Objective To explore clinical characters of type 1 diabetes mellitus with different serum potassium levels in children and adolescent.Methods One hundred and seventy-five patients with type 1 diabetes mellitus were reviewed,they were divided into 3 groups according to the serum potassium level.The patients whose serum potassium

This study was aimed to improve the sensitivity of magnetic induction phase shift detection system for cerebral hemorrhage. In the study, a cerebral hemorrhage model with 13 rabbits was established by injection of autologous blood and the cerebral hemorrhage was detected by utilizing magnetic induction phase shift spectroscopy (MIPSS) detection method under the feature band. Sixty five groups of phase shift spectroscopy data were obtained. According to the characteristics of cerebral hemorrhage phase shift spectroscopy under the feature hand, an effective method, B-F distribution, to diagnose the severity of cerebral hemorrhage was designed. The results showed that using MIPSS detection method under feature band, the phase shift obviously growed with increase of injection volume of autologous blood, and the phase shift induced by a 3-mL injection reached -7.750 3 degrees ± 1.420 4 degrees. B-F distribution could effectively diagnose the severity of cerebral hemorrhage. It can be concluded that the sensitivity of the cerebral hemorrhage magnetic induction detection system is improved by one order of magnitude with the MIPSS detection method under the feature band.
Animals ; Cerebral Hemorrhage ; diagnosis ; Magnetic Phenomena ; Magnetics ; Rabbits ; Spectrum Analysis ; methods

OBJECTIVETo investigate the dynamic changes of the epididymal size 1 year after vasectomy.

METHODSFifty male volunteers received vasoligation. Before and at 1, 2, 3, 6, and 12 months after operation, we measured the size and detected the internal echoes of the epididymis using color Doppler ultrasonography.

RESULTSThe bilateral epididymides were both thickened post-operatively in all the 50 cases, with statistically significant differences between the baseline and the 1st month, the 1st and the 2nd month, the 2nd and the 3rd month, or the 3rd and the 6th month after surgery (all P < 0.01), but not between the 6th and the 12th month (P > 0.05).

CONCLUSIONWithin 6 months after vasectomy, the bilateral epididymides manifested a progressive thickening, but basically restored their balance of secretion-absorption after 6 months.

Epididymis ; diagnostic imaging ; pathology ; physiology ; Humans ; Male ; Organ Size ; Postoperative Period ; Time Factors ; Ultrasonography, Doppler, Color ; Vasectomy

OBJECTIVETo investigate the ultrastructure and the alkaline phosphatase (ALP) activity changes of NIH3T3 cells incubated with secretive human bone morphogenetic protein-2 (hBMP-2) that is induced by gene transfection through transwell system.

METHODSEukaryotic expression vector (pcDNA3.1-B2) was transduced into NIH3T3 cells by Sofast, a positive compound transfection agent. The positive cell clones were selected with G418. The cytoplasmic and extracellular expression of BMP-2 in the NIH3T3 cells were determined by immunohistochemical and enzyme-linked immunosorbent assay (ELISA). NIH3T3 cells were co-cultured with hBMP-2 gene transfecting cells through transwell system, and the ultrastructure and ALP activity (the markers of osteogenetic differentiation) changes were observed.

RESULTSThere were cytoplasmic and extracellular expression of BMP-2 in transfecting NIH3T3 cells. The ultrastructure changes and the high expression of ALP suggested the osteogenetic differentiation tendency of NIH3T3 cells co-cultured with transfecting NIH3T3 cells.

CONCLUSIONSSecretive BMP-2 that is induced by gene transfection could promote the osteogenetic differentiation of fibroblast cells.

Alkaline Phosphatase ; metabolism ; Animals ; Bone Morphogenetic Protein 2 ; genetics ; Coculture Techniques ; Fibroblasts ; cytology ; ultrastructure ; Humans ; Mice ; NIH 3T3 Cells ; Osteogenesis ; Transfection

The clinical and hematologic features in 22 patients with metastatic carcinoma of bone marrow were observed and analyzed. Morphology of bone marrow cells, bone marrow biopsy and other accessory examinations were performed. The primary or cardinal symptoms of metastatic carcinoma of bone marrow included anemia (17 cases, 77.3%), ostealgia (10 cases, 45.5%), fever (8 cases, 36.4%), hemorrhage (4 cases, 18.2%) and complicated hemolytic anemia (4 cases, 18.2%). The primary carcinomas, diagnosed by pathologic and accessory examinations, include gastric carcinoma (6 cases, 27%), lung cancer (3 cases, 13.6%), ovarian cancer (2 cases, 9%), mammary cancer, prostatic carcinoma, osteocarcinoma and metastatic malignant melanoma (1 case, respectively), and unknown primary lesion (7 cases, 31.8%). The hematologic features were decrease of hemoglobin (17 cases, 77.3%) and blood plate count (16 cases, 72.7%), leukocytosis (11 cases, 50%), immature leukocytes (14 cases, 63.6%) and erythrocytes (9 cases, 40.9%) seen on the peripheral blood smear, and reticulocytosis (4 cases, 18.2%). Masses of metastatic carcinoma cells can be frequently seen at two sides and tail of bone marrow smear. Bone marrow biopsy of 8 cases demonstrated the infiltration of carcinoma cells with nest-like distribution in the bone marrow cavity. Examination of MRI in 6 case showed destruction of bone and corpus vertebra and abnormal signal focus. Bone marrow biopsy could contribute to improve the accuracy of diagnosis and determine the origin of primary carcinoma. MRI plays an important role in diagnosis of metastatic carcinoma in bone marrow.

Orexin-A is a novel neuropeptide produced by neurons mainly located in lateral hypothalamic area that potently facilitates appetite and food intake. The purpose of this study was to investigate the possible change in orexin-A immunoreactivity in suckling-induced hyperphagia. By using immunohistochemistry and image analysis techniques we examined orexin-A-like immunoreactivity in a series of rat brain sections corresponding to the hypothalamus in groups of non-lactating, lactating, lactating with overnight cessation of suckling, lactating and cessation followed by resumed short-term sucklings. Long-term lactation significantly increased daily food intake on day 3 (81%) and day 11 (180%) postpartum compared to that in non-lactating postpartum rats, whereas daily food intake was significantly decreased by overnight cessation of suckling on day 11 postpartum in long-term lactating rats (45%). Moreover, long-term lactating rats on day 12 postpartum exhibited significantly greater number and higher mean staining intensity of orexin-A immunoreactive neurons than those of non-suckling postpartum rats (P<0.001 and P<0.05, respectively). Overnight cessation of lactation in rats on day 12 postpartum significantly decreased both the number and mean staining intensity of orexin-A immunoreactive neurons compared to those in long-term lactating group of rats (P<0.001 and P<0.05, respectively), similar to the levels in the non-lactating postpartum rats. Resumed lactation for 2 and 5 h after overnight cessation of lactation significantly increased the number (P<0.001 and P<0.05, respectively) and mean staining intensity (P<0.05) of orexin-A immunoreactive neurons compared to those in the rats without resumed lactation. Both long-term lactation and short-term resumed suckling enhanced orexin-A immunoreactivity in the hypothalamus in rats, and overnight cessation of lactation down-regulated the increased orexin-A immunoreactivity induced by long-term lactation. Suckling may regulate orexin-A expression in the hypothalamus and the increased orexin-A may be involved in hyperphagia in lactating rats, suggesting the possibility of the existence of some neural-humoral links between suckling and hypothalamic orexin-A-immunoreactive neurons.
Animals ; Feeding Behavior ; physiology ; Female ; Hyperphagia ; physiopathology ; Hypothalamus ; metabolism ; physiology ; Immunohistochemistry ; Intracellular Signaling Peptides and Proteins ; immunology ; metabolism ; Male ; Neurons ; metabolism ; physiology ; Neuropeptides ; immunology ; metabolism ; Neurotransmitter Agents ; immunology ; metabolism ; Orexins ; Rats ; Rats, Wistar

OBJECTIVETo observe the effect on P170, LRP, TOPO II of S180 tumour MDR mice for matter by 70% ethanol with Huanglian Jiedu Tang, and then discuss the molecular biology base for clinic.

METHOD18-22 gramme mice were divided into four groups for normal S180 tumour cell group, matter by 70% ethanol with Huanglian Jiede Tang 100 mg x kg(-1) and 50 mg x kg(-1) in random. Each mouse was given S180 cell 0.2 mL by celiac, and after 24 hours give cisplatin for Injective 3 mg x kg(-1), ip, once a week. And give cyclophosphamide and 5-FU 3 mg x kg(-1), ig, once every day. After 15 days, collect lively mice ascites and give it for onefold normal mice. And then repeat before process. At the same time, every group was given corresponding medicine for 0.2 mL x 10 g(-1). The normal group and the model group were given the same cubage water, all together fore weeks. At last observd the P170, LRP, TOPO II by flow cytometry.

RESULTMatter by 70% ethanol with Huanglian Jiedu Tang could obviously reduce the express of P170 and LRP, and the activiation of TOPO II.

CONCLUSIONMatter by 70% ethanol with Huanglian Jiedu Tang can intervene the ocurrence of the multi-drug resistance of tumour cells by regulating the biology gene.

ATP-Binding Cassette, Sub-Family B, Member 1 ; metabolism ; Animals ; Cell Line, Tumor ; Coptis ; chemistry ; DNA Topoisomerases, Type II ; metabolism ; Drug Combinations ; Drug Resistance, Multiple ; drug effects ; Drug Resistance, Neoplasm ; drug effects ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Ethanol ; chemistry ; Flow Cytometry ; Mice ; Phytotherapy ; Plants, Medicinal ; chemistry ; Sarcoma 180 ; metabolism ; pathology ; prevention & control ; Vault Ribonucleoprotein Particles ; metabolism

BACKGROUNDBone morphogenetic proteins (BMPs), which belong to the transforming growth factor beta superfamily, are powerful regulators of cartilage and bone formation. This study investigated the biological changes of NIH3T3 cells incubated with secretive BMP2 that was induced by gene transfection through transwell.

METHODSEukaryonic expression vector (pcDNA3.1-B2) was transfered into NIH3T3 cells with Sofast, a positive compound transfection agent. The positive cell clones were selected with G418. The cytoplasmic and extracellular expressions of BMP2 were determined by immunohistochemical stain and enzyme-linked immunosorbent assay. NIH3T3 cells were co-cultured with hBMP2 gene transfecting cells through transwell, and the ultrastructure, alkaline phosphatase activity and the expression of osteocalcin (the marker of osteogenetic differentiation) changes were observed.

RESULTSThere were cytoplasmic and extracellular expressions of BMP2 in transfecting NIH3T3 cells. The ultrastructural changes, the high activity of alkaline phosphatase and the positive stain of osteocalcin suggested the osteogenetic differentiation tendency of NIH3T3 cells co-cultured with transfecting NIH3T3 cells.

CONCLUSIONSecretive BMP2 that is induced by gene transfection could promote the osteogenetic differentiation of fibroblast cells.

Alkaline Phosphatase ; metabolism ; Animals ; Bone Morphogenetic Protein 2 ; Bone Morphogenetic Proteins ; analysis ; genetics ; Cell Differentiation ; Enzyme-Linked Immunosorbent Assay ; Fibroblasts ; cytology ; Immunohistochemistry ; Mice ; Microscopy, Electron, Transmission ; NIH 3T3 Cells ; Osteocalcin ; analysis ; Osteogenesis ; Transfection ; Transforming Growth Factor beta ; analysis ; genetics

Objective To evaluate the characteristics of 99Tcm-ciprofloxacin and explore its feasibility in early detection of secondary infectious foci of severe acute pancreatitis (SAP).Methods Ciprofloxacin was labeled with 99Tcm.The labeling efficiency and radiochemical purity of 99Tcm-ciprofloxacin were calculated and its biodistribution in normal pigs was measured.The recruited baby pigs were divided into three groups:normal control group (6), non-infected group (6) and infected group (16).370-400 MBq of 99Tcm-ciprofloxacin was injected into each pig intravenously.SPECT scanning was performed at 0.5, 1,2, 3, 4 and 6 h after administration.The differences of 99Tcm-ciprofloxacin uptake among groups were calculated and the tracer activity ratio of lesion-to-background was recorded at each time point.The diagnostic value of 99Tcm-ciprofloxacin SPECT imaging for the dectection of secondary infection of SAP was assessed using histopathological results as the gold standard.Variance analysis and least significant difference test were used to analyze the data.Results Both the labehing efficiency and radiochemical purity of 99Tcm-ciprofloxacin were over 90% within 6 h.Organs with rich blood supply, such as kidney, liver and spleen were the target organs for the accumulation of 99Tcm-ciprofloxacin; while no significant uptake was found in gastrointestinal tract or normal pancreas tissue of SAP.Rapid plasma clearance and renal excretion were observed.In the infected group, the lesion was visualized at 1 h after administration.The highest radioactivity ratio of lesion-to-background (3.36 ± 0.33) was at 3 h after administration, which was significantly higher than that of the other time point ( F =99.570, P ＜0.001 ).The sensitivity, specificity, positive and negative predictive values, Youden's index (YI) and Kappa value of 99Tc%ciprofloxacin imaging were 88.2% (15/17), 83.3% (5/6), 93.8% ( 15/16), 71.4% (5/7), 0.715 and 0.667 respectively.Conclusions The biodistribution of99Tcm-ciprofloxacin is suitable for imaging infectious focus of SAP.The optimal imaging time for the detection of secondary infection of SAP is 3 h after administration, with high sensitivity and specificity.

OBJECTIVETo analyze the genetic polymorphism of 6 short tandem repeat (STR) loci on chromosome 7p14-15 and 8 STR loci on chromosome 12q13 in Chinese north Hans.

METHODSFluorescence-labeling polymerase chain reaction and capillary electrophoresis were used to analyze the genetic polymorphism of 100 randomly selected individuals from Chinese north Han nationality at 6 STR loci (D7S1808, D7S2250, D7S2251, D7S683, D7S656 and D7S528) on chromosome 7p14-15 and 8 STR loci(D12S1056, D12S1293, D12S83, D12S1655, D12S1662, D12S334, D12S137 and D12S102) on chromosome 12q13.

RESULTSIn the Chinese north Han population, 7 alleles and 24 genotypes, 8 alleles and 27 genotypes, 7 alleles and 22 genotypes, 4 alleles and 10 genotypes, 6 alleles and 17 genotypes, 5 alleles and 13 genotypes were observed at D7S1808, D7S2250, D7S2251, D7S683, D7S656 and D7S528. The heterozygosities at the above 6 STR loci were 86%, 88%, 83%, 79%, 85% and 80%, respectively. Five alleles and 15 genotypes, 5 alleles and 15 genotypes, 8 alleles and 29 genotypes, 6 alleles and 17 genotypes, 6 alleles and 17 genotypes, 6 alleles and 19 genotypes, 5 alleles and 13 genotypes, 7 alleles and 24 genotypes were observed at D12S1056, D12S1293, D12S83, D12S1655, D12S1662, D12S334, D12S137 and D12S102. The heterozygosities at the above 8 STR loci were 86%, 84%, 87%, 82%, 84%, 85%, 81% and 89%, respectively.

CONCLUSIONThe distributions of allele frequencies of 6 STR loci on chromosome 7p14-15 and of 8 STR loci on chromosome 12q13 were consistent with the Hardy-Weinberg equilibrium. The highly genetic polymorphism was observed in Chinese north Han population.

Asian Continental Ancestry Group ; genetics ; China ; Chromosomes, Human, Pair 12 ; genetics ; Chromosomes, Human, Pair 7 ; genetics ; Humans ; Microsatellite Repeats ; genetics ; Polymerase Chain Reaction ; Polymorphism, Genetic ; genetics