Development of General Practice in Communities From the Perspective of Supply and Demand / 中国医学科学院学报

Objective To put forward suggestions for improving the scheme of general practice for functional communities from the perspective of supply and demand,guide the efficient use of the resources of general practice by the communities,and incorporate the general practice of communities into hierarchical diagnosis and treatment management. Methods In July 2021,stratified random sampling was employed to conduct the questionnaire surveys of the young and middle-aged (demand side) and the general practitioners (supply side),respectively.SPSS 20.0 was used for data analysis. Results The two sides had the same cognition about the main reasons for not signing a contract with a family doctor,which were the lack of knowledge about general practitioners and the lack of face-to-face communication opportunities.They had the same response about the form of services,with high acceptance of medical services via WeChat,outpatient consultation,and the internet.There were differences in service content between the two sides.The top three demands of the young and middle-aged were appointment registration and referral in superior hospitals,medication guidance,and massage,acupuncture,and moxibustion.The top service self-rated by general practitioners was personalized guidance and report interpretation of physical examination,and the bottom was massage,acupuncture,and moxibustion. Conclusions The general practice varies between the demand and supply sides.General practitioners should be encouraged to enter and learn functional communities and provide personalized services,thus improving the general medical service in functional communities.

Analysis of Trio Half Sibling Testing / 法医学杂志

OBJECTIVES@#To establish an analytical method for half sibling testing involving common three relatives' participation.@*METHODS@#Based on the half sibling testing scenarios with the known biological mother, grandfather or uncle, and two unidentified controversial half siblings participating, two opposing hypotheses were set. Lineage reconstruction according to Mendel's law of heredity was carried out, and the calculation formula of the half sibling kinship index was derived. Verification of actual cases was carried out and the results were compared with duo half sibling testing.@*RESULTS@#In the scenarios of the known biological mother, grandfather and uncle participating in half sibling testing, the kinship calculation formulae of 54, 91 and 99 genotype combinations for kinship index calculation were deduced respectively. The actual cases showed higher kinship indexes in trio half sibling testing compared with duo half sibling testing.@*CONCLUSIONS@#It is beneficial to obtain more genetic information for family reconstruction and improvement of the strength of genetic evidence for half sibling testing by adding known relatives.

Evaluation of Detection Efficiency for Trio Full Sibling Testing / 法医学杂志

OBJECTIVES@#To study the detection efficiency of trio full sibling with another known full sibling reference added under different number of autosomal STR typing systems.@*METHODS@#Based on 43 detection systems consisting of 13 to 55 representative autosomal STR loci, 10 000 true families (full sibling group) and 10 000 false families (unrelated individual group) were randomly simulated. The full sibling index (FSI) was calculated based on the method of family reconstruction. The cumulative sibling relationship index (CFSI) of 0.000 1 and 10 000 were used as the evaluation thresholds, and the detection efficiency parameters were calculated and compared with the identification of the duo full sibling testing.@*RESULTS@#With the increasing number of STR loci, the error rate and inability of judgement rate gradually decreased; the sensitivity, specificity, correct rate of judgment and other parameters gradually increased, and the system efficiency gradually improved. Under the same detection system, trio full sibling testing showed higher sensitivity, specificity, system efficiency and lower inability of judgement rate compared with duo full sibling testing. When the system efficiency was higher than 0.85 and inability of judgement rate was less than 0.01%, at least 20 STRs should be detected for trio full sibling testing, which was less than 29 STRs required by duo full sibling testing.@*CONCLUSIONS@#The detection efficiency of trio full sibling testing is superior to that of duo full sibling testing with the same detection system, which is an effective identification scheme for laboratories with inadequate detection systems or for materials with limited conditions.

Methods and Research Hotspots of Forensic Kinship Testing / 法医学杂志

Kinship testing is widely needed in forensic science practice. This paper reviews the definitions of common concepts, and summarizes the basic principles, advantages and disadvantages, and application scope of kinship analysis methods, including identity by state (IBS) method, likelihood ratio (LR) method, method of moment (MoM), and identity by descent (IBD) segment method. This paper also discusses the research hotspots of challenging kinship testing, complex kinship testing, forensic genetic genealogy analysis, and non-human biological samples.

Baseline survey of psychosocial factors levels and their health effects in a cohort study of natural gas field workers / 中华劳动卫生职业病杂志

Objective: To investigate the level of psychosocial factors in workplace and their health effects among workers in a natural gas field. Methods: A prospective and open cohort of natural gas field workers was established to study the level of workplace psychosocial factors and their health effects, with a follow-up every 5 years. In October 2018, a cluster sampling method was used to conduct a baseline survey of 1737 workers in a natural gas field, including a questionnaire survey on demographic characteristics, workplace psychosocial factors and mental health outcomes, physiological indicators such as height and weight, and biochemical indicators such as blood routine, urine routine, liver function and kidney function. The baseline data of the workers were statistically described and analyzed. The psychosocial factors and mental health outcomes were divided into high and low groups according to the mean score, and the physiological and biochemical indicators were divided into normal and abnormal groups according to the reference range of normal values. Results: The age of 1737 natural gas field workers was (41.8±8.0) years old, and the length of service was (21.0±9.7) years. There were 1470 male workers (84.6%). There were 773 (44.5%) high school (technical secondary school) and 827 (47.6%) college (junior college) graduates, 1490 (85.8%) married (including remarriage after divorce), 641 (36.9%) smokers and 835 (48.1%) drinkers. Among the psychosocial factors, the detection rates of high levels of resilience, self-efficacy, colleague support and positive emotion were all higher than 50%. Among the mental health outcomes evaluation indexes, the detection rates of high levels of sleep disorder, job satisfaction and daily stress were 41.82% (716/1712), 57.25% (960/1677) and 45.87% (794/1731), respectively. The detection rate of depressive symptoms was 22.77% (383/1682). The abnormal rates of body mass index (BMI), triglyceride and low density lipoprotein were 46.74% (810/1733), 36.50% (634/1737) and 27.98% (486/1737), respectively. The abnormal rates of systolic blood pressure, diastolic blood pressure, uric acid, total cholesterol and blood glucose were 21.64% (375/1733), 21.41% (371/1733), 20.67% (359/1737), 20.55% (357/1737) and 19.17% (333/1737), respectively. The prevalence rates of hypertension and diabetes were 11.23% (195/1737) and 3.45% (60/1737), respectively. Conclusion: The detection rates of high level psychosocial factors in natural gas field workers are high, and their effects on physical and mental health remain to be verified. The establishment of a cohort study of the levels and health effects of psychosocial factors provides an important resource for confirming the causal relationship between workplace psychosocial factors and health.

Advances in Hormone Replacement Therapy for Adult Adrenal Insufficiency / 罕见病研究

Adrenal insufficiency is a disease characterized by insufficient secretion of adrenocortical hormones, usually treated with glucocorticoid replacement therapy. The routine drugs have two forms-short-acting and long-acting. The shorter one should be taken 2-3 times a day resulting hormone level of patients fluctuating greatly within a day. Although long-acting drugs reduce the frequency of administration, it is easy to lead to excessive replacement, resulting in adverse effects on metabolism. New alternative treatments for adult patients have emerged, including modified-release hydrocortisone and hydrocortisone subcutaneous infusion pumps. In this review, we briefly introduce these new therapies, emphasizing the pharmacodynamics and pharmacokinetics of the replacement, the effects on metabolism and drug safety, aiming at contributing to the future clinical practice.

Cost-benefit analysis of hepatitis B virus serological and nucleic acid testing in blood donors / 中国输血杂志

【Objective】 In an effort to prevent transfusion-transmitted hepatitis B infection, universal HBsAg screening, HBsAg+ MP nucleic acid test(NAT) for HBV and HBsAg + individual(ID) NAT were analyzed for cost-effectiveness. 【Methods】 On the basis of screening data and the documented parameter, the number of window period infections, chronic infections and occult infections was constructed, and cost-benefit analysis was conducted. 【Results】 Of 132 208 donations, the yield rate of ID NAT for HBsAg-/DNA+ (0.11%) was significantly higher than HBsAg+ MP NAT(0.058%). Furthermore, the predicted preventing transfusion transmitted HBV cases by ID NAT is 1.25 times as that by MP-6 NAT, so did the benefits. The cost-benefit of the three screening models were 1∶63.6、1∶28.6 and 1∶53.4. 【Conclusion】 Universal HBsAg in combination with ID HBV NAT screening was the most effective among all screening strategy. It is necessary to applied HBsAg and ID HBV NAT screening for the safety of blood transfusion.

Enhancing the sensitivity of HIV DNA detection: a magnetic bead-based method / 中国输血杂志

【Objective】 To establish a magnetic bead enrichment strategy for the detection of human immunodeficiency virus deoxyribonucleic acid (HIV DNA) in peripheral blood, and to verify the improvement of the sensitivity of this method for the detection of HIV DNA in HIV infected patients after early antiretrovital treatment (ART). 【Methods】 Peripheral whole blood was collected at 4 timepoints in one ART HIV window period (WP) patient. Peripheral blood mononuclear cells (PBMCs) were isolated on a Ficoll gradient. CD4+ T lymphocytes were enriched from total PBMCs by negative sorting. HIV DNA concentration in magnetic beads enriched group and whole blood group was detected by HIV DNA detection kit. 【Results】 CD4+ T cells were isolated by magnetic beads and identified by FCM for purity at (96.4 ± 2.6)%. The viability was (95.9 ± 2.9)%, as demonstrated by trypan blue staining. The person on continued ART treatment in this study had significantly greater reduction in HIV viral load and undetectable HIV plasma RNA at follow up timepoint 4. No HIV DNA was detected in the whole blood group at all 4 timepoints. The quantitative results of HIV DNA in the CD4+ T lymphocyte group of the magnetic bead enrichment group were 73.4, 429.3, 137.1, 449.9 copies/106 CD4+ T cell′s respectively. 【Conclusion】 The magnetic bead enrichment method can be more sensitive in detecting the limit low copy HIV DNA in blood samples, and provide early confirmatory data for HIV WP infection and breakthrough infection after ART treatment.

False positive reaction of COVID-19 antibody ELISA screening: internal logic of various methods / 中国输血杂志

【Objective】 To analyze the results of different methods for reactive samples screened by the enzyme linked immunosorbent assay (ELISA) against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in blood donors. 【Methods】 From March to April 2020, a total of 8 632 blood samples in Shenzhen were screened for SARS-CoV-2 total antibodies (TAb, including IgG, IgM, IgA) in plasma using ELISA(PC group), the antibody reactivity samples and their follow up plasma samples (FC group), and samples of disease control group(DC group) from January to April 2020 were detected using the following methods: 1) ELISA method for detecting IgG, IgM, and (or without detection) TAb; 2) pseudovirus neutralizing antibody test(pVNT); 3) western blot (WB) of SARS-CoV-2 antibody. The negative control group(NC group) from February to April 2020 performed ELISA and WB testing. 【Results】 Among the 34 total antibody positive samples, 2 were positive for pVNT test, and the total antibody, IgG and WB in the initial screening and tracking testing were positive. Thereafter, it was determined to be confirmed positive. The other 2 cases were positive for pVNT test, while the samples with positive WB results were in the follow-up stage. The TAb, IgG, and pVNT results did not conform to the dynamic evolution of antibodies, and cannot be determined as confirmed positive. 【Conclusion】 The infection status of antibody reactivity samples screened by SARS-CoV-2 ELISA can be judged by the logic of pVNT, WB and the dynamic change of antibody.

Recent advances of pharmaceutical 3D printing extrusion molding technology / 药学学报

3D printing is an additive manufacturing technology with the help of digital control. Since FDA approved the first 3D printing drug in 2015, its research enthusiasm in the pharmaceutical field has been increasing year by year. In printing technology, fused deposition molding (FDM) and semi-solid extrusion (SSE) are the two most widely used extrusion molding technologies. In this review, recent advances of pharmaceutical 3D printing extrusion molding technology are reviewed from six aspects: mechanism, equipment, pharmaceutical excipients, applications, design and industrialization prospects of extrusion molding technology.

Effect of motor imagery on knee function after unicompartmental knee arthroplasty / 中国康复理论与实践

ObjectiveTo explore the effect of motor imagery (MI) on knee function after unicompartmental knee arthroplasty (UKA). MethodsFrom January to September, 2022, 32 patients underwent UKA for the first time in Xuanwu Hospital were randomly divided into control group (n = 16) and experimental group (n = 16). All the patients accepted routine rehabilitation, and the experimental group accepted MI in addition, until four weeks after discharge. They were assessed with Oxford Knee Score (OKS), Visual Analogue Scale for pain (VAS), range of motion (ROM) of knee, and Timed Up and Go Test (TUGT) before and after treatment. ResultsAll the indexes improved after treatment (|t| > 2.517, P < 0.05), except ROM in the control group; and they improved more in the experimental group than in the control group (F > 7.999, P < 0.01), except the VAS score. ConclusionMI can further improve the knee function after UKA, but do less for pain.

Application of extended reality technology for real-time navigation in clinical operation / 南方医科大学学报

OBJECTIVE@#To explore the application of extended reality (XR) technology in clinical surgeries for improving the success rate of surgeries.@*METHODS@#To assist the surgeons to better understand the location, size and geometric shape of the lesions and reduce potential radiation exposure in minimally invasive surgical navigation based on two-dimensional images, we constructed three-dimensional models based on CT data and used XR technology to achieve intraoperative navigation. An improved quaternion method was used to improve the accuracy of electromagnetic positioning, with which the system error of positioning accuracy was reduced to below 2 mm. A 5G network was used to optimize the server GPU programming algorithm, and real-time video stream coding strategy and network design were adopted to reduce data transmission jam and delay in the remote surgery network, which achieved an average delay of less than 60 ms. A Gaussian distribution deformation model was used to simulate collision detection and stress deformation of the tissues to achieve a tactile perception effect.@*RESULTS AND CONCLUSION@#The intraoperative navigation system based on XR technology allowed more accurate determination of the location of the lesions, effectively reduced the surgical risk, and avoided the risk of intraoperative radiation exposure. The low latency and high fidelity of 5G network achieved real-time interaction during the surgery to provide a technical basis for multi-terminal remote cooperative surgery. The combination of force feedback technology and XR technology enables the surgeons to conduct deep immersion preoperative planning and virtual surgery to improve the success rate of surgery and shorten the learning curve.

Effects of occupational mercury exposure on the immune function of workers / 中国职业医学

@#Objective To investigate the effects of mercury on T lymphocytes and serum immune indexes of workers with Methods occupational mercury exposure. A total of 45 workers with occupational mercury exposure were selected as the ， mercury exposure group and 47 workers without occupational mercury exposure were selected as the control group using the judgment sampling method. Cold atomic absorption spectrometry was used to detect the urinary mercury level of the two groups. （ ） +， + +， + + - + Flow cytometry was used to detect the proportion of cluster of differentiation CD 3 CD3CD4 CD3CD8 and CD3CD19 ， - （ - ） - （ - ） cells in peripheral blood and the levels of tumor necrosis factor α TNF α and interleukin 8 IL 8 in serum. The levels of （ ） ， Results immunoglobulin Ig A IgG and IgM in serum were measured by immune nephelometry. The urinary mercury level of （ ： vs ，P ） individuals in the mercury exposed group was higher than that of the control group median 92.7 13.2 μg/g Cr <0.01 . The +， + +， - + proportion of CD3 CD3CD4 CD3CD19 cells in peripheral blood and serum IgG level in the mercury exposed group （ P ）， - - （ P ） decreased all <0.05 and the serum TNF α and IL 8 levels increased all <0.01 compared with the control group. Urinary - + mercury level was negatively correlated with the proportion of CD3CD19 cells in peripheral blood and serum IgG level in the ［ （r） ， ， P ］， study subjects Spearman correlation coefficient S were −0.21 and −0.31 respectively all <0.05 and positively - - （r ， ， P ） ， correlated with serum TNF α and IL 8 levels S were 0.36 and 0.39 respectively all <0.05 . However the urinary mercury （ P ）， +， + +， level was neither correlated with IgA and IgM levels in serum all >0.05 nor with the proportion of CD3 CD3CD4 + + （ P ） Conclusion CD3CD8 cells in peripheral blood all >0.05 . Occupational exposure to mercury can lead to abnormal ， changes in peripheral blood T lymphocyte subsets B lymphocytes and serum immune factors in workers. The mercury load of occupational mercury exposure workers may impact their immune function.

Value of octreotide suppression test in predicting the efficacy of long-acting somatostatin receptor ligands in pituitary GH adenomas / 中华内分泌代谢杂志

Objective:To explore the value of octreotide suppression test(OST) in predicting the efficacy of somatostatin receptor ligands(SRLs) in the treatment of active acromegaly.Methods:The clinical data of 76 patients with active acromegaly from 2011 to 2020 was retrospectively analyzed. OST was carried out as follows: After an overnight fasting and baseline sampling of growth hormone(GH), 100 μg octreotide was subcutaneously injected, and sampling for GH was obtained every 2 hours for 8 hours. All patients were treated with SRLs for at least 3 months. A good GH response is defined as a post-treatment random GH<1 μg/L or >80% fall compared with the baseline GH. A good insulin-like growth factor Ⅰ(IGF-Ⅰ) response is defined as IGF-Ⅰ<1.3 upper limit of normal(ULN) or >50% reduction compared with the baseline. If both GH and IGF-Ⅰ fulfill the criteria of a good response, it is defined as a good GH and IGF-Ⅰ response.Results:The baseline level of GH during OST was 15.00(6.38, 34.20) μg/L, the median time to reach the nadir GH was(3.65±1.65) hours, and the nadir GH level was 1.47(0.50, 4.19) μg/L. The median GH suppression rate was 89.12%(72.71%, 95.09%). When the cutoff value of GH suppression rate in predicting a good GH response was 89.32%, the area under the curve(AUC) was 0.74, with a sensitivity of 81.80% and specificity of 66.00%. When the cutoff value of GH suppression rate in predicting a good IGF-Ⅰ response was 93.14%, the AUC was 0.64, with a sensitivity of 50.00% and specificity of 75.60%. When the GH suppression rate was 90.71%, the AUC was 0.78, with the sensitivity of 83.30% and specificity of 70.00% in predicting a good GH and IGF-Ⅰ response. Compared with GH/IGF-Ⅰ non-responders, GH/IGF-Ⅰ responders displayed lower nadir GH during OST, higher GH suppression rate and IGF-Ⅰ reduction rate, and lower ratio of IGF-1 to ULN( P<0.05). Conclusion:GH suppression rate during the OST is a valuable predictor to evaluate the efficacy of SRLs in patients with acromegaly, with the highest sensitivity and specificity when the cutoff value is 90.71%.

Changes of mRNA N6-methyladenosine methylation in blood of patients with Alzheimer's disease / 中华行为医学与脑科学杂志

Objective:To explore the changes of mRNA N6-methyladenosine methylation level and methyltransferase-like 3 (METTL3) and demethylase fat mass and obesity-associated (FTO) in the blood of patients with Alzheimer's disease (AD) compared with normal controls.Methods:From January 2020 to June 2021, totally 40 AD patients treated in the outpatient and inpatient department of Neurology of the Affiliated Hospital of Jining Medical University were selected as the patient group, and 40 healthy volunteers as the control group. The blood samples were collected to extract plasma and peripheral blood mononuclear cells for enzyme-linked immunosorbent assay (ELISA), Western blot (WB), quantitative real-time PCR (qPCR) and m6A methylation quantification experiments respectively to detect the methylation levels of METTL3, FTO and m6A. The data were analyzed by SPSS 23.0 statistical software for t-test. Results:The plasma concentrations of METTL3 and FTO protein in AD group were lower than those in control group (METTL3: (22.33±3.01)ng/mL, (25.63±1.70)ng/mL, t=6.055, P<0.01; FTO: (63.51±4.95)pg/mL, (69.60±4.60)pg/mL, ( t=5.704, P<0.01). The band gray values of METTL3 and FTO protein in blood cells in AD group were lower than those in control group (METTL3: 0.399 5±0.028 7, 0.676 6±0.053 3, t=7.935, P=0.001; FTO: 0.439 4±0.017 8, 0.782 6±0.087 6, t=6.652, P=0.003). The expression levels of METTL3 and FTO in blood cell RNA in AD group were lower than those in control group (METTL3: 0.387 8±0.020 3, 1.010 0±0.177 0, t=6.041, P=0.004; FTO: 0.442 8±0.037 1, 1.003 0±0.090 4, t=9.931, P=0.001). The levels of m6A in blood cell RNA in AD group were lower than those in control group((0.000 571±0.000 167)%, (0.002 514±0.001 284)%, t=6.041, P=0.004). Conclusion:The levels of METL3, FTO and m6A methylation are down-regulated in the plasma and peripheral blood mononuclear cells of patients with AD, indicating that there is a certain association between mRNA N6-methyladenosine methylation and AD.

Danzhi Xiaoyaosan-containing Serum Reverses Energy Metabolic Reprogramming of MDA-MB-231 Breast Cancer Cells / 中国实验方剂学杂志

ObjectiveTo observe the effect of Danzhi Xiaoyaosan-containing serum on MDA-MB-231 breast cancer cells， and to find out whether the action mechanism is related to its intervention in energy metabolism. MethodThirty six-week-old male SD rats were randomly divided into the blank group， Danzhi Xiaoyaosan （8.99 g·kg-1） group， and Xihuangwan （0.55 g·kg-1） group. The serum was isolated after drug intervention for seven days. The cell viability was detected by methyl thiazolyl-tetrazolium （MTT） assay， the cell cycle by flow cytometry， and the apoptosis by Annenxin V/propidium iodide （PI） double staining. Following the determination of intracellular glucose content using the glucose testing kit， the expression of glucose transporter 1 （GLUT1） was measured by immunofluorescence staining. Seahorse XFe cell energy metabolism analyzer was used to detect the extracellular acidification rate （ECAR） and oxygen consumption rate （OCR）. The expression levels of hexokinase 2 （HK2）， pyruvate kinase M2 （PKM2）， and lactate dehydrogenase A （LDHA） were assayed by Western blot. ResultCompared with the blank group， Danzhi Xiaoyaosan-containing serum inhibited the proliferation of MDA-MB-231 cells， with the best effect observed after intervention with 15% Danzhi Xiaoyaosan-containing serum for 48 h （P<0.01）， blocked the MDA-MB-231 cells in G0/G1 phase（P<0.01）， and down-regulated the GLUT1 expression， basal glycolysis， glycolysis capacity， glycolytic reserve， basal respiration， adenosine triphosphate （ATP） production， spare respiratory capacity（P<0.01）， as well as the protein expression of HK2， PKM2， and LDHA in MDA-MB-231 cells（P<0.05，P<0.01）. ConclusionDanzhi Xiaoyaosan-containing serum inhibits MDA-MB-231 cell proliferation， promotes apoptosis， and induces cell cycle arrest， which may be related to its reversal of energy metabolic reprogramming in MDA-MB-231 cells.

Effects of integrated orthopedic rehabilitation pathway on motor function after total knee arthroplasty / 中国康复理论与实践

@#Objective To study the effects of integrated orthopedic rehabilitation pathway on motor function in six months after total knee arthroplasty (TKA), including pain, stiffness, range of motion and muscle strength, etc. Methods From March, 2016 to March, 2019, 180 patients who underwent TKA and treated with integrated orthopedic rehabilitation pathway were enrolled. Age, gender, operation time, time of follow-up, the scores of Hospital for Special Surgery-Knee Scale (HSS-KS) and Western Ontario and McMaster Universities osteoarthritis index (WOMAC) at preoperative/postoperative/one-month after operation/three-month after operation/six-month after operation time points were collected. The sub items, such as muscle strength, range of motion, flexion deformity, pain, stiffness, functional difficulty were primarily focused on. Results A total of 42 patients were followed up for three months and 22 patients were followed up for six months. There was no significant difference in the scores of HSS-KS and WOMAC before and after operation (P > 0.05). Within three months after operation, the HSS-KS scores gradually increased (P < 0.05) and the WOMAC scores gradually decreased (P < 0.05). The active knee flexion range of motion and knee extensor muscle strength scores of HSS-KS significantly decreased after operation (P < 0.05), and gradually recovered one month and three months after operation (P < 0.05). The flexion deformity scores of HSS-KS increased after operation (P < 0.05), decreased one month after operation (P < 0.05), and got a trend of incensement again three months after operation. The pain score of WOMAC decreased continuously within three months after operation (P < 0.05); the stiffness score of WOMAC did not change after operation (P > 0.05), decreased significantly one month after operation (P < 0.05), and did not change three months after operation (P > 0.05). The degree of functional difficulty of WOMAC decreased after operation (P < 0.05), and improved continuously within six months after operation (P < 0.05). Conclusion The overall function after TKA shows a trend of improvement within three months, and there is no obvious improvement from three to six months after operation. The flexion deformity score showed a downward trend in one month after operation, and it could be improved again after strengthening rehabilitation, which needs more attention in the postoperative rehabilitation.

Mechanisms of Acupuncture in Improving Alzheimer's Disease Caused by Mitochondrial Damage / 中国结合医学杂志

Alzheimer's disease (AD) is one of the most common neurodegenerative diseases among the elderly and it accounts for nearly 80% of all dementias. The pathogenesis of AD is complicated and enigmatic thus far. The mitochondrial cascade hypothesis assumes that mitochondrial damage may mediate, drive, or contribute to a variety of AD pathologies and may be the main factor in late-onset AD. Currently, there are no widely recognized drugs able to attenuate mitochondrial damage in AD. Notably, increasing evidence supports the efficacy of acupuncture for improving the mitochondrial structure and protecting mitochondrial functions in AD. This review reports the mechanisms by which acupuncture regulates mitochondrial dynamics, energy metabolism, calcium homeostasis and apoptosis. In conclusion, these findings suggest that AD mitochondrial dysfunction represents a reasonable therapeutic target and acupuncture could play a significant role in preventing and treating AD.

UHPLC-Q-Exactive Orbitrap MS/MS-based rapid identification of chemical components in substance benchmark of Kaixin San / 中国中药杂志

Ultra-performance liquid chromatography-quadrupole-electrostatic field Orbitrap mass spectrometry(UHPLC-Q-Exactive Orbitrap MS/MS) was used for rapid identification of the chemical components in Kaixin San substance benchmark. The gradient elution was performed through a Waters ACQUITY~(TM) BEH C_(18) column(2.1 mm×150 mm, 1.7 μm) with water-acetonitrile as mobile phase, a column temperature of 30 ℃, a flow rate of 0.3 mL·min~(-1), and a sample size of 1 μL. The scanning was performed in the negative ion mode. The complex component groups in Kaixin San substance benchmark were quickly and accurately identified and clearly assigned based on the comparison of the retention time and MS data with those of the reference substance as well as the relative molecular weight of the same or similar components in the mass spectrum database and literature. A total of 77 compounds were identified, including 26 saponins, 13 triterpenoid acids, 20 oligosaccharide esters, 5 xanthones, and 13 other compounds. The qualitative method established in this study can systematically, accurately, and quickly identify the chemical components in Kaixin San substance benchmark, which can provide a basis for the further analysis of its active components in vivo and the establishment of its quality control system.

Results analysis of unexpected antibody screening for blood donors and cost comparison of two detection modes / 中国输血杂志

【Objective】 To establish a routine screening method for unexpected antibodies of blood donors, analyze the results of centralized screening for unexpected antibody of blood donors in the blood center, and compare the cost of centralized and decentralized screening modes. 【Methods】 A total of 35 591 blood donors were screened for unexpected antibodies from March 31, 2021 to July 31, 2021, using microcolumn gel method. Unexpected antibody screening reactive samples were further confirmed by the Transfusion Research Institute of Shenzhen Blood Center, and the demographic characteristics were further determined through the analysis of unexpected antibody positive population. The direct cost and indirect cost of centralized and decentralized unexpected antibody screening mode were compared. 【Results】 Forty unexpected antibody positive samples were confirmed in Shenzhen, with the positive rate at 0.11%(40/35 591), among which MNS, Rh and Lewis system accounted for 35% (14/40), 32.5% (13/40) and 17.5% (7/40), respectively. Males and females accounted for 45% (18/40) and 55% (22/40), respectively (P0.05). Unexpected antibody screening in a centralized way saved about 1.16 million yuan per year. 【Conclusion】 It is necessary to carry out unexpected antibody screening for all blood donors, and centralized screening is more economical than decentralized screening.