Gut microbiota exerts a significant role in the pathogenesis of the metabolic syndrome,as confirmed by studies conducted both on humans and animal models.Gut microbial composition and functions are strongly influenced...Gut microbiota exerts a significant role in the pathogenesis of the metabolic syndrome,as confirmed by studies conducted both on humans and animal models.Gut microbial composition and functions are strongly influenced by diet.This complex intestinal"superorganism"seems to affect host metabolic balance modulating energy absorption,gut motility,appetite,glucose and lipid metabolism,as well as hepatic fatty storage.An impairment of the fine balance between gut microbes and host’s immune system could culminate in the intestinal translocation of bacterial fragments and the development of"metabolic endotoxemia",leading to systemic inflammation and insulin resistance.Diet induced weight-loss and bariatric surgery promote significant changes of gut microbial composition,that seem to affect the success,or the inefficacy,of treatment strategies.Manipulation of gut microbiota through the administration of prebiotics or probiotics could reduce intestinal low grade inflammation and improve gut barrier integrity,thus,ameliorating metabolic balance and promoting weight loss.However,further evidence is needed to better understand their clinical impact and therapeutic use.展开更多
The recurrence of hepatocellular carcinoma,the sixth most common neoplasm and the third leading cause of cancer-related mortality worldwide,represents an important clinical problem,since it may occur after both surgic...The recurrence of hepatocellular carcinoma,the sixth most common neoplasm and the third leading cause of cancer-related mortality worldwide,represents an important clinical problem,since it may occur after both surgical and medical treatment.The recurrence rate involves 2 phases:an early phase and a late phase.The early phase usually occurs within 2 years after resection;it is mainly related to local invasion and intrahepatic metastases and,therefore,to the intrinsic biology of the tumor.On the other hand,the late phase occurs more than 2 years after surgery and is mainly related to de novo tumor formation as a consequence of the carcinogenic cirrhotic environment.Since recent studies have reported that early and late recurrences may have different risk factors,it is clinically important to recognize these factors in the individual patient as soon as possible.The aim of this review was,therefore,to identify predicting factors for the recurrence of hepatocellularcarcinoma,by means of invasive and non-invasive methods,according to the different therapeutic strategies available.In particular the role of emerging techniques(e.g.,transient elastography)and biological features of hepatocellular carcinoma in predicting recurrence have been discussed.In particular,invasive methods were differentiated from non-invasive ones for research purposes,taking into consideration the emerging role of the genetic signature of hepatocellular carcinoma in order to better allocate treatment strategies and surveillance follow-up in patients with this type of tumor.展开更多
文摘Gut microbiota exerts a significant role in the pathogenesis of the metabolic syndrome,as confirmed by studies conducted both on humans and animal models.Gut microbial composition and functions are strongly influenced by diet.This complex intestinal"superorganism"seems to affect host metabolic balance modulating energy absorption,gut motility,appetite,glucose and lipid metabolism,as well as hepatic fatty storage.An impairment of the fine balance between gut microbes and host’s immune system could culminate in the intestinal translocation of bacterial fragments and the development of"metabolic endotoxemia",leading to systemic inflammation and insulin resistance.Diet induced weight-loss and bariatric surgery promote significant changes of gut microbial composition,that seem to affect the success,or the inefficacy,of treatment strategies.Manipulation of gut microbiota through the administration of prebiotics or probiotics could reduce intestinal low grade inflammation and improve gut barrier integrity,thus,ameliorating metabolic balance and promoting weight loss.However,further evidence is needed to better understand their clinical impact and therapeutic use.
文摘The recurrence of hepatocellular carcinoma,the sixth most common neoplasm and the third leading cause of cancer-related mortality worldwide,represents an important clinical problem,since it may occur after both surgical and medical treatment.The recurrence rate involves 2 phases:an early phase and a late phase.The early phase usually occurs within 2 years after resection;it is mainly related to local invasion and intrahepatic metastases and,therefore,to the intrinsic biology of the tumor.On the other hand,the late phase occurs more than 2 years after surgery and is mainly related to de novo tumor formation as a consequence of the carcinogenic cirrhotic environment.Since recent studies have reported that early and late recurrences may have different risk factors,it is clinically important to recognize these factors in the individual patient as soon as possible.The aim of this review was,therefore,to identify predicting factors for the recurrence of hepatocellularcarcinoma,by means of invasive and non-invasive methods,according to the different therapeutic strategies available.In particular the role of emerging techniques(e.g.,transient elastography)and biological features of hepatocellular carcinoma in predicting recurrence have been discussed.In particular,invasive methods were differentiated from non-invasive ones for research purposes,taking into consideration the emerging role of the genetic signature of hepatocellular carcinoma in order to better allocate treatment strategies and surveillance follow-up in patients with this type of tumor.
