OBJECTIVE: Diurnal preference is an attribute reflecting whether people are alert and preferring to be active either early or late in the day. It also referred to as chronotype or morningness-eveningness trait. The PER3 genes have been known to influence diurnal preference. In this study, we have investigated the associations between the PER3 gene polymorphisms and diurnal preference in a healthy young population, controlling for the social and environmental confounding factors. METHODS: The participants in this experiment included 299 unrelated medical college students (M=191, F=108), with a mean age of 22.9 years. Diurnal preference was measured by a single administration of the 13-item Composite Scale for Morningness (CSM). Genotyping of the PER3 VNTR (rs57875989) was performed using polymerase chain reaction. A two-tailed alpha of 0.05 was chosen. RESULTS: The mean+/-SD score on the CSM scale for all subjects was 31.90+/-6.39. There was no significant difference in total CSM score between gender groups, although females showed a trend towards higher morningness score. Although PER3 5R/5R showed the tendency towards high CSM scores, there were no significant differences on CSM scores among genotypes and allele status of PER3 VNTR (rs57875989). CONCLUSIONS: We could not confirm that the PER3 VNTR is associated with diurnal preference in a Korean healthy young population. The future studies need to investigate the association between diurnal preference and other polymorphisms of PER3 gene in larger sample of Korean young healthy population.
Alleles ; Female ; Genotype ; Humans ; Polymerase Chain Reaction

Neurodevelopmental disorders, which emerge early in development, include a range of neurological phenotypes and exhibit marked differences in prevalence between sexes. A male predominance is particularly pronounced in autism spectrum disorder (ASD). Although the precise cause of ASD is still unknown, certain genetic variations and environmental influences have been implicated as risk factors.Preclinical ASD models have been instrumental in shedding light on the mechanisms behind the sexual dimorphism observed in this disorder. In this review, we explore the potential processes contributing to sex bias by examining both intrinsic differences in neuronal mechanisms and the influence of external factors. We organize these mechanisms into six categories: 1) sexually dimorphic phenotypes in mice with mutations in ASD-associated genes related to synaptic dysfunction; 2) sex-specific microglial activity, which may disrupt neural circuit development by excessively pruning synapses during critical periods; 3) sex steroid hormones, such as testosterone and allopregnanolone, that differentially influence brain structure and function; 4) escape from X chromosome inactivation of the O-linked-Nacetylglucosamine transferase gene in the placenta; 5) sexually dimorphic activation of the integrated stress response pathway following maternal immune activation; and 6) immunological responses that are differentially regulated by sex. Understanding these mechanisms is essential for deciphering the underlying causes of ASD and may offer insights into other disorders with notable sex disparities.

The expression of nitric oxide synthase (NOS) isoforms in the ovaries of pigs was examined to study the involvement of nitric oxide, a product of NOS activity, in the function of the ovary. Western blot analysis detected three types of NOS in the ovary, including constitutive neuronal NOS (nNOS), endothelial NOS (eNOS) and inducible NOS (iNOS); eNOS immunoreactivity was more intense compared with that of iNOS or nNOS. Immunohistochemical studies demonstrated the presence of nNOS and eNOS in the surface epithelium, stroma, oocytes, thecal cells, and endothelial cells of blood vessels. Positive immunoreactions for nNOS and iNOS were detected in the granulosa cells from multilaminar and antral follicles, but not in those of unilaminar follicles. iNOS was detected in the surface epithelium, oocytes, and theca of multilaminar and antral follicles. Taking all of the findings into consideration, the observed differential expression of the three NOS isoforms in the ovary suggests a role for nitric oxide in modulating reproduction in pigs.
Animals ; Blotting, Western/veterinary ; Female ; Immunohistochemistry/veterinary ; Nerve Tissue Proteins/*biosynthesis ; Nitric Oxide/metabolism ; Nitric Oxide Synthase/*biosynthesis ; Nitric Oxide Synthase Type I ; Nitric Oxide Synthase Type II ; Nitric Oxide Synthase Type III ; Ovarian Follicle/*enzymology/growth&development ; Swine/*physiology

OBJECTIVES: This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases. METHODS: We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression. RESULTS: Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity. CONCLUSIONS In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.

OBJECTIVES: This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases. METHODS: We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression. RESULTS: Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity. CONCLUSIONS In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.

OBJECTIVES: This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases. METHODS: We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression. RESULTS: Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity. CONCLUSIONS In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.

OBJECTIVES: This study investigated the general characteristics of laboratory-confirmed mpox patients in the Capital Region of Korea, as well as the risk factors for mpox infection, particularly focusing on the characteristics of polymerase chain reaction (PCR)-positive and PCR-negative cases. METHODS: We investigated 160 adults, excluding 4 minors, from 164 suspected mpox patients reported in Seoul, Gyeonggi, Incheon, and Gangwon from June 21, 2022 to October 31, 2023. Data were collected via telephone and face-to-face interviews. A statistical analysis of the general characteristics of the infection was conducted using frequency analysis and logistic regression. RESULTS: Of the 160 suspected cases of mpox, 59.3% (n=95) tested positive via mpox-PCR. Among the confirmed cases, 97.9% (n=93) were male. PCR-positive patients typically presented with genital and anal skin rashes or mucosal lesions, accompanied by pain. Additionally, 35.5% (n=33) of the male patients had human immunodeficiency virus (HIV) infections. Most confirmed cases (94.7%, 90/95) were believed to have contracted mpox through sexual contact during the maximal incubation period of 21 days prior to symptom onset, with a significant number reporting same-sex or casual contact. The most commonly collected and highest-yielding specimens from PCR-positive patients were from skin or mucosal lesions, whereas blood samples demonstrated the lowest percent positivity. CONCLUSIONS In the Capital Region, most PCR-positive cases were male patients in their 30s who had sexual contacts and exhibited symptoms, aligning with findings from previous studies. These results provide a foundation for the differential diagnosis concerning mpox infection and the selection of PCR-test samples in clinical settings.

OBJECTIVES: This study was aimed to investigate the associations of childhood trauma with psychopathology and clinical characteristics in patients with schizophrenia. METHODS: This study enrolled 66 inpatients with schizophrenia. Korean Childhood Trauma Questionnaire (K-CTQ) and Life Event Questionnaire (LEQ) were administered to assess childhood trauma. Psychopatholgy and clinical characteristics were assessed with the Positive and Negative Syndrome Scale (PANSS), Beck Depression Inventory (BDI), Korean Version of Internalized Stigma of Mental Illness (K-ISMI), Perceived Stress Scale (PSS), and visual analogue scale of EuroQoL-5 Dimension Index (EQ-5D). RESULTS: Total scores on K-CTQ were positively associated with scores on the BDI, K-ISMI, PSS, and PANSS and negatively associated with the score on the EQ-5D. Among subscales of K-CTQ, emotional abuse was significantly associated with all measures for psychopathology and clinical characteristics. Patients with physical abuse (36.5%), emotional abuse (30.2%), or bullying (30.6%) according to the LEQ showed sighificanlty higher the ISMI score and lower EQ-5D score. Emotional abuse and bullying were also significantly associated with higher scores on BDI and/or PSS. CONCLUSION: Our results suggest that childhood trauma negatively influences on internalized stigma, depression, perceived stress and quality of life in patients with schizophrenia. Clinicians should carefully evalute and manage childhood traumatic experience of patients with schizophrenia.
Bullying ; Depression ; Humans ; Inpatients ; Physical Abuse ; Psychopathology* ; Quality of Life ; Schizophrenia*

OBJECTIVES: This study was aimed to investigate the associations of childhood trauma with psychopathology and clinical characteristics in patients with schizophrenia. METHODS: This study enrolled 66 inpatients with schizophrenia. Korean Childhood Trauma Questionnaire (K-CTQ) and Life Event Questionnaire (LEQ) were administered to assess childhood trauma. Psychopatholgy and clinical characteristics were assessed with the Positive and Negative Syndrome Scale (PANSS), Beck Depression Inventory (BDI), Korean Version of Internalized Stigma of Mental Illness (K-ISMI), Perceived Stress Scale (PSS), and visual analogue scale of EuroQoL-5 Dimension Index (EQ-5D). RESULTS: Total scores on K-CTQ were positively associated with scores on the BDI, K-ISMI, PSS, and PANSS and negatively associated with the score on the EQ-5D. Among subscales of K-CTQ, emotional abuse was significantly associated with all measures for psychopathology and clinical characteristics. Patients with physical abuse (36.5%), emotional abuse (30.2%), or bullying (30.6%) according to the LEQ showed sighificanlty higher the ISMI score and lower EQ-5D score. Emotional abuse and bullying were also significantly associated with higher scores on BDI and/or PSS. CONCLUSION: Our results suggest that childhood trauma negatively influences on internalized stigma, depression, perceived stress and quality of life in patients with schizophrenia. Clinicians should carefully evalute and manage childhood traumatic experience of patients with schizophrenia.
Bullying ; Depression ; Humans ; Inpatients ; Physical Abuse ; Psychopathology* ; Quality of Life ; Schizophrenia*

Hepatitis A virus (HAV) is mostly transmitted by the oral-fecal route. However, rare cases of transmission via blood transfusion still exist. A retrospective study was designed to trace a case of transfusion transmitted HAV (TTHAV) infection through the Post Donation Infection (PDI) system in Korea in 2006. We report here on a case of TTHAV that was identified through a lookback study. A 35-year old woman received 6 units of packed red cell transfusion when undergoing Caesarian section in a hospital. Ten days later, she developed a high fever and sore throat. Anorexia and abdominal pain developed in 45 days after transfusion. She was diagnosed with acute tonsillitis at the hospital, and she was not aware of her HAV infection at that time. Then, a donor informed the blood center of his HAV infection 10 days after donation to request his blood be discarded. The recipients of the blood were traced and epidemiological studies lead to the patient, which prompted her serum to be collected and tested. Finally, TTHAV was identified for this patient with positive anti-HAV IgG/IgM results. This is the first case of TTHAV to be identified through the HAV lookback study in Korea.
Abdominal Pain ; Anorexia ; Blood Transfusion ; Epidemiologic Studies ; Female ; Fever ; Hepatitis ; Hepatitis A ; Hepatitis A Antibodies ; Hepatitis A virus ; Humans ; Korea ; Palatine Tonsil ; Pharyngitis ; Retrospective Studies ; Tissue Donors ; Tonsillitis