Mental health literacy among residents in Ningbo City / 预防医学

Objective@#To investigate the mental health literacy levels among residents in Ningbo City, so as to provide the evidence for implementing the mental health service policy and targeted mental health education.@*Methods@#Permanent residents at ages of 12 years and older were recruited in Ningbo City using the multi-stage stratified random sampling method from August to December, 2020. Subjects' mental health literacy levels were evaluated using the national mental health literacy survey of China, and the gender-, age-, region- and educational level-specific levels of mental health literacy were investigated.@*Results@#A total of 6 654 questionnaires were allocated, and 6 392 valid questionnaires were recovered, with an effective recovery rate of 96.06%. The respondents included 2 967 men ( 46.42% ) and 3 425 women ( 53.58% ). The respondents were predominantly at ages of 18 to 44 years ( 2 705 residents, 40.19%) , lived in urban areas ( 3 823 residents, 59.81% ), and had an educational level of junior high school and below ( 3 195 residents, 49.98% ). The level of mental health literacy was 19.06%, and the score of mental health knowledge was ( 64.06±18.39 ) points. In the dimension of mental health skills, the scores of interpersonal support, cognitive reappraisal and transferred attention were ( 2.58±0.51 ), ( 2.45±0.57 ) and ( 2.82±0.49 ) points, and the score of mental health awareness was ( 3.63±0.47 ) points. A higher level of mental health literacy was seen in women than in men ( 20.64% vs. 17.22%, P<0.05 ) and in urban residents than in rural residents (20.95% vs. 16.23%, P<0.05 ). In addition, there were age- and educational level-specific levels of mental health literacy among residents ( P<0.05 ), and a higher level was seen in residents at ages of 18 to 45 years ( 28.98% ) and with a bachelor degree (40.89% ).@*Conclusions@#A high level of mental health literacy is found in residents in Ningbo City. Mental health promotion campaigns are recommended among men, rural elderly residents with a low educational level.

An experimental study on the ameliorating effect of terazosin on whole-brain irradiation-induced cognitive dysfunction / 中华放射肿瘤学杂志

Objective:To verify the protective effect of terazosin on cognitive function of rats after whole-brain irradiation (WBI) and to investigate its mechanism.Methods:A total of 64 1-month-old male SD rats were randomly divided into the untreated control group, terazosin group, irradiation group and irradiation plus terazosin group (combination group). WBI was administered at a single dose of 20 Gy in the irradiation and combination groups. The open field test and the Morris water maze (MWM) test were used to evaluate the effect of terazosin on cognitive function after WBI.Starting from the three aspects of juvenile neuron apoptosis, neurogenesis disorderand microglia activation, the possible cellular mechanism wasassayed by double-label immunofluorescence staining for BrdU (bromodeoxyuridine) / NeuN, DCX(Doublecortin) / Caspase-3 and single-label immunofluorescence staining for Iba-1 (ionized calcium binding adaptor molecule-1).Results:Terazosin intervention improved the short-term memory retention of irradiated rats ( P=0.032). After terazosin treatment, the number of DCX + cells in the combination groupwas increased by approximately 35% compared with that in the irradiation group ( P=0.038). The number of BrdU +/NeuN + cells in the combination group was increased by approximately 15% than that in the irradiation group ( P>0.05). The number of Iba-1 + cells in the irradiation plus terazosin group was decreased by 49% compared with that in the irradiation group ( P=0.036). Conclusion:Terazosin may reduce the hippocampal juvenile neuron loss and inhibit neuroinflammation via microglia activation, which can alleviate WBI-induced cognitive dysfunction to a certain extent.

Relationship between parental rearing style and emotional and behavioral problems of 3-6-year-old children / 中国学校卫生

Objective@#To understand emotional and behavioral problems of children aged 3-6 years, and to explore the role of parenting style in the development of those problems.@*Methods@#A total of 2 278 children from 11 public kindergartens in Tongling City from April to June 2018 were selected by cluster sampling method. The questionnaire was made up by parents. The questionnaire mainly included: children, basic information of parents and children, children’s psychology and behavior, and parents’ education style, etc.@*Results@#Among 2 278 children, 192(8.43%) had abnormal emotional symptoms, 214 (9.39%) had conduct problems, 376(16.50%) had hyperactivity problems, 537(23.57%) had peer problems, 233(10.2%) had abnormal total difficulty scores and 254(11.15%) had prosocial behaviors. Gender, age, health status of the child, second-hand smoke exposure of the baby, parents’ education level, family economic conditions, and parents’ education mode are all the influencing factors of children’s emotion and behavior(P<0.05). Logistic analysis showed that father’s support participation(OR=0.96, 95%CI=0.95-0.98), mother’s support participation (OR=0.94, 95%CI=0.92-0.95), mother’s hostility compulsion (OR=1.08, 95%CI=1.06-1.10) and 3-6-year-old children’s abnormal mood and behavior were correlated(P<0.01).@*Conclusion@#Parental support and maternal hostile are related to emotional and behavioral problems of 3-6-year-old children.

Irradiated glioma cells induce bystander effects in neural stem cells / 中华放射医学与防护杂志

Objective:To investigate whether irradiated U251 glioma cells can induce bystander effects in unexposed neural stem cells (NSCs) thus affecting its proliferation, stemness and differentiation.Methods:The cells were divided into NSCs group, NSCs+ U251 group (co-cultured with U251) and NSCs+ IR U251 group (co-cultured with 10 Gy irradiated U251). Glioma cells and NSCs were co-cultured in a transwell insert set. Cell counting and neurosphere diameter measuring were carried out to evaluate the proliferation and neurosphere formation ability of NSCs. Immunofluorescence assay was performed to detect the expression of Nestin protein to evaluate the stemness maintenance of NSCs, and to measure the expression levels of Tuj1 and GFAP proteins, the number of neuronal dendrites, synaptic length, the number of glial protrusions, as well as the length of glial protrusions.Results:The number of NSCs cultured with irradiated U251 cells was obviously smaller than that of NSCs cultured with sham-irradiated U251 cells ( t=2.52, P<0.05). The neurosphere formation ability of NSCs and the percentage of Nestin positive NSCs after co-culture with irradiated U251 cells significantly reduced in comparison with those after co-culture with sham-irradiated U251 cells ( t=-3.50, P<0.05). The percentages and the extent of NSCs differentiating into neuronal cells and glial cells( t=6.09, P<0.05)decreased obviously after co-culture with irradiated U251 cells in comparison with those after co-culture with sham-irradiated U251 cells. Conclusions:Irradiated glioma cells can significantly inhibit the proliferation, stemness and differentiation of unexposed NSCs due to bystander effect.

Association of HSPA1A gene single nucleotide polymorphisms with the development of cervical cancer among ethnic Han Chinese from Yunnan / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the association of four single nucleotide polymorphisms (SNPs) (rs12190359C>T, rs562047C>G, rs1008438G>T, and rs1043618G>C) of HSPA1A gene with the development of cervical cancer among ethnic Han Chinese from Yunnan.</p><p><b>METHODS</b>One hundred and thirty patients with CIN III, 444 patients with cervical cancer, and 548 healthy individuals were recruited, and the genotypes of the above SNPs were determined with a Taqman assay. Haplotypes were constructed, and their association with the development of cervical cancer was analyzed.</p><p><b>RESULTS</b>The frequencies of G and T alleles of rs1008438G>T were significant different between the CIN III and control groups, as well as between the cancer and control groups (P=0.022 and P=0.030, respectively). There was a significant difference in genotypic frequency of rs1008438G>T between the CIN III and control groups (P=0.047). The allelic and genotypic frequencies of rs12190359C>T, rs562047C>G, and rs1043618G>C did not significantly differ between the CIN III, cervical cancer and control groups (P> 0.05). The frequencies of haplotypes formed by rs562047C>G, rs1008438G>T and rs1043618G>C also did not significantly differ between the CIN III, cancer and control groups (P> 0.05).</p><p><b>CONCLUSION</b>The G allele of rs1008438G>T may be a protective factor for cervical cancer among ethnic Han Chinese from Yunnan.</p>

Application of clinical skills training specification in gynecologic oncology teaching / 基础医学与临床

Clinical skills training is a key factor for improvement of the quality of clinical teaching.Developing highly specific clinical skills training specification is an important step to improve the quality of gynecologic oncology clinical teaching.Based on its importance,a'four steps training strategy,known groups-building specification-train thinking-make a request is developed and used by Dept.of Obsterics and Gynecology,the 3rd Affiliated Hospital,Kunming Medical University.It guides students to achieve the basic theory,basic knowledge and basic skills through a comprehensive way,and it also encourages students with highly learning initiative of gynecologic oncology clinical skills.On the other side,in the clinical skills training will lead teachers to develop their thinking and enhance the enthusiasm of teaching.This method provides a new sight for gynecologic oncology clinical skills training in a new manner.

Correlation between mutation of p53 gene 2-4 exons from peripheral blood and HPV16 positive cervical cancer susceptibility and clinical significance / 中华妇产科杂志

Objective To detect mutations of p53 gene 2-4 exons from peripheral blood and to explore their relevance in HPV16-positive cervical cancer susceptibility and clinical significance. Methods Collected firstly cases from the Third Affiliated Hospital of Kunming Medical University from October 2012 to April 2014, included 167 cases HPV16-postive cervical cancer and 160 cases HPV-negative healthy women. Genomic DNA from the host peripheral venous blood was taken, mutations of p53 gene 2-4 exons were analyzed with software DNAstar after PCR and bidirectional sequencing. Meanwhile,mutations of p53 gene 2-4 exons among different clinicopathological characteristics in HPV16-postive cervical cancer were distinguished. Results (1)Three mutations and an 16-bp insertion/deletion sequences were found in p53 gene exons 2-4, included C/G mutation of single nucleotide polymorphism(SNP)11827 in intron2, A/C mutation of SNP11992 in intron3, C/G mutation in codon 72 (rs1042522) of exon4 and 16-bp(acctggagggctgggg) repeat insertion or deletion in intron3 (rs17878362), while deletion recorded as A1, insertion recorded as A2. No significant differences were found in each point allele and genotype frequency(P＞0.05). (2) Stratified analysis for cervical cancer group resulted with some differences. Compared group of non-squamous carcinoma with squamous carcinoma group, there were obviously decreased in allete A2 [11.8%(4/34) vs 3.5%(10/284); χ2=4.90,P=0.027], genotype A1A2 [4/17 vs 7.0%(10/142); χ2=5.14,P=0.023], and haplotype C-A2 [11.8%(4/34)vs 3.5%(10/284);χ2=4.91,P=0.027]. Compared with poorly differentiated group,allele C of SNP11827 and rs1042522 were obviously decreased in medium high differentiation group [50.8%(61/120)vs 38.8%(62/160);χ2=4.07,P=0.044], while haplotype G-A1 were apparently higher [49.2%(59/120)vs 61.2%(98/160);χ2=4.07,P=0.044], genotype GG of SNP11827 and rs1042522 were obviously decreased in superficial myometrial invasion depth group than that in deep myometrial invasion depth group [46.3%(25/54) vs 21.1%(8/38); χ2=7.06,P=0.029]. No significant differences were found between stage Ⅰ and Ⅱ, pelvic lymph node metastasis or not (all P＞0.05). Conclusions No obvious correlation is found between polymorphisms in exons 2-4 of p53 gene and susceptibility of HPV16-postive cervical cancer. But the patient with allete C and A2, genotype GG and A1A2, haplotype C-A2 and G-A1 may be increase risk of poorly differentiation, deep muscular invasion and bad pathological type. Analysis of p53 gene polymorphism may be provide a basis for the prognosis evaluation and individualized treatment of cervical cancer.

Analysis of factors influencing the health-related quality of life in patients with cervical cancer based on FACT-Cx(V4.0) / 中华疾病控制杂志

Objective To evaluate the health-related quality of life (HRQOL) and its influencing factors in pa tients with cervical cancer.Methods 120 inpatients with cervical cancer at Yunnan Tumor Hospital were investigated by functional assessment of cancer therapy-cervix (FACT-Cx),t-test,analysis of variance and multiple linear regression were used to analyze factors influencing the HRQOL.Results The total HRQOL score of patients was (104.88 ± 19.51),and the domain scores of physical well-being (PWB),social/family well-being (SWB),emotional well-being (EWB),functional well-being (FWB),cervical cancer subscale (CxS) were (20.41 ± 5.46),(17.17 ± 6.10),(15.73 ± 5.06),(13.34 ±5.83),(38.23 ±6.26),respectively.Based on multiple linear regression,the influencing factors of PWB were marital status and clinical stages,the influencing factor of SWB was marital status,the influencing factors of EWB were education levels and clinical stages,the influencing factors of FWB,CxS and total score were all marital status,clinical stages and education levels.Conclusions The HRQOL scores were influenced by a number of factors and it is significant to improve HRQOL in patients with cervical cancer by relieving symptoms and reducing treatment side effects according to patients' specialty,also psychological support and encouragement was essential.

Current research on molecular mechanism of ionizing radiation-induced neurogenesis disorders / 中华放射肿瘤学杂志

With the development of modern radiotherapy techniques,radiotherapy has been widely used in the multimodality therapy for various malignant tumors,including head and neck cancers such as nasopharyngeal cancer and laryngeal cancer.A combination of surgery and radiochemotherapy significantly improves patients' cure rate and survival time;however,with the increase in survival time,some patients receiving radiotherapy develop marked cognitive impairment.Ionizing radiation-induced cognitive impairment mainly nanifests as hippocampus-dependent cognitive impairment,which is associated with inhibited hippocampal neurogenesis due to ionizing radiation.Therefore,it is necessary to investigate the mechanisms of the inhibition of hippocampal neurogenesis by ionizing radiation.This article reviews the molecular mechanism of neurogenesis disorders induced by ionizing radiation.

Research progress of microRNA-214 in the cervical cancer / 医学研究生学报

MicroRNAs ( miRNAs ) play important roles in the processes of the occurrence and development of cancers , through regulating tumor related gene expression at post-transcription.It has shown that the expression of miR-214 is aberrant in cervi-cal cancer.Also,miR-214 could affect the proliferation, migration, invasion and apoptosis of tumor cells by targeting various genes . This article focuses on the studies of miR-214 function in cervical cancer , and will provide a novel approach for the clinical diagnosis and the treatment of cervical cancer .

Analysis of influence factors on quality of life in patients with ovarian cancer based on QLICP-OV / 重庆医学

Objective To analyze the influence factors on quality of life(QOL) in patients with ovarian cancer in order to provide the basis for improving QOL of patients with ovarian cancer .Methods The quality of life of 73 patients with ovarian cancer was investigated by QLICP‐OV questionnaire .Descriptive statistics ,one‐way analysis of variance ,t‐test and multiple linear regres‐sion analysis were used to explore impact factors of quality of life .Results The total QOL score of 73 patients with ovarian cancer was 64 .85 ± 9 .37 .Single factor analysis indicated that nation ,marital status ,education ,occupation and medical treatments were sig‐nificantly related to some domains scores of the QLICP‐OV(P<0 .05) .The multivariate linear regression analysis indicated that the influence factor on quality of life in patients with ovarian cancer for the domain of physical function was education with regression coefficient being -9 .786;Influence factor for the domain of psychological function was education with regression coefficient being 6 .559;the influencing factors for the specific module were marital status ,medical treatment ,and age with regression coefficients be‐ing -9 .174 ,-7 .142 and 0 .245 ,respectively .Conclusion The quality of life in patients with ovarian cancer was low and it was af‐fected by a lot of factors .

Study on relationship between human papilloma virus,telomerase gene and chromosome 3 number with cervical lesions / 国际检验医学杂志

Objective To explore the relationship between the expression of human telomerase RNA component (TERC) gene , human papilloma virus (HPV) infection and mutation of chromosome 3 number with cervical lesions .Methods 81 women received the treatment in the Gynecology Department of the Second Affiliated Hospital of Kunming Medical University from June 2008 to February 2009 ,including the healthy group(normal pathological examination ,20 cases) ,CIN1 group(28 cases) ,CIN2 group(12 ca‐ses) ,CIN3 group(9 cases) and cervical cancer group(12 cases) .The TERC gene expression in uterine epithelial exfoliated cells was detected by using the fluorescence in situ hybridization (FISH) method ,meanwhile the HPV infection was detected by using the real time fluorescence quantitative polymerase chain reaction (FQPCR) technology .The correlation between cervical cancer with TERC gene and HPV was analyzed .At the same time the number of chromosome 3 mutations in 81 cases was recorded .Results In the cervical lesion detection ,the detection positive rate had no statistical difference between the TERC gene detection and HPV detec ‐tion (P> 0 .05) ,their positive rates in the CIN 1 ,CIN2 ,CIN3 and cervical cancer groups were significantly higher than that in the healthy group (P 0 .05) , while between the CIN3 group and the cervical cancer group had statistical significance (P< 0 .05) ,the higher the malignant degree , the higher the positive rate .The abnormal mutation rate of chromosome 3 number was 0% in the healthy group and the CIN1 group ,16 .7% in the CIN2 group ,66 .7% in the CIN3 group and 100 .0% in the cervical cancer group ,the positive rate in the CIN3 group and the cervical cancer group was significantly higher than that in the healthy group ,CIN1 group and CIN2 group ,the differ‐ences were statistically significant (P< 0 .05) .Conclusion The TERC abnormal gene expression ,high risk HPV infection and mutation of chromosome 3 number could play an important synergistic effect during the process of occurrence and progression of cervical cancer .

Reasearch progress of cervical cancer screening / 国际肿瘤学杂志

As to clarify the cause of cervical cancer,early normative and effective screening can decrease the incidence and mortality of precancerous cervical lesions and cervical cancer.At present the main methods for cervical cancer screening are pap smear method,acetic acid shading to naked eye observation,iodine staining to the naked eye observation,liquid based cytology and human papillomavirus DNA testing methods.Screening techniques and strategies are different in different areas and countries because of unbalanced economic development.

Analysis of distribution and drug resistance of bacteria infection in the Second Affiliated Hospital of Kunming Medical University / 国际检验医学杂志

Objective To investigate the distribution and drug resistance of clinical bacteria infection in the Second Affiliated Hospital of Kunming Medical University,so as to provide reference for the treatment of bacterial infections.Methods 4 802 strains of bacteria isolated from this hospital,from January 2013 to December 2013,were retrospectively analysed.The isolates were identi-fied by using VITEK-2 Compact bacterial identification system.Drug resistance was measured by using disc diffusion test,and its results were interpreted according to the breakpoints of Clinical and Laboratory Standards Institute(CLSI)2013.WHONET 5.6 was applied for analysis.Results These pathogens were mainly isolated from urine,sputum,blood,secretions and pus,accounted for 31.7%,21.4%,1 9.7%,1 1.7% and 7.0%,respectively.In the clinical isolates,gram negative bacilli accounted for 55.8%, which was mainly Escherichia coli(26.3%).Gram positive cocci accounted for 31.7%,,which was mainly coagulase negative staph-ylococcus(1 5.0%).Fungi accounted for 3.1%,which was mainly Candida albicans.Escherichia coli and Klebsiella pneumonia were most sensitive to carbapenem,resistance rate was less than 10.0%.The detection rates of Escherichia coli and Klebsiella pneumoni-ae producing extended-spectrumβ-lactamases(ESBLs)was 61.1% and 49.1%,respectively.Among non-fermentative gram nega-tive bacilli,excepting Pseudomonas aeruginosa had good sensitivity to Amikacin,Pseudomonas aeruginosa and Acinetobacter bau-mannii showed high resistance to most antibiotics(resistance rate was more than 50.0%).Among gram positive bacteria,the detec-tion rates of meticillin-resistant Staphylococcus aureus and methicillin-resistant coagulase negative Staphylococcus were 42.3% and 65.6%,respectively.The resistance rates of Enterococcus faecium to most of antibacterials were higher.Except for linezolid and teicoplanin,the resistances of Enterococcus faecium to other antibacterials were higher than those of Enterococcus faecalis.Only a strain of Enterococcus faecium resistant to vancomycin was isolated.Conclusion Resistance monitoring might have significance in guiding the clinical rational use of antimicrobial agents,and reducing the spread of antibiotic resistance in bacteria.

Evaluation of radionuclide therapy for the residue after surgery in papillary thyroid carcinoma / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To assess the efficacy of radioactive iodine (RAI) for the treatment of residual papillary thyroid cancer (PTC) after surgery.</p><p><b>METHODS</b>A total of 20 patients diagnosed with PTC and underwent 2-6 courses of RAI therapy for residual PTC after surgery in other hospitals were included our study. Of these, 13 were in stage I, 3 in stage III and 4 in stage IV. All the cases were operated again due to the presence of suspicious residual tumors indicated by CT. Excision of thyroid tumor residue was performed in 5 cases and neck dissection in 15 cases (20 sides). The suspicious thyroid or neck residual tumors were examined pathologically after surgery. Response Evaluation Criteria in Solid Tumors (RECIST) was used to evaluate the efficacy of surgery treatment on residual tumor. T-test was used to identify variables associated to RAI and to calculate the propensity score to receive RAI after surgery.</p><p><b>RESULTS</b>The patients aged 22-58 years, with a median age of 40 years. The mean times of surgeries received before RAI was 1.5 and the mean dose of applied RAI was 318 mCi (210-660 mCi). No significant difference in tumor size between pre-RAI and post-RAI was found (t = 1.177, P > 0.05). With postoperative pathological examination, the suspicious thyroid or neck residual tumors were confirmed as PTC or the cervical lymph metastasis of PTC.</p><p><b>CONCLUSIONS</b>For the residue or metastasis of PTC after operation, reoperation should be a priority, while RAI therapy has no obvious therapeutic effect and it should be limited to selected cases such as those with distant metastasis or unsuitable for operation but with iodine uptake function, or taken as an adjuvant treatment after radical resection of cervical lesions.</p>

Analysis of the effectiveness of radiotherapy in postoperative residual tumors in patients with thyroid papillary carcinoma / 中华肿瘤杂志

<p><b>OBJECTIVE</b>The aim of this study was to assess the impact of radiotherapy on patients with postoperative residual or recurrent papillary thyroid cancer (PTC).</p><p><b>METHODS</b>We retrospectively reviewed the medical records of 34 patients with PTC, who underwent surgery and radiotherapy in other hospitals, and treated at the Department of Head and Neck Surgery at Cancer Institute & Hospital CAMS from January 2011 to January 2014. Among the 34 cases, 22 were in stage I, 5 in stage II and 7 in stage IVa. The 34 patients received 1.5 times of surgery before radiotherapy in average. All the cases received radiotherapy (mean, 56 Gy; range, 50-70 Gy). The patients were re-operated in our hospital, and the specimens were examined by pathology. The pre- and post-radiotherapy images (CT and B-ultrasound) were compared, and the changes of tumor volume were examined. The objective effect of treatment on the tumor residual focus was evaluated using RECIST, and analyzed by t-test (SPSS 17.0).</p><p><b>RESULTS</b>All the re-resected lesions after radiotherapy were proved by pathology to be papillary thyroid cancer (PTC) or metastatic PTC in cervical lymph nodes. Among the 34 patients, 22 cases showed mild or moderate cell degeneration and the other 12 cases showed no obvious degeneration. The largest tumor diameter was 27.18 mm before radiotherapy and 27.76 mm after radiotherapy, with a non-significant difference between them (t=-1.618, P>0.05). Among the 34 patients, only 3 patients received reoperation, all other 31 cases had complete resection, and no severe complications were observed except recurrent laryngeal nerve injury in one case.</p><p><b>CONCLUSIONS</b>Radiotherapy has few therapeutic benefit to PTC patients after surgery with residual tumor or local recurrence. It should be used in the PTC patients, in which the tumor invasion involves important organ tissues and is difficult for a single operation to achieve safe resection margin, or in patients who can't bear a surgery because of severe coronary heart disease or others.</p>

X-ray irradiation modulates the expressions of free ubiquitin in the serum, small intestine, and heart of C57 BL/6N mice / 中华放射医学与防护杂志

Objective To investigate the effect of X-ray irradiation on the expression of free ubiquitin in the serum, small intestine, and heart tissues of C57 BL/6N mice. Methods The amount of free ubiquitin protein in the serum and tissue homogenates was analyzed quantitatively with ELISA and Western Blotting assay. The mRNA expressions of free ubiquitin in the tissues were detected by RT-PCR. Results At 24 or 48 h after radiation, the free ubiquitin level in the serum and small intestine tissue increased asymptotically with increasing of radiation dose (F=183?1, 435?3, P 0?05). Conclusions Because of the high expressions of free ubiquitin protein in the radiosensitive mice tissues, X-ray radiation could increase the concentration of free ubiquitin in serum. The changes of free ubiquitin may be related to cellular radiosensitivity and tissue injury.

Comparison of immunohistochemistry with fluorescence in situ hybridization in determining the human epidermal growth factor receptor 2 status of breast cancer specimens: a multicenter study of 3,149 Chinese patients / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Accurate detection of human epidermal growth factor receptor 2 (HER2) expression and gene amplification is crucial for the application of HER2-specific therapy and for evaluating the response of patients with breast cancer. A uniform and standard procedure of immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) needs to be established for evaluating the HER2 status in breast cancer tissues for the treatment of patients with real HER2-positive tumors. The present multicenter study was aimed to examine the HER2 status in breast cancer specimens from Chinese patients using both IHC and FISH methods.</p><p><b>METHODS</b>A multicenter study was performed on the HER2 status in 3 149 breast cancer specimens from different ethnic populations and areas in China by IHC and FISH assays. The potential association of HER2 status with demographic and clinical characteristics was analyzed.</p><p><b>RESULTS</b>The positive rates for HER2 over-expression and HER2 amplification were 23.3% and 27.5% in this study, respectively. The concordance between IHC and FISH was 71.2% (κ = 0.494, P < 0.001). Furthermore, 72.9% of specimens with IHC 2+ were negative to FISH. The discordance rates among laboratories were from 5% to 28% for IHC and 1% to 16% for FISH. HER2 amplification was associated significantly with advanced tumor stage (III or IV, P = 0.002), large tumor size (>5 cm, P = 0.002), moderate and poor histological grades (P < 0.0001), post-menopause (P < 0.0001), ER-PR- (P = 0.002), and having ≥ 4 lymph nodes affected (P < 0.0001) in this population. The positive rates of HER2 amplification in specimens from Man and Hui Chinese were significantly higher than that in other Chinese populations. There are slightly higher positive rates of HER2 expression and amplification in Chinese patients with breast cancer.</p><p><b>CONCLUSION</b>These findings may provide new insights into understanding the epidemiological features of HER2 expression and amplification, and may be valuable for clinical practice.</p>

The survey on female sexuality and HPV awareness in Linxiang district of Yunnan province / 重庆医学

Objective To understand information of initial sexual behavior age of females in Linxiang district of Yunnan province and investigate HPV and HPV vaccine awareness of rural women ,health workers and government staff .Methods During Decem-ber 2009 to December 2010 ,750 cases aged from 15 to 59 years included rural women ,government officials and medical staff in Linxiang district were randomly selected and investigated .Results The age of first sex was (22 .4 ± 2 .3) years old .The number of sexual partners was (1 .2 ± 0 .3) and proportion of premarital sex was low (8 .8% ) .HPV vaccine awareness of rural women was 8 .59% .The proportion of people who knew HPV vaccine could prevent cervical cancer was 6 .57% .The proportion of people who wanted to be vaccinated was 97 .66% .The cost of HPV vaccine which rural women could accept was 300 yuan .Conclusion Women in Linxiang area of Yunnan province have less premarital sex and lack of awareness in HPV .

The detection of BRAF mutations and its clinical significance in colorectal cancer patients / 中华检验医学杂志

Objective To determine the mutant status of BRAF gene in Chinese colorectal cancer (CRC) patients and analyze the association with clinicopathological parameters.Methods 676 CRC samples were collected in Cancer Institute/ Hospital,Chinese Academy of Medical Science from December 2009 to December 2011.The direct sequencing was conducted to detect mutations in the BRAF (exon 15 and exon 11).The correlation between mutant status with clinicopathological parameters were analyzed.Results Beside 10 colorectal cancer samples,among the 666 colorectal cancer patients 4.35％ (29/666) of the tumors harbored a BRAF mutation,of which 1.94％ (13/669) in exon 15 (V600E),2.39％ (16/670) in exon 11.Statistical analysis revealed that BRAF15 mutations appeared to occur more frequently in poor-differentiation tumors than high or moderate-differentiation tumors (5.81％ vs 1.46％,r =0.105,P=0.040).But BRAF15 mutations were not correlated with age,gender,smoking and drinking history,tumor site,tumor type,tumor(T/N) staging,histological type,or distant metastasis [r equals to 0.007,-0.018,-0.049,-0.023,-0.098,-0.038,0.040(0.034/0.059),0.065,0.042,respectively,P ＞ 0.05] ; BRAF11 mutations appeared to occur more frequently in patients with drinking history (6.02％vs 1.81％,r =0.093,P =0.035).However,age,gender,smoking history,tumor site,tumor type,tumor differentiation,tumor(N) staging,histological type,or distant metastasis showed no significant correlation with this mutation [r equals to-0.004,0.047,0.020,0.042,0.029,0.040,0.006 (-0.008),0.008,0.030,respectively,P ＞ 0.05].Conclusion A higher proportion of BRAF15 (V600E) mutations occurred in poor-differentiation tumors among the Chinese patients with CRC; BRAF11 mutations appeared more frequently in patients with drinking history.