Maternal separation influences hepatic drug-metabolizing CYP450 gene expression without pathological changes in adult mice

OBJECTIVES

The principal motive of this study is to explore the influence maternal separation (MS) exhibits on the mRNA expression of major drug metabolizing-cyp450s in parallel with the assessment of pathological changes that can be induced by MS in the livers of experimental mice.

METHODS

Eighteen Balb/c mouse pups, comprising of both males and females, were separated from their mothers after birth. Following a six-week period during when the pups became adults, the mice were sacrificed and their livers were isolated for analysis of weight, pathohistological alterations, and the mRNA expression of drug metabolizing cyp450 genes: cyp1a1, cyp3a11, cyp2d9, and cyp2c29.

RESULTS

The study demonstrated that MS markedly downregulated (p<0.05) the mRNA expression of all tested drug-metabolizing cyp450s in livers of female and male mice. Furthermore, the mRNA levels of major drug-metabolizing cyp450s were notably lower (p<0.05) in livers of female MS mice as compared with male MS mice. It was found that values of the total body weight and liver weight of MS mice did not vary significantly (p>0.05) from those of the control groups. Additionally, histological examination revealed that the hepatic tissue of MS mice was normal, similar to that of the control mice.

CONCLUSIONS

In summary, MS downregulates the gene expression of major hepatic drug-metabolizing cyp450s without inducing pathological alterations in the livers of mice. These findings provide an explanation for the heterogeneity in pharmacokinetics and drug response of patients with early life stress.

Knowledge and Perception Toward Neuromodulation Devices Among Medical Students at Umm Al-Qura University

Introduction Neurologic and psychiatric disorders affect many people worldwide and are crucial to medical care. It is crucial to note that primary care doctors initially evaluate patients who will eventually require neuromodulation (NM) therapy. There is a growing concern about the extent of medical students' knowledge regarding NM therapy. Insufficient education and limited exposure of future doctors to different treatment approaches can limit their ability to refer patients promptly and appropriately, thereby impeding access to necessary treatment. Methods The study employed a non-probability stratified snowball sampling technique to recruit participants. The population consisted of undergraduate medical students (excluding interns) at Umm Al-Qura University (UQU) in Saudi Arabia. Data collection was conducted through an online questionnaire. Results The sample comprised 301 medical students, with an average age of 21.62±1.54 years (ranging from 18 to 25). The majority were female (65.1%), and in the clinical years (57.8%), a considerable portion of respondents (57.5%) lacked awareness that NM devices are approved by the FDA for treatment. Both pre-clinical and clinical-year students exhibited insufficient knowledge (91.3% and 91.4%, respectively). Females showed a higher proportion (95.9%) of poor attitudes toward NM compared to males (83.8%). Notably, preclinical students showed a higher level of knowledge (11.0%) compared to clinical students (6.3%). Conclusions The study revealed a significant lack of knowledge among medical students regarding NM devices. This is concerning given the growing prevalence of NM devices in clinical practice. To ensure optimal patient care, it is crucial to provide comprehensive education on NM devices to medical students.