Objective To study the expression of p53,p16,PCNA protein in esophageal carcinoma and its relationship to sexual distinction,the location of disease,the biological level,the depth of invasion and lymph node metastasis.Methods 118 patients with esophageal carcinoma were included in the study,all of them were treated for the first time.p53,p16 and PCNA protein in the 118 cases of esophageal carcinoma were detected by immunohistochemical assay(SP technique). Results The positive expression of p53, p16, PCNA protein in 118 patients was 80 %(92/118),42%(50/118)and 97%(115/118),respectively.The positive expression of p53,PCNA protein were irrelated to the sexual distinction,the location of disease,the biological level,the depth of invasion and the lymph node metastasis.The loss of p16 was significantly related to the depth of invasion and the lymph node metastasis(P

Adolescent ; Child ; Child, Preschool ; Cytomegalovirus Infections ; complications ; Female ; Humans ; Kidney Diseases ; etiology ; Kidney Glomerulus ; pathology ; Male

AIMTo study the chemical constituents in the mycelia of Hypomyces sp..

METHODSSilica gel column chromatography was employed for the isolation and purification. Chemical and spectral methods were used to determine the structures of the isolated compounds.

RESULTSTwo compounds were isolated and identified as: hypomycin C (I) and hypomycin D (II).

CONCLUSIONCompounds I and II are new compounds.

Chromatography, Gel ; methods ; Fermentation ; Hypocreales ; chemistry ; Molecular Conformation ; Molecular Structure ; Mycelium ; chemistry ; Perylene ; analogs & derivatives ; chemistry ; isolation & purification ; Quinones ; chemistry ; isolation & purification

Cells, Cultured ; Chemokine CCL4 ; Chemotaxis, Leukocyte ; drug effects ; Endothelial Cells ; cytology ; metabolism ; Homocysteine ; pharmacology ; Humans ; Macrophage Inflammatory Proteins ; biosynthesis ; genetics ; Monocytes ; physiology ; RNA, Messenger ; biosynthesis ; genetics ; Umbilical Veins ; cytology

Objective To investigate the clinical and mammographic features of plasma cell mastitis.Methods Twenty-five patients(28 lesions)with histologically confirmed plasma cell mastitis, aged from 26 to 70 years(mean age 41 years),were examined with X-ray mammography.The clinical manifestations and imaging features were retrospectively reviewed.Results No case was in lactation.The painful irregular masses,ranged from 1.3 to 8cm in size,were found in 22 patients,while 3 patients with acute episode.Recurrent episodes of breast masses were noted in 4 patients.Based on the mammographic appearances,the plasma cell mastitis were classified as the following four types:inflammation-like type (2/28),ductal ectasia type(3/28),focal infiltration type(10/28)and nodular type(13/28).The valuable radiogyaphic signs:(1)An asymmetrically increased density along the lactiferous duct with a flame-like appearance,inhomogeneous low density tubular structures and scattered stick-shape calcifications.(2) Architectural distortion and oil cysts formation in adjacent area,(3)Subareolar ductal ectasia.Conclusions The clinical and mammographic characteristics of plasma cell mastitis are critical to avoiding unnecessary surgery.Histopathological result is needed for the diagnosis in patients highly suspected of malignancy.

Objective To evaluate the feasibility of reconstructing horizontal periodontal bone defects by tissue engineering based on bone marrow stromal cells(BMSCs)as seed cells and enamel matrix proteins(EMPs)as growth factors. Methods Two healthy rhesus monkeys were selected, and BMSCs were isolated from iliac marrow and serial subcultivation was conducted. The cells of induced BMSCs at passage 3 were harvested and mixed with Bio-oss collagen. The models of horizontal periodontal bone defects were established surgically in each buccal side of the posterior teeth, and were divided into four groups (blank control group, material group, cells/material group and cells/material/EMPs group). The histological and Micro-CT observation were carried out 8 weeks later. Results In the blank control group, the defects were filled with fibrous connective tissue. There was newly-formed alveolar bone in the material group. In the cells/material group, periodontal regeneration could be observed, while the newly-formed cementum was irregular and less in quantity. In the cells/material/EMPs group, the amount of newly-formed alveolar bone was larger, and the newly-formed cementum was continuous and regular. Conclusion The tissue engineering technique of BMSCs as seed cells in combination with EMPs induction can significantly promote the regeneration of periodontal tissue.

Objective To observe the electrocardiogram changes of threatened crowds in Keshan disease (KSD) endemic area in Shandong province. Methods In 2008,inhabitants from 21 villages of Zoucheng,Sishui,Tengzhou, Yishui, Pingyi, Wulian, Juxian and Qingzhou regions were selected as subjects undergoing electrocardiogram. No less than 100 people were chosen from each village and the examination rate was not lower than 85%. Results Among the 3378 inhabitants investigated,460 cases showed abnormal electrocardiogram and the total incidence of abnormal electrocardiogram was 13.62% (460/3378). The relatively high incidence was T-wave changes,QRS low voltage and ST-T changes,the detection rate being respectively 2.69% (91/3378), 1.92% (65/3378) and 1.72% (41/3378). The highest incidence of abnormal electrocardiogram (26.76%,55/213),the intermediate(21.50%,43/200) and the lowest(5.50%,12/218) was respectively found in Pingyi,Qingzhou and Sishui. Conclusions The threatened crowds in KSD endemic area in Shandong province are still in a state of high abnormal electrocardiogram detection,and electrocardiogram is of great value in the evaluation of KSD patients.

To study the effect of interleukin-15 (IL-15) on the proliferation, differentiation and apoptosis of MDS CD34(+) cells, CD34(+) cells of high enrichment were separated by MACS system, and cultured in liquid media with different concentration of IL-15 in treated group and without IL-15 in the control group. Apoptosis of hematopoietic precursors was assayed by propidium iodine staining and cell by FCM, and the other MDS CD34(+) cells were stained by cytochemical staining after culture. The results showed that after culture with IL-15 the proliferation and differentiation of MDS CD34(+) cells were obviously promoted. It was found the every lineage of mature cells developed, the expressions of cell surface antigens CD71, CD33 and CD19 all increased in the MDS CD34(+) cell treated with IL-15. It is suggested that IL-15 stimulates the proliferation and differentiation of MDS CD34(+) cells, and partly shows anti-apoptosis effects which may be applicable to the therapy MDS.
Antigens, CD ; immunology ; Antigens, CD19 ; immunology ; Antigens, CD34 ; immunology ; Antigens, Differentiation, Myelomonocytic ; immunology ; Apoptosis ; drug effects ; Bone Marrow Cells ; drug effects ; immunology ; pathology ; Cell Cycle ; drug effects ; Cell Differentiation ; drug effects ; Cell Proliferation ; drug effects ; Cells, Cultured ; Flow Cytometry ; Humans ; Interleukin-15 ; pharmacology ; Microscopy, Fluorescence ; Myelodysplastic Syndromes ; blood ; immunology ; pathology ; Receptors, Transferrin ; immunology ; Sialic Acid Binding Ig-like Lectin 3

In this paper, chloramphenicol was selected as a model drug to prepare in situ gels. The intrinsic dissolution rate of chloramphenicol from in situ gel was evaluated using the surface dissolution imaging system. The results indicated that intrinsic dissolution rate of chloramphenicol thermosensitive in situ gel decreased significantly when the poloxamer concentration increased. The addition of the thickener reduced the intrinsic dissolution rate of chloramphenicol thermosensitive gel, wherein carbomer had the most impact. Different dilution ratios of simulated tear fluid greatly affected gel temperature, and had little influence on the intrinsic dissolution rate of chloramphenicol from the thermosensitive in situ gel. The pH of simulated tear fluid had little influence on the intrinsic dissolution rate of chloramphenicol thermosensitive in situ gel. For the pH sensitive in situ gel, the dissolution rates of chloramphenicol in weak acidic and neutral simulated tear fluids were slower than that in weak alkaline simulated tear fluid. In conclusion, the intrinsic dissolution of chloramphenicol from in situ gel was dependent on formulation and physiological factors. With advantages of small volume sample required and rapid detection, the UV imaging method can be an efficient tool for the evaluation of drug release characteristics of ophthalmic in situ gel.
Acrylic Resins ; chemistry ; Anti-Bacterial Agents ; administration & dosage ; chemistry ; Chloramphenicol ; administration & dosage ; chemistry ; Drug Delivery Systems ; Gels ; chemistry ; Hydrogen-Ion Concentration ; Ophthalmic Solutions ; chemistry ; Poloxamer ; chemistry ; Solubility ; Spectrophotometry, Ultraviolet ; Temperature ; Viscosity

OBJECTIVETo study the effect of aldose reductase (AR) on expression of fibronectin and collagen IV in cultured rat renal mesangial cells (MsC).

METHODSAR expression plasmid vector (pCDNA3-AR) was constructed by restriction endonuclease digestion and ligation procedures. Stable expression of AR in MsC was established by Lipofectin transfection. Western blot and immunofluorescence analyses were performed to verify the transfection efficiency. Expression of fibronectin and collagen IV proteins were analyzed using Western blot.

RESULTSExpression of fibronectin and collagen IV in naive MsC treated with TGF-beta1 was upregulated in comparison to that of the untreated naive MsC (P < 0.01). MsC transfected with pCDNA3-AR showed a remarkable increase of expression of fibronectin and collagen IV (P < 0.01). Aldose reductase inhibitors (Sorbinil and Zopolrestat) significantly inhibited the expression of fibronectin and collagen IV in naive MsC (P < 0.05).

CONCLUSIONSOverexpression or inhibition of AR activity significantly alters the expression of fibronectin and collagen IV proteins in cultured rat MsC, suggesting that AR plays a significant role in the pathogenesis of glomerulosclersis.

Aldehyde Reductase ; antagonists & inhibitors ; genetics ; metabolism ; Animals ; Benzothiazoles ; pharmacology ; Cells, Cultured ; Collagen Type IV ; metabolism ; Fibronectins ; metabolism ; Genetic Vectors ; Imidazolidines ; pharmacology ; Mesangial Cells ; metabolism ; Phthalazines ; pharmacology ; Plasmids ; Rats ; Recombinant Proteins ; genetics ; metabolism ; Transfection ; Transforming Growth Factor beta1 ; pharmacology