest overall level of resorption (<30% of the root surface), while the bisphosphonate-treated group was intermediate (39%). Ankylosis, defined as the extent of the root surface demonstrating direct bony union to both intact and resorbed root surface, was the lowest in the untreated control group (15% of the root surface), intermediate in the calcium hydroxide group (27%) and the highest in the bisphosphonate group (41%). Bony attachment to the tooth root was divided approximately equally between attachment to intact cementum and to previously resorbed dentin. Overall, bisphosphonate resulted in a worse outcome than calcium hydroxide in terms of both root resorption and ankylosis.

Matched MeSH terms: Zinc Oxide-Eugenol Cement/therapeutic use