The Therapeutic Effect of Human Embryonic Stem Cell-Derived Multipotent Mesenchymal Stem Cells on Chemical-Induced Cystitis in Rats / 대한배뇨장애요실금학회지

PURPOSE: To evaluate the therapeutic effect of human embryonic stem cell (hESC)-derived multipotent mesenchymal stem cells (M-MSCs) on ketamine-induced cystitis (KC) in rats. METHODS: To induce KC, 10-week-old female rats were injected with 25-mg/kg ketamine hydrochloride twice weekly for 12 weeks. In the sham group, phosphate buffered saline (PBS) was injected instead of ketamine. One week after the final injection of ketamine, the indicated doses (0.25, 0.5, and 1×106 cells) of M-MSCs (KC+M-MSC group) or PBS vehicle (KC group) were directly injected into the bladder wall. One week after M-MSC injection, the therapeutic outcomes were evaluated via cystometry, histological analyses, and measurement of gene expression. Next, we compared the efficacy of M-MSCs at a low dose (1×105 cells) to that of an identical dose of adult bone marrow (BM)-derived MSCs. RESULTS: Rats in the KC group exhibited increased voiding frequency and reduced bladder capacity compared to rats of the sham group. However, these parameters recovered after transplantation of M-MSCs at all doses tested. KC bladders exhibited markedly increased mast cell infiltration, apoptosis, and tissue fibrosis. Administration of M-MSCs significantly reversed these characteristic histological alterations. Gene expression analyses indicated that several genes associated with tissue fibrosis were markedly upregulated in KC bladders. However the expression of these genes was significantly suppressed by the administration of M-MSCs. Importantly, M-MSCs ameliorated bladder deterioration in KC rats after injection of a low dose (1×105) of cells, at which point BM-derived MSCs did not substantially improve bladder function. CONCLUSIONS: This study demonstrates for the first time the therapeutic efficacy of hESC-derived M-MSCs on KC in rats. M-MSCs restored bladder function more effectively than did BM-derived MSCs, protecting against abnormal changes including mast cell infiltration, apoptosis and fibrotic damage.

Brodie's Abscess: A Case Report / 대한정형외과학회잡지

Brodie's abscess is a primary subacute pyogenic osteomyelitis that has a thin wall of fibrous tissue and sclerotic bone. The authors have encountered a case of a Brodie's abscess that was developed in the same place of both tibia at the same time and treated the case with surgery and continuous closed irrigation.

Two Cases Reports of Infantile Cortical Hyperostosis / 대한정형외과학회잡지

The infantile cortical hyperostosis is relatively rare unknown cause disease. After the first report of a case of this was that of caffey in 1945, this disease is increasing in frequency. This disease characterized by subperiosteal new bone formation on various bone, leukocytosis, increased Erythrocyte Seidmentation Rate, fever. We experienced two cases of this and reported them in this paper with a brief review of tbe literature.

A Clinical Study on the Trochanteric Fracture of Adult / 대한정형외과학회잡지

Complications after surgical treatment of trochanteric fracture such as varus deformity or delayed union are frequent and there are many difficulties to maintain the stability of fragments because of the cortical deficit or comminution on medial aspect of the neck and posterior trochanteric fragment. Evans, Dimon, Sarmiento and others suggested several methods of internal fixation, furthermore it is attempted recently to reduce the fragments anatomically with sliding compression hip screw and plate. 31 cases of interal fixation on trochanteric fracture were carried out from March, 1972 to February 1979 at the Orthopaedic Department of Seoul Adventist Hospital and their comparable results were as follows. 1. Acceptable placement of metals was noted 2 cases of 6 cases in Smith-Petersen nail with Thornton plate fixation, 2 cases out of 8 cases in Smith-Petersen nail with McLaughlin plate fixation and 9 cases out of 14 cases in sliding compression hip screw and plate fixation. 2. Complications after internal fixation such as varus deformity and delayed union were noted 1 case out of 3 cases in multiple pinning, 3 cases out of 6 cases in Smith-Petersen nail with Thornton plate fixation, 4 cases out of 8 cases in Smith-Petersen nail with McLaughlin plate fixation, 4 cases out of 14 cases in sliding compression hip screw and plate fixation. 3. Required weeks in union were 18 weeks in Multiple pinning, 20 weeks in Smith-Petersen nail with Thornton plate fixation, 25 weeks in Smith-Petersen nail with McLaughlin plate fixation and 16 weeks in sliding compression hip screw and plate fixation. 4. There are few complications in treatment of trochanteric fracture with surgical procedure using Sliding compression hip screw and plate.