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허지승,심은정,서은민,조도준,김덕하,민기식,유기양,이관섭 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.5
Purpose:We analyzed the clinical features, management and outcome of small bowel intussusception in children compared with ileocolic intussusception. Methods:We retrospectively reviewed the records of 210 children with documented intussusception, in whom intussusception was initially diagnosed by ultrasonography during the four-year period of 2002 to 2005. Results:A total of 191 children were diagnosed with ileocolic intussusception and 19 were diagnosed with small bowel intussusception. Children with small bowel intussusception were older than children with ileocolic intussusception (P<0.05). In comparison to patients with ileocolic intussusception the characteristic presenting symptomssuch as currant jelly stool and palpable masswere rarely observed in patients with small bowel intussusception. In ileocolic intussusception, air reduction (92.2%), or surgical reduction (7.3%) was performed; however, in small bowel intussusception, spontaneous reduction (78.9%) was observed and no surgical reduction was required in our study. Conclusion:Conservative management with close observation and follow-up sonographic evaluation rather than an immediate operation is recommended for children with small bowel intussusception. (Korean J Pediatr 2008;51: 500- 505) Purpose:We analyzed the clinical features, management and outcome of small bowel intussusception in children compared with ileocolic intussusception. Methods:We retrospectively reviewed the records of 210 children with documented intussusception, in whom intussusception was initially diagnosed by ultrasonography during the four-year period of 2002 to 2005. Results:A total of 191 children were diagnosed with ileocolic intussusception and 19 were diagnosed with small bowel intussusception. Children with small bowel intussusception were older than children with ileocolic intussusception (P<0.05). In comparison to patients with ileocolic intussusception the characteristic presenting symptomssuch as currant jelly stool and palpable masswere rarely observed in patients with small bowel intussusception. In ileocolic intussusception, air reduction (92.2%), or surgical reduction (7.3%) was performed; however, in small bowel intussusception, spontaneous reduction (78.9%) was observed and no surgical reduction was required in our study. Conclusion:Conservative management with close observation and follow-up sonographic evaluation rather than an immediate operation is recommended for children with small bowel intussusception. (Korean J Pediatr 2008;51: 500- 505)
Two cases of central nervous system complications caused by Mycoplasma pneumoniae infection
김신미,허지승,심은정,이대형 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.5
Mycoplasma pneumoniae (M. pneumoniae) infection causes a wide variety of clinical manifestations in children and young adults, the main one being pneumonia. M. pneumoniae is transmitted from person to person by infected respiratory droplets. Symptoms caused by M. pneumoniae infection can be divided into those involving the respiratory tract, and those caused by extrapulmonary disease. M. pneumoniae infections may cause central nervous system (CNS) complicationswith encephalitis being the most frequentand stroke being a rare complication. The pathogenesis of the CNS disease is unclear; possibilities include direct infection and an immune-mediated reaction. We present two cases of CNS complications subsequent to infection with M. pneumoniae; both cases had convincing evidence of preceding M. pneumoniae respiratory disease with no evidence of viable M. pneumoniae in the cerebrospinal fluid. We report cases of encephalitis and stroke following a recent M. pneumoniae infection. (Korean J Pediatr 2008;51:533-537)
Application of magnetic nanoparticle for controlled tissue assembly and tissue engineering
이은지,임현구,허지승,김환,정기영,Nathaniel Suk-Yeon Hwang 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.1
Magnetic nanoparticles have been subjected toextensive studies in the past few decades owing to theirpromising potentials in biomedical applications. The versatileintrinsic properties of magnetic nanoparticles enable theiruse in many biomedical applications. Recently, magneticnanoparticles were utilized to control the cell’s function. Inaddition, intracellular delivery of magnetic nanoparticlesallowed cell’s positioning by appropriate use of magneticfield and created cellular cluster. Furthermore, magneticnanoparticles have been utilized to assemble more complextissue structures than those that are achieved by conventionalscaffold-based tissue engineering strategies. This reviewaddresses recent work in the use magnetic nanoparticle forcontrolled tissue assembly and complex tissue formation.