Objective To explore the effects of electroacupuncture at Baihui (DU20) acupoint on learning and memory and its possible mechanism through the expression of brain-derived neurotrophic factor (BDNF) in APP/PS1 double-transgenic mice. Methods 30 female APP/PS1 double transgenic mice were randomly divided into model group, DU20 group and non-acupoint group, and 10 wild type mice con-sisted of wild group. DU20 group received electroacupuncture at Baihui and the non-acupoint group received electroacupuncture at non-acu-point for 28 days. Learning and memory was tested by Morris water maze. Deposition ofβ-amyloid (Aβ) peptide was determined by immu-nohistochemical staining. The expression of BDNF in cortex was examined by RT-PCR and Western blotting. Results Compared with the model group, DU20 group ameliorated the learning and memory ability of APP/PS1 double-transgenic mice (P<0.05), decreased the deposi-tion of Aβpeptide (P<0.05) and upregulated the gene and protein levels of BDNF (P<0.01). There was no significant difference between the model group and non-acupoint group (P>0.05). Conclusion Electroacupuncture at DU20 acupoint could ameliorate learning and memory in APP/PS1 double-transgenic mice. The mechanism may be related to increase the expression of BDNF and decrease the deposition of Aβ.

Objective To compare echocardiographic parameters of left ventricular function in mice under anaesthesia with those in conscious condition.Methods Forty mice were randomized to anesthetic group and nonanesthetic group,all mice were examined in conscious state at baseline,then anesthetic group had intraperitoneal injection of ketamine and xylazine,the non-anesthetic group received intraperitoneal injection of the same volume of saline.Echocardiography was performed every 10min and every 15min after 30min time point until 60min.ResultsAnesthetic agent strikingly brought down heart function of mice.The nadir of heart rate,fractional shortening(FS),cardiac output(CO) occurred during 10-20min period and could not be restored to normal value at baseline even after 60min.Left ventricular end-diastolic diameter(LVEDD) and left ventricular end-systolic diameter(LVESD) increased to maximum at 20min point,then decreased to value at baseline until 60min.LVEDD could be restored to baseline value while LVESD remained larger than baseline at 60min.Coefficient of variation of echocardiographic measurement in non-anesthetic group was smaller than those in anethetic group.FS and heart rate of all mice were highly corrrelated by regression analysis(r=(0.884),P

Objective To investigate the current situation of quality of care for people with disabilities and the related factors. Methods In November, 2015, 399 disabled persons from five special service institutions in Hubei, China were conveniently sampled, and investigated with the Chinese version of Quality of Care and Support (QOCS) for people with disability scale and demographic questionnaire. Results The total score of QOCS was (38.11±6.24), and the proportion of total score in the dimensions of caring provision, caring environment and caring information were more than 70%. The score of QOCS was various with the age, domicile, employment, medical insurance, monthly household expenditure and expenditure for food of the people with disabilities, and the age (β=0.06, P<0.01) and medical insurance (β=-0.850, P<0.001) were the independent factors related with the score of QOCS. Conclusion People with disabilities self-reportedly satis-fied in the quality of care in Hubei, and it can be improved from the increase of medical insurance level.

Post-stroke cognitive impairment (PSCI) refers to a clinical syndrome that occurs after a stroke and meets the diagnostic criteria for cognitive impairment, lasting for more than 6 months, and seriously affecting the daily life of patients. The complement system has been confirmed to be associated with PSCI. This article reviews the correlation between complement system and PSCI, as well as the possibility of complement system as an intervention target for PSCI.

Objective:To investigate the mechanism of IL-6 affecting the expression of CD73 on human placenta-derived mesenchymal stem cells (hPMSCs) and regulating their migration, adhesion and proliferation.Methods:Flow cytometry (FCM) and Western blot were used to analyze the effects of exogenous IL-6 or IL-6 secreted by hPMSCs on the expression of CD73 on hPMSCs. The influence of IL-6 on the phosphorylation of signal transducer and activator of transcription 3 (p-STAT3) in hPMSCs was detected by monoclonal antibody blocking test and Western blot. Real-time cellular analysis (RTCA) was used to analyze the changes in the migration, adhesion and proliferation of hPMSCs after knockdown of CD73 expression or APCP pretreatment.Results:FCM and Western blot showed that both exogenous and autocrine IL-6 from hPMSCs promoted the expression of CD73 on hPMSCs ( P<0.001, P<0.01). Moreover, CD73 expression decreased significantly with the presence of IL-6R inhibitor ( P<0.01). IL-6 could up-regulate the levels of both p-STAT3 and CD73 in hPMSCs ( P<0.05, P<0.01), while CD73 expression decreased after adding STAT3 inhibitor ( P<0.01). RTCA showed that knockdown of CD73 expression on hPMSCs significantly inhibited the adhesion and proliferation ability of hPMSCs( P<0.01, P<0.05), but promoted the migration ability of hPMSCs ( P<0.05). Similarly, inhibiting the hydrolase activity of CD73 on hPMSCs by APCP also resulted in a significant decrease in the adhesion and proliferation capacities of hPMSCs, and an increase in the migration capacity of hPMSCs ( P<0.05). Conclusions:IL-6 enhanced the expression of CD73 on hPMSCs via the JAK/STAT3 pathway, thus affecting the migration, adhesion and proliferation of hPMSCs.

Objective:To detect the levels of γ-glutamyl transferase (GGT) in the amniotic fluid of normal pregnancies at 19-23 +6 gestational weeks and to analyze the changes in GGT level with gestational age. Methods:This study retrospectively collected the amniotic fluid supernatant from 383 singleton pregnant women (102, 103, 82, 68 and 28 cases at 19-19 +6, 20-20 +6, 21-21 +6, 22-22 +6, 23-23 +6 weeks of gestation, respectively) who underwent amniocentesis for prenatal diagnosis but had normal genetic diagnosis results in Cheeloo Hospital of Shandong University from January 2021 to September 2022. The levels of GGT in the amniotic fluid supernatant were tested and the statistical parameters including xˉ± s, min-max, median ( M), P1, P2.5, P5, P95, P97.5 and P99 values of GGT levels at each gestational week were calculated. GGT were non-normal data and converted into natural logarithms (lnGGT), and a least square linear regression equation was established to analyze the relationship between lnGGT and gestational week. Results:At 19-19 +6, 20-20 +6, 21-21 +6, 22-22 +6, and 23-23 +6 gestational weeks, the xˉ± s of amniotic fluid GGT were (385.8±235.7), (331.8±219.4), (253.7±197.9), (226.7±166.4), and (155.3±96.8) U/L, and the weekly declines were 14.0%, 23.5%, 10.6%, and 31.5%, respectively; the M values were 311.0, 288.0, 199.0, 160.5, and 105.5 U/L, and the weekly declines were 7.4%, 30.9%, 19.3%, and 34.3%, respectively; the P1- P99 were 67.1-1 404.5, 63.2-1 189.1, 36.0-849.8, 44.0-787.3, and 32.0-375.6 U/L, respectively. lnGGT was negatively correlated with gestational age ( R 2=0.148, P<0.001). Conclusions:In normal pregnancies at 19-23 +6 gestational weeks, GGT levels in amniotic fluid decrease with gestational age. Therefore, gestational age should be considered when establishing the reference value for amniotic fluid GGT in normal pregnancies.

Objective To explore the application of the awake anesthesia and intra-operative cortico-subcortical electro-stimulation in the surgery for patients with lesions in eloquent areas.Methods Retrospective analysis of 10 patients with lesions in eloquent area,admitted to our hospital from May 2011 to December 2013,was performed.Neuroimaging was used to assess the location of the lesions before surgery,neuron-navigation was used in the craniotomy,awake anesthesia and intra-operative cortico-subcortical electro-stimulation in the surgery of lesions in eloquent areas was performed; and then,total excision of the lesions was adopted.Results Specific motor response was monitored in all the 10 patients accepted cortico-subcortical electro-stimulation,which was matched with that from anterior central gyrus; 5 of them also performed electrophotoluminescence in the language area could be detected with positive reactions.In all 10 patients,total resection was achieved in 8 and subtotal excision in 2.Two patients had transient language dysfunction after operation and got improvement within one week,and recovered to the normal state in three weeks.Myodynamia transitorily decreased in 3 patients after operation and started recovery in one week and achieved the normal state in three month.Perpetual aphasis was noted in all the patients.Conclusion Awake anesthesia and intraoperative direct electrical stimulation were helpful to distinguish lesions from eloquent area,which is a reliable,precise,and safe eloquent area location method; maximum resection of the lesions and minimal damage to the eloquent area can be achieved and the life quality of patients can be improved.

Objective:To investigate the mechanism of human placenta derived mesenchymal stem cells (hPMSCs) in the inhibition of TNF-α secretion in CD4 + IFN-γ + T cells (Th1) through CD73/nuclear factor-erythroid 2-related factor 2(Nrf2) pathway to reduce liver injury in mice with graft versus-host disease (GVHD). Methods:Flow cytometry (FCM) was used to analyze the expression of TNF-α in Th1 cells and the expression of PD-1 on CD4 + IFN-γ + TNF-α + T cells (TNF-α + Th1 cells) isolated from peripheral blood and liver tissues of mice with GVHD. Hematoxylin-hosin (HE) staining, Masson staining and immunofluorescence staining were used to observe the pathological changes in liver tissues of GVHD mice in each group. HE staining was also used to observe the pathological changes in skin and lung tissues of GVHD mice. A nonconditional protocol to induce the differentiation of peripheral blood mononuclear cells (PBMCs) into Th1 cells in vitro was established. The proportion of TNF-α + Th1 cells and the mean fluorescence intensity (MFI) of Nrf2 and phosphorylated nuclear factor-kappa B (p-NF-κB) in this T cell subgroup were detected. Results:Compared with the normal control group, the proportion of TNF-α + Th1 cells and the expression of PD-1 on this T cells in peripheral blood and liver tissues of mice in the GVHD high group increased significantly ( P<0.01). The proportion of TNF-α + Th1 cells in peripheral blood and liver tissues decreased after hPMSCs treatment ( P<0.001), but the expression of PD-1 on this T cell subset was promoted in peripheral blood and liver tissues ( P<0.01, P<0.001). However, the intervention effects of shCD73 on TNF-α + Th1 cells in peripheral blood and liver tissues were significantly weakened ( P<0.05, P<0.01). Liver histopathological analysis showed that the proportion of TNF-α + Th1 cells in liver was positively correlated with Suzuki′s score, collagen area and the MFI of α-SMA ( P<0.001). Similarly, histopathological analysis of skin and lung tissues also showed that the proportion of TNF-α + Th1 cells in peripheral blood was positively correlated with skin Marina score and lung Shukai Qiao score ( P<0.001). In vitro experiment also showed that hPMSCs down-regulated the proportion of TNF-α + Th1 cells ( P<0.01) and up-regulated the expression of PD-1 on them ( P<0.05). Further analysis showed that hPMSCs could enhance the MFI of Nrf2 ( P<0.05) and weaken the MFI of p-NF-κB ( P<0.01) in TNF-α + Th1 cells. Conclusions:hPMSCs could up-regulate the expression of PD-1 through CD73/Nrf2 pathway to inhibit the formation of TNF-α + Th1 cells, thereby alleviating liver injury in GVHD mice.

Objective:To identify and characterize one Yokenella regensburgei strain(designated as CXLZQ123) isolated from a case of perionychial abscess. Methods:Strain CXLZQ123 was isolated from a patient with periungual abscess at the Dermatology Department of San County Central Hospital in June 2, 2023. The strain was initially identified through morphological and biochemical tests, followed by mass spectrometry identification, 16S rRNA sequencing and whole-genome sequencing. MEGA 11.0 was used to compare and analyze the strain′s genetic relationship with relevant species in GenBank, and a phylogenetic tree was constructed based on genetic distance to analyze its genetic evolution. Meanwhile, the average nucleotide identity between its genome and similar strains were compared.Results:The strain was identified as a Gram-negative rod. MicroScan WalkAway biochemical tests indicated that the strain was either Yokenella regensburgei (91.47%) or Hafnia alvei (8.53%). MALDI-TOF mass spectrometry confirmed it as Yokenella regensburgei. Based on 16S rRNA gene sequence analysis, the strain showed the highest similarity(99.37%) to CIP 105435 (sequence number NR_104934.1). The 16S rRNA gene sequence of the isolated strain Yokenella regensburgei was submitted to the National Center for Biotechnology Information (NCBI) with the GenBank sequence number of OR230248.1. The whole-genome of CXLZQ123 were sequenced and uploaded (NCBI, SRA sequence number: SRR26510420). The average nucleotide identity between CXLZQ123 and Yokenella regensburgei strains W13 and UU2206353 were 98.82% and 99.04%, respectively. Conclusions:Through morphological observation, biochemical identification, mass spectrometry identification, 16S rRNA and whole-genome sequencing, this pathogenic strain is identified as Yokenella regensburgei. This rare bacterium is sensitive to most detected antibiotics. This study provides diagnostic and treatment experience for Yokenella regensburgei-related infections.

【Objective】 To analyze the clinical and pathological characteristics of mucinous tubular and spindle cell carcinoma （MTSCC） in the kidney so as to evaluate the value of radiotherapy in local treatment of refractory MTSCC. 【Methods】 A case of MTSCC with recurrent recurrence and metastasis was reported， and the existing literature on MTSCC was reviewed and analyzed to explore the value of radiotherapy in the treatment of MTSCC. 【Results】 After three operations， postoperative pathology of the patient showed mucinous tubular and spindle cell carcinoma of the kidney. Radiotherapy was performed in the first recurrence area， and long-term follow-up in the tumor bed area showed no recurrence. 【Conclusion】 MTSCC， a rare renal epithelial tumor， has the low-grade malignance in most cases， and rarely recurs and has metastasis. This patient had repeated recurrence and metastasis before surgery， but after tumor bed radiotherapy after the first recurrence no lesion was found， suggesting that radiotherapy plays a certain role in preventing local recurrence. It is necessary to further explore the value of radiotherapy in the treatment of MTSCC.