Two control systems (PES) are used to complete the CRCS control system for the catalyst circulation regeneration of the continuous reforming unit in a plant, one is to control PES (AB rslogix 5) and the other is to pr...Two control systems (PES) are used to complete the CRCS control system for the catalyst circulation regeneration of the continuous reforming unit in a plant, one is to control PES (AB rslogix 5) and the other is to protect PES (triocn TMR V9). The protection PES is mainly used to complete the safety interlock control and start stop sequence control for the cold and hot shutdown of the regeneration unit, as well as the control of heater and solenoid valve. The control part includes the linear rate of spent product lifting, the sequence control of catalyst lock hopper and the circulation alarm control part. Due to the aging of the control system (which has been running continuously for more than 10 years), no spare parts are available. Due to the technical limitations at that time, the original control system structure was scattered, the system interface was complex, and the communication technology was lagging behind. The program management of the original process package is relatively closed (black box), and it is almost impossible to check the fault. The technical service of the original manufacturer lags behind, and the system has potential safety hazards, so the normal maintenance is difficult, so the old system is transformed.展开更多
Dear Editor,Psoriasis is increasingly recognized as a systemic inflammatory disease associated with several comorbidities,including metabolic syndrome,depression,and malignancies[1].Colorectal cancer(CRC)is the third ...Dear Editor,Psoriasis is increasingly recognized as a systemic inflammatory disease associated with several comorbidities,including metabolic syndrome,depression,and malignancies[1].Colorectal cancer(CRC)is the third most common cancer worldwide and ranks second in mortality among all malignancies.Currently,it has become one of the most severe challenges faced by healthcare systems in many countries[2].A previous study has found that patients with psoriasis have a significantly increased risk of developing CRC[3].展开更多
Colorectal cancer(CRC)is the third most common malignancy worldwide and the second leading cause of cancer-related deaths,accounting for approximately 10%of all cancer cases.By 2050,CRC incidence is expected to rise s...Colorectal cancer(CRC)is the third most common malignancy worldwide and the second leading cause of cancer-related deaths,accounting for approximately 10%of all cancer cases.By 2050,CRC incidence is expected to rise substantially,driven by population aging and greater exposure to risk factors in developing countries.Despite advances in medicine and pharmacy,the effectiveness of available treatments remains limited,underscoring the urgent need for innovative therapeutic strategies.This review summarizes and critically evaluates currently available CRC therapies and explores new emerging directions.Particular attention is given to the role of immunotherapy,targeted therapies,nanotechnology-based approaches,metal-based compounds,PROTAC technology,and personalized medicine,with emphasis on their efficacy,safety,accessibility,and mechanisms of drug resistance.In conclusion,surgery and chemotherapy remain the backbone of CRC treatment,but novel therapeutic approaches are reshaping the treatment landscape.Emerging strategies may offer improved patient tolerability and survival outcomes by reducing the occurrence of burdensome adverse effects.Persistent challenges such as drug toxicity,the emergence of resistance mechanisms,and inequalities in access to innovative therapies underscore the need for further translational research.Integrating personalized therapeutic approaches will also be crucial to achieving more effective,safer,and accessible treatment strategies for CRC.展开更多
Objectives:The mechanism by which specific tumor subsets in colorectal cancer(CRC)use alternative metabolic pathways,particularly those modulated by hypoxia and fructose,to alter the tumor microenvironment(TME)remains...Objectives:The mechanism by which specific tumor subsets in colorectal cancer(CRC)use alternative metabolic pathways,particularly those modulated by hypoxia and fructose,to alter the tumor microenvironment(TME)remains unclear.This study aimed to identify these malignant subpopulations and characterize their intercellular signaling networks and spatial organization through an integrative multi-omics approach.Methods:Leveraging bulk datasets,single-cell RNA sequencing,and integrative spatial transcriptomics,we developed a prognostic model based on hypoxia-and fructose metabolism-related genes(HFGs)to delineate tumor cell subpopulations and their intercellular signaling networks.Results:We identified a specific subset of stanniocalcin-2 positive(STC2+)malignant cells spatially enriched within tumor regions and strongly associated with poor prognosis.This subset served as a key signaling hub in the TME,exhibiting increased epithelial–mesenchymal transition activity.STC2+cells engage in two spatially organized ligand–receptor interactions:the growth differentiation factor 15(GDF15)—transforming growth factor beta receptor 2(TGFBR2)pathway targeting endothelial cells and the migration inhibitory factor(MIF)—(cluster of differentiation 74[CD74]+C-X-C motif chemokine receptor 4[CXCR4])pathway targeting macrophages.Conclusion:This study identified a malignant cell state in CRC that is metabolically defined and spatially limited,including liver metastases,and is characterized by elevated STC2 expression and active immune-stromal interactions.Given the interplay between metabolic reprogramming and TME remodeling,STC2+malignant cells are a functionally significant subpopulation and a potential therapeutic target.展开更多
Objectives:Cancer treatment relies heavily on accurate diagnosis and effective monitoring of the disease.These processes often involve invasive procedures,such as colonoscopy,to detect malignant tissues,followed by mo...Objectives:Cancer treatment relies heavily on accurate diagnosis and effective monitoring of the disease.These processes often involve invasive procedures,such as colonoscopy,to detect malignant tissues,followed by molecular analyses to determine relevant biomarkers.This study aimed to evaluate the clinical performance of droplet digital PCR(ddPCR)for detecting Kirsten Rat Sarcoma Viral Proto-Oncogene(KRAS),Neuroblastoma RAS Viral Oncogene Homolog(NRAS),and B-Raf Murine Sarcoma Viral Oncogene Homolog B(BRAF)mutations in circulating tumor DNA(ctDNA)from colorectal cancer patients using liquid biopsy.Methods:ctDNA was isolated from colorectal cancer(CRC)patients(n=110)and analyzed for KRAS,BRAF,and NRAS mutations.The ctDNA obtained through liquid biopsy was analyzed using ddPCR,and the findings were compared with sequencing data from tumor DNA archived in formalin-fixed paraffin-embedded(FFPE)blocks.Results:For KRAS mutations,ddPCR achieved a sensitivity of 72.0%and a specificity of 71.4%.However,when pooling all target mutations(KRAS,NRAS and BRAF),the overall sensitivity and specificity were lower,at 48.3%and 51.1%,respectively.Conclusion:The results of this study indicate that the ddPCR analysis of ctDNA may provide complementary information for the molecular diagnosis of CRC patients.展开更多
The metastatic pattern of colon cancer is typically well characterized,with initial dissemination occurring through regional lymphatics,followed by hematogenous spread.The most frequent sites of metastasis in colorect...The metastatic pattern of colon cancer is typically well characterized,with initial dissemination occurring through regional lymphatics,followed by hematogenous spread.The most frequent sites of metastasis in colorectal cancer(CRC)include regional lymph nodes(50%–70%),liver(35%–50%),lungs(21%),peritoneum(15%),and ovaries(13%).1 Isolated distant lymph node metastasis,particularly in the absence of concurrent systemic disease,is exceedingly rare in CRC.To date,only six cases of isolated axillary lymph node metastasis(ALNM)from colorectal primaries have been documented in the literature.1–6 Even more uncommon is the incidental discovery of malignant cells in anastomotic doughnuts following stoma reversal procedures.Herein,we report a rare case involving both the incidental histopathological detection of tumor cells within doughnuts during stoma closure and the subsequent development of isolated ALNM after curative resection of sigmoid colon carcinoma.展开更多
文摘Two control systems (PES) are used to complete the CRCS control system for the catalyst circulation regeneration of the continuous reforming unit in a plant, one is to control PES (AB rslogix 5) and the other is to protect PES (triocn TMR V9). The protection PES is mainly used to complete the safety interlock control and start stop sequence control for the cold and hot shutdown of the regeneration unit, as well as the control of heater and solenoid valve. The control part includes the linear rate of spent product lifting, the sequence control of catalyst lock hopper and the circulation alarm control part. Due to the aging of the control system (which has been running continuously for more than 10 years), no spare parts are available. Due to the technical limitations at that time, the original control system structure was scattered, the system interface was complex, and the communication technology was lagging behind. The program management of the original process package is relatively closed (black box), and it is almost impossible to check the fault. The technical service of the original manufacturer lags behind, and the system has potential safety hazards, so the normal maintenance is difficult, so the old system is transformed.
基金supported by the National Natural Science Foundation of China(Grant No.82373475).
文摘Dear Editor,Psoriasis is increasingly recognized as a systemic inflammatory disease associated with several comorbidities,including metabolic syndrome,depression,and malignancies[1].Colorectal cancer(CRC)is the third most common cancer worldwide and ranks second in mortality among all malignancies.Currently,it has become one of the most severe challenges faced by healthcare systems in many countries[2].A previous study has found that patients with psoriasis have a significantly increased risk of developing CRC[3].
文摘Colorectal cancer(CRC)is the third most common malignancy worldwide and the second leading cause of cancer-related deaths,accounting for approximately 10%of all cancer cases.By 2050,CRC incidence is expected to rise substantially,driven by population aging and greater exposure to risk factors in developing countries.Despite advances in medicine and pharmacy,the effectiveness of available treatments remains limited,underscoring the urgent need for innovative therapeutic strategies.This review summarizes and critically evaluates currently available CRC therapies and explores new emerging directions.Particular attention is given to the role of immunotherapy,targeted therapies,nanotechnology-based approaches,metal-based compounds,PROTAC technology,and personalized medicine,with emphasis on their efficacy,safety,accessibility,and mechanisms of drug resistance.In conclusion,surgery and chemotherapy remain the backbone of CRC treatment,but novel therapeutic approaches are reshaping the treatment landscape.Emerging strategies may offer improved patient tolerability and survival outcomes by reducing the occurrence of burdensome adverse effects.Persistent challenges such as drug toxicity,the emergence of resistance mechanisms,and inequalities in access to innovative therapies underscore the need for further translational research.Integrating personalized therapeutic approaches will also be crucial to achieving more effective,safer,and accessible treatment strategies for CRC.
基金supported by the Joint Project of the Chongqing Science and Technology Commission(2025MSXM040).
文摘Objectives:The mechanism by which specific tumor subsets in colorectal cancer(CRC)use alternative metabolic pathways,particularly those modulated by hypoxia and fructose,to alter the tumor microenvironment(TME)remains unclear.This study aimed to identify these malignant subpopulations and characterize their intercellular signaling networks and spatial organization through an integrative multi-omics approach.Methods:Leveraging bulk datasets,single-cell RNA sequencing,and integrative spatial transcriptomics,we developed a prognostic model based on hypoxia-and fructose metabolism-related genes(HFGs)to delineate tumor cell subpopulations and their intercellular signaling networks.Results:We identified a specific subset of stanniocalcin-2 positive(STC2+)malignant cells spatially enriched within tumor regions and strongly associated with poor prognosis.This subset served as a key signaling hub in the TME,exhibiting increased epithelial–mesenchymal transition activity.STC2+cells engage in two spatially organized ligand–receptor interactions:the growth differentiation factor 15(GDF15)—transforming growth factor beta receptor 2(TGFBR2)pathway targeting endothelial cells and the migration inhibitory factor(MIF)—(cluster of differentiation 74[CD74]+C-X-C motif chemokine receptor 4[CXCR4])pathway targeting macrophages.Conclusion:This study identified a malignant cell state in CRC that is metabolically defined and spatially limited,including liver metastases,and is characterized by elevated STC2 expression and active immune-stromal interactions.Given the interplay between metabolic reprogramming and TME remodeling,STC2+malignant cells are a functionally significant subpopulation and a potential therapeutic target.
基金funded by the Ministry of Health of the Czech Republic—conceptual development of research organization(MMCI,00209805)Czech Science Foundation(No.25-15990S)+1 种基金the project 7D241003 EUREKA EUROSTARS35897,project SALVAGE(P JAC,reg.No.CZ.02.01.01/00/22_008/0004644)—funded by the European Unionby the State Budget of the Czech Republic,and by the LRI project BBMRI.cz(Nos.LM2023033 and CZ.02.1.01/0.0/0.0/16_013/0001674.).
文摘Objectives:Cancer treatment relies heavily on accurate diagnosis and effective monitoring of the disease.These processes often involve invasive procedures,such as colonoscopy,to detect malignant tissues,followed by molecular analyses to determine relevant biomarkers.This study aimed to evaluate the clinical performance of droplet digital PCR(ddPCR)for detecting Kirsten Rat Sarcoma Viral Proto-Oncogene(KRAS),Neuroblastoma RAS Viral Oncogene Homolog(NRAS),and B-Raf Murine Sarcoma Viral Oncogene Homolog B(BRAF)mutations in circulating tumor DNA(ctDNA)from colorectal cancer patients using liquid biopsy.Methods:ctDNA was isolated from colorectal cancer(CRC)patients(n=110)and analyzed for KRAS,BRAF,and NRAS mutations.The ctDNA obtained through liquid biopsy was analyzed using ddPCR,and the findings were compared with sequencing data from tumor DNA archived in formalin-fixed paraffin-embedded(FFPE)blocks.Results:For KRAS mutations,ddPCR achieved a sensitivity of 72.0%and a specificity of 71.4%.However,when pooling all target mutations(KRAS,NRAS and BRAF),the overall sensitivity and specificity were lower,at 48.3%and 51.1%,respectively.Conclusion:The results of this study indicate that the ddPCR analysis of ctDNA may provide complementary information for the molecular diagnosis of CRC patients.
文摘The metastatic pattern of colon cancer is typically well characterized,with initial dissemination occurring through regional lymphatics,followed by hematogenous spread.The most frequent sites of metastasis in colorectal cancer(CRC)include regional lymph nodes(50%–70%),liver(35%–50%),lungs(21%),peritoneum(15%),and ovaries(13%).1 Isolated distant lymph node metastasis,particularly in the absence of concurrent systemic disease,is exceedingly rare in CRC.To date,only six cases of isolated axillary lymph node metastasis(ALNM)from colorectal primaries have been documented in the literature.1–6 Even more uncommon is the incidental discovery of malignant cells in anastomotic doughnuts following stoma reversal procedures.Herein,we report a rare case involving both the incidental histopathological detection of tumor cells within doughnuts during stoma closure and the subsequent development of isolated ALNM after curative resection of sigmoid colon carcinoma.
