Study on HPV infection types distribution in ASC-US ,LSIL and HSIL of uterine cervix / 国际检验医学杂志

Objective To analyze the genotypes distribution and clinical significance of human papillomavir-us(HPV) infection in atypical squamous cells of undetermined significance (ASC-US) ,low squamous intraepi-thelial lesion (LSIL) and high squamous intraepithelial lesion (HSIL) of uterine cervix ,meanwhile to conduct the cervical histopathological diagnostic analysis in the patients with ASC-US、LSIL and HSIL .Methods The gene amplification technique (PCR) combined with gene-chips technology were adopted to conduct the 23 kinds of HPV genotype detection on 236 cases of cervical ASC-US ,36 cases of cervical LSIL and 61 cases of cervical HSIL specimens .All cases of ASC-US ,LSIL and HSIL were performed the cervical biopsy his-topathological diagnosis .And then the subjects related data were analyzed .Results Among 236 cases of cervi-cal ASC-US specimens ,139 cases of HPV infection were detected with the total HPV infection rate 58 .90％(139/236) ,in which the single genotypes infection rate was 38 .14％ (90/236)and the multiple genotypes infec-tion rate was 20 .76％ (49/236);26 cases of HPV infection were detected from 36 cases of cervical LSIL speci-mens with the total HPV infection rate of 72 .22％ (26/36) ,in which the single genotypes infection rate was 52 .78％ (19/36) and the multiple genotypes infection rate was 19 .44％ (7/36);61 cases of HPV infection were detected from 58 cases of cervical HSIL specimens with the total HPV infection rate of 95 .08％ (58/61) , in which the single genotypes infection rate was 68 .85％ (42/61)and the multiple genotypes infection rate was 26 .23％ (16/61) .The total infection rates had statistically significantly differences among the cervical ASC-US group ,LSIL group and HSIL group (P<0 .05) .Conclusion HPV16 ,52 ,58 are the main types in the patients with cervical ASC-US ,LSIL and HSIL .The gene-chip technology can be used in the HPV genotypes detection of cervical cells ,which has an important clinical significance for further distribution management on ASC-US patients and should draw great attention of gynecologist .

Lorrelation of gene mutation of EGFR,the expressions of HER-2,VEGF in lung adenocarcinoma and clinical pathological factors / 国际检验医学杂志

Objective To investigate the gene mutation of epithelial growth factor receptor(EGFR) and the expressions of hu‐man epiderma1 growth factor receptor 2(HER‐2) and vascular endothelial growth factor(VEGF) in lung adenocarcinoma and their relationships with the clinical pathological factors .Methods ARMS‐PCR method was used to detect the gene mutation of EGFR in 49 lung adenocarcinoma specimens and 10 normal tissue specimens .Immunohistochemical method was also used to detect the ex‐pressions of the HER‐2 and VEGF in them .Results (1) The mutation rates of EGFR and the positive rates of HER‐2 and VEGF in lung adenocarcinoma were significantly higher than those in the normal tissues(P0 .05) .The HER‐2 and VEGF protein expressions in lung adenocarcinoma were correlated with differential ,the size of tumor ,TNM stages ,lymph nodes metastasis and pleural invasion(P0 .05) .(3) The expressions of HER‐2 and VEGF protein in the lung adenocarcinoma were positively correlated with each other(P<0 .01) .Conclusion EGFR mutation is closely related to the occurrence of lung ade‐nocarcinoma ,its high expressions in the women ,non smoking people have important clinical significance .HER‐2 and VEGF could promote the lung adenocarcinoma′s occurrence ,development and transfer .They could be used to evaluate the patients′prognosis ,and provide new molecular targeted therapy .

Comparative study on fluorescent quantitation polymerase chain reaction and gene-chips typing method in genotyping HPV / 国际检验医学杂志

Objective To compare the sensitivity of fluorescent quantitation polymerase chain reaction (fluorescent quantitation method) and gene‐chips typing method(gene‐chips method) in the detection of human papillomavirus(HPV) ,and to analyse differ‐ences and clinical significance .Methods A total of 246 women were selected as subjects ,among them ,111 cases of cervical exfolia‐ted cells and 135 cases of cervical tissues were collected and detected .15 kinds of high‐risk HPV genetypes were detected in all sub‐jects by using fluorescent quantitation method and gene‐chips method respectively ,and the detection results were compared . Results The sensitivity of the fluorescent quantitation method in detecting HPV was 55 .28% and that of the gene‐chips method was 55 .69% ,there was no statistically significant difference in sensitivity between the two methods (P>0 .05) .The two methods had relative high conformance(κ=0 .745) .The positive rate of HPV infection was increased with the progression of cervical dis‐ease .Conclusion The fluorescent quantitation method and the gene‐chips method have a relative high conformance ,and both with high sensitivity in detecting HPV .The severity degree of cervical cytological and histological changes may be positively correlated with HPV infection .

Research of exons 19 and 21 mutations of epidermal growth factor receptor gene in 109 cases of lung adenocarcinoma in Yancheng area / 国际检验医学杂志

Objective To investigate the 19 and 21 exon mutation status of the epidermal growth factor receptor(EGFR) gene in the patients with lung adenocarcinoma and its distribution differences among different groups .Methods The related samples in 109 cases of lung adenocarcinoma were collected in our hospital during 2013-2014 .The 19 and 21 exons of EGFR gene were detected by adopting the ARMS‐PCR method .Results Among 119 cases ,19 and 21 exons mutations were found in 56 cases(51 .38% ) ,in which 24 cases (22 .02% ) were in exon 19 and 33 cases (30 .28% ) were in exon 21 .59 cases were male with 19 cases(32 .20% ) of mutant type and 50 cases were female with 37 cases (74 .00% ) of mutant type;64 cases were ≥ 60 years old with 34 cases (53 .13% ) of mutant type ,45 cases were <60 years old with 22 cases(48 .89% ) of mutant type;33 male cases were smoking with 7 cases(21 .21% ) of mutant type and 25 male cases were non‐smoking with 12 cases (48 .00% ) of mutant type .Conclusion The 19 and 21 exon mutation rate of EGFR gene in the patients with lung adenocarcinoma is higher in this area ,the 21 exon mutation rate is slightly higher than that of 19 exon;the mutation type and mutation rate are correlated with sex and smoking history ,but have no correlation with age .

Studies on the expressions and clinical significance of miRNAlet 7 and Ras in non-small cell lung cancer / 中国医师杂志

Objective To study the expressions of miRNAlet7 and Ras in non-small cell lung cancer ( NSCLC),and their correlations with clinicopathological features and survival time.Methods In-situ hybridization was used to detect the expression of let7,and SP immunohistochemistry to measure HMGA2 in 68 NSCLC cases ( group A) and 20 cases with normal lungs ( group B).Results The positive rate of let7 in group A was lower than that in group B (39.7％ vs 63.2％ ) ( P ＜0.05).The positive rate of Ras in group A was higher than that in group B (66.2％ vs 25.0％ ) ( P ＜0.01 ).The positive rate of let7 was not related to the age,gender,histological type,cell differentiation,and clinical stages of cancer patients(P ＞0.05).The positive rate of Ras was related to smoking,sex,and histological type of cancer( P ＜0.01 ),and was not related to cell differentiation,lymphatic metastasis,and clinical stages of cancer ( P ＞0.05).There was an obvious negative correlation between let7 and Ras( r =-0.627,P ＜0.01 ).The 2-year survival rate of let7-positive group was higher than that of the let 7-negative group ( x2 =4.84,P ＜0.05).No statistically significant difference was found between Ras-positive and-negative groups ( P ＞0.05 ).Conclusions The lower level of let7 expression,and high level of Ras expression have much to do with the carcinogenesis of NSCLC.The level of let7-positive expression is closely related to prognosis; while Ras may act in cooperativity in the occurrence and development of NSCLC.

Expression of Runx3 protein and its cliniopathologic significance in gastric carcinoma / 临床与实验病理学杂志

Purpose To investigate the relationship between the expression of Runx3 protein and pathogenesis, development,clinicopathological features and its prognostic significance in gastric adenocarcinoma.Methods Immunohistochemical SP method was used to detect the expression of Runx3 protein in 63 cases of gastric cancer,19 cases of atypical hyperplasia and 10 cases of normal gastric mucosa obtained from patients whose partial gastrotomy was performed for benign diseases.Results Compared with gastric atypical hyperplasia tissue (68.4%) and normal gastric mucosa (90%), the positive rate of Runx3 protein in gastric cancer (39.7%) was significantly lower (P＜0.05); the expression of Runx3 protein was related to tumor differentiation, invasive depth and lymphnode metastasis, but not to age, sex, tumor size and TNM stages; the survival rate of the patients with Runx3 protein expression was higher than that without Runx3 expression (P＜0.05).Conclusion Runx3 protein may play an important role in the occurrence and development of gastric cancer, and it is an important marker in evaluating the prognosis of the patients.

Morphological and immunophenotypic variations in malignant melanoma / 医学研究生学报

A variety of cytomorphological features, architectural patterns and stromal changes may be observed in malignant melanomas. Hence, melanomas may mimiccarcinomas, sarcomas, benign stromal tumours, lymphomas, plasmacytomas and germ cell tumours. Melanomas may be composed of large pleomorphic cells, small cells, spindle cells and may contain clear, signet-ring, pseudolipoblastic, rhabdoid, plasmacytoid or balloon cells. Various inclusions and phagocytosed material may be present in their cytoplasm. Nuclei may show bi- or multi-nucleation, lobation, inclusions, grooving and angulation. Architectural variations include fasciculation, whorling, nestion, trabeculation, pseudoglandular, pseudopapillary, pseudofollicular, pseudorosetting and angiocentric patterns. Mucoid or desmoplastic changes and very rarely pseudoangiosarcomatous change, granulomatous inflammation or osteoclastic giant cell response may be seen in the stroma. The stromal blood vessels may exhibit a haemangiopericytomatous pattern, proliferation of glomeruloid blood vessels and perivascular hyalinization. Occasionally, differentiation to nonmelanocytic structures (Schwannian, fibro/myofibroblastic, osteocartilaginous, smooth muscle, rhabdomyoblastic, ganglionic and ganglioneuroblastic) may be observed. Typically melanomas are S-100 protein, NKIC3, HMB45, Melan A and tyrosinase positive but some melanomas may exhibit an aberrant immunophenotype and may express cytokeratins, desmin, smooth muscle actin, CD68, CEA, EMA and VS38. Very rarely, neurofilament protein and GFAP positivity may be seen.