1.Primary Cutaneous T Cell Lymphoma (Gamma Delta subtype)
Yong Khee Guan ; Chye Chung Gan
The Medical Journal of Malaysia 2016;71(5):296-297
Primary cutaneous T-cell lymphoma gamma-delta subtype is
an extremely rare entity of all the cutaneous T-cell
lymphomas. Our case provides an insight on clinical
behavior and treatment response with feasible effective
combination chemotherapy. We believe this will be of great
interest to clinicians when facing this difficult clinical entity.
We present a case of a 66-year-old Malay man with a threeweek
history of rapidly growing skin nodules and plaques
which spread throughout his body. He was commenced on
combination chemotherapy gemcitabine, etoposide, and
carboplatin with near complete remission on completion of
second cycle but he defaulted. He relapsed within a month
and he progressed despite treatment with the same regime.
He was salvaged with fludarabine, cytarabine, and
vinblastine combination chemotherapy but progressed with
brain metastasis and died. However, more investigations
and studies need to be done in this relatively unknown rare
entity. A rare lymphoma registry might be of help to better
understand and treat similar conditions.
2.The Effect of Extracellular Collagen on Synthesis of Extracellular Matrix in a 3-Dimensional Culture of Intervertebral Disc Cells.
Hong Jun PARK ; Soo Bong HAHN ; Seong Hwan MOON ; Hyang KIM ; Hwan Mo LEE ; Yung Khee CHUNG ; Jung Han YOO ; Yong Wook PARK ; Nam Hyun KIM
Journal of Korean Society of Spine Surgery 2002;9(2):70-77
STUDY DESIGN: In-vitro experimental study. OBJECTIVES: To determine the proteoglycan synthesis of the rabbit nucleus pulposus cells in various concentration of extracellular collagen type I and II under the stimulation of TGF-beta1. SUMMARY OF LITERATURE REVIEW: Therapeutic effect of growth factor and gene therapy can be altered by composition of extracellular matrix. However, the effect of extracellular collagen types I and II on synthetic activity of intervertebral disc cells is not thoroughly studied before. MATERIALS AND METHODS: The nucleus pulposus cells were isolated and cultured from 10 skeletally mature rabbits. Cultures were trypsinized and incorporated into alginate beads with different concentration of extracellular collagen type I and II (0.5%, 1.0% and 1.5%). Those cultures with TGF-beta1 (10 ng/ml) served stimulated condition of matrix synthesis. Newly synthesized proteoglycans were assessed by 35 S-sulfate incorporation using chromatography on Sephadex G-25 in PD-10 columns. Scintillation count was normalized with DNA content by Hoechst dye method. RESULTS: In basal condition, difference in proteoglycan synthesis in given concentration of extracellular collagen type I and II were statistically insignificant. In stimulated condition with TGF-beta1, difference in proteoglycan synthesis in given concentration of extracellular collagen type I and II was also statistically insignificant. However, cultures in stimulated condition with TGF-beta1 showed increased amount of newly synthesized proteoglycans compared to those of basal condition regardless of the concentration of extracellular collagen type I and II (p < 0.05). CONCLUSION: Anabolic response of rabbit nucleus pulposus cells is relatively insensitive to extracellular matrix composition, which facilitates application of gene therapy in various conditions of disc degeneration.
Chromatography
;
Collagen Type I
;
Collagen*
;
DNA
;
Extracellular Matrix*
;
Genetic Therapy
;
Intervertebral Disc Degeneration
;
Intervertebral Disc*
;
Proteoglycans
;
Rabbits
;
Transforming Growth Factor beta1
;
Trypsin
3.Origins of Dorsal Root Ganglion Cells with CGRP innervating Quadriceps Femoris Tendon of Rat.
Chul Min KIM ; Yung Khee CHUNG ; Jung Han YOO ; Yong Wook PARK ; Hong Jun PARK ; Yang Bum CHO ; Hyun Chul JIN ; Moo Ho WON ; Tae Cheon KANG
The Journal of the Korean Orthopaedic Association 2002;37(2):274-280
PURPOSE: This study was undertaken to determine the origins of dorsal root ganglion (DRG) cells containing calcitonin gene-related peptide (CGRP) which innervate the quadriceps femoris tendon in the rat. MATERIALS AND METHODS: DRG cells containing CGRP, which innervate the quadriceps femoris tendon, from 25 rats (Sprague-Dawley, 200-250 g) were examined using the retrograde tracing technique (neural tracers: horseradish peroxidase and fluorogold) combined with immunohistochemistry. RESULTS: Injection of horseradish peroxidase (HRP) or fluoro-gold (FG) into the quadriceps femoris tendon resulted in the ipsilaterally labelling of cells between L1 and L6 DRGs. However, a large number of the labelled cells innervating the quadriceps femoris tendon were found in the L3 and L4 DRGs. Many DRG cells were immunostained with CGRP antibody in the L1-6 DRGs. The number of CGRP immunoreactive cells in the lumbar DRGs was larger than in the sacral DRG. FG labelled cells containing CGRP immunoreactivity (FG+CGRP cells) were found in the lumbosacral DRGs. Many FG+CGRP cells innervating the quadriceps femoris tendon were located in the L3 and L4 DRGs. CONCLUSION: These results show that the main DRG origin for the sensory innervation of the quadriceps femoris tendon is L3 or L4. The neurogenic pain of the quadriceps femoris tendon may originate from this region, and suggests that this may be important for the release of neurogenic pain.
Animals
;
Calcitonin Gene-Related Peptide
;
Diagnosis-Related Groups
;
Ganglia, Spinal*
;
Horseradish Peroxidase
;
Immunohistochemistry
;
Quadriceps Muscle*
;
Rats*
;
Spinal Nerve Roots*
;
Tendons*
4.The Distribution of CGRP Containing Cells Innervating the Calcaneal Tendon in Rat Dorsal Root Ganglia.
Cheol Min KIM ; Yong Wook PARK ; Jung Han YOO ; Ji Dong LEE ; Tae Cheon KANG ; Seung Kook PARK ; Moo Ho WON ; Yung Khee CHUNG
Korean Journal of Anatomy 2002;35(3):219-228
This study was performed to investigate origins of the dorsal root ganglion cells containing calcitonin gene -related peptide (CGRP) which innervate the calcaneal tendon in the rat. We used the horseradish peroxidase (HRP) or fluoro -gold (FG) to trace retrogradely somatic afferents in dorsal root ganglion cells after unilateral injections into the rat calcaneal tendon. HRP or fluoro -gold labeled DRG cells for the calcaneal tendon were seen generaaly in lumbosacral (L1 to S1) DRGs ipsilaterally. In lumbosacral DRGs, the largest number of labeled cells were found in the L6 DRG. Many DRG cell bodies contained the CGRP throughout the L1~S1. A plenty of HRP -or FG -labeled cells innervating the calcaneal tendon were also identified to contain the CGRP in L1~S1 DRGs. These FG +/- CGRP DRG cells innervating the calcaneal tendon were primarily found in the L6 DRG. These results suggest that the main sensory DRG for the calcaneal tendon is the L6. This fact may be available in diagnosis and treatment of neurogenic pain in the calcaneal tendon.
Animals
;
Calcitonin
;
Diagnosis
;
Diagnosis-Related Groups
;
Ganglia, Spinal*
;
Horseradish Peroxidase
;
Immunohistochemistry
;
Rats*
;
Spinal Nerve Roots*
;
Tendons*
5.Magnetic Resonance Arthrography in the evaluation of Anterior Glenohumeral Instability.
Jin Sub KIM ; Yong Wook PARK ; Jung Han YOO ; Yung Khee CHUNG ; Sung Han HA
The Journal of the Korean Orthopaedic Association 1998;33(5):1240-1247
Anterior glenohumeral instability is mainly due to the Bankart lesion and capsular stretch. The differentiation between the Bankart lesion and capsular laxity may not be readily apparent on clinical examination. So, increasing attention has been directed toward preoperative evaluation of the labral lesion and capsular laxity. MRI and MR Arthrogram of 55 shoulders, 40 stable shoulders and 15 unstable shoulders that were confirmed by arthroscopic surgery, were reviewed to evaluate the labral and capsular shapes, especially the lesions of labroligamentous complex. To evaluate and compare the capsular laxity, we measured the anterior capsular insertion type, capsular ballooning, capsular insertion angle and anterior band of inferior glenohumeral ligament. And the following results were obtained; 1) The shape of anterior labrum was varied in the superior, middle and inferior potions in 40 stable shoulders. The anterior labral lesions were shown as torn(eight cases), displaced(six cases) and no detectable labrum(one case), in 15 unstable shoulders. Also, there were a significant di fference in the evaluation of the anteior labrum shape between MRI and MR arthrography. 2) There were not a significant difference in the type III capsular insertion type, capsular ballooning and capsular insertion angle between the stable and unstable shoulders. However, it was found that the shape of the anterior band of the inferior glenohumeral ligament had definite difference between the two groups. And so, more experience and attention should be given for the accurate preoperative evaluation of the anterior labroligamentous complex in shoulder instability.
Arthrography*
;
Arthroscopy
;
Ligaments
;
Magnetic Resonance Imaging
;
Shoulder
6.Arthroscopic Evaluation for Acute Traumatic Anterior Dislocation of the Shoulder.
Jin Sub KIM ; Chang Soo OH ; Yong Wook PARK ; Jung Han YOO ; Yung Khee CHUNG ; Sung Han HA
The Journal of the Korean Orthopaedic Association 1998;33(1):54-60
There are many complications after traumatic shoulder dislocation including redislocation, dislocation capsulitis especially in the older age and dislocation arthropathy. Redislocation rates have been primarily related to age at the time of initial dislocation, to lesser degree, athletic participation, length of immobilization, rehabilitative exercises, and time hefore return to sports or full activity. So we wanted to confirm the difference of the lesion between the young and the old at the initial dislocation. Arthroscopic evaluation of the twelve patients with an acute traumatic anterior dislocation of the shoulder was done to identify the intraarticular pathology within 10 days of the initial injury. All patients were taken MRI and evaluated under anesthesia. We classified these shoulders into two groups based on the age of patient. Young agegroup under 30 were seven patients and old age-group over 40 were five patients. And the following results were ohtained; 1. The detachment of the anterior labrum with the inferior glenohumeral ligament from the glenoid rim was primary finding and might cause the shoulder unstable under anesthesia in the young age-group under 30. 2. In the age-group over 40, there were the capsular tears with no labral lesion and these shoulders were stable under anesthesia 3. In acute traumatic anterior dislocation, examination under anesthesia was more closely related to the prediction of the extent of labro-ligamental detachment than MRI examination. 4. We believe that arthroscopic surgical intervention after the initial shoulder dislocation should be considered as a treatment option
Anesthesia
;
Arthroscopy
;
Dislocations*
;
Exercise
;
Humans
;
Immobilization
;
Ligaments
;
Magnetic Resonance Imaging
;
Pathology
;
Shoulder Dislocation
;
Shoulder*
;
Sports
7.Treatment of Fracture of the Tibial Intercondylar Eminence with Arthroscopic Pull-Out Suture.
Jung Han YOO ; Yong Wook PARK ; Jin Sub KIM ; Yung Khee CHUNG ; Sun O YU
Journal of the Korean Knee Society 1998;10(1):50-55
The purpose of this study is to demonstrate the effectiveness of arthrocopic treatment for the avulsion fracture of intercondylar eminence of the tibia and of the technique of arthroscopically assisted reduction and fixation through pull-out suture method. Between January 1995 and May 1997, three patients were underwent arthroscopic reduction and suture fixation for type 0 of avulsion fracture of intercondylar eminence of tibia and were followed up. The result of two patients were graded as normal and one as nearly normal by the criteria of the International Knee Documentation Committee(IKDC) rating scale. The advantages of this technique include no retained hardware and ability to treat comminuted fracture(type g ). We describe technique of arthroscopic reduction and suture fixasion for displaced avulsion fractures, including those with comminution of intercondylar eminence of tibia.
Humans
;
Knee
;
Sutures*
;
Tibia
8.Cannulated Screw Fixation for Femoral Neck Fractures.
Yung Khee CHUNG ; Jung Han YOO ; Yong Wook PARK ; Dong Cheol PYO
The Journal of the Korean Orthopaedic Association 1997;32(1):68-73
We reviewed retrospectively the results of stabilization of femoral neck fracture using multiple cannulated screws, in 20 patients who were treated at the department of Orthopaedic Surgery, Kangnam Sacred Heart Hospital from January 1991 through July 1995. With the average follow up of 2 years (from 1 year to 4.5 years), we analyzed these patients with the adequacy of reduction by Garden's alignment index and the functional results of the hip by the Lunceford method. The mean age of patients was 70 years (ranged from 34 to 88 years). The types of fracture according to Garden's classification were fifteen cases of Garden stage I or II, and five cases of Garden stage III or IV. The average interval from injury to operation was four days, ranging from I to 14 days. The adequacy of reduction by Garden's alignment index were as follows: anatomic in 8, acceptable in 10 and poor in 2 cases. According to the Lunceford method, the functional results were as follows: excellent in II, good in 6, fair in 1 and poor in 2 cases, respectively. We found that good result out of the femoral neck fractures, especially for stage I and II with the anatomical and acceptable reduction, can be expected by multiple cannulated screw fixation and early ambulation as possible.
Classification
;
Early Ambulation
;
Femoral Neck Fractures*
;
Femur Neck*
;
Follow-Up Studies
;
Heart
;
Hip
;
Humans
;
Retrospective Studies
9.Cannulated Screw Fixation for Ankle and Hindfoot Arthrodesis.
Yung Khee CHUNG ; Jung Han YOO ; Yong Wook PARK ; Ji Dong LEE
The Journal of the Korean Orthopaedic Association 1997;32(4):944-951
Multiple fixation techniques for arthrodesis of the ankle and hindfoot have been introduced. The cannulated screw fixation provides excellent internal compression for arthrodesis. We used 5.0 and 6.5mm cannulated screws for seven ankle, seven subtalar, four tibiotalocalcaneal, three pantalar and two triple arthrodesis between January 1994 and September 1995. No iliac bone graft was utilized. The follow-up period was from 12 to 25 months. Ages of the patients ranged from 25 to 58 years. All fused except one who was preoperatively diagnosed as pyogenic arthritis of the ankle and hindfoot. One patient with diagnosis of Streeter's disease was complicated with partial necrosis of the forefoot. We think this procedure has several advantages; 1. The leg or foot length is largely preserved because minimal subchondral bone is removed. So, the leg and foot is aesthetically pleasing and the musculature around the ankle and foot can be maintained in the normal balanced position. 2. The rate of fusion is high, because the soft tissues are minimally stripped and cannulated screw compresses the subchondral bone surface. 3. The cannulated screws rarely requires removal. So, we believe that the cannulated screw fixation for the ankle and hindfoot arthrodesis is an excellent treatment method.
Ankle*
;
Arthritis
;
Arthrodesis*
;
Diagnosis
;
Follow-Up Studies
;
Foot
;
Humans
;
Leg
;
Necrosis
;
Transplants
10.The Proximal Tibial Physeal Changes in the Skeletally Immature Rabbits after the physeal Distraction.
Kee Chang SUNG ; Yung Khee CHUNG ; Jung Han YOO ; Yong Wook PARK ; Gyu Cheol ROH ; Kyung Ahn HYE ; Chang Min SONG
The Journal of the Korean Orthopaedic Association 1997;32(5):1341-1353
Physeal distraction is used for limb lengthening or correction of deformities in skeletally immature patients. But the effect of distraction on the physis is uncertain. The young rabbits were arranged into five groups according to the slow distraction rates: Group I (no distraction), Group II (distraction rate of 0.25mm per day), Group III (distraction rate of 0.5mm per day), Group IV (distraction rate of 0.75 mm per day), Group V (distraction rate of 1mm per day). The tibial length, size of proliferating zone, microscopic findings of physis immunostained with bromodeoxyuridine, and physeal response to physeal distraction on each group were studied. The results were as follows. 1. There was an increase in bone length on the distracted side (1.8 to 4.2mm). 2. There was an irregular increase in the thickness of the distracted physis. 3. There was an abnormal accumulation of hypertrophic chondrocytes in hypertrophic zone in distracted physis. 4. There was no evidence of anomalous cell proliferation, in the resting, proliferating and hypertrophic zones. These results conclude that the physeal distraction does not stimulate cell proliferation in the physis, even when it is seen to be thickened after the chondrodiatasis.
Bromodeoxyuridine
;
Cell Proliferation
;
Chondrocytes
;
Congenital Abnormalities
;
Extremities
;
Humans
;
Rabbits*

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