Biology, Medicine, & Natural Product Chemistry
Vol 15, No 1 (2026)

Biological Determinants of Memory Performance In Qur’an Memorizers: Evidence from Cathecol-O-Methyl-Transferase (COMT) Gene Expression And Protein Levels

Rosdianah Rahim (Universitas Islam Negeri Alauddin)
Suryani As’ad (Hasanuddin University)
Veni Hadju (Hasanuddin University)
Saidah Syamsuddin (Hasanuddin University)
Muhammad Hatta (Hasanuddin University)
Nadyah Haruna (Universitas Islam Negeri Alauddin)
Syatirah Jalaluddin (Universitas Islam Negeri Alauddin)
Yessy Kurniati (Universitas Islam Negeri Alauddin)



Article Info

Publish Date
11 Jul 2026

Abstract

Memory performance during adolescence is a key aspect of cognitive development and is strongly influenced by dopaminergic regulation in the prefrontal cortex. Catechol-O-Methyltransferase (COMT) plays a critical role in modulating dopamine availability and cognitive function. This study examined the relationships between age, COMT gene expression, COMT protein levels, and memory performance among adolescents engaged in structured memorization activities. A quantitative cross-sectional design was applied involving male adolescent participants. Memory performance was assessed using a standardized psychometric test, while COMT gene expression and protein levels were measured using reverse transcription quantitative polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. Statistical analyses included descriptive statistics and correlation tests. The results demonstrated a significant negative association between age and memory performance within the adolescent range. In contrast, COMT gene expression and protein levels showed strong positive correlations with memory performance, indicating that higher molecular regulation of dopamine was associated with superior cognitive outcomes. Memorization duration and quantity were not significantly related to memory performance. These findings support dopamine-based models of cognitive regulation and highlight the importance of molecular biomarkers in understanding adolescent memory development. The study contributes to developmental cognitive research by emphasizing biologically informed approaches and provides a foundation for future longitudinal investigations.

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Journal Info

Abbrev

BIOMEDICH

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Medicine & Pharmacology Public Health

Description

BIOLOGY, MEDICINE, & NATURAL PRODUCT CHEMISTRY, this journal is published to attract and disseminate innovative and expert findings in the fields of plant, animal, and microorganism secondary metabolite, and also the effect of natural product on biological system as a reference source for ...