This study investigated the toxicity of commercial non-steroid anti-inflammatory drug (NSAID) eye solutions against corneal epithelial cells in vitro. The biologic effects of 1/100-, 1/50-, and 1/10-diluted bromfenac sodium, pranoprofen, diclofenac sodium, and the fluorometholone on corneal epithelial cells were evaluated after 1-, 4-, 12-, and 24-hr of exposure compared to corneal epithelial cell treated with balanced salt solution as control. Cellular metabolic activity, cellular damage, and morphology were assessed. Corneal epithelial cell migration was quantified by the scratch-wound assay. Compared to bromfenac and pranoprofen, the cellular metabolic activity of diclofenac and fluorometholone significantly decreased after 12-hr exposure, which was maintained for 24-hr compared to control. Especially, at 1/10-diluted eye solution for 24-hr exposure, the LDH titers of fluorometholone and diclofenac sodium markedly increased more than those of bromfenac and pranoprofen. In diclofenac sodium, the Na+ concentration was lower and amount of preservatives was higher than other NSAIDs eye solutions tested. However, the K+ and Cl- concentration, pH, and osmolarity were similar for all NSAIDs eye solutions. Bromfenac and pranoprofen significantly promoted cell migration, and restored wound gap after 48-hr exposure, compared with that of diclofenac or fluorometholone. At 1/50-diluted eye solution for 48-hr exposure, the corneal epithelial cellular morphology of diclofenac and fluorometholone induced more damage than that of bromfenac or pranoprofen. Overall, the corneal epithelial cells in bromfenac and pranoprofen NSAID eye solutions are less damaged compared to those in diclofenac, included fluorometholone as steroid eye solution.
Anti-Inflammatory Agents, Non-Steroidal/administration & dosage/*toxicity ; Benzophenones/administration & dosage/toxicity ; Benzopyrans/administration & dosage/toxicity ; Bromobenzenes/administration & dosage/toxicity ; Cell Movement/drug effects ; Cells, Cultured ; Diclofenac/administration & dosage/toxicity ; Epithelial Cells/drug effects/metabolism/ultrastructure ; Epithelium, Corneal/cytology/*drug effects/metabolism ; Fluorometholone/administration & dosage/toxicity ; Humans ; L-Lactate Dehydrogenase/metabolism ; Microscopy, Electron, Transmission ; Ophthalmic Solutions ; Propionates/administration & dosage/toxicity

BACKGROUND: The combination of tenofovir disoproxil fumarate (TDF) and emtricitabine (FTC) has been the first choice nucleoside reverse transcriptase inhibitor (NRTI) according to many reliable antiretroviral treatment (ART) guidelines because of its high efficacy. However, TDF-related renal toxicity reported in Western countries is a challenging issue regarding clinical use. We conducted this study to evaluate the incidence and characteristics of an acute increase in serum creatinine (Cr) level > 1.5 mg/dL among TDF/FTC-based highly active antiretroviral treatment (HAART)-treated patients. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 205 HIV-infected patients treated with TDF/FTC-containing regimens between 1 February 2010 and 30 April 2014. Three groups of TDF/FTC + ritonavir-boosted protease inhibitor (PI/r), TDF/FTC + non-nucleoside reverse transcriptase inhibitor (NNRTI), and TDF/FTC + integrase strand transfer inhibitor (INSTI), and three PI/r subgroups of TDF/FTC + lopinavir (LPV)/r, TDF/FTC + atazanavir (ATV)/r, TDF/FTC + darunavir (DRV)/r were evaluated. RESULTS: A total 136 patients (91 in the TDF/FTC + PI/r group, 20 in the TDF/FTC + NNRTI group and 25 in the TDF/FTC + INSTI group) were included in the statistical analysis. Four cases (4.9%; all in the TDF/FTC + PI/r group) among 136 patients showed an acute increase in serum Cr more than 1.5 mg/dL, so the overall incidence was 2.8 cases per 100 patient-years. One case was a patient treated with TDF/FTC + LPV/r, and the others were treated with TDF/FTC + ATV/r. No case of an acute increase in serum Cr was observed in the TDF/FTC + DRV/r group. The incidence of serum Cr increase more than 1.5 mg/dL in TDF/FTC + PI/r group was 4.0 cases per 100 patient-years. CONCLUSION: Although only a small number of patients were evaluated retrospectively from a single center, the TDF/FTC + PI/r regimen may have been related with relatively higher tendency of increment of serum Cr level. These findings reinforce the importance of close follow-ups of HIV-infected patients treated with the TDF/FTC + PI/r regimens.
Anti-Retroviral Agents ; Antiretroviral Therapy, Highly Active* ; Atazanavir Sulfate ; Creatinine* ; Darunavir ; Emtricitabine ; Follow-Up Studies ; HIV ; Humans ; Incidence* ; Integrases ; Lopinavir ; Medical Records ; Protease Inhibitors ; Retrospective Studies ; RNA-Directed DNA Polymerase ; Tenofovir

PURPOSE: This study was aimed to evaluate the result of inlay cortical strut bone grafts for large cysts or cavitary bone lesions in long bones. MATERIALS AND METHODS: Seven patients with large cyst or cavitary bony lesions were managed with curettage, allogeneic inlay cortical strut and cancellous bone grafts. Additional plate and screw fixations were performed in 6 patients. There were three SBCs, two FDs with secondary ABC changes, one FD and one post-cement spacer removal state. Three of them had pathologic fractures. Progression of bone healing and mechanical support and functional result were evaluated. The mean follow-up period was 25.4 months. RESULTS: Incorporations into host bones were progressed in all, average 4.2 months in six metaphyseal regions and 5.8 months in five diaphyseal regions respectively. Full structural supports were achieved in all except one patient without any additional procedures. No allograft-related complication was developed. Mean functional score according to the MSTS criteria was 29.6 at last follow up. CONCLUSION: Inlay cortical strut graft provided additional mechanical stability and bone stock for screw purchase in large cyst or cavitary defects of long bones, which allow early mobilization and excellent functional outcome.
Bone Cysts ; Curettage ; Early Ambulation ; Follow-Up Studies ; Fractures, Spontaneous ; Humans ; Inlays ; Transplants

Ewing sarcoma/peripheral primitive neuroectodermal tumor (ES/PPNET) arises from bone or soft tissue of many sites of body, but ES/PPNET, as primary lesion, in the soft tissue of neck is very uncommon. The authors experienced a case of ES/PPNET in a 17-year-old girl, which was manifested as isolated cervical mass in the soft tissue without any other suspected primary lesion or metastasis. We report the case with a brief review of the literature.
Adolescent ; Humans ; Neck ; Neoplasm Metastasis ; Neuroectodermal Tumors, Primitive ; Neuroectodermal Tumors, Primitive, Peripheral ; Sarcoma, Ewing

BACKGROUND: Early detection of metabolic syndrome (MS) is important to prevent complications. Yet, there is no internationally agreed definition for MS. This study was performed to compare the diagnostic criteria of MS using various definitions and agreements, and to find better definition for screening high risk group of coronary heart disease. METHODS: The participants were 426 men above forty years old who had visited to have health screening in a general hospital in Daegu from March to December in 2007. The diagnostic criteria of MS and Kappa statistic were calculated according to the following five diagnostic definitions; modified World Health Organization (WHO), National Cholesterol Education Program Third Adult Treatment Panel (NCEP-ATP III), International Diabetes Federation (IDF), American Heart Association/National Heart, Lung and Blood Institute (AHA/NHLBI) and NCEP-ATP III modified waist circumference > or = 90 cm (modified NCEP-ATP III). The sensitivity and specificity of each definition of MS were calculated with respect to high risk group by Framingham risk score (FRS). RESULTS: The diagnostic criteria of MS were 6.6% by IDF, 7.7% by WHO, 10.6% by NCEP-ATP III, 18.1% by modified NCEP-ATP III and 22.3% by AHA/NHLBI. The kappa satistic ranged from 0.30 to 0.87. The sensitivity of each definition with respect to FRS was 8.3% in IDF, 13.4% in WHO, 15.3% in NCEP-ATP III, 27.4% in modified NCEP-ATP III and 32.5% in AHA/NHLBI. CONCLUSION: There was great difference in the diagnostic criteria of MS according to diagnostic definitions. The author suggests that AHA/NHLBI or modified NCEP-ATP III definition may be better for screening high risk group of coronary heart disease than others.
Adult ; Cholesterol ; Coronary Disease ; Heart ; Hospitals, General ; Humans ; Lung ; Male ; Mass Screening ; Sensitivity and Specificity ; Waist Circumference ; World Health Organization

PURPOSE: To analyze clinical, radiological and pathological features as well as clinical outcome after surgical treatment of patients with secondary chondrosarcoma arising from osteochondroma(tosis). MATERIALS AND METHODS: We retrospectively reviewed clinical records, radiographs, pathologic slides of 14 patients. Nine patients were male and five were female. The mean age was 34 years. The mean follow-up period was 54 months. RESULTS: All patients had a history of previous mass since childhood or puberty. Preexisted osteochondroma was single in 3 patients and multiple in 10. Remaining 1 patient had multiple osteochondromatosis with enchondromatosis. MRI clearly provided thickness of cartilage cap, which was over 2 cm except in 2 cases. Chondrosarcoma was grade 1 in all except 1 case, which was grade 2. Wide excision was performed in 10 patients, marginal excision in 3 and amputation in 1. Twelve patients were doing very well without evidence of disease. Among 3 patients with marginal excision, 1 patient had local recurrence and 1 patient died of disease. CONCLUSION: Comprehensive understanding of clinical, radiological and pathological features of secondary chondrosarcoma is warranted for accurate diagnosis. The best result can be expected with early recognition of malignant change of osteohcondroma(tosis) and wide excision.
Amputation ; Cartilage ; Chondrosarcoma ; Enchondromatosis ; Female ; Follow-Up Studies ; Humans ; Male ; Osteochondroma ; Osteochondromatosis ; Puberty ; Recurrence ; Retrospective Studies

PURPOSE: To investigate prognostic factors influencing on local recurrence, distant metastasis and event-free survival of liposarcomas. MATERIALS AND METHODS: Fifty-two patients managed for liposarcomas since 1993 were analyzed respectively in the view of prognostic influence of patient age, tumor size, location, histologic type, histologic grade, resection type, surgical margin, chemotherapy and radiation therapy on local recurrence, distant metastasis and event-free survival. The mean follow up period was 39 months. The univariate and multivariate regression analysis were performed for statistical evaluation. RESULTS: The local recurrences occurred in 11 patients (21.2%) and distant metastasis in 4 patients (8%), Event-free survival rate at 4 year follow up was 67%. In univariate analysis, histologic grade, surgical margin, chemotherapy and radiation therapy were significant prognostic factors on local recurrence (p<0.05). However, histologic grade lost its significance in muitivariate analysis. Trunk location revealed higher rate of distant metastasis than extremity location. In univariate analysis on event-free survival. histologic grade and chemotherapy were significant factors (p<0.05). No factor remained significant in multivariate analysis. CONCLUSION: Considering selection bias, positive surgical margin was negative prognostic factor on local recurrence. Liposarcomas arisen in trunk revealed higher rate of distant metastasis. There was no independent prognostic factor on event-free survival of patients with liposarcomas.
Disease-Free Survival ; Extremities ; Follow-Up Studies ; Humans ; Liposarcoma ; Multivariate Analysis ; Neoplasm Metastasis ; Recurrence ; Retrospective Studies ; Selection Bias

PURPOSE: We wanted to evaluate the risk factors for developing lymphedema following axillary lymph node dissection in breast cancer patients. METHODS: Ninety-six patients who underwent axillary dissection for breast cancer were followed-up for up to 1 year. Lymphedema was assessed using a serial circumferential measurement method. More than a 2 cm difference in circumference was considered as clinically significant lymphedema. The effects of age, the body mass index (BMI), the cancer stage, chemotherapy, radiotherapy, the location of cancer and creating a latissimus dorsi (LD) flap on the development of lymphedema were analyzed. RESULTS: The incidence of lymphedema was increased with the advancing cancer stage. Radiotherapy was found to increase the incidence of lymphedema. Patients who had received an LD flap showed a lower incidence of lymphedema. CONCLUSION: These results could be useful as a clinical guideline for creating a management plan for postoperative lymphedema. Because there are some differences in the results between all the relevant reports, including ours, further research is needed in the form of a large, multi-center, long-term study.
Body Mass Index ; Breast Neoplasms* ; Breast* ; Drug Therapy ; Humans ; Incidence ; Lymph Node Excision ; Lymphedema* ; Radiotherapy ; Risk Factors* ; Superficial Back Muscles

PURPOSE: To analyze the clinical characteristics and outcome of Langerhans' cell histiocytosis that developed in patients younger than 2 years and to compare them with those of older patients. MATERIALS AND METHODS: The chief complaint, age of onset, site and number of bone involvements, systemic organ involvement, treatment and final outcome of fourteen cases of histologically proven Langerhans' cell histiocytosis that developed in patients younger than 2 years were analyzed retrospectively and compared with the results from those of fourteen older patients. The Fisher Exact test was used for statistical analysis. RESULTS: Langerhans' cell histiocytosis that developed in patients younger than 2 years had a more advanced stage (2.5/1.1), multiple bone involvement (2.7/1.7 sites) and a higher rate of systemic organ involvement (29%/0%). It required chemotherapy more often (9/2 patients). There was also a trend of frequent relapse and a lower rate of complete healing, but this was not statistically significant. Among the 62 bone lesions, 47 were healed by simple observation or systemic chemotherapy without the need for surgical intervention. CONCLUSION: Langerhans' cell histiocytosis that developed in patients younger than 2 years showed multiple bone involvement, more systemic involvement and a high recurrence rate. It also required systemic chemotherapy more often. However most bone lesions were managed successfully without the need for surgical intervention.
Age of Onset ; Drug Therapy ; Histiocytosis* ; Humans ; Recurrence ; Retrospective Studies

PURPOSE: Previously positive but currently negative HLA crossmatching is considered to be a risk factor not in the first renal transplantation but in the second renal transplantation. The aim of this study is to analyse the outcome of living-related renal transplantation with previously positive but currently negative HLA crossmatching. METHODS: The results of first HLA crossmatching, demographic characteristics, the outcome of renal trasplantation were examined in four patients undergoing renal transplantation with previously positive but currently negative HLA crossmatching. RESULTS: The acute rejection was occurred in 3 patients. Azotemia was improved with the immunosuppressive therapy containing tacrolimus. There were no graft failures in four patients for 1 year. In the first HLA crossmatching, anti-human globulin T cell HLA crossmatching was positive in all patients with acute rejection. The period that positive HLA crossmatchings were converted to negative was longer in patients with acute rejections than without acute rejections (177 days vs 22 days). CONCLUSION: There were 3 acute rejections in 6 patients undergoing living related renal transplantations with previously positive and current negative HLA crossmatching. There were no graft failure for 1 year.
Azotemia ; Humans ; Kidney Transplantation* ; Risk Factors ; Tacrolimus ; Transplants