No abstract available.
Urinary Tract Infections* ; Urinary Tract*

A 3D-printed resin crown is a novel option for esthetic crown restoration for primary teeth, which are typically bonded with resin cement. The purpose of this study was to evaluate the bonding ability of a 3D printing resin and compare it with other indirect resin materials for crown fabrication. The shear bond strengths of two 3D printing resin materials, Graphy (GP) and NextDent (NXT), and two indirect resin materials, VIPI Block (VIPI) and MAZIC Duro (MZ), were compared in the study. For all materials, the shear bond strength at the interface between the surface of the resin material and resin cement was measured. The mean shear bond strength values of GP, NXT, MZ, and VIPI were 23.29 ± 3.88, 26.14 ± 4.67, 25.41 ± 4.03, and 18.79 ± 4.26 MPa, respectively. There was no significant difference among the SBSs of GP, NXT and MZ except for VIPI. The result of this study indicates that the 3D printing resin meets the essential requirement for clinical use by showing clinically adequate bond strength.

The decision to initiate dialysis in a patient with progressive renal disease often depends on the physician's assessment of the patient's subjective symptoms of uremia. Decreased residual renal function and malnutrition at the initiation of dialysis is a strong predictor of subsequent increased relative risk of death on dialysis. In this context, to investigate the residual renal function and nutritional parameters of chronic renal failure patients at the initiation of dialysis, 103 patients with chronic renal failure patients were studied. The residual renal function(estimated GFR) was ascertained by measuring simultaneously the 24-h creatinine and urea clearances and averaging the two values and Krt/V. Nutritional parameters were ascertained by measuring the nPNA, %LBM and serum albumin. The mean estimated GFR was 5.97+/-2.88ml/min, the mean weekly Krt/V was 1.24+/-0.80, the mean %LBM was 61.66+/-22.41 and the mean nPNA was 0.89+/-0.30 g/day/kg. We knew that the time of initiation of dialysis, which was based on the manifestation of symptoms of certain patients in conjunction with selected laboratories indices, was delayed than that of NKF- DOQI recommendation. This study suggests that the timely initiation of dialysis is determined by not clinical symptoms and signs but estimated GFR, krt/V and nPNA.
Creatinine ; Dialysis* ; Humans ; Kidney Failure, Chronic* ; Malnutrition ; Serum Albumin ; Urea ; Uremia

In the present study, we aimed to identify the synergistic effects of concurrent treatment of low concentrations of cilostazol and probucol to inhibit the oxidative stress with suppression of inflammatory markers in the cultured human coronary artery endothelial cells (HCAECs). Combination of cilostazol (0.3~3micrometer) with probucol (0.03~0.3micrometer) significantly suppressed TNF-alpha-stimulated NAD(P)H-dependent superoxide, lipopolysaccharide (LPS)-induced intracellular reactive oxygen species (ROS) production and TNF-alpha release in comparison with probucol or cilostazol alone. The combination of cilostazol (0.3~3micrometer) with probucol (0.1~0.3micrometer) inhibited the expression of vascular cell adhesion molecule-1 (VCAM-1) and monocyte chemoattractant protein-1 (MCP-1) more significantly than did the monotherapy with either probucol or cilostazol. In line with these results, combination therapy significantly suppressed monocyte adhesion to endothelial cells. Taken together, it is suggested that the synergistic effectiveness of the combination therapy with cilostazol and probucol may provide a beneficial therapeutic window in preventing atherosclerosis and protecting from cerebral ischemic injury.
Atherosclerosis ; Chemokine CCL2 ; Coronary Vessels ; Endothelial Cells ; Humans ; Monocytes ; Oxidative Stress ; Probucol ; Reactive Oxygen Species ; Superoxides ; Tetrazoles ; Tumor Necrosis Factor-alpha ; Vascular Cell Adhesion Molecule-1

OBJECTIVES: The significance of the coccoid forms of H. pylori is still controversial and the questions of whether these forms are viable and infective or degenerative are still open. We induced conversion from rod to coccoid forms and studied morphological changes and antigenic evolutions during this conversion and, thereby, elucidated the viability of coccoid forms. METHODS: The H. pylori strain (C001) used for Western blotting was isolated from the patient with gastric cancer. The antigenic evolution during coccoid conversion of H. pylori was studied by Western blotting, using different sera from thirty patients known to be culture positive. These sera were used to reveal the total antigens of the strain cultured for 2 days (100% rod) and 15 days (> 99% coccoid). After SDS-PAGE, with 10% separating gel of total antigens (rod and coccoid), transblotting (Trans-Blot electrophoretic cell, Bio-Rad) was taken onto a nitrocellulose membrane (Bio-Rad). Then, the blots, with human sera diluted at 1/100, were developed with color reaction by goat serum anti-human IgG with alkaline phosphatase and BCIP. RESULTS: The antigenic profiles were not changed in 46.7% (14/30 cases) and were changed in 53.3% (16/30 cases) during coccoid conversion. Antigenic fractions changed during coccoid conversion were protein band at 120 kDa and band at 35 kDa, and were not detected in coccus forms. The rest of the profiles were identical between rod and coccoid forms. The protein which disappeared include CagA (120 kDa) and porin, or adhesin (35 kDa). The morphological changes during coccoid conversion were U shaped at day 7, doughnut shaped at day 9 and full coccoid at day 15. CONCLUSIONS: The results showed that coccoid forms of H. pylori retain cellular structures similar to rod form, and some of the antigens (CagA and porin) disappeared during coccoid conversion. Therefore, coccoid form might be viable and represent one of the stages of H. pylori biological cycle.
Adaptation, Physiological ; Antigens, Bacterial/isolation & purification* ; Gastritis/microbiology ; Helicobacter Infections/microbiology ; Helicobacter pylori/ultrastructure* ; Helicobacter pylori/immunology* ; Helicobacter pylori/growth & development ; Human ; Microscopy, Electron ; Stomach Neoplasms/microbiology ; Virulence

PURPOSE: We studied the changes in antibiotic sensitivity to the causative organisms of urinary tract infection (UTI), in order to provide useful information on the choice of adequate drugs in the treatment of UTI. METHODS: We retrospectively analyzed the major causative organisms and their antibiotic sensitivities in 69 patients diagnosed with UTI in the Department of Pediatrics, Samsung Cheil Hospital from 2002 to 2003. RESULTS: The frequency of UTI was the highest in infants younger than 1 year of age (88.4 percent). The male to female ratio was 3.05: 1. Escherichia coli was the most frequent organism (78.3 percent), followed by Klebsiella (116 percent), Pseudomonas (2.9 percent), Proteus (2.9 percent), Enterobacter, Morganelle, and Enterococcus (1.4 percent) in descending order. Antibiotic sensitivity of gram negative organisms was above 90 percent against imipenem, amikacin, 80 percent against aztreonam, cefepime, ceftriaxone, 50-70 percent against gentamicin, trimethoprime-sulfamethoxazole (TMP/SMX), and 23 percent against ampicillin (23.4 percent). CONCLUSION: Antibiotict sensitivity of gram negative organisms was high to amikacin and third generation cephalosporins but low to ampicillin, gentamicin and TMP/SMX. The use of ampicillin or TMP/SMX, as the first choice of the empiric and prophylactic treatment for UTI, should be reconsidered and investigated further.
Amikacin ; Ampicillin ; Aztreonam ; Ceftriaxone ; Cephalosporins ; Child* ; Enterobacter ; Enterococcus ; Escherichia coli ; Female ; Gentamicins ; Humans ; Imipenem ; Infant ; Klebsiella ; Male ; Pediatrics ; Proteus ; Pseudomonas ; Retrospective Studies ; Urinary Tract Infections* ; Urinary Tract*

Infections of the oral and maxillofacial region are one of the most common conditions for which a patient presents to a maxillofacial surgeons. Although these infections can arise from a variety of source, dental disease is the most common etiology. So, odontogenic infection are frequently encountered in the practice of oral and maxillofacial surgery. These infections often respond to antimicrobial chemotherapy or surgical intervention, such as extraction of teeth, incision and drainage through clinical features. But, odontogenic infections have the potential to spread via the fascial spaces in the head and neck region, and, they spread to cavernous sinus, deep musculofascial space and other vital structure. We have undertaken clinical studies on infections in the oral and maxillofacial regions by analyzing retrospectively hospitalized patients in the Department of Oral and Maxillofacial Surgery, Chonbuk National University Hospital past 5 years from 2000 to 2004. And, the patients'age, sex, medical history, causes of the infection, surgical intervention, and other clinical parameters were reviewed. The obtained results were as follows: 1. The most frequent cause of oral and maxillofacial infection was odontogenic. And in the odontogenic cause, dental caries was the most common cause (47.2%). 2. The most common fascial space involved was the submandibular space (15.7%), followed by the buccal space (14.8%). 3. 60.4% of all patients required surgical drainage of the abscess, endodontic treatment or tooth extraction or periodontal treatment with drainage. 4. The most causative organism isolated from the pus culture were streptococcus viridans (53.9%). 5. Underlying medical problems were found in 136 patients (41.9%), the most common being hypertension (27.9%) and diabetes (14.7%).
Abscess ; Cavernous Sinus ; Dental Caries ; Drainage ; Drug Therapy ; Head ; Humans ; Hypertension ; Jeollabuk-do ; Neck ; Retrospective Studies ; Stomatognathic Diseases ; Suppuration ; Surgery, Oral ; Tooth ; Tooth Extraction ; Viridans Streptococci

PURPOSE: Ultrafiltration (UF) failure is one of the most important causes of CAPD withdrawal accounting for up to 20% of CAPD catheter removal. Factors contributing to UF failure are; severe and multiple peritonitis, continuous exposure to nonphysiologic dialysis solution, and use of beta-blockers. We evaluated clinical features of patients with UF failure and assessed the risk factors for UF failure in CAPD patients. METHODS: CAPD data of our institution from Jan 1990 to Dec 2000 were analyzed and a subgroup of 191 patients whose CAPD catheters were removed were collected. Nineteen patients, whose CAPD catheters were removed due to UF failure, were selected from the subgroup as the case group. Seventy-six hospital controls without ultrafiltration failure matched for age, sex, and time of CAPD initiation who were currently maintained on CAPD were selected as the control group. Peritoneal equilibration test (PET) was done within 3 months of initiation of CAPD and at the diagnosis of UF failure, respectively. Peritoneal glucose load was estimated for the first two years. Incidence of peritonitis, accumulated days of peritoneal inflammation (APID), causative organisms of peritonitis, and history of beta-blocker use were evaluated. Peritoneal function was determined by daily net ultrafiltration and mass transfer area coefficient (MTAC) for creatinine. Serum albumin, normalized protein catabolic rate (nPCR) and Kt/Vurea were also evaluated. RESULTS: There was no difference between cases and controls in etiology of ESRD, peritonitis incidence, APID and causative organisms of peritonitis. The case group included more high transporters at the time of the diagnosis of UF failure. The patients with UF failure showed lower nPCR and higher CRP than controls. Serum albumin level was similar at start of CAPD, but decreased faster in UF failure group. Use of beta-blockers and decline in RRF were not different between the two groups. UF fail ure group had higher MTAC for creatinine and more peritoneal glucose load compared to control group. By logistic regression analysis, peritoneal glucose load and increment in glucose load were independent factors associated with UF failure. CONCLUSION: Peritoneal glucose load and increment of glucose load were found to be important risk factors for UF failure in our study. Therefore, various efforts to reduce peritoneal glucose load in CAPD patients are needed for prevention of UF failure.
Case-Control Studies* ; Catheters ; Creatinine ; Diagnosis ; Dialysis ; Glucose ; Humans ; Incidence ; Inflammation ; Kidney Failure, Chronic ; Logistic Models ; Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis ; Risk Factors* ; Serum Albumin ; Ultrafiltration*

We report a case of a 25-month-old girl presented to us for the evaluation of a severe delayed psychomotor development who also has pigmentary abnormalities. Linear and whorled hyperpigmentations following Blaschko's lines were noticed on her entire body except on her face, palms, soles, eyes and mucous membranes, which closely resembled those found in hypomelanosis of Ito, but inversely pigmented. Histologic examination revealed basal layer hyperpigmentation without incontinence of pigment or dermal melanophages. Chromosomal analysis of cultured peripheral leukocytes and fibroblasts from the hyperpigmented and the hypopigmented skin revealed normal female karyotype with no evidence of mosaicism or chimerism. This entity represents a kind of neurocutaneous syndrome-referred to by some authors as linear and whorled nevoid hypermelanosis.
Case Report ; *Child Development ; Child, Preschool ; Female ; Human ; Melanosis/*pathology/*physiopathology ; Nevus/*pathology ; *Psychomotor Performance ; Syndrome

Background: Cervical cancer is the fourth common cancer in women worldwide. The Papanicolau test is the primary screening procedure to detect abnormal cervical cells.Colposcopy is the main procedure for discriminating high-grade cervical lesions. The study aimed at clarifying the discrepancy between cervical cytology and colposcopic biopsy histology as well as confounding factors. Methods: Eligible patients visited thirteen tertiary hospitals for colposcopic biopsy following cervical cytology and human papillomavirus (HPV) genotypes between January and December 2018. Baseline characteristics including age, body mass index (BMI), and parity were collected. Results: In our study, 3,798 eligible patients were included. Mean age of patients was 42.7(19–88) years and mean BMI was 22.5 (16.9–34.1) kg/m2 . The referred cervical cytologic findings consisted of 495 normal, 1,390 atypical squamous cells of undetermined significance, 380 atypical squamous cells cannot exclude high-grade squamous intraepithelial lesion, 792 low-grade squamous intraepithelial lesion, 593 high-grade squamous intraepithelial lesion, 79 atypical glandular cells, 46 squamous cell carcinoma, and 23 adenocarcinoma. HPV-positive findings were found in 3,008 (79.2%) patients and were not detected in 914 (24.1%) cases. The risk of unexpected low-grade lesions from histology was higher in patients > 45 years (odds ratio [OR], 2.137; 95% confidence intervals [CIs], 1.475–3.096). In contrast, the risk of unexpected high-grade lesions from colposcopic biopsy was lower in patients ≥ 45 years (OR, 0.530; 95% CI, 0.367–0.747) and HPV 16/18 infection was higher than other HPV (OR, 1.848; 95% CI, 1.385–2.469). Conclusion Age and HPV genotypes were responsible for the discrepancies between cytology and histology. Precautions should be taken for women over the age of 45 in triage for colposcopy in order to avoid unnecessary testing.