慢性乙型肝炎病毒感染(chronic hepatitis B infection,CHB)诱导肝细胞的染色体超倍化(包括非整倍化和多倍化)及染色体不稳定性,是导致原发性肝细胞癌(primary hepatocytic carcinoma,HCC)发生的主要原因之一.尽管肝细胞对于正常条件下...慢性乙型肝炎病毒感染(chronic hepatitis B infection,CHB)诱导肝细胞的染色体超倍化(包括非整倍化和多倍化)及染色体不稳定性,是导致原发性肝细胞癌(primary hepatocytic carcinoma,HCC)发生的主要原因之一.尽管肝细胞对于正常条件下染色体复制的多倍体化具有调节作用,但对于CHB引起的超倍化难以调节从而致癌.研究表明,乙型肝炎病毒(hepatitis B virus,HBV)使得多条信号途径如PLK1/PRC1失调,诱导肝细胞染色体超倍化并发生恶性转化.本论文综述了HBV感染诱导肝细胞染色体超倍化导致肝癌发生的机制以及靶向染色体超倍化药物研究的最新进展.展开更多
BACKGROUND Commonly used glucocorticoids replacement regimens in patients with hypopituitarism have difficulty mimicking physiological cortisol rhythms and are usually accompanied by risks of over-treatment,with adver...BACKGROUND Commonly used glucocorticoids replacement regimens in patients with hypopituitarism have difficulty mimicking physiological cortisol rhythms and are usually accompanied by risks of over-treatment,with adverse effects on glucose metabolism.Disorders associated with glucose metabolism are established risk factors of cardiovascular events,one of the life-threatening ramifications.AIM To investigate the glycometabolism profile in patients with hypopituitarism receiving prednisone(Pred)replacement,and to clarify the impacts of different Pred doses on glycometabolism and consequent adverse cardiovascular outcomes.METHODS Twenty patients with hypopituitarism receiving Pred replacement[patient group(PG)]and 20 normal controls(NCs)were recruited.A flash glucose monitoring system was used to record continuous glucose levels during the day,which provided information on glucose-target-rate,glucose variability(GV),period glucose level,and hypoglycemia occurrence at certain periods.Islet β-cell function was also assessed.Based on the administered Pred dose per day,the PG was then regrouped into Pred>5 mg/d and Pred≤5 mg/d subgroups.Comparative analysis was carried out between the PG and NCs.RESULTS Significantly altered glucose metabolism profiles were identified in the PG.This includes significant reductions in glucose-target-rate and nocturnal glucose level,along with elevations in GV,hypoglycemia occurrence and postprandial glucose level,when compared with those in NCs.Subgroup analysis indicated more significant glucose metabolism impairment in the Pred>5 mg/d group,including significantly decreased glucose-target-rate and nocturnal glucose level,along with increased GV,hypoglycemia occurrence,and postprandial glucose level.With regard to islet β-cell function,PG showed significant difference in homeostasis model assessment(HOMA)-β compared with that of NCs;a notable difference in HOMA-βwas identified in Pred>5 mg/d group when compared with those of NCs;as for Pred≤5 mg/d group,significant differences were found in HOMA-β,and fasting glucose/insulin ratio when compared with NCs.CONCLUSION Our results demonstrated that Pred replacement disrupted glycometabolic homeostasis in patients with hypopituitarism.A Pred dose of>5 mg/d seemed to cause more adverse effects on glycometabolism than a dose of≤5 mg/d.Comprehensive and accurate evaluation is necessary to consider a suitable Pred replacement regimen,wherein,flash glucose monitoring system is a kind of promising and reliable assessment device.The present data allows us to thoroughly examine our modern treatment standards,especially in difficult cases such as hormonal replacement mimicking delicate natural cycles,in conditions such as diabetes mellitus that are rapidly growing in worldwide prevalence.展开更多
BACKGROUND The corona virus disease 2019(COVID-19)has been a pandemic for more than one year and estimated to affect the whole world in the near future.CASE SUMMARY Here we reported that one COVID-19 patient with vesi...BACKGROUND The corona virus disease 2019(COVID-19)has been a pandemic for more than one year and estimated to affect the whole world in the near future.CASE SUMMARY Here we reported that one COVID-19 patient with vesicles was treated by bullectomy.The patient’s perioperative laboratory tests were analyzed.The pathological findings of bullectomy were described and compared with those of common bulla cases.CONCLUSION This patient with vesicles underwent bullectomy and had a poor prognosis.He showed diffuse alveolar damage and extensive necrosis in bullectomy specimen.We hope our report will be of interest for clinicians who will treat COVID-19 patients in the future.展开更多
Objective Lindqvist-type polyoxometalates(POMs)exhibit potential antitumor activities.This study aimed to examine the effects of Lindqvist-type POMs against breast cancer and the underlying mechanism.Methods Using dif...Objective Lindqvist-type polyoxometalates(POMs)exhibit potential antitumor activities.This study aimed to examine the effects of Lindqvist-type POMs against breast cancer and the underlying mechanism.Methods Using different cancer cell lines,the present study evaluated the antitumor activities of POM analogues that were modified at the body skeleton based on molybdenum-vanadium-centered negative oxygen ion polycondensations with different side strains.Cell colony formation assay,autophagy detection,mitochondrial observation,qRT-PCR,Western blotting,and animal model were used to evaluate the antitumor activities of POMs against breast cancer cells and the related mechanism.Results MO-4,a Lindqvist-type POM linking a proline at its side strain,was selected for subsequent experiments due to its low half maximal inhibitory concentration in the inhibition of proliferation of breast cancer cells.It was found that MO-4 induced the apoptosis of multiple types of breast cancer cells.Mechanistically,MO-4 activated intracellular mitophagy by elevating mitochondrial reactive oxygen species(ROS)levels and resulting in apoptosis.In vivo,breast tumor growth and distant metastasis were significantly reduced following MO-4 treatment.Conclusion Collectively,the results of the present study demonstrated that the novel Lindqvist-type POM MO-4 may exhibit potential in the treatment of breast cancer.展开更多
The weldabiUty of some material is analyzed with simple calculating program in this paper, and weldability testing data are shared through database system. The welding procedures are designed with help of expert syste...The weldabiUty of some material is analyzed with simple calculating program in this paper, and weldability testing data are shared through database system. The welding procedures are designed with help of expert systems, and the knowledge is shared among welding engineers. Not only the preparing progress of the welding documents is completed with database systems but also the complex decision on the necessity of the qualification test according to the present procedure qualification records （PQRs） and manufacture codes is made. Moreover, the artificial neural network （ANN） technique is proven to be one of the effective ways to predict mechanical properties of welded joints when there are enough tested data to train the models. Finally, the achievements in modeling microstructure of welded joints are introduced, especially in solid transformation and grain growth in both heat-affected zone （HAZ） and welded molten pool.展开更多
文摘慢性乙型肝炎病毒感染(chronic hepatitis B infection,CHB)诱导肝细胞的染色体超倍化(包括非整倍化和多倍化)及染色体不稳定性,是导致原发性肝细胞癌(primary hepatocytic carcinoma,HCC)发生的主要原因之一.尽管肝细胞对于正常条件下染色体复制的多倍体化具有调节作用,但对于CHB引起的超倍化难以调节从而致癌.研究表明,乙型肝炎病毒(hepatitis B virus,HBV)使得多条信号途径如PLK1/PRC1失调,诱导肝细胞染色体超倍化并发生恶性转化.本论文综述了HBV感染诱导肝细胞染色体超倍化导致肝癌发生的机制以及靶向染色体超倍化药物研究的最新进展.
基金Supported by National Natural Science Foundation of China,No.81770776,No.81973378,and No.82073909The Shanxi Provincial Central Leading Local Science and Technology Development Fund Project,No.YDZJSX2022A059Postgraduate Education Innovation Project of Shanxi Province,No.2022Y354.
文摘BACKGROUND Commonly used glucocorticoids replacement regimens in patients with hypopituitarism have difficulty mimicking physiological cortisol rhythms and are usually accompanied by risks of over-treatment,with adverse effects on glucose metabolism.Disorders associated with glucose metabolism are established risk factors of cardiovascular events,one of the life-threatening ramifications.AIM To investigate the glycometabolism profile in patients with hypopituitarism receiving prednisone(Pred)replacement,and to clarify the impacts of different Pred doses on glycometabolism and consequent adverse cardiovascular outcomes.METHODS Twenty patients with hypopituitarism receiving Pred replacement[patient group(PG)]and 20 normal controls(NCs)were recruited.A flash glucose monitoring system was used to record continuous glucose levels during the day,which provided information on glucose-target-rate,glucose variability(GV),period glucose level,and hypoglycemia occurrence at certain periods.Islet β-cell function was also assessed.Based on the administered Pred dose per day,the PG was then regrouped into Pred>5 mg/d and Pred≤5 mg/d subgroups.Comparative analysis was carried out between the PG and NCs.RESULTS Significantly altered glucose metabolism profiles were identified in the PG.This includes significant reductions in glucose-target-rate and nocturnal glucose level,along with elevations in GV,hypoglycemia occurrence and postprandial glucose level,when compared with those in NCs.Subgroup analysis indicated more significant glucose metabolism impairment in the Pred>5 mg/d group,including significantly decreased glucose-target-rate and nocturnal glucose level,along with increased GV,hypoglycemia occurrence,and postprandial glucose level.With regard to islet β-cell function,PG showed significant difference in homeostasis model assessment(HOMA)-β compared with that of NCs;a notable difference in HOMA-βwas identified in Pred>5 mg/d group when compared with those of NCs;as for Pred≤5 mg/d group,significant differences were found in HOMA-β,and fasting glucose/insulin ratio when compared with NCs.CONCLUSION Our results demonstrated that Pred replacement disrupted glycometabolic homeostasis in patients with hypopituitarism.A Pred dose of>5 mg/d seemed to cause more adverse effects on glycometabolism than a dose of≤5 mg/d.Comprehensive and accurate evaluation is necessary to consider a suitable Pred replacement regimen,wherein,flash glucose monitoring system is a kind of promising and reliable assessment device.The present data allows us to thoroughly examine our modern treatment standards,especially in difficult cases such as hormonal replacement mimicking delicate natural cycles,in conditions such as diabetes mellitus that are rapidly growing in worldwide prevalence.
文摘BACKGROUND The corona virus disease 2019(COVID-19)has been a pandemic for more than one year and estimated to affect the whole world in the near future.CASE SUMMARY Here we reported that one COVID-19 patient with vesicles was treated by bullectomy.The patient’s perioperative laboratory tests were analyzed.The pathological findings of bullectomy were described and compared with those of common bulla cases.CONCLUSION This patient with vesicles underwent bullectomy and had a poor prognosis.He showed diffuse alveolar damage and extensive necrosis in bullectomy specimen.We hope our report will be of interest for clinicians who will treat COVID-19 patients in the future.
基金supported by Open Project Funding of the Key Laboratory of Fermentation Engineering(Ministry of Education)(No.202209EF09)the Natural Science Foundation of Hubei Province(No.2021CFB289)+1 种基金the Key R&D Project of Hubei Province(No.2022BCA018)the initial funding of Hubei University of Technology(No.XJ2022002201).
文摘Objective Lindqvist-type polyoxometalates(POMs)exhibit potential antitumor activities.This study aimed to examine the effects of Lindqvist-type POMs against breast cancer and the underlying mechanism.Methods Using different cancer cell lines,the present study evaluated the antitumor activities of POM analogues that were modified at the body skeleton based on molybdenum-vanadium-centered negative oxygen ion polycondensations with different side strains.Cell colony formation assay,autophagy detection,mitochondrial observation,qRT-PCR,Western blotting,and animal model were used to evaluate the antitumor activities of POMs against breast cancer cells and the related mechanism.Results MO-4,a Lindqvist-type POM linking a proline at its side strain,was selected for subsequent experiments due to its low half maximal inhibitory concentration in the inhibition of proliferation of breast cancer cells.It was found that MO-4 induced the apoptosis of multiple types of breast cancer cells.Mechanistically,MO-4 activated intracellular mitophagy by elevating mitochondrial reactive oxygen species(ROS)levels and resulting in apoptosis.In vivo,breast tumor growth and distant metastasis were significantly reduced following MO-4 treatment.Conclusion Collectively,the results of the present study demonstrated that the novel Lindqvist-type POM MO-4 may exhibit potential in the treatment of breast cancer.
基金Acknowledgements Financial support by the National Natural Science Foundation of China under Grant No. 50775112 is gratefully acknowledged.
文摘The weldabiUty of some material is analyzed with simple calculating program in this paper, and weldability testing data are shared through database system. The welding procedures are designed with help of expert systems, and the knowledge is shared among welding engineers. Not only the preparing progress of the welding documents is completed with database systems but also the complex decision on the necessity of the qualification test according to the present procedure qualification records （PQRs） and manufacture codes is made. Moreover, the artificial neural network （ANN） technique is proven to be one of the effective ways to predict mechanical properties of welded joints when there are enough tested data to train the models. Finally, the achievements in modeling microstructure of welded joints are introduced, especially in solid transformation and grain growth in both heat-affected zone （HAZ） and welded molten pool.
