1.In Vivo and In Vitro Quantification of Glucose Kinetics: From Bedside to Bench
Il-Young KIM ; Sanghee PARK ; Yeongmin KIM ; Yewon CHANG ; Cheol Soo CHOI ; Sang-Hoon SUH ; Robert R. WOLFE
Endocrinology and Metabolism 2020;35(4):733-749
Like other substrates, plasma glucose is in a dynamic state of constant turnover (i.e., rates of glucose appearance [Ra glucose] into and disappearance [Rd glucose] from the plasma) while staying within a narrow range of normal concentrations, a physiological priority. Persistent imbalance of glucose turnover leads to elevations (i.e., hyperglycemia, Ra>Rd) or falls (i.e., hypoglycemia, Ra
2.A Case of Primary Autoimmune Myelofibrosis.
Yeongmin LIM ; Chi Young PARK ; Won Jung HONG ; Gwangil KIM ; Soyoung CHONG ; Doyeun OH
Korean Journal of Medicine 2014;86(5):632-636
Primary autoimmune myelofibrosis, the development of which is not preceded by a well-defined autoimmune disease, has recently been defined as a distinct clinicopathologic syndrome. We report herein a case of a 68-year-old woman who was diagnosed with primary autoimmune myelofibrosis and present a review of the literature. The patient manifested peripheral pancytopenia, was positive for autoantibodies, and developed myelofibrosis with no preceding autoimmune or hematologic disorders. Her condition was dramatically improved after administration of prednisolone.
Aged
;
Autoantibodies
;
Autoimmune Diseases
;
Female
;
Humans
;
Pancytopenia
;
Prednisolone
;
Primary Myelofibrosis*
3.Association between Change in Body Weight and Insulin Resistance in Individuals at Increased Risk of Diabetes.
Kyung Jin CHOE ; Won Jun KIM ; Sa Young SHIN ; Yeongmin WOO ; Ki Hun LEE ; Eun Jung KIM ; Myoung Sook SHIM ; Jin Yeob KIM
Korean Journal of Medicine 2015;89(6):681-689
BACKGROUND/AIMS: The present study aimed to investigate the associations between a change in body weight from 20 years of age to the present with insulin resistance and several parameters of metabolic syndrome in individuals at an increased risk of diabetes. METHODS: From patients with a diagnosis related to an increased risk of diabetes who were examined at our endocrinology clinic from January 2012 to December 2014, the present study recruited 125 individuals between 30 and 64 years of age with hemoglobin A1c levels from 5.7 to 6.4%. The change in body weight of each patient from 20 years of age to the present was retrospectively determined, and the associations of this change with insulin resistance and several parameters of metabolic syndrome were analyzed. RESULTS: The average gain in body weight after 20 years of age was 11.3 kg and there was no significance difference between the male and female patients. The proportion of overweight and obese patients at 20 years of age was 14%, but was 74% at the time of the visits to our endocrinology clinic. A change in body weight was significantly correlated with body mass index, insulin resistance, and waist circumference. Additionally, as the tertile of change in body weight increased, fasting insulin levels, insulin resistance, and the prevalence of abdominal obesity significantly increased. CONCLUSIONS: In the present study, an increase in body weight from 20 years of age to the present was correlated with insulin resistance and several parameters of metabolic syndrome in individuals at an increased risk of diabetes.
Body Mass Index
;
Body Weight*
;
Diagnosis
;
Endocrinology
;
Fasting
;
Female
;
Humans
;
Insulin Resistance*
;
Insulin*
;
Male
;
Obesity
;
Obesity, Abdominal
;
Overweight
;
Prevalence
;
Retrospective Studies
;
Waist Circumference
4.A machine learning-based approach for predicting renal function recovery in general ward patients with acute kidney injury
Nam-Jun CHO ; Inyong JEONG ; Yeongmin KIM ; Dong Ok KIM ; Se-Jin AHN ; Sang-Hee KANG ; Hyo-Wook GIL ; Hwamin LEE
Kidney Research and Clinical Practice 2024;43(4):538-547
Acute kidney injury (AKI) is a significant challenge in healthcare. While there are considerable researches dedicated to AKI patients, a crucial factor in their renal function recovery, is often overlooked. Thus, our study aims to address this issue through the development of a machine learning model to predict restoration of kidney function in patients with AKI. Methods: Our study encompassed data from 350,345 cases, derived from three hospitals. AKI was classified in accordance with the Kidney Disease: Improving Global Outcomes. Criteria for recovery were established as either a 33% decrease in serum creatinine levels at AKI onset, which was initially employed for the diagnosis of AKI. We employed various machine learning models, selecting 43 pertinent features for analysis. Results: Our analysis contained 7,041 and 2,929 patients’ data from internal cohort and external cohort respectively. The Categorical Boosting Model demonstrated significant predictive accuracy, as evidenced by an internal area under the receiver operating characteristic (AUROC) of 0.7860, and an external AUROC score of 0.7316, thereby confirming its robustness in predictive performance. SHapley Additive exPlanations (SHAP) values were employed to explain key factors impacting recovery of renal function in AKI patients. Conclusion: This study presented a machine learning approach for predicting renal function recovery in patients with AKI. The model performance was assessed across distinct hospital settings, which revealed its efficacy. Although the model exhibited favorable outcomes, the necessity for further enhancements and the incorporation of more diverse datasets is imperative for its application in real- world.
5.Spontaneous Rupture of Pancreatic Mucinous Cystadenocarcinoma: A Case Report and Review of Literature.
Yeongmin WOO ; Young Don KIM ; Woo Jin JEONG ; Hyeok Jai JANG ; Kil Hyun KANG ; Gab Jin CHEON
Korean Journal of Pancreas and Biliary Tract 2016;21(1):24-28
The pancreatic cystic lesions are known to be incidentally found up to 10-15% of patients undergoing cross-sectional imaging. And the prevalence of mucinous cystic neoplasm which has malignant potential is known to be up to 25% of all pancreatic cystic neoplasm in South Korea. The symptoms included abdominal pain, palpable mass, weight loss, loss of appetite, jaundice, asymptomatic and etc. However, spontaneous rupture of pancreatic mucinous cystadenocarcinoma (MCAC) is an extremely rare complication. Here we report a case of spontaneous rupture of pancreatic MCAC in a 72-year-old male with review of the literature. To the best of our knowledge, this is the first ruptured case of pancreatic MCAC in male patient.
Abdominal Pain
;
Aged
;
Appetite
;
Cystadenocarcinoma, Mucinous*
;
Humans
;
Jaundice
;
Korea
;
Male
;
Mucins*
;
Pancreas
;
Pancreatic Cyst
;
Prevalence
;
Rupture
;
Rupture, Spontaneous*
;
Weight Loss