ObjectiveTo retrospectively analyze the relationship between clinicopathological,biological characteristics and the outcome of renal cell carcinoma(RCC) and evaluate the risk factors related to metastasis in young patients.MethodsThe data of 83 RCC patients younger than 40-year-old, treated from January 1986 to December 2007 in Tianjin Cancer Hospital,were analyzed retrospectively.The complete follow-up data of the 83 cases were collected.The operative methods included partial and radical surgery.Clinical staging were consistent with the 2004 UICC TNM classification criterion.The histological sections were reviewed.Various biological factors including VEGFR-1, VEGFR-2, VEGFR-3, PDGFR-α, PDGFR-β, c-kit and PCNA were tested by immunohistochemistry staining.The adjuvant radiation therapy, chemotherapy and immunotherapy after operation were carried out on the basis of pathological and biological features.The 83 cases were divided into two groups according to metastasis and non-metastasis status within 5 years.The prognosis related factors including clinical factors, pathological and biological factors were evaluated.Chi-square test was used for the analysis of 5-years metastasis status; and multivariate analysis was carried out using Cox proportional hazards models to assess the independent effect of the metastasis factors (the test standard α = 0.05).ResultsThe 5-year follow-up data showed that the metastasis rate in the 83 cases was 16.87％ (14/83).The Chi-square test results indicated that the patients with clinical stage Ⅲ and grade 3 had the highest metastasis rate (57.14％ and 78.57％respectively,x2 =38.042, x2 = 9.820; Ps ＜ 0.01) .The VEGFR-3 and PCNA positive expression rates were 92.86％ and 85.71％ respectively in metastasis group.The metastatic risk of early stage patients was 3.444 times as much as the advanced stage patients.ConclusionThe young patients with clinical advanced renal cell carcinoma had worse outcome.The stage,grade, VEGFR-3 and PCNA expression were the risk factors correlated with the metastasis risk for young RCC patients.TNM stage was an independent predictive risk factor of metastasis in young patients.

The completion of human genome project and the progress in medical practice have inevitably lead to the development of precision medicine, which is a medical model that proposes the customization of medical care including medical decisions, practices, and/or medical products with patient's genetic background, environmental factors and life behavior being taken into account. The current work proposed precision stomatology for the first time, and by integrating data reported in recent literature, we described the current practice of precision stomatology in multiple disciplines in modem dentistry. The clinical significance of precision stomatology and its future challenges have also been discussed.
Dentistry ; Humans ; Oral Medicine

Background and purpose:Exploration of the effective early diagnostic and prognostic markers of non-small cell lung cancer (NSCLC) has important scientiifc signiifcance and clinical value. Recently, the role of long chain non-coding RNA (lncRNA) in the tumor attracts widespread attention. This study intended to investigate the level of lncRNA HOTTIP in NSCLC, the effect of HOTTIP on cell proliferation and its mechanisms.Methods:Expression of lncRNA HOTTIP in tumor and their matched non-tumor tissues were determined by quantitative real-time PCR (qRT-PCR) in NSCLC patients. Then, we analyzed the potential correlation of lncRNA HOTTIP expression levels in tumor tissues with clinicopathological features of NSCLC and clinical outcome. The effects of HOTTIP on NSCLC cell proliferation and apoptosis were tested usingin vitro MTT and lfow cytometric assays. Western blot method was uesd to detect the expressions of proteins.Results:LncRNA HOTTIP expression level was signiifcantly decreased in NSCLC tissues in comparison to adjacent non-tumor tissues (P<0.05). It was also proved that HOTTIP expression was associat-ed with NSCLC histological grade and lymph node metastasis. Moreover, knockdown of HOTTIP expression in A549 cell line decreased proliferation and enhanced apoptosis compared with transfected negative control. Western blot assay showed that the level of Bax protein was signiifcantly increased, whereas Bcl-2 was signiifcantly decreased in HOT-TIP-silencing A549 cell.Conclusion:HOTTIP is a novel prognostic biomarker and a potential therapeutic candidate forNSCLC.

Objective To explore the value of free anterolateral thigh flaps in the reconstruction of maxillofacial defects after resection.Methods Patients were recruited from January,2008 to March,2016 in the Department of Oral and Maxillofacial Surgery of Nanjing University.All patients sunder when reconstructive surgery employing anterolateral thigh myocutaneous flaps follow-up of 3 months to 84 months after operation.Results Among 422 cases,survived completely with satisfied configuration,the survival rate was 98.6％.Postoerative vessel thrombosis occurred in flaps,21 patients required operative exploration in the perioperative period including 10 flaps with thrombotic events and 11 flaps with venous thrombosis were complete survival after the salvages,and 6 flaps were failure.The mean follow-up was 36.5 months (range:3 to 84 months).Conclusion The free anterolateral thigh flap is an ideal choice for reconstruction of maxillofacial defects,as it has many advantages such as abundance volume,easily molding and adjusting the thickness,possessing,long vascular pedicle,composition need to be adjusted according to defects,easily concealed donor site,and little donor site complications and malformation.

Adenocarcinoma ; metabolism ; pathology ; surgery ; ultrastructure ; Aged ; Carcinoembryonic Antigen ; metabolism ; Carcinoma, Neuroendocrine ; metabolism ; pathology ; surgery ; ultrastructure ; Cardia ; Humans ; Ki-67 Antigen ; metabolism ; Male ; Microscopy, Electron, Transmission ; Stomach Neoplasms ; metabolism ; pathology ; surgery ; ultrastructure ; Synaptophysin ; metabolism

To sequence the gene encoding glutamate rich protein (GLURP) and identify the genotypes of geographically different Plasmodium falciparum (P. f ) isolates from China. Methods The gene of R2 repeat region of GLURP was amplified by nested polymerase chain reaction and cloned into T-vector. The nucleotide sequence of GLURP gene was determined by automatic sequencer (Dideoxy termination method) and analyzed by DNA Star software. Results At least 7different GLURPgenotypesranging from 600 bp to 1 500 bp were found in Yunnan and Hainan provinces. R2 region of GLURP gene consisted of several repeat units. Each repeat unit was composed of 19-20 residues which were shown to be highly conserved. GLURP gene was also size polymorphic due to differences in the number of repeat units, whereas the repeat sequence was conserved. Sequence analysis showed that DNA sequences and deduced amino acid sequences were highly homologous among the geographically dispersed isolates or various isolates from the same geographical region. No obvious differences were found in the GLURP gene sequences among geographically different isolates. Conclusion GLURP gene is highly structure conserved and size polymorphic, and so is useful in searching for malaria vaccine candidate antigen and developing a genotyping method for malaria research.

Objective: To explore the consumption of sugar sweetened beverages (SSBs) and its association with behavioral problems in Chinese preschool children, and to provide a scientific basis for the prevention of behavioral problems of children. Methods: A total of 7 634 children aged 3-6 years were chosen from kindergartens in 3 cities (Yangzhou, Xuzhou, Zhenjiang) in the lower reaches of Yangtze River using method of cluster sampling during October to November in 2017. Parental or guardian questionnaires were used to obtain information regarding child consumption of SSBs. The Strengths and Difficulties Questionnaire (SDQ) was used to assess children s emotional and behavioral problems. Multivariate Logistic regression model was used to explore the association between different SSBs intake frequency and children s behavioral problems. Results: A total of 5 509(72.2%) consumed SSBs less than once a day, 830(10.9%) reported SSBs consumption once a day, and 1 295(16.9%) had 2 times or more intake of sugar sweetened beverages per day. After adjusting for confounding factors including age, sex, BMI, family financial status, parental education, screen time, sleep duration, and physical activities duration, multiple Logistic regression model revealed that intake of SSBs once a day was associated with an increased risk of hyperactivity disorder ( OR =1.26, 95% CI =1.01-1.57) and SDQ total difficulties ( OR =1.44, 95% CI =1.14-1.82) in boys and with an increased risk of emotional symptoms ( OR=1.34, 95%CI =1.02-1.76), conduct problems ( OR=1.53, 95%CI =1.18-2.00), hyperactivity disorder ( OR=1.79, 95%CI =1.42-2.27) and prosocial behavior ( OR=1.48, 95%CI =1.14-1.91) in girls. Intake of SSBs≥2 times per day was associated with an increased risk of emotional symptoms ( OR=1.28, 95%CI =1.02-1.59) and SDQ difficulties ( OR=1.30, 95%CI =1.07-1.58) in boys and not with behavioral problems in girls. Conclusion Sex differences are observed with respect to the association between SSBs intake and behavioral problems in preschoolers, but no significant dose response relationship was observed. More longitudinal studies are needed to further explore the association between SSBs intake and behavioral problems in preschool children as well as the underlying physiological mechanisms in future.

Objective To build a foundation for determination of C reaction protein,C reaction protein was expressed and purified,and the immune reactivity of the purified protein was identified.Methods The CRP cDNA was amplified by RT-PCR from human liver cDNA library and inserted into expression vector pCRTT/NT.The recombined plasmid CRP-pCRTT/NT which expressed the fusion protein of CRP was then transferred into lysogenic host strain E coli.BL21 (DE3).The target protein was identified using SDS- polyacrylamide gel electrophoresis (SDS-PAGE).Affinity chromatography was used for protein purification.The immune reactivity of purified CRP was identified by Western blot using anti-CRP specific antibody.Results Recombiant human CRP was expressed in inclusion bodies of E.coli with a six histamine tag.The purify of recombinant protein was detected by SDS-PAGE as a single band at 30 000 and was identified by Western blot.Conclusions A plasmid expressed CRP protein is constructed and the purification system of CRP protein is established.The immune reactivity of the purified protein is identified by Western blot,which makes a good base for the preparation of CRP test kit.

OBJECTIVETo evaluate remineralization efficacy of an arginine containing dentifrice on initial enamel carious lesions in vitro.

METHODSHuman enamel blocks with early lesions were prepared and randomly divided into three treatment groups: negative control group (distilled and deionized water), positive control group (fluoride containing dentifrice and 0.14% sodium monofluorophosphate), and test dentifrice group (8.0% arginine and 0.14% sodium monofluorophosphate). The lesions were subjected to a pH-cycling regime for 10 days. Surface enamel microhardness of the enamel blocks from each group was measured before and after pH cycling, and the surface microhardness recovery was calculated. Then, specimens were analyzed for enamel fluoride uptake (EFU) through acid etching method, after which they were treated in demineralization solution for a 2 h period of acid challenge. The other specimens were sectioned and examined through polarized light microscopy.

RESULTSIn the test dentifrice group, microhardness recovery and EFU were significantly higher than those in the negative control and positive groups. The test dentifrice group was significantly resistant to the acid challenge compared with the other groups. Conspicuous remineralization of enamel subsurface lesions was observed under polarized light microscopy among samples treated with test dentifrice, whereas the control groups showed no significant changes on enamel subsurface lesions.

CONCLUSIONThis study presents the potential superiority of Pro-Argin dentifrice over conventional fluoride dentifrice in promoting the remineralization of initial enamel lesions.

Arginine ; Calcium Carbonate ; Cariostatic Agents ; Dental Caries ; Dental Enamel ; Dentifrices ; Fluorides ; Hardness ; Humans ; Phosphates ; Tooth Demineralization ; Tooth Remineralization

OBJECTIVETo investigate the use value of picrosirius red staining plus polarized microscopy to observe the dynamic changes of collagen fiber in lung fibrosis in silicotic mice model.

METHODSThe experimental mice were divided into control and quartz groups. 0.2 g/kg weight of quartz was injected intratracheally in quartz group. Lung tissues were collected at the 1st, 3rd, 5th, 7th, 14th and 28th day after injection respectively. Lung tissue slides were stained with picrosirius red. With the aid of polarized microscope, image analysis software, the distribution and change of type I and type III collagen could be qualitatively and quantitatively analyzed. Lung tissue hydroxyproline was determined by chloramines T method.

RESULTSIn early stage the predominant increment was type III collagen, but in late stage type I was predominant. The contents of both type collagen tended to increase as postexposure time prolonged. The time course of the ratio of type I to type III showed increasing trend, and there was a statistical significance on day 28 (1.49 +/- 0.39 vs 0.59 +/- 0.24, P < 0.05). The total area of collagen was positively correlated with hydroxyproline concentration of lung tissue (r(2) = 0.928 5, P < 0.01).

CONCLUSIONPicrosirius red staining combined with polarized microscopy and digital image processing is a useful method to elucidate collagen accumulation, distribution and subtype ratio in silicosis.

Animals ; Azo Compounds ; Collagen Type I ; metabolism ; Collagen Type III ; metabolism ; Coloring Agents ; Hydroxyproline ; metabolism ; Lung ; metabolism ; pathology ; Male ; Mice ; Mice, Inbred Strains ; Microscopy, Polarization ; Pulmonary Fibrosis ; chemically induced ; metabolism ; pathology ; Quartz ; toxicity ; Staining and Labeling