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Organoid is a newly developed cellular there-dimensional culture system in recent years. Organoids have a three-dimensional structure, which is similar to that of the real organs. Together with the characteristics of self-renewal and reproduction of tissue origin, organoids can better simulate the function of real organs. Organoids provide a new platform for the study of organogenesis, regeneration, disease pathogenesis, and drug screening. The digestive system is an essential part of the human body and performs important functions. To date, organoid models of various digestive organs have been successfully established. This review summarizes the latest research progress of organoids of taste buds, esophagi, stomachs, livers and intestines, and prospects future application of organoids.
Assuntos
Humanos , Organoides , Intestinos , FígadoRESUMO
Objective:To explore the safety and efficacy of Castor branched stent-graft exclusion in the treatment of aortic dissection and aneurysm involving left subclavian artery.Methods:The clinical and imaging data of 88 patients with aortic dissection or aneurysm involving left subclavian artery diagnosed by CTA or DSA in our hospital from December 2017 to December 2019 were collected retrospectively, including 67 aorta dissections, 7 thoracic aortic aneurysms and 14 aorta penetrating ulcer. All patients were treated with branched stent-graft under the guidance of DSA. The postoperative curative effect and complications were observed. The paired t test was used to compare the maximum aortic diameter of the lesion before and 6 months after the operation. Results:Eighty-eight patients were successfully treated with integrated stent, the success rate of operation was 100%, and the disease-related symptoms of all patients were basically or completely relieved. The mortality rate within 1 month after the operation was 2.7% (2/88). The two deaths were complicated with other serious diseases before the operation, and the cause of death was not related the operation. All patients were followed up except 4 patients who lost contact after discharge. During the follow-up, there were 1 case of retrograde type A dissection, 1 case of new aneurysm of aortic arch, 2 cases of in-stent stenosis of left subclavian artery branch, 3 cases of mild stroke, no persistent endoleak and no death or other serious complications. The mean maximum aortic diameter at 6 months after operation [(34±4)mm] was significantly lower than that before operation [(38±6 mm)] ( t=6.63, P<0.05). Conclusion:Castor branched stent-graft is simple, mini-invasive and effective in the treatment of aortic dissection and aneurysms involving the left subclavian artery.
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Objective To evaluate the feasibility and clinical outcomes of interventional treatment of Budd-Chiari syndrome (BCS) associated with simultaneous upper gastrointestinal hemorrhage.Methods The clinical data of 32 patients of BCS with upper gastrointestinal hemorrhage from October 2015 to April 2008 in First Affiliated Hospital of Zhengzhou University were analyzed retrospectively.Variceal embolization and inferior vena cave (IVC) and/or hepatic veins (HV) angioplasty were performed simultaneously.Perioperative complications were observed.Portal vein pressures were measured through catheterization preand post-operation.Restenosis of IVC and HV,upper gastrointestinal hemorrhage were observed on followup.Results Percutaneous transluminal balloon angioplasty were successfully carried out in all patients:16 patients with IVC and 17 patients with HV stenosis underwent angioplasty without stent placement.Portography indicated one esophageal and gastric varices in 17 patients and two in 15 patients.All the varices were embolized successfully.The portal vein pressure reduced from (35.7±2.9) cmH2O to (31.2±2.5) cmH2O (P ＜ 0.05,1 cmH2O =0.098 kPa).Portal vein pressure reduced from (35.8± 3.0) cmH2O to (30.7±2.3) cmH2O in HV type BCS post-operation,and reduce from (35.6±3.0) cmH2O to (31.8±2.6) cmH2O in HV and IVC involved type,which indicated that portal vein pressure decreased more obviously after HV recanalization.On follow-up for 3 to 32 months (mean 11.7 ±7.8 months),7 patients with IVC and 5 patients with HV stenosis developed restenosis.Transluminal balloon angioplasty was performed.No upper gastrointestinal hemorrhage occurred during the follow-up period.Conclusion One-stage interventional treatment of BCS with upper gastrointestinal hemorrhage was safe and effective,and had satisfactory mediumlong term outcomes.
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Objective To evaluate the feasibility and efficacy of 125 I radioactive seed implantation in treat-ment of aggressive thymoma pleural metastases after surgical resection.Methods The clinical data of 16 patients with thymoma confirmed underwent surgery were retrospectively analyzed.All post -operative pleural metastasis were trea-ted by radioactive particle planting.Results No patients occurred serious complications.15 patients survived at the end of 12 months following -up,13 patients with complete or partial relieved,2 patients progressed and 1 patient lost to following -up.Conclusion DynaCT -guided 125 I radioactive seed implantation is effective and safe for treating aggressive thymoma pleural carcinomatosis,it offers a new and feasible treatment.
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Objective To study the significance of c-met mRNA in axillary drainage after operations for breast cancer. Methods RT-PCR assay was used to examine c-met mRNA in axillary drainage after operations in 52 cases of breast cancer. The relationships between the expression of c-met and the tumor size, metastatic lymph nodes, the expressions of estrogen receptor (ER), progesterone receptor (PR) and c-erbB-2 were analyzed, respectively. In addition, the effect of douching operative field with 5-FU and distilled water on the expression of c-met mRNA was also analyzed. Results ①The proto-oncogene c-met mRNA could be detected in axillary drainage after operations for breast cancer by RT-PCR, and its positive rate was higher than that in routine pathological detection for micrometastasis in the axillary lymph nodes (P