Cell Proliferation ; Cell Transformation, Neoplastic ; Epigenesis, Genetic ; Hodgkin Disease ; genetics ; immunology ; metabolism ; pathology ; Humans ; Immunophenotyping ; NF-kappa B ; metabolism ; Receptor, Notch1 ; metabolism ; Reed-Sternberg Cells ; immunology ; metabolism ; pathology ; Transcription Factor AP-1 ; metabolism

Objective To understand whether long term consumption of purified water can cause lead accumulation and enhance lead toxicity in the rats with chronic lead exposure. Methods 104 male SD weaned rats were randomly divided into eight groups,tap water,purified water,tap water plus lead (lead acetate,Pb2+: 50 mg/L ),purified water plus lead (Pb2+: 50 mg /L),tap water plus lead (Pb2+: 200 mg/L ),purified water plus lead (Pb2+: 200 mg/L),tap water plus lead (Pb2+: 800 mg/L),purified water plus lead (Pb2+: 800 mg/L). All were fed with normal food and kept in the same environmental conditions. The blood samples were collected after 4,6,8,10,24 and 28 weeks of lead exposure. The brain,heart,liver,kidney,bone were sampled at the experimental endpoint and the lead concentration was determined with graphite furnace atomic absorption spectrometric method,zinc protoporphyrin (ZPP) level was measured by using surface fluorescence method. Results At the same lead exposure level,no difference of blood lead level was observed between the groups of drinking purified water and tap water,however,the lead level in the organs tissue,including brain,heart,liver,kidney,bone,was significantly higher in the group drinking purified water compared with drinking tap water. The blood ZPP level in rats drinking purified water was also higher than the rats drinking tap water,the significant difference were occurred at low lead level exposure (P

Acute Disease ; Bone Marrow Neoplasms ; pathology ; Hematologic Neoplasms ; pathology ; Humans ; Immunohistochemistry ; In Situ Hybridization, Fluorescence ; Leukemia ; pathology ; Lymphoma ; pathology ; Myelodysplastic Syndromes ; pathology ; Neoplasm Invasiveness ; Plastic Embedding ; Purpura, Thrombocytopenic, Idiopathic ; pathology

Objective To observe the effects of exercise on serum adiponectin and adiponectin receptor (AdipoR) level in skeletal muscle of insulin-resistant rats. Methods A total of 30 healthy male rats were randomly divided into a control group ( NC, n = 8) and a high-fat group ( HF, n = 22), fed with normal chow and high fat diet, respectively. Eighteen weeks later, the high-fat group was randomly divided into a high-fat diet control group (HC, n = 10) and an exercise group (HE, n = 12). The HC and HE group were continually fed with high fat diet, while the HE group was administered with swimming training for 6 weeks in addition at the same time. After 24 weeks, the insulin sensitivity index was calculated, and serum adiponectin level was detected by using ELISA. The expressions of AdipoR mRNA in skeletal muscle were detected with real-time fluorescence quantitative polymerase chain reaction (PCR). Results After 18 weeks, compared to NC group, the insulin sensitivity index of HF group decreased significantly. It suggested that insulin resistance appeared in HF group. Twenty-four weeks later, compared to NC group, the ISI of HC group was significantly decreased, meanwhile the level of serum adiponectin, expression of AdipoR1 and AdipoR2 mRNA in skeletal muscle of HC group were 71.9% , 59.9% and 69.2% of those of the NC group, respectively; compared to HC group, the ISI was increased significantly by exercise, meanwhile the expression of AdipoR1 mRNA in skeletal muscle was significantly increased by 1.33 times, however the level of serum adiponectin and the expression of AdipoR2 mRNA in skeletal muscle were not altered in HE group. Conclusion Six weeks of exercise improves insulin sensitivity through increasing the expression of AdipoRI mRNA in skeletal muscle.

Objective To study the effects of semiconductor laser irradiation and high voltage static electric fields on small vessel damage in diabetic rats.Methods Fifty healthy male Wistar rats were randomly divided into two groups:8 rats in a normal group and 42 in a diabetic model group.The diabetic models were created by intrape- ritoneal injection of streptozocin.The diabetic model rats were randomly divided into four subgroups:a diabetes group,a semiconductor laser treatment group,a high voltage static electric field treatment group and a comprehensive treatment group receiving combined semiconductor laser and high voltage static electric field exposure.The rats in each treatment group were subjected to the corresponding intervention.After 20 days of treatment,the venous blood, kidney tissue and myocardium tissue of the rats were collected,and the concentrations of blood glucose,insulin,en- dothelin and tissue were detected.Results Compared with the normal group,a significant increase in blood glu- cose and endothelin was observed in the diabetic model group,along with significantly decreased blood insulin and significant small vessel endothelium proliferation in the kidney tissue.Compared with the diabetes group,endothelin levels were significantly lower in all 3 treatment groups,and blood insulin was also higher in the comprehensive treat- ment group.Conclusion There were severe abnormalities in blood glucose,insulin and endothelin as well as mild impairment of small vessel endothelium proliferation in the diabetic rats.Semiconductor laser and high voltage static electric field exposure have a role in treating and preventing these conditions in diabetic rats.

70 bpm during scan),the proportion of segments that could not be assessed because of motion artifact were 0.1%(1/759),1.1%(7/649),2.5% (10/407),42.6%(103/242),and 75.5%(108/143),respectively.With conventional selective coronary angiography as the golden standard,the sensitivity,specificity,positive and negative prediction values to detect≥50% stenotic lesions in the assessable segments were 79.2%,96.0%,83.8%,and 94.6%,respectively.There was a significant correlation between the number of segments per patient not assessable because of motion artifact and heart rate during the scan(r=0.655,P=0.000).Conclusion MSCT is capable of achieving high accuracy for detection of coronary artery stenosis,and is a reliable technique to diagnose coronary artery disease.

Objective To investigate the imaging features of sarcomatoid carcinoma(SC)of lung on chest radiography and CT and to improve knowledge of SC.Methods The chest plain films,CT images and clinical data of all 7 cases of pathologically proved lung SC were retrospectively analyzed.Results All cases presented with a spheroid solid lung mass ranged from 3 to 11 cm in diameter(average 7 cm).All the lesions were located in middle and lower fields of the lung:3 lesions in right lower lobe,2 in right middle lobe,and the other 2 in left lower lobe.Among the 7 cases:6 cases were of peripheral type and 1 case was of central type.The peripheral-typed lesions of 5 cases had clear margin and 3 of them were lobulated.Three massess were homogenous in density,and the other 4 were inhomogeneous in density with formation of central cavity or calcification.After intravenous contrast administration.Three lesions showed homogeneous enhancement,and the other 4 lesions had inhomogeneous enhancement.The lesions with diameter larger than 6 cm showed marginal or patch-like enhancement.Five cases had pleural or chest walls invasion.Two cases had mediastinal lymph nodes metastases.One case had multiple remote metastasis.Conclusion There are some relatively specific features of lung SC on chest radiography and CT,which may be helpful for diagnosis.

The level of serum soluble interleukin-2 receptor(sIL-2R)was measured in 103 patientswith hepatitis B and 26 hepatitis B virus(HBV)carriers by enzyme-linked assay.The sIL-2Rconcentration were elevated significantly in each type of hepatitis B patients and HBV carriers,compared with control group(P

Objective To establish an ultraviolet-irradiation damage model in cultured fibroblasts derived from human skin and to explore the potential protective effects and mechanisms of amyloid precursor protein 17-met peptide (APP17-mer peptide) on the oxidative damage and collagen metabolism in cultured fibroblasts after ultraviolet irradiation. Methods Human dermal fibroblast cultures were established by outgrowth from foreskin biopsies of a healthy donor and were irradiated by a single exposure to ultraviolet rays and cultured in a series of concentrations of APP17-mer peptide (0, 20, 40, 80 μmol/L).The activity of fibroblasts was detected by the assay of MTT. The intracellular ROS level was measured with a confocal microscope. The expression of MMP-1 mRNA was analyzed real-time quantitatively following RT-PCR. Results Primary cultures of human skin fibroblasts were established from human foreskin in DMEM supplemented with 10 % fetal bovine serum. UV irradiation depressed cellular activity and increased intracellular level of ROS (P<0.05). 40μmol/L and 80μmol/L APP17-mer peptide increased the cellular activity in both UV irradiated fibroblasts and unirradiated fibroblasts (P<0.05), however,20 μmol/L did not show such protective effects (P>0. 05). 40μmol/L APP17-mer peptide could depress the level of ROS in irradiated libroblasts. A single exposure of fibroblasts to UV irradiation resulted in 1.78 foldup-regulation of MMP-1 mRNA compared with unirradiated sample, 40μmol/L and 80μmol/L APP17-mer peptide decreased the expression of MMP-1 mRNA (P<0.05 and P<0.01, respectively).Conclusion APP17-mer peptide can enhance cellular activity under UV-induced oxidative stress and in-hibit collagen degradation in fibroblasts irradiated with ultraviolet rays. Inhibition of ROS production may be involved in the protective mechanism of APP17 peptide.

AIMTo investigate the gender-related differences in the metabolism of trans tramadol (trans T) enantiomers and the glucuronidation of trans O-demethyltramadol (M1) enantiomers.

METHODSIn vitro, trans T or M1 were separately incubated with liver microsomes of male or female rats. The concentrations of the enantiomers of trans T and M1 were determined by an HPCE method.

RESULTSCompared with (+)-enantiomers, (-)-trans T was preferentially metabolized, and (-)-M1 was produced faster in rat liver microsomes. (+)-M1 and (-)-M1 were preferentially glucuronidated in the liver microsomes of male and female rats, respectively. Compared with those in male rat liver microsomes, the enantiomeric ratios of CLint for M1 formation and M1 glucuronidation were more deviated from 1 in female rat liver microsomes.

CONCLUSIONIn vitro, trans T metabolism, M1 formation and M1 glucuronidation were found to be stereoselective in rat liver microsomes. There were gender-related differences in the stereoselectivity in M1 formation and M1 glucuronidation, with a larger extent in female rat liver microsomes.

Analgesics, Opioid ; metabolism ; Animals ; Female ; Glucuronic Acid ; metabolism ; Male ; Microsomes, Liver ; metabolism ; Rats ; Rats, Sprague-Dawley ; Sex Factors ; Stereoisomerism ; Tramadol ; analogs & derivatives ; metabolism