1.Gestational Diabetes Mellitus: Mechanisms Underlying Maternal and Fetal Complications
Jooyeop LEE ; Na Keum LEE ; Joon Ho MOON
Endocrinology and Metabolism 2025;40(1):10-25
Gestational diabetes mellitus (GDM) affects over 10% of all pregnancies, both in Korea and worldwide. GDM not only increases the risk of adverse pregnancy outcomes such as preeclampsia, preterm birth, macrosomia, neonatal hypoglycemia, and shoulder dystocia, but it also significantly increases the risk of developing postpartum type 2 diabetes mellitus and cardiovascular disease in the mother. Additionally, GDM is linked to a higher risk of childhood obesity and diabetes in offspring, as well as neurodevelopmental disorders, including autistic spectrum disorder. This review offers a comprehensive summary of clinical epidemiological studies concerning maternal and fetal complications and explores mechanistic investigations that reveal the underlying pathophysiology.
2.Gestational Diabetes Mellitus: Mechanisms Underlying Maternal and Fetal Complications
Jooyeop LEE ; Na Keum LEE ; Joon Ho MOON
Endocrinology and Metabolism 2025;40(1):10-25
Gestational diabetes mellitus (GDM) affects over 10% of all pregnancies, both in Korea and worldwide. GDM not only increases the risk of adverse pregnancy outcomes such as preeclampsia, preterm birth, macrosomia, neonatal hypoglycemia, and shoulder dystocia, but it also significantly increases the risk of developing postpartum type 2 diabetes mellitus and cardiovascular disease in the mother. Additionally, GDM is linked to a higher risk of childhood obesity and diabetes in offspring, as well as neurodevelopmental disorders, including autistic spectrum disorder. This review offers a comprehensive summary of clinical epidemiological studies concerning maternal and fetal complications and explores mechanistic investigations that reveal the underlying pathophysiology.
3.Gestational Diabetes Mellitus: Mechanisms Underlying Maternal and Fetal Complications
Jooyeop LEE ; Na Keum LEE ; Joon Ho MOON
Endocrinology and Metabolism 2025;40(1):10-25
Gestational diabetes mellitus (GDM) affects over 10% of all pregnancies, both in Korea and worldwide. GDM not only increases the risk of adverse pregnancy outcomes such as preeclampsia, preterm birth, macrosomia, neonatal hypoglycemia, and shoulder dystocia, but it also significantly increases the risk of developing postpartum type 2 diabetes mellitus and cardiovascular disease in the mother. Additionally, GDM is linked to a higher risk of childhood obesity and diabetes in offspring, as well as neurodevelopmental disorders, including autistic spectrum disorder. This review offers a comprehensive summary of clinical epidemiological studies concerning maternal and fetal complications and explores mechanistic investigations that reveal the underlying pathophysiology.
4.Gestational Diabetes Mellitus: Mechanisms Underlying Maternal and Fetal Complications
Jooyeop LEE ; Na Keum LEE ; Joon Ho MOON
Endocrinology and Metabolism 2025;40(1):10-25
Gestational diabetes mellitus (GDM) affects over 10% of all pregnancies, both in Korea and worldwide. GDM not only increases the risk of adverse pregnancy outcomes such as preeclampsia, preterm birth, macrosomia, neonatal hypoglycemia, and shoulder dystocia, but it also significantly increases the risk of developing postpartum type 2 diabetes mellitus and cardiovascular disease in the mother. Additionally, GDM is linked to a higher risk of childhood obesity and diabetes in offspring, as well as neurodevelopmental disorders, including autistic spectrum disorder. This review offers a comprehensive summary of clinical epidemiological studies concerning maternal and fetal complications and explores mechanistic investigations that reveal the underlying pathophysiology.
5.Visual and Auditory Sensory Impairments Differentially Relate with Alzheimer’s Pathology
Gihwan BYEON ; Min Soo BYUN ; Dahyun YI ; Joon Hyung JUNG ; Nayeong KONG ; Yoonyoung CHANG ; MUSUNG KEUM ; Gijung JUNG ; Hyejin AHN ; Jun-Young LEE ; Yu Kyeong KIM ; Koung Mi KANG ; Chul-Ho SOHN ; Dong Young LEE ;
Clinical Psychopharmacology and Neuroscience 2024;22(4):610-623
Objective:
We intended to investigate the relationships between visual sensory impairment (VSI) or auditory sensory impairment (ASI) and brain pathological changes associated with cognitive decline in older adults.
Methods:
We primarily tried to examine whether each sensory impairment is related to Alzheimer’s disease (AD) pathology, specifically beta-amyloid (Aβ) deposition, through both cross-sectional and longitudinal approaches in cognitively unimpaired older adults. Self-report questionnaires on vision and hearing status were administered at the baseline.Neuroimaging scans including brain [ 11 C] Pittsburgh Compound B PET and MRI, as well as clinical assessments, were performed at baseline and 2-year follow-up.
Results:
Cross-sectional analyses showed that the VSI-positive group had significantly higher Aβ deposition than the VSI-negative group, whereas there was no significant association between ASI positivity and Aβ deposition. Longitudinal analyses revealed that VSI positivity at baseline was significantly associated with increased Aβ deposition over 2 years (β = 0.153, p = 0.025), although ASI positivity was not (β = 0.045, p = 0.518). VSI positivity at baseline was also significantly associated with greater atrophic changes in AD-related brain regions over the 2-year follow-up period (β = −0.207, p = 0.005), whereas ASI positivity was not (β = 0.024, p = 0.753). Neither VSI nor ASI positivity was related to cerebrovascular injury, as measured based on the white matter hyperintensity volume.
Conclusion
The findings suggest that VSI is probably related to AD-specific pathological changes, which possibly mediate the reported relationship between VSI and cognitive decline. In contrast, ASI appears not associated with AD pathologies but may contribute to cognitive decline via other mechanisms.
6.Visual and Auditory Sensory Impairments Differentially Relate with Alzheimer’s Pathology
Gihwan BYEON ; Min Soo BYUN ; Dahyun YI ; Joon Hyung JUNG ; Nayeong KONG ; Yoonyoung CHANG ; MUSUNG KEUM ; Gijung JUNG ; Hyejin AHN ; Jun-Young LEE ; Yu Kyeong KIM ; Koung Mi KANG ; Chul-Ho SOHN ; Dong Young LEE ;
Clinical Psychopharmacology and Neuroscience 2024;22(4):610-623
Objective:
We intended to investigate the relationships between visual sensory impairment (VSI) or auditory sensory impairment (ASI) and brain pathological changes associated with cognitive decline in older adults.
Methods:
We primarily tried to examine whether each sensory impairment is related to Alzheimer’s disease (AD) pathology, specifically beta-amyloid (Aβ) deposition, through both cross-sectional and longitudinal approaches in cognitively unimpaired older adults. Self-report questionnaires on vision and hearing status were administered at the baseline.Neuroimaging scans including brain [ 11 C] Pittsburgh Compound B PET and MRI, as well as clinical assessments, were performed at baseline and 2-year follow-up.
Results:
Cross-sectional analyses showed that the VSI-positive group had significantly higher Aβ deposition than the VSI-negative group, whereas there was no significant association between ASI positivity and Aβ deposition. Longitudinal analyses revealed that VSI positivity at baseline was significantly associated with increased Aβ deposition over 2 years (β = 0.153, p = 0.025), although ASI positivity was not (β = 0.045, p = 0.518). VSI positivity at baseline was also significantly associated with greater atrophic changes in AD-related brain regions over the 2-year follow-up period (β = −0.207, p = 0.005), whereas ASI positivity was not (β = 0.024, p = 0.753). Neither VSI nor ASI positivity was related to cerebrovascular injury, as measured based on the white matter hyperintensity volume.
Conclusion
The findings suggest that VSI is probably related to AD-specific pathological changes, which possibly mediate the reported relationship between VSI and cognitive decline. In contrast, ASI appears not associated with AD pathologies but may contribute to cognitive decline via other mechanisms.
7.Visual and Auditory Sensory Impairments Differentially Relate with Alzheimer’s Pathology
Gihwan BYEON ; Min Soo BYUN ; Dahyun YI ; Joon Hyung JUNG ; Nayeong KONG ; Yoonyoung CHANG ; MUSUNG KEUM ; Gijung JUNG ; Hyejin AHN ; Jun-Young LEE ; Yu Kyeong KIM ; Koung Mi KANG ; Chul-Ho SOHN ; Dong Young LEE ;
Clinical Psychopharmacology and Neuroscience 2024;22(4):610-623
Objective:
We intended to investigate the relationships between visual sensory impairment (VSI) or auditory sensory impairment (ASI) and brain pathological changes associated with cognitive decline in older adults.
Methods:
We primarily tried to examine whether each sensory impairment is related to Alzheimer’s disease (AD) pathology, specifically beta-amyloid (Aβ) deposition, through both cross-sectional and longitudinal approaches in cognitively unimpaired older adults. Self-report questionnaires on vision and hearing status were administered at the baseline.Neuroimaging scans including brain [ 11 C] Pittsburgh Compound B PET and MRI, as well as clinical assessments, were performed at baseline and 2-year follow-up.
Results:
Cross-sectional analyses showed that the VSI-positive group had significantly higher Aβ deposition than the VSI-negative group, whereas there was no significant association between ASI positivity and Aβ deposition. Longitudinal analyses revealed that VSI positivity at baseline was significantly associated with increased Aβ deposition over 2 years (β = 0.153, p = 0.025), although ASI positivity was not (β = 0.045, p = 0.518). VSI positivity at baseline was also significantly associated with greater atrophic changes in AD-related brain regions over the 2-year follow-up period (β = −0.207, p = 0.005), whereas ASI positivity was not (β = 0.024, p = 0.753). Neither VSI nor ASI positivity was related to cerebrovascular injury, as measured based on the white matter hyperintensity volume.
Conclusion
The findings suggest that VSI is probably related to AD-specific pathological changes, which possibly mediate the reported relationship between VSI and cognitive decline. In contrast, ASI appears not associated with AD pathologies but may contribute to cognitive decline via other mechanisms.
8.Visual and Auditory Sensory Impairments Differentially Relate with Alzheimer’s Pathology
Gihwan BYEON ; Min Soo BYUN ; Dahyun YI ; Joon Hyung JUNG ; Nayeong KONG ; Yoonyoung CHANG ; MUSUNG KEUM ; Gijung JUNG ; Hyejin AHN ; Jun-Young LEE ; Yu Kyeong KIM ; Koung Mi KANG ; Chul-Ho SOHN ; Dong Young LEE ;
Clinical Psychopharmacology and Neuroscience 2024;22(4):610-623
Objective:
We intended to investigate the relationships between visual sensory impairment (VSI) or auditory sensory impairment (ASI) and brain pathological changes associated with cognitive decline in older adults.
Methods:
We primarily tried to examine whether each sensory impairment is related to Alzheimer’s disease (AD) pathology, specifically beta-amyloid (Aβ) deposition, through both cross-sectional and longitudinal approaches in cognitively unimpaired older adults. Self-report questionnaires on vision and hearing status were administered at the baseline.Neuroimaging scans including brain [ 11 C] Pittsburgh Compound B PET and MRI, as well as clinical assessments, were performed at baseline and 2-year follow-up.
Results:
Cross-sectional analyses showed that the VSI-positive group had significantly higher Aβ deposition than the VSI-negative group, whereas there was no significant association between ASI positivity and Aβ deposition. Longitudinal analyses revealed that VSI positivity at baseline was significantly associated with increased Aβ deposition over 2 years (β = 0.153, p = 0.025), although ASI positivity was not (β = 0.045, p = 0.518). VSI positivity at baseline was also significantly associated with greater atrophic changes in AD-related brain regions over the 2-year follow-up period (β = −0.207, p = 0.005), whereas ASI positivity was not (β = 0.024, p = 0.753). Neither VSI nor ASI positivity was related to cerebrovascular injury, as measured based on the white matter hyperintensity volume.
Conclusion
The findings suggest that VSI is probably related to AD-specific pathological changes, which possibly mediate the reported relationship between VSI and cognitive decline. In contrast, ASI appears not associated with AD pathologies but may contribute to cognitive decline via other mechanisms.
9.Characteristics of Psychiatric Patients Referred by Police to an Emergency Department
Heeyeon KEUM ; Jangho PARK ; Kukju KWEON ; Joon Ho AHN
Journal of Korean Neuropsychiatric Association 2019;58(3):230-237
OBJECTIVES: This study compared the demographic and clinical characteristics of police referrals with referrals from other sources to a psychiatric emergency department. METHODS: A retrospective cross-sectional study was conducted on the data from the psychiatric emergency department of Ulsan University Hospital from January 2014 to October 2017. The study sample consisted of 79 psychiatric patients who were referred by police, and the characteristics of this group were compared with those of 240 psychiatric patients who were referred by other sources. The collected data were analyzed using a chi-square, Fisher's exact test, and independent sample t-tests. RESULTS: Among the 1768 psychiatric emergency visits, 89 (5.0%) were referred by police, and among the 79 referrals by police chosen as the study group, there were 4(5.1%) cases of emergent psychiatric admission. These patients referred by police were more likely to be male and in a lower socio-economic status. Police referrals were more likely to exhibit violent behavior, be restrained, and more likely to visit after working hours. They were notified more rapidly to the psychiatric department, less notified to other departments, and visited the psychiatric outpatient clinics less after discharge from the emergency department. CONCLUSION: The study results highlight the importance of understanding the characteristics of psychiatric emergency patients referred by police and identifying the problems of the current psychiatric emergency services. Systems need to be developed that clarify the roles of police in psychiatric emergencies and facilitate collaboration between police and mental health institutions.
Ambulatory Care Facilities
;
Cooperative Behavior
;
Cross-Sectional Studies
;
Emergencies
;
Emergency Service, Hospital
;
Emergency Services, Psychiatric
;
Humans
;
Male
;
Mental Health
;
Police
;
Referral and Consultation
;
Retrospective Studies
;
Ulsan
10.Expression of Hepatocyte Hepatitis B Core Antigen and Hepatitis B Surface Antigen as a Marker in the Management of Chronic Hepatitis B Patients.
Sun Young YIM ; Tae Hyung KIM ; Suh Sang JUN ; Eun Sun KIM ; Bora KEUM ; Yeon Seok SEO ; Hyung Joon YIM ; Yoon Tae JEEN ; Hoon Jai CHUN ; Hong Sik LEE ; Soon Ho UM ; Chang Duck KIM ; Nam Hee WON ; Ho Sang RYU
Gut and Liver 2017;11(3):417-425
BACKGROUND/AIMS: We aimed to clarify the association of hepatitis B surface antigen (HBsAg)/hepatitis B core antigen (HBcAg) with the disease status and treatment response in patients with chronic hepatitis B (CHB). METHODS: We investigated 171 biopsy-proven entecavir-treated CHB patients (109 hepatitis B e antigen [HBeAg]-positive, 62 HBeAg-negative). HBcAg expression was positive when ≥10% of hepatocytes stained, and classified into nuclear, mixed, and cytoplasmic patterns. HBsAg expressions were intracytoplasmic (diffuse, globular, and submembranous) and membranous. The histologic activity index (HAI) and fibrosis stage followed Ishak system. RESULTS: In HBeAg-positive patients, older age, increased HAI score, advanced fibrosis, and reduced viral load were observed when HBcAg expression shifted from nucleus to cytoplasm in HBcAg-positive patients, and HBsAg expression from non-submembranous to submembranous in HBcAg-negative patients (all, p<0.05). In HBeAg-negative patients, only intracytoplasmic HBsAg expression patterns had clinical relevance with decreased ALT levels and viremia. In HBeAg-positive patients without favorable predictors of virologic response, negative HBcAg and membranous HBsAg expression predicted greater virologic response (both, p<0.05). The probability of HBeAg seroclearance was higher in patients with increased HAI or lacking HBcAg expression (both, p<0.05). Higher serum HBsAg levels and hepatocyte HBcAg positivity were associated with reduced serum HBsAg during first and post-first year treatment, respectively (both, p<0.05). CONCLUSIONS: Hepatocyte HBcAg/HBsAg expression is a good marker for disease status and predicting treatment response.
Cytoplasm
;
Fibrosis
;
Hepatitis B Core Antigens*
;
Hepatitis B e Antigens
;
Hepatitis B Surface Antigens*
;
Hepatitis B*
;
Hepatitis B, Chronic*
;
Hepatitis*
;
Hepatitis, Chronic*
;
Hepatocytes*
;
Humans
;
Viral Load
;
Viremia

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