1.Prevalence and factors influencing postpartum depression and its culture-specific cutoffs for women in Asia: a scoping review
Bora MOON ; Hyun Kyoung KIM ; Ju-Hee NHO ; Hyunkyung CHOI ; ChaeWeon CHUNG ; Sook Jung KANG ; Ju Hee KIM ; Ju-Young LEE ; Sihyun PARK ; Gisoo SHIN ; Ju-Eun SONG ; Min Hee LEE ; Sue KIM
The Ewha Medical Journal 2025;48(1):e15-
The prevalence of postpartum depression (PPD) in Asia is reported to range from 13.53% to 22.31%. However, there remains a gap in the identification of PPD, particularly regarding cultural cutoff points. Therefore, the purpose of this scoping review was to determine the prevalence and associated factors of PPD in Eastern, South-eastern, Western, and Southern Asian countries and analyze the cutoff points of the Edinburgh Postnatal Depression Scale (EPDS) used across these countries. Following Arksey and O'Malley’s five-step scoping review framework, the population was defined as mothers, the concept as the EPDS, and the context as the Asian region. A literature search was conducted using PubMed, Embase, CINAHL, PsycINFO, and Web of Science. The data analysis focused on demographic characteristics, EPDS cutoffs and features, PPD prevalence, and its associated factors. Nineteen studies were selected. Most countries used translated versions of the EPDS with demonstrated reliability and validity. The cutoff scores varied, with most using scores of 10 or higher. The prevalence of PPD ranged from 5.1% to 78.7%. Key associated factors for PPD included cultural factors such as relationships with in-laws and preferences for the newborn’s sex. To improve the accuracy of PPD screening in Asia, the EPDS should be used consistently, and appropriate cutoff criteria must be established. In addition, prevention strategies and programs that reflect the cultural characteristics and social context of Asia need to be developed for the early detection and prevention of PPD.
2.Injectable Drugs in Diabetes Treatment: Insulin versus Incretin
Journal of Korean Diabetes 2025;26(1):28-31
Type 2 diabetes mellitus (T2DM) is a chronic condition characterized by hyperglycemia. While lifestyle modifications and oral medications are initial treatments, many patients require injectable therapies like insulin and incretin-based drugs. Insulin therapy, a cornerstone treatment for T2DM, can effectively control blood sugar but is associated with hypoglycemia and weight gain. Incretin-based therapies, such as glucagon-like peptide-1 (GLP-1) receptor agonists offer improved glycemic control, weight loss, and reduced cardiovascular risk. Recent studies have shown the superiority of incretin-based therapies over basal insulin. Among these, GLP-1/GIP (glucose-dependent insulinotropic polypeptide) receptor dual agonists like tirzepatide have demonstrated significant weight loss and improved glycemic control. Selection of injectable therapy should be individualized based on factors like glycemic goals, cardiovascular risk, hypoglycemia risk, and patient preference. While insulin remains a useful option, incretin-based therapies, especially newer agents, offer promising therapeutic benefits for many patients with T2DM.
3.Predictive value and optimal cut-off level of high-sensitivity troponin T in patients with acute pulmonary embolism
Moojun KIM ; Chang-Ok SEO ; Yong-Lee KIM ; Hangyul KIM ; Hye Ree KIM ; Yun Ho CHO ; Jeong Yoon JANG ; Jong-Hwa AHN ; Min Gyu KANG ; Kyehwan KIM ; Jin-Sin KOH ; Seok-Jae HWANG ; Jin Yong HWANG ; Jeong Rang PARK
The Korean Journal of Internal Medicine 2025;40(1):65-77
Background/Aims:
Elevated troponin levels predict in-hospital mortality and influence decisions regarding thrombolytic therapy in patients with acute pulmonary embolism (PE). However, the usefulness of high-sensitivity troponin T (hsTnT) regarding PE remains uncertain. We aimed to establish the optimal cut-off level and compare its performance for precise risk stratification.
Methods:
374 patients diagnosed with acute PE were reviewed. PE-related adverse outcomes, a composite of PE-related deaths, cardiopulmonary resuscitation incidents, systolic blood pressure < 90 mmHg, and all-cause mortality within 30 days were evaluated. The optimal hsTnT cut-off for all-cause mortality, and the net reclassification index (NRI) was used to assess the incremental value in risk stratification.
Results:
Among 343 normotensive patients, 17 (5.0%) experienced all-cause mortality, while 40 (10.7%) had PE-related adverse outcomes. An optimal hsTnT cut-off value of 60 ng/L for all-cause mortality (AUC 0.74, 95% CI 0.61–0.85, p < 0.001) was identified, which was significantly associated with PE-related adverse outcomes (OR 4.07, 95% CI 2.06–8.06, p < 0.001). Patients with hsTnT ≥ 60 ng/L were older, hypotensive, had higher creatinine levels, and right ventricular dysfunction signs. Combining hsTnT ≥ 60 ng/L with simplified pulmonary embolism severity index ≥1 provided additional prognostic information. Reclassification analysis showed a significant shift in risk categories, with an NRI of 1.016 ± 0.201 (p < 0.001).
Conclusions
We refined troponin’s predictive value in patients with acute PE, proposing a new cut-off value of hsTnT ≥ 60 ng/L. Validation through large-scale studies is essential to offer clinically useful guidance for managing patient population.
4.Predicting renal function using fundus photography: role of confounders
Hyun-Woong PARK ; Hae Ri KIM ; Ki Yup NAM ; Bum Jun KIM ; Taeseen KANG
The Korean Journal of Internal Medicine 2025;40(2):310-320
Background/Aims:
The kidneys and retina are highly vascularized organs that frequently exhibit shared pathologies, with nephropathy often associated with retinopathy. Previous studies have successfully predicted estimated glomerular filtration rates (eGFRs) using fundus photographs. We evaluated the performance of the Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formulas in eGFR prediction.
Methods:
We enrolled patients with fundus photographs and corresponding creatinine measurements taken on the same date. One photograph per eye was randomly selected, resulting in a final dataset of 45,108 patients (88,260 photographs). Data including sex, age, and blood creatinine levels were collected for eGFR calculation using the MDRD and CKD-EPI formulas. EfficientNet B3 models were used to predict each parameter.
Results:
Deep neural network models accurately predicted age and sex using fundus photographs. Sex was identified as a confounding variable in creatinine prediction. The MDRD formula was more susceptible to this confounding effect than the CKD-EPI formula. Notably, the CKD-EPI formula demonstrated superior performance compared to the MDRD formula (area under the curve 0.864 vs. 0.802).
Conclusions
Fundus photographs are a valuable tool for screening renal function using deep neural network models, demonstrating the role of noninvasive imaging in medical diagnostics. However, these models are susceptible to the influence of sex, a potential confounding factor. The CKD-EPI formula, less susceptible to sex bias, is recommended to obtain more reliable results.
5.Sex-specific impact of the COVID-19 outbreak on the incidence of metabolic syndrome: a comparative study of 2018–2019 and 2020–2021
Kyeong-Hyeon CHUN ; Hyun-Jin KIM ; Dae Ryong KANG ; Jang Young KIM ; Wonjin KIM ; Yong Whi JEONG ; Seung Hwan HAN ; Kwang Kon KOH ;
The Korean Journal of Internal Medicine 2025;40(2):262-274
Background/Aims:
The coronavirus disease 2019 (COVID-19) pandemic has significantly impacted global health, exacerbated metabolic health issues, and altered lifestyle behaviors. This study examined the sex-specific impact of the COVID-19 outbreak on the incidence of metabolic syndrome using data from the Korea National Health and Nutrition Examination Survey (KNHANES).
Methods:
Data from the KNHANES VII (2018) and VIII (2019–2021), including 15,499 participants, were analyzed. The study population was stratified by sex, and further subdivisions were conducted based on the timeframe relative to the COVID-19 outbreak. Variables such as age, education level, household income, smoking status, and high-risk drinking were analyzed to assess their influence on the prevalence of metabolic syndrome.
Results:
The overall prevalence of metabolic syndrome significantly increased from 28.11% before the outbreak to 29.69% after the outbreak. Both males and females reported significant increases in waist circumference and fasting glucose levels. Age and education level differentially influenced the prevalence of metabolic syndrome between the sex. Smoking was significantly associated with increased prevalence in males, whereas high-risk drinking was associated with increased prevalence in males and decreased prevalence in females.
Conclusions
The COVID-19 pandemic has significantly increased the prevalence of metabolic syndrome with notable sex-specific differences. These findings highlight the need for sex-specific public health interventions to mitigate the impact of the pandemic on metabolic health.
6.Clinical approach to sexually transmitted infections and pelvic inflammatory disease in women with acute pyelonephritis
Mi-Hee KIM ; Hyojin AHN ; Soyeon KANG ; Ahra LEE ; Seong-Heon WIE
The Korean Journal of Internal Medicine 2025;40(3):482-490
Background/Aims:
This study aimed to investigate co-occurrence and clinical characteristics of sexually transmitted infections (STIs) and pelvic inflammatory disease (PID) in women hospitalized for acute pyelonephritis (APN).
Methods:
This single-center retrospective study reviewed medical records of inpatients with APN from January 2019 to February 2023 and identified records of 142 patients who were referred to a gynecologist to evaluate gynecological diseases including STIs.
Results:
Of the 142 patients, 47 were tested positive for sexually transmitted pathogens in nucleic acid amplification testing, confirming the presence of STIs. In patients with APN, those with STIs were more likely to have lower abdominal pain or cervical motion tenderness (CMT) on pelvic examination and leukocytosis (> 14.5 × 109/L) than those without STIs. Of the 93 patients who underwent pelvic examination, 34 had CMT with one or more of additional criteria for the clinical diagnosis of PID, such as abnormal vaginal discharge and leukorrhea confirmed by microscopic examination, which could be clinically diagnosed as PID.
Conclusions
In sexually active women with APN, it is important to evaluate the possibility of STIs and PID, considering several risk factors such as lower abdominal pain, abnormal vaginal discharge, CMT, and leukocytosis.
7.Herpes zoster infection in patients with inflammatory bowel disease
The Korean Journal of Internal Medicine 2025;40(3):347-356
Patients with inflammatory bowel disease (IBD) are at increased risk of herpes zoster (HZ), particularly those receiving immunosuppressive treatments such as corticosteroids, thiopurines, and biologics, which elevate the likelihood of varicella-zoster virus reactivation. Despite this, vaccination rates among patients with IBD remain low. Shingrix, a recombinant zoster vaccine, is generally preferred because of its high efficacy (> 90%) and safety profile in immunocompromised individuals, unlike the live attenuated zoster vaccine (Zostavax). This review underscores the importance of HZ vaccination for patients aged ≥ 50 years, as well as for younger patients receiving high-risk therapies such as JAK inhibitors. Tailored vaccination strategies based on individual risk factors, including disease severity, medication use, and ethnicity, may enhance prevention. Given the higher incidence of HZ in certain populations, such as those in Korea, vaccination recommendations should be adapted accordingly. Further research is needed to evaluate the long-term effectiveness of Shingrix in younger patients with IBD to ensure sustained protection and prevent complications, such as postherpetic neuralgia.
8.Differences in sputum microbiota based on cure status of patients with nontuberculous mycobacterial pulmonary disease
Noeul KANG ; Su-Young KIM ; Dae Hun KIM ; Byung Woo JHUN
The Korean Journal of Internal Medicine 2025;40(3):449-457
Background/Aims:
To analyze the characteristics of the sputum microbiota of patients with nontuberculous mycobacteria pulmonary disease (NTM-PD) based on treatment status.
Methods:
Twenty-eight sputum samples from 14 patients with NTM-PD, including 14 samples from the microbiologically cured group (7 at baseline and 7 during follow-up) and 14 from the treatment-refractory group (7 at baseline and 7 during follow-up) were included in this study. Bacterial microbiota was analyzed by sequencing the V3–V4 region of the 16S rRNA gene.
Results:
Among the 14 patients, most had infections with Mycobacterium avium complex (n = 6), followed by Mycobacterium abscessus (n = 5); three patients exhibited mixed infection with both organisms. Alpha-diversity was higher in the cured group than in the treatment refractory group in both the baseline sputum (ACE, p = 0.005; Chao1, p = 0.010; Jackknife, p = 0.022, 0.043; Shannon, p = 0.048) and follow-up sputum (ACE, p = 0.018). Linear discriminant analysis effect size revealed that several taxa showed differential distributions based on treatment status. At the species level, Streptococcus pneumoniae, Prevotella melaninogenica, Haemophilus parahaemolyticus, Haemophilus haemolyticus, Fusobacterium nucleatum, Neisseria elongata, and Prevotella denticola were more abundant in sputum from the microbiologically cured group than in that from the refractory group (all p < 0.05).
Conclusions
In contrast to patients with treatment-refractory NTM-PD, those with stable disease without recurrence had higher microbial diversity in their sputum, including several predominant taxa.
9.The mutual interaction of TRPC5 channel with polycystin proteins
Misun KWAK ; Hana KANG ; Jinhyeong KIM ; Yejun HONG ; Byeongseok JEONG ; Jongyun MYEONG ; Insuk SO
The Korean Journal of Physiology and Pharmacology 2025;29(1):93-108
PKD1 regulates a number of cellular processes through the formation of complexes with the PKD2 ion channel or transient receptor potential classical (TRPC) 4 in the endothelial cells. Although Ca 2+ modulation by polycystins has been reported between PKD1 and TRPC4 channel or TRPC1 and PKD2, the function with TRPC subfamily regulated by PKD2 has remained elusive. We confirmed TRPC4 or TRPC5 channel activation via PKD1 by modulating G-protein signaling without change in TRPC4/C5 translocation. The activation of TRPC4/C5 channels by intracellular 0.2 mM GTPγS was not significantly different regardless of the presence or absence of PKD1. Furthermore, the C-terminal fragment (CTF) of PKD1 did not affect TRPC4/C5 activity, likely due to the loss of the N-terminus that contains the G-protein coupled receptor proteolytic site (GPS). We also investigated whether TRPC1/C4/C5 can form a heterodimeric channel with PKD2, despite PKD2 being primarily retained in the endoplasmic reticulum (ER). Our findings show that PKD2 is targeted to the plasma membrane, particularly by TRPC5, but not by TRPC1. However, PKD2 did not coimmunoprecipitate with TRPC5 as well as with TRPC1. PKD2 decreased both basal and La 3+ -induced TRPC5 currents but increased M 3 R-mediated TRPC5 currents. Interestingly, PKD2 increased STAT3 phosphorylation with TRPC5 and decreased STAT1 phosphorylation with TRPC1. To be specific, PKD2 and TRPC1 compete to bind with TRPC5 to modulate intracellular Ca 2+ signaling and reach the plasma membrane. This interaction suggests a new therapeutic target in TRPC5 channels for improving vascular endothelial function in polycystic kidney disease.
10.Fine particulate matter induces osteoclast-mediated bone loss in mice
Hye Young MUN ; Septika PRISMASARI ; Jeong Hee HONG ; Hana LEE ; Doyong KIM ; Han Sung KIM ; Dong Min SHIN ; Jung Yun KANG
The Korean Journal of Physiology and Pharmacology 2025;29(1):9-19
Fine particulate matter (FPM) is a major component of air pollution and has emerged as a significant global health concern owing to its adverse health effects. Previous studies have investigated the correlation between bone health and FPM through cohort or review studies. However, the effects of FPM exposure on bone health are poorly understood. This study aimed to investigate the effects of FPM on bone health and elucidate these effects in vitro and in vivo using mice. Micro-CT analysis in vivo revealed FPM exposure decreased bone mineral density, trabecular bone volume/total volume ratio, and trabecular number in the femurs of mice, while increasing trabecular separation. Histological analysis showed that the FPM-treated group had a reduced trabecular area and an increased number of osteoclasts in the bone tissue. Moreover, in vitro studies revealed that low concentrations of FPM significantly enhanced osteoclast differentiation. These findings further support the notion that short-term FPM exposure negatively impacts bone health, providing a foundation for further research on this topic.

Result Analysis
Print
Save
E-mail