AIM: To investigate the alterations in corneal aberration and relative refractive power following the reduction of back optic zone diameters(BOZD)of orthokeratology lenses.METHODS: Myopic children aged 8-12 years, deemed suitable and willing to wear orthokeratology lenses, were randomly allocated to wear lenses with a 6.0 mm BOZD or a 5.0 mm BOZD. Data collection included changes in higher-order aberrations, relative refractive power and the treatment zone diameter of the two groups after wearing lenses for 1 d, 1 wk, 1, and 3 mo. The correlation of increase in corneal higher-order aberrations with refractive power was analyzed.RESULTS: The increases in total higher-order aberrations, spherical aberrations and coma aberrations varied over time following lens wear(all P<0.001), and there were no statistically significant differences in the changes of total higher-order aberrations and coma aberrations between the two groups of patients(all P>0.05). A significant difference was observed in the increment of spherical aberrations in the 5 mm range between the two groups of patients, which varied over time(Ftime=40.179, Ptime<0.001; Fgroup=11.948, Pgroup=0.001; Finteraction=3.262, Pinteraction=0.03). A significant difference was observed in the increment of spherical aberrations in the 4 mm range between the two patient groups(Ftime=34.462, Ptime<0.001; Fgroup=13.094, Pgroup<0.001; Finteraction=1.372, Pinteraction=0.25). There was no statistically significant distinction in relative refractive power between the two groups(Fgroup=0.048, Pgroup=0.83; Finteraction=1.208, Pinteraction=0.31); however, relative refractive power changed over time(Ftime=40.030, Ptime<0.001). The difference in treatment zone diameter between the two groups was statistically significant, with changes over time(Ftime=11.212, Ptime<0.001; Fgroup=74.073, Pgroup<0.001; Finteraction=0.312, Pinteraction=0.82). The total higher-order aberrations, spherical aberrations, and coma aberrations in 4, 5 and 6 mm range showed a positive correlation with relative refractive power values(all P<0.001). Statistically significant difference was observed in the axial length between the two groups after wearing lenses for 3, 6 and 12 mo(Ftime=185.398, Ptime<0.001; Fgroup=5.618, Pgroup=0.02; Finteraction=2.315, Pinteraction=0.11).CONCLUSION: Orthokeratology lenses leaded to elevated higher-order aberrations. Orthokeratology lenses with smaller BOZD produced significantly greater spherical aberrations at 4 and 5 mm range and smaller treatment zone diameters. The corneal total higher-order aberration was positively correlated with relative refractive power. Wearing orthokeratology lenses with a smaller BOZD can cause slower axial growth and better myopia control.

Esophageal squamous cell carcinoma (ESCC) is one of the leading causes of cancer death worldwide. It is urgent to develop new drugs to improve the prognosis of ESCC patients. Here, we found benzydamine, a locally acting non-steroidal anti-inflammatory drug, had potent cytotoxic effect on ESCC cells. Benzydamine could suppress ESCC proliferation in vivo and in vitro. In terms of mechanism, CDK2 was identified as a target of benzydamine by molecular docking, pull-down assay and in vitro kinase assay. Specifically, benzydamine inhibited the growth of ESCC cells by inhibiting CDK2 activity and affecting downstream phosphorylation of MCM2, c-Myc and Rb, resulting in cell cycle arrest. Our study illustrates that benzydamine inhibits the growth of ESCC cells by downregulating the CDK2 pathway.
Humans ; Benzydamine ; Esophageal Neoplasms/drug therapy* ; Esophageal Squamous Cell Carcinoma/drug therapy* ; Molecular Docking Simulation ; Phosphorylation ; Cell Proliferation ; Cell Line, Tumor ; Apoptosis ; Cyclin-Dependent Kinase 2

Background: Bovine papilloma is a neoplastic disease caused by bovine papillomaviruses (BPVs), which were recently divided into 5 genera and at least 24 genotypes. Objectives: The complete genome sequence of BPV type 15 (BPV Aks-02), a novel putative BPV type from skin samples from infected cows in Southern Xinjiang China, was determined by collecting warty lesions, followed by DNA extraction and amplicon sequencing. Methods: DNA was analyzed initially by polymerase chain reaction (PCR) using the degenerate primers FAP59 and FAP64. The complete genome sequences of the BPV Aks-02 were amplified by PCR using the amplification primers and sequencing primers. Sequence analysis and phylogenetic analysis were performed using bio-informatic software. Results: The nucleotide sequence of the L1 open reading frame (ORF) of BPV Aks-02 was 75% identity to the L1 ORF of BPV-9 reference strain from GenBank. The complete genome consisted of 7,189 base pairs (G + C content of 42.50%) that encoded 5 early (E8, E7, E1, E2, and E4) and 2 late (L1 and L2) genes. The E7 protein contained a consensus CX2CX29CX 2 C zinc-binding domain and a LxCxE motif. Among the different members of this group, the percentages of the complete genome and ORFs (including 5 early and 2 late ORFs) sequence identity of BPV Aks-02 were closer to the genus Xipapillomavirus 1 of the Xipapillomavirus genus.Phylogenetic analysis and sequence similarities based on the L1 ORF of BPV Aks-02 revealed the same cluster. Conclusions The results suggest that BPV type (BPV Aks-02) clustered with members of the Xipapillomavirus genus as BPV 15 and were closely related to Xipapillomavirus 1.

Objective · To compare the efficacy and prognostic factors of HCAG regimen with traditional IA regimen in the treatment of newly diagnosed elderly acute myeloid leukemia (AML) patients. Methods · Forty-one patients with AML (aged 55-71 years) were randomly divided into two groups (Group HCAG and Group IA) between 2014 and 2016 for induction and consolidation therapy. Multivariate analysis was applied to identify prognostic factors for relapse-free survival (RFS). Results · A total of 29 patients (70.7%) achieved complete remission (CR). The estimated 2-year overall survival (OS) was 66.8% in Group HCAG and 75.4% in Group IA (P=0.913). The estimated 2-year RFS was 61.8% in Group HCAG and 49.1% in Group IA (P=0.411). Age remained as the unfavorable prognostic factor, leading to significant differences in OS and RFS. In addition, RFS was influenced by cytogenetic/molecular risk stratification. Conclusion · Although HCAG seemed not to particularly benefit the group, the dose reduction of anthracyclines may be applied in elderly patients with comparable short-time outcome. Furthermore, the introduction of homoharringtonine resulted in an improvement of treatment response for more than 20% compared with CAG regimen.

OBJECTIVE:To investigate the correlation of blood concentrations of tamoxifen (TAM) and its metabolites with endometrial hyperplasia in estrogen receptor(ER)-positive breast cancer patients. METHODS:A total of 69 patients with ER-posi-tive breast cancer selected from our hospital during Mar. 2015-Apr. 2016 received TAM (twice a day,one tablet each time) for more than 6 months. According to endometrial thickness,they were divided into abnormal hyperplasia group(40 cases)and normal group(29 cases). The steady state concentrations of TAM and its metabolites [4-OH-tamoxifen(OHT),N-demethylation tamoxifen (DMT),Endoxifen] were determined by HPLC-FLU. The correlation of blood concentration and other factors with endometrial thickness were investigated by Pearson test and multiple regression analysis. RESULTS:The medication time and Endoxifen steady state concentration in abnormal hyperplasia group were both significantly longer or higher than normal group,with statistical signifi-cance (P<0.05). There was no statistical significance in age,BMI,complication and steady state concentrations of TAM,OHT and DMT between 2 groups(P>0.05). The endometrial thickness was positively correlated with Endoxifen steady state concentra-tion and medication time(r=0.447,0.460,P<0.05). Using endometrial thickness(y)as dependent variable,medication time(x1) and Endoxifen steady state concentration(x2)as independent variable,multiple regression analysis was conducted. Multiple regres-sion equation was calculated as follows:y=2.436+0.123x1+0.082x2(F=12.610,r=0.526,P<0.05). CONCLUSIONS:Medication time and Endoxifen steady state concentration may be related to endometrial hyperplasia,which can provide reference for predicting TAM induced endometrial abnormal hyperplasia in ER-positive breast cancer patients.

Objective To investigate the influence of single agent and combined medication chemotherapy on elderly patients with gastric cancer. Methods One hundred and twenty elderly inpatients with gastric cancer in the general surgery department of the Nanyang Municipal Central Hospital from January 2009 to October 2014 were divided into the single agent chemotherapy group (n=60) and combined medication chemotherapy group(n=60). The adverse reactions and survival time were compared between the two groups. Results The occurrence rates of nausea, vomiting, diarrhea, constipation, leukopenia, oral mucositis and peripheral neuropathy in the single agent group were lower than those in the combined chemotherapy group, the difference between the two groups was statistically significant (P<0.05) ; the occurrence rates of Hb decrease, thrombocytopenia and transaminase elevation in the single agent group were lower than those in the combined chemotherapy group,but the difference was not statistically significant(P>0. 05);the survival time in the combined chemotherapy group was longer than that in the single agent chemotherapy group,but the difference between them was not statistically significant(P>0.05). Conclusion Single agent chemotherapy may be considered as the first-line chemotherapy scheme for elderly patients with gastric cancer.

OBJECTIVE: To study the expression of DNA-dependent protein kinase (DNA-PK) in human laryngeal squamous cell carcinoma (LSCC) and normal laryngeal mucosa (NLM), and to analysize the relationship between the expression and the clinicopathologic parameters of LSCC. METHOD: Immunohistochemical technique (Envision) was used to detect the expression of DNA-PK in 64 cases of LSCC and 15 cases of NLM. To investigate an investigation was conducted on the relationship between the expression and clinico-pathological features of LSCC. RESULT: DNA-PK was lowly expressed in NLM and highly expressed in LSCC,the positive rate of DNA-PK expression was 26.67% (4/15), 78.13% (50/64), respectively, and there was significant different difference between the two groups (P < 0.05). Its expression was correlated with the level of histodifferentiation (P < 0.05), but not with TNM stages and neck lymph node metastasis (P > 0.05). CONCLUSION DNA-PK may be involved in disease development of LSCC.
Aged ; Carcinoma, Squamous Cell ; enzymology ; pathology ; DNA-Activated Protein Kinase ; metabolism ; Female ; Head and Neck Neoplasms ; enzymology ; pathology ; Humans ; Laryngeal Mucosa ; enzymology ; Laryngeal Neoplasms ; enzymology ; pathology ; Larynx ; enzymology ; Lymph Nodes ; Lymphatic Metastasis ; Male ; Middle Aged ; Squamous Cell Carcinoma of Head and Neck

Objective To analyze the clinical information of a family with one patient who have systemic lupus erythematosus (SLE) and Fabry disease,as well as the enzymatic activity and gene mutation in these family members.Methods Clinical characteristics were collected from the proband and her family members.Peripheral blood samples from three members of this family were collected and the enzymatic activity was measured by fluorimetrie substrate assay.Genomic DNA was extracted from one male member with significantly decreased enzyme activity,the 7 exons and their flanking introns of GLA gene were amplified by PCR and directly sequenced.Results The enzyme activity of two family members was significantly decreased,the genetic analysis of the male member revealed a missense mutation in exon 2:c.334C＞T (CGC＞TGC)( p.R112C ).Family members except the proband had no definite evidence to support the presence of SLE.Conclusion The coexistence of SLE and Fabry disease is extremely rare.Immunological test,enzymatic activity and gene mutation analysis seem to be helpful for the differential diagnosis.

BACKGROUND:Studies in recent years have demonstrated that arginase Ⅰ contribute to the process of numerous cardiovascular diseases,however,most of studies focus on arteries,few regarding venous diseases.OBJECTIVE:To explore the changes of arginase Ⅰ expression in rat traumatic deep venous thrombosis models,and to analyze the possible function of arginase Ⅰ in deep venous thrombosis formation.METHODS:Totally 100 Sprague Dawley rats were randomly divided into the control and model groups.Traumatic deep venous thrombosis models were established by clamping the femoral vein and immobilizing the bilateral hind limbs (hip spica cast fixation),and assigned into initial thrombosis,peak thrombosis and non-thrombosis groups according to different observing time points and pathophysiological situations of thrombosis.Whole blood RNA of each group was extracted,and the change of arginase I expression in blood cells of each group was detected by real-time PCR.RESULTS AND CONCLUSUON:Expression of arginase Ⅰ in the peak thrombosis group was significantly increased compared with other 3 groups (P < 0.01).There were no significances among control,initial thrombosis and non-thrombosis groups (P > 0.05).The finding demonstrated that arginase Ⅰ is closely related to deep vein thrombosis formation.

BACKGROUND:There is lack of an effective measuring means to diagnose deep venous thrombosis (DVT) in clinic.KLF2 and KLF4 are down-expressed at prethrombotic state,which may be served as predictive molecular markers to diagnose DVT.OBJECTIVE:To explore the feasibility of KLF2 and KLF4 as molecular markers to prediagnose DVT in rats.METHODS:Totally 90 rats were obtained from 100 rats to establish traumatic DVT models and divided into the prethrombotic,thrombosis crest-time and non-thrombosis groups.The remained 10 rats served as control group.Rat blood was collected at each time point,and the expressions of KLF2 and KLF4 were detected by real-time PCR.RESULTS AND CONCLUSION:The KLF2 and KLF4 mRNA expressions in the prethrombotic group and thrombosis crest-time group were lower than that of the control group.However,the KLF2 and KLF4 mRNA expressions in the non-thrombosis group was higher than that of the control group.Therefore,KLF2 and KLF4 may be candidate molecular markers for prediagnosis of DVT in rats.