Frailty is a common state or syndrome with a decline in physiological reserves and an increase in an individual's vulnerability for stress in the elderly.Frailty can increase the risk of disability,falls,hospitalization,delirium and mortality.However,the intervention of frailty is under the scarcity and its effectiveness is not satisfied.We need to find new targets to treat frailty according to the pathophysiology of frailty.Human physiology is very similar to that of mouse,thus,mouse can be an ideal animal model of human disease.Mouse models can provide insight into pathogenesis of frailty by reducing the influence of genetic and environment factors and provide more basic data for further studies of frailty.At present,the research on a mouse model of frailty is still in its infancy and still needs further study.This review will summarize the related studies and propose some new ideas for future studies on mouse model of frailty.

In this paper,we analyzed one case of primary multifocal extranodal non-Hodgkin's lymphoma and reviewed the related literatures.We investigated the clinical data of this case with primary multifocal extranodal lymphoma and retrospected the related references.The key words,primary extranodal lymphoma and multifocal,were used to search Pubmed and Wanfang Database,and finally only three cases were found.The 68-yea-old woman was confirmatively diagnosed as primary multifocal extranodal B cell non-Hodgkin's lymphoma.The positron emission tomography/computed tomography (PET/CT) scan showed multiple hypermetabolic lesions in the left humerus,both kidneys and ileum.The confirmative diagnosis was based on clinical manifestations and serological tests,imaging features of CT and PET/CT,and especially on the histopathological and immunohistochemical studies.After one cycle chemotherapy (rituximab,Vincristine and prednisone) and another cycle (rituximab,Vincristine,cyclophosphamide and prednisone),a repeat PET/CT scan showed a complete metabolic resolution of the lesions in the kidneys and ileum,and a partial metabolic resolution of the left humerus.After four cycles of chemotherapy,there were new extensive involvements of the right supraclavicular and intrapulmonary lymph nodes,bilateral pleural and pericardium,and the patient gave up chemotherapy.This case demonstrated the imaging findings of an uncommon primary multifocal extranodal lymphoma in left humerus,both kidneys and ileum,and highlighted the usefulness of CT and PET/CT scan in identifying the extent of disease involvement,in guiding a biopsy,and in assessing the treatment response of lymphoma.It is essential to differentiate between primary multifocal extranodal lymphoma and lymphoma extensive metastases.

Objective To summarize studies about palliative care (PC) in mainland China and to provide a guidance for propagandizing the concept of palliative care and to carry out related investigations.Methods Key words of Shu Huan Yi Xue,Gu Xi Zhi Liao,An Ning Liao Hu,Ling Zhong Guan Huai,Shu Huan Yi Liao,together with conception,acceptance were used in CBM.And palliative care AND China AND(acceptance OR acknowledgement OR concept OR conception) were used in PubMed.Above searches were for articles,without any other limitations such as publishing date,author,journal,type or language.Eligible articles investigating acceptance of palliative care in mainland China were screened out with artificial work.Descriptive analysis was adopted as a statistic method.Results A total of 35 articles related with palliative care were picked out.Most of the investigation methods were questionnaire.The palliative care-accepting degrees were 25.3 ％ to 86.6％ in overall,25.3％ ～70.8％ in the elderly,30.8％ ～ 56.2％ in advanced stage of cancers,61.7％ ～ 68.4％ in families of patients,and 56.6％～95.8％ in health care workers.In the subgroup analysis,the acceptance showed no difference between genders.But age,followed by careers,degrees of medical education and religions and nationalities were all effective factors for the acceptance of palliative care,which was mostly agreed in all the articles.Conclusions People in mainland China are insufficient very much in the perception of palliative care idea.More publicity and education are needed to popularize the palliative care idea.More studies with better design and more rigorous protocol are needed to have a better understanding of the acceptance of palliative care.

Objective To assess the clinical characteristics of systemic lupus erythematosus (SLE) in the elderly in Xinjiang.Methods As a retrospective study,clinical date and laboratory test results were collected from 87 elderly SLE patients and 222 non-elderly SLE patients (age ＜ 50 years) hospitalized in the People's Hospital of the Xinjiang Uygur Autonomous Region from January 2006 to July 2016.Results The female to maleratio was 5.7 ∶ 1.0 in the older-onset SLE group and the female to male ratio was 11.3 ∶ 1.0 in the younger-onset SLE group.Of the 13 patients with predisposing factors in the older-onset SLE group(14.9 ％),11 had infection (12.6 ％),whereas the 27 patients with predisposing factors in the younger-onset SLE group (12.2 ％)had pregnancy,abortion or insolation,in addition to infection.Arthritis (63.2 ％),weakness (40.2 ％),malar rashes (36.8 ％),anorexia(26.4 ％),and shortness of breath(26.4 ％) were common clinical manifestations in the olderonset SLE group.The incidence of anorexia in the older-onset SLE group was higher than that in the younger-onset SLE group(P＜0.01),while the incidence of trichomadesis was lower in the older-onset SLE group than that in the younger-onset SLE group(P＜0.01);Aminotransferase elevation,creatinine elevation and thrombocytopenia were more common in the older-onset SLE group than in the younger SLE group (P＜0.05).Lower rates of positive anti-Smanti body and anti-Acl antibody were found in the older onset SLE group,compared with the younger-onset SLE group (P＜0.05);Han older-onset SLE patients showed higher rates of oral ulcers than older-onset SLE patients of Uygur,Kazak or other ethnic minorities (P＜0.05).There were no significant differences between Han and Uygur/Kazak patients in laboratory test results.Conclusions The proportion of male SLE patients in the elderly is higher than that in non-elderly SLE patients in Xinjiang.Also,elderly SLE patients are prone to oral ulcers but often do not show typical early clinical symptoms and have low levels of specific antibodies.Therefore,clinicians should pay particular attention to older onset SLE patients in order to reduce the rates of misdiagnosis and missed diagnosis.

Objective To analyze the clinical prognosis and its influencing factors in elderly patients with myelodysplastic syndrome.Methods A total of 36 elderly patients with myelodysplastic syndrome were included in this study,who were diagnosed and treated at our hospital from January 2013 to August 2016.The Kaplan-Meier method was used to analyzed the survival of these patients,and the effects of gender,age,WHO classification,white blood cell count,platelet count,hemoglobin and IPSS grouping on survival were analyzed.The independent risk factors associated with the clinical prognosis of patients were identified by using multivariate Cox regression analysis.Results Patients were followed up until March 31,2017 with a follow-up time ranging from 8 to 31 months.During the follow-up period,19(58.3％)deaths and 17(41.7％) survivals were reported.The average survival time was(19.17±1.47)months.Kaplan-Meier survival analysis showed that age,WHO classification,white blood cell count,platelet count and IPSS grouping were closely associated with survival in elderly patients with myelodysplastic syndrome.Multivariate Cox regression analysis showed that age and IPSS grouping were independent prognostic factors in elderly patients with myelodysplastic syndrome.Conclusions Age,WHO classification,white blood cell count,platelet count and IPSS grouping are closely related to the prognosis of myelodysplastic syndrome in elderly patients.

Objective To evaluate the clinical value of multi-slice spiral CT (MSCT)in the screening of coronary artery lesions in elderly patients with diabetes mellitus.Methods MSCT and coronary angiography(CAG)were performed in 136 elderly patients(68 patients with diabetes and 68 patients without diabetes).The number of diseased coronary segments and the plaque type (noncalcified,mixed and calcified)for each patient were determined.The characteristics of coronary lesions were compared between patients with and without diabetes.The sensitivity and specificity of MSCT were evaluated.Results More noncalcified and calcified plaques and few ermixed plaques were observed in patients with diabetes,compared with patients without diabetes(noncalcified plagues:10 cases or 14.7％ vs.4 cases or 5.9％;calcified plagues:47 cases or 69.1％ vs.39 cases or 57.4％)(P＜ 0.05).In addition,diabetic patients showed a significantly higher frequency of multivessel disease(P＜0.05).Furthermore,MSCT was able to clearly show stenosis and plaque type in the trunk and branches of the coronary artery,with a sensitivity of 91.0％,a specificity of 95.0％,a positive predictive value of 93％ and a negative predictive value of 96.0％.Conclusions Diabetes is associated with a higher risk of coronary artery disease.MSCT can effectively detect the characteristics of coronary artery disease in diabetic patients and is an effective,noninvasive,and safe screening method.