Cell therapy refers to a method that transplants stem cells or differentiated functioning cells into diseased regions to compensate the losing functions of diseased cells or uses the stem cells for treatment of diseases after in vitro genetic manipulation. After more than 30 years of study, great progress in hepatocyte transplantation technique has been acquired. This technique can acquire in situ liver transplantation effects. Hepatocyte transplantation, as an effective method for treatment of fulminant hepatic failure, has been widely confirmed in the animal model experiments and clinical practice. In addition, application of remedial hepatic stem cells can solve the problems regarding the source, number and immune rejection of hepatocytes, and offers a wide prospect for treatment of acute and chronic liver diseases. There are many problems about the study on hepatic stem cells. Up to date, many manuscripts addressing animal hepatic stem cell transplantation have been found, but few of them focus on the case report of treatment of liver disease by hepatocyte transplantation. Therefore, study on hepatic stem cells is still in its initial stage. The study methods should be developed and improved.

Objective To investigate the clinic application of venturi oxygen therapy heated humidify system on artificial airway management. Methods 30 cases of experimental group used venturi oxygen therapy for humidification and heating, while 30 cases of control group were treated with continuous wet micro-injection pump method for artificial airway care. Humidifying effects, effects of oxygen therapy, incidence of pulmonary complications were compared between the two groups. Results The humidifying effects on experimental group (26 cases) were better than control group (17 cases) (χ2=6.648,P<0.05). The irritating cough (5 cases), airway mucosa injury (1 case) and the formation of sputum crust (2 cases) in experimental group were less than 13 cases, 6 cases, 6 cases in control group (χ2=5.079, 4.043, 7.954,P<0.05). The times of sputum drainage on experimental group was (17.28 ± 5.51) times which was less than (31.22±5.24) times of control group (t=4.312, P<0.01).The effect on oxygen therapy about oxygen saturation in experimental group was 0.932 2 ±0.020 5 when sputum drainage, and 0.982 2± 0.009 4 two minutes later, which was higher than 0.916 7 ±0.011 2 and 0.957 2 ±0.013 6 of control group (t=3.431,6.276, P<0.01). Conclusions Venturi oxygen therapy heated humidify system can reduce the formation of sputum crust, reduce the times of sputum drainage, reduce hypoxia degree and shorten the duration caused by sputum crust, improve the effect of heat and humidification of patient.

Cadaver donation has far-reaching social significance, but currently it cannot satisfy the practical need. Through making stochastic visits to part of dwellers in Chongqing urban districts, to find out the main obstacles to cadaver donation. Then compared to the similar activities like blood donation, we learn about the experiences of such public service activities to get further improvement of cadaver donation.

Objective To investigate the occurrence situation and related influencing factors of obesity among children aged 6-17 years old in Chengde City.Methods The random sampling method was adopted to extract 16 811 children from 10 primary and middle schools in urban and rural areas of this city.The physical examinations were carried out.The incidence rates of over weight and obesity in different ages,sexes and areas were calculated.The risk factors for childhood obesity were preliminarily screened through questionnaire.And the Logistic regression analysis was conducted for further analyzing the risk factors for childhood obesity.Results Among 16 811 sampled children,the overweight rate was 13.09％ and the obesity rate was 12.1％.The overweight rate and obesity rate in boys were higher than those in girls;which had no statistically significant difference between urban and rural areas(P＞0.05);the incidence rates of overweight and obesity in adolescence were higher than those in preadolescence.The multivariate Logistic regression analysis showed that parental overweight,like to drink sugary drinks and watching television for long time might be the risk factors for childhood obesity.Conclusion The overweight rate and obesity rate among children aged 6-17 years old in this city are higher.Reasonable diet,correct life style and increasing exercise can partially reduce the incidence of children obesity.

Objective: To explore the antagonistic effect of quercetin on fine particulate matter (PM2.5)-induced embryonic developmental toxicity in vitro.Methods: PM2.5 was collected on glass fiber filters by PM2.5 samplers during the heating period of Dec.2015 to Mar.2016 in an area of Haidian District, Beijing City.The sampled filters were cut into 1 cm×3 cm pieces followed by sonication.The PM2.5 suspension was filtered into a 10 cm glass dish through 8 layers of sterile carbasus and stored at-80 ℃ until freeze drying.Frozen PM2.5 suspension was dried by vacuum freeze-drying.In vitro post-implantation whole embryo culture was used in this study.Pregnant rats with 9.5 gestation days (GD) were killed by cervical dislocation and the uteri were removed into sterile Hank's solution.The embryos with intact yolk sacs and ecto placental cones were induced by PM2.5, and then subjected to intervention of quercetin at the doses of 0.1 μmol/L, 0.5 μmol/L, 1.0 μmol/L and 5.0 μmol/L, respectively.At the end of the 48 h culture period, the cultures were terminated, and all embryos were removed from the culture bottles and placed in prewarmed Hank's solution for evaluation.Morphological evaluation of the embryos was conducted under a stereomicroscope using the morphologic scoring system by Brown and Fabro.The mitochondrial reactive oxygen species (ROS) level was detected by FACSCalibur flow cyto-metry using MitoSOXTM Red staining.Results: An obvious antagonistic effect was achieved through querce-tin at the dose of 1.0 μmol/L, which could result in an increase of visceral yolk sac (VYS) diameter, crown-rump length and head length, somite number, and the differentiation of visceral yolk sac vascular vessels.The scores of allantois, flexion, heart, hind brain, midbrain, forebrain, auditory system, visual system, olfactory system, branchialarch, maxillary process, forelimb bud and hindlimb bud also revealed a significant increase and the relative mitochondrial ROS level of embryonic cells was significantly decreased when compared with PM2.5 group.Although quercetin at the doses of 0.1 μmol/L, 0.5 μmol/L, 5.0 μmol/L also exhibited protective effects against PM2.5-induced embryonic developmental toxicity, the protective effect was weaker when compared with the dose of 1.0 μmol/L.Conclusion: Quercetin at proper dose may be of great benefit for the development of embryos exposed to PM2.5 in the uterus of the rats.Quercetin provides an effective strategy for the prevention of PM2.5-induced embryonic developmental toxicity.Clearance of mitochondrial ROS may be one of its mechanisms.

Palliative and hospice care is an emerging medical care model for the development of modern medicine,and its emergence is not only a sign of social demand and the development of human civilization,but also an important manifestation of the change in the modern medical model.Hospice care is the final stage of palliative care,which is of great significance for the end-of-life treatment of incurable diseases.Palliative and hospice care has become an independent discipline in many countries,and its development has been rapid.However,the develop-ment of hospice and palliative care in China is not satisfactory,and the lack of money and human resources are the main reasons limiting its development.Many scholars have carried out a lot of useful practices in this regard.How to explore a road of hospice and palliative care development suitable for China′s national conditions is an urgent problem to be solved.By reviewing domestic and foreign literature,this paper summarizes the development mode and payment method of palliative and hospice care abroad,identifies the challenges encountered in the practice of hospice care in China,and draws on the development experience of palliative and hospice care in foreign countries.We aimed to identify pain points and difficulties faced in developing palliative and hospice care in China,so as to better serve patients at the end of life,gradually promote the concept of palliative and hospice care,and contribute to the sustainable development of palliative and hospice care in China.

Gut microbiota provide enzymes and additional biochemical metabolic pathways for the host, which together with the host genome and the external environment, influence the body function. The composition of gut microbiota in infant is closely related to health in later life. However, it is influenced by many factors, including delivery mode, feeding pattern, prenatal diet, pregnancy psychology and antepartum antibiotic treatment. Vaginal delivery and breastfeeding is beneficial for shaping gut microbiota, while cesarean section and formula feeding would reduce the amount of gut dominant bacteria. In addition, inappropriate diet during pregnancy, prenatal stress and antepartum antibiotic treatment alters bacterial colonization of the gut in infant.

ObjectiveTo investigate the risk factors for the development of advanced liver fibrosis by analyzing the clinical features of patients with in nonalcoholic fatty liver disease （NAFLD） and advanced liver fibrosis， and to establish a nomogram model for predicting the risk of advanced liver fibrosis. MethodsA retrospective analysis was performed for the clinical data of 406 NAFLD patients who attended The First Affiliated Hospital of Henan University of Chinese Medicine from January 2022 to October 2023， and according to whether liver stiffness measurement （LSM） measured by FibroScan was ≥11.0 kPa， the patients were divided into advanced liver fibrosis group with 65 patients and non-advanced liver fibrosis group with 341 patients. Related data were collected， including general information， laboratory markers， and medical history. The independent-samples t test was used for comparison of normally distributed continuous data between two groups， and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between two groups； the chi-square test was used for comparison of categorical data between two groups. A multivariate Logistic regression analysis was used to identify independent risk factors， and a nomogram model was established based on these factors. The receiver operating characteristic （ROC） curve was used to evaluate the discriminatory ability of the nomogram model， and the calibration curve was used to evaluate its effectiveness. ResultsThe univariate analysis showed that there were significant differences between the advanced liver fibrosis group and the non-advanced liver fibrosis group in age， controlled attenuation parameter （CAP）， total bilirubin， direct bilirubin （DBil）， indirect bilirubin， globin， alanine aminotransferase， aspartate aminotransferase， alkaline phosphatase （ALP）， gamma-glutamyl transpeptidase （GGT）， glucose， body mass index （BMI）， and history of diabetes （all P<0.05）. The multivariate Logistic regression analysis showed that CAP （odds ratio ［OR］=1.015， 95% confidence interval ［CI］： 1.006‍ ‍—‍ ‍1.024， P=0.010）， DBil （OR=1.345， 95%CI： 1.139‍ ‍—‍ ‍1.590， P=0.001）， ALP （OR=1.019， 95%CI： 1.008‍ ‍—‍ ‍1.029， P=0.001）， GGT （OR=1.004， 95%CI： 1.000‍ ‍—‍ ‍1.008， P=0.035） and BMI （OR=1.240， 95%CI： 1.137‍ ‍—‍ ‍1.353， P=0.001） were independent risk factors for the development of advanced liver fibrosis in NAFLD. A nomogram model was established based on the results of the multivariate Logistic regression analysis. The ROC curve analysis showed that this nomogram model had an area under the ROC curve of 0.841 （95%CI： 0.791‍ ‍—‍ ‍0.891） in predicting the development of advanced liver fibrosis in the NAFLD population， and the calibration curve showed a good degree of fitting between the observed and predicted values for the development of advanced liver fibrosis. ConclusionElevated levels of CAP， BMI， DBil， ALP， and GGT are independent risk factors for advanced liver fibrosis in NAFLD. The nomogram model established based on these factors has good predictive performance and a certain value in predicting advanced liver fibrosis.