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1.
Medicina (Kaunas) ; 60(4)2024 Apr 08.
Article in English | MEDLINE | ID: mdl-38674258

ABSTRACT

Background and Objectives: The European Kidney Function Consortium (EKFC) equation has been newly proposed for estimating glomerular filtration rate (eGFR) across the spectrum of age. We compared the EKFC equation with the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations in a large-scale Korean population. Materials and Methods: Using the representative Korean health examination data, the Korea National Health and Nutrition Examination Survey (KNHANES 2008-2021), the records of 91,928 subjects (including 9917 children) were analyzed. We compared the EKFC equation with CKiD, CKD-EPI 2009, and CKD-EPI 2021 equations and investigated their agreement across GFR categories. Results: In the total population, the CKD-EPI 2021 equation yielded the highest eGFR value, followed by the CKD-EPI 2009 and EKFC equations. In children, the distribution of eGFR differed significantly between the EKFC and CKiD equations (p < 0.001), with a wider range of eGFR values found with the CKiD equation. Each equation showed weak or moderate agreement on the frequency of the GFR category (κ = 0.54 between EKFC and CKD-EPI 2021; κ = 0.77 between EKFC and CKD-EPI 2009). The eGFR values found by the EKFC equation showed high or very high correlations with those by the CKiD, CKD-EPI 2009, and CKD-EPI 2021 equations (r = 0.85, 0.97, and 0.97, respectively). As eGFR values increased, bigger differences were observed between equations. Conclusions: This large-scale study demonstrates that the EKFC equation would be applicable across the entire age spectrum in Asian populations. It also underscores that national kidney health would be highly affected by an eGFR equation being implemented. Additional investigation and more caution would be warranted for the transition of eGFR equations.


Subject(s)
Glomerular Filtration Rate , Nutrition Surveys , Renal Insufficiency, Chronic , Humans , Republic of Korea/epidemiology , Male , Female , Renal Insufficiency, Chronic/physiopathology , Renal Insufficiency, Chronic/epidemiology , Child , Adult , Middle Aged , Adolescent , Aged , Kidney Function Tests/methods , Kidney Function Tests/statistics & numerical data , Kidney Function Tests/standards , Child, Preschool , Young Adult
2.
Rev Cardiovasc Med ; 24(4): 100, 2023 Apr.
Article in English | MEDLINE | ID: mdl-39076257

ABSTRACT

Background: Elevated soluble suppression of tumorigenicity 2 (sST2) levels may predict mortality in heart failure (HF) patients. The AFIAS ST2 assay (AFIAS ST2, Boditech Med Inc., Chuncheon, Korea) and ichroma ST2 assay (ichroma ST2, Boditech Med Inc.) are newly developed point-of-care (POC) assays for measuring sST2 level. We evaluated the performance of these assays, in terms of cut-off validation and prognosis, and compared them with that of the Presage ST2 assay (Presage ST2, Critical Diagnostics, San Diego, CA, USA). Methods: We validated the US FDA-claimed sST2 clinical cut-off of 35 ng/mL using 420 serum samples (298 samples from the universal sample bank of the American Association for Clinical Chemistry and 122 samples from reference individuals from Konkuk University Medical Center). We compared AFIAS ST2 and ichroma ST2 with Presage ST2, using 206 samples from patients with HF. We assessed prognosis using the three assays in 252 samples from the Barcelona ambulatory HF cohort subsets. Results: The upper reference limits of AFIAS ST2 and ichroma ST2 were within the clinical cut-off of Presage ST2. The results of AFIAS ST2 and ichroma ST2 were highly correlated with those of Presage ST2 (r = 0.82 and 0.81, respectively). Based on this cut-off, all three assays predicted cardiovascular death. Conclusions: The new POC assays, AFIAS ST2 and ichroma ST2, would be useful in clinical practice for managing HF patients, with performances equivalent to that of Presage ST2.

3.
Int J Mol Sci ; 22(2)2021 Jan 13.
Article in English | MEDLINE | ID: mdl-33451076

ABSTRACT

Porcine heart xenotransplantation is a potential treatment for patients with end-stage heart failure. To understand molecular mechanisms of graft rejection after heart transplantation, we transplanted a 31-day-old alpha-1,3-galactosyltransferase knockout (GTKO) porcine heart to a five-year-old cynomolgus monkey. Histological and transcriptome analyses were conducted on xenografted cardiac tissue at rejection (nine days after transplantation). The recipient monkey's blood parameters were analyzed on days -7, -3, 1, 4, and 7. Validation was conducted by quantitative real-time PCR (qPCR) with selected genes. A non-transplanted GTKO porcine heart from an age-matched litter was used as a control. The recipient monkey showed systemic inflammatory responses, and the rejected cardiac graft indicated myocardial infarction and cardiac fibrosis. The transplanted heart exhibited a total of 3748 differentially expressed genes compared to the non-transplanted heart transcriptome, with 2443 upregulated and 1305 downregulated genes. Key biological pathways involved at the terminal stage of graft rejection were cardiomyopathies, extracellular interactions, and ion channel activities. The results of qPCR evaluation were in agreement with the transcriptome data. Transcriptome analysis of porcine cardiac tissue at graft rejection reveals dysregulation of the key molecules and signaling pathways, which play relevant roles on structural and functional integrities of the heart.


Subject(s)
Graft Rejection , Heart Transplantation , Transplantation, Heterologous , Animals , Biomarkers , Computational Biology/methods , Female , Gene Expression , Gene Expression Profiling , Gene Ontology , Graft Rejection/genetics , Graft Rejection/immunology , Graft Rejection/prevention & control , Haplorhini , Heart Transplantation/adverse effects , Immunosuppressive Agents/pharmacology , Male , Molecular Sequence Annotation , Swine , Transcriptome , Transplantation, Heterologous/adverse effects
4.
J Heart Valve Dis ; 24(2): 197-203, 2015 Mar.
Article in English | MEDLINE | ID: mdl-26204685

ABSTRACT

BACKGROUND AND AIM OF THE STUDY: Most valve repair techniques require resection and multiple sutures. In the present study, a novel technique without resection for correction of posterior leaflet prolapse due to chordal elongation or rupture was employed, the aim being to evaluate the outcomes of a non-resecting valve repair technique in patients with posterior leaflet prolapse that caused significant mitral regurgitation (MR). METHODS: Between May 2008 and December 2010, a total of 90 consecutive patients with posterior leaflet prolapse (55 males, 35 females; mean age 51.5 ± 14.6 years) underwent patch valvuloplasty. The procedure involved suturing the free margin of the prolapsed leaflet, invagination of the folded leaflet tissue into the left ventricular side, coverage of the dimpled portion with a round bovine pericardial patch using a continuous suture technique, and reshaping of the posterior annulus using a 53- to 61-mm strip. All patients underwent postoperative echocardiography after a mean follow up of 41.9 ± 10.4 months. RESULTS: No early death occurred, but there was one late death due to a non-cardiac cause. At the last echocardiographic follow up, 81 patients (90%) showed none or trace MR, seven (7.8%) had mild MR, and two (2.2%) moderate MR. The mean mitral valve area was 2.4 ± 0.5 cm2 and the mean pressure gradient 2.8 ± 1.2 mmHg. No patient required reoperation due to recurrent or aggravated MR. CONCLUSION: In patients with posterior leaflet prolapse, the applied patch valvuloplasty technique was useful and reliable, showing excellent clinical and echocardiographic outcomes. Additional long-term evaluations with close follow up should be performed.


Subject(s)
Balloon Valvuloplasty/methods , Mitral Valve Prolapse/therapy , Suture Techniques , Adult , Aged , Female , Humans , Male , Middle Aged , Mitral Valve/diagnostic imaging , Mitral Valve Prolapse/diagnostic imaging , Treatment Outcome , Ultrasonography
5.
J Korean Med Sci ; 30(9): 1367-72, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26339181

ABSTRACT

Fulminant myocarditis has been defined as the clinical manifestation of cardiac inflammation with rapid-onset heart failure and cardiogenic shock. We report on the case of a 23-yr-old woman with pathology-proven fulminant lymphocytic myocarditis presenting shock with elevated cardiac troponin I and ST segments in V1-2, following sustained ventricular tachycardia and a complete atrioventricular block. About 55 min of intensive cardio-pulmonary resuscitation, with extracorporeal membrane oxygenation support, bridged the patient to orthotopic heart transplantation. The explanted heart revealed diffuse lymphocytic infiltration and myocyte necrosis in all four cardiac chamber walls. Aggressive mechanical circulatory support may be an essential bridge for recovery or even transplantation in patients with fulminant myocarditis with shock.


Subject(s)
Extracorporeal Membrane Oxygenation/methods , Heart Transplantation , Myocarditis/diagnosis , Myocarditis/therapy , Shock/diagnosis , Shock/prevention & control , Combined Modality Therapy/methods , Female , Humans , Myocarditis/complications , Shock/etiology , Treatment Outcome , Young Adult
6.
Metabolites ; 13(12)2023 Nov 26.
Article in English | MEDLINE | ID: mdl-38132858

ABSTRACT

Large epidemiological studies show U-shaped relationships between high-density lipoprotein cholesterol (HDL-C) levels and all-cause mortality in individuals without atherosclerotic cardiovascular diseases (ASCVD). Association in those with ASCVD by sex is unclear. We examined the association between HDL-C levels and 10-year all-cause mortality in subjects (≥40 years of age) with ASCVD using the 2010 National Health Insurance Service and the National Death Registry of Korea. We categorized HDL-C levels into three groups (low: <40 mg/dL for males, <50 mg/dL for females; high: 40-90 mg/dL for males, 50-90 mg/dL for females; extremely high: >90 mg/dL) and 10 mg/dL intervals. We conducted a sex-stratified and adjusted Cox proportional hazards analysis. Out of 1,711,548 individuals (54% female, mean age 61.4 years), 10-year mortality was observed in 218,252 (12.8%). Males had a higher mortality rate than females (16.2% vs. 9.8%; p < 0.001). When adjusting for age, body mass index, LDL-cholesterol, triglycerides, hypertension, diabetes, smoking, and alcohol consumption, the low and extremely high HDL-C groups had significantly higher hazard ratios for 10-year mortality compared to the high HDL-C group in males [1.183 (1.166-1.199), 1.359 (1.288-1.434)] and in females [1.153 (1.138-1.169), 1.095 (1.029-1.167)]. The frequency distribution bars for the 10-year mortality rate showed sex-specific nadirs of 50-59 mg/dL in males and 70-79 mg/dL in females. In this ASCVD cohort, the extremely high HDL-C (>90 mg/dL) group had 35.9% and 9.5% higher 10-year mortality risks than the high HDL-C group for males and females, respectively. There was a slightly U-shaped relationship between baseline HDL-C levels and a 10-year mortality rate, with earlier inflection in males than in females.

7.
Transplant Proc ; 55(4): 1036-1042, 2023 May.
Article in English | MEDLINE | ID: mdl-37147194

ABSTRACT

BACKGROUND: The graft survival rate of full-thickness corneal xenotransplantation (XTP) with minimal immunosuppression in genetically engineered pigs is unknown, whereas lamellar corneal XTP shows satisfactory results. We compared graft survival between full-thickness and lamellar transplantations in the same genetically engineered pig. METHODS: Six pig-to-monkey corneal transplantations were performed on 3 transgenic pigs. Two corneas harvested from 1 pig were transplanted into 2 monkeys using full-thickness and lamellar corneal xenotransplantation. The transgenic donor pigs used were α1,3-galactosyltransferase gene-knockout + membrane cofactor protein (GTKO+CD46) in one recipient and GTKO+CD46+ thrombomodulin (TBM) in the other. RESULTS: The graft survival time for GTKO+CD46 XTP was 28 days. With the addition of TBM, the survival differences between lamellar and full-thickness XTP were 98 days versus 14 days and >463 days (ongoing) versus 21 days, respectively. An excessive number of inflammatory cells was observed in failed grafts, but none were in the recipient's stromal bed. CONCLUSIONS: Unlike full-thickness corneal XTP, lamellar xenocorneal transplantation does not exhibit surgical complications, such as retrocorneal membrane or anterior synechia. The graft survival of lamellar XTP in this study was not as good as in our previous experiments, although the survival period was superior to that of full-thickness XTP. The difference in graft survival based on transgenic type is not definitive. Further studies using transgenic pigs and minimal immunosuppression need to focus on improving graft survival of lamellar XTP and using a larger sample size to determine the potential of full-thickness corneal XTP.


Subject(s)
Corneal Diseases , Corneal Transplantation , Animals , Swine , Transplantation, Heterologous/methods , Graft Survival , Haplorhini , Cornea/surgery , Animals, Genetically Modified , Corneal Transplantation/methods , Corneal Diseases/surgery , Immunosuppression Therapy , Graft Rejection
8.
Transplant Proc ; 55(4): 1043-1047, 2023 May.
Article in English | MEDLINE | ID: mdl-37179178

ABSTRACT

BACKGROUND: In South Korea, pig-to-nonhuman primate trials of solid organs have only been performed recently, and the results are not sufficiently satisfactory to initiate clinical trials. Since November 2011, we have performed 30 kidney pig-to-nonhuman primate xenotransplantations at Konkuk University Hospital. METHODS: Donor αGal-knockout-based transgenic pigs were obtained from 3 institutes. The knock-in genes were CD39, CD46, CD55, CD73, and thrombomodulin, and 2-4 transgenic modifications with GTKO were done. The recipient animal was the cynomolgus monkey. We used the immunosuppressants anti-CD154, rituximab, anti-thymocyte globulin, tacrolimus, mycophenolate mofetil, and steroids. RESULTS: The mean survival duration of the recipients was 39 days. Except for a few cases for which survival durations were <2 days because of technical failure, 24 grafts survived for >7 days, with an average survival duration of 50 days. Long-term survival was observed 115 days after the removal of the contralateral kidney, which is currently the longest-recorded graft survival in Korea. We confirmed functioning grafts for the surviving transplanted kidneys after the second-look operation, and no signs of hyperacute rejection were observed. CONCLUSIONS: Although our survival results are relatively poor, they are the best-recorded results in South Korea, and the ongoing results are improving. With the support of government funds and the volunteering activities of clinical experts, we aim to further improve our experiments and contribute to the commencement of clinical trials of kidney xenotransplantation in Korea.


Subject(s)
Graft Survival , Kidney , Animals , Swine , Transplantation, Heterologous/methods , Macaca fascicularis , Kidney/surgery , Animals, Genetically Modified , Graft Survival/genetics , Republic of Korea , Graft Rejection/genetics , Graft Rejection/prevention & control
9.
Acta Radiol ; 53(3): 270-7, 2012 Apr 01.
Article in English | MEDLINE | ID: mdl-22319133

ABSTRACT

BACKGROUND: Left ventricular (LV) function is a vital parameter for prognosis, therapy guidance, and follow-up of cardiovascular disease. Dual-source computed tomography (DSCT) provides an accurate analysis of global LV function. PURPOSE: To assess the performance of DSCT in the determination of global LV functional parameters in comparison with cardiovascular magnetic resonance (CMR) and two-dimensional transthoracic echocardiography (2D-TTE) in patients with valvular heart disease (VHD). MATERIAL AND METHODS: A total of 111 patients (58 men, mean age 49.9 years) with known VHD and who underwent DSCT, 2D-TTE, and CMR a period of 2 weeks before undergoing valve surgery were included in this study. LV end-systolic volume (ESV), end-diastolic volume (EDV), stroke volume (SV), and ejection fraction (EF) were calculated by DSCT using the threshold-based technique, by 2D-TTE using a modified Simpson's method, and by CMR using Simpson's method. Agreement for parameters of LV global function was determined with the Pearson's correlation coefficient (r) and Bland-Altman analysis. All the DSCT and CMR data-sets were assessed independently by two readers. RESULTS: Fifty of the total 111 patients had aortic VHD, 29 patients had mitral VHD, and 32 patients had mixed aortic and mitral VHD. An excellent inter-observer agreement was seen for the assessment of global LV function using DSCT (r = 0.910-0.983) and CMR (r = 0.854-0.965). An excellent or good correlation (r = 0.93, 0.95, 0.87, and 0.71, respectively, P < 0.001) was noted between the DSCT and 2D-TTE values for EDV, ESV, SV, and EF. EDV (33.7 mL, P < 0.001), ESV (12.1 mL, P < 0.001), SV (21.2 mL, P < 0.001), and EF (1.6%, P = 0.019) were significantly overestimated by DSCT when compared with 2D-TTE. An excellent correlation (r = 0.96, 0.97, 0.91, and 0.94, respectively, P < 0.001) between DSCT and CMR was seen in the evaluation of EDV, ESV, SV, and EF. EDV (15.9 mL, P < 0.001), ESV (7.3 mL, P < 0.001), and SV (8.5 mL, P < 0.001) were significantly underestimated, but EF (1.1%, P = 0.002) was significantly overestimated by DSCT when compared with CMR. CONCLUSION: Our study showed that DSCT measurements of global LV function using the threshold-based technique were highly reproducible and compared more favorably with CMR measurements using Simpson's method than those of 2D-TTE using the modified Simpson's method. DSCT enables accurate quantification of global LV function in patients with VHD.


Subject(s)
Heart Valve Diseases/complications , Tomography, X-Ray Computed/methods , Ventricular Dysfunction, Left/complications , Ventricular Dysfunction, Left/diagnostic imaging , Adult , Aged , Contrast Media , Female , Heart Ventricles/diagnostic imaging , Heart Ventricles/pathology , Humans , Image Processing, Computer-Assisted/methods , Iohexol/analogs & derivatives , Magnetic Resonance Spectroscopy/methods , Male , Middle Aged , Observer Variation , Radiographic Image Enhancement/methods , Reproducibility of Results , Ultrasonography , Ventricular Function, Left , Young Adult
10.
Ann Lab Med ; 42(4): 415-427, 2022 Jul 01.
Article in English | MEDLINE | ID: mdl-35177562

ABSTRACT

BACKGROUND: High-density lipoprotein cholesterol (HDL-C) is a well-known predictor of atherosclerotic cardiovascular diseases (ASCVD). We explored the relationships between HDL-C levels and 10-year major adverse cardiovascular events (MACE) and provided sex-specific upper reference limits for HDL-C levels. METHODS: Based on the Korean National Health Insurance Sharing Service, we identified 5,703,897 subjects (women, 48%) with age ≥40 years, eligible HDL-C results, and no prior ASCVD in 2009. We investigated the distribution of 10-year MACE according to HDL-C levels in 10 mg/dL (0.26 mmol/L) intervals and in three HDL-C groups (low: men <40 mg/dL [1.03 mmol/L], women <50 mg/dL [1.29 mmol/L]; high: between low and extremely high levels; and extremely high: >90 mg/dL [2.33 mmol/L]). RESULTS: There were U-shaped relationships between HDL-C levels and 10-year MACE with later inflection in women than in men (nadir: 80-99 mg/dL [2.07-2.56 mmol/L] and 50-59 mg/dL [1.29-1.53 mmol/L], respectively). In men, the extremely high HDL-C group showed significantly higher 10-year MACE than the high group (28.1% vs. 24.6%, P< 0.0001). In women, the extremely high group showed the lowest 10-year MACE; if the extremely high starting point was raised to 130 mg/dL, it became similar to that in men and showed higher 10-year MACE than the high group (25.6% vs. 20.1%, P<0.0001). CONCLUSIONS: The 10-year MACE showed U-shaped relationships with HDL-C levels, and extremely high HDL-C level at 90 mg/dL (2.33 mmol/L) in men was corresponding in risk to 130 mg/dL (3.36 mmol/L) in women.


Subject(s)
Cardiovascular Diseases , Adult , Cardiovascular Diseases/diagnosis , Cholesterol, HDL , Cohort Studies , Female , Humans , Male , Republic of Korea , Risk Factors , Triglycerides
11.
Metabolites ; 12(11)2022 Nov 09.
Article in English | MEDLINE | ID: mdl-36355169

ABSTRACT

Adiponectin and high-density lipoprotein cholesterol (HDL-C) are negative predictors for cardio-metabolic disorders. This study explored adiponectin's role in predicting multiple metabolic syndrome components (multi-MetSC) in subjects with extremely high HDL-C levels overall and by sex. We enrolled adults with extremely high HDL-C levels (≥90 mg/dL) in general health checkups and compared adiponectin levels in subjects with and without multi-MetSC. Among 274 subjects (median 44 years, female 79.6%), 19 (6.9%) had a multi-MetSC. The adiponectin level was significantly lower in subjects with multi-MetSC than without (females: 9.2 [6.2-13.3] vs. 12.0 [9.7-15.9] µg/mL, p = 0.039; males: 6.9 ± 2.4 vs. 10.0 ± 5.2 µg/mL, p = 0.013). The optimal cutoff values to predict multi-MetSC were 9.7 µg/mL (sensitivity 64%, specificity 74%) in females and 9.6 µg/mL (sensitivity 100%, specificity 44%) in males. Compared with the high adiponectin group, the low group revealed higher fasting glucose in females and higher waist circumference, visceral fat area, and HDL-C levels in males. Multiple logistic regression analysis confirmed adiponectin as an independent predictor of multi-MetSC (OR 0.85, 95% CI 0.71-0.97). Adiponectin could be a potential biomarker for multi-MetSC in general health checkup subjects with extremely high HDL-C levels. There were sex differences in the metabolic risk factors between low and high adiponectin groups.

12.
Eur J Cardiothorac Surg ; 62(5)2022 10 04.
Article in English | MEDLINE | ID: mdl-36149285

ABSTRACT

We report the case of successful biventricular repair after left ventricular rehabilitation in an infant with transposition of the great arteries with an intact ventricular septum, pulmonary stenosis, a large atrial septal defect and a borderline small left ventricle (mitral annulus z-score: -3.6). This baby presented to us at 2 months of age after having a modified Blalock-Taussig shunt at another hospital. We restricted the atrial septal defect with the child on cardiopulmonary bypass. Ten weeks later, the mitral annulus z-score increased to -1.5, and the transpulmonary peak pressure gradient increased to 87 mmHg. Subsequently, we performed the aortic root translocation. The patient is currently an active 4-year-old boy.


Subject(s)
Heart Septal Defects, Atrial , Pulmonary Valve Stenosis , Transposition of Great Vessels , Ventricular Septum , Arteries , Child , Child, Preschool , Heart Septal Defects, Atrial/surgery , Heart Ventricles/diagnostic imaging , Heart Ventricles/surgery , Humans , Infant , Male , Pulmonary Valve Stenosis/diagnostic imaging , Pulmonary Valve Stenosis/surgery , Transposition of Great Vessels/diagnostic imaging , Transposition of Great Vessels/surgery
13.
Ann Lab Med ; 42(2): 178-187, 2022 03 01.
Article in English | MEDLINE | ID: mdl-34635611

ABSTRACT

Background: Urine tissue inhibitor of metalloproteinases-2/insulin-like growth factor-binding protein 7 (TIMP-2/IGFBP7) (NephroCheck, Ortho Clinical Diagnostics, Raritan, NJ, USA) is a US Food and Drug Administration-approved biomarker for risk assessment of acute kidney injury (AKI) in critically ill adult patients in intensive care units; however, its clinical impact in the emergency department (ED) remains unproven. We evaluated the utility of NephroCheck for predicting AKI development and short-term mortality in the ED. Methods: This was a prospective, observational, five-center international study. We consecutively enrolled ED patients admitted with ≥30% risk of AKI development (assessed by ED physician: ED score) or acute diseases. Serum creatinine was tested on ED arrival (T0), day 1, and day 2 (T48); urine for NephroCheck was collected at T0 and T48. We performed ROC curve and reclassification analyses. Results: Among the 529 patients enrolled (213 females; median age, 65 years), AKI developed in 59 (11.2%) patients. The T0 NephroCheck value was higher in the AKI group than in the non-AKI group (median 0.77 vs. 0.29 (ng/m)2/1,000, P=0.001), and better predicted AKI development than the ED score (area under the curve [AUC], 0.64 vs. 0.53; P=0.04). In reclassification analyses, adding NephroCheck to the ED score improved the prediction of AKI development (P<0.05). The T0 NephroCheck value predicted 30-day mortality (AUC, 0.68; P<0.001). Conclusions: NephroCheck can predict both AKI development and short-term mortality in at-risk ED patients. NephroCheck would be a useful biomarker for early ruling-in or ruling-out of AKI in the ED.


Subject(s)
Acute Kidney Injury , Insulin-Like Growth Factor Binding Proteins/urine , Tissue Inhibitor of Metalloproteinase-2 , Acute Disease , Acute Kidney Injury/diagnosis , Aged , Biomarkers , Emergency Service, Hospital , Female , Humans , Male , Prospective Studies , Tissue Inhibitor of Metalloproteinase-2/urine , United States
14.
Eur J Echocardiogr ; 12(4): 322-5, 2011 Apr.
Article in English | MEDLINE | ID: mdl-21414955

ABSTRACT

AIM: To study the effect of positional change on inferior vena cava (IVC) diameter. The influence of positional change on IVC size is not well studied. Although the American Society of Echocardiography guidelines for chamber quantification recommend imaging the IVC in the left lateral position, many labs routinely image the IVC from the supine position. METHODS AND RESULTS: Forty-three patients (age 39.5 ± 9.4) with normal echocardiographic findings were studied. Subcostal imaging was used to assess the IVC in the supine and left lateral positions. IVC dimensions, hepatic vein (HV) Doppler and tricuspid regurgitation (TR) jet velocity were measured. IVC systolic and diastolic dimensions were larger in the supine compared with the left lateral position (17.2 ± 4.1 vs. 10.9 ± 4.4 mm, P < 0.001; 16.2 ± 4.5 vs. 9.9 ± 4.4 mm, P < 0.001, respectively). Position had no influence on HV systolic and diastolic peak velocity. (35.4 ± 23.7 vs. 31.8 ± 35.0 cm/s, P = 0.461; 24.2 ± 19.5 vs. 25.4 ± 31.9 cm/s, P = 0.775, respectively). CONCLUSIONS: The IVC dimension is larger in the supine position independent of the cardiac cycle. This may be due to increased intra-abdominal pressure and compression of the IVC by the liver in the left lateral position. HV systolic and diastolic peak Doppler velocities were not influenced by position.


Subject(s)
Patient Positioning , Vena Cava, Inferior/diagnostic imaging , Adult , Diastole/physiology , Echocardiography , Female , Hepatic Veins/diagnostic imaging , Humans , Male , Systole/physiology
15.
Sci Rep ; 11(1): 8588, 2021 04 21.
Article in English | MEDLINE | ID: mdl-33883587

ABSTRACT

This nationwide population-based cohort study aimed to investigate the impact of systemic anti-inflammatory treatment on the major adverse cardiovascular events (MACE) risk in patients with psoriasis from January 2006 to December 2018, using a database provided by the Korean National Health Insurance Service. Patients were grouped based on the following treatment modalities: biologics, phototherapy, methotrexate, cyclosporine, and mixed conventional systemic agents. Patients who had not received any systemic treatment were assigned to the control cohort. The incidence of MACE per 1000 person-year was 3.5, 9.3, 12.1, 28.4, 39.5, and 14.5 in the biologic, phototherapy, methotrexate, cyclosporine, mixed conventional systemic agents, and control cohorts, respectively. During the 36-month follow-up, the cumulative incidence of MACE in the phototherapy and biologic cohorts remained lower than that of other treatment modalities. Cyclosporine (hazard ratio (HR) = 2.11, 95% confidence interval (CI) = 1.64-2.71) and mixed conventional systemic agents (HR = 2.57, 95% CI = 2.05-3.22) treatments were associated with increased MACE risk. Methotrexate treatment was not associated with MACE. Our finding demonstrates that treatment modalities may affect cardiovascular comorbidities in patients with psoriasis. Thus, an appropriate combination of anti-psoriatic therapies should be considered to manage patients with high cardiovascular risk.IRB approval status: Waiver decision was obtained by the institutional review board, Konkuk University Hospital, Seoul, Republic of Korea (KUH1120107).


Subject(s)
Anti-Inflammatory Agents/therapeutic use , Cardiovascular Diseases/epidemiology , Psoriasis/drug therapy , Acitretin/therapeutic use , Adult , Aged , Cyclosporine/therapeutic use , Female , Humans , Incidence , Male , Methotrexate/therapeutic use , Middle Aged , Phototherapy , Proportional Hazards Models , Republic of Korea/epidemiology , Severity of Illness Index , Young Adult
16.
Nat Microbiol ; 6(3): 277-288, 2021 03.
Article in English | MEDLINE | ID: mdl-33432149

ABSTRACT

The gut microbiome can influence the development of tumours and the efficacy of cancer therapeutics1-5; however, the multi-omics characteristics of antitumour bacterial strains have not been fully elucidated. In this study, we integrated metagenomics, genomics and transcriptomics of bacteria, and analyses of mouse intestinal transcriptome and serum metabolome data to reveal an additional mechanism by which bacteria determine the efficacy of cancer therapeutics. In gut microbiome analyses of 96 samples from patients with non-small-cell lung cancer, Bifidobacterium bifidum was abundant in patients responsive to therapy. However, when we treated syngeneic mouse tumours with commercial strains of B. bifidum to establish relevance for potential therapeutic uses, only specific B. bifidum strains reduced tumour burden synergistically with PD-1 blockade or oxaliplatin treatment by eliciting an antitumour host immune response. In mice, these strains induced tuning of the immunological background by potentiating the production of interferon-γ, probably through the enhanced biosynthesis of immune-stimulating molecules and metabolites.


Subject(s)
Bifidobacterium bifidum/physiology , Immune Checkpoint Inhibitors/therapeutic use , Probiotics/therapeutic use , Tumor Burden/drug effects , Animals , Bifidobacterium bifidum/classification , Bifidobacterium bifidum/genetics , Carcinoma, Non-Small-Cell Lung/drug therapy , Carcinoma, Non-Small-Cell Lung/microbiology , Carcinoma, Non-Small-Cell Lung/pathology , Drug Therapy, Combination , Gastrointestinal Microbiome , Humans , Interferon-gamma/genetics , Interferon-gamma/metabolism , Lung Neoplasms/drug therapy , Lung Neoplasms/microbiology , Lung Neoplasms/pathology , Metabolome/drug effects , Mice , Neoplasms, Experimental/drug therapy , Neoplasms, Experimental/pathology , Probiotics/administration & dosage , Species Specificity , Transcriptome/drug effects , Tryptophan/metabolism
17.
Eur J Echocardiogr ; 11(2): 157-64, 2010 Mar.
Article in English | MEDLINE | ID: mdl-19946117

ABSTRACT

AIMS: This study tested the feasibility of velocity vector imaging (VVI) analysis to quantitatively assess right ventricular (RV) function during stress echocardiography (SE). METHODS AND RESULTS: We prospectively enrolled 73 patients (treadmill 38, dobutamine 35) undergoing SE using an Acuson C512 ultrasound system. The RV ejection fraction was measured for global RV function. The radial velocity, circumferential strain, and strain rate (SR) of four segments from the mid-level RV short-axis view, and the longitudinal velocity, strain, and SR of six segments from the RV apical four-chamber view were used to evaluate regional RV function. The VVI analysis successfully in 70 of 73 cases (96%). Fifty (71%) of the 70 demonstrated a normal response to stress, showing an increased RV ejection fraction (P < 0.001), and longitudinal velocity and SR in the basal lateral walls at peak stress (7.7 +/- 2.0-10.3 +/- 2.9 cm/s, -1.9 +/- 0.7 to -3.2 +/- 1.4/s, P < 0.001); the longitudinal displacement and strain of the same segment did not show a significant increase. CONCLUSION: Quantitative assessment of global and regional RV function during SE was feasible using VVI analysis. Longitudinal velocity and SR of the RV basal lateral wall were significantly better than longitudinal displacement or strain for detecting RV response during SE.


Subject(s)
Echocardiography, Stress , Stroke Volume , Ventricular Function, Left , Ventricular Function, Right , Algorithms , Exercise Test , Feasibility Studies , Female , Heart Ventricles/diagnostic imaging , Heart Ventricles/pathology , Humans , Linear Models , Male , Middle Aged , Multivariate Analysis , Prospective Studies , Statistics as Topic
18.
Echocardiography ; 27(10): E125-7, 2010 Nov.
Article in English | MEDLINE | ID: mdl-20553319

ABSTRACT

Echocardiography-guided pericardiocentesis is relatively safe with minimal risk in experienced hands. However, complications can occur because of the procedure. This report describes a unique case of an 84-year-old man with unanticipated fatal pulmonary thromboembolism following a successful pericardiocentesis.


Subject(s)
Pericardiocentesis/adverse effects , Pulmonary Embolism/diagnostic imaging , Pulmonary Embolism/etiology , Aged, 80 and over , Fatal Outcome , Humans , Male , Pulmonary Embolism/prevention & control , Ultrasonography
19.
Indian J Thorac Cardiovasc Surg ; 36(Suppl 1): 140-153, 2020 Jan.
Article in English | MEDLINE | ID: mdl-33061195

ABSTRACT

Peri-operative echocardiography is widely used because it provides information that significantly influences clinical/surgical management and improves outcome in patients undergoing cardiac surgery. The role of intra-operative trans-esophageal echocardiography (TEE) in valvular heart disease cannot be emphasized enough. Increasing use of newer surgical techniques-valve repairs and minimal invasive cardiac surgery also warrants intra-operative TEE. It gives us better insight into the anatomy and physiology of the valvular lesion by digital imaging. This manuscript provides an illustrative case based overview of intra operative TEE (IOTEE) in heart valve surgery.

20.
Ann Lab Med ; 40(4): 297-305, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32067428

ABSTRACT

BACKGROUND: High-density lipoprotein cholesterol (HDL-C) is a complex mixture of subclasses with heterogeneous atheroprotective activities. We analyzed HDL-C subclass in relation to cardiovascular risk and metabolic syndrome (MetS) in a population with high HDL-C levels. METHODS: A total of 300 Korean individuals with high HDL-C levels (≥2.331 mmol/L) were enrolled following a comprehensive general medical examination including body composition analysis. HDL3-C levels were measured using the HDL3-EX SEIKEN kit (Randox Ltd., Crumlin, UK) and non-HDL3-C levels were calculated by subtracting HDL3-C levels from total HDL-C levels. RESULTS: HDL3-C levels and HDL3-C proportion had a weak positive correlation with low-density lipoprotein cholesterol (LDL-C) and triglycerides (r=0.21, r=0.25; r=0.26, r=0.34, respectively, all P<0.001); in contrast, non-HDL3-C levels had a weak negative correlation with these parameters (r=-0.17 and r=-0.25, respectively, both P<0.005). HDL3-C levels and HDL3-C proportion were significantly higher in the MetS group (N=8) than in the non-MetS group (0.71 vs 0.63 mmol/L, P=0.001; 29.7 vs 25.8%, P=0.001, respectively); these were the only predictors of MetS among the lipid variables (areas under the curves [AUC]=0.84 and 0.83, respectively, both P=0.001). CONCLUSIONS: In populations with high HDL-C levels, HDL-C subclass may provide a greater amount of information on cardiovascular risk and MetS than HDL-C levels alone.


Subject(s)
Cholesterol, HDL/chemistry , Metabolic Syndrome/diagnosis , Adult , Area Under Curve , Body Composition , Cholesterol, HDL/blood , Cholesterol, LDL/blood , Cross-Sectional Studies , Female , Humans , Male , Metabolic Syndrome/metabolism , Middle Aged , ROC Curve , Reagent Kits, Diagnostic , Republic of Korea , Triglycerides/blood
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