International scientific communications in the field of colorectal tumour markers

AIM To analyze scientometrically the dynamic science internationalization on colorectal tumour markers as reflected in five information portals and to outline the significant journals, scientists and institutions.METHODS A retrospective problem-oriented search was performed in Web of Science Core Collection(Wo S), MEDLINE, BIOSIS Citation Index(BIOSIS) and Scopus for 1986-2015 as well as in Dervent Innovations Index(Derwent) for 1995-2015. Several specific scientometric parameters of the publication output and citation activity were comparatively analyzed. The following scientometric parameters were analyzed:(1) annual dynamics of publications;(2) scientific institutions;(3) journals;(4) authors;(5) scientific forums;(6) patents-number of patents, names and countries of inventors, and(7) citations(number of citations to publications by single authors received in WoS, BIOSIS Citation Index and Scopus).RESULTS There is a trend towards increasing publication output on colorectal tumour markers worldwide along with high citation rates. Authors from 70 countries have published their research results in journals and conference proceedings in 21 languages. There is considerable country stratification similar to that in most systematic investigations. The information provided to end users and scientometricians varies between these data-bases in terms of most parameters due to different journal coverage, indexing systems and editorial policy. The lists of the so-called "core" journals and most productive authors in Wo S, BIOSIS, MEDLINE and Scopus along with the list of the most productive authors-inventors in Derwent present a particular interest to the beginners in the field, the institutional and national science managers and the journal editorial board members. The role of the purposeful assessment of scientific forums and patents is emphasized. CONCLUSION Our results along with this problem-oriented collection containing the researchers' names, addresses and publications could contribute to a more effective international collaboration of the coloproctologists from smaller countries and thus improve their visibility on the world information market.

Impact of hepatectomy and postoperative adjuvant transarterial chemoembolization on serum tumor markers and prognosis in intermediate-stage hepatocellular carcinoma

BACKGROUND Primary hepatocellular carcinoma(HCC)is a common malignant tumour,and its early symptoms are often not obvious,resulting in many patients experiencing middle-to late-stage disease at the time of diagnosis.The optimal time for surgery is often missed for these patients,and those who do undergo surgery have unsatisfactory long-term outcomes and a high recurrence rate within five years.Therefore,postoperative follow-up treatments,such as transhepatic arterial chemoembolization(TACE),have become critical to improving survival and reducing recurrence rates.AIM To validate the prophylactic role of TACE after hepatic resection and to assess its impact on patient prognosis.METHODS This study investigated the efficacy of TACE in patients with intermediate-stage HCC after hepatectomy.When the post-treatment results of the observation group and the control group were compared,it was found that the inclusion of TACE significantly improved the clinical efficacy,reduced the levels of tumour markers and did not aggravate the damage to liver function.Thus,this may be an effective and comprehensive treatment strategy for patients with intermediate-stage HCC that helps to improve their quality of life and survival time.RESULTS When the baseline data were analysed,no statistical differences were found between the two groups in terms of gender,age,hepatitis B virus,cirrhosis,Child-Pugh grading,number of tumours,maximum tumour diameter and degree of tumour differentiation.The assessment of clinical efficacy showed that the post-treatment overall remission rate of the observation group was significantly higher than that of the control group.In terms of changes in tumour markers,the alpha-fetoprotein and carcinoembryonic antigen levels in the patients in the observation group decreased more significantly after treatment compared with those in the control group.When post-treatment changes in liver function indicators were analysed,no statistical differences were found in the total bilirubin,alanine aminotransferase and aspartate aminotransferase levels between the two groups.CONCLUSION In patients with intermediate-stage HCC,post-hepatectomy TACE significantly improved clinical outcomes,reduced tumour-marker levels and may have improved the prognosis by removing residual lesions.Thus,this may be an effective and comprehensive treatment strategy for patients with intermediate-stage HCC.

Development and application of hepatocellular carcinoma risk prediction model based on clinical characteristics and liver related indexes

BACKGROUND Hepatocellular carcinoma(HCC)is difficult to diagnose with poor therapeutic effect,high recurrence rate and has a low survival rate.The survival of patients with HCC is closely related to the stage of diagnosis.At present,no specific serolo-gical indicator or method to predict HCC,early diagnosis of HCC remains a challenge,especially in China,where the situation is more severe.AIM To identify risk factors associated with HCC and establish a risk prediction model based on clinical characteristics and liver-related indicators.METHODS The clinical data of patients in the Affiliated Hospital of North Sichuan Medical College from 2016 to 2020 were collected,using a retrospective study method.The results of needle biopsy or surgical pathology were used as the grouping criteria for the experimental group and the control group in this study.Based on the time of admission,the cases were divided into training cohort(n=1739)and validation cohort(n=467).Using HCC as a dependent variable,the research indicators were incorporated into logistic univariate and multivariate analysis.An HCC risk prediction model,which was called NSMC-HCC model,was then established in training cohort and verified in validation cohort.RESULTS Logistic univariate analysis showed that,gender,age,alpha-fetoprotein,and protein induced by vitamin K absence or antagonist-II,gamma-glutamyl transferase,aspartate aminotransferase and hepatitis B surface antigen were risk factors for HCC,alanine aminotransferase,total bilirubin and total bile acid were protective factors for HCC.When the cut-off value of the NSMC-HCC model joint prediction was 0.22,the area under receiver operating characteristic curve(AUC)of NSMC-HCC model in HCC diagnosis was 0.960,with sensitivity 94.40%and specificity 95.35%in training cohort,and AUC was 0.966,with sensitivity 90.00%and specificity 94.20%in validation cohort.In early-stage HCC diagnosis,the AUC of NSMC-HCC model was 0.946,with sensitivity 85.93%and specificity 93.62%in training cohort,and AUC was 0.947,with sensitivity 89.10%and specificity 98.49%in validation cohort.CONCLUSION The newly NSMC-HCC model was an effective risk prediction model in HCC and early-stage HCC diagnosis.

Dynamic monitoring of carcinoembryonic antigen,CA19-9 and inflammation-based indices in patients with advanced colorectal cancer undergoing chemotherapy

BACKGROUND The roles of carcinoembryonic antigen(CEA)and carbohydrate antigen(CA19-9)in monitoring the patient response to chemotherapy for metastatic colorectal cancer(mCRC)are not clearly defined,and inflammatory indices,including the neutrophil-to-lymphocyte ratio(NLR),lymphocyte-to-monocyte ratio(LMR),platelet-to-lymphocyte ratio(PLR)and systemic immune-inflammation index(SII),have been sparsely investigated for this purpose.AIM To aim of this study was to evaluate the relationship between the kinetics of CEA,CA19-9,NLR,LMR,PLR and SII in serum and patient response to chemotherapy estimated by computed tomography(CT)in patients with unresectable mCRC.METHODS Patients with mCRC treated with a 1st-line and 2nd-line chemotherapy underwent at least 3 whole-body spiral CT scans during response monitoring according to the Response Evaluation Criteria in Solid Tumour 1.1(RECIST 1.1),and simultaneous determination of CEA,CA19-9,neutrophil,lymphocyte,platelet and monocyte levels was performed.The kinetics of changes in the tumour markers and inflammatory indices were calculated as the percentage change from baseline or nadir,while receiver operating characteristic curves were drawn to select the thresholds to define patients with progressive or responsive disease with the highest sensitivity(Se)and specificity(Sp).The correlation of tumour marker kinetics with inflammatory index changes and RECIST response was determined by univariate and multivariate logistic regression analysis and the clinical utility index(CUI).RESULTS A total of 102 patients with mCRC treated with chemotherapy were included.Progressive disease(PD),defined as a CEA increase of 25.52%,resulted in an Se of 80.3%,an Sp of 84%,a good CUI negative[CUI(Ve-)]value of 0.75 and a good fraction correct(FC)value of 81.2;at a CEA cut-off of-60.85%with an Se of 100%and an Sp of 35.7%for PD,CT could be avoided in 25.49%of patients.The 21.49%CA19-9 cut-off for PD had an Se of 66.5%,an Sp of 87.4%,an acceptable CUI(Ve-)value of 0.65 and an acceptable FC value of 75.An NLR increase of 11.5%for PD had an Se of 67%and an Sp of 66%;a PLR increase of 5.9%had an Se of 53%and an Sp of 69%;an SII increase above-6.04%had an Se of 72%and an Sp of 63%;and all had acceptable CUI(Ve-)values at 0.55.In the univariate logistic regression analysis,CEA(P<0.001),CA19-9(P<0.05),NLR(P<0.05),PLR(P<0.05)and SII(P<0.05)were important predictors of tumour progression,but in the multivariate logistic regression analysis,CEA was the only independent predictor of PD(P<0.05).CONCLUSION CEA is a useful marker for monitoring the chemotherapy response of patients with unresectable mCRC and could replace a quarter of CT examinations.CA19-9 has poorer diagnostic characteristics than CEA but could be useful in some clinical circumstances,particularly when CEA is not increased.Dynamic changes in the inflammatory indices NLR,PLR and SII could be promising for further investigation as markers of the chemotherapy response.

Significance of serum carcinoembryonic antigen in metastatic breast cancer patients:A prospective study

BACKGROUND Carcinoembryonic antigen(CEA)is an important serum tumour marker with a substantial role in diagnosis and monitoring of various solid tumours.About 36%-70%of breast cancers have elevated serum CEA.And the available studies show discrepancy in addressing the prognostic significance of CEA in advanced breast cancer.AIM To estimate the serum CEA level in our metastatic breast cancer patients and correlate it with response to treatment and clinical outcome.METHODS This was a prospective clinical study conducted on 50 metastatic breast cancer patients treated at breast clinic,with newly diagnosed metastatic breast cancer planned for palliative chemotherapy,targeted therapy,and hormonal treatment.We estimated the proportion of patients with elevated serum CEA level at baseline and after palliative treatment and also studied the association of serum CEA levels with known prognostic factors.The response to treatment was correlated with the serum CEA levels in the context of responders and nonresponders.RESULTS The median pre-treatment and post-treatment CEA levels were 7.9(1.8-40.7)ng/mL and 4.39(1.4-12.15)ng/mL,respectively,in the whole study population(P=0.032).No statistically significant difference was seen in baseline serum CEA between responders and non-responders.Even in the luminal group,pretreatment serum CEA was not a predictor of response,but post-treatment CEA was a significant predictor of tumour progression.In patients with liver and lung metastases,post-treatment CEA level difference was not statistically significant in both responders and non-responders though the values were higher in nonresponders.Among those with bone metastases,69.5%had elevated post-treatment serum CEA,and only 37.5%had elevated serum CEA in those with no bone metastases.CONCLUSION Elevated post-treatment serum CEA levels are associated with disease progression and poor response to therapy.Persistently elevated post-treatment serum CEA levels are significantly associated with bone metastases.Elevated serum CEA and hormonal status are significant predictors of treatment response.

Comparison of seven screening methods in the diagnosis of bladder cancer

Background We compared the validity （evaluated by sensitivity and specificity）, reliability （evaluated by reproducibility） and yield （evaluated by predictive value, examining complexity and cost） of individual and combined tests for bladder tumour antigen stat （BTAstat）, nuclear matrix protein 22 （NMP22）, hyaluronic acid （HA）, survivin, CD44v6, vascular endothelial growth factor （VEGF）, and voided urine cytology （VUC） in detecting bladder cancer. And at the same time we evaluated the clinical value of these seven detecting methods in the diagnosis of bladder cancer. Methods The six markers and VUC were detected in the urine of cancer group （151 patients with bladder cancer） and two control groups （50 patients with benign urological diseases and 50 healthy controls）. The sensitivity, specificity, predictive value, reproducibility, examining complexity and checking cost of each marker and combined markers were calculated. Results There was a significant difference between bladder cancer group and the two control groups. The sensitivity, specificity and positive predictive value were as follows： VUC （36.4%, 100.0%, 100%）, BTAstat （76.8%, 87.0%, 89.9%）, NMP22 （77.5%, 81.0%, 86.0%）, HA （82.8%, 83.0%, 88.0%）, survivin （70.2%, 85.0%, 87.6%）, CD44v6 （50.3%, 79.0%, 78.4%）, and VEGF （68.2%, 93.0%, 93.6%）. The highest sensitivities were 91.4% for NMP22＋BTAstat and HA＋NMP22, whereas the combined marker with the lowest sensitivity （62.3%） was VUC＋CD44v6. The highest specificity was 93.0% for the combined use of VUC＋VEGF and HA＋CD44v6 had the lowest specificity （73.0%）. The most convenient examining method was the detection for BTAstat, the lowest cost was the detection for HA, and the best reproducibility were the detection for BTAstat and VUC. Conclusions All the markers have obvious clinical value in diagnosis of bladder cancer. The use of BTAstat＋HA or NMP22＋BTAstat are better examining methods in terms of validity, reliability, and yield.