Objective To observe the dynamic change of cerebral blood flow of newborns with hypoxic-ischemic encephalopathy(HIE).Methods Cerebral blood flow of middle cerebral artery and pulsatility index(PI) on 75 newborns with HIE and 50 normal infants were examined with transcranial doppler sonography at different time points,and the relations between cerebral blood flow and clinic indexes were analyzed.Results The blood velocity of normal infants increased gradually, and PI decreased from 2 to 5 days.The velocities were lower than that of normal infants,and PI was higher at 12th hour and 1st day, but during 2-5 days,the velocities got higher and PI got lower, in which the decrease of velocities correlated positively with Apgar scores and the increase of velocities were negatively correlative to Apgar scores.Compared with the neonates who had poor prognosis retrospectively with those had good prognosis, the velocity changes were found to be more significant.Conclusion The change of cerebral blood flow can show the pathophysiology of HIE and prognosticate the prognosis of neonates with HIE.

The complex level of constructing biopharmaceutics classification system of Chinese materia medica CMMBCS) was the study of traditional Chinese compound, on the premise of insisting that the multicomponent simultaneous determination, when carrying out the study of intestinal permeability, the primary task was to define the source of the components that was absorbed through the intestinal wall, namely, which medicinal material the components belonged to in traditional Chinese compound. The technology of chemical fingerprint and in vitro everted gut sac model were used in this research to make multicomponent an intuitive source attribution which permeated the intestine in the classic formula Gegen Qinlian decoction, and to lay the foundation for the further qualitative and quantitative research of intestinal permeability.
Animals ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; pharmacokinetics ; Intestines ; metabolism ; Male ; Permeability ; Plants, Medicinal ; chemistry ; Rats ; Rats, Wistar

Adult ; Humans ; Lateral Ventricles ; pathology ; Male ; Neurocytoma ; pathology

The abnormality of ubiquitin proteasome pathway is an important factor leading to the imbalance of protein homeostasis. In this process, the deubiquitinase responsible for removing the ubiquitin chain of protein substrate is very important. Its abnormal activity or expression can cause the functional changes of key oncogenic/tumor suppressor proteins, which directly or indirectly lead to the occurrence, development and malignant evolution of tumors. Based on this, the discovery and research of small molecule inhibitors targeting deubiquitinases have become a hot field of anti-tumor candidate drugs. This review will focus on the regulatory effect and mechanism of ubiquitin proteasome pathway, especially deubiquitinase on tumor, introduce the application of deubiquitinase small molecule inhibitors in tumor treatment, and discuss the research status and latest progress of small molecule inhibitors, so as to provide ideas for the research of new anti-tumor strategies based on deubiquitinase.

Objective To investigate the roles of matrix metalloproteinases(MMP)and tissue inhibitors of metalloproteinases(TIMP)in dentinogenic ghost cell tumor(DGCT)and ghost cell odontogenic carcinoma(GCOC).Methods The expressions of MMP-2,MMP-9,MMP-14,TIMP-1 and TIMP-2 were examined in 15 DGCT cases and 9 GCOC cases by immunohistochemistry.Their mRNA expression in one DGCT case and one GCOC case were investigated by RT-PCT.MMP-2 and MMP-9 protein activities in the two csses were analyzed by gelatin zymography.Results MMP-9 and TIMP-1 expressions elevated greatly in GCOC,and there was a significant dliferenee(P＜0.05)in TIMP-1 expression between GCOC and DGCT.Pro-MMP-9,MMP-9 activated form,pro-MMP-2,and MMP-2 activated forms were detected in the GCOC case.while pro-MMP-9 and MMP-9 activated form were very faint in the DGCT case.The mRNA level of MMP-9 elevated obviously in the GCOC case,which was similar to that of TIMP-1.Conclusions The elevated expression of MMP-9 and TIMP-1 may influence the behaviour of GCOC.

OBJECTIVETo discuss the clinicopathological features and prognostic factors of gastric lymphoma.

METHODS83 gastric lymphoma cases were analyzed retrospectively in accordance to the criteria of the new World Health Organization classification for neoplastic diseases of the hematopoietic and lymphoid tissues. The correlations between clinicopathological features, therapeutic measures and survival were discussed.

RESULTSThe age of patients ranged from 25 to 77, with a median of 52. The number of males were similar to that of females. There were no specific symptoms. The most common symptoms were stomach ache (60 cases, 72%) or discomfort. The duration of symptoms was often long and with a history of chronic gastric diseases (21 cases, 25%). 13 cases had multiple lesions in the gastrointestinal mucosa. 51 cases (61%) were accompanied by lymph node involvement. According to the new World Health Organization classification for neoplastic diseases of the hematopoietic and lymphoid tissues, 57 cases were extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT)-type (MALT lymphoma), 23 were diffuse large B cell lymphoma accompanying MALT lymphoma, 2 were diffuse large B cell lymphoma and 1 was follicular lymphoma. Of all the cases, 31 were stage I E, 38 stage II E, 8 stage III E and 6 stage IV by the Ann Arbor staging system (1972). The total 5-year and 10-year survival rates were 77.8% and 70.1% respectively, with the mean survival time of 146 months. The 5-year and 10-year survival rates of MALT lymphoma were 77.4% and 72.3%, the 5-year and 10-year survival rates of diffuse large B cell lymphoma accompanying MALT lymphoma were 81.8% and 68.2%, the 5-year survival rate of diffuse large B cell lymphoma was 50.0%.

CONCLUSIONSThere are no specific symptoms in gastric lymphoma patients. Extranodal marginal zone lymphoma of MALT-type is the main histopathological type of gastric lymphoma, often accompanied by multiple mucosa involvement and also often accompanied by a history of chronic gastric disease. The lesion is usually localized for a long time, with a very good prognosis. Survival rate has a significant correlation with lymph node involvement and clinical stage. No correlations were found between the survival rates with age, gender, B symptoms, invasive depth of the wall of stomach, the size and range of the tumors or different therapeutic measures.

Adult ; Aged ; Chemotherapy, Adjuvant ; Female ; Follow-Up Studies ; Gastrectomy ; methods ; Humans ; Lymphatic Metastasis ; Lymphoma ; pathology ; surgery ; therapy ; Lymphoma, B-Cell ; pathology ; surgery ; therapy ; Lymphoma, B-Cell, Marginal Zone ; pathology ; surgery ; therapy ; Lymphoma, Large B-Cell, Diffuse ; pathology ; surgery ; therapy ; Male ; Middle Aged ; Neoplasm Staging ; Radiotherapy, Adjuvant ; Retrospective Studies ; Stomach Neoplasms ; pathology ; surgery ; therapy ; Survival Rate

OBJECTIVETo evaluate imaging features of benign and malignant solitary pulmonary nodules (SPN) using dynamic computed tomography (dCT) to improve the accuracy of radiological diagnosis.

METHODSFifty-one patients with SPN were studied by dCT. In this procedure, a bolus of 100 ml contrast medium was administrated intravenously at a rate of 4 ml/sec. The same-located dynamic scans were carried out from 15 sec to 120 sec following the injection. Time-attenuation curves (TAC) were created according to circular or oval ROI drawn over nodules. Histopathological diagnosis was considered as the golden standard in all patients. Double-blind examination and evaluation were carried out and the data were analyzed statistically with Mann-Whitney U test.

RESULTSThirty eight cases were diagnosed to be malignant SPN (mSPN) and 13 cases to be benign SPN (bSPN). The benign SPN were further divided into two groups, bSPN(1) consisting 6 cases with chronic pneumonitis, nodular tuberculosis or sclerosing hemangioma and bSPN(2) consisting 7 cases with tuberculoma, pulmonary cyst, pulmonary sequestration or mycosis ball. There were statistically significant differences between mSPN and bSPN(2) in peak heights of enhancement (87.6 HU vs. 57.8 HU, P < 0.01), enhancement values (peak heights- unenhanced CT values, 59.6 HU vs. 11.1 HU, P < 0.01). However, no statistically significant differences of those two values existed between mSPN and bSPN(1). TAC of mSPN reached to peak height more rapidly and remained a plateau. TAC of bSPN(1)s showed similar changes to that of mSPN despite a delayed reach to a peak height or even a descending branch. TAC of the bSPN(2)s was lower and flatter without peak height. If a threshold of 20 HU was taken for dCT, the lesions with < or = 20 HU were diagnosed as benign, and the lesions with > 20 HU were diagnosed as malignant, with a sensitivity of 100%, a specificity of 54.0% and an accuracy of 88.4%.

CONCLUSION(1) Absence of the marked enhancement (< or = 20 HU) in dynamic CT is strongly predictive of benignancy. (2) The peak height and enhancement value of dCT are helpful to differentiate malignant SPNs from benign ones. (3) The TAC configuration is helpful in differentiating malignant SPNs from benign ones. Descending branches could be found in some benign lesions, but not in the malignant ones. The TAC of tuberculoma and mycosis ball is usually relatively low and flat without any peak height.

Adenocarcinoma ; diagnostic imaging ; Adult ; Aged ; Carcinoma, Squamous Cell ; diagnostic imaging ; Contrast Media ; Diagnosis, Differential ; Female ; Humans ; Lung Diseases ; diagnostic imaging ; Lung Neoplasms ; diagnostic imaging ; Male ; Middle Aged ; Radiographic Image Enhancement ; Solitary Pulmonary Nodule ; diagnostic imaging ; Tomography, X-Ray Computed ; methods

OBJECTIVETo investigate the role of MMP-2, MT1-MMP and TIMP-2 in the carcinogenesis of oral lichen planus (OLP).

METHODSImmunohistochemistry was performed to examine the expression of OLP and compare with that of NOM.

RESULTSThe expression of these proteinases significantly increased from NOM, non-atrophic OLP, to atrophic OLP and OSCC. The expression of MMP-2 and MT1-MMP in atrophic OLP was significantly higher than in non-atrophic OLP. Furthermore, the expression of TIMP-2 consequently increased with the increasing of the MMP, but the increase of TIMP-2 was less than that of MMP.

CONCLUSIONSMMP may be useful marker to judge the possibility of malignant change of OLP.

Carcinoma, Squamous Cell ; metabolism ; pathology ; Humans ; Immunohistochemistry ; Lichen Planus, Oral ; metabolism ; pathology ; Matrix Metalloproteinase 14 ; metabolism ; Matrix Metalloproteinase 2 ; metabolism ; Mouth Mucosa ; metabolism ; pathology ; Mouth Neoplasms ; metabolism ; pathology ; Tissue Inhibitor of Metalloproteinase-2 ; metabolism

OBJECTIVETo evaluate the influence of the surveillance system and preventive measurements on the control of severe acute respiratory syndrome (SARS) in a university in Guangdong Province.

METHODSA university with more than thirty thousand undergraduates, staff and their relatives was retrospectively studied, from which information regarding the status of epidemic, organization of leadership, disease control strategies and measures were collected and analyzed.

RESULTSThe construction of the surveillance system in such a model as "individual-dormitory/home-class/unite-faculty and institute-university" largely contributed to the achievement of the goals of low incidence, no secondary, no epidemic, and no death. A series of control measures benefited the early diagnosis, effective isolation, prevention, and treatment of SARS control.

CONCLUSIONSARS could be effectively controlled in university only if strict surveillance system is built up, and all-round preventions, including early isolation of both confirmed or suspected cases and close contacted persons, are carried out.

Adolescent ; Adult ; China ; Communicable Disease Control ; methods ; Female ; Humans ; Male ; Population Surveillance ; methods ; Severe Acute Respiratory Syndrome ; prevention & control ; Universities

OBJECTIVETo explore the association between chromosomal disequilibrium and chemoresistance/chemosensitivity in non-small cell lung cancer (NSCLC) using comparative genomic hybridization (CGH).

METHODSGenomic DNA samples were prepared from the tumor tissues in paraffin-embedded sections derived from 88 patients with advanced NSCLC (18 with chemosensitivity and 16 with chemoresistance). The DNAs were first amplified by a degenerate oligonucleotide prime-polymerase chain reaction protocol and then labeled with fluorescence as probes for CGH analyses. The correlations of the resulting chromosomal imbalances with the chemo-sensitivity and other pathological features of the patients were analyzed.

RESULTSA total of 640 abnormal chromosome regions including 96.12% gains and 3.88% losses were detected in 88 specimens. The results indicated that the most frequently gained chromosome regions were 19p13.1-13.3 (39/88, 44.12%), followed by 9q12-q22 (26/88, 29.41%), 22q12-q13 (26/88, 29.41%), and Xq (29/88, 32.35%). The total number of abnormal regions related with chemo-sensitivity was 188( 182 gains and 6 losses), while the number of the abnormal regions linked to the chemoresistance was 452 (431 gains and 21 losses) (P=0.005). Gains of 14p12-p13 and 19p were significantly correlated with the chemosensitivity of the NSCLC (P=0.006). Gains of 1q12-q22, 10q25-q26, 5p15.1-p15.3, 19q13.2-13.4, 20p11.2-p12, 21q22, and Xp 21-p22.1 were also significantly correlated with the chemoresistance (P]0.005, 0.029, 0.039, 0.029, 0.039, 0.016, and 0.006, respectively). No correlation between the chromosome abnormalities and other clinical features was observed.

CONCLUSIONSThe specific gains and losses of chromosome region is correlated with platinum-based first-line chemotherapy in NSCLC patients,as confirmed by CGH detection. This finding is useful for further identifying the chemosensitivity-related functional genes, predicting clinical effectiveness, and achieve individualized treatment in the future.

Adult ; Aged ; Carcinoma, Non-Small-Cell Lung ; drug therapy ; genetics ; Chromosome Aberrations ; Comparative Genomic Hybridization ; Drug Resistance, Neoplasm ; genetics ; Female ; Humans ; Karyotyping ; Lung Neoplasms ; drug therapy ; genetics ; Male ; Middle Aged ; Treatment Outcome