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Ahn, Ji-Hyun,Lee, Tae-Hyeong,Oh, Jong-Soo,Kim, Su-Yeon,Kim, Hyun-Jung,Park, Il-Kyu,Choi, Baek-Sun,Im, Gun-Ii Mary Ann Liebert 2009 Tissue engineering. Part A Vol.15 No.9
<P>The authors devised a novel biphasic scaffold combining hyaluronic acid and atelocollagen for the chondral phase and combining hydroxyapatite (HA) and beta-tricalcium phosphate (beta-TCP) for the osseous phase. The biphasic scaffold was fabricated by placing the freeze-dried chondral phase over the HA/beta-TCP scaffold prewetted with hyaluronate/atelocollagen solution. Chondrocytes were isolated in 28 rabbits, expanded, injected inside the chondral phase of the biphasic scaffold, and then cultured in chondrogenic medium. After 2 weeks of in vitro culture, chondrocytes had evenly infiltrated inside the chondral phase and produced extracellular matrix. For in vivo study, a large osteochondral defect was made on the patellar groove of the right distal femur and managed using one of the following methods: filling with cell-biphasic scaffold composite (group I); implanting only biphasic scaffold (group II); placing the removed osteochondral fragments back into the defect (group III, positive control); leaving empty (group IV, negative control). Seven rabbits were allocated to each group. After 12 weeks, the International Cartilage Repair Society Macroscopic Score was highest in group III, followed by group I, group II, and lastly group IV. Depression of the defect was greatest in group IV. There were three rabbits (two in group I and one in group II) that were completely denuded of the chondral phase. The junction to adjacent native cartilage was distinct in rabbits of all groups. The International Cartilage Repair Society Visual Histological Score was highest in group III, followed by groups II and I, and lastly group IV. In conclusion, our results suggest that a biphasic osteochondral composite using a chondral phase consisting of hyaluronate and atelocollagen and an osseous phase consisting of HA and beta-TCP holds the promise for repair of osteochondral defects.</P>
Oral Syphilis Responds to Topical Antibiotic Therapy but Still Needs Definitive Systemic Treatment
Ahn, Kyu-Hyeon,Ji, Hyeong-Joon,Kim, Ok-Joon,Kim, Byung-Gook,Im, Yeong-Gwan Korean Academy of Orofacial Pain and Oral Medicine 2018 Journal of Oral Medicine and Pain Vol.43 No.1
Syphilis, one of the most common sexually transmitted diseases, is caused by the microorganism Treponema pallidum. Syphilis consists of several clinical stages that may include signs in the oral and perioral regions. Syphilis is treated effectively with systemic antimicrobial therapy using antibiotics such as penicillin. This article describes a case where topical antibacterial therapy with doxycycline was effective in treating oral papular lesions associated with primary syphilis in a 24-year-old male. He was immediately referred to a dermatologist, and antibiotic therapy was administered in response to positive diagnostic test results for syphilis. Although oral syphilitic lesions may be resolved by dental professionals using topical treatments, syphilitic infections should be managed in consultation with medical specialists using systemic antibiotic therapy.
Propylthiouracil에 의한 중증 급성간염 1예
임종주,심미령,이명수,김태현,오석규,안선호,박무림,김남호,박병현,조성구 圓光大學校 醫科學硏究所 2002 圓光醫科學 Vol.17 No.2
PTU에 의한 간염의 발생은 매우 드물게 발생하는 것으로 알려져 있으나 저자들은 Graves씨 병으로 진단 받고 propylthiouracil 투여를 받고있던 환자에서 중증의 급성 간염이 발생한 1예를 경험하였기에 보고하는 바이다. Propylthiouracil is widely used to treat patients with hyperthyroidism. This drug has been associated with severe hepatotoxicity rarely. We presented the case of jaundice and profound liver dysfunction from a 23-year old woman treated with propylthiouracil for hyperthyroidism. Viral, metabolic, and autoimmune liver disease could be excluded and liver biopsy revealed a pattern of acute hepatitis. After discontinuing the drug, there was a progressive resolution of hepatic symptoms and decrease in biochemical data of the liver. Despite propylthiouracil induced hepatitis in rare case, patients receiving propylthiouracil are exposed to develope severe hepatotoxicity. Therefore it might be advisable to monitor level of the transaminase on regular base from patients receiving propylthiouracil.
( Bo Kyu Yang ),( Seung Rim Yi ),( Ye Hyun Lee ),( Hyun See Kim ),( Seok Woo Nam ),( Young Joon Ahn ),( Seong Wan Kim ),( Sung Wook Yang ),( Se Hyuk Im ) 대한고관절학회 2014 Hip and Pelvis Vol.26 No.4
As an emergency encountered in orthopedic practice requiring prompt diagnosis and aggressive treatment, necrotizing fasciitis around the hip must be discriminated from Fournier gangrene. The current case report describes a patient who suffered from bilateral type I necrotizing fasciitis around the hips, which was alleviated by prompt surgical debridement and intensive postoperative care.
Ischial Tuberosity Avulsion Stress Fracture after Short Period of Repetitive Training
( Bo-kyu Yang ),( Seung-rim Yi ),( Young-joon Ahn ),( Se-hyuk Im ),( Sang-hyun Park ) 대한고관절학회 2016 Hip and Pelvis Vol.28 No.3
Fatigue fracture of the pelvis is the form of fracture due to repetitive micro-stress accumulation, can be affected by a number of factors such as patient’s nutritional status, biomechanics, social status and so on. Still there is no study about precise standard degree of external force that lead to stress fracture, but it may caused by compression force, traction force or complex force and others. Avulsion stress to ischial tuberosity or anterior superior iliac spine by attached muscle is known as the main factor for the avulsion fracture. This report will deal with 19 years old conscripted policeman who occurred ischial tuberosity avulsion fracture after training of 6- hour running for 5 days accompanying hip hyper-flexion motion. This reports aims to provide case study of stress fracture occurred after 5 days of exercise which is relatively short period who had no specific trauma history or pain.