As a non-invasive examination method, anterior segment optical coherence tomography (AS-OCT) has huge potential in detecting neoplastic epithelial lesion.With AS-OCT, detection and differentiation of ocular surface squamous neoplasia (OSSN) within ocular surface pathologies can be achieved and the diagnosis rate is comparable to that of biopsy.With the development of technology, AS-OCT imaging mode has developed from time-domain OCT to spectral-domain OCT with higher penetrance and resolution, the high-quality images of which are helpful to distinguish the benign and malignant OSSN, enhance the detection rate of OSSN, improve the differentiation of ocular surface tumors, and thus improve the diagnostic accuracy of OSSN.In addition, AS-OCT can help optimize the treatment regimen and effectively monitor the outcome of the disease in the clinical management stage, such as monitoring the recurrence of OSSN and evaluating chemotherapy.In this article, the morphological features of OSSN, the advantages and disadvantages of OSSN auxiliary examinations, the development of AS-OCT, the specific manifestation of OSSN on AS-OCT, the application of OCT in atypical OSSN, as well as the value and limitation of AS-OCT in the diagnosis and management of OSSN were reviewed.

Objective To investigate the influence of different hemodialysis modes on serum levels of beta 2 microspheres , leptin and hemoglobin(Hb) in the patients with chronic renal failure (CRF) and to analyze its safety .Methods Sixty inpatients with CRF in our hospital from January 2014 to January 2015 were selected as the research subjects and divided into the common he‐modialysis group (common HD groups) ,hemodialysis filtration group(HDF group) and the common hemodialysis plus hemoperfu‐sion group(HD+ HP group) according to different treatment methods .The levels of serum leptin ,beta 2 microspheres (β2‐MG) , Hb and erythropoietin (EPO) were measured .The occurrence rates of adverse reactions were observed .The living quality was eval‐uated and conducted the comparative analysis .Results Compared with before hemodialysis ,the levels of serum leptin and β2‐MG levels after the first time of hemodialysis and 6‐month hemodialysis in the three groups were decreased ,moreover the levels in the HD+ HP group were the lowest ,the differences were statistically significant (P<0 .05) ;compared with the common HD group , the levels of Hb and EPO after the first time of hemodialysis and 6‐month hemodialysis in the HDF group and HD+ HP group were increased ,the differences were statistically significant (P<0 .05);the incidence rate of complications after hemodialysis in the HD +HP group was lower than that in the common HD group and the HDF group ,the differences were statistically significant (P<0 .05);the living quality scores of each item after hemodialysis in the HDF group and HD + HP group were superior to those in the common HD group ,moreover the living quality scores in each item in the HD + HP group were higher ,the differences were statisti‐cally significant(P<0 .05) .Conclusion Adopting the HP therapy in the patients with CRF can better reduce the levels of blood leptin andβ2‐MG without affecting the Hb level ,moreover with low occurrence rate of complications ,and the patient′s living quali‐ty is significantly improved after treatment .

Objective To study the chemical constituents from the acetone extract in the root of Tibetan medicine Euphorbia wallichii. Methods The constituents were separated by column chromatography with silica gel and purified by Sephadex LH-20. Their structures were identified on the basis of spectral analysis such as IR, HRESIMS, HRSIMS, and 1D-and 2D-NMR techniques ( 1H- 1H COSY , HMQC, HMBC). Results Six compounds were isolated from the acetone extract in the root of E. wallichii. Their structures were identified as lanosterol (Ⅰ), ingenol-20-myristinate (Ⅱ), ingenol-3-myristinate (Ⅲ), acid (Ⅳ), 1-O-?-L-arabinofuranosyl-(1→6)-?-D-glucopyranosyl-3, 7-dimethyl-oct-2-en-7-ol (Ⅴ), 1-O-galloyl-?-D-glucose (Ⅵ) . Conclusion Ingenane diterpene esters ingenol-20-myristinate (Ⅱ) and ingenol-3-myristinate (Ⅲ) are new compounds and other compounds are found from this plant for the first time. It is the first time that monoterpene disaccharide glycoside, compound Ⅴ, is isolated from the plants of Euphorbia L.

【Objective】 To explore and analyze on the factors that influence the returning of plateletpheresis donors. 【Methods】 A total of 1 302 plateletpheresis donors, selected from 2014 to 2020 in the blood center, were followed up for 1 year, and their re-donations were recorded. The data of factors were analyzed through Univariate analysis and Logistic regression on statistical software. 【Results】 From 2014 to 2020, there were 1 302 donors participated first-time plateletpheresis donation, including 1070 males and 232 females, aged 18-55 years old, with an average age (28.69±12.90) of years old. As to the education level, 539 cases were junior high school education level and below, 435 cases senior school or technical secondary school education level, and 328 cases junior college education level and above. Within the 1 302 first-time platelet donors, 16 developed adverse reactions to blood donation. 455 donors donated one dose, and 847 cases donated two doses. 506 were public or permanent employed, and 796 were unemployed. 1 267 were ethnic Hans and 35 were ethnic minorities. 21.81%(284/1 302) returned to donate within one year. Univariate and multivariate Logistic regression analysis showed that gender, age, educational level, whether suffered adverse reactions during the first-time donation, doses of donation, ethnicity and occupations all affected the returning of plateletpheresis donors. 【Conclusion】 Plateletpheresis donors with younger age, lower education level, unemployed status, ethnic minorities, no adverse reactions occurring during the first-time donation, and donation history of two doses are more likely to return to donate.

Objective To explore induced eruption techniques of the impacted maxillary canine with labial medial inclination. Methods A total of 38 cases with upper impacted canines with labial medial inclination were selected. The impacted canine was connected to the buccal hook of the upper first molar band, moved distantly and uprightly and then drawn to the dental arch after the pressure to the adjacent teeth was removed. Results After average 18 months treatment, 38 patients had good functions. The deeper impacted canines in 5 patients were extracted, and then the dental arch spaces closed. The lateral incisors of root resorption in 4 patients were extracted. The premolars in 19 patients were removed, and 10 patients without extractions. Then the impacted canines were moved into dental arch. There was no aggravated root resorption during the treatment process. Conclusion When the maxillary canine with labial medial inclination is impacted, it is moved distantly and uprightly by elastic line connected to the buccal hook of the maxillary first molar band, and then drawn to the dental arch. The process is smoothly and the neighbor teeth are protected.

Objective To assess the long term effects of combined oral contraceptive pills use on the mean of serum TG, TC, HDL C, LDL C, ApoA1, ApoB and Lp(a). Methods The study was carried out in 446 women grouped as combined norethisterone containing ethinylestradiol (EE) 35 ?g and norethisterone 625 ?g; combined 18 metayl norethisterone (norgestrel) containing EE 30 ?g and 18 metayl norethisterone 300 ?g for using 5～25 years, and control subjects wearing IUD for the corresponding period. The three groups were similar in age, body mass index (BMI), continued period of contraceptives use and income. Results The data showed that changes of varying degree of lipid and lipoprotein parameters were obvious in women of long term taking low dose combined norethisterone and norgestrel, compared with the control. The mean of TG, HDL C, ApoA1 were significantly increased simultaneously ( P

Objective To isolate,cultivate and identify the human embryonic fibroblasts(hEFs) derived from the gonadal ridges and dorsal mesenteries of human embryos,and to detect the expression by hEFs of cytokines crucial for the growth of human embryonic germ cells(hEG) in vitro.Methods The hEFs were isolated by enzyme digestion from gonadal ridges and dorsal mesenteries of 5-to 9-week old human embryos.The cells were then cultivated.The biologic characteristics(morphology,growth characteristics and cell cycle) of these cells were also studied.The reverse transcription-polymerase chain reaction(RT-PCR) was used to seek the expressions of a specific fibroblast marker,prolyl 4-hydroxylase ?,and a specific marker of epithelial cells,cytokeratin-4,in the cells.The expressions of cytokines essential for the growth of hEG,namely basic fibroblast growth factor(bFGF) and leukemia inhibitory factor(LIF),were also examined by RT-PCR.Results The hEFs were successfully isolated and cultivated from gonadal ridges and dorsal mesenteries of human embryos.They could be passaged beyond the 25th generation.The biologic characteristics of the cells did not change,even in high-passage cells or frozen-thawed cells.The cells expressed prolyl 4-hydroxylase ?, but not cytokeratin-4,which was similar to the fibroblasts.The cultured cells expressed bFGF and LIF.Conclusion The hEFs derived from gonadal ridges and dorsal mesenteries of human embryos are successfully isolated and cultivated,and the cells express the cytokines essential for the growth of hEG in vitro.

Objective To explore the correlation between BCL2 binding component 3 (BBC3) expression and postoperative survival time of lung squamous cell carcinoma (LUSC),and investigate its molecular mechanism.Methods The expression of BBC3 in 39 patients was detected by using qRT-PCR assay.Meanwhile,clinical data of all patients were collected by follow-up visit.Then,the survival analysis was performed by using Kaplan-Meier and log rank tests.Moreover,multiple factors analysis was performed using COX proportional hazard model.At last,BBC3 was over-expressed in NCI-H226 cell lines,then detected the effects of BBC3 expression on cell proliferation and apoptosis by using MTT assay and flow cytometry.Results BBC3 expression were significantly correlated with the tumor metastasis (r=0.556,P=0.023),tumor size (r=0.532,P =0.042),T staging (r =0.551,P=0.021) and TNM staging (r=0.524,P=0.047).Meanwhile,the results of Kaplan-Meier and log rank tests found that BBC3 expression was significantly correlated with survival time of patients with LUSC,and the length of survival time in patients with high BBC3 expression was longer than that in patients with low BBC3 expression (x2 =7.542,P=0.006).The COX proportional hazard model indicated that tumor metastasis,T staging,TNM staging and BBC3 expression were independent factors which significantly affected survival time.Moreover,the proportion of apoptotic cells in the recombinant plasmid BBCs group was higher than that in the empty plasmid group and control group (P＜0.05).Conclusion BBC3 expression could suppress the proliferation of tumor cells and promote apoptosis,and are significantly correlated with survival time of patients,so which may be assistant biomarkers for prognosis of LUSC.

Objective: To explore the preparation process for Tibetan medicine Anshen Pills. Methods: Comparing the preparation process of Tibetan medicine extracted by SFE CO 2 with that extracted by pertroleum ether and analyzing chemical components of their extracts by GC/MS. Results: The method of SFE CO 2 is superior to extractive method by pertroleum ether. The former has higher extraction ratio and shorter extraction time without residues of chemical solvent. Conclusion: The process of SFE CO 2 is suitable for the preparation of Tibetan medicine Anshen Pills.

Purpose Glioblastoma and metastasis are the common and aggressive type of brain tumors in adults,and a definitive diagnosis has an important guiding significance to the clinical practice.Our purpose is to investigate the value of post contrast-enhanced T1WI-based histogram analysis in the differential diagnosis of glioblastoma and solitary brain metastasis.Materials and Methods Sixty-eight consecutive patients with glioblastoma or solitary metastasis confirmed pathologically or surgically at Meizhou People's Hospital between January 2012 and November 2015 were included in the study.Glioblastoma was diagnosed in 34 patients and solitary brain metastasis was diagnosed in the rest 34 patients.All patients had undergone routine brain MR examination before surgical resection and the imaging data were retrospectively analyzed.The ROIs were manually placed in enhanced solid parts of the tumors on the maximal cross-sectional post contrasted-enhanced T1WI by Image J.Then the mean,standard deviation (SD),minimum,maximum,skewness and kurtosis were calculated respectively.Results Kurtosis of post contrast-enhanced T1WI of metastasis (1.260 ± 1.271) was statistically higher than that of glioblastoma (0.071 ± 0.667)(P＜0.05).When the optimal threshold criterion ofkurtosis was set at 0.736,the areas under ROC curve of kurtosis was 0.792 (95％ CI:0.676-0.881),and the sensitivity,specificity,positive predictive value and negative predictive value at the optimum cutoff value were 76.47％,88.24％,80.65％,78.38％,respectively.Conclusion Kurtosis of post contrastenhanced T 1 WI-based histogram is valuable in differential diagnosis of glioblastoma and brain metastasis,and thus provides reliable and objective basis for differentiating the two kinds of tumors.