No abstract available.
Hemodynamics* ; Hepatocytes* ; Ischemia* ; Liver* ; Urokinase-Type Plasminogen Activator* ; Verapamil*

Isometric tension was recorded in uterine arterial ring preparation contracted by potassium (60 mM) and norepinephrine(1.8 X 10(-7) M). With pretreatment of various concentrations of nifedipine(2.9 x 10(-9) ~2.9 X10(-7) M) and verapamil(2.2 X 10(-7) -2.2 X 10(-5) M), the relaxation was dose-dependent and inhibitory effects of both agents were more marked on the potassium than norepinephrine-evoked contraction. After immersion of the arterial preparation in calcium-free solution, the potassium-evoked contraction was decreased to 21+/-4.1%(mean+/-SEM) of the response in normal Krebs solution and norepinephrine-evoked contraction to 26+/-3.8%. The responses to both agents were completely restored when the calcium concentration was increased to 4.0 mM. Pretreated nifedipine(2.9 x 10(-7) M) in calcium-free solution depressed the potassium-evoked contraction to 7.3+/-1.6% and norepinephrine-evoked contraction to 12+/-3.7%. In addition of calcium(0-4.0mM), the potassium-evoked contraction increased to 30+/-4.6% and that by norepinephrine to 45+/-5.4%. Pretreated verapamil(2.2 X 10(-5) M) in calcium-free solution depressed the potassium-evoked contraction to 14+/-3.6% and norepinephrine-evoked contraction to 18+/-3.3%. In addition of calcium(0-4.0mM), the potassium-evoked contraction increased to 41+/-4.2% and that by norepinephrine to 57+/-4.7%. It was concluded that nifedipine and verapamil relaxed KC1 contracted ring in the presence of external calcium and relaxed norepinephrine contracted ring in both the presence and absence of external calcium. These findings suggest that calcium antagonists interfere with the release of calcium from intracellular sites as well as with the slow inward current of calcium.
Calcium ; Humans* ; Immersion ; Nifedipine* ; Norepinephrine ; Potassium ; Relaxation ; Uterine Artery* ; Verapamil*

A retrospective analysis on the MRI findings of 24 pathologically contirmed craniopharyngiomas was performed with emphasis on signal intensity of cystic portion and its chemical components. Axial, coronal MR scans were ontained, and in six patients, post-contrast study was done with Gadopentetate Dimeglumine(Gd-DTPA). In 14 cystic portions were aspirated to correlate the amount of chemical components such as calcium, glucose, protein, cholesterol, lipid, and iron with the signal intensity GT scans were also performed in 20 patients. In eight cases, tumors extended to subfrontal, third ventricle, and retrosellar area the extensions were well demonstrated in sagittal and coronal images. The signal intensity of cystic lesions on T2WI were variable but tended to be higher in high protein and iron contents. Calcifications were present in 20 cases and out of these, MRI detected calcification as very low signal intensity or signal void on T1WI and T2WI in 12 cases. Multiplanar imaging of MRI was very useful for the evaluation of tumor extension and the signal intensity of the cystic lesion tended to be higher on T1WI when the contents had high protein or iron components.
Calcium ; Cholesterol ; Craniopharyngioma* ; Glucose ; Humans ; Iron ; Magnetic Resonance Imaging ; Retrospective Studies ; Third Ventricle

No abstract available.
Dilatation* ; Kidney* ; Pelvis*

BACKGROUND: Glomus tumor is a benign neoplasm derived from the normal glomus body. This tumor includes the following types; solitary, multiple, proliferating, and acral arteriovenous. Histologically, it was subdivided into solid type, glomangioma, and glomangiomyoma. Its malignant counterpart - glomangiosarcoma - was reported. OBJECTIVES: The purposes of this study were aimed to evaluate the clinical and pathologic presentations of glomus tumor. METHODS: A total of 17 patients who have been diagnosed with glomus tumor by histopathologic examination were reviewed. RESULTS: Male patients were ten and female patients were seven. The age of the onset of glomus tumor varied from birth to 61 years. The location of tumors were as follows: arm (7 cases), finger (6 cases), back (2 cases), leg (1 case), foot (1 case). The digit was the most common site for female patients. Clinical manifestations showed solitary bluish papule (6 cases), subcutaneous nodule (5 cases), nail discoloration (3 cases), nail dystrophy (1 case), bluish plaque (1 case). One patient had no specific lesion but tenderness. The most characteristic symptom was pain in 15 (88.2%) of the 17 patients, and the other two patients had no symptom. Two asymptomatic lesions were located on the forearm and histopathologically showed glomangioma. Histopathologically, 13 (76.5%) of the 17 patients classified as solid type, and 4 (23.5%) the glomangioma variety. CONCLUSION: Glomus tumors were most commonly seen as a painful nodule on the upper extremity and especially female patients showed predilection for subungual location. We speculate that multiple, mild symptomatic lesions might be a tendency to be glomangioma.
Arm ; Female ; Fingers ; Foot ; Forearm ; Glomus Tumor ; Humans ; Leg ; Male ; Parturition ; Upper Extremity

PURPOSE: To assess the midterm results of the hydroxyapatite hip system with acetabular cups, with particular emphasis upon cup wear and loosening, using a computer assisted-3 dimensional technique. MATERIALS AND METHODS: From March 1992 to December 1996, 52 patients (61 hips) were available for inclusion in this study after an average duration of follow up of 6 years and 4 months. Clinical evaluation was performed using the Harris hip scoring system. Initial postoperative and long term follow up films were digitized, and 2 dimensional linear and 3 dimensional wear was measured by using a computer assisted-3 dimensional technique. Acetabular bone changes are described using previous published methods. RESULTS: An analysis of the clinical results showed a mean Harris hip score of 47.2 points preoperatively and 89.8 points at the final visit. The mean polyethylene 3D-linear wear rate was 0.26 mm/year and mean volumetric wear rate was 105.9 mm3/year. In 16 hips (26.2%) the linear wear rate was more than 0.3 mm/year (0.30-0.74 mm/year). Osteolytic changes of the acetabulum were recorded in 51% around acetabular cups, in which considerable wear of the acetabular polyethylene was evident by the five-year radiographic findings. CONCLUSION: Midterm results of hydroxyapatite coated acetabular cups were disappointing in terms of acetabular cup and liner wear, despite early accelerated bone remodeling by hydroxyapatite and excellent early clinical results.
Acetabulum* ; Arthroplasty, Replacement, Hip ; Bone Remodeling ; Durapatite* ; Follow-Up Studies ; Hip* ; Humans ; Osteolysis* ; Polyethylene

PURPOSE: In comminuted intertrochanteric fractures, various operative options have been introduced. The purpose of this study was to determine whether there were differences in clinical and radiologic outcomes among bipolar hemiarthroplasty (BH), compression hip screw (CHS) and proximal femur nail antirotation (PFNA) in treating comminuted intertrochanteric fractures (AO/OTA classification, A2 [22, 23]) MATERIALS AND METHODS: We retrospectively evaluated total 150 patients (BH, 50; CHS, 50; PFNA, 50) who were operated due to intertrochanteric fractures from March 2010 to December 2012 and were older than 65 years at the time of surgery. We compared these three groups for radiologic and clinical outcomes at 12 months postoperatively, including Harris Hip Score, mobility (Koval stage), visual analogue scale and radiologic limb length discrepancy (shortening). RESULTS: There was no statistical significance among three groups in clinical outcomes including Harris Hip Score, mobility (Koval stage), visual analogue scale. However, there was significant differences in radiologic limb discrepancy in plain radiographs at 12 months postoperatively (radiologic shortening: BH, 2.3 mm; CHS, 5.1 mm; PFNA, 3.0 mm; P=0.000). CONCLUSION: There were no clinical differences among BH, PFNA, and CHS in this study. However, notable limb length shortening could be originated during fracture healing in osteosynthesis, compared to arthroplasty (BH Arthroplasty ; Classification ; Extremities ; Femur* ; Fracture Healing ; Hemiarthroplasty* ; Hip Fractures* ; Hip* ; Humans ; Retrospective Studies

STATEMENT OF PROBLEM: Mechanisms of tissue-implant interaction and the effect of the implant surface on the behavior of cells has not yet been clarified. PURPOSE: This study was performed to investigate the tissue reaction to the titanium alloy submerged into rat peritoneum in vivo. MATERIALS AND METHODS: Titanium alloys (titanium-13Zirconium-6Niobium) were inserted inside the peritoneal cavity of Sprague Dawley rats. After 3 months, the tissue formed around the inserted titanium alloys were examined with a light-microscope. Tissue reaction around the material was analyzed by confocal microscopy to evaluate their biocompatibility in a living body. RESULTS: In in vivo study, foreign body type multinucleated giant cells were found in the fibrous tissue formed as a reaction to the foreign material (4 in 20 cases), but the inflammatory reaction was very weak. After experiment, the contaminants of biomaterials was removed from living tissue. In confocal microscopy, we observed that the staining of vinculin and actin showed mixed appearance. In a few cases, we found that the staining of vinculin and beta-catenin showed the prominent appearance. CONCLUSION: We found that titanium-13Zirconium-6Niobium alloy was an excellent biomaterial.
Actins ; Alloys* ; Animals ; beta Catenin ; Biocompatible Materials ; Foreign Bodies ; Giant Cells ; Microscopy, Confocal ; Peritoneal Cavity ; Peritoneum ; Rats ; Rats, Sprague-Dawley ; Titanium* ; Vinculin

Nonsystemic vasculitic neuropathy (NSVN) is a localized vasculitis confined to the peripheral nerves. Absence of systemic manifestations frequently leads to mis- or under diagnosis without the aid of pathologic study. NSVN may present typically with multiple mononeuropathies or less commonly with a sensorimotor polyneuropathy. We report two cases of NSVN presenting with acute severe painful neuropathy. Sural nerve pathology showed unequivocal vasculitis. High dose corticosteroid therapy was effective in controlling the pain. NSVN should be considered as a treatable cause of acute painful neuropathy.
Acute Pain* ; Diagnosis ; Mononeuropathies ; Pathology ; Peripheral Nerves ; Polyneuropathies ; Sural Nerve ; Vasculitis

The incidence of Giant Condyloma Acuminata of the penis is unknown but considered rare. They are similar to condyloma acuminata, histologically and grossly similar to squamous cell ca. Most authorists consider that they get the real possibility of malignant change and they had been first described by Buschke in the German literatures in l896 as a variant of condyloma acuminata. A case of malignancy of the penis which has apparently transformed from Giant Condyloma Acuminata of the penis is herein presented with review of related literatures.
Incidence ; Male ; Penile Neoplasms* ; Penis