Alzheimer's disease (AD) is the major form of dementia in the elderly and is closely related to the toxic effects of microglia sustained activation. In AD, sustained microglial activation triggers impaired synaptic pruning, neuroinflammation, neurotoxicity, and cognitive deficits. Accumulating evidence has demonstrated that aberrant expression of deubiquitinating enzymes is associated with regulating microglia function. Here, we use RNA sequencing to identify a deubiquitinase YOD1 as a regulator of microglial function and AD pathology. Further study showed that YOD1 knockout significantly improved the migration, phagocytosis, and inflammatory response of microglia, thereby improving the cognitive impairment of AD model mice. Through LC-MS/MS analysis combined with Co-IP, we found that Myosin heavy chain 9 (MYH9), a key regulator maintaining microglia homeostasis, is an interacting protein of YOD1. Mechanistically, YOD1 binds to MYH9 and maintains its stability by removing the K48 ubiquitin chain from MYH9, thereby mediating the microglia polarization signaling pathway to mediate microglia homeostasis. Taken together, our study reveals a specific role of microglial YOD1 in mediating microglia homeostasis and AD pathology, which provides a potential strategy for targeting microglia to treat AD.

Objective To compare the influence of laparoscopic inguinal hernia repair ( TAPP) and open inguinal hernia repair(Lichtenstein) on clinical serum swelling and the prevention and treatment strategy.Methods From September 2015 to September 2016,117 patients with inguinal hernia in the Second People's Hospital of Shantou were selected.The patients were divided into TAPP group and Lichtenstein group according to the operation mode .The incidence of seroma,occurrence,characteristics and diagnosis and treatment of the two groups were compared.Results There were 64 cases in the TAPP group,aged 25-73 years old,the median age was 57 years,58 cases of indirect inguinal hernia,4 cases of direct hernia ,2 cases of femoral hernia ,3 cases of refractory hernia.There were 53 cases in the Lichtenstein group,aged 24-84 years old,the median age was 63 years,41 cases of indirect inguinal hernia , 10 cases of direct hernia,2 cases of femoral hernia ,7 cases of refractory hernia.There was no statistically significant difference in the incidence rate of seroma between the two groups (P＝0.875).There were no statistically significant differences in the incidence rate of different types of seroma (all P＞0.05).There was no need for treatment of 0-II type seroma.The type III -IVa clinical seroma could be given local puncture parallel compression treatment , improved after treatment.After drainage and anti -inflammatory treatment, type IVb seroma was improved. Conclusion There is no difference in the incidence of seroma and the treatment between the two surgical procedures after inguinal hernia repair.

Objective To explore the value of serum IgA,serum C3 and IgA/C3 ratio in the diagnosis and clinical monitoring of IgA nephropathy,which provide new insight for the alternatives of renal biopsy. Methods In the first affiliated hospital of Dalian Medical University,60 patients with IgAN,60 patients with non-IgAN and 40 healthy people were detected by blood biochemical indexes and immune indexes,such as the Urea,serum IgA and serum C3,IgA/C3 ratio. According to the healthy condition and Lee grading,we divided all the 160 patients into different groups. By comparing the blood biochemical indexes and immune indexes among these different groups,we investigated the relationship between the serum IgA/C3 ratio and the IgAN.Results Firstly,the level of serum IgA and IgA/C3 were obviously different among the patients with IgAN,patients with non-IgAN and healthy people(P<0.01).Secondly,the serum IgA and IgA/C3 have high specificity and sensitivity when distin-guishing between IgAN and non IgAN. Thirdly,the level of serum IgA and IgA/C3 have significant deference be-tween the patients with Lee Ⅰ-Ⅱ grading and the patients with Lee Ⅲ-Ⅴ grading,while the level of C3 is very similar between different groups in all the three situations mentioned above. Conclusion Our research provides stronge evidence demonstrates that the level of serum IgA/C3 ratio have close relationship with IgAN and they can serve as the reference index when diagnosising and grading IgAN.

Objective The scale lists applied in the diagnosis and treatment of heat stroke generally draw on other specialty scales, and there is no specific scoring system on heat stroke verified by large-scale clinical trials.The paper compared common acute physiology and chronic health evaluationⅡ( APACHEⅡ) , dissolved inorganic carbon score( DIC score) , multiple organ dysfunction score( MOD score) for the prognostic evaluation of heat stroke patients, the sum of three scores and the sum of the percentages of three scores to the score sum on prognostic evaluation of heat stroke patients in order to find a scoring method with higher clinical value. Methods APACHEⅡ, MOD score, DIC score, the sum of three scores and the sum of three scores were applied on 43 patients with heat stroke admitted in our neurological intensive care unit ( NICU) or in intensive care unit ( ICU) .The analysis of the area under the receiver operating characteristic ( ROC) curve( AUC) analysis was made among five scores. Results The weighted sum of three scores has the largest AUC ( 0.896 ) in predicting the death of HS patients according to AUC.The optimal MOD score was 5.5 in predicting the death of HS with a sensitivity of 72.7%and a specifici-ty of 99.69%.The optimal DIC score was 1.5 in predicting the death of HS with a sensitivity of 100%and a specificity of 56.2%.The op-timal score of the sum of the percentages of three scores to the score sum was 0.727 in predicting the death of HS with a sensitivity of 72.7%and a specificity of 100%. Conclusion All the five scores can predict the prognosis of patients with heat stroke.However, due to the deficiency in the prognosis value, a more specific scoring system needs to be developed.

Objective To investigate the different influencing on the healing of anastomotic stoma between two kinds of alimentary canal reconstruction after laparoscopic radical resection of low rectal cance.Methods The clinical data of July 2013 -January 2016 suffering from stage Ⅱ -Ⅲ low rectal cancer and in our hospital underwent laparoscopic colorectal cancer radical surgery patients was retrospectively analyzed.Through accessing to medical records,the patients of diabetes,hypoproteinemia,malnutrition,preoperative uncorrectable cases and received neoadjuvant therapy were excluded.More than a total of 59 cases were enrolled,34 cases of them received traditional alimentary canal reconstruction(traditional group,including 26 cases of low rectal cancer,8 cases of super low rectal cancer,also 21 cases of them in stageⅡand 13 cases in stage Ⅲ),25 cases of them received anal anastomosis resection (including 18 cases of low rectal cancer,7 cases of super low rectal cancer,also 20 cases of them in stage Ⅱ and 5 cases in stageⅢ).Results In the traditional group,1case of 34 patients with anastomotic leakage,3 cases of anastomotic bleeding, while in the improved group,2cases of 25 patients with anastomotic leakage,2 cases of anastomotic bleeding.There was no significant difference in the incidence of anastomotic leakage and anastomotic bleeding between the two groups (3cases vs.2cases,1case vs.2cases,χ2 =0.13,0.75,all P >0.05).All cases did not occur in patients with anastomotic stenosis,and all patients were cured and discharged.Conclusion Each of the two methods have their advantages and disadvantages.Through preoperative,intraoperative evaluation of tumor status,reasonable choice of tumor treatment and anastomosis,is more conducive to postoperative recovery.

Objective Comprehensive standards of active implantable medical devices with high risks are required by China's current industrial development, and standard problems and ideas are discussed in this paper.Methods Analysis of the status of China's active implantable medical device standards and international standards. For the booming field for active implantable medical devices with high risks, international standard’s problems, ideas and trends are analyzed. Results Bottleneck of the development of China's active implantable medical device standards is the lack of Chinese medical devices industry actual independent research and development capability. China's independent standard research on the basis of independent core technology of active implantable medical devices is the opportunity to promote the internationalization of China standard.Conclusion Improving the standards of active implantable medical devices based on independent core technology, combined with problems of existing international standards, to further improve and develop international standards and lead high level international technical standards.

In recent years active implantable medical devices(AIMD) are being developed rapidly. Many battery systems have been developed for different AIMD applications. These batteries have the same requirements which include high safety, reliability, energy density and long service life, discharge indication. History, present and future of batteries used in AIMD are introduced in the article.
Electric Power Supplies ; Prostheses and Implants

Objective To explore the effect of surgical management of left colon cancer with acute obstruction.Methods A retrospective analysis was made on the clinical data of 85 cases with acute obstructive colorectal carcinoma treated by one-stage resection.Among the 85 cases,there were 48 cases of left colon obstruction (treatment group),and the control group included 37 cases of right colon cancer.To compare the occurrence of postoperative complications.Results 20 cases had postoperative complication in the treatment group,among which,2 cases had anastomosis fistula,4 cases of pulmonary infection,5 cases of abdominal abscess,6 cases of incision infection and 3 cases of intestinal adhesion.In control group,there were 15 cases had complication,among which,1 case had anastomosis fistula,3 cases of pulmonary infection,3 cases of abdominal abscess,5 cases of incision infection and 3 cases of intestinal adhesion.There was no significant difference in incidence rate of complication between two groups (P ＞ 0.05).Conclusion One stage resection in the treatment of left colon cancer with acute obstruction is safe and feasible.

Objective To explore the efficacy of surgery in the treatment of hepatolithiasis .Methods The clinical data of 98 patients with hepatolithiasis treated with different surgical procedures were retrospectively anan -lyzed,there were 91 cases transhepatic cholangiolithotomy treatment and 7 cases hepatolobectomy .Results 25 cases were found residual stone after operation .Recurrence calculus(10 cases),liver abscess(2 cases),and complicated by bile duct carcinoma(4cases) were found in following -up.2 cases were dead.The total effective rate was 97.96%. Conclusion Correct operation methods of calculus of intrahepatic duct was the key of reduction residual stone after operation.Resection extra-lateral lobe and choledchoscope are main means of reduction residual stone after opera -tion.

Objective To explore the levels of leptin(LEP) and soluble leptin receptor (sOB‐R) in breast cancer patients′ser‐um ,and to discuss the relationship between LEP ,sOB‐R ,free leptin index(FLI) and the patients′clinical pathologic features .Meth‐ods 70 serum specimens of breast cancer patients who confirmed by pathological diagnosis were collected before the surgery ,the serum of benign breast disease group(n=50) and normal group(n=50) were also collected as control .The levels of LEP and sOB‐Rinserumweredetected,andtheresultafterbodymassindex(BMI)correctionwereanalyzed.Finally,therelationshipbetweenthe expression of LEP ,sOB‐R and clinical pathologic features were analyzed .Results The serum level of LEP in breast cancer group was highly increased than the other two groups (P<0 .05) ,and sOB‐R was reduced(P<0 .05) .After BMI correction ,LEP was still highly increased(P<0 .05) ,but sOB‐R was no significant difference (P>0 .05) .The level of LEP in the postmenopausal breast cancer patients were highly increased than menopause patients (P>0 .05) ,and the expression of LEP in cancer group were signifi‐cant higher than two control groups by both postmenopausal and menopause (P>0 .05) .The result suggested the serum level of LEP and FLI are associated with pTNM stages and lymph node metastases (P<0 .05) ,and elevated level of LEP in postmenopausal patients had differences in pTNM stages and lymph node metastases (P< 0 .05) .Conclusion The serum LEP level and the FLI may be potential indicators to evaluate the prognosis of the patient with breast cancer .The serum LEP may promoted the process of the postmenopausal patients of breast cancer .