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1.Effect of platelet-activating factor(PAF) on murine ovulation, early embryo development and implantation.

The important role of the epiphyseal cartilage in the longitudial growth of long bones is universally accepted. Injury to the epiphyseal plate caused by surgically produced defects or trauma has been observed clinically and in experimental investigations. These growth retarding effect of defects seem to be proportional to the size of the defect, and are caused by the formation of a bone bridge connecting the epiphysis to the metaphysis. This investigation provides an explanation for the intimate relationship between the size of the defect and growth retarding effect. Central destruction of the distal femoral epiphyseal plates on 81 immature rabbits were performed by four different sized drills. Free flaps of vastus lateralis were inserted into the defect of the epiphyseal plate. Left limbs were used as the experimental group, and right limbs as the control. After 8 weeks of operation, animals were sacrificed, and roentgenological and histological observations were made. The results were observed as follows. 1. The amount of bony bridge connecting epiphysis and metaphysis was proportional to the size of the epiphyseal defect. 2. The amount of growth retardation at the distal femoral epiphyseal plate was proportional to the size of the defect produced in the epiphyseal plate. 3. Compensatory overgrowth at the proximal femoral epiphysis seems to be proportional to the size of the defect made in the epiphyseal plate. 4. Insertion of the free flap of vastus laterials into the epiphyseal defect diminished the formation of the bony bridge.
Animals ; Epiphyses ; Extremities ; Free Tissue Flaps ; Growth Plate ; Quadriceps Muscle ; Rabbits

3.Clinical Investigation of Nail Changes in Psoriatic Patients.

Young Il CHUN ; Jai Il YOUN ; Yoo Shin LEE

Korean Journal of Dermatology 1986;24(1):35-42

This study was aimed to investigate the clinical manifestation of nail changes in psoriasis and was based on analysie of 205 p oriatics visited the department of dermatology, Seoul National University Hospital from November, 1984 to June, 1985. The results were summerized as follows: Nail changes were noted in 78(38. 0%) out of 205 patients in the finger nails. Toe nails were involved in 26(12 7%) cut of 205 patients. 2 Nail changes in male were noted in 49 (46, 7%) out of 105 patients and in female, 29(29%) out of 100 patients. 3. The peak incidence of nail changes according, to age group was over 40 years (45. 1%.) and the lowest incidence, under 9 years(26. 7%). 4, Pitting(57. 7%) was the commonest change ii the finger nails and subungal keratosis(50. 0%) and discoloration(46 2%) in the toe nails. 5 Incidence of nail changes according to psoriatic type was 23. 7% in guttate type, 42. 6% in nummular type, 53 3% in annular type. 6 The patients with the more severe degrees of psoriasis had a higher incidence of nail involvement. Mean duration of psoriatics with nail change and without nail change was 6. 3 years and 6. 5 years, respectively, 8 Among 65 patients with psoriatic nails, onychomycosis was noted in 9 patients(13.8%).
Dermatology ; Female ; Fingers ; Humans ; Incidence ; Male ; Onychomycosis ; Psoriasis ; Seoul ; Toes