1.De Novo Light Chain Deposition Disease in Long-term Survived Renal Allograft.
Misun CHOE ; Mihyun JANG ; Eunah HWANG ; Sang Sook LEE ; Hyunchul KIM
Korean Journal of Nephrology 2010;29(4):539-543
Light chain deposition disease (LCDD) is characterized by the deposition of abnormal immunoglobulin light chains in many organs, including kidney. It is usually associated with multiple myeloma or other lymphoproliferative disorders. Myeloma usually occurs in old age and may develop after renal transplantation thus being categorized as posttransplant lymphoproliferative disease (PTLD). Renal LCDD usually presents with variable degree of proteinuria and renal insufficiency. The diagnosis of LCDD depends on histologic findings with detection of monoclonal immunoglobulin light chain. Histologically, it is characterized by nodular glomerulosclerosis. We report the first case of de novo LCDD associated with myeloma after renal transplantation in Korea. With advancing renal transplantation and increasing old aged renal recipients, myeloma or LCDD should be included in the differential diagnoses of renal recipient patients with deteriorating renal function.
Aged
;
Diabetic Nephropathies
;
Diagnosis, Differential
;
Humans
;
Immunoglobulin Light Chains
;
Kidney
;
Kidney Transplantation
;
Korea
;
Light
;
Lymphoproliferative Disorders
;
Multiple Myeloma
;
Proteinuria
;
Renal Insufficiency
;
Transplantation, Homologous
2.Two Cases of Leiomyoma of the Vulva which Displaced Urethra.
Ilsoo KIM ; Chansoo JANG ; Hyunchul WON ; Sungjoo HONG ; Minsung LEE
Korean Journal of Urology 1986;27(1):200-202
Leiomyoma of the vulva is rare neoplasm. It is usually located in the labium majors and in the area of the Batholin gland. We experienced two cases of leiomyoma around urethral meatus which displaced urethra. So we report cases with review of literature.
Leiomyoma*
;
Urethra*
;
Vulva*
3.Clinicopathological Analysis of Hepatocellular Adenoma According to New Bordeaux Classification: Report of Eight Korean Cases.
Hyunchul KIM ; Ja June JANG ; Dong Sik KIM ; Beom Woo YEOM ; Nam Hee WON
Korean Journal of Pathology 2013;47(5):411-417
BACKGROUND: Hepatocellular adenoma (HCA) is a rare benign tumor of the liver. A subtype classification of HCA (hepatocyte nuclear factor 1alpha [HNF1alpha]-mutated, beta-catenin-mutated HCA, inflammatory HCA, and unclassified HCA) has recently been established based on a single institutional review of a HCA series by the Bordeaux group. METHODS: We used histologic and immunohistochemical parameters to classify and evaluate eight cases from our institution. We evaluated the new classification method and analyzed correlations between our results and those of other reports. RESULTS: Seven of our eight cases showed histologic and immunohistochemical results consistent with previous reports. However, one case showed overlapping histologic features, as previously described by the Bordeaux group. Four cases showed glutamine synthetase immunohistochemical staining inconsistent with their classification, indicating that glutamine synthetase staining may not be diagnostic for beta-catenin-mutated HCA. HNF1alpha-mutated HCA may be indicated by the absence of liver fatty acid binding protein expression. Detection of amyloid A may indicate inflammatory HCA. HCA with no mutation in the HNF1alpha or beta-catenin genes and no inflammatory protein expression is categorized as unclassified HCA. CONCLUSIONS: Although the new classification is now generally accepted, validation through follow-up studies is necessary.
Adenoma, Liver Cell*
;
Amyloid
;
beta Catenin
;
Fatty Acid-Binding Proteins
;
Glutamate-Ammonia Ligase
;
Hepatocyte Nuclear Factor 1-alpha
;
Liver
;
Serum Amyloid A Protein
4.Efficacy of Mycophenolate Mofetil in the Treatment of Refractory Membranous Nephropathy and Focal Segmental Glomerulosclerosis.
Mihyun JANG ; Eunah HWANG ; Sangmok YEOU ; Choonghwan KWAK ; Seungyeup HAN ; Sungbae PARK ; Hyunchul KIM ; Misun CHOE
Korean Journal of Nephrology 2010;29(6):708-715
PURPOSE: This study was planned to determine the efficacy and safety of mycophenolate mofetil (MMF) as a rescue treatment in patients with membranous nephropathy (MN) and focal segmental glomerulosclerosis (FSGS) who were not responsive to standard therapy with steroid and immunosuppressive regimen. METHODS: We planned a prospective, non-randomized study from Oct. 2002 to Aug. 2009, including biopsy-proven MN or FSGS patients in Keimyung university Dongsan hospital. MMF was initiated at 0.5-0.75 g twice daily, and advanced as appropriate or as tolerated to 0.75-1 g twice daily. RESULTS: 14 cases with MN and 5 cases with FSGS was enrolled. The mean age of patients was 51.7+/-12.3 years, and mean treatment duration was 14.4+/-6.5 months. Five patients (26.4%) went into complete remission and the seven (36.8%) into partial remission. The mean value of 24hr total urine protein over the follow-up 6 months' period declined significantly from 7.6+/-6.2 g in pre-treatment, to 4.1+/-3.2 g in 3 months, and 3.1+/-2.1 g in 6 months (p=0.011). The mean 24hr total urine protein decreased from 7.5+/-6.3 g in pre-MMF to 1.9+/-1.8 g in post-MMF (p=0.001). The mean serum albumin rose from 3.2+/-0.8 g/dL in pre-MMF to 3.9+/-0.5 g/dL in post-MMF (p=0.001). There were no significant changes in mean value for WBC, hemoglobin, serum creatinine, and total cholesterol. Side effects of MMF were infrequent and generally mild. CONCLUSION: MMF appears effective in 63% of patients with MN and FSGS who are resistant to other forms of treatment. Studies with more cases and multicenter controlled trials are required to establish the role and standards of MMF in these disorders.
Cholesterol
;
Creatinine
;
Follow-Up Studies
;
Glomerulonephritis, Membranous
;
Glomerulosclerosis, Focal Segmental
;
Hemoglobins
;
Humans
;
Mycophenolic Acid
;
Prospective Studies
;
Serum Albumin
5.Late Spontaneous Subcapsular Hematoma in an Allograft Kidney.
Go CHOI ; Eunah HWANG ; Mihyun JANG ; Seungyeup HAN ; Sungbae PARK ; Hyunchul KIM ; Seehyung KIM
The Journal of the Korean Society for Transplantation 2010;24(3):210-213
A spontaneous subcapsular hematoma in an allograft kidney is a rare condition with only a few cases reported in the literature. Common causes of subcapsular hematoma of an allograft include trauma, post-biopsy status, occult malignancy, vascular diseases, and infection. Chronic allograft dysfunction related to spontaneous subcapsular hematoma is extremely rare. We report a case of spontaneous subcapsular hematoma in a patient who underwent a renal transplant 14 years ago in which we could not find an associated condition.
Hematoma
;
Humans
;
Kidney
;
Transplantation, Homologous
;
Transplants
;
Vascular Diseases
6.The Changes of Graft Survival and Causes of Graft Failure after Kidney Transplantation.
Eunah HWANG ; Mihyun JANG ; Chunghwan KWAK ; Seungyeup HAN ; Sungbae PARK ; Hyunchul KIM ; Hyoungtae KIM ; Wonhyun CHO
The Journal of the Korean Society for Transplantation 2011;25(1):22-30
BACKGROUND: The incidence of acute rejection has decreased with the introduction of new immunosuppressive agents. However, several studies have shown that allograft survival has not clearly improved over the past few decades. METHODS: We reviewed patients who underwent kidney transplantation between 1982 and 2007. We compared the causes of graft loss for three decades: 1982~1990 (period I),1991~2000 (period II), and 2001~2007 (period III), with the clinical characteristics of patients with functioning grafts and patients who lost their allografts. RESULTS: There were 785 recipients with a mean age of 36.1 years, and 65.2% were male. Graft loss occurred in 329 patients (41.9%), and the most common cause of graft loss was chronic allograft nephropathy (CAN, 52.0%), followed by patient death (17.6%), post-transplant glomerulonephritis (12.8%), and non compliance (7.9%). During the three time periods, 129, 172, and 28 patients lost their grafts, respectively. Five-year graft survival was 61.5%, 78.4%, and 90.8%, respectively, and increased significantly (P<0.000). CAN, as a cause of graft loss, fell from 65.1% (period I) to 32.1% (period III, P<0.000), but patient death increased from 12.4% to 32.1% (P=0.034). A multivariate analysis revealed that significant risk factors for graft loss included an older donor, transplantation at period I, and dual immunosuppression. Use of tacrolimus and mycophenolate mofetil was associated with a significantly reduced risk of graft loss. CONCLUSIONS: Graft survival has increased over the last three decades whereas the proportion of CAN, the most common cause of graft loss, has decreased. Attention to the main causes of graft loss, CAN, and patient death will offer potential improvement in graft survival.
Compliance
;
Glomerulonephritis
;
Graft Rejection
;
Graft Survival
;
Humans
;
Immunosuppression
;
Immunosuppressive Agents
;
Incidence
;
Kidney
;
Kidney Transplantation
;
Male
;
Multivariate Analysis
;
Mycophenolic Acid
;
Rejection (Psychology)
;
Risk Factors
;
Tacrolimus
;
Time Factors
;
Tissue Donors
;
Transplantation, Homologous
;
Transplants
;
Treatment Outcome
7.A mathematical model for the deficiency-excess mechanism of yin-yang in five viscera.
Jinhyun KIM ; Miyoung SONG ; Jungim KANG ; Sang-Kyun KIM ; Changseok KIM ; Hyunchul JANG ; Sang-Hee LEE
Chinese journal of integrative medicine 2014;20(2):155-160
To raise traditional medicine to a higher level of scientific research, a mathematical model has been proposed using symbolic notations and operators to describe several disease symptoms generally recognized in traditional medicine. Even though this model to a certain degree offers a mathematical approach to identify the relationships between yin-yang and the five viscera, it is not an efficient means of explaining the pathology in traditional medicine due to its use of superfluous notations and definitions. In this paper, we introduce two concise operators, a self-development operator and an action operator: the former describes the effect of a viscus in the unbalanced state on other viscera: the latter explains the engendering and restraining relationships between the two viscera. These tools are useful to elucidate the interactions among the states of the five viscera based on yin-yang and the five elements theory. Our mathematical model with these two operators facilitates description for the scheme of deficiency-excess of yin-yang in the five viscera. Accordingly, we have mathematically refined the existing results and shown clinical applications as well.
Heart
;
physiopathology
;
Humans
;
Liver
;
pathology
;
Lung
;
pathology
;
Models, Theoretical
;
Viscera
;
pathology
;
Yin-Yang
8.Changes in Gene Expression of the Extracellular Matrix in Patients with Full-Thickness Rotator Cuff Tears of Varying Sizes
Jian JIANG ; Kwi-Hoon JANG ; Sung Yong AHN ; Chris Hyunchul JO
Clinics in Orthopedic Surgery 2025;17(1):138-147
Background:
This study aimed to investigate changes in gene expression related to matrix synthesis in individuals with fullthickness rotator cuff tears (RCTs) and normal tendon tissues. The study also aimed to examine the differences in gene expression according to 4 distinct tear sizes.
Methods:
A total of 12 patients with full-thickness RCTs were included in the study, all of whom underwent arthroscopic rotator cuff repair. The RCTs were stratified by size into small, medium, large, and massive. Tendon samples were harvested from the midpoint between the lateral end of the torn tendon and the musculotendinous junction. Subsequent analysis of the tissue samples revealed the mRNA expression levels of 11 collagen types, 6 proteoglycans, and 8 glycoproteins through real-time polymerase chain reaction techniques. For control purposes, supraspinatus tendon tissue was sourced from 3 patients who had proximal humerus fractures but did not present with RCTs.
Results:
Among the 11 collagens and 14 non-collagenous protein (NCP) genes examined in this study, COL3A1 and COL10A1 showed a significant increase, whereas COL4A1 and COL14A1 showed a tendency to decrease compared to those in the normal group. ACAN significantly increased by 8.92-fold (p < 0.001) compared to that in the normal group, whereas DCN and LUM showed a tendency to decrease. FN1 and TNC increased significantly by 3.47-fold (p = 0.003) and 5.38-fold (p = 0.005), respectively, and the genes ELN, LAMA2, and THBS1 were all significantly reduced compared to those in the normal group. In the NCPs, almost all the genes with increased expression levels had the highest level in small size RCTs, and gene expression decreased as the size increased. The 3 proteoglycans (ACAN, BGN, and FMOD) showed the highest levels of expression in small size RCTs compared to those in the normal group, and 5 glycoproteins (COMP, FBN1, FN1, HAPLN1, and TNC) also showed the highest expression in small size RCTs.
Conclusions
We confirmed that most of the detected extracellular matrix gene expression changes were related to the size of the full-thickness RCTs. In NCPs, gene expression was increased in small-size tears, and gene expression levels were significantly reduced when the size increased.
9.Changes in Gene Expression of the Extracellular Matrix in Patients with Full-Thickness Rotator Cuff Tears of Varying Sizes
Jian JIANG ; Kwi-Hoon JANG ; Sung Yong AHN ; Chris Hyunchul JO
Clinics in Orthopedic Surgery 2025;17(1):138-147
Background:
This study aimed to investigate changes in gene expression related to matrix synthesis in individuals with fullthickness rotator cuff tears (RCTs) and normal tendon tissues. The study also aimed to examine the differences in gene expression according to 4 distinct tear sizes.
Methods:
A total of 12 patients with full-thickness RCTs were included in the study, all of whom underwent arthroscopic rotator cuff repair. The RCTs were stratified by size into small, medium, large, and massive. Tendon samples were harvested from the midpoint between the lateral end of the torn tendon and the musculotendinous junction. Subsequent analysis of the tissue samples revealed the mRNA expression levels of 11 collagen types, 6 proteoglycans, and 8 glycoproteins through real-time polymerase chain reaction techniques. For control purposes, supraspinatus tendon tissue was sourced from 3 patients who had proximal humerus fractures but did not present with RCTs.
Results:
Among the 11 collagens and 14 non-collagenous protein (NCP) genes examined in this study, COL3A1 and COL10A1 showed a significant increase, whereas COL4A1 and COL14A1 showed a tendency to decrease compared to those in the normal group. ACAN significantly increased by 8.92-fold (p < 0.001) compared to that in the normal group, whereas DCN and LUM showed a tendency to decrease. FN1 and TNC increased significantly by 3.47-fold (p = 0.003) and 5.38-fold (p = 0.005), respectively, and the genes ELN, LAMA2, and THBS1 were all significantly reduced compared to those in the normal group. In the NCPs, almost all the genes with increased expression levels had the highest level in small size RCTs, and gene expression decreased as the size increased. The 3 proteoglycans (ACAN, BGN, and FMOD) showed the highest levels of expression in small size RCTs compared to those in the normal group, and 5 glycoproteins (COMP, FBN1, FN1, HAPLN1, and TNC) also showed the highest expression in small size RCTs.
Conclusions
We confirmed that most of the detected extracellular matrix gene expression changes were related to the size of the full-thickness RCTs. In NCPs, gene expression was increased in small-size tears, and gene expression levels were significantly reduced when the size increased.
10.Changes in Gene Expression of the Extracellular Matrix in Patients with Full-Thickness Rotator Cuff Tears of Varying Sizes
Jian JIANG ; Kwi-Hoon JANG ; Sung Yong AHN ; Chris Hyunchul JO
Clinics in Orthopedic Surgery 2025;17(1):138-147
Background:
This study aimed to investigate changes in gene expression related to matrix synthesis in individuals with fullthickness rotator cuff tears (RCTs) and normal tendon tissues. The study also aimed to examine the differences in gene expression according to 4 distinct tear sizes.
Methods:
A total of 12 patients with full-thickness RCTs were included in the study, all of whom underwent arthroscopic rotator cuff repair. The RCTs were stratified by size into small, medium, large, and massive. Tendon samples were harvested from the midpoint between the lateral end of the torn tendon and the musculotendinous junction. Subsequent analysis of the tissue samples revealed the mRNA expression levels of 11 collagen types, 6 proteoglycans, and 8 glycoproteins through real-time polymerase chain reaction techniques. For control purposes, supraspinatus tendon tissue was sourced from 3 patients who had proximal humerus fractures but did not present with RCTs.
Results:
Among the 11 collagens and 14 non-collagenous protein (NCP) genes examined in this study, COL3A1 and COL10A1 showed a significant increase, whereas COL4A1 and COL14A1 showed a tendency to decrease compared to those in the normal group. ACAN significantly increased by 8.92-fold (p < 0.001) compared to that in the normal group, whereas DCN and LUM showed a tendency to decrease. FN1 and TNC increased significantly by 3.47-fold (p = 0.003) and 5.38-fold (p = 0.005), respectively, and the genes ELN, LAMA2, and THBS1 were all significantly reduced compared to those in the normal group. In the NCPs, almost all the genes with increased expression levels had the highest level in small size RCTs, and gene expression decreased as the size increased. The 3 proteoglycans (ACAN, BGN, and FMOD) showed the highest levels of expression in small size RCTs compared to those in the normal group, and 5 glycoproteins (COMP, FBN1, FN1, HAPLN1, and TNC) also showed the highest expression in small size RCTs.
Conclusions
We confirmed that most of the detected extracellular matrix gene expression changes were related to the size of the full-thickness RCTs. In NCPs, gene expression was increased in small-size tears, and gene expression levels were significantly reduced when the size increased.