Objective To establish normal range of components of cord blood cells in healthy fetuses from 19 to 37 weeks' gestation and to provide proof for diagnosis of hematological disorders in prenatal fetuses and premature infants.Methods Twelve hematological parameters were determined in 182 fetuses using Coulter GENS system 2 full automated blood cell counter,and the blood cells were classified by microscope.Results The number of white blood cell(WBC) was increased gradually from 3.58?10~9/L to 5.76?10~9/L with the gestational weeks increasing from 19 to 37 weeks.The differential counts indicated that the lymphocytes represented the main population.The number of lymphocytes and normoblast was decreased gradually and that of neutrophils was increased gradually.The numbers of monocytes,eosinophils and basophils remained stable as the increasing of gestational weeks.The red blood cell(RBC),hemoglobin(HGB) and hematocrit(HCT) were increased gradually but mean corpuscular volume(MCV) was decreased.The differences between mean corpuscular hemoglobin(MCH),platelet volume distribution width(PDW),mean platelet volume(MPV),plateletcrit(PCT) and mean corpuscular hemoglobin concentration(MCHC) were not significant among different fetuses' ages.Conclusion The components of cord blood cells in healthy fetuses are dynamic and the establishment normal range of components of cord blood cells in healthy fetuses is helpful to diagnose the disorders in prenatal fetuses and premature infants.

The cytochrome P450 (CYP) family is the most important drug-metabolizing enzyme in human body and is responsible for the metabolism of endogenous and exogenous compounds. As the main site of the expression of the CYP family, the liver is the metabolic center of drugs, and in recent years, the role of the CYP family in the liver has attracted wide attention from the scholars in China and globally. This article reviews the distribution differences of the CYP family from the aspects of anatomy, genetics, and genomics, changes in the expression of the CYP family in the pathological processes such as non-alcoholic fatty liver disease, alcoholic liver disease, liver fibrosis, liver cirrhosis, and hepatocellular carcinoma, and the effect of CYP family-mediated enzyme activity on the treatment effect of pharmacotherapy for metabolic-associated liver diseases, in order to provide important enlightenment for identifying key drug intervention targets in diseases and enhancing clinical efficacy and safety.

Macrophages, as important immune cells, are involved in the key processes that maintain the homeostasis of intrahepatic microenvironment. Recent studies have shown that different liver diseases can induce macrophage polarization (MPP) and form M1 and M2 phenotypes with mutual antagonism. The former promotes the clearance of pathogens and inhibits tumor progression, while the latter exerts an anti-inflammatory effect and promotes tissue repair. However, there are significant differences in the mechanism of action and phenotypic switching of MPP in different liver diseases or at different pathological stages of the disease. This article focuses on the origin and polarization characteristics of intrahepatic macrophages and summarizes the research advances in the role of MPP in the pathogenesis and therapeutic drugs of non-neoplastic liver diseases such as viral hepatitis, alcoholic liver disease, non-alcoholic fatty liver disease, and liver fibrosis, in order to explore the potential of MPP in regulating the immune response and inflammatory response of liver diseases.

Acute liver failure （ALF） is one of the most critical liver diseases in clinical practice and seriously affects the life and health of Chinese people. Due to its high morbidity and mortality rates， unclear pathogenesis， and limited treatment methods， ALF has become a major problem that needs to be solved urgently in the field of liver diseases. In recent years， more and more studies have shown that endoplasmic reticulum stress is a key biological process in the progression of ALF， and the IRE1α/TRAF2/JNK pathway， as a part of endoplasmic reticulum stress signaling， plays a role in amplifying inflammatory response， promoting hepatocyte apoptosis， and inhibiting liver regeneration ability during the progression of diseases. As a traditional treasure of China， traditional Chinese medicine has become a research hotspot in search for effective prevention and treatment drugs for ALF from monomers of Chinese herbs. This article elaborates on the mechanism of action of the IRE1α/TRAF2/JNK pathway in the progression of ALF and summarizes the potential value of several monomers of Chinese herbs in regulating this pathway， such as salidroside， Fructus Broussonetiae， Fructus Psoraleae+Schisandra chinensis， baicalein， genipin， kaempferol， resveratrol， sea buckthorn polysaccharide extract， and luteol， in order to provide a reference for further research and clinical practice of ALF.