BACKGROUND:A series of studies have found that mesenchymal stem cells play an important role in the prevention and cure of acute lung injury in adult animals.
OBJECTIVE:To further validate the effects of human umbilical cord mesenchymal stem cells on endotoxin-induced acute lung injury in newborn rats.
METHODS:Total y 120 newborn rats aged 7 days were randomly assigned to three groups. Intraperitoneal injection of 3 mg/kg endotoxin was done to establish neonatal rat model of acute lung injury in the model and stem cellgroup. Rats in the normal saline group were intraperitoneal y injected with 0.1 mL normal saline. After 30 minutes of modeling, the rats in the stem cellgroup were subjected to intraperitoneal injection of 0.1 mL human umbilical cord mesenchymal stem cells (1×106). The same volume of normal saline was administered in the normal saline and model groups. Lung tissue and blood specimens from newborn rats were taken at 6 hours, 1 day, 2 days, 4 days, and 7 days after treatment to observe lung pathological changes and detect levels of serum tumor necrosis factor-alpha and interleukin-10 as wel as myeloperoxidase activity in the lung tissue.
RESULTS AND CONCLUSION:The lung hematoxylin-eosin staining and myeloperoxidase activity indicated acute lung injury in the model group. At 4 and 7 days after modeling, the severity of lung injury in the stem cellgroup was lighter than that in the model group. Compared with the model group, the interleukin-10 level was significantly increased in the stem cellgroup, while the level of tumor necrosis factor-alpha was significantly reduced (P<0.05). These findings suggest that human umbilical cord mesenchymal stem cells transplanted into newborn rats with acute lung injury can reduce lung inflammation, and the main mechanism may be that human umbilical cord mesenchymal stem cells can balance anti-inflammatory and pro-inflammatory factors and reduce lung injury through immune regulation.

Objective To investigate the prognosis of local resection in patients with low rectal cancer, and assess surgical indications for this procedure. Methods One hundred and twenty-four patients with low rectal cancer from Jan 1975 to Dec 2006 were analyzed, the clinicopathologic features and surgical, outcome were examined as prognostic factors. Survival rate was estimated by Kaplan-Meier method and compared by Log-Rank test, prognostic factors were analyzed by multivariate COX proportional hazards model. Results The 5-year survival rate of 124 patients underwent local resection was 90.7 %(97/107), there were 4.8 %(6/124) patients with complications and 15.3 %(19/24) ones with local recurrence.The infiltration, vascular invasion, the size of tumor and the histological grade were significant prognostic factors of overall survival, but gender, age, the tumor site and the macroscopic type were not. Multivariate analysis indicated that the tumor infiltration were independent poor prognostic factor. Conclusion Local resection is suitable for Tis and T1 low rectal cancer, and those with high local recurrence factors should undergo radical resection. Strict follow-up and adjuvant therapy is necessary for local excision.

OBJECTIVE: Dynamic observation of Epstein-Barr virus (EBV) DNA load before and after the treatment in patients with Nasopharyngeal carcinoma (NPC), predicting the incidence of distant metastasis and offering more personalised choice of therapies. METHOD: Fifty-four cases of patients with NPC were taken by fluorescence quantitative PCR assay of EBV DNA load before and after the treatment, all patients were followed up according to plan and carried out the progression-free survival (PFS) and overall survival (OS). RESULT: EBV DNA load in plasma of patients with NPC can partly reflect the clinical characteristics of patients; EBV DNA load in some patients with distant metastasis was higher than those patients with continuous remission when they were not started treatment (P < 0.05); For those patients whose EBV DNA copies were lower than 20,000 copies/mI before the treatment, the progression-free survival and overall survival rates were higher than those high expression patients, and the difference were statistically significant (PF < 0.01 and P < 0.05). CONCLUSION The EBV DNA load in the plasma of NPC patients can partly predict the occurrence of distant metastases before treatment.
Adolescent ; Adult ; Aged ; Carcinoma ; DNA, Viral ; blood ; Female ; Herpesvirus 4, Human ; genetics ; Humans ; Male ; Middle Aged ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; therapy ; virology ; Neoplasm Metastasis ; Viral Load ; Young Adult

Total mesorectal excision(TME) has become the standardized modality in rectal cancer surgery. The strict quality control of surgery has been introduced. The improvement of surgery quality resulted in the decrease of local recurrence rate and the increase of survival rate. TME becomes the model that quality control of surgery improved outcomes. In view of this, in recent years, complete mesocolic excision (CME) and extralevator abdominoperineal excision (ELAPE) have been established as the corresponding standardized procedures, which shows the preliminary clinical effects. Utilization of laparoscopic surgery for management of colorectal cancer has been widely accepted. Laparoscopic TME and CME will further improve the overall outcomes of colorectal cancer.
Abdomen ; Colorectal Surgery ; Humans ; Laparoscopy ; Mesocolon ; Perineum ; Quality Control ; Rectal Neoplasms ; Rectum ; Survival Rate

Total mesorectal excision (TME) has become the standardized modality in rectal cancer surgery. The strict quality control of surgery has been introduced. The improvement of surgery quality resulted in the decrease of local recurrence rate and the increase of survival rate. TME becomes the model that quality control of surgery improved outcomes. In view of this, in recent years, complete mesocolic excision (CME) and extralevator abdominoperineal excision (ELAPE) have been established as the corresponding standardized procedures, which shows the preliminary clinical effects. Utilization of laparoscopic surgery for management of
colorectal cancer has been widely accepted. Laparoscopic TME and CME will further improve the overall outcomes of colorectal cancer.

Colorectal surgery is a major therapeutic approach for various colorectal diseases. Surgery and perioperative management, such as fasting, mechanical bowel preparation, and antibiotics use, have an impact on the composition and function of gut microbiome. Abnormal microbiome reconstruction may lead to multiple complications, including infection, gastrointestinal dysfunction, anastomotic leak and disease recurrence. The aim of this review is to elucidate the roles and mechanisms of perioperative interventions of colorectal surgery on gut microbiome, which may provide a novel insight into the microbe-based therapies in the perioperative period of colorectal surgery.

Total mesorectal excision (TME) has become the standardized modality in rectal cancer surgery. The strict quality control of surgery has been introduced. The improvement of surgery quality resulted in the decrease of local recurrence rate and the increase of survival rate. TME becomes the model that quality control of surgery improved outcomes. In view of this, in recent years, complete mesocolic excision (CME) and extralevator abdominoperineal excision (ELAPE) have been established as the corresponding standardized procedures, which shows the preliminary clinical effects. Utilization of laparoscopic surgery for management of
colorectal cancer has been widely accepted. Laparoscopic TME and CME will further improve the overall outcomes of colorectal cancer.

Colorectal surgery is a major therapeutic approach for various colorectal diseases. Surgery and perioperative management, such as fasting, mechanical bowel preparation, and antibiotics use, have an impact on the composition and function of gut microbiome. Abnormal microbiome reconstruction may lead to multiple complications, including infection, gastrointestinal dysfunction, anastomotic leak and disease recurrence. The aim of this review is to elucidate the roles and mechanisms of perioperative interventions of colorectal surgery on gut microbiome, which may provide a novel insight into the microbe-based therapies in the perioperative period of colorectal surgery.

Vessel identification and dissection are the key processes of laparoscopic complete mesocolic excision (CME). Vascular injury will lead to complications such as prolonged operative time, intraoperative hemorrhage and ischemia of anastomotic stoma. Superior mesenteric artery (SMA), superior mesenteric vein(SMV), gastrointestinal trunk, left colic artery(LCA), sigmoid artery and marginal vessels in the mesentery have been found with possibility of heteromorphosis, which requires better operative techniques. Surgeons should recognize those vessel heteromorphosis carefully during operations and adjust strategies to avoid intraoperative hemorrhage. Preoperative abdominal computed tomography angiography(CTA) with three-dimensional reconstruction can find vessel heteromorphosis within surgical area before operation. Adequate dissection of veins instead of violent separation will decrease intraoperative bleeding and be helpful for dealing with the potential hemorrhage. When intraoperative hemorrhage occurs, surgeons need to control the bleeding by simple compression or vascular clips depending on the different situations. When the bleeding can not be stopped by laparoscopic operation, surgeons should turn to open surgery without hesitation.
Colonic Neoplasms ; surgery ; Dissection ; Hemorrhage ; prevention & control ; Humans ; Laparoscopy ; Mesenteric Artery, Inferior ; Mesenteric Veins ; Mesocolon ; surgery

Objective:To explore the current situation and influencing factors of somatic and psychological symptoms among nursing undergraduate students.Methods:This study was a cross-sectional study. Through snowball sampling and convenience sampling, 806 nursing undergraduate students from East, South, Central, North, Northwest and Southwest China were selected as the research subjects from March to July 2021. A survey was conducted among nursing undergraduate students using the Patient Health Questionnaire-15 (PHQ-15), Patient Health Questionnaire-2 (PHQ-2), and Generalized Anxiety Disorder-2 (GAD-2) .Results:The positive detection rates of somatic symptoms, depression, and anxiety among 806 nursing undergraduate students were 66.5% (536/806), 14.3% (115/806), and 12.9% (104/806), respectively. The results of binomial Logistic regression analysis showed that chronic diseases, perceived health status, and water intake were the influencing factors for psychological and somatic symptoms of nursing undergraduate students ( P<0.05). Nursing undergraduate students' somatic symptoms, depression and anxiety were positively correlated ( P<0.05) . Conclusions:The detection rate of somatic symptoms among nursing undergraduate students is high. Families and universities should pay timely attention to the psychological and somatic health of nursing undergraduate students, and provide targeted psychological support for students with different characteristics.