Adolescent ; Adult ; Aged ; Aged, 80 and over ; Apolipoproteins E ; blood ; genetics ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Polymorphism, Genetic ; Venous Thromboembolism ; blood ; genetics ; Young Adult ; alpha-2-Antiplasmin ; analysis ; genetics

Animals ; Apoptosis ; Hippocampus ; pathology ; Male ; Neurons ; pathology ; Physical Conditioning, Animal ; Rats ; Rats, Sprague-Dawley ; Stress, Psychological ; pathology

Objective To evaluate the etiologies of children with gastrointestinal bleeding(GIB), and the relationship between the pathological findings and clinical.Methods Gastroscopy or proctoscope was performed in 153 children with GIB. Pathological studies and tests as for helicobactor pylori (Hp) were undertaken.Results Among 153 children,140 cases(91.5 %) had definite diagnosis,including 74 children with upper gastrointestinal bleeding(UGIB) and 66 cases with lower gastrointestinal bleeding(LGIB). Gastric pathologic study was conducted in 56 cases. All patients had chronic superficial gastritis(CSFG). Hp test was positive in 33 patients. There was significant difference in the positive rate of Hp test between patients with gastritis or duodenitis and those with ulcers (P

Two lab-scale expanded granular sludge bed reactors were operated using granular sludge and river sediments as seed sludge respectively, through gradually lowering down the inner pH values, acid-tolerant methanogenic granular sludge with good methanogenic activity were acquired and formed. Two EGSB reactors could be operated steadily under the condition of pH 5.8～6.2, and their volumetric loading rates were about 5.5～7.5 kg COD/(m3/d), the COD removal efficiencies were about 90%. The granular sludges taken from two reactors could maintain relatively higher methanogenic activity under low pH, and the relative activities of the granular could be 51.78% and 55.6% of the value with the condition of pH 7.0 when pH was 5.5. Studies on the diameter distribution, settling velocities, concentrations of different metal elements and microbiological characteristics of these acid-tolerant granular sludges were also conducted.

Adenocarcinoma, Mucinous ; pathology ; Adenoma ; pathology ; Adolescent ; Breast Neoplasms, Male ; metabolism ; pathology ; secretion ; surgery ; Carcinoma ; metabolism ; pathology ; secretion ; surgery ; Diagnosis, Differential ; Humans ; Keratin-18 ; metabolism ; Keratin-8 ; metabolism ; Male ; Mastectomy, Modified Radical ; Proto-Oncogene Proteins c-kit ; metabolism ; S100 Proteins ; metabolism

OBJECTIVETo investigate biological transport of minocycline by human periodontal ligament fibroblasts (HPDLF). To verify the hypothesis of delivering medicine to periodontium and the whole body through the root canal.

METHODSHPDLF and MC3T3-E1 cells were incubated in minocycline solutions. The intracellular antibiotics contents were measured by high performance liquid chromatography (HPLC) and the cell total protein was measured by Bradford protein assay.

RESULTSHPLC was an accurate, sensitive method for measurement of the intracellular minocycline. The incubation time and cell property had significant effect on the intracellular minocycline contents (P< 0.01). The intracellular contents increased with extracellular concentration.

CONCLUSIONMinocycline can be transported by HPDLF. The transport is concentration-dependent, time-dependent and cell specific.

Anti-Bacterial Agents ; Biological Transport ; Cells, Cultured ; Fibroblasts ; Humans ; Minocycline ; Periodontal Ligament

The dual energy CT (DECT) technology has been recently employed in the form of two X-ray sources of different energies to enhance the contrast between adjacent structures. Its use in the cardiac arena has been widely highlighted due to the higher temporal resolution. However, it may also be used in the craniocervical and peripheral vasculature for better differentiation between contrast-enhanced vascular lumina and calcified plaques, in the characterisation of ureteric stones, and in the evaluation of hepatic lesions. The objective of this paper is to revisit DECT physics, review the literature and discuss its use in CT neuroangiography with case illustrations from our institution, and impact on dose savings.
Cerebral Angiography ; Constriction, Pathologic ; diagnosis ; Humans ; Image Interpretation, Computer-Assisted ; Intracranial Aneurysm ; diagnosis ; Radiation Dosage ; Radiography, Dual-Energy Scanned Projection ; methods ; Review Literature as Topic ; Tomography, X-Ray Computed ; methods

OBJECTIVETo investigate biological transport of tetracycline hydrochloride by human periodontal ligament fibroblasts (HPDLF) for verifying the hypothesis of delivering medicine to the periodontium and whole body through the root canal.

METHODSHPDLF and MC3T3-E1 cells were incubated in antibiotics solutions. The intracellular antibiotics contents were measured by high performance liquid chromatography (HPLC) and the cell total protein was measured by bradford protein assay.

RESULTSThe intracellular contents increased with incubation time. The extracellular medicine concentration had effect on the intracellular contents.

CONCLUSIONSTetracycline hydrochloride can be transported into HPDLF with incubation and this transport is time-dependent and concentration-dependent.

Anti-Bacterial Agents ; pharmacokinetics ; Biological Transport ; Cells, Cultured ; Fibroblasts ; metabolism ; Humans ; Periodontal Ligament ; metabolism ; Tetracycline ; pharmacokinetics

OBJECTIVETo construct the co-culture models of salivarya denoid cystic carcinoma (SACC) cells and dorsal root ganglia (DRG) of chickens and investigate the promotive effects of SACC on neural tissue.

METHODSGlass-base culture dish was adopted to construct co-culture model of SACC-83 cells and DRG. SACC-83 cells were seeded in the medium pore with DRG around them. Outgrowth of neuronal processes was observed. Then DRG was cultured in the conditioned medium of SACC-83, with the groups of conditioned medium of MC3T3-E1 and HGF, the group of cell lysis buffer, the groups of serum-free medium and serum-plus medium as the controls. Outgrowth of neuronal processes was also recorded and compared with control groups.

RESULTSIn the co-culture model of tumor and neuronal tissue, SACC-83 cells produced a suitable microenvironment in which neuronal processes remarkably grow. Neuronal processes of most DRG displayed growth tendency toward SACC. The group of conditioned medium from SACC-83 manifested obvious promotive effects on DRG.

CONCLUSIONSCo-culture model of tumor and neuronal tissue was successfully constructed, with which the promotive effects of tumor on outgrowth of neuronal processes could be observed. So hypothesized that SACC could secrete some neurotrophic factors to guide peripheral nerves gemmating and to trigger the cascade of the neural invasion in succession.

Animals ; Carcinoma, Adenoid Cystic ; pathology ; Cell Line ; Cell Line, Tumor ; Chickens ; Coculture Techniques ; Culture Media ; Ganglia, Spinal ; growth & development ; Gingiva ; cytology ; Humans ; Osteoblasts ; cytology ; Salivary Gland Neoplasms ; pathology

Biomarkers ; blood ; Dimethylformamide ; pharmacokinetics ; Humans ; Occupational Exposure