The prevalence of smartphone addiction among university students has raised concerns about its potential implications on their mental health, academic performance, and interpersonal relationships. This review aims to address the existing gap in the literature and shed light on the psychosocial impact of smartphone addiction in this crucial phase of young adults’ lives. A systematic approach was employed to identify and analyse relevant studies from reputable databases. The selection criteria encompassed studies published between January 2009 and December 2022, in university students. The review synthesises findings from 32 selected studies to present a comprehensive analysis of the psychosocial impacts of smartphone addiction. The results indicated significant associations between excessive smartphone use and adverse mental health outcomes, including increased levels of anxiety, depression, and stress among university students. Furthermore, smartphone addiction negatively influences academic performance, decreasing face-to-face communication and social isolation.

Alpha (α)-thalassaemia is a common genetic disorder worldwide caused by the deletion and rarely non-deletional mutations of the α-globin gene. Nearly 70 types of non-deletional mutations have been reported worldwide, and this review focuses on the common ones affecting α-thalassaemia patients. The common mutations are initiation codon mutation, codon 30, haemoglobin (Hb) Constant Spring, Hb Quang Sze, Hb Adana and Hb Evora. The haematological parameters of non-deletional mutations usually show mild changes. However, a severe reduction in haemoglobin level, mean corpuscular haemoglobin (MCH), mean corpuscular volume (MCV), and mean corpuscular haemoglobin count (MCHC) has been observed among compound heterozygous HbH disease, involving both deletional and non-deletional mutations. Although non-deletional mutations are rarely reported, it requires the study of more cases to understand the clinical phenotypes that lead to severe clinical manifestations.

Medicinal plants have been used in Malaysia for a long time ago. These plants have been marketed as herbal product and used in the traditional healthcare system because of its positive therapeutic effects. This paper discusses particularly several types of Malaysian herbs that are traditionally used for contraception and scientific studies related to its pharmaceutical properties showing its use among the public for its anti-fertility effects. Even though several methods of contraception have been promoted for family planning, yet, the perception of the public on the usage of synthetic steroidal contraceptives due to its serious adverse effects has made them focus on indigenous plants. Contraceptives drug-containing oestrogen and progesterone have proven to be effective and popular, However, the side effects of these drugs have sparked the idea of scientists to develop newer molecules from medicinal plants. Therefore, it is necessary to investigate in-depth qualitative research on conceptions and concerns about traditional contraceptive methods using herbal ingredients among Malaysians.

Introduction: Acne vulgaris is a common skin disease that affects people all over the world. One of the main pathogenesis of acne is Propionibacterium acnes (P. acnes) proliferation. Propolis has long been used in folk medicine as a natural remedy. Its antimicrobial properties have all been studied extensively. However, there have been few studies on its use in acne. Thus, the goal of this study was to assess the antimicrobial potential of ethanolic (EEP) and water extracts (WEP) of Malaysian Apis mellifera propolis against P. acnes. Methods: Propolis samples were collected from Acacia mangium apiary from northern and southern regions of Peninsular Malaysia. The propolis extracts were screened for antimicrobial activity against P. acnes using an agar well diffusion assay. The minimum inhibitory concentrations (MICs) of the extracts were determined using a resazurin broth microdilution assay. Results: The antimicrobial screening demonstrated all extracts had antimicrobial activity against P. acnes. The inhibition zones at concentration 20 mg/ml were in the range of 16 mm to 24 mm which was greater than positive control (10% benzoyl peroxide) (15 mm). The EEP from northern region showed the lowest MIC values (0.32 µg/ml), followed by EEP from southern region (0.63 µg/ml), WEP from southern region (625 µg/ml) and WEP from northern region (2500 µg/ml). Conclusion: The Malaysian EEP demonstrated promising antimicrobial properties against P. acnes. Further study is needed to determine the active constituents and their possible inhibitory mechanisms against P. acnes.

OBJECTIVES: This study aimed to evaluate the chemical and biological properties of fast-set white mineral trioxide aggregate (FS WMTA), which was WMTA combined with calcium chloride dihydrate (CaCl₂·2H₂O), compared to that of WMTA. MATERIALS AND METHODS: Surface morphology, elemental, and phase analysis were examined using scanning electron microscope (SEM), energy dispersive X-ray microanalysis (EDX), and X-ray diffraction (XRD), respectively. The cytotoxicity and cell attachment properties were evaluated on human periodontal ligament fibroblasts (HPLFs) using methyl-thiazol-diphenyltetrazolium (MTT) assay and under SEM after 24 and 72 hours, respectively. RESULTS: Results showed that the addition of CaCl₂·2H₂O to WMTA affected the surface morphology and chemical composition. Although FS WMTA exhibited a non-cytotoxic profile, the cell viability values of this combination were lesser than WMTA, and the difference was significant in 7 out of 10 concentrations at the 2 time intervals (p < 0.05). HPLFs adhered over the surface of WMTA and at the interface, after 24 hours of incubation. After 72 hours, there were increased numbers of HPLFs with prominent cytoplasmic processes. Similar findings were observed with FS WMTA, but the cells were not as confluent as with WMTA. CONCLUSIONS: The addition of CaCl₂·2H₂O to WMTA affected its chemical properties. The favorable biological profile of FS WMTA towards HPLFs may have a potential impact on its clinical application for repair of perforation defects.
Calcium Chloride* ; Calcium* ; Cell Survival ; Cytoplasm ; Electron Probe Microanalysis ; Fibroblasts ; Humans ; Miners* ; Periodontal Ligament ; X-Ray Diffraction

Advancement in cell culture protocols, multidisciplinary research approach, and the need of clinical implication to reconstruct damaged or diseased tissues has led to the establishment of three-dimensional (3D) test systems for regeneration and repair. Regenerative therapies, including dental tissue engineering, have been pursued as a new prospect to repair and rebuild the diseased/lost oral tissues. Interactions between the different cell types, growth factors, and extracellular matrix components involved in angiogenesis are vital in the mechanisms of new vessel formation for tissue regeneration. In vitro pre-vascularization is one of the leading scopes in the tissue-engineering field. Vascularization strategies that are associated with co-culture systems have proved that there is communication between different cell types with mutual beneficial effects in vascularization and tissue regeneration in two-dimensional or 3D cultures. Endothelial cells with different cell populations, including osteoblasts, smooth muscle cells, and fibroblasts in a co-culture have shown their ability to advocate pre-vascularization. In this review, a co-culture perspective of human gingival fibroblasts and vascular endothelial cells is discussed with the main focus on vascularization and future perspective of this model in regeneration and repair.
Cell Culture Techniques ; Coculture Techniques* ; Endothelial Cells* ; Extracellular Matrix ; Fibroblasts* ; Humans* ; In Vitro Techniques ; Intercellular Signaling Peptides and Proteins ; Myocytes, Smooth Muscle ; Osteoblasts ; Regeneration ; Tissue Engineering

Perivitelline fluid, extracted from the fertilized eggs of horseshoe crabs, has been reported to play a vital role in supporting embryogenesis as well as cell proliferation. The present study aims to evaluate the effect of PVF on the expression of COL1A1 in human dental pulp stem cells (DPSCs). The cells were grouped into two; untreated (control) and treated with a single dose of PVF (0.019 mg/ml). Gene expression was quantified for COL1A1 on day 1, 3 and 7 using reverse transcriptase PCR. The expression of COL1A1 on day 3 of treated group with PVF was the highest though there was a decline of COL1A1 expression on day 7. Mann Whitney test was utilized to determine the significance of COL1A1 expression between treated and untreated groups. Significant difference in the expression of COL1A1 was observed between the treated and untreated groups on day 3 though there was no significance in the expression on day 7. The present study indicates that PVF may have the potential to increase cell proliferation in human DPSCs.
Dental Pulp ; Horseshoe Crabs ; Stem Cells

Combination between tissue engineering and other fields has brought an innovation in the area of regenerative medicine which ultimate aims are to repair, improve, and produce a good tissue construct. The availability of many types of scaffold, both synthetically and naturally have developed into many outstanding end products that have achieved the general objective in tissue engineering. Interestingly, most of this scaffold emulates extracellular matrix (ECM) characteristics. Therefore, ECM component sparks an interest to be explored and manipulated. The ECM featured in human amniotic membrane (HAM) provides a suitable niche for the cells to adhere, grow, proliferate, migrate and differentiate, and could possibly contribute to the production of angiogenic micro-environment indirectly. Previously, HAM scaffold has been widely used to accelerate wound healing, treat bone related and ocular diseases, and involved in cardiovascular repair. Also, it has been used in the angiogenicity study, but with a different technical approach. In addition, both side of HAM could be used in cellularised and decellularised conditions depending on the objectives of a particular research. Therefore, it is of paramount importance to investigate the behavior of ECM components especially on the stromal side of HAM and further explore the angiogenic potential exhibited by this scaffold.
Amnion* ; Extracellular Matrix* ; Humans* ; Regenerative Medicine ; Tissue Engineering ; Wound Healing

The aim of this study was to determine the efficiency of different human amniotic membrane (HAM) processing methods on the concentration, purity and integrity of RNA. Two different techniques (Technique 1 and Technique 2) were employed for the processing of HAM, which differed in terms of washing solution, sample storage conditions and processing time. Based on preservation of HAM, three groups were formed under each technique. In Technique 1, the groups were fresh frozen 1 (F1), glycerol preserved (GP) and gamma irradiated glycerol preserved (IGP); where else in Technique 2, the groups were fresh frozen 2 (F2), 50% glycerol/Dulbecco’s modified Eagle medium (DMEM) cryopreserved HAM diluted with phosphate buffered saline (GB) and 50% glycerol/DMEM cryopreserved HAM diluted with diethylprocarbonate water (GD). Total RNA was extracted from the samples and their concentration, purity and integrity were examined. The F2 sample of which there was no pre-washing step and involved direct sample storage at -80ºC, shorter processing time and chilled processing conditions had yielded better quality of RNA compared to the others.

Keloid disease is a fibroproliferative dermal tumor with an unknown etiology that occurs after a skin injury in genetically susceptible individuals. Increased familial aggregation, a higher prevalence in certain races, parallelism in identical twins, and alteration in gene expression all favor a remarkable genetic contribution to keloid pathology. It seems that the environment triggers the disease in genetically susceptible individuals. Several genes have been implicated in the etiology of keloid disease, but no single gene mutation has thus far been found to be responsible. Therefore, a combination of methods such as association, gene-gene interaction, epigenetics, linkage, gene expression, and protein analysis should be applied to determine keloid etiology.
Continental Population Groups ; Environmental Exposure ; Epigenomics ; Gene Expression ; Humans ; Keloid ; Prevalence ; Skin ; Skin Diseases ; Twins, Monozygotic