The incidence of thyroid carcinoma has been increasing in recent years.More and more researchers have paid attention to this field and great achievements have been made year by year.The developments on gene diagnosis and molecular markers of thyroid carcinoma are reviewed in this article.

ObjectiveTo explore the clinical and pathological features of Hainan patients with thyroid carcinoma treated in Hainan Provincial People' s Hospital.Methods A total of 239 clinical cases of Hainan patients with thyroid carcinoma treated in Hainan Provincial People' s Hospital from 2006 to 2010 were retrospectively analyzed.Results The number of thyroid carcinoma cases between 2006 to 2008 was stable.But the cases in 2009 were 72.97％ higher than that in 2008.Female' s peak of onset age was 25 to 55 years and male was 20 to 55 years.The cases of Hant were 231 (96.65％) and the national minority were 8(3.35％ ).So ethnic composition ratio between cases and local population has a very significant difference (x2 =21.376,P ＜0.01 ).The eastern and western regions had 175 cases and 64 cases respectively,138 (78.86％) and 34(46.88％ ) cases from city respectively.Urban and rural ratio between eastern and western areas had a significant difference (x2 =4.420,P ＜ 0.05 ).The 239 cases were composed of 228 cases (95.4％) of papilarry thyroid carcinoma,7 cases (2.92％) of medullary thyroid carcinoma,both 2 cases (0.84％) of follicular thyroid carcinoma and anaplastic thyroid carcinoma.Conclusions The incidence of Hainan nationality patients with thyroid carcinoma treated in Hainan Provincial People' s Hospital has increased from 2006 to 2010,with younger trend and regional difference.Thyroid carcinoma has a difference in race and region.The rank of the rate of pathological type is papillary thyroid carcinoma,medullary thyroid carcinoma,follicular thyroid carcinoma,undifferentated thyroid carcinoma in order.

Objective To identify the species classification of an ornamental Planorbidae from a flower market in Shanghai and analyze its potential distribution in China. Methods In August 2013,six freshwater snail specimens were collected from the Wanshang flower market. The species was identified by morphology and molecular biology. An ecological niche model was constructed based on the native geographic presence occurrence data,and projected onto the whole of China to predict the poten?tial distribution. Results Their shell external morphology suggested that the specimens belonged to Planorbella trivolvis(Say 1817)of Planorbidae,which is native in North America. The sequence data of a fragment of the mitochondrial cytochrome c oxi?dase subunit I(COI)confirmed its identification. A total of 2 294 georeferenced occurrence points in North America were car?ried out from the Global Biodiversity Information Facility databases and 614 records with coordinates were used to produce a North American native niche model by a maximum entropy method(Maxent). The projection on China results suggested high probabilities of occurrence mostly in Henan Province and its borderland with nearby provinces. Conclusions P. trivolvis is sim?ilarly with Biomphalaria species from shell morphology. It is the first records of the species in China,and the field dispersal is not clear.

Objectives To investigate the expression and differential diagnosis value of Galectin-3 and Cyclin D1 in benign and malignant thyroid mass.Methods The expression of Galectin-3 and Cyclin D1 protein in 31 cases of nodular goiter(group A),65 cases of papillary thyroid carcinoma(PTC,group B) and 10 cases of normal thyroid tissues(group C,the control group)was detected by SP immunohistochemical method.The clinical data were analyzed.Results The expression level of Galectin-3 in group B was 83.03％ (54/65),significantly higher than that in group A(19.35％,6/31) and group C(0％).The difference of group A and group B in terms of the expression level of Galectin-3 protein had statistical significance(x2 =36.360,P ＜0.05).The expression level of Cyclin D1 protein in group B was 72.30％ (47/65),significantly higher than that in group A(12.90％,4/31)and group C(0％).The difference of group A and group B in terms of the expression level of Cyclin D1 protein had statistical significance(x2 =29.740,P ＜ 0.05).The combination detection of the positive expression of Galectin-3 and Cyclin D1 in benign and malignant thyroid mass showed that the difference between group A and group B had statistical significance(P ＜ 0.01).The expression of Galectin-3 and Cyclin D1 was positively correlated in group B(R =0.509,P ＜0.05).The positive expression rate of Cyclin D1 protein was 90％ (18/20) and 64.44％ (29/45)respectively in PTC patients with lymph node metastasis and without lymph node metastasis.The difference had statistical significance (P ＜ 0.05).Conclusions The expression of Galectin-3 and Cyclin D1 is positively correlated in PTC and the expression of the 2 proteins in PTC is higher than that in nodular goiter and normal thyroid tissues,indicating that the 2 proteins can be used as valuable markers for patients with thyroid carcinoma.Combined detection of Cyclin D1 and Galectin-3 protein in thyroid tissues is useful for the diagnosis of thyroid cancer.

Objective To evaluate the efficacy and safety of 650 nm,810 nm diode laser on the treatment of moderate to severe acne.Methods A total of 87 patients with moderate to severe acne were divided into diode laser group (group A) and medication group (group B).In group A,the patients were irradiated with 650,810 nm diode laser at the fluence of 400-450 mW distance of 2-3 cm.In group B,the patients were treated with roxithromycin combined with vitamin B6 and gel lincomycini.Clinical follow-up was performed every week for 4 months.All the adverse effects were recorded.Results There was no significantly statistical difference in the cure rate between the two groups (group A versus group B at 2 weeks:65.0 ％ versus 42.6 ％,P＞0.05; at 4 weeks:92.5 ％ versus 76.5 ％,P＞0.05).However,the recurrence rate of group A was much lower than that of group B (30.0 ％ versus 61.7 ％,P＜0.01).There were no severe adverse effects in both groups during the period of the follow-up.Conclusions Compared to the medication,650,810 nm diode laser appears to be associated with lower recurrence rate in the treatment of moderate to severe acne.

Objective To compare the diversity of mitochondrial genomes of Angiostrongylus cantonensis in the mainland of China. Methods According to the population genetic of A. cantonensis,seven female worms were selected to characterize the mi-tochondrial(MT)genomes. Twelve primer pairs based on known MT genome(GQ398121)were used for PCR. The target frag-ments were sequenced and aligned. The gene localization,genome structure,composition of nucleotide,distribution of variable sites,and phylogeny were analyzed by employing multiple softwares. Results Five distinct types were identified from seven com-plete MT genomes. They were similar in size and structure,i.e.,ranging 13 491-13 502 bp,including 12 protein-coding genes,2 ribosomal genes,22 tRNA genes,and 2 major non-coding regions. All the genes were localized at the same strand and had the same transcription direction. A total of 745 variable sites were identified,accounting for 5.5%. Among the variable sites,59 were deletion/insert mutations,105 transversions,and 581 transitions. The variable sites distributed evenly at the complete genome. Conclusion The study reveals the mutation profile in the whole MT genome of A. cantonensis and thus will facilitate the develop-ment of intraspecific differential diagnosis.

Objective To investigate the species diversity and distribution of medical mollusca in Shanghai City. Methods From August 2012 to October 2013,all kinds of habitats in 8 districts and counties in Shanghai City,namely Jiading,Qingpu, Baoshan,Minhang,Songjiang,Jinshan,Chongming,Pudong,were selected for the field survey according to the distribution characteristics of the river system,and all the specimens of medical mollusca in the investigation sites were collected and classi?fied by morphological identification. Meanwhile,the species composition,habitats as well as the fauna of the medical mollusca collected were analyzed. Results A total of 5 211 specimens were collected,which belonged to 2 classes,14 families,18 gen?era and 25 species,including Oncomelania hupensis hupensis,Pomacea canaliculata,Parafossarulus striatulus,Alocinma longicornis,Physa acuta,Galba pervia,Hippeutis cantori,etc. The species numbers of medical mollusca in Chongming,Jin?shan,Pudong new area and Qingpu districts(counties)were 22,22,21 and 20,respectively,which were more than those of other areas. The habitat analysis suggested that the species numbers in the river and wetland were the most,both of which were 14 species. The main faunas of the medical mollusca in Shanghai were the cosmopolitan and oriental species. Conclusions The freshwater gastropod species are paucity in Shanghai City,but almost of them can be served as the intermediate hosts of certain parasites to transmit snail?related parasitic diseases,so the surveillance of medical mollusca should be strengthened.

OBJECTIVETo investigate the associated high risk factors of postoperative relapse and metastasis for patients with confined tumors (grade pT1b-4a) without lymph-node metastases (pN0) in thoracic esophageal squamous cell carcinoma (ESCC).

METHODSClinicopathological and follow up data of ESCC patients undergoing radical surgical resection as primary treatment in the Department of Thoracic Surgery, Shanghai Chest Hospital between January 2004 and December 2012 from Hospital Database were retrospectively collected. The inclusion criteria were as follows: (1) the first development of ESCC confirmed by histopathology without lymphatic and distant metastasis; (2) pathological stage of pT1bN0M0 to pT4aN0M0 according to the Union for International Cancer Control (UICC) in 2009; (3) curative trans-thoracic esophagectomy with R0 (tumor-free surgical margin) resection, using the Ivor-Lewis or McKeown procedure; two-field lymphadenectomy or three-field lymph node dissection based on the positive results of preoperative cervical ultrasonography examination or CT scan; (4) without adjuvant chemotherapy and/or radiotherapy before and after operation; (5) complete follow-up data. Logistic regression analysis was employed to identify the clinicopathological factors affecting the postoperative relapse and metastasis.

RESULTSA total of 112 patients were eligible, including 94 male cases and 18 female cases; age of (58.6±7.7) years; squamous carcinoma of upper thorax in 25 cases, of middle thorax in 67 cases and of lower thorax segment in 20 cases; 12 cases of high-differentiated ESCC, 49 cases of moderate-differentiated ESCC, poorly-differentiated ESCC in 48 cases; 4 cases of I(a stage, 9 cases of I(b, 24 cases of II(a, 62 cases of II(b, 13 cases of III(a; the tumor length >4 cm in 43 cases, ≤4 cm in 69 cases. Forty-three (38.4%) patients presented relapse or metastasis during the follow-up, including 24 (21.4%) of loco-regional relapse, 13 (11.6%) of distant metastasis, and 6(5.4%) of both above. Multivariate regression analysis revealed that poorly-differentiated tumor (OR=1.899, 95%CI:1.233-2.925, P=0.004), upper-middle location (OR=2.351, 95%CI:1.188-4.653, P=0.014), and tumor length >4 cm (OR=2.381, 95%CI:1.009-5.618, P=0.048) were independent risk factors of overall postoperative relapse and metastasis for thoracic ESCC with stage pT1b N0M0-T4aN0M0. Further stratified analysis identified that only poorly-differentiated tumor (OR=1.730, 95%CI:1.121-2.671, P=0.013) was an independent risk factor of loco-regional relapse, whereas pathological stage II(b-III(a (OR=3.372, 95%CI:1.206-9.428, P=0.021) was an independent risk factor of distant metastasis.

CONCLUSIONSPoorly-differentiated tumor, tumor length >4 cm, and upper-middle location may be regarded as high risk factors for predicting overall relapse and metastasis of pN0 thoracic ESCC patients after esophagectomy. Moreover, poorly-differentiated tumor is the only independent risk factor of postoperative loco-regional relapse, meanwhile it should be noted that pathological stage II(b-III(a is closely related to postoperative distant metastasis.

Objective To investigate the origin of Biomphalaria straminea in China, so as to provide insights into assessment of schistosomiasis mansoni transmission risk and B. straminea control. Methods Guanlan River, Dasha River, Shenzhen Reservoir, upper and lower reaches of Kuiyong River, and Xinzhen River in Shenzhen, China, were selected as sampling sites. Ten Biomphalaria samples were collected from each site, and genomic DNA was extracted from Biomphalaria samples. DNA samples were obtained from 15 B. straminea sampled from 5 sampling sites in Minas Gerais State, Pará State, Federal District, Pernambuco State, and Sao Paulo State in Brazil, South America. Cytochrome c oxidase I (COI) and mitochondrial 16S ribosomal RNA (16S rRNA) genes were sampled using the above DNA templates, and the amplified products were sequenced. The COI and 16S rRNA gene sequences were downloaded from GenBank, and the sampling sites were acquired. All COI and 16S rRNA gene sequences were aligned and evolutionary trees of B. straminea were created based on COI and 16S rRNA gene sequences to identify the genetic similarity and evolutionary relationship between B. straminea samples from China and South America. Results A total of 60 COI gene sequences with a length of 529 bp and 3 haplotypes were obtained from B. straminea sampled from China. There were 165 COI gene sequences of B. straminea retrieved from GenBank, and following alignment with the above 60 gene sequences, a total of 33 haplotypes were obtained. Phylogenetic analysis showed that the three haplotypes of B. straminea from China were clustered into one clade, among which the haplotype China11 and three B. straminea samples from Brazil retrieved from GenBank belonged to the same haplotype. Geographical evolution analysis showed that the B. straminea samples from three sampling sites along eastern coasts of Brazil had the same haplotype with China11, and B. straminea samples from other two sampling sites were closely, genetically related to China11. A total of 60 16S rDNA gene sequences with approximately 322 bp in length were amplified from B. straminea in China, with 2 haplotypes identified. A total of 70 16S rDNA gene sequences of B. straminea were captured from GenBank. Phylogenetic analysis showed that Biomphalaria snails collected from China were clustered into a clade, and the haplotype China64 and the haplotype 229BS from Brazil shared the same haplotype. The 49 16S rDNA gene sequences of B. straminea from 25 sampling sites in southern Brazil, which were captured from GenBank, were included in the present analysis, and the B. straminea from 3 sampling sites shared the same haplotype with China64 in China. Geographical evolution analysis based on COI and 16S rRNA gene sequences showed that B. straminea sampled from eastern coastal areas of Brazil shared the same haplotypes in two gene fragment sequences with Biomphalaria snails collected from China. Conclusions The Biomphalaria snails in China are characterized as B. straminea, which have a low genetic diversity. The Biomphalaria snails in China have a high genetic similarity with B. straminea sampled from eastern coastal areas of Brazil, which may have originated from the eastern coastal areas of Brazil.