AIM To investigate the predictors forrecurrence or metastasis of HCC,and toevaluate the effect of antiangiogenic therapy onthe growth of transplantable human HCC in nudemice.METHODS RT-PCR was used to measure theexpre...AIM To investigate the predictors forrecurrence or metastasis of HCC,and toevaluate the effect of antiangiogenic therapy onthe growth of transplantable human HCC in nudemice.METHODS RT-PCR was used to measure theexpression of matrix metalloproteinase-9(MMP-9)and vascular endothelial growth factor(VEGF)in 56 pairs of nontumorous liver andtumor samples.Sixty blood samples from humanHCC were examined by nested RT-PCR to find outAFP mRNA.Recombinant human endostatin andpolyclonal antibody against VEGF wereadministered to treat human HCC transplanted innude mice.RESULTS Thirty of 56 HCC samples showedstronger expression of MMP-9 in tumoroustissues than in nontumorous tissues.Fifteen ofthe 26 patients with relative expression level ofMMP-9 more than 0.34 developed tumorrecurrence or metastasis,whereas only 7 of 30patients with relative expression level less than0.34 developed tumor recurrence(P【0.05).There was no significant difference in therelative expression level of VEGF betweenpatients with postoperative recurrence ormetastasis and those without recurrence.AFPmRNA was detectable in 53.3% of patients withHCC.The sensitivity and specificity of AFPmRNA as a marker to detect hematogenousdissemination of HCC cells was 81.8% and84.4%,respectively.Recombinant human endostatin and polyclonal antibody against VEGFinhibited the growth of transplantable HCC innude mice by 52.2% and 45.7%,respectively.CONCLUSION MMP-9 expression in HCCcorrelates with the postoperative recurrence ormetastasis of HCC.Patients with high level ofMMP-9 expression in HCC are susceptible tometastasis.AFP mRNA could serve as anindicator of hematogenous spreading of HCCcells in circulation and a predictor of recurrenceor metastasis of HCC.Antiangiogenesis may bean adjuvant therapy for HCC.展开更多
AIM: To reveal the correlation between the functional differentiation phenotypes of gastric carcinoma cells and the invasion and metastasis by a new way of cell-function classification.METHODS:Surgically resected spec...AIM: To reveal the correlation between the functional differentiation phenotypes of gastric carcinoma cells and the invasion and metastasis by a new way of cell-function classification.METHODS:Surgically resected specimens of 361 gastric carcinomas(GC) were investigated with enzyme-, mucin-, and tumor-related marker immunohistochemistry. According to the direction of cell-function differentiation, stomach carcinomas were divided into five functionally differentiated types. RESULTS: (1) Absorptive function differentiation type (AFDT): there were 82 (22.7%) patients including 76 (92.7%) aged 45 years. Sixty-nine (84.1%) cases belonged to the intestinal type. Thirty-eight (46.3%) expressed CD44v6 and 9 (13.6%) of 66 male patients developed liver metastasis.The 5-year survival rate of patients in this group (58.5%) was higher than those with the other types (P【0.01). (2) Mucin secreting function differentiation type (MSFDT): 54 (15%) cases. Fifty-three (98.1%) tumors had penetrated the serosa, 12 (22.2%) expressed ER and 22 (40.7%) expressed CD44v6. The postoperative 5-year survival rate was 28.6%. (3) Absorptive and mucin-producing function differentiation type (AMPFDT): there were 180 (49.9%) cases, including 31 (17.2%) aged younger than 45 years. The tumor was more common in women (62, 34.4%,) and expressed more frequently estrogen receptors (ER) (129, 81.7%) than other types (P【0.01). Ovary metastasis was found in 12 (19.4%) out of 62 female subjects. The patients with this type GC had the lowest 5-year survival rate (24.7%) among all types. (4) Specific function differentiation type (SFDT): 13 (3.6%) cases. Nine (69.2%) tumors of this type derived from APUD system, the other 4 (30.7%) were of different histological differentiation. Sixty per cent of the patients survived at least five years. (5) Non-function differentiation type (NFDT): 32 (8.9%) cases. Nineteen (59.4%) cases had lymph node metastases but no one with liver or ovary metastasis. The 5-year survival rate was 28.1%. CONCLUSION: This new cell-f展开更多
Background Ginsenosides are main components extracted from ginseng, and ginsenoside Rg3 is one of the most important parts. Ginsenoside Rg3 has been found to inhibit several kinds of tumor growth and metastasis. The p...Background Ginsenosides are main components extracted from ginseng, and ginsenoside Rg3 is one of the most important parts. Ginsenoside Rg3 has been found to inhibit several kinds of tumor growth and metastasis. The present study was undertaken to investigate the effect of ginsenoside Rg3 on human ovarian cancer metastasis and the possible mechanism. Methods The experimental lung metastasis models of ovarian cancer SKOV-3 and the assay of tumor-induced angiogenesis were used to observe the inhibitory effects of Rg3 on tumor metastasis and angiogenesis. The effect of Rg3 on invasive ability of SKOV-3 cells in vitro was detected by Boyden chamber, and immunofluorescence staining was used to recognize the expression of matrix metalloproteinase 9 （MMP-9） in SKOV-3 cells. Results In the experimental lung metastasis models of ovarian cancer, the number of tumor colonies in the lung and vessels oriented toward the tumor mass in each ginsenoside Rg3 group, was lower than that of control group. The invasive ability and MMP-9 expression of SKOV-3 cells decreased significantly after treatment with ginsenoside Rg3. Conclusions Ginsenoside Rg3 can significantly inhibit the metastasis of ovarian cancer. The inhibitory effect is partially due to inhibition of tumor-induced an qioqenesis and decrease of invasive ability and MMP-9 expression of SKOV-3 cells.展开更多
Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially...Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially diagnosed or underwent surgical resection,which results in poor prognosis.Both the depth of tumor invasion and lymph node involvement are considered as the most important prognostic predictors of gastric cancer.Although extended lymphadenectomy was not considered a survival benefit procedure and was reported to be associated with high mortality and morbidity in two randomized controlled European trials,it showed significant superiority in terms of lower locoregional recurrence and disease related deaths compared to limited lymphadenectomy in a 15-year followup study.Almost all clinical investigators have reached a consensus that the predictive efficiency of the number of metastatic lymph nodes is far better than the extent of lymph node metastasis for the prognosis of gastric cancer worldwide,but other nodal metastatic classifications of gastric cancer have been proposed as alternatives to the number of metastatic lymph nodes for improving the predictive efficiency for patient prognosis.It is still controversial over whether the ratio between metastatic and examined lymph nodes is superior to the number of metastatic lymph nodes in prognostic evaluation of gastric cancer.Besides,the negative lymph node count has been increasingly recognized to be an important factor significantly associated with prognosis of gastric cancer.展开更多
AIM:To explore risk factors for lymph node metastases in early gastric cancer(EGC) and to confirm the appropriate range of lymph node dissection.METHODS:A total of 202 patients with EGC who underwent curative gastrect...AIM:To explore risk factors for lymph node metastases in early gastric cancer(EGC) and to confirm the appropriate range of lymph node dissection.METHODS:A total of 202 patients with EGC who underwent curative gastrectomy with lymphadenectomy in the Department of Surgery,Xinhua Hospital and Ruijin Hospital of Shanghai Jiaotong University Medical School between November 2003 and July 2009,were retrospectively reviewed.Both the surgical procedure and the extent of lymph node dissection were based on the recommendations of the Japanese gastric cancer treatment guidelines.The macroscopic type was classified as elevated(type Ⅰ or Ⅱa),flat(Ⅱb),or depressed(Ⅱc or Ⅲ).Histopathologically,papillary and tubular adenocarcinomas were grouped together as differentiated adenocarcinomas,and poorly differentiated and signet-ring cell adenocarcinomas were regarded as undifferentiated adenocarcinomas.Univariate and multivariate analyses of lymph node metastases and patient and tumor characteristics were undertaken.RESULTS:The lymph node metastases rate in patients with EGC was 14.4%.Among these,the rate for mucosal cancer was 5.4%,and 8.9% for submucosal cancer.Univariate analysis showed an obvious correlation between lymph node metastases and tumor location,depth of invasion,morphological classification and venous invasion(χ 2 = 122.901,P = 0.001;χ 2 = 7.14,P = 0.008;χ 2 = 79.523,P = 0.001;χ 2 = 8.687,P = 0.003,respectively).In patients with submucosal cancers,the lymph node metastases rate in patients with venous invasion(60%,3/5) was higher than in those without invasion(20%,15/75)(χ 2 = 4.301,P = 0.038).Multivariate logistic regression analysis revealed that the depth of invasion was the only independent risk factor for lymph node metastases in EGC [P = 0.018,Exp(B) = 2.744].Among the patients with lymph node metastases,29 cases(14.4%) were at N1,seven cases were at N2(3.5%),and two cases were at N3(1.0%).Univariate analysis of variance revealed a close relationship between the depth of invasion and lymph node met展开更多
Objective： To validate the necessity of increasing the examined lymph node （ELN） count for enhancing the accuracy of prognostic evaluation of gastric cancer （GC） patients after curative gastrectomy in multiple me...Objective： To validate the necessity of increasing the examined lymph node （ELN） count for enhancing the accuracy of prognostic evaluation of gastric cancer （GC） patients after curative gastrectomy in multiple medical centers of China.Methods： The clinicopathological data of 7,620 patients who underwent the curative resection for GC between 2001 and 2011 were included to demonstrate whether the ELN count is indispensable for enhancing the accuracy of prognostic evaluation of GC patients after surgery. After a meticulous stratification by using the cut-point survival analysis, all included 7,620 patients were allocated into three groups as： less than 16 （〈16）, between 16 and 30 （16-30）, and more than 30 （〉30） ELNs. Survival differences among various subgroups of GC patients were analyzed to assess the impact of the ELN count on the stage migration in accordance with the overall survival （OS） of GC patients.Results： Survival analyses revealed that the ELN count was positively correlated with the OS （P：0.001） and was an independent prognostic predictor （P〈0.01） of 7,620 GC patients. Stratum analysis showed that the accuracy of prognostic evaluation could be enhanced when the ELN count was no less than 16 （≥16） for node-negative patients and 〉30 for node-positive patients. Stage migrations were mainly detected in the various subgroups of patients with specific pN stages as follows： pN0 with 16-30 ELNs （pN016-30） and pN0 with 〉30 ELNs （pN0〉30）, pN0 with 〈16 ELNs （pN0〈16） and pNl〉30, pNl〈l6 and pN216_30, pNl：6_30 and pN2〉30, pN3a〈l6 and pN3b16-30, and pN3a〈16 and pN3 b〉30. These findings indicate that increasing the ELN count is a prerequisite to guarantee precisely prognostic evaluation of GC patients.Conclusions： The ELN count should be proposed to be 〉30 for acquiring the accurate prognostic evaluadort for GC patients, especially for node-positive patients.展开更多
AIM To detect the expression of CD44v6 mRNA and nm23-H1 mRNA in hepatocellular carcinoma (HCC) by in situ hybridization, and to evaluate the relationship between their expression and also relationship between their ex...AIM To detect the expression of CD44v6 mRNA and nm23-H1 mRNA in hepatocellular carcinoma (HCC) by in situ hybridization, and to evaluate the relationship between their expression and also relationship between their expressions and tumor invasion and metastasis.METHODS CD44v6 cDNA probe was synthesized with PCR technique and the nm23-H1 cRNA probe by in vitro transcription. The expression of CD44v6 mRNA and nm23-H1 mRNA was detected by in situ hybridization.RESULTS In group with high invasion and metastasis potential, the positive rates of CD44v6 mRNA and nm23-H1 mRNA were 80% (8/10) and 40% (4/10), in group with poor invasion and metastasis potential, they were 21.7% (5/23) and 91.3% (21/23). There was a positive correlation between the expression of CD44v6 mRNA and tumor invasion and metastasis potential in HCC (P＜0.01), and a reverse correlation between the expression of nm23-H1 mRNA and tumor invasion and metastasis potential (P＜0.01) and a reverse correlation in the expression between CD44v6 mRNA and nm23-H1 mRNA in HCC (P＜0.01).CONCLUSION Detection of CD44v6 mRNA and nm23-H1 mRNA may be useful for tumor invasion and metastasis in HCC.INTRODUCTIONCD44 is a cell surface transmembrane glycoprotein. As a kind of adhesive molecule, it participates in cell-cell and cell-matrix adhesion and interactions. Many studies revealed a correlation between high-level expression of CD44, especially CD44v and tumor invasion, metastasis and prognosis. The exon 6v containing isoforms may be an independent diagnostic parameter[1,2]. Some other studies, however, had different results[3,4]. Some researches showed a reverse correlation between the expression of nm23-H1 mRNA and tumor metastasis[5,6]. In order to evaluate the relationship between the expression of CD44v6 mRNA and nm23-H1 mRNA and tumor invasive and metastatic potential in HCC and to evaluate the relationship in the expression between CD44v6 mRNA and nm23-H1 mRNA, we detected their expression in HCC by in situ hybridization.展开更多
INTRODUCTIONGastric cancer is one of the most common fatal malignancies in the world. The prognosis is generally poor in advanced gastric cancer .The low survival is related to delayed diagnosis, metastasis and recurr...INTRODUCTIONGastric cancer is one of the most common fatal malignancies in the world. The prognosis is generally poor in advanced gastric cancer .The low survival is related to delayed diagnosis, metastasis and recurrence after operation .The aim of this paper was to find correlation between clinical factors was to find correlation between clinical factors and biologic behavior of gastric cancer in a series of 1200 patients undergoing surgical resection.展开更多
INTRODUCTIONCD44 was originally implicated as a'homing'receptor directing the migration of recirculatinglymphocytes.CD44 expression has beenconfirmed not only in lymphocytes but also in awide variety of epithe...INTRODUCTIONCD44 was originally implicated as a'homing'receptor directing the migration of recirculatinglymphocytes.CD44 expression has beenconfirmed not only in lymphocytes but also in awide variety of epithelial tissues.It is considered asan important cell adhesion molecule for cell to cellinteractions.Molecular cloning and analysis展开更多
The principle of surgical treatment for gastric cancer is the radical resectioning although the suitable resecting range for different cases of gastric cancer is still being argued upon[1-9]. However, the diagnostic a...The principle of surgical treatment for gastric cancer is the radical resectioning although the suitable resecting range for different cases of gastric cancer is still being argued upon[1-9]. However, the diagnostic accuracy of early gastric cancer (EGC) without lymphatic metastasis has obviously improved with an improvement in the diagnostic technique and due to the accumulation of knowledge on the biological profiles of EG C[10-17]. The D2 lymph node excision was used as a regular operation to treat the EGC previously. But the concept for the EGC without lymphatic metastasis has gradually changed and the less invasive resections has been applied in some cases[18-20]. This study aimed at investigating the risk factors of lymphatic metastasis in EGC in order to find out the proofs for the suitable indications for less invasive operations such as endoscopic mucosal resectioning (EMR), laparoscopic and laparotomic resectioning.展开更多
文摘AIM To investigate the predictors forrecurrence or metastasis of HCC,and toevaluate the effect of antiangiogenic therapy onthe growth of transplantable human HCC in nudemice.METHODS RT-PCR was used to measure theexpression of matrix metalloproteinase-9(MMP-9)and vascular endothelial growth factor(VEGF)in 56 pairs of nontumorous liver andtumor samples.Sixty blood samples from humanHCC were examined by nested RT-PCR to find outAFP mRNA.Recombinant human endostatin andpolyclonal antibody against VEGF wereadministered to treat human HCC transplanted innude mice.RESULTS Thirty of 56 HCC samples showedstronger expression of MMP-9 in tumoroustissues than in nontumorous tissues.Fifteen ofthe 26 patients with relative expression level ofMMP-9 more than 0.34 developed tumorrecurrence or metastasis,whereas only 7 of 30patients with relative expression level less than0.34 developed tumor recurrence(P【0.05).There was no significant difference in therelative expression level of VEGF betweenpatients with postoperative recurrence ormetastasis and those without recurrence.AFPmRNA was detectable in 53.3% of patients withHCC.The sensitivity and specificity of AFPmRNA as a marker to detect hematogenousdissemination of HCC cells was 81.8% and84.4%,respectively.Recombinant human endostatin and polyclonal antibody against VEGFinhibited the growth of transplantable HCC innude mice by 52.2% and 45.7%,respectively.CONCLUSION MMP-9 expression in HCCcorrelates with the postoperative recurrence ormetastasis of HCC.Patients with high level ofMMP-9 expression in HCC are susceptible tometastasis.AFP mRNA could serve as anindicator of hematogenous spreading of HCCcells in circulation and a predictor of recurrenceor metastasis of HCC.Antiangiogenesis may bean adjuvant therapy for HCC.
基金Project supported by the National Natural Science Foundation of China, No. 39270300. No. 39370772Training Program for Trans-Century Talents by the State Education Commission of China
文摘AIM: To reveal the correlation between the functional differentiation phenotypes of gastric carcinoma cells and the invasion and metastasis by a new way of cell-function classification.METHODS:Surgically resected specimens of 361 gastric carcinomas(GC) were investigated with enzyme-, mucin-, and tumor-related marker immunohistochemistry. According to the direction of cell-function differentiation, stomach carcinomas were divided into five functionally differentiated types. RESULTS: (1) Absorptive function differentiation type (AFDT): there were 82 (22.7%) patients including 76 (92.7%) aged 45 years. Sixty-nine (84.1%) cases belonged to the intestinal type. Thirty-eight (46.3%) expressed CD44v6 and 9 (13.6%) of 66 male patients developed liver metastasis.The 5-year survival rate of patients in this group (58.5%) was higher than those with the other types (P【0.01). (2) Mucin secreting function differentiation type (MSFDT): 54 (15%) cases. Fifty-three (98.1%) tumors had penetrated the serosa, 12 (22.2%) expressed ER and 22 (40.7%) expressed CD44v6. The postoperative 5-year survival rate was 28.6%. (3) Absorptive and mucin-producing function differentiation type (AMPFDT): there were 180 (49.9%) cases, including 31 (17.2%) aged younger than 45 years. The tumor was more common in women (62, 34.4%,) and expressed more frequently estrogen receptors (ER) (129, 81.7%) than other types (P【0.01). Ovary metastasis was found in 12 (19.4%) out of 62 female subjects. The patients with this type GC had the lowest 5-year survival rate (24.7%) among all types. (4) Specific function differentiation type (SFDT): 13 (3.6%) cases. Nine (69.2%) tumors of this type derived from APUD system, the other 4 (30.7%) were of different histological differentiation. Sixty per cent of the patients survived at least five years. (5) Non-function differentiation type (NFDT): 32 (8.9%) cases. Nineteen (59.4%) cases had lymph node metastases but no one with liver or ovary metastasis. The 5-year survival rate was 28.1%. CONCLUSION: This new cell-f
文摘Background Ginsenosides are main components extracted from ginseng, and ginsenoside Rg3 is one of the most important parts. Ginsenoside Rg3 has been found to inhibit several kinds of tumor growth and metastasis. The present study was undertaken to investigate the effect of ginsenoside Rg3 on human ovarian cancer metastasis and the possible mechanism. Methods The experimental lung metastasis models of ovarian cancer SKOV-3 and the assay of tumor-induced angiogenesis were used to observe the inhibitory effects of Rg3 on tumor metastasis and angiogenesis. The effect of Rg3 on invasive ability of SKOV-3 cells in vitro was detected by Boyden chamber, and immunofluorescence staining was used to recognize the expression of matrix metalloproteinase 9 （MMP-9） in SKOV-3 cells. Results In the experimental lung metastasis models of ovarian cancer, the number of tumor colonies in the lung and vessels oriented toward the tumor mass in each ginsenoside Rg3 group, was lower than that of control group. The invasive ability and MMP-9 expression of SKOV-3 cells decreased significantly after treatment with ginsenoside Rg3. Conclusions Ginsenoside Rg3 can significantly inhibit the metastasis of ovarian cancer. The inhibitory effect is partially due to inhibition of tumor-induced an qioqenesis and decrease of invasive ability and MMP-9 expression of SKOV-3 cells.
基金Supported by Anticancer Major Projects of Tianjin Municipal Science and Technology Commission,No.12ZCDZSY16400National Basic Research Program of China(973 Program),No.2010CB529301Science Foundation of Tianjin Medical Univer-sity,No.2012KYM01
文摘Gastric cancer,one of the most common malignancies in the world,frequently reveals lymph node,peritoneum,and liver metastases.Most of gastric cancer patients present with lymph node metastasis when they were initially diagnosed or underwent surgical resection,which results in poor prognosis.Both the depth of tumor invasion and lymph node involvement are considered as the most important prognostic predictors of gastric cancer.Although extended lymphadenectomy was not considered a survival benefit procedure and was reported to be associated with high mortality and morbidity in two randomized controlled European trials,it showed significant superiority in terms of lower locoregional recurrence and disease related deaths compared to limited lymphadenectomy in a 15-year followup study.Almost all clinical investigators have reached a consensus that the predictive efficiency of the number of metastatic lymph nodes is far better than the extent of lymph node metastasis for the prognosis of gastric cancer worldwide,but other nodal metastatic classifications of gastric cancer have been proposed as alternatives to the number of metastatic lymph nodes for improving the predictive efficiency for patient prognosis.It is still controversial over whether the ratio between metastatic and examined lymph nodes is superior to the number of metastatic lymph nodes in prognostic evaluation of gastric cancer.Besides,the negative lymph node count has been increasingly recognized to be an important factor significantly associated with prognosis of gastric cancer.
基金Supported by Shanghai Jiaotong University Medical School for Scientific Research,No.09XJ21013Shanghai Health Bureau for Scientific Research,No.2010029Shanghai Science and Technology Commission for Scientific Research,No.124119a0300
文摘AIM:To explore risk factors for lymph node metastases in early gastric cancer(EGC) and to confirm the appropriate range of lymph node dissection.METHODS:A total of 202 patients with EGC who underwent curative gastrectomy with lymphadenectomy in the Department of Surgery,Xinhua Hospital and Ruijin Hospital of Shanghai Jiaotong University Medical School between November 2003 and July 2009,were retrospectively reviewed.Both the surgical procedure and the extent of lymph node dissection were based on the recommendations of the Japanese gastric cancer treatment guidelines.The macroscopic type was classified as elevated(type Ⅰ or Ⅱa),flat(Ⅱb),or depressed(Ⅱc or Ⅲ).Histopathologically,papillary and tubular adenocarcinomas were grouped together as differentiated adenocarcinomas,and poorly differentiated and signet-ring cell adenocarcinomas were regarded as undifferentiated adenocarcinomas.Univariate and multivariate analyses of lymph node metastases and patient and tumor characteristics were undertaken.RESULTS:The lymph node metastases rate in patients with EGC was 14.4%.Among these,the rate for mucosal cancer was 5.4%,and 8.9% for submucosal cancer.Univariate analysis showed an obvious correlation between lymph node metastases and tumor location,depth of invasion,morphological classification and venous invasion(χ 2 = 122.901,P = 0.001;χ 2 = 7.14,P = 0.008;χ 2 = 79.523,P = 0.001;χ 2 = 8.687,P = 0.003,respectively).In patients with submucosal cancers,the lymph node metastases rate in patients with venous invasion(60%,3/5) was higher than in those without invasion(20%,15/75)(χ 2 = 4.301,P = 0.038).Multivariate logistic regression analysis revealed that the depth of invasion was the only independent risk factor for lymph node metastases in EGC [P = 0.018,Exp(B) = 2.744].Among the patients with lymph node metastases,29 cases(14.4%) were at N1,seven cases were at N2(3.5%),and two cases were at N3(1.0%).Univariate analysis of variance revealed a close relationship between the depth of invasion and lymph node met
基金supported in part by grants from the Programs of National Natural Science Foundation of China(No.81572372,No.81172080,No.81201773,No.81572372)National Key Research and Development Program(MOST-2016YFC1303202)+2 种基金National Precision Medicine Research Program(2017YFC0908300)the Application Foundation and Advanced Technology Program of Tianjin Municipal Science and Technology Commission(15JCYBJC24800)the National Key Clinical Specialist Construction Programs of China(2013-544)
文摘Objective： To validate the necessity of increasing the examined lymph node （ELN） count for enhancing the accuracy of prognostic evaluation of gastric cancer （GC） patients after curative gastrectomy in multiple medical centers of China.Methods： The clinicopathological data of 7,620 patients who underwent the curative resection for GC between 2001 and 2011 were included to demonstrate whether the ELN count is indispensable for enhancing the accuracy of prognostic evaluation of GC patients after surgery. After a meticulous stratification by using the cut-point survival analysis, all included 7,620 patients were allocated into three groups as： less than 16 （〈16）, between 16 and 30 （16-30）, and more than 30 （〉30） ELNs. Survival differences among various subgroups of GC patients were analyzed to assess the impact of the ELN count on the stage migration in accordance with the overall survival （OS） of GC patients.Results： Survival analyses revealed that the ELN count was positively correlated with the OS （P：0.001） and was an independent prognostic predictor （P〈0.01） of 7,620 GC patients. Stratum analysis showed that the accuracy of prognostic evaluation could be enhanced when the ELN count was no less than 16 （≥16） for node-negative patients and 〉30 for node-positive patients. Stage migrations were mainly detected in the various subgroups of patients with specific pN stages as follows： pN0 with 16-30 ELNs （pN016-30） and pN0 with 〉30 ELNs （pN0〉30）, pN0 with 〈16 ELNs （pN0〈16） and pNl〉30, pNl〈l6 and pN216_30, pNl：6_30 and pN2〉30, pN3a〈l6 and pN3b16-30, and pN3a〈16 and pN3 b〉30. These findings indicate that increasing the ELN count is a prerequisite to guarantee precisely prognostic evaluation of GC patients.Conclusions： The ELN count should be proposed to be 〉30 for acquiring the accurate prognostic evaluadort for GC patients, especially for node-positive patients.
文摘AIM To detect the expression of CD44v6 mRNA and nm23-H1 mRNA in hepatocellular carcinoma (HCC) by in situ hybridization, and to evaluate the relationship between their expression and also relationship between their expressions and tumor invasion and metastasis.METHODS CD44v6 cDNA probe was synthesized with PCR technique and the nm23-H1 cRNA probe by in vitro transcription. The expression of CD44v6 mRNA and nm23-H1 mRNA was detected by in situ hybridization.RESULTS In group with high invasion and metastasis potential, the positive rates of CD44v6 mRNA and nm23-H1 mRNA were 80% (8/10) and 40% (4/10), in group with poor invasion and metastasis potential, they were 21.7% (5/23) and 91.3% (21/23). There was a positive correlation between the expression of CD44v6 mRNA and tumor invasion and metastasis potential in HCC (P＜0.01), and a reverse correlation between the expression of nm23-H1 mRNA and tumor invasion and metastasis potential (P＜0.01) and a reverse correlation in the expression between CD44v6 mRNA and nm23-H1 mRNA in HCC (P＜0.01).CONCLUSION Detection of CD44v6 mRNA and nm23-H1 mRNA may be useful for tumor invasion and metastasis in HCC.INTRODUCTIONCD44 is a cell surface transmembrane glycoprotein. As a kind of adhesive molecule, it participates in cell-cell and cell-matrix adhesion and interactions. Many studies revealed a correlation between high-level expression of CD44, especially CD44v and tumor invasion, metastasis and prognosis. The exon 6v containing isoforms may be an independent diagnostic parameter[1,2]. Some other studies, however, had different results[3,4]. Some researches showed a reverse correlation between the expression of nm23-H1 mRNA and tumor metastasis[5,6]. In order to evaluate the relationship between the expression of CD44v6 mRNA and nm23-H1 mRNA and tumor invasive and metastatic potential in HCC and to evaluate the relationship in the expression between CD44v6 mRNA and nm23-H1 mRNA, we detected their expression in HCC by in situ hybridization.
文摘INTRODUCTIONGastric cancer is one of the most common fatal malignancies in the world. The prognosis is generally poor in advanced gastric cancer .The low survival is related to delayed diagnosis, metastasis and recurrence after operation .The aim of this paper was to find correlation between clinical factors was to find correlation between clinical factors and biologic behavior of gastric cancer in a series of 1200 patients undergoing surgical resection.
基金the Science and Technology Commission of Jiangsu Province,No.98052.
文摘INTRODUCTIONCD44 was originally implicated as a'homing'receptor directing the migration of recirculatinglymphocytes.CD44 expression has beenconfirmed not only in lymphocytes but also in awide variety of epithelial tissues.It is considered asan important cell adhesion molecule for cell to cellinteractions.Molecular cloning and analysis
基金Scientific Research Foundation for Returned Overseas Chinese Scholars,Slate Education Commission(1997-832)
文摘The principle of surgical treatment for gastric cancer is the radical resectioning although the suitable resecting range for different cases of gastric cancer is still being argued upon[1-9]. However, the diagnostic accuracy of early gastric cancer (EGC) without lymphatic metastasis has obviously improved with an improvement in the diagnostic technique and due to the accumulation of knowledge on the biological profiles of EG C[10-17]. The D2 lymph node excision was used as a regular operation to treat the EGC previously. But the concept for the EGC without lymphatic metastasis has gradually changed and the less invasive resections has been applied in some cases[18-20]. This study aimed at investigating the risk factors of lymphatic metastasis in EGC in order to find out the proofs for the suitable indications for less invasive operations such as endoscopic mucosal resectioning (EMR), laparoscopic and laparotomic resectioning.
