Purpose:To study the malignant probability of a solitary thyroid nodule,probable risk factor,the status of B-mode ultrasonography,computed tomography,fine needle aspiration and frozen section in the operation and other adjuvant examination in the diagnosis.Methods:In the retrospective analysis of 902 cases of solitary thyroid nodule treated by surger- y and diagnosed by pathology in the Cancer Hospital of Fudan University from March 1998 to May 2001,we analyzed the value of B-mode ultrasonography,computed tomography,fine needle aspiration and frozen section in the operation and com- pared them with the final pathological conclusion.Results:This disease occurred mostly in 20～50 years old women,while the malignant nodules occurred more frequently in men(P50 years) (P50 years) is a risk factor.B-mode ultrasonography can be used as routine preoperative examination.CT is valuable in the cases with metastasis to neck lymph nodules.With FNA the pathological diagnosis of the nodule suspected to be malignant can be made preoperatively.

Diagnostic Errors ; Encephalocele ; diagnosis ; Female ; Humans ; Meningocele ; diagnosis ; Middle Aged ; Mucocele ; diagnosis ; Sphenoid Sinus ; pathology

Altitude ; Animals ; Astrocytes ; cytology ; Brain ; cytology ; Hypoxia ; Male ; Microglia ; cytology ; Rats ; Rats, Wistar

Environmental Monitoring ; Humans ; Occupational Diseases ; etiology ; prevention & control ; Occupational Health Services ; organization & administration ; Population Surveillance ; methods ; Risk Assessment ; Surveys and Questionnaires ; standards

To evaluate the automated segmentation algorithm for detection of intra - retinal layers to process images obtained from ultra- high resolution optical coherence tomography ( OCT ) . Graph theory and the shortest path search based on dynamic programming were applied to automatically segment the 8 intra - retinal layers. We experimentally verified the accuracy and reliability of the algorithm. The results showed that the intra-retinal layer boundaries between automated and manual segmentations matched well. The algorithm successfully segmented the intra- retinal layers in glaucoma, high myopia, and retinitis pigmentosa patients. The proposed automatic segmentation for intra-retinal layers provides a promising tool for quantitative analysis in clinical diagnosis and treatment.

OBJECTIVETo explore the scavenging action of tenuigenin (TEN) on intracerebral amyloid β protein (Aβ) aggregation and the abnormal phosphorylated tau protein and its mechanism in Alzheimer's disease (AD) rats' brain.

METHODSAβ1-40 was injected into the right CA1 region hippocampus to establish the AD model. Successfully modeled rats were divided into the model group, the low, middle, high TEN group. Rats were administered with TEN (18.5, 37.0, 74.0 mg/kg) by gastrogavage. Besides, a sham-operation group was set up. Expression levels of Aβ1-40 and Tau p-Ser262 were detected by immunohistochemistry. Expression levels of ubiquitin (Ub) and Ub-protein ligase E3 were measured by Western blotting.The content of 26S proteasome was detected by ELISA.

RESULTSImmunohistochemical results showed that the number of Aβ and Tau p-Ser262 positively reacted neurons significantly increased in model group, when compared with the sham-operation group (P < 0.01). Results of Western blot showed expression levels of ubiquitinated protein were up-regulated and those of Ub-protein ligase E3 were down-regulated in the model group (P < 0.01). ELISA results showed that the content of 26S proteasome significantly decreased in AD rats' brain (P < 0.01). Compared with the model group, expression levels of Aβ1-40, Tau p-Ser262, and Ub significantly decreased; expression levels of Ub-protein ligase E3 apparently increased; the content of 26S proteasome significantly increased in each TEN treatment group (P < 0.05, P < 0.01). Best effect was shown in 37.0 mg/kg and 74.0 mg/kg TEN groups.

CONCLUSIONSUb proteasome pathway (UPP) participated in the occurrence of AD. TEN could obviously reduce intracere- bral Aβ1-40 accumulation and abnormal tau phosphorylation.

Alzheimer Disease ; metabolism ; Amyloid beta-Peptides ; Animals ; Drugs, Chinese Herbal ; pharmacology ; Hippocampus ; metabolism ; Neurons ; metabolism ; Phosphorylation ; Proteasome Endopeptidase Complex ; metabolism ; Rats ; Ubiquitin-Protein Ligases ; metabolism ; Ubiquitins

Objective To analyze the drug resistance profile and risk factors for extensively drug resistant tuberculosis (XDR-TB) patients. Methods XDR-TB cases were identified by sixteen anti-TB drug susceptibility kits among inpatients with a diagnosis of laboratory-confirmed mycobacterium tuberculosis. Single-factor and Logistic analysis were used to analyze the risk factors for drug resistant of the first and second-line anti-TB drugs in XDR-TB patients. Results Resistant rate of rifampin, isoniazid and rifampicin were 100%, Resistant rate of streptomycin, rifampicin and dean, b sulfur isoniazid, levofloxacin and capreomycin were from 90% to 100%, resistant rate of kanamycin and amino salicylic acid were from 70% to 80%, resistant rate of amikacin from 60% to 70%, resistant rate of sulfur isoniazid was from 50% to 60%, resistant rate of ethambutol and moxifloxacin were from 40% to 50%, resistant rate of clarithromycin was from 10% to 20%, resistant rate of clofazimine 5.2%. 92.1% of XDR-TB patients were resistant to more than 10 anti-TB drugs, and the least of the patients were resistant to 6 anti-TB drugs.Logistic regression analysis showed the risk factors for XDR-TB first-and second-line anti-tb drugs included age ［20-40 year (OR=6.318, 95% CI:1.204-33.15, P=0.029;40-60 year (OR=4.772, 95% CI:0.973-23.392, P=0.054); 60 year (OR=41.366, 95% CI:2.909-588.265, P=0.006)］and anti-TB treatment history was retreatment(OR=28.013, 95% CI:3.357-233.766, P=0.002). Conclusions XDR-TB patients have serious drug resistance, but there were some drug treatable drug resistance types, and the risk factors mainly come from age and anti-TB treatment history.

OBJECTIVETo investigate the effects, side-effects and security of bupivacaine, ropivacaine combined with fentanyl in postoperative continuous epidural analgesia.

METHODSA total of 1 600 postoperative continuous epidural analgesia patients receiving different agents in SICU were divided into two groups: 0.1% bupivacaine +5 microg/ml fentanyl group (group B, n = 920) and 0.2% ropivacaine +2 microg/ml fentanyl group (group R, n = 680). The effects (visual analog-scale score and content to analgesia), side effects were analyzed retrospectively in the two groups.

RESULTSCompared with group B, patients in group R had higher analgesia contentment (P < 0.05), but no difference in visual analog-scale score was found in the two groups. The incidences of urinary retention, nausea and vomiting, skin itching in group B were significantly higher than those in group R (P < 0.05). In each group, patients over sixty had higher ratio of hypotension than those under sixty (P < 0.05); The female patients had a higher incidence of nausea and vomiting than male patients (P < 0.05); The incidence of debility and numbness of lower limbs in patients with lumbar segments epidural analgesia was higher than those with thoracic analgesia (P < 0.05).

CONCLUSIONS0.1% bupivacaine +5 microg/ml fentanyl and 0.2% ropivacaine +2 microg/ml fentanyl can provide adequate pain relief in postoperative continuous epidural analgesia, and 0.2% ropivacaine +2 microg/ml fentanyl comes with less side effects. The incidence of complication is related with analgesics, age, gender and the position of epidural puncture.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Amides ; administration & dosage ; adverse effects ; Analgesia, Epidural ; adverse effects ; methods ; Analgesia, Obstetrical ; adverse effects ; methods ; Analgesics, Opioid ; administration & dosage ; adverse effects ; Anesthetics, Local ; administration & dosage ; adverse effects ; Bupivacaine ; administration & dosage ; adverse effects ; Female ; Fentanyl ; administration & dosage ; adverse effects ; Humans ; Male ; Middle Aged ; Pain, Postoperative ; prevention & control ; Retrospective Studies

Drug Design ; Genomics ; methods ; Oligonucleotide Array Sequence Analysis ; Protein Array Analysis ; Proteomics ; Technology, Pharmaceutical

In July 1997, a strain (GB30) of virus was isolated from 60 samples of brain tissues of Murina aurata (Chiroptera: Vespertilionidae) co llec ted in Gengma county, Yunnan province, China. Isolation of virus was negative fr om 4 samples of brain tissues of Rousettus leschenaulti (Chiroptera: Pteropo did ae) collected in Gengma. GB30 virus strain could regularly cause illness and dea th in suckling mice, produced evident CPE in BHK21 cells. It agglutinated red b lood cells of dove at pH5.75～7.4. This virus has been identified serologically by hemagglutination inhibition and immunofluorescent tests using Japanese enceph alitis (JE), dengue (DEN) type 1,2,3,4, and chikungunya (CHIK) viruses monoclona l antibodies, and JE and sindbis (SIN) viruses immune sera. It showed specific r eaction to JE virus only and no reaction with DEN 1～4, CHIK and SIN viruses. Th erefore it can be identified as JE virus. This is the first report on the isolat ion of JE virus from Murina aurata. The results showed that bats are conside red as the reservoir and amplifier host of JE virus transmission in nature.