ABSTRACT
To give full play to the important role of courses for ideological and political education in moral cultivation, teaching group in the course of oral histology and pathology in Zhejiang University systematically studied the teaching model of which ideological and political education integrated into the course of oral histology and pathology, and put forward a quality evaluation index system of the course. This paper emphatically introduces the general framework of the course, as well as the experience and practices in the aspects of resource mining, teaching design, curriculum evaluation, etc. The quality of the course was evaluated by using the system, which showed that the grade of the course was AAA (excellent) and 95.5% (275/288) students agreed to integrate ideological and political content into the course. The teaching group believes that the integration of the ideological and political content in the course reflects the complementary effect of "teaching" and "educating", and the ideological and political quality as well as the professional level of the teachers are the primary factor to determine the quality of the course. This paper aims at providing a reliable reference for promoting the construction of courses for ideological and political education in the area of oral medical education.
ABSTRACT
Krüppel-like transcription factor 2 (KLF2) plays a key regulatory role in endothelial inflammation, thrombosis, angiogenesis and macrophage inflammation and polarization, and up-regulation of KLF2 expression has the potential to prevent and treatment atherosclerosis. In this study, trichostatin C (TSC) was obtained from the secondary metabolites of rice fermentation of Streptomyces sp. CPCC 203909 as a KLF2 up-regulator by using a high throughput screening model based on a KLF2 promoter luciferase reporter assay. TSC significantly inhibited the adhesion of tumor necrosis factor-α (TNFα) induced monocytes (THP-1) to human umbilical vein endothelial cells (HUVECs). Western blot results showed that TSC decreased TNFα induced the protein expression increase of vascular cell adhesion molecule-1 (VCAM-1), and thereby inhibited endothelial inflammation. The results of histone deacetylase (HDAC) overexpression and molecular docking experiments showed that TSC upregulated the expression of KLF2 by inhibiting subtypes of HDAC 4/5/7. In conclusion, this study suggests that TSC up-regulates the expression of KLF2 through inhibiting HDAC 4/5/7 and thus inhibits TNFα induced endothelial inflammation, and it has the potential to prevent and treat atherosclerosis.
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Osteoprotegerin (OPG), secreted by osteoblasts, is a marker of bone turnover. OPG can inhibit osteoclastic differentiation by binding receptor activator of nuclear factor-κB ligand (RANKL). In this study, we found that rutaecarpine (RUT) had the up-regulating OPG activity, and it could significantly increase OPG protein levels in both mouse embryonic osteogenic precursor MC3T3-E1 and human osteosarcoma U-2OS cells. Osteoblastogenic differentiation calcified nodules staining results showed that RUT significantly promoted the osteogenic differentiation of MC3T3-E1 cells. Osteoclastic differentiation tartrate resistant acid phosphatase (TRAP) staining results showed that RUT obviously inhibited the osteoclast differentiation of mouse macrophages RAW264.7 induced by RANKL. In vivo studies showed that low-dose RUT group (5 mg·kg-1·day-1) and high-dose RUT group (45 mg·kg-1·day-1) treatments for 3 months significantly increased bone density in ovariectomized (OVX) rats; calcein double labeling experiment and toluidine blue staining results indicated that low-dose RUT group promoted bone formation and decreased bone loss in vivo; immunohistochemistry results showed that low-dose RUT group increased the expression of OPG in rat femur. All animal procedures were performed in accordance with the regulations of the Institutional Animal Care and Use Committee of Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences. In summary, this study demonstrated that RUT could up-regulate OPG expression and had promoting osteoblastic differentiation and inhibiting osteoclastic differentiation effects in vitro and in vivo.
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The purpose of this research is to study the anti-atherosclerotic effects and mechanisms of berberine (BBR) in high fat diet (HFD) fed ApoE-/- mice, and then to lay a solid foundation of the clinical studies of BBR treatment. The hyperlipidemic ApoE-/- mice model was established by feeding HFD for 12 weeks. Mice were randomly divided into control group (chow diet), model group, BBR group (BBR-L: 50 mg·kg-1, BBR-H: 150 mg·kg-1) and atorvastatin (5 mg·kg-1) group. Mice were intragastric administration with BBR in 0.5% sodium salt of caboxy methyl cellulose. After 12 weeks, enface aortas were stained with oil red O, and the lesions area were analyzed by Image J software. The inflammatory factor levels were detected by suspension microarray kits. Liver total cholesterol (TC), triglyceride (TG) and free fatty acids (FFA) were determined by commercial kits. Western blot was performed to examine the inflammatory pathway related and cholesterol and lipid transport related proteins' expression. All animal experiments were performed in accordance with the Regulation on the Administration of Laboratory Animals of Institute of Medicinal Biotechnology. After 12 weeks treatment, compared with model group, BBR treatment significantly reduced the lesions area of en face aortas and obviously inhibited serum proinflammatory factors such as IL-1β and IL-6 compared with model group. In addition, BBR treatment obviously reduced liver TC, TG and FFA levels compared with model group. Furthermore, mechanic study showed that BBR significantly inhibited MAPKs and NF-κB pathways, and increased cholesterol and lipid regulated proteins expression such as p-AMPK, LDLR, ABCA1 and SR-BI. In conclusion, BBR can obviously reduce enface aortas lesions in ApoE-/- mice, which is related to inhibit inflammation and liver cholesterol and lipid accumulation.
ABSTRACT
Objective@#To explore the strategies of preserving urinary continence in transurethral plasmakinetic enucleation of the prostate (PKEP) for benign prostate hyperplasia (BPH).@*METHODS@#We treated 65 BPH patients by PKEP with preservation of urinary continence (UC-PKEP), which involved protection of the external urethral sphincter in the beginning of surgery, proper preservation of the anterior lobe of the prostate to protect the internal urethral sphincter in the middle, and preservation of the integrity of the bladder neck towards the end. We compared the postoperative status of urinary continence of the patients with that of the 54 BPH cases treated by complete plasmakinetic enucleation of the prostate (Com-PKEP).@*RESULTS@#All the operations were performed successfully with the urinary catheters removed at 5 days after surgery. In comparison with Com-PKEP, UC-PKEP achieved evidently lower incidence rates of urinary incontinence at 24 hours (31.49% vs 13.85%, P 0.05), and 3 months (3.70% vs 0%, P >0.05) after catheter removal. Compared with the baseline, the maximum urinary flow rate (Qmax) was significantly improved postoperatively in both the Com-PKEP (［7.43 ± 3.26］ vs ［20.58 ± 3.22］ ml, P <0.05) and the UC-PKEP group (［8.04 ± 2.28］ vs ［20.66 ± 3.08］ ml, P <0.05).@*CONCLUSIONS@#Transurethral PKEP is a safe and effective method for the management of BPH, during which the strategies of avoiding blunt or sharp damage to the external urethral sphincter in the beginning, properly preserving the anterior lobe of the prostate in the middle and preserving the integrity of the bladder neck towards the end may help to achieve rapid recovery of urinary continence.
Subject(s)
Humans , Male , Organ Sparing Treatments , Methods , Postoperative Period , Prostatic Hyperplasia , General Surgery , Quality of Life , Transurethral Resection of Prostate , Methods , Treatment Outcome , Urethra , Urinary Bladder , Urinary Catheterization , Urinary IncontinenceABSTRACT
<p><b>OBJECTIVE</b>To study the expression of P63 in human salivary gland development and the existing of salivary gland stem cells.</p><p><b>METHODS</b>24 embryonic salivary gland samples in different stage, 10 normal salivary gland samples were collected. HE-stained and immunochemistry stain were used.</p><p><b>RESULTS</b>It could be seen on the HE-stained sections that the epithelial buds proliferated to form the epithelial branches and duct systems, finally the terminal cells differentiated into ductal, myoepithelial and acinous. During the development of salivary gland, the expression of P63 was gradually reduced. In normal adult salivary gland samples, the positive cell interspersed in the basal layer of intercalated duct, secretory duct and excretory duct.</p><p><b>CONCLUSION</b>P63 plays an important role in human salivary gland development. The result of our experiment shows the distributive characteristic of salivary gland stem cells, which exist abroad in bud stage, but decrease and only exist in the basal layer of ducts in normal adult salivary gland.</p>
Subject(s)
Adult , Humans , Cell Differentiation , Salivary GlandsABSTRACT
OBJECTIVE@#To explore the protective effect of octreotide on liver warm ischemia-reperfusion injury and its possible mechanism.@*METHODS@#Pringle's maneuver liver ischemia-reperfusion models were established. Forty eight male Sprague Daweley rats were randomly divided into a sham operation group (S group, n=16), an ischemia-reperfusion group (I/R group, n=16) and an octreotide preconditioning group (OPC group, n=16). ALT and AST in the serum were measured at 30 min after the ischemia and 120 min after the reperfusion. The histomorphological changes and ultrastructure of hepatocellular were observed by optic and transmission electronic microscope. Hepatic adenine nucleotide levels and energy changes (EC) were determined by high performance liquid chromatography (HPLC).@*RESULTS@#(1) At 30 min after the ischemia and 120 min after the reperfusion, the levels of ALT and AST in the serum of OPC group was lower than those in I/R group, whereas the levels of ATP and EC in the hepatic tissue were higher than those in the I/R group (P<0.01 or P<0.05). Compared with the I/R group, the injury of hepatocellular histomorphology and ultrastructure in the OPC group was abated. (2) At 30, 60, and 120 min after the reperfusion, the levels of ATP and EC in the OPC groups were higher than those in the I/R group. During the ischemia, the levels of ATP and EC in the OPC group dropped more slowly than those in the I/R group, but ATP and EC in the OPC groups rose more quickly than those in the I/R group during the reperfusion.@*CONCLUSION@#Octreotide precondition can improve the hepatocellular energy reserve, and protect the liver from warm ischemia-reperfusion injury. The protective of octreotide on warm ischemia-reperfusion injury may be related to its influence on endocrine secretion.
Subject(s)
Animals , Male , Rats , Hot Temperature , Liver , Octreotide , Pharmacology , Therapeutic Uses , Protective Agents , Pharmacology , Therapeutic Uses , Random Allocation , Rats, Sprague-Dawley , Reperfusion InjuryABSTRACT
<p><b>OBJECTIVE</b>To study the expressions of matrix metalloproteinase 2 (MMP2) and E-cadherin (E-CD) in salivary mucoepidermoid carcinoma, and their relationship with clinical stages, pathological grading, lymph node metastasis and prognosis.</p><p><b>METHODS</b>Surgical specimens of salivary mucoepidermiod carcinoma and normal salivary gland tissue were collected. MMP-2 and E-CD were stained immunohistochemically with streptavidin peroxidase method.</p><p><b>RESULTS</b>The expression of MMP-2 was increased and the expression of E-CD was reduced or negative in salivary mucoepidemoid carcinoma compared with those of the normal salivary gland. Expression of MMP-2 and E-CD was closely correlated with lymph node metastasis of the mucoepidermoid carcinoma. MMP-2 was positively correlated with the prognosis of mucoepidermoid carcinoma, and E-CD was negatively correlated to the prognosis of mucoepidermoid carcinoma.</p><p><b>CONCLUSION</b>The expression of MMP-2 and E-CD is closely correlated with the metastasis and prognosis of salivary mucoepidermoid carcinoma.</p>
Subject(s)
Humans , Cadherins , Genetics , Carcinoma, Mucoepidermoid , Metabolism , Pathology , Matrix Metalloproteinase 2 , Genetics , Neoplasm Invasiveness , Neoplasm Metastasis , Prognosis , Salivary Gland Neoplasms , Metabolism , PathologyABSTRACT
<p><b>OBJECTIVE</b>To study the clinicopathological features and diagnostic criteria of Ewing's sarcoma/primitive neuroectodermal tumor (Ewing's sarcoma/PNET) in oral and maxillofacial region.</p><p><b>METHODS</b>There were 15 patients with Ewing's sarcoma/PNET in the last 35 years at our hospital, aged 1-49 years and mean 14.5 years. The most common manifestation was swelling of the affected region. The cases were analyzed and histological and immunohistochemical studies were also conducted to examine CD99 (12E7), Vimentin, NSE, S-100, Syn, CD45 (LCA), desmin.</p><p><b>RESULTS</b>(1) The most common histological pattern of Ewing's sarcoma/PNET was a lobular arrangement of uniform, small, hyperchromatic cells in a fibrous background. Some of these tumors were rich in cytoplasmic glycogen. (2) Of the 7 cases, IHC was positive for CD99 (12E7) and Vimentin and negative for lymphoid (CD45), muscle (desmin) markers. S-100 was positive in 4 cases and NSE negative in 3, Syn positive in 1. NSE, S-100, Syn were all negative in 2 cases.</p><p><b>CONCLUSIONS</b>Ewing's sarcoma/PNET is more common in teenagers and young people. Immunohistochemistry is essential to distinguish Ewing's sarcoma/PNET from other small round cell tumors. Immunohistochemistry is useful in the diagnosis.</p>
Subject(s)
Adolescent , Adult , Child , Child, Preschool , Female , Humans , Infant , Male , Middle Aged , Young Adult , Diagnosis, Differential , Facial Neoplasms , Diagnosis , Pathology , Jaw Neoplasms , Diagnosis , Pathology , Neuroectodermal Tumors, Primitive, Peripheral , Diagnosis , Pathology , Sarcoma, Ewing , Diagnosis , PathologyABSTRACT
<p><b>OBJECTIVE</b>To explore the correlation between neck lymph node metastasis and matrix metalloproteinase-2 expression at the invasive tumor front of oral squamous cell carcinomas(OSCC).</p><p><b>METHODS</b>Immunohistochemistry LsAB technique was used to observe the expression of MMP-2 at the invasive tumor front and center of OSCC, and the correlation between the expression of MMP-2 in OSCC and neck lymph node metastasis were respectively analyzed by statistics.</p><p><b>RESULTS</b>The results demonstrated that MMP-2 existed in all 71 cases, which the expression of MMP-2 at the OSCC front was more significant than that of MMP-2 at the OSCC center (P < 0.01), and related to neck lymph node metastasis (P < 0.05).</p><p><b>CONCLUSION</b>The expression of MMP-2 at the OSCC front could be considered as an index of judging the present of neck lymph node metastasis of OSCC.</p>
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Carcinoma, Squamous Cell , Immunohistochemistry , Lymph Nodes , Pathology , Lymphatic Metastasis , Matrix Metalloproteinase 2 , Mouth Neoplasms , Pathology , Neoplasm InvasivenessABSTRACT
<p><b>OBJECTIVE</b>To analyse the clinical and pathological characteristics of minor salivary gland tumors.</p><p><b>METHODS</b>A retrospective analysis on 615 cases of intraoral minor salivary gland tumors from 1990-2002 with a confirmed pathologic diagnosis was carried out.</p><p><b>RESULTS</b>In 615 cases of minor salivary gland tumors, 265 cases were benign, 350 cases malignant. Pleomorphic adenoma was the most common entity and accounted for 81.1% of all benign tumors. Adenoid cystic carcinoma comprised 32.9% of the malignant sample and was the most frequent malignant tumor. The principal location was the palate. Female was a little more of the benign and a male prevalence was observed on the malignant tumor. The mean age of patients with benign and malignant tumors were 40.9 and 49.1 years old, respectively (P < 0.05).</p><p><b>CONCLUSION</b>We consider extraordinary manifestation as histopathology, tumor, primary location, age and sex, presenting the results of a review of our experience with those minor salivary gland tumors.</p>
Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Child, Preschool , Female , Humans , Male , Middle Aged , Adenoma, Pleomorphic , Pathology , Age Factors , Carcinoma, Adenoid Cystic , Pathology , Retrospective Studies , Salivary Gland Neoplasms , Pathology , Salivary Glands, Minor , Pathology , Sex FactorsABSTRACT
<p><b>OBJECTIVE</b>To investigate the presence of HPV infection of oral mucosa proliferative lesions in children and determine the associations of HPV types with oral mucosa lesions in children.</p><p><b>METHODS</b>Immunohistochemical method and in situ hybridization techniques were applied to detect human papillomavirus (HPV) infection in biopsies taken from clinical lesions in oral mucosa of 30 children.</p><p><b>RESULTS</b>The most frequent lesions detected were SCP (66.7%), followed by CA and FEH. The HPV viral antigen was present in 73.3% (22/30) of the oral benign epithelial proliferative lesions in children. A high frequency HPV was found in CA (6/6) and SCP (15/20) by means of IHC. In the ISH positive case, high risk HPV 16/18 was observed in 77.3% (17/22).</p><p><b>CONCLUSION</b>This study demonstrates a high prevalence of HPV infection in children's oral mucosa proliferative lesions, and high-risk HPV16/18 are predominant in children's oral mucosa proliferative lesions.</p>