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Forensic DNA Phenotyping for Predicting Externally Visible Characteristics in Indonesian Populations: A Novel Tool for Criminal Investigations Rinna Azrida; Febria Suryani; Bjorka Alma; Sony Sanjaya; Khairiel Anwar
Sriwijaya Journal of Forensic and Medicolegal Vol. 2 No. 2 (2024): Sriwijaya Journal of Forensic and Medicolegal
Publisher : Phlox Institute: Indonesian Medical Research Organization

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59345/sjfm.v2i2.190

Abstract

Introduction: Forensic DNA phenotyping (FDP) is an emerging field that utilizes genetic information to predict an individual's externally visible characteristics (EVCs). While its application has shown promise in aiding criminal investigations globally, its utility within the diverse Indonesian population remains largely unexplored. This study aimed to investigate the potential of FDP for predicting EVCs in a representative sample of the Indonesian population, evaluating its accuracy and implications as a novel tool for criminal investigations in this unique context. Methods: This study involved the analysis of anonymized DNA samples from 1000 individuals self-identified as belonging to various ethnic groups across Indonesia. A panel of single nucleotide polymorphisms (SNPs) known to be associated with EVCs including hair color, eye color, skin pigmentation, and biogeographic ancestry (BGA) was selected based on existing literature. Genotyping data was generated to reflect the genetic diversity observed in Indonesian populations. Statistical analyses were performed to assess the predictive power of the SNP panel for each EVC and to evaluate the correlation between predicted phenotypes and self-reported characteristics. Results: The results demonstrated a moderate to high predictive accuracy for several EVCs within the Indonesian population. Skin pigmentation showed the highest predictability, followed by eye color and hair color. BGA prediction effectively clustered individuals based on their genetic profiles, aligning with the known population structure of Indonesia. Significant variations in allele frequencies for EVC-associated SNPs were observed across different ethnic groups, highlighting the importance of population-specific data. Conclusion: This study provides preliminary evidence suggesting that forensic DNA phenotyping holds significant potential as a novel tool for criminal investigations in Indonesia. The ability to predict EVCs from DNA could provide valuable leads in cases where traditional DNA profiling yields no matches. However, further research with real Indonesian population data is crucial to validate these findings and to develop robust, population-specific FDP models. Ethical and legal considerations surrounding the use of this technology in the Indonesian context must also be carefully addressed.
The Impact of Tuina Massage Therapy on Sensory Processing, Sleep Disturbances, and Maladaptive Behaviors in Young Children with Autism Spectrum Disorder in Jakarta, Indonesia: A Controlled Clinical Study Fatimah Mursyid; Lin Chia; Khairiel Anwar; Istiqomah Putri; Bjorka Alma
Scientia Psychiatrica Vol. 6 No. 4 (2025): Scientia Psychiatrica
Publisher : HM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37275/scipsy.v6i2.191

Abstract

Introduction: Autism spectrum disorder (ASD) is a complex neurodevelopmental condition characterized by challenges in social communication, restricted interests, and repetitive behaviors, often accompanied by sensory processing abnormalities, sleep disturbances, and maladaptive behaviors. Current interventions offer variable efficacy, prompting exploration of complementary therapies. Tuina, a form of therapeutic massage in Traditional Chinese Medicine (TCM), has shown potential in pediatric neurodevelopmental issues. This study aimed to investigate the impact of Tuina massage therapy on sensory processing, sleep quality, and maladaptive behaviors in young children with ASD in Jakarta, Indonesia. Methods: A controlled clinical study was conducted with 88 children aged 3-7 years, diagnosed with ASD according to DSM-5 criteria and confirmed using the Autism Diagnostic Observation Schedule, Second Edition (ADOS-2). Participants were recruited from specialized pediatric clinics in Jakarta and assigned to either an intervention group (n=44) receiving a standardized Tuina protocol thrice weekly for 12 weeks alongside standard care, or a control group (n=44) receiving standard care only. Standard care included established interventions such as behavioral therapy, speech therapy, occupational therapy, or special education programs. Outcome measures included the Sensory Profile 2 (SP-2), the Children's Sleep Habits Questionnaire (CSHQ), and the Aberrant Behavior Checklist-Community (ABC-C), administered at baseline, week 6, week 12 (post-intervention), and at a 3-month follow-up (week 24). Results: At 12 weeks, the Tuina group demonstrated statistically significant improvements compared to the control group in sensory processing, specifically in auditory filtering (mean difference [MD] -8.5, 95% CI -11.2 to -5.8, p<0.001) and tactile sensitivity (MD -7.9, 95% CI -10.5 to -5.3, p<0.001) on SP-2 quadrant scores. Total CSHQ scores indicated significantly better sleep in the Tuina group (MD -6.8, 95% CI -9.1 to -4.5, p<0.001), particularly in subscales of bedtime resistance and sleep anxiety. ABC-C scores for irritability (MD -5.2, 95% CI -7.0 to -3.4, p<0.001) and hyperactivity (MD -6.1, 95% CI -8.3 to -3.9, p<0.001) were also significantly lower in the Tuina group. These improvements were largely maintained at the 3-month follow-up. No serious adverse events were reported. Conclusion: This study provides evidence that Tuina massage therapy, as an adjunct to standard care, can significantly improve sensory processing, reduce sleep disturbances, and mitigate maladaptive behaviors in young children with ASD in an Indonesian context. These findings suggest Tuina may be a valuable complementary intervention for managing core and associated symptoms of ASD. Further research with larger, diverse samples and longer follow-up periods is warranted.
CRISPRi-Mediated Repression of gtfB Attenuates Streptococcus mutans Virulence and Promotes Ecological Homeostasis in a Preclinical Cariogenic Biofilm Model Khairiel Anwar; Maria Rodriguez; Sony Sanjaya; Danniel Hilman Maulana; Karina Chandra; Isadora Selestine
Crown: Journal of Dentistry and Health Research Vol. 3 No. 1 (2025): Crown: Journal of Dentistry and Health Research
Publisher : Phlox Institute: Indonesian Medical Research Organization

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59345/crown.v3i1.234

Abstract

Introduction: Streptococcus mutans is a primary etiological agent of dental caries, largely due to its capacity to form robust, acidogenic biofilms. This virulence is critically dependent on glucosyltransferases, particularly GtfB, which synthesizes the adhesive extracellular glucan matrix. Conventional antimicrobial strategies often lack specificity, leading to oral dysbiosis. This study aimed to develop and evaluate a highly targeted CRISPR interference (CRISPRi) system to silence the gtfB gene in S. mutans, thereby inhibiting its cariogenic potential without adversely affecting the viability of key oral commensal species. Methods: A CRISPRi system, comprising a nuclease-deactivated Cas9 (dCas9) and a single guide RNA (sgRNA) targeting the gtfB promoter, was engineered into S. mutans UA159. The efficacy of gtfB silencing was quantified via qRT-PCR. The consequential effects on bacterial growth kinetics, insoluble glucan synthesis, and single-species biofilm formation were assessed using spectrophotometry, anthrone assays, crystal violet staining, and confocal laser scanning microscopy (CLSM). The ecological impact was investigated in a multi-species biofilm model containing S. mutans and the commensal bacteria Streptococcus gordonii, Streptococcus oralis, and Actinomyces naeslundii, with microbial composition analyzed by species-specific qPCR. All research activities were conducted in Indonesia. Results: The CRISPRi system induced a profound and specific downregulation of gtfB mRNA expression by over 98% (p<0.001) in the engineered S. mutans strain compared to the wild-type. This silencing did not impair bacterial planktonic growth. However, it led to a significant reduction in insoluble glucan production by 85% (p<0.001) and a corresponding 79% decrease in total biofilm biomass (p<0.001). CLSM imaging confirmed the formation of structurally deficient biofilms with minimal extracellular matrix. In the multi-species model, repression of S. mutans virulence significantly altered the biofilm ecology, resulting in a 65% reduction in the proportional abundance of S. mutans and a concomitant increase in the representation of commensal species, thereby fostering a community structure more aligned with oral health. Conclusion: Targeted repression of the gtfB gene using a CRISPRi-based approach effectively 'disarms' S. mutans, neutralizing its primary cariogenic mechanism without being bactericidal. This strategy not only attenuates its virulence but also shifts the ecological balance in favor of beneficial commensal bacteria. These findings underscore the therapeutic potential of gene-targeted virulence modulation as a precise, ecologically-sound strategy for the prevention and treatment of dental caries.