1.The Predisposing Causes Associated with a Poor Outcome for the Surgical Treatment of Ruptured Cerebral Aneurysms.
Jung Ho YUN ; Maeng Ki CHO ; Chun Sung CHO
Korean Journal of Cerebrovascular Surgery 2009;11(4):167-173
OBJECTIVE: We analyzed the main causes leading to a poor outcome (severe disability, a vegetative state and death) following surgical treatment for ruptured intracerbral aneurysms. METHODS: Between January 1994 and December 2007, we maintained a retrospective database of 339 patients who underwent surgical clipping. The various causes we investigated were the technical problems during operation, the initial SAH or ICH, vasospasm, hydrocephalus and the post-operative medical complications. The clinical outcome was assessed according to the Glasgow Coma Scale (GOS). RESULTS: There were 263 cases of good outcomes (77.6%) and 76 cases of poor outcomes (22.4%). The three main causes of a poor outcome were 1) preoperative causes such as the direct insult of the initial SAH and ICH in 21 cases (27.6%), 2) intra-operative causes such as the technical problems during dissection and clipping of the aneurysm neck in 29 cases (38.2%) and 3) postoperative causes such as clinical vasospasm in 16 cases (21.1%). The mean follow-up period was 17.6 months (range : 2 months to 9 years). CONCLUSION: A meticulous neck dissection and complete obliteration of the aneurysm preserving parent arteries and perforators are the most effective and prime methods that surgeons can employ to reduce the rate of poor outcomes when performing ruptured aneurysm surgery.
Aneurysm
;
Aneurysm, Ruptured
;
Arteries
;
Follow-Up Studies
;
Glasgow Coma Scale
;
Humans
;
Hydrocephalus
;
Intracranial Aneurysm
;
Microsurgery
;
Neck
;
Neck Dissection
;
Parents
;
Persistent Vegetative State
;
Retrospective Studies
;
Surgical Instruments
2.Inflammation as the Potential Basis in Depression
International Neurourology Journal 2019;23(Suppl 2):S63-S71
There is growing evidence of the association between inflammation and stress-related disorders including depression. The positive correlation between the increased levels of inflammatory cytokines observed in patients with other diseases and the byproduct of the depressive symptoms may be caused by chronic stress. Increased neuroinflammatory responses are capable of activating microglia and astrocytes, which leads to release pro-inflammatory cytokines. Moreover, elevated levels of inflammatory cytokines such as tumor necrosis factor-alpha, interleukin (IL)-1, and IL-6 are causally related to various aspects of depression such as the behavioral symptomatology. Eventually, these elevated cytokines aggravate and propagate neuroinflammation, impairing brain functions. Thus, activated astrocytes and microglia may be potential mediators in neuroinflammatory processes contributing to the development of depression.
3.Treatment of Potassium Titanyl Phosphate Laser and Radiation Therapy for Tracheal Stenosis.
Kwang Taik KIM ; Maeng Ho KIM ; Chul Yong KIM ; In Sung LEE ; Hyoung Mook KIM ; Hark Jei KIM
The Korean Journal of Thoracic and Cardiovascular Surgery 1997;30(12):1237-1241
Tracheal stenosis is a difficult disease entity to manage. Laser ablation is one effective treatment for treacheal stenosis and can be utilized if tracheal reconstructive surgery is impossible. Potassium titanyl phosphate laser, transmitted via flexible quartz fiber, can be precisely manipulated through flexible bronchoscope under local anesthesia. We treated 7 patients with tracheal and broncheal lesion under local anesthesia with KTP laser from January 1995 to July 1996. The patients included three males and four females. The age of patients ranged from 22 to 66 years with a mean of 43.7 years. The etiology of tracheal stenosis in patients was stenosis after tracheostomy(3 cases), prolong inturbation in cases of sepsis(1 cases), and the recurrence of lung cancer within endobronchial lesion(2 cases). In the cases of tracheal stenosis treated with laser ablation, there were 2 cases of recurrence of stenosis at the anastomosis site after the operation, 3 cases of stenosis at tracheostomy site, and 2 cases of local recurrence of lung cancer. The site of the tracheal stenosis was the balloon site of the tracheostomy tube(3-4cm inferior to the tracheostomy site, 2-3cm superior to the carina) and the anastomosis site that were narrowed to less than 5mm(4 cases). For the stenosis lesion in the endobronchial area, there were 2 patients with a lesion at the anterior wall, 1 patient with a lesion at the posterior wall, 2 patients with circumferential stenosis. Laser ablation time was 25.4+/-5.9min and used energy was 1768+/-365J. We have used KTP laser via flexible bronchoscope without major complications. Adjuvant radiation therapy may prevent fibroblast proliferation which leads to restenosis. In three patients of restenosis after laser ablation, adjuvant irradiation started within 4 hours after laser ablation, and the radiation doses were 1500cGy given in five fraction. In patients with adjuvant radiation therapy, stenosis has not recurred.
Anesthesia, Local
;
Bronchoscopes
;
Constriction, Pathologic
;
Female
;
Fibroblasts
;
Humans
;
Laser Therapy
;
Lasers, Solid-State
;
Lung Neoplasms
;
Male
;
Potassium*
;
Quartz
;
Radiotherapy, Adjuvant
;
Recurrence
;
Tracheal Stenosis*
;
Tracheostomy
4.The Analysis of Procedural Complications of Endovascular Aneurysm Coiling with GDC.
Jung Ho KO ; Young Joon KIM ; Joon Sung CHO ; Keun Tae CHO ; Bong Jin PARK ; Maeng Ki CHO
Journal of Korean Neurosurgical Society 2004;36(5):394-399
OBJECTIVE: The safety and effectiveness of Guglielmi Detachable Coil(GDC) embolization for cerebral aneurysm has been well documented. However, domestically there are few reports. The purpose of this study is to analyze procedural complications that occurred during endovascular coilling performed for cerebral aneurysms retrospectively. METHODS: From January 1996 to December 2003, a total of 453 patients (484 aneurysms) who had undergone GDC embolization for cerebral aneurysm were selected. The aneurysms were classified according to rupture history, location, dome and neck size. Procedural complications such as aneurysmal rupture, thrombosis and occlusion of patent vessels due to coil escape were noted. RESULTS: Procedural complications occurred 49 cases (10.1%). Among these, there were 27 of procedure-related aneurysmal rupture (5.6%), 14 of thrombosis (2.9%), 8 of occlusion of patent vessels due to coil escape (1.7%). Death or severe neurological deficit were seen in 18 cases of procedure-related rupture, 9 cases of thrombosis and 4 cases of coil escape. Procedure-related mortality and morbidity rates for endovascular coiling were calculated to be 2.9% and 3.6% respectively. CONCLUSION: The potential complications associated with shape, size and relationship to parent vessels of each specific cerebral aneurysm must be considered carefully before treatment. In order to reduce complications, proper equipment, knowledge on the hemodynamics and vascular anatomy, and operator's expertise are desired.
Aneurysm*
;
Hemodynamics
;
Humans
;
Intracranial Aneurysm
;
Mortality
;
Neck
;
Parents
;
Retrospective Studies
;
Rupture
;
Thrombosis
;
United Nations
5.Mrakia terrae sp. nov. and Mrakia soli sp. nov., Two Novel Basidiomycetous Yeast Species Isolated from Soil in Korea
Yuna PARK ; Soohyun MAENG ; Junsang OH ; Gi-Ho SUNG ; Sathiyaraj SRINIVASAN
Mycobiology 2021;49(5):469-475
Three strains, YP416 T , YP421 T, and Y422, were isolated from soil samples in Pocheon City, Gyeonggi province, South Korea. The strains belong to two novel yeast species in the genus Mrakia. Molecular phylogenetic analysis showed that the strain YP416 T was closely related to Mrakia niccombsii. Still, it differed by 9 nucleotide substitutions with no gap (1.51%) in the D1/D2 domain of the LSU rRNA gene and 14 nucleotide substitutions with 7 gaps (2.36%) in the ITS region. The strain YP421 T differed from the type strain of the most closely related species, Mrakia aquatica, by 5 nucleotide substitutions with no gap (0.81%) in the D1/D2 domain of the LSU rRNA gene and 9 nucleotide substitutions with one gap (1.43%) in the ITS region. The names Mrakia terrae sp. nov. and Mrakia soli sp. nov. are proposed, with type strains YP416 T (KCTC 27886 T ) and YP421 T (KCTC 27890 T ), respectively. MycoBank numbers of the strains YP416 T and YP421 T are MB 836844 and MB 836847, respectively.
6.A case of adrenocortical adenoma clinically mimicking pheochromocytoma.
Mun Kyung CHUNG ; Yong Cheol KIM ; Eun Kyoung JEON ; Keun Ho LEE ; Lee So MAENG ; Je Ho HAN ; Sung Dae MOON
Korean Journal of Medicine 2008;75(4):479-483
The coexpression of cortical and medullary features in a single adrenal cortical cell has been recognized, leading to terms such as cortico-medullary cells. Here, we reported a case of adrenocortical adenoma consisting of cortico-medullary cells that clinically mimicked pheochromocytoma. A 52-year-old woman was admitted to our hospital complaining of an 8-month history of paroxysmal palpitation with refractory hypertension. A 24-hour urine study revealed increased norepinephrine and metanephrine levels. Computed tomography of the abdomen revealed a 1.0x0.9-cm mass in the left adrenal gland. The patient subsequently underwent unilateral laparoscopic adrenalectomy for a presumptive pheochromocytoma. Light microscopic findings of the left adrenal mass indicated an adrenocortical adenoma, but electron microscopy identified lipid vacuoles and smooth endoplasmic reticulum, along with dense core neurosecretory granules, so-called cortico-medullary cells. This is the first report of the detection of cortico-medullary cells in adrenocortical adenoma presenting as pheochromocytoma in Korea.
Abdomen
;
Adrenal Glands
;
Adrenalectomy
;
Adrenocortical Adenoma
;
Endoplasmic Reticulum, Smooth
;
Female
;
Humans
;
Hypertension
;
Light
;
Metanephrine
;
Microscopy, Electron
;
Middle Aged
;
Norepinephrine
;
Pheochromocytoma
;
Vacuoles
7.Study of dopamine transporter in the rat 6-hydroxydopamine Parkinson's disease model.
Sang Yun KIM ; Jae Min JUNG ; Young Soo CHANG ; Wan Seok JOO ; Sung Ho MAENG ; Chung Gun HA ; Jong Min KIM ; Yong Sik KIM ; Myung Chul LEE ; Sang Bok LEE ; Beom S JEON
Journal of the Korean Neurological Association 1998;16(4):536-546
BACKGROUND: Neuroprotective therapy is essential in the management of Parkinson's disease(PD). As symptomatic benefit of a treatment may clinically mask the disease progression, an evaluation of the effect of a neuroprotective therapy should be based on objective measurement of in vivo dopaminergic integrity: Nuclear imaging techniques such as SPECT or PET can visualize dopaminergic system using dopamine transporter ligands and show the promise for this purpose. The objective of this study is to examine the changes of dopamine transporter in the animal model of PD and those correlations with behavioral and biochemical changes. METHODS: We injected 6-hydroxydopamine into the substantia nigra in Sprague-Dawley rats to establish the unilateral PD model, and examined the rotation response after apomorphine injection as a behavioral aspect of the animal model. And we also measured the dopamine and DOPAC level in the striata and the dopamine transporter by [3H]-mazindol autoradiography. RESULTS: We observed that the rats showed turning behavior only after severe reduction of dopamine and DOPAC. There was a strong inverse correlation between rotation behavior and striatal dopamine, DOPAC and dopamine transporter density. There was a positive and strong linear-correlation between dopamine transporter density and dopamine or DOPAC levels. CONCLUSION: Measurement of dopamine transporter gives a good estimate of striatal dopamine level in an animal model of PD. In vivo measurement of dopamine transporter will give an objective information on the integrity of presynaptic nigrostriatal dopaminergic system.
3,4-Dihydroxyphenylacetic Acid
;
Animals
;
Apomorphine
;
Autoradiography
;
Disease Progression
;
Dopamine Plasma Membrane Transport Proteins*
;
Dopamine*
;
Ligands
;
Masks
;
Models, Animal
;
Oxidopamine*
;
Parkinson Disease*
;
Rats*
;
Rats, Sprague-Dawley
;
Substantia Nigra
;
Tomography, Emission-Computed, Single-Photon
8.A Case of Small Intestinal Signet Ring Cell Carcinoma in Crohn's Disease.
Joon Sung KIM ; Dae Young CHEUNG ; Soo Heon PARK ; Hye Kang KIM ; Il Ho MAENG ; Su Yoen KIM ; Jin Il KIM ; Jae Kwang KIM
The Korean Journal of Gastroenterology 2007;50(1):51-55
Crohn's disease and ulcerative colitis are well known risk factors of intestinal cancer in relation to the extent and duration of disease. Rarely, small bowel cancer can develop after a longstanding inflammation of Crohn's disease with a relatively higher incidence than the general population. Signet ring cell carcinoma is a rare condition among intestinal cancers, and the diagnosis or detection is more difficult if the cancer originates from the small bowel. We report a case of a 30-year old female in whom signet ring cell carcinoma of ileum was diagnosed after a 15-year history of Crohn's disease.
Adult
;
Carcinoma, Signet Ring Cell/*diagnosis/etiology/pathology
;
Colonoscopy
;
Crohn Disease/*complications/diagnosis/pathology
;
Female
;
Humans
;
Ileal Neoplasms/*diagnosis/etiology/pathology
;
Tomography, X-Ray Computed
9.A Case of Acute Purulent Pericarditis, Caused by Klebsiella Pneumoniae, without Preceeding Diseases.
Seungmin BANG ; Seunghyun KWON ; Byung Chang KIM ; Ho Young MAENG ; Jae Hak KIM ; Deok Kyu CHO ; Young Won YOON ; Sung Kee RYU ; Donghoon CHOI
Korean Circulation Journal 2002;32(1):80-84
Acute pericarditis may be caused by a variety of disorders. Most cases of acute pericarditis without any initial apparent cause are idiopathic, although presumably viral in origin. While staphylococcus aureus, streptococcus pneumonias and streptococcus pyogens were the predominant organisms recovered prior to 1950, gram negative bacilli, anaerobic bacteria and fungus were recovered after 1950. These changes of the etiologic diversity of acute pericarditis were related to the development and advances of cardiac surgery, antibiotics, chemotherapy for cancer and immunosuppressive treatments. It is important for the therapy of acute bacterial pericarditis to establish the proper regimen of antibiotics and to drain pericardial effusion, if needed. We report a case of acute pericarditis, caused by Klebsiella pneumoniae, an uncommon pathogen that caused purulent pericarditis with cardiac tamponade.
Anti-Bacterial Agents
;
Bacteria, Anaerobic
;
Cardiac Tamponade
;
Drug Therapy
;
Fungi
;
Klebsiella pneumoniae*
;
Klebsiella*
;
Pericardial Effusion
;
Pericarditis*
;
Pneumonia
;
Staphylococcus aureus
;
Streptococcus
;
Thoracic Surgery
10.Treatment outcomes and clinical relevance of the Follicular Lymphoma International Prognostic Index in Korean follicular lymphoma patients treated with chemotherapy.
Chi Hoon MAENG ; Sung Woo AHN ; Seong Yoon RYU ; Sungjun HAN ; Young Hyeh KO ; Jun Ho JI ; Won Seog KIM ; Seok Jin KIM
The Korean Journal of Internal Medicine 2016;31(3):560-569
BACKGROUND/AIMS: The Follicular Lymphoma International Prognostic Index (FLIPI) and FLIPI2 are well-known prognostic models for patients with follicular lymphoma (FL). However, their prognostic relevance has not been examined before in Korean patients with FL. METHODS: We reviewed clinical and laboratory information from our database of patients between 1995 and 2012. In total, 125 patients were stratified in three categories according to FLIPI or FLIPI2 scores: low-, intermediate-, and high-risk groups. We compared FLIPI and FLIPI2 in terms of progression-free survival (PFS) and overall survival (OS). RESULTS: Among the 125 patients, the prognostic value of FLIPI and FLIPI2 was evaluated in 73 patients who fulfilled the criteria of both prognostic models. Risk stratification by FLIPI and FLIPI2 showed significant differences in unfavorable parameters among each risk group, particularly between low- and intermediate-risk groups. The high-risk group b was significantly associated with poor PFS on both FLIPI and FLIPI2 (p < 0.05). However, the OS was significantly different only in the risk groups determined by FLIPI2 (p = 0.042). In a subgroup analysis of patients who received rituximab-containing chemotherapy, the risk stratification of both prognostic models showed a significant impact on PFS, especially in the low-risk group. CONCLUSIONS: FLIPI and FLIPI2 are appropriate prognostic models in Korean FL patients, especially for discriminating low-risk patients from intermediate- and high-risk groups.
Disease-Free Survival
;
Drug Therapy*
;
Humans
;
Lymphoma, Follicular*
;
Prognosis