1.Antinociceptive Effects of Amiloride and Benzamil in Neuropathic Pain Model Rats.
Seongtae JEONG ; Seong Heon LEE ; Yeo Ok KIM ; Myung Ha YOON
Journal of Korean Medical Science 2013;28(8):1238-1243
Amiloride and benzamil showed antinocicepitve effects in several pain models through the inhibition of acid sensing ion channels (ASICs). However, their role in neuropathic pain has not been investigated. In this study, we investigated the effect of the intrathecal amiloride and benzamil in neuropathic pain model, and also examined the role of ASICs on modulation of neuropathic pain. Neuropathic pain was induced by L4-5 spinal nerve ligation in male Sprague-Dawley rats weighing 100-120 g, and intrathecal catheterization was performed for drug administration. The effects of amiloride and benzamil were measured by the paw-withdrawal threshold to a mechanical stimulus using the up and down method. The expression of ASICs in the spinal cord dorsal horn was also analyzed by RT-PCR. Intrathecal amiloride and benzamil significantly increased the paw withdrawal threshold in spinal nerve-ligated rats (87%+/-12% and 76%+/-14%, P=0.007 and 0.012 vs vehicle, respectively). Spinal nerve ligation increased the expression of ASIC3 in the spinal cord dorsal horn (P=0.01), and this increase was inhibited by both amiloride and benzamil (P<0.001 in both). In conclusion, intrathecal amiloride and benzamil display antinociceptive effects in the rat spinal nerve ligation model suggesting they may present an alternative pharmacological tool in the management of neuropathic pain at the spinal level.
Acid Sensing Ion Channels/genetics/metabolism
;
Amiloride/*analogs & derivatives/pharmacology/*therapeutic use
;
Analgesics/pharmacology/*therapeutic use
;
Animals
;
Disease Models, Animal
;
Male
;
Neuralgia/*drug therapy
;
RNA, Messenger/metabolism
;
Rats
;
Rats, Sprague-Dawley
;
Reverse Transcriptase Polymerase Chain Reaction
;
Spinal Cord/metabolism
;
Transcription, Genetic/drug effects
2.Ceramic-on-Ceramic Bearing Total Hip Arthroplasty in Young Patients with Osteonecrosis of Femoral Head.
Shin Yoon KIM ; Yong Gu KIM ; Jun Young YEO ; Do Heon KIM ; Joo Chul IHN
The Journal of the Korean Orthopaedic Association 2004;39(3):233-238
PURPOSE: To evaluate the short-term clinical and radiographic results associated with use of the ceramicon-ceramic articulation uncemented total hip arthroplasty (THA) in patients less than fifty years old with osteonecrosis of femoral head. MATERIALS AND METHODS: Sixty-eight THAs with use of the ceramic-on-ceramic articulation were performed in fifty-nine patients who were younger than fifty years old with the implantation of an uncemented plasma coated Plasma cup and Bicontact stem. All patients were available for complete clinical and radiographic analysis after a mean duration of a follow-up of 31.6 months (range; 24-50 months). The average age of the patients at the index operation was 39.4 years (range; 16-49 years). Preoperative diagnosis was osteonecrosis of femoral head in all hips. The causative factors were idiopathic in twenty-one hips; alcohol abuse in twenty-eight hips, steroid in eleven hips, and posttraumatic in eight hips. Clinical evaluation was done by Harris Hip score (HHS). Radiographic evaluation was done in terms of stability of components and prevalence of osteolysis. RESULTS: The mean preoperative HHS of 61 points improved to 95 points at the time of the final follow-up. Excellent results were found in 57 hips (84%), good results were 11 hips (16%). No acetabular or femoral components were loosened radiographically. There was no evidence of osteolysis. There were two postoperative dislocation, one intraoperative femoral fissuring, and one transient sciatic nerve palsy. CONCLUSION: Short-term clinical and radiographic results associated with use of the ceramic-on-ceramic articulation uncemented THA in patients less than fifty years old with osteonecrosis of femoral head were excellent. However, longer-term follow up is needed.
Acetabulum
;
Alcoholism
;
Arthroplasty, Replacement, Hip*
;
Diagnosis
;
Dislocations
;
Follow-Up Studies
;
Head*
;
Hip
;
Humans
;
Osteolysis
;
Osteonecrosis*
;
Plasma
;
Prevalence
;
Sciatic Neuropathy
3.A Comparison of Efficacy and Safety of Non-steroidal Anti-inflammatory Drugs versus Acetaminophen in the Treatment of Episodic Tension-type Headache: A Meta-analysis of Randomized Placebo-controlled Trial Studies.
Yeo Jung YOON ; Ju Heon KIM ; Soo Young KIM ; In Hong HWANG ; Mi Ra KIM
Korean Journal of Family Medicine 2012;33(5):262-271
BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) and acetaminophen are widely used in the treatment of tension headache. The objective of this study was to evaluate and compare the efficacy and safety of single doses of acetaminophen and NSAIDs using meta-analysis of randomized placebo-controlled trial studies. METHODS: We searched MEDLINE, EMBASE, CINAHL, Cochrane, KMbase, KoreaMed, RiCH, National Assembly Library, Riss4u, and DBPIA for studies released through 27th July 2010. Two authors independently extracted the data. To assess the risk of bias, the Cochrane Collaborations risk of bias tool was used. Review Manager 5.0 was used for statistics. RESULTS: We identified 6 studies. The relative benefit of the NSAIDs group compared to the acetaminophen group for participants with at least 50% pain relief was 1.18 (95% confidence interval [CI], 0.99 to 1.39; I2 = 85%). We did subgroup analysis based on allocation concealment versus non-allocation concealment, and low-dose NSAIDs versus high-dose NSAIDs. The relative benefit of the low-dose NSAIDs subgroup to the acetaminophen group was 0.98 (95% CI, 0.91 to 1.06; I2 = 0%). However, the heterogeneity of other subgroup analysis was not settled. The relative risk for using rescue medication of the NSAIDs group compared to the acetaminophen group was 0.84 (95% CI, 0.64 to 1.12; I2 = 47%). The relative risk for adverse events was 1.31(95% CI, 0.96 to 1.80; I2 = 0%). CONCLUSION: In this meta-analysis, there was no difference between low-dose NSAIDs and acetaminophen in the efficacy of the treatment for tension type headache. The results suggested that high-dose NSAIDs have more effect but also have more adverse events. The balance of benefit and harm needs to be considered when using high-dose NSAIDs for tension headache.
Acetaminophen
;
Anti-Inflammatory Agents, Non-Steroidal
;
Bias (Epidemiology)
;
Cooperative Behavior
;
Population Characteristics
;
Tension-Type Headache
4.The Role of Opioid Receptor on the Analgesic Action of Intrathecal Sildenafil in Rats.
Hyung Gon LEE ; Chang Young JEONG ; Myung Ha YOON ; Woong Mo KIM ; Seung Heon SHIN ; Yeo Ok KIM ; Lan Ji HUANG ; Jin Hua CUI
The Korean Journal of Pain 2007;20(1):21-25
BACKGROUND: Intrathecal sildenafil has produced antinociception by increasing the cGMP through inhibition of phosphodiesterase 5. Spinal opioid receptor has been reported to be involved in the modulation of nociceptive transmission. The aim of this study was to examine the role of opioid receptor in the effect of sildenafil on the nociception evoked by formalin injection. METHODS: Rats were implanted with lumbar intrathecal catheters. Formalin testing was used as a nociceptive model. Formalin-induced nociceptive behavior (flinching response) was observed. To clarify the role of the opioid receptor for the analgesic action of sildenafil, naloxone was administered intrathecally 10 min before sildenafil delivery, and formalin was then injected 10 min later. RESULTS: Intrathecal sildenafil produced dose-dependent suppression of flinches in both phases during the formalin test. Intrathecal naloxone reversed the analgesic effect of sildenafil in both phases. CONCLUSIONS: Sildenafil is active against the nociceptive state that's evoked by a formalin stimulus, and the opioid receptor is involved in the analgesic action of sildenafil at thespinal level.
Analgesia
;
Animals
;
Catheters
;
Cyclic Nucleotide Phosphodiesterases, Type 5
;
Formaldehyde
;
Naloxone
;
Nociception
;
Pain Measurement
;
Rats*
;
Receptors, Opioid*
;
Sildenafil Citrate
5.Upper Extremity Fractures in Children: Prospective Epidemiological Study of Tertiary Medical Institutes.
Soon Hyuck LEE ; Woong Kyo JEONG ; Hyun woo KIM ; Kwang Soon SONG ; Hyun Dae SHIN ; Jong Sup SHIM ; Yeo Heon YOON ; Tae Joon CHO
The Journal of the Korean Orthopaedic Association 2007;42(2):270-275
PURPOSE: To investigate the general epidemiologic features of upper extremity fractures in children. MATERIALS AND METHODS: The records of the 589 in-patient children treated for upper extremity fractures over a 1-year period at 7 different hospitals were collected prospectively and analyzed. The severity of trauma was classified as slight, moderate or severe. This study examined the incidence of various upper extremity fractures and performed statistical analysis according to the epidemiologic parameters including age, gender and season. RESULTS: The average age of the children was 7.8 years. The average age of boys (8.5 years) was older than girls (6.4 years). The majority of fractures occurred at between 4 and 7 years of age (36%). The male to female ratio was approximately 2:1. The male predominance increased with age and increased dramatically in the age group, 12-16 years (5.8:1). The left side was injured more frequently (56%), and there was no difference between genders. The occurrence of fractures varied with the seasons with peaks in May (14.1%) and August (12.2%), and it was closely related to the temperature (r=0.778). The most common fractures were the supracondylar fractures of the humerus (32.6%), followed by distal radius fractures (18.2%), lateral condylar fractures (15.8%), radio-ulna shaft fractures (8%), clavicle fractures (4.2%), proximal humerus fractures (2.6%) and humerus shaft fractures (2.4%). Ninety seven percent of fractures were caused by a slight and moderate trauma. Fifty four percent of injured children underwent surgery, and 84% of operations were performed on the fractures around the elbow. CONCLUSION: This study examined the epidemiologic features of the upper extremity fractures in children.
Child
;
Male
;
Female
;
Humans
;
Incidence
6.Hemodialysis Using Heparin Bound Hemophan Hemodialysis in ESRD Patients at High Risk for Bleeding: A Seven-Year Experience.
Su Jin YOON ; Beom KIM ; Hyun Hee LEE ; Young Ki LEE ; Woo Heon KANG ; Jung Ah KIM ; Bang Hoon LEE ; Ho Myoung YEO ; Young Hwan LIM ; Hyun Jeong BAEK ; Wooseong HUH ; Kyu Beck LEE ; Yoon Ha LEE ; Dae Joong KIM ; Yoon Goo KIM ; Ha Young OH
Korean Journal of Nephrology 2003;22(4):389-396
OBJECTIVE: Positively charged N, N-diethyl-aminoehtyl groups on Hemophan enable negative charged heparin to be bound with the dialyzer membrane and hemodialysis using heparin bound Hemophan (HBH- HD) could be a hemodialysis modality in patients at risk of bleeding. We designed simplified heparin binding technique and evaluated the bleeding risk and efficiency of HBH-HD in chronic renal failure patients at risk of bleeding. METHODS: During the period from April 1995 through April 2002, 159 patients at high bleeding risk received 1057 HBH-HD (dialyzer: GFS plus 11, Gambro). The duration of each HBH-HD was standardized to 4 hours at blood-flow rate of 200-250 mL/min. To evaluate safety of HBH-HD, we measured serum heparin concentration (HC) and activated partial thromboplastin time (aPTT) at baseline, 15, 60, 120 minutes and endpoint (240 minutes) (n= 40). To evaluate the dialysis efficiency, HBH-HD and routine hemodialysis with systemic heparinization (R-HD) were compared for total blood compartment volume (TBCV) loss, dialyzer urea clearance (K) and Kt/V in same study group patients (n=20). RESULTS: Clotting of dialyzer necessitating termination of dialysis occurred in 11 (1.0%) out of 1, 057 dialyses at 150 minutes, and clotting requiring change of blood line occurred in 64 dialyses (6.1%) between 150 and 230 minutes. There was a slight increase in the aPTT (mean+/-SD, 49.8+/-10.5 sec) and HC (0.14+/-0.06 U/mL) at 15 min, compared to predialysis levels of 44.3+/-12.9 sec and 0.11+/-0.06 U/ mL, respectively (p>0.05). But no increase in aPTT, HC was observed in measurements at 60 min, 120 min, and at the endpoint. TBCV loss was significantly higher in HBH-HD (mean+/-SD, 17.2+/-9.6%), compared to R-HD (2.8+/-1.2%) (p< 0.0001). However, K and Kt/V value (mean+/-SD) were 136.9+/-14.6 mL/ min and 1.27+/-0.21 in HBH-HD and 137.6+/-18.4 mL/ min and 1.20+/-0.22 in R-HD, showing no significant difference (p>0.05). CONCLUSION: HBH-HD could be a safe and efficient HD technique in patients at high risk of bleeding. Extracorporeal clotting, however, should be observed carefully during HBH-HD.
Dialysis
;
Hemorrhage*
;
Heparin*
;
Humans
;
Kidney Failure, Chronic*
;
Membranes
;
Partial Thromboplastin Time
;
Renal Dialysis*
;
Urea
7.Risk of Coronavirus Disease 2019 Occurrence, Severe Presentation, and Mortality in Patients with Lung Cancer
Bumhee YANG ; Hayoung CHOI ; Sun-Kyung LEE ; Sung Jun CHUNG ; Yoomi YEO ; Yoon Mi SHIN ; Dong Won PARK ; Tai Sun PARK ; Ji-Yong MOON ; Tae-Hyung KIM ; Yun Su SIM ; Ho Joo YOON ; Jang Won SOHN ; Hyun LEE ; Sang-Heon KIM
Cancer Research and Treatment 2021;53(3):678-684
Purpose:
This study aimed to analyze whether patients with lung cancer have a higher susceptibility of coronavirus disease 2019 (COVID-19), severe presentation, and higher mortality than those without lung cancer.
Materials and Methods:
A nationwide cohort of confirmed COVID-19 (n=8,070) between January 1, 2020, and May 30, 2020, and a 1:15 age-, sex-, and residence-matched cohort (n=121,050) were constructed. A nested case-control study was performed to compare the proportion of patients with lung cancer between the COVID-19 cohort and the matched cohort.
Results:
The proportion of patients with lung cancer was significantly higher in the COVID-19 cohort (0.5% [37/8,070]) than in the matched cohort (0.3% [325/121,050]) (p=0.002). The adjusted odds ratio [OR] of having lung cancer was significantly higher in the COVID-19 cohort than in the matched cohort (adjusted OR, 1.51; 95% confidence interval [CI], 1.05 to 2.10). Among patients in the COVID-19 cohort, compared to patients without lung cancer, those with lung cancer were more likely to have severe COVID-19 (54.1% vs. 13.2%, p < 0.001), including mortality (18.9% vs. 2.8%, p < 0.001). The adjusted OR for the occurrence of severe COVID-19 in patients with lung cancer relative to those without lung cancer was 2.24 (95% CI, 1.08 to 4.74).
Conclusion
The risk of COVID-19 occurrence and severe presentation, including mortality, may be higher in patients with lung cancer than in those without lung cancer.
8.Risk of Coronavirus Disease 2019 Occurrence, Severe Presentation, and Mortality in Patients with Lung Cancer
Bumhee YANG ; Hayoung CHOI ; Sun-Kyung LEE ; Sung Jun CHUNG ; Yoomi YEO ; Yoon Mi SHIN ; Dong Won PARK ; Tai Sun PARK ; Ji-Yong MOON ; Tae-Hyung KIM ; Yun Su SIM ; Ho Joo YOON ; Jang Won SOHN ; Hyun LEE ; Sang-Heon KIM
Cancer Research and Treatment 2021;53(3):678-684
Purpose:
This study aimed to analyze whether patients with lung cancer have a higher susceptibility of coronavirus disease 2019 (COVID-19), severe presentation, and higher mortality than those without lung cancer.
Materials and Methods:
A nationwide cohort of confirmed COVID-19 (n=8,070) between January 1, 2020, and May 30, 2020, and a 1:15 age-, sex-, and residence-matched cohort (n=121,050) were constructed. A nested case-control study was performed to compare the proportion of patients with lung cancer between the COVID-19 cohort and the matched cohort.
Results:
The proportion of patients with lung cancer was significantly higher in the COVID-19 cohort (0.5% [37/8,070]) than in the matched cohort (0.3% [325/121,050]) (p=0.002). The adjusted odds ratio [OR] of having lung cancer was significantly higher in the COVID-19 cohort than in the matched cohort (adjusted OR, 1.51; 95% confidence interval [CI], 1.05 to 2.10). Among patients in the COVID-19 cohort, compared to patients without lung cancer, those with lung cancer were more likely to have severe COVID-19 (54.1% vs. 13.2%, p < 0.001), including mortality (18.9% vs. 2.8%, p < 0.001). The adjusted OR for the occurrence of severe COVID-19 in patients with lung cancer relative to those without lung cancer was 2.24 (95% CI, 1.08 to 4.74).
Conclusion
The risk of COVID-19 occurrence and severe presentation, including mortality, may be higher in patients with lung cancer than in those without lung cancer.
9.A Case of Thyroid Papillary Carcinoma With Pulmonary Tumor Embolism.
Jung Gyu LEE ; Dong Shin KWAK ; Jae Ha KIM ; Yoo Mi YEO ; Sang Heon KIM ; Jang Won SOHN ; Ho Joo YOON ; Dong Ho SHIN ; Sung Soo PARK ; Hyun Jung KWAK
Journal of the Korean Geriatrics Society 2013;17(3):143-146
The tumor embolism is defined as tumor cells within the vascular system such as pulmonary artery that is not contiguous with the other metastatic foci. The incidence of tumor embolism varies widely ranging from 3% to 26% among several studies; whereas lung cancer, prostate cancer, colorectal cancer, breast cancer, pancreas cancer are associated with high risks for tumor embolism. However thyroid cancer is rarely associated with tumor embolism. Among the rare cases, tumor embolism was reported as being mostly of follicular carcinoma or undifferentiated carcinoma, but few of papillary carcinoma. We report an unusual presentation that pulmonary tumor embolism from thyroid papillary carcinoma was diagnosed with positron emission tomography/computed tomography (CT) and chest CT.
Breast Neoplasms
;
Carcinoma
;
Carcinoma, Papillary
;
Colorectal Neoplasms
;
Electrons
;
Incidence
;
Lung Neoplasms
;
Neoplastic Cells, Circulating
;
Pancreatic Neoplasms
;
Prostatic Neoplasms
;
Pulmonary Artery
;
Thorax
;
Thyroid Gland
;
Thyroid Neoplasms
10.A Case of Light Chain Deposition Disease without Significant Proteinuria.
Young Hwan LIM ; Yoon Goo KIM ; Hyun Jeong BAEK ; Ho Myoung YEO ; Sung Chul SIN ; Jung Ah KIM ; Woo Heon KANG ; Beom KIM ; Wooseong HUH ; Dae Joong KIM ; Ha Young OH
Korean Journal of Nephrology 2003;22(5):581-585
A 67-year-old male was admitted to the hospital for evaluation of incidentally detected anemia and mild azotemia. Urinalysis showed no abnormal finding and 24 hr urine protein amount was clinically insignificant (270 mg/day). Urine and serum protein electrophoresis were negative for a monoclonal spike. However, urine and serum immunoelectrophoresis demonstrated the presence of monoclonal free kappa light chains. Renal biopsy showed the features of chronic tubulointerstitial disease and on the immunofluorescence studies, kappa light chain was in a linear pattern in basement membranes of glomeruli and tubules. Work-up for multiple myeloma including bone marrow biopsy showed results compatible with multiple myeloma. Treatment was started with vincristine, adriamycin and doxorubicin at monthly interval for three months followed by autologus peripheral blood stem cell transplantation. At follow-up 5 months after autologus peripheral blood stem cell transplantation, the patient is well with a serum creatinine of 2.3-2.6 mg/dL and 24 hr urine protein of 200-350 mg.
Aged
;
Anemia
;
Azotemia
;
Basement Membrane
;
Biopsy
;
Bone Marrow
;
Creatinine
;
Doxorubicin
;
Electrophoresis
;
Fluorescent Antibody Technique
;
Follow-Up Studies
;
Humans
;
Immunoelectrophoresis
;
Male
;
Multiple Myeloma
;
Peripheral Blood Stem Cell Transplantation
;
Proteinuria*
;
Urinalysis
;
Vincristine