【Abstract】Objective To introduce the birth and development of model of endstage liver disease (MELD) and evaluate its effect on liver transplantation(LT) as a new scoring system. Methods Literatures of MELD applied in LT were analyzed retrospectively. Results MELD scoring system was used for predicting the prognosis of patients with endstage liver disease and the death risk of candidates on waiting LT extensively and the order of organ sharing was determined by its predicable results. Conclusion MELD has been had a successful initial implementation for predicting the shortterm survival probability and mortality in patients with endstage liver disease, and meeting the goal of providing a system of allocation that emphasizes the urgency of the candidate while diminishing the reliance on waiting time, which has been proven to be a powerful tool for auditing the liver allocation system.
Objective To collect and analyze published experimental and clinical studies about the protective function of ischemic preconditioning (IPC) to organs, in order to learn the history of IPC, the progress of experimental as well as clinical studies, and explore the mechanism of IPC in organ transplantation. Methods The electronic search of MEDLINE (1966 to Aug. 2009), EMbase (1974 to Aug. 2009) and The Cochrane Library (Issue 2, 2009) were performed to include and exclude the retrieved articles by two reviewers independently. The included studies were further treated for analysis and discriptive review. Results A total of 1 398 papers were included, of which about 75 percent were experimental studies, and only about 25 percent were clinical studies. About 73 percent studies focused on the heart and liver. Althrough the studies about the effects induced by IPC on the heart, brain, spinal cord and liver increased obviously in recent years, the clinical studies concerned the heart and liver operation and transplantation still far lagged behind experimental studies, especially very few clinical studies on the effect induced by IPC on kidney, lung, gastrointestinal tract and pancreas. Conclusion IPC intervention can effectively protect the heart and lung from the I/RI during the surgical and transplatational operations, and the hepat-surgical and living liver transplantational operations. IPC can effectively protect the brain and spinal cord from I/RI, but no protective function to cadaveric liver transplantation. However, the IPC effects on the kidney and gastrointestinal tract are not confirmed and neither is the mechanism of the effect induced by IPC.
Bioactive glass (BG) has been widely used in the preparation of artificial bone scaffolds due to its excellent biological properties and non-cytotoxicity, which can promote bone and soft tissue regeneration. However, due to the brittleness, poor mechanical strength, easy agglomeration and uncontrollable structure of glass material, its application in various fields is limited. In this regard, most current researches mainly focus on mixing BG with organic or inorganic materials by freeze-drying method, sol-gel method, etc., to improve its mechanical properties and brittleness, so as to increase its clinical application and expand its application field. This review introduces the combination of BG with natural organic materials, metallic materials and non-metallic materials, and demonstrates the latest technology and future prospects of BG composite materials through the development of scaffolds, injectable fillers, membranes, hydrogels and coatings. The previous studies show that the addition of BG improves the mechanical properties, biological activity and regeneration potential of the composites, and broadens the application of BG in the field of bone tissue engineering. By reviewing the recent BG researches on bone regeneration, the research potential of new materials is demonstrated, in order to provide a reference for future related research.
Objective To get the information about the cognition and attitude towards organ transplantation and donation in inpatients. Methods The inpatients were investigated by using a self-designed questionnaire，including general data，cognition and attitude towards organ transplantation and donation. The influence factors of organ transplantation and donation were analyzed by SPSS 18.0. Results A total of 1 000 questionnaires were delivered，973 returned，the effective questionnaire was 906，and the effective rate was 93.1%. In 906 valid questionnaires，788 （87.0%） patients knew organ transplantation；189 （20.9%） patients had transplanted relatives；511 （56.4%） patients were willing to accept the organ transplant surgery，226 （24.9%） patients did not want，169 （18.7%） patients did not know；490 （54.1%） patients agreed to donate organ，173 （19.1%） patients disagreed，243 （26.8%） patients did not know. The age，education，occupation，knowing organ transplants，and with organ transplanted relatives or not had significant influences to the willingness towards organ transplantation and donation （P＜0.01）. The gender had no effect on organ transplantation （P=0.727） and donation （P=0.935） concerned issues，but the age，education，knowing organ transplantation，and with organ transplanted relatives or not had significant influences on it （P＜0.01）. Most concerned factors about organ transplantation were as follows：with an available organ for transplantation 〔28.7% （260/906）〕，postoperative quality of life 〔23.0% （208/906）〕，risk of surgery 〔21.5%（195/906）〕，surgery costs 〔19.5% （177/906）〕，and postoperative rejection 〔7.3% （66/906）〕. Most concerned factors about organ donation were as follows：the reasonable usage of donated organs 〔57.4% （520/906）〕，attitude of relatives 〔23.8% （216/906）〕，and donation compensation 〔17.6% （159/906）〕，and others 〔1.2% （11/906）〕. According to the way of organ donation，403 （44.4%） patients were willing to accept donation after cardiac death （DCD），257 （28.4%） patients accept donation after brain death，246 （27.2%） patients accept living organ donation. The gender，education，and occupation had significant influences on the way of organ donation （P＜0.05），but age，knowing organ transplantation，and with organ transplanted relatives or not had no effects on it （P＞0.05）. Conclusions The lack of propaganda and the high costs of transplantation surgery are the main factors restricting the acceptance rate of organ transplantation. Over time，with continuous improvement of universal education and strengthening the publicity of organ transplantation，the acceptance rate will show a constant increase in the trend. By now，the most accepted way of organ donation is DCD in inpatients. The establishment of a reasonable organ allocation and compensation system is a corner stone to promote organ donation.
Background and Objective Organ transplantation has become an essential and irreplaceable treatment for patients with organ failure. Although organ transplantation was introduced to China in the 1960s, it has witnessed rapid development in recent years. However, problems have been identified in the course of its development. We aim to present both medical and legal points of view on organ transplantation, to compare the current status of organ transplantation in China with that in developed countries, and discuss the challenges China faces in developing its own legislation for organ transplantation. Methods We searched the websites of WHO, NIH, AST, UNOS, and governments, as well as relevant conference proceedings and expert consensus documents. Articles or documents involving organ transplantation legislation were identified. Results We included 10 legal documents, 1 regulation, 9 government documents, and 4 expert consensus documents. Organ transplantation legislation started in the 1960s in the United Kingdom, and was soon followed by New Zealand and the United States. The first law on brain death was enacted in the United States in 1978. Since 1991, the World Health Assembly (WHA) and other non-governmental organizations have issued 7 consensus documents in order to regulate behaviors related to organ transplantation. China including Hong Kong, Macau and Chinese Taipei has not yet formulated any law on organ transplantation. Conclusion At least six challenges about organ transplantation and brain death legislation in China are identified: ① death definition and source of organ donors; ② prevention of organ transplant tourism; ③ risk assessment and insurance for living donors; ④ defining who has the right to choose about potential organ donation for an individual: whether spouses, parents, or children; ⑤ whether an organ donor should receive compensation; ⑥ whether brain death and organ transplant laws should be formulated separately.
ObjectiveTo explore the curative effect and the appropriate time of sequentially with minimal invasive methods in treatment of elderly acute calculous cholecystitis patients combined with organ dysfunction syndrome (ODS). MethodsClinical data of 67 elderly acute calculous cholecystitis patients combined with ODS who received treatment in our hospital from December 2010 to December 2013 were collected retrospectively. All of the 67 patients were treated with percutaneous transhepatic gallbladder drainage (PTGBD) under the guidance of B ultrasound or CT at first, as well as systemic anti infective therapy, and then underwent laparoscopic cholecystectomy (LC) sequentially when situation of body got well. ResultsAll of the 67 patients (100%) were treated with PTGBD successfully, but only 65 patients finished the latter related test. For the 65 patients, compared with before PTGBD, the patient's pain, abdominal distention, vomiting, leukocyte count, neutrophil ratio, glutamic-pyruvic transaminase, total bilirubin, C-reactive protein, and temperature had gotten obviously better on 1 and 4 d after PTGBD (P<0.05). There were 3 patients dropped LC, 2 patients transferred to mini-incision cholecystectomy, and the rest of 60 patients underwent LC successfully. All of the patients recovery and discharged from hospital in 2-7 days after operation. ConclusionSequentially mini-invasive method is a simple, easy, safe, effective, mini trauma, and quick recovery method for the elderly acute cholecystitis patients combined with the ODS.
Objective To investigate the immunoregulatory effects of immunonutrient ω-3 polyunsaturated fatty acid (PUFA) and its applications in organ transplantation. Methods Relevant literatures of recent years were reviewed. Results The immunoregulatory effects of ω-3 PUFA can inhibit proliferation and activation of the immunocompetent cells including T cell and B cell, reduce cytokine production, modulate immunologic response, improve graft function, pro-long survival, reduce episodes of rejection, and lessen adverse reactions of immunosuppressor.Conclusion ω-3 PUFA should have wide applications in organ transplantation due to its immunoregulatory effects. However, this research should be further studied.
ObjectiveTo summarize current patient-derived organoids as preclinical cancer models, and its potential clinical application prospects. MethodsCurrent patient-derived organoids as preclinical cancer models were reviewed according to the results searched from PubMed database. In addition, how cancer-derived human tumor organoids of pancreatic cancer could facilitate the precision cancer medicine were discussed. ResultsThe cancer-derived human tumor organoids show great promise as a tool for precision medicine of pancreatic cancer, with potential applications for oncogene modeling, gene discovery and chemosensitivity studies. ConclusionThe cancer-derived human tumor organoids can be used as a tool for precision medicine of pancreatic cancer.
Objective To explore the whole constructive conception and organization structure strategy of multi-disciplinary team (MDT) for colorectal cancer (CRC). Methods Combined the characteristics of large public hospital, with recognized treatment pathway in MDT for CRC and the way of medical project construction, MDT for CRC project team summarized a system of MDT for CRC of West China Hospital (MDT-CRC-WCH) by own characteristics and subject feature. Results MDT for CRC summarized the 5 basic characteristics about profession, classification, interaction, optimization and fast. The project has the core competencies: system new operation types for colorectal cancer and volunteer culture. By the matrix organization structure, MDT set the main departments: database team, follow-up team, nursing team and public team. Conclusion With effective MDT whole construction and suitable organization structure, MDT will develop in long time.
Diabetic retinopathy is one of the microvascular complications of diabetes and a major cause of blindness in adults. Early screening is an effective way to reduce blindness caused by diabetic retinopathy. The diabetic retinopathy is one of the chronic retinal diseases highlighted in the “14th Five-Year” National Eye Health Plan (2021-2025). The establishment of effective and practical community screening model is a powerful guarantee to complete early screening. It is of great significance to standardize screening methods, screening personnel duties, equipment allocation, referral conditions and screening sustainability. Chinese fundus disease and related field experts developed the consensus through a serious, comprehensive, and complete discussion, to provide more reference for establishing a suitable community screening model of diabetic retinopathy and increasing the screening rate of diabetic retinopathy.