Objective To investigate the CT features of the central nervous system in congenital syphilis infant. Methods CT findings of central nervous system in 11 infants with clinically proved congenital syphilis were analyzed retrospectively. Results CT findings in 10 syphilis neonates were diffuse hypodense lesions in the white matter, with subarachnoid and intra-encephalic hemorrhage in 3 and 1 cases, respectively. One 2-month-old syphilis infant case and 5 cases of follow-up after 45 days to 6 months of treatment demonstrated bilateral widened sulci and cistern with enlarged ventricles in 3 of them. Conclusion CT findings of the central nervous system in congenital syphilis infant are similar to those of hypoxic-ischemic encephalopathy in neonates, and extra-encephalic hydrocephalus or brain hypogenesis ensues later on.

Herbicides ; poisoning ; Humans ; Paraquat ; poisoning ; Poisoning ; complications ; therapy

Objective To analyze differential gene expression profiles by cDNA microarray in colon carcinomas with or without lymphatic metastasis. Methods cDNA microarray was prepared by spotting polymerase chain reaction (PCR) products of 16 000 human genes onto specially treated glass slides. The cDNA probes were prepared by labeling cancer tissue mRNA and lymphatic metastasis tissue mRNA with Cy3-dUTP and Cy5- dUTP through reverse transcription. The mixed probes were ,then hybridized to the cDNA microarray. The chips were scanned by Agilent fluorescence scanner and analyzed by gene Pix QuantArray. Results Among the 16 000 target genes, 999 genes were screened out for differences in gene expression level in the cases with colon carcinoma and lymphatic metastasis, among which 537 were up-regulated and 462 down-regulated. There were many genes evolved in the metastasis of colon carcinoma, including oncogenes, tumor-suppressor genes, adhesion molecular, matrix metalloproteinases, signal transduction factors, metabolism, immune associated genes, etc. Conclusion The genes, being closely associated with carcinoma metastasis, could be considered as potential markers to predict metastasis and targets for antimetastasis intervention.

Objective To investigate the difference and significance of the clinical index for the aged suffered from type 2 diabetes mellitus in southern part of Guizhou. Methods A total of 240 old patients of type 2 diabetes mellitus were divided into 5 groups according to the complications (non-complications, 43; cerebrovascular disease, 20; macroangiopathy, 43; peripheral neuropathy, 67; diabetic retinopathy, 67) and 5 groups according to the different nationalities (Han 90, Miao 60, Buyi 70, Shui 12, Other 8). The chemical index including serum FBG, HbAlc, TC, TG, and HDL-c of all patients were detected. The results were treated with t-test and X2 test. Results The serum levels of FBG, HbAlc, TC, TG in the diabetic patients with complications were higher than that of non-complication patients (P

Molecular biology,one of the major branches of biochemistry,is quite abstract and abstruse for students.Fortunately with the help of multimedia,an effective teaching assistant method which enjoys great advantages,teachers can fully convey teaching ideas in a vivid picture.As a result,it will be much easier for students to follow teachers in class.

No abstract available in English.
Methods

Aim To investigate whether the pain modi-fication by group I metabotropic glutamate receptors (mGluRs)required the involvement of Src homology-2 domain-containing phosphatase-2 (SHP-2 ).Methods Co-immunoprecipitation was performed to examine the possible interaction between SHP-2 and group I mGluRs in spinal cord dorsal horn of mice.By measur-ing the paw withdrawal thresholds,the effects of SHP-2 inhibitor NSC-87877 or its catalytically inactive SHP-2 (C459S ) mutant on allodynia induced by group I mGluRs agonist DHPG (50 nmol)were observed.Re-sults Anti-mGluR5 antibody was able to co-immuno-precipitate SHP-2 from spinal dorsal horn of mice, while no SHP-2 was precipitated by anti-mGluR1 anti-body.Inactivation of SHP-2 by NSC-87877 (6 nmol) or SHP-2 (C459S ) effectively attenuated allodynia caused by DHPG.Conclusion SHP-2 can physically interact with mGluR5.The activation of SHP-2 may be necessary for group I mGluRs to process the nocicep-tive information.

Objective To develop a rapid and sensitive liquid chromatography-tandem mass spectrometric(LC-MS/MS) method for the determination of valproic acid in human plasma.Methods After treating human plasma sample by acetonitrile protein precipitation method,the analytes were separated on a Shimpack VP-ODS analytical column(150 mm×2.0 mm I.D,5 μm) with the mobile phase of methanol and 5 mmol/L ammonium acetate (55∶45,v/v)at a flow rate of 0.4 mL/min.Detection was carried out by adopting the multiple reaction monitoring(MRM) scanning mode in the API3200 triple quadrupole tandem mass spectrometer,electrospray ionization source,negative ion mode,selected monitoring ionic reactions were m/z 142.9→m/z 142.9(valproic acid) and m/z 179.0→m/z 179.0(1-sulfonic acid).Results Valproic acid and internal standard 1-sulfonic acid retention time were 3.03 min and 2.38 min respectively.The plasma valproic acid linear range was 0.800-80.0 μg/mL(r>0.99) with the lower limit of quantitation(LLOQ) 0.800 μg/mL.The intra-and inter-batch relative standard deviations(RSD) were both less than 15%,and the relative errors(RE) were within ±15%.The mean extraction recovery rate was(84.1±2.4)%,and the mean matrix effect factor was(104.3±2.0)%.In the stability study,valproic acid was found to be stable in plasma under various storage conditions.Conclusion This method is suitable for the determination of valproic acid in human plasma and human pharmacokinetic study of valproic acid semisodium sustained release tablet.

No abstract available.
Lung Neoplasms* ; Lung* ; Risk Factors* ; Spirometry*

Ataxia is one of the most serious neurological symptoms in elderly The clarification of the related anatomical structures are necessary for the understanding of pathophysiologic mechanisms of ataxia. We have recently experienced a case of thalamic infarct in the territory of thalamogeniculate artery. The localization of lesion was based on CT and MR imaging. At first time, right hemiparesis and ataxia were prominent. Hemiparesis was transient but ataxia had been persistent for several months. It has been suspected that thalamus could be the part of neural circuits in balancing. Our case support this suggestion clinically. Based on clinical observations, a plausible extrapolation can be made to thalamic ataxia. It maybe related with dysfunction of dentatorubrothalamic and corticopontine pathway. Thus our case led us to conclude that thalamus could be engaged in balance control of human body.
Aged* ; Arteries ; Ataxia* ; Human Body ; Humans ; Magnetic Resonance Imaging ; Paresis ; Thalamus