Research progress on dental materials for preventing root caries / 口腔疾病防治

@#The high incidence and untreated rate of root caries, a common and frequently occurring oral disease with challenging treatment in elderly individuals, is the main cause of tooth loss among elderly people, as rapid development results in pulpitis and periapical periodontitis or residual crown and root, which has been regarded as one of the common chronic oral diseases seriously affecting the quality of life of elderly people. Thus, early intervention and prevention are important. Traditional dental materials for preventing root caries have been widely used in clinical practice; however, they have the disadvantages of tooth coloring, remineralization and low sterilization efficiency. A series of new dental materials for preventing root caries have gradually become a research hotspot recently, which have the advantages of promoting the mineralization of deep dental tissue, prolonging the action time and enhancing adhesion. Future caries prevention materials should be designed according to the characteristics of root surface caries and the application population and should be developed toward simplicity, high efficiency and low toxicity. This review describes current research regarding anti-caries prevention material application, serving as a theoretical underpinning for the research of root caries prevention materials, which is important for both promotion in the effective prevention of root caries and improvement in the status of oral health and the quality of life among old people.

Formulation and evaluation of Buccal mucoadhesive tablets of diclofenac sodium using 23 factorial designs

Buccal tablets

Diclofenac sodium

Drug release

Mucoadhesion

Mucoadhesive tablets

Release kinetics

Risk assessment of venous thromboembolism in emergency patients in Beijing / 中华急诊医学杂志

Objective:To assess the risk of venous thromboembolism (VTE) and anticoagulation-related bleeding of acute critical emergency patients staying in the emergency department at least 72 h, so as to improve the ability of emergency physicians to identify risk factors of VTE and their awareness of safety prevention in these patients.Methods:Multicenter emergency internal medicine patients meeting the inclusion criteria at the same time were collected. Padua and Caprini scores were used to evaluate the risk of VTE and the HAS-BLED score was used to assess the risk of anticoagulation-related bleeding.Results:A total of 930 emergency patients from 7 medical centers were enrolled in our study from January 15, 2021 to March 15, 2021. The proportion of high-risk population with VTE was 50.22% with Padua score and 78.49% with Caprini score, respectively. The proportion of high-risk bleeding (HAS-BLED score) was 40.43%.Conclusions:More than half of the acute critical ill patients who stay in emergency department for more than 72 h are at high risk of VTE. This group of patients have a relatively low risk of anticoagulation-related bleeding.

OMICRON (B.1.1.529) SARS-CoV-2 variant-Latest addition in the battle ground!!!

Background: Fungal colonisation of airways in Post TB patients, can lead to a spectrum of diseases based on the immune response of the host. This study was aimed at studying the different entities of this spectrum. Methods: A cross sectional observational study was conducted over 100 patients of post TB patients to make an observation of the diseases of the spectrum of Aspergillus infections. Results: Of the 100 patients who were studied, IPA was found in 24 (48%), ABPA in 13 (26%), CPA in 5 (10%) patients out of the 50 diabetics. ABPA in 23 (46%) patients, Simple colonization, CPA in 11 (22%) and 4 (8%) patients showed IPA out of the 50 non-diabetics. Conclusion: Chronic pulmonary Aspergillosis was the most common disease from Aspergillus among Post TB patients. Diabetes was associated with invasive forms of Aspergillosis, Invasive Pulmonary Aspergillosis (IPA) and subacute invasive pulmonary aspergillosis (SAIA).

Compare outcome in patients of ileostomy and colostomy closure with surgical stapler versus ileostomy and colostomy closure with hand sewn anastomosis: a prospective study

Background: Diverting temporary stoma is created to protect the primary bowel pathology and distal anastomosis. Once that primary pathology has been overcome or distal anastomosis gets healed, closure of temporary stomas can be carried out. Invention of stapling devices for intestinal anastomosis provided another dimension than hand sewn method to the stoma closure techniques. In this study, we have compared two methods of loop stoma closure-hand sewn method versus stapler method.Methods: This is prospective comparative study in which 50 cases of loop ileostomy/colostomy were taken. 25 patients underwent ileostomy/colostomy closure by hand sewn anastomosis (group A). Another 25 patients underwent ileostomy/colostomy closure by stapler anastomosis (group B). Time taken for operation, initiation of oral intake, anastomotic leak, post-operative wound infection and total hospital stay duration were compared between these two groups to conclude about which method is superior and in the best interest of patient and surgeon.Results: Mean operation time 105.96 minutes (group A) and 72.84 minutes (group B). Mean time to start oral intake 5.36 days (group A), 3.6 days (group B). 16% patients (4/25) group A and 4% patients (1/25) group B developed anastomotic leak. 28% patients (7/25) group A and 8% patients (2/25) group B had post-operative wound infection. Mean hospital stay 10.4 days in group A and 7.84 days in group B.Conclusions: Stapler method provides significant benefits in terms of less operative time, early oral intake and less hospital stay. Overall stapler method for stoma closure is more efficient and cost effective.

An evaluation of safety and efficacy of nadifloxacin 1% ointment versus mupirocin 1% ointment in Indian children with skin and soft tissue infection

Background: Although nadifloxacin has been shown to be effective in the treatment of skin & soft tissue infections (SSTI), there is a paucity of data comparing its efficacy and safety with other antibacterials, especially in Indian paediatric population. Therefore, objective of this study was to compare the safety and efficacy of nadifloxacin with mupirocin in children with SSTI.Methods: This was a single-centre, open label, randomized, parallel group, comparative study in 60 children of <12 years of age with SSTI. Test group (n=30) received nadifloxacin 1% ointment and reference group (n=30) received mupirocin 1% ointment, to be applied twice daily. Patients were followed up at day 4, 8 and 15. Efficacy of the study drugs was evaluated by clinical and bacteriological cure rate. Safety was assessed by reporting of adverse events.Results: Baseline characteristics of enrolled patients were comparable between treatment groups and all 60 patients completed the study. At Day 15, 100.0% cases among nadifloxacin group and 96.7% cases among mupirocin group achieved clinical cure (p=0.313). The most common bacteria found in culture were Gram positive cocci in both the groups (86.7% in nadifloxacin and 58.8% in mupirocin group). None of the cases in any of the groups showed bacteriological presence at day 15. No adverse event was reported in any of the treatment groups during the study duration.Conclusions: Nadifloxacin was found to be equally efficacious and safe to mupirocin in the treatment of SSTI in Indian pediatric population.

Evaluation of I-JS001 for hPD1 immuno-PET imaging using sarcoma cell homografts in humanized mice

JS001 (toripalimab) is a humanized IgG monoclonal antibody which strongly inhibits programmed cell death protein 1 (PD1). In this study, we used a different iodine isotype (I) to label JS001 probes to target the human PD1 (hPD1) antigen. , the half maximal effective concentration (EC) value of I-JS001 did not significantly differ from that of JS001. The uptake of I-JS001 by activated T cells was 5.63 times higher than that by nonactivated T cells after 2 h of incubation. The binding affinity of I-JS001 to T cells of different lineages after phytohemagglutinin (PHA) stimulation reached 4.26 nmol/L. Humanized C57BL/6 mice bearing mouse sarcoma S180 cell tumors were validated for immuno-positron emission tomography (immuno-PET) imaging. Pathological staining was used to assess the expression of PD1 in tumor tissues. The homologous Ihuman IgG (IhIgG) group or blocking group was used as a control group. Immuno-PET imaging showed that the uptake in the tumor area of the I-JS001 group at different time points was significantly higher than that of the blocking group or the I-hIgG group in the humanized mouse model. Taken together, these results suggest that this radiotracer has potential for noninvasive monitoring and directing tumor-specific personalized immunotherapy in PD1-positive tumors.

Importance of HAS-Bled Score in Patients on Warfarin Therapy for Atrial Fibrillation

Introduction: Bleeding is a significant complication whenpatients are on anticoagulant therapy. The risk of bleedingoverall when anticoagulant therapy is used is 3.8%. A numberof risk factors are associated with increased bleeding whenpatients are on anticoagulants. A practical risk score HASBLED score was developed to estimate 1year risk for majorbleeding in patients with atrial fibrillation. This study aimedto understand to assess the relevance of HAS-BLED scorein predicting bleeding in patients coming to AJ institute ofmedical sciences.Material and methods: We conducted a case control studyin patients on Warfarin therapy for Atrial fibrillation whopresented with major bleeding manifestations betweenSeptember2017-2018 in a tertiary care centre in AJ InstituteOf Medical Sciences in South India. Patients or their medicalpower of attorneys provided written informed consent. Atotal no of 100 patients were enrolled based on the inclusioncriteria patients aged more than 18 years. They were groupedinto cases who had bleeding and controls who did not havebleeding. HAS BLED score was calculated. The data wasentered in Microsoft Excel and was analysed with SPSSResults: Total of 100patients (50cases and 50controls) werestudied. On analysing the HAS-BLED score the P valueshowed significant difference between the case and controlgroups. The sensitivity was 80% and specificity was 68%. Thepositive and negative predictive value of HAS-BLED valueswere 71.4% and 77.27% respectively.Conclusion: Our study emphasises the need for making betteruse of HAS-BLED score in predicting bleeding and the needfor monitoring the INR regularly and educating patients onWarfarin therapy about frequent monitoring, the risks ofbleeding and to seek early medical attention on developingbleeding.

The risk assessment of atrial fibrillation / Монголын Анагаах Ухаан

Introduction@#Although we have known for almost last few years that Atrial fibrillation has been increasing by patients in Mongolia. Atrial fibrillation, the most common sustained chronic arrhythmia, with atrial rates of 200-500 beats per minute in patients. Most patients atrial fibrillation have structural heart disease such us mitral stenosis or regurgitation, acute myocardial infarction, Wolff-Parkinson-White syndrome, thyrotoxicosis, recent cardiothoracic surgery, cardiomyopathy, myocarditis or pulmonary disease. Atrial Fibrillation increases the risk of stroke, thromboemboli and mortality of adults with structural heart disease [4]. The symptoms most frequently reported by patients with atrial fibrillation is a rapid, irregullar heartbeat, chest pain, shortness of breath, lightheadedness and dizziness.@*Goal@#For that reason we decided to research patients with atrial fibrillation who are treated by the inpatient cardiology department of General hospital of defense and Law Enforcement between 2010-2014 years.@*Conclusion@#</br> 1. The hospitalized patients are observed only 6 cases of atrial fibrillation in 2010 years, even though the prevalence of atrial fibrillation has been increasing 75 cases in 2014 years, as a result it developed 30% during 4 years in hospitalized patients </br> 2. CHA2DS2-VАSc score was high risk of stroke /62.5% of them /most patients with both paroxysmal and chronic atrial fibrillation should be anticoagulated to reduce the occurrence of thromboemboli </br> 3. HAS-BLЕD score has became highest rick of bleeding /32.7% of all patients. For the reason we should be select correctly drugs for patients an anticoagulation treatment and they are controled INR every month

Establishment of the PCR Amplification and Sequencing System of Hsa-miR-17 Gene Promoter Region / 现代检验医学杂志

Objective To establish the PCR amplification and sequencing system of Hsa-miR-17 gene promoter region.Methods To establish the PCR amplification and sequencing system of Hsa-miR-17 gene promoter region and evaluate its performance by analyzing the sequence characteristics,designing PCR and sequencing primers,extracting sample genome DNA from different human cell lines and using optimization strategy of adding DMSO to the final concentration of 5 ％ and making use of 5' tailed PCR primers;Then the established system was further verified in 10 other cell line samples.Results The PCR amplification and sequencing system of hsa-miR-17 gene promoter region,which had good repeatability,good specificity and its detection limit was 10 ng/μl,was established successfully under the condition of using 5' tailed PCR primers and 5 ％ DMSO and that was confirmed by electrophoresis analysis and Sanger sequencing.And fragment of Has-miR-17 gene promoter region in 10 human cell lines were successfully achieved and verified by this system.Conclusion The PCR system of Hsa-miR-17 gene promoter region was established successfully.

Relationship between lymphocyte subsets with infection and rejection after renal transplantation / 中华器官移植杂志

Objective To dynamically monitor the changes of peripheral blood lymphocyte subsets of renal transplant recipients and investigate the relationship between lymphocyte subsets with infection and rejection.Methods The clinical data of allogenic kidney transplantation recipients and living relative donors in the Department of Kidney Transplantation of the First Affiliated Hospital of Zhengzhou University were prospectively collected from June 2015 to December 2016.The data of lymphocyte subsets and other related indexes were obtained from renal transplant recipients and relatives of the same period.Results Sixty-four cases of living-relative donors and 351 cases of renal transplant recipients were enrolled in this study,and the recipients were divided into 3 groups:infection group (67 cases),acute rejection group (46 cases),and stable group (238 cases),according to the diagnostic criteria.There was significant difference in the concentration distribution of lymphocytes between the stable group and the control group (P<0.05).The stable frequency distribution range of the stable group was as follows (cells/μL):Lym (1 000-1 500),T (<1 500),CD4+ (<1 000),CD8+ (<1 000),B (<300),NK (100-300),CD4+/CD8+ (0.5-1.0).The number of Lym,T,CD4+,CD8+,NK and B cells in the preoperative patients was less than that in the healthy population (P<0.05);The number of Lym,T,CD4+, CD8+,B and NK cells was gradually decreased in the postoperative infection group,which was less than that in the stable group (P<0.05).After treatment the indicators gradually restored to the level in the stable group level;the number of T,CD4+,CD8+,B cells was highly correlated with infection.The number of T and CD4+ cells,and CD4+/CD8+ ratio were significantly increased in acute rejection group as compared with the stable group,and gradually decreased after the rejection was reversed.The number of T,CD4+,CD8+ cells was highly correlated with rejection.Lymphocyte subsets had a predictive effect on infection and rejection of recipients,and CD4+ cell count and CD4+/CD8+ ratio were independent risk factors.Conclusion The monitoring of lymphocyte subsets has an important clinical value in the evaluation of immune status and individual treatment of renal recipients.

Effect of miR-146a on c-Myc gene expression in HepG2.2.15 cells / 重庆医学

Objective To construct the has-miR 146a eukaryotic overexpression vector pmR 146a and to explore its effect on the expression of c-Myc gene in HepG2.2.15 cells.Methods The has-miR-146a precursor gene fragment pre-has-miR-146a was amplified by PCR,then connected to the pmR-mCherry plasmid vector after double enzyme digestion,the accuracy of recombinant vector was verified by colony PCR,double enzyme digestion and sequencing;then the recombinant vector was transfected into HepG2.2.15 cells as the experimental group,meanwhile the empty vector group (transfecting pmR-mCherry empty plasmid group) and blank group(transfecting reagent lip2000+PBS),then the fluorescent protein expression amount was observed under the fluorescence microscopy at 24,48 h;the expression of has miR-146a was evaluated by qPCR;at 24,48 h after transfection,the expression levels of c-Myc gene mRNA were detected by qPCR,and the c-Myc protein expression level after 48 h was detected by Western blot.Results The colony PCR,double enzyme digestion and sequencing verified that the pre-has-miR-146a gene fragment was inserted into the pmR-mCherry vector;at 24,48 h after transfection in the experimental group and empty vector group,intracellular strong fluorescence was seen by fluorescent microscope,the transfection efficiency was at 50％-60％ contrasting without fluorescence;the has-miR-146a expression level in the experimental group was significantly higher than that in the empty vector group and blank group (P＜0.01);the c-Myc mRNA expression at 24,48 h after tranfection was significantly lower than that in the empty vector group and blank group (P＜0.05);the protein expression amount at 48 h after transfection was lower than that in the empty vector group and blank group (P＜0.01).Conclusion The pmR-146a eukaryotic overexpression vector is successfully constructed,this recombinant vector can express miR-146a stably;miR-146a can down-regulate c-Myc cancer gene expression,which can serve as one of potential targets for treating hepatocellular carcinoma.

Relationship of plasma levels of microRNA 491-5p and its target gene polymorphism with the prognosis of patients with premature coronary artery disease / 西安交通大学学报(医学版)

Objective To study the relationship of the plasma levels of miRNA-491-5p in Han population in Shaanxi Province and the changes of single nucleotide polymorphisms (SNP ) of the target gene matrix metalloproteinases-9 (MMP-9 ) of miRNA-4 9 1-5 p (has-miR-4 9 1-5 p ) with the incidence risk and prognosis of premature coronary artery disease (pCAD)through the case-control design.Methods In this study,we made a consecutive recruitment of 270 pCAD cases in the case group and 300 cases in the control group.Using the polymorphism method of polymerase chain reaction and restriction fragment length (PCR-RFLP),target gene MMP-9 of has-miR-491-5p and rs1056628 genotypes was detected to compare the association between the variant genotypes and pCAD.Results In the changes of rs1056628C-A polymorphisms,compared with that of CC genotypes (the incidence was 42%),the risks of having coronary heart disease in the individuals carrying CA and AA genotypes were 31%,the difference was statistically significant (P=0.045).The risks of developing coronary heart disease in the individuals carrying CA and AA genotypes were reduced more significantly in the population with low total cholesterol (TC),and low low-density lipoprotein cholesterol (LDL-C).Conclusion Target gene MMP-9 of has-miRNA-491-5p rs1056628C-A polymorphism is associated with the reduced incidence risk of pCAD,and carrying C alleles is an independent risk factor for pCAD.

Target genes of the hsa-miR-106b-25 cluster:Prediction and bioinformatic analysis / 医学研究生学报

Objective The hsa-miR-106b-25 gene cluster is involved in various biological processes of carcinoma .This study aims at a prediction and function analysis of the hsa-miR-106b-25 gene cluster, miR-106b, miR-93, and miR-25, so as to provide some evidence for further studies on the functions of the three miRNAs and the mechanisms of their interaction . Methods We obtained the sequences of miR-106b, miR-93, and miR-25 from the miRBase, predicted their target genes with TargetScan , PicTar, and miRanda, and used 3 or more experimentally verified target genes from the miRTarbase as the gene set for further bioinformatic analysis .We predic-ted the biological processes of the target genes by GeneOntology analysis and enriched KEGG ( Kyoto Encyclopedia of Genes and Genomes) by pathway analysis, produced protein-protein interaction ( PPI) networks with STRING . Results The target genes of the miR-106b-25 gene cluster were significantly enriched in such biological processes as the regulation of macromolecule metabolism , regulation of metabolic process , and cell cycle process , while the KEGG pathway mainly in glioma, melanoma, prostate cancer , and gallbladder carcino-ma.The proteins encoded by the targeted genes of showed complicated interactions , and those encoded by the KAT2B, PTEN, TP53, CDH1, MDM2, E2F1, RB1, and SMAD7 plaid a core role in the interac-tion network. Conc lusoi n MiRNAs of the miR-106b-25 gene cluster regulate the downstream target proteins involved in tumorigenesis by participating in the cell cycle and cancer signaling pathway .

Análise comparativa da reatividade anti-LID-1, NDO-LID, NDO-HSA e PGL-1 em hanseníase / Comparative analysis of the reactivity anti-LID-1, NDO-LID, NDO-HSA and PGL-1 in leprosy

A infecção subclínica pode ser avaliada por meio de teste sorológico, que determina imunoglobulinas circulantes. O objetivo do presente estudo foi analisar a reatividade de diferentes antígenos em casos novos de hanseníase, contatos domiciliares de casos e em população de área endêmica, com o intuito de identificar o melhor antígeno para o diagnóstico sorológico da hanseníase e detecção de indivíduos infectados pelo Mycobacterium leprae.Trata-se de um estudo transversal de natureza exploratória e analítica. A reatividade anti-LID-1, NDO-LID, NDO-HSA e PGL-1 foi avaliada por meio do enzyme-linked immunosorbentassay. Foram analisadas amostras de sangue total em papel de filtro Whatman de 2494indivíduos da população de sete municípios da microrregião de Almenara e de soro de 94casos novos de hanseníase e 104 contatos domiciliares de casos residentes no município de Uberlândia. O Banco de Dados foi criado no Software Epi Info versão 3.5.1 e análise realizada no software Statistical Package for the Social Sciences for Windows 18 e no GraphPad Prism versão 5. Para análise estatística foram utilizados os seguintes testes: Kolmogorov-Smirnov, Kruskal-Wallis one-way (H), Mann-Whitney (U) com correção de Bonferroni, kappa, Spearman (rho), teste Qui-quadrado de Pearson e regressão logística binária. Foi observado maior soropositividade no grupo de casos multibacilares (MB), em contatos domiciliares de casos MB e nos indivíduos residentes nos municípios de Almenara e Jequitinhonha. Obteve-se correlação positiva entre a sorologia e o índice baciloscópico,concordância substancial e significativa no grupo de casos novos de hanseníase e correlação positiva para todos os antígenos testados. Os testes anti-LID-1 e anti-NDO-LID apresentaram melhor performance para identificar os contatos domiciliares e ou indivíduos da população...

The subclinical infection can be evaluated by serologic test which determine circulating immunoglobulins. The aim of this study was to analyze the reactivity of different antigens inleprosy cases, household contacts of index cases and the population of the endemic area toidentify the best antigen for the diagnosis of leprosy and detection of individuals infected with Mycobacterium leprae. It is a cross-sectional study of exploratory and analytical nature. There activity anti-LID-1, NDO-LID, NDO-HAS e PGL-1 were evaluated using the enzyme linke dimmunosorbent assay. The whole blood in What man filter paper of 2494 individuals from the general population of seven municipalities in the micro-Almenara and serum of 94 patients with leprosy and 104 household contacts of patients residing in Uberlândia were analyzed. The database was created in Epi Info software version 3.5.1 and analysis in the software Statistical Package for Social Sciences for Windows 18 and GraphPad Prism version5. For statistical analysis the following tests were used: Kolmogorov-Smirnov, Kruskal Wallisone-way (H), Mann-Whitney (U) with Bonferroni correction, kappa, Spearman (rho), chisquaretest of Pearson and binary logistic regression. Identied higher seropositivity in the group of MB patients, household contacts of MB patients and in individuals living in the municipalities of Almenara and Jequitinhonha. Observed positive correlation between serology test and bacterial index, substantial agreement and significant in patients positive and positive correlation for all antigens. The LID-1 and NDO-LID antigens showed greater ability to identify household contacts or the general population infected with M. leprae, but the performance of the NDO-LID was better. The native PGL-1 had higher seropositivity than the NDO-HSA for all clinical forms of leprosy and household contacts. The seropositivity prevalence in the general population was higher than the detection rate of leprosy...

Ultrasound imaging versus conventional histopathology in diagnosis of periapical lesions of endodontic origin: A comparative evaluation.

Context: Accurate assessment of periapical status is critical in diagnosis, treatment planning, and evaluation of healing. Novel imaging modalities like sonography offer promising results with reduced radiation risks. Aims: To evaluate the potential of ultrasound imaging technique together with the application of color Doppler to differentiate between periapical lesions of endodontic origin. Materials and Methods: Twenty patients with periapical lesions of endodontic origin who were already scheduled for undergoing endodontic surgery were examined further using sonography. Color Doppler was performed to assess blood flow. Information on the size of the lesion, its content, and vascular supply was gained and recorded by means of ultrasound images. The sonographic images were analyzed and discussed with an expert sonologist, and a tentative diagnosis between a periapical cyst and periapical granuloma was made. Endodontic surgery and histopathological examination was done for each case and the results were compared. Results: The sonograms revealed the lesions within the bone in three dimensions and their contents, that is, fluids or tissues or blood vessels. Measurements of the periapical lesions in three dimensions were also obtained. Of the twenty cases studied, ultrasound could detect periapical granulomas in all 9 cases and radicular cysts in all 11 cases. Conclusion: Ultrasound imaging had the potential to be used for the evaluation of periapical lesions of endodontic origin. However, further studies are required to establish a definite correlation.

Avaliação dos níveis pressóricos em pacientes submetidos a tratamento cirúrgico ambulatorial / Evaluation of blood pressure in patients undergoing ambulatory surgery

O objetivo foi investigar e comparar as alterações da pressão arterial em pacientes hipertensos e normotensos submetidos à cirurgia odontológica em âmbito ambulatorial. A amostra foi constituída por dois grupos: Grupo Normotenso e Grupo Hipertenso (com 8 indivíduos em cada grupo). Pacientes foram avaliados pela Monitorizarão Ambulatorial da Pressão Arterial (MAPA) durante 24 horas. As aferições constadas no exame foram divididas para análise dos dados em 5 momentos: sono, pré-cirúrgico, transcirúrgico, pós-cirúrgico e vigília. Houve aumento significativo da pressão arterial no momento transcirúrgico do Grupo Normotenso (p = 0,02) e do Grupo Hipertenso (p = 0,04). No momento transcirúrgico notou-se o aumento significativo da pressão arterial nos dois grupos, todavia o grupo hipertenso manteve seus índices pressóricos elevados por maior fração de tempo.

The objective was investigated and compare the blood pressure variances in hypertensive and regular blood pressure patients who went thru dental surgery at ambulatory environment. The sample was made of two different groups: Regular Blood Pressure Group and Hypertensive Group (with 8 individuals on each group). Patients were evaluated by Blood Pressure Ambulatory Monitoring for 24 hours. The readings observed at the exam were divided in 5 moments: sleep, Pre-Operatory, Trans-Operatory, Post-Operatory and Follow Up. There was a significant increase observed at the Blood Pressure reading at the Trans-operatory of the Regular Blood Pressure group (p = 0,02) and the Hypertensive Group (p = 0,04). During the trans- -operatory it was observed a significant increase of the Blood Pressure on both groups, but the Hypertensive Group kept their numbers elevated for a longer time.

Role of the extracellular matrix in variations of invasive pathways in lung cancers

Among the most common features of highly invasive tumors, such as lung adenocarcinomas (AD) and squamous cell carcinomas (SqCC), is the massive degradation of the extracellular matrix. The remarkable qualitative and quantitative modifications of hyaluronidases (HAases), hyaluronan synthases (HAS), E-cadherin adhesion molecules, and the transforming growth factor β (TGF-β) may favor invasion, cellular motility, and proliferation. We examined HAase proteins (Hyal), HAS, E-cadherin, and TGF-β profiles in lung AD subtypes and SqCC obtained from smokers and non-smokers. Fifty-six patients, median age 64 years, who underwent lobectomy for AD (N = 31) and SqCC (N = 25) were included in the study. HAS-1, -2 and -3, and Hyal-1 and -3 were significantly more expressed by tumor cells than normal and stroma cells (P < 0.01). When stratified according to histologic types, HAS-3 and Hyal-1 immunoreactivity was significantly increased in tumor cells of AD (P = 0.01) and stroma of SqCC (P = 0.002), respectively. Tobacco history in patients with AD was significantly associated with increased HAS-3 immunoreactivity in tumor cells (P < 0.01). Stroma cells of SqCC from non-smokers presented a significant association with HAS-3 (P < 0.01). Hyal, HAS, E-cadherin, and TGF-β modulate a different tumor-induced invasive pathway in lung AD subgroups and SqCC. HAases in resected AD and SqCC were strongly related to the prognosis. Therefore, our findings suggest that strategies aimed at preventing high HAS-3 and Hyal-1 synthesis, or local responses to low TGF-β and E-cadherin, may have a greater impact in lung cancer prognosis.

Regulation of activated genes of fibroblasts and their improvement of skin aging / 中华医学美学美容杂志

Objective To investigate the possible mechanisms using different chemicals to improve the skin aging by the effect of estrogen,vitamin E,vitamin C on the transcriptional level of MMP-1 and HAS-2 mRNAs in cultured human skin fibroblast in vitro.Methods The different concentrations of estrogen,vitamin E,vitamin C were put into cultured human skin fibroblasts.After 24 hours,RT-PCR was used to detect the effects of the different chemicals on the transcriptional levels of the HAS-2 and MMP-1 mRNAs in fibroblasts.Results The effects of estrogen and vitamin C on the MMP-1 mRNA had significant difference between the high dose group and blank control group,and between the low dose group and blank control group (P＜0.05) ; the difference between the low dose group and high dose group was not statistically significant (P＞0.05).The effects of vitamin E and vitamin C on Has-2 mRNA also had significant difference between the high dose group and the blank control group,and between the low dose group and blank control group (P＜0.05),but the difference between the low dose group and high dose group was not statistically significant (P＞0.05).Conclusions Estrogen and vitamin C can reduce the transcription of MMP-1 gene,which decreases the degradation of collagen in the skin; vitamin E and vitamin C can increase the transcription of HAS-2 gene,which may possibly increase the synthesis of hyaluronic acid to alleviate the skin aging.