Evaluation of the relationship between the attachment type of lateral pterygoid muscle and the position of temporomandibular joint disc in patients with temporomandibular joint disorders based on wireless amplified MRI detector high resolution imaging / 中华口腔医学杂志

Objective: To explore the correlation between the attachment type of lateral pterygoid muscle (LPM) and the position of temporomandibular joint (TMJ) disc in patients with temporomandibular disorders (TMD) by using wireless amplified magnetic resonance imaging detector (WAND) coupled with conventional head and neck joint coil for high resolution imaging of TMJ. Methods: Eighty-five patients with TMD diagnosed by oral and maxillofacial surgeons of Guizhou Provincial People's Hospital from October 2019 to January 2022 were collected. A total of 160 TMJ were included. There were 16 males and 69 females, aged (32.7±14.2) years. All patients were scanned with open, closed oblique sagittal and coronal WAND coupled head and neck coils with bilateral TMJ. Based on TMJ and LPM high resolution imaging, to explore the correlation between LPM attachment types and the position of TMJ disc in TMD patients, and to evaluate the potential clinical value of LPM attachment types in TMD patients. χ2 test and Pearson correlation analysis were used to evaluate the correlation between LPM attachment type and TMJ disc location. Results: There were three types of LPM attachment: type Ⅰ in 51 cases [31.9% (51/160)], type Ⅱ in 77 cases [48.1% (77/160)] and type Ⅲ in 32 cases [20.0% (32/160)]. There was a significant correlation between the type of LPM attachment and the position of articular disc (χ2=28.20, P=0.002, r=0.776). There was no statistical significance between the type of LPM attachment and the reversible displacement of articular disc (χ2=0.24, P=0.887, r=0.825). Conclusions: There is a correlation between the attachment type of LPM and the position of the disc in TMD patients. WNAD coupled with conventional head and neck joint coil TMJ high resolution scan can provide reliable imaging evidence for TMD patients in evaluating the type of LPM attachment and the location of disc.

Endothelial METRNL determines circulating METRNL level and maintains endothelial function against atherosclerosis

METRNL is a recently identified secreted protein with emerging functions. This study is to find major cellular source of circulating METRNL and to determine METRNL novel function. Here, we show METRNL is abundant in human and mouse vascular endothelium and released by endothelial cells using endoplasmic reticulum-Golgi apparatus pathway. By creating endothelial cell-specific Metrnl knockout mice, combined with bone marrow transplantation to produce bone marrow-specific deletion of Metrnl, we demonstrate that most of circulating METRNL (approximately 75%) originates from the endothelial cells. Both endothelial and circulating METRNL decrease in atherosclerosis mice and patients. By generating endothelial cell-specific Metrnl knockout in apolipoprotein E-deficient mice, combined with bone marrow-specific deletion of Metrnl in apolipoprotein E-deficient mice, we further demonstrate that endothelial METRNL deficiency accelerates atherosclerosis. Mechanically, endothelial METRNL deficiency causes vascular endothelial dysfunction including vasodilation impairment via reducing eNOS phosphorylation at Ser1177 and inflammation activation via enhancing NFκB pathway, which promotes the susceptibility of atherosclerosis. Exogenous METRNL rescues METRNL deficiency induced endothelial dysfunction. These findings reveal that METRNL is a new endothelial substance not only determining the circulating METRNL level but also regulating endothelial function for vascular health and disease. METRNL is a therapeutic target against endothelial dysfunction and atherosclerosis.

Study on health promotion lifestyle and influencing factors in middle-aged and elderly patients with knee osteoarthritis / 中国实用护理杂志

Objective:To understand the status of health-promoting lifestyle of middle-aged and elderly patients with knee osteoarthritis, and to comprehensively analyze the influencing factors based on the biological-psychological-social medicine model, to explore controllable factors.Methods:Using convenient sampling method, 177 middle-aged and elderly patients with knee osteoarthritis who were hospitalized in First Affiliated Hospital of Shandong First Medical University (Shandong Provincial Qianfoshan Hospital) from July 2020 to November 2020 were selected for questionnaire survey. The Health Promotion Lifestyle Profile Ⅱ (HPLP-Ⅱ) was used to evaluate their health promotion lifestyle status, the influencing factors were measured by general data sheet, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), disease recognition questionnaire for knee osteoarthritis patients, Social Support Rating Scale (SSRS), Hamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD) and Self-efficacy for Managing Chronic Disease (CDSES), respectively.Results:The total score of HPLP-Ⅱ, the total score of WOMAC, the score of disease recognition questionnaire, the total score of SSRS, the score of HAMA, HAMD, CDSES were (117.52 ± 15.58), (105.63 ± 31.64), (14.21 ± 3.23), (38.60 ± 5.18), (7.76 ± 4.41), (6.01 ± 4.54), (33.77 ± 6.04) points for middle-aged and elderly patients with knee osteoarthritis. The results of multiple linear regression analysis showed that the influencing factors were disease cognition, per capita monthly income, imaging grade, self-efficacy, support utilization, objective support, a total of 71.9% variation of regression equation could be explained.Conclusions:Middle-aged and elderly knee osteoarthritis patients health promotion lifestyle score at a low level, to improve, affected by disease cognition, imaging grading, self-efficacy, social support, medical staff should combine the degree of disease and individualized factors for disease health education, improve patients′ self-efficacy and social support level, prompting patients to adopt a healthy lifestyle.

Adult linear scleroderma with ptosis: a case report and literature review / 中华神经科杂志

Objective:To discuss the clinical features, diagnosis and treatment of linear scleroderma (LS).Methods:A case of LS diagnosed in the Second Hospital of Shandong University in October 20, 2020, was reported and the clinical features and pathological documentation of the disease reported in the literature were reviewed.Results:A 24-year-old woman presented cicatricial alopecia on the left frontoparietal area and facial atrophy for about 10 years. Two years before, she began to suffer ptosis and neurological complaints. Clinical features of different stages of the disease are presented. All 15 patients reported in the literature were analyzed, with a median of 22 years and a male to female ratio of 9∶6. There were 4 cases of linear scleroderma with ipsilateral drooping eyelids and lateral contraction, 3 cases of linear scleroderma with demyelinating lesions, combined with lateral contraction, 3 cases of linear scleroderma combined with lateral atrophy, and 1 case of linear scleroderma with ipsilateral facial spasm. Two cases were with the chest sclerosing spot. Two cases of linear scleroderma were with epileptic seizure and white matter demyelination lesion. Six cases were treated with hormone, 2 cases were treated with methotrexate. One case was treated with both hormone and methotrexate. One case was treated with botulinum toxin. Three cases were treated with surgical correction of eyelid ptosis. One case was treated with ultraviolet A1 radiation phototherapy and 1 case was treated with vitamin therapy.Conclusions:Patients with scleroderma may have ipsilateral facial atrophy, blepharoptosis and facial spasm. Some patients involving the nervous system may have epilepsy and myelitis. And demyelinating lesions can be seen in magnetic resonance imaging. Localized scleroderma may develop into systemic scleroderma. Therefore, it is recommended to combine immunosuppressants as soon as possible to control the development of the disease if necessary.

Psychosis speech recognition algorithm based on deep embedded sparse stacked autoencoder and manifold ensemble / 生物医学工程学杂志

Speech feature learning is the core and key of speech recognition method for mental illness. Deep feature learning can automatically extract speech features, but it is limited by the problem of small samples. Traditional feature extraction (original features) can avoid the impact of small samples, but it relies heavily on experience and is poorly adaptive. To solve this problem, this paper proposes a deep embedded hybrid feature sparse stack autoencoder manifold ensemble algorithm. Firstly, based on the prior knowledge, the psychotic speech features are extracted, and the original features are constructed. Secondly, the original features are embedded in the sparse stack autoencoder (deep network), and the output of the hidden layer is filtered to enhance the complementarity between the deep features and the original features. Third, the L1 regularization feature selection mechanism is designed to compress the dimensions of the mixed feature set composed of deep features and original features. Finally, a weighted local preserving projection algorithm and an ensemble learning mechanism are designed, and a manifold projection classifier ensemble model is constructed, which further improves the classification stability of feature fusion under small samples. In addition, this paper designs a medium-to-large-scale psychotic speech collection program for the first time, collects and constructs a large-scale Chinese psychotic speech database for the verification of psychotic speech recognition algorithms. The experimental results show that the main innovation of the algorithm is effective, and the classification accuracy is better than other representative algorithms, and the maximum improvement is 3.3%. In conclusion, this paper proposes a new method of psychotic speech recognition based on embedded mixed sparse stack autoencoder and manifold ensemble, which effectively improves the recognition rate of psychotic speech.

Effect of atherosclerotic high-fat diet on the level of glucose and lipid in mice / 药学实践杂志

Objective To study the effects of atherosclerotic high-fat diet on body weight, blood glucose, blood lipid levels and atherosclerotic plaque formation in mice, and to determine the effect of fasting time on the results of blood lipid testing. Methods 10-week-old male ApoE knockout (ApoE-/-) mice were given high-fat diet and normal diet. The atherosclerotic plaques were observed four months later. 10 week old C57BL/6J male mice were given regular diet for 4 weeks, regular diet for 2 weeks + high-fat diet for two or four weeks. Body weight、liver、glucose, and the serum lipid levels were examined. The influence of fasting for 12 h, 6 h or no fasting on blood lipid detection results before sacrificing were studied. Results The atherosclerotic plaque area of ApoE-/- mice given high-fat diet increased significantly (P<0.01). C57BL/6J mice given high-fat diet gained weight (P<0.01). The glucose, TC, LDL-c and HDL-c were also increased in C57BL/6J mice with liver fat accumulation while the level of TG was significantly decreased(P<0.01). Compared with the fasting 12 h group, serum triglyceride (TG) was significantly increased (P<0.01）in fasting 6 h and no fasting groups. Conclusion The atherosclerotic high-fat diet can accelerate the formation of atherosclerotic plaques in ApoE-/- mice, significantly increase blood sugar, TC and LDL-c levels, but significantly reduce TG values.. The fasting time can affect serum triglyceride (TG) level.

Establishment of mouse myocardial infarction model and early electrocardio- gram assessment / 药学实践杂志

Objective To establish and optimize a mouse myocardial infarction (MI) model, and to use twice limb lead ECGs immediately after coronary ligation and 4 h after surgery to evaluate the occurrence of myocardial infarction. Methods Twenty-nine male C57BL/6J mice were anesthetized with isoflurane. then a myocardial infarction model was established by ligating the left anterior descending (LAD) coronary artery through the third/fourth intercostal space of left anterior chest. Immediate and 4 h postoperative limb lead ECGs were performed. Twenty-four hours after surgery, the chest was opened and the occurrence of myocardial infarction was evaluated. The heart samples were taken for TTC staining to determine the infarct area and calculate the infarct area. Results During the mice underwent coronary artery ligation the intraoperative mortality was 6.8% (2/29), and the early postoperative (<4 h) mortality was 10.3% (3/29). The 24 h survival rate was 82.8% (24/29). 24 hours after TTC staining confirmed the occurrence of infarction, the myocardial infarction model was established. The success rate of the model was 79.3% (23/29), and the average infarct size (infarcted myocardial weight / whole ventricular weight) was (28 ± 6)%; The mice successfully established by the model showed obvious ST-T changes in the ECG at 4 hours after surgery, suggesting that a myocardial infarction has occurred. Conclusions The mouse myocardial infarction model was successfully established. The combined use of ECG immediately after surgery and 4 h after surgery could be used as a rapid and non-invasive evaluation method for mouse myocardial infarction.

A summary of research progress on intelligent information processing methods for pregnant women's remote monitoring / 生物医学工程学杂志

The monitoring of pregnant women is very important. It plays an important role in reducing fetal mortality, ensuring the safety of perinatal mother and fetus, preventing premature delivery and pregnancy accidents. At present, regular examination is the mainstream method for pregnant women's monitoring, but the means of examination out of hospital is scarce, and the equipment of hospital monitoring is expensive and the operation is complex. Using intelligent information technology (such as machine learning algorithm) can analyze the physiological signals of pregnant women, so as to realize the early detection and accident warning for mother and fetus, and achieve the purpose of high-quality monitoring out of hospital. However, at present, there are not enough public research reports related to the intelligent processing methods of out-of-hospital monitoring for pregnant women, so this paper takes the out-of-hospital monitoring for pregnant women as the research background, summarizes the public research reports of intelligent processing methods, analyzes the advantages and disadvantages of the existing research methods, points out the possible problems, and expounds the future development trend, which could provide reference for future related researches.

Moxibustion therapy improving delayed memory deficits via promoting neurogenesis and angiogenesis of hippocampus in a vascular dementia rat model / 针灸推拿医学（英文版）

Objective:To investigate the alteration of delayed memory and its relationship with neurogenesis and angiogenesis in vascular dementia (VD) rats after moxibustion therapy. Methods: Two hundred adult male SPF Wistar rats were chosen for the experiment. Thirty-six rats were randomly selected as the sham operation group. Except for rats in the sham operation group (n=36), the others were made into VD models by bilateral common carotid arteries occlusion (BCCAo). After modeling, the 108 survived rats were randomly divided into 3 groups: a model group, a neural stem cells (NSCs) plus endothelial progenitor cells (EPCs) moxibustion group and a NSCs moxibustion group. Co-transplanted implant was transplanted into the rats in the NSCs plus EPCs moxibustion group, and the rats in the NSCs moxibustion group were transplanted by NSCs only. The NSCs plus EPCs moxibustion group and the NSCs moxibustion group received suspended moxibustion therapy at Baihui (GV 20), Dazhui (GV 14) and Shenting (GV 24), (each group was divided into 3 subgroups by the treatment course as 1, 2 and 3 courses). Every group was measured by Morris water maze to evaluate its delayed memory after 3 treatment courses and the rat’s brain was taken out after perfusion of 4% paraformaldehyde one day after 1, 2 and 3 treatment courses, respectively. Marker protein expression was detected by laser confocal microscope to analyze the effect on neurogenesis and angiogenesis. Results: VD rats showed delayed memory in Morris water maze test 3 d after ischemic injury. After 3 courses of moxibustion therapy, VD-induced delayed memory deficits were improved in the NSCs plus EPCs moxibustion group and the NSCs moxibustion group. The expressions of nestin, doublecortin (DCX) and CD34 increased significantly in the two moxibusiton groups after every treatment course (all P＜0.05), which might contribute to the neurogenesis and angiogenesis in hippocampus. In addition, compared with the rats in the NSCs moxibustion group, the expressions of nestin, DCX and CD34 increased significantly in the NSCs plus EPCs moxibustion group (P＜0.05). Conclusion: Moxibustion can reverse VD-induced delayed memory deficits, which may be related to the promotion of neurogenesis and angiogenesis.

Correlation of serum vitamin D, adipose tissue vitamin D receptor, and peroxisome proliferator-activated receptor γ in women with gestational diabetes mellitus / 中华医学杂志(英文版)

BACKGROUND@#Gestational diabetes mellitus (GDM) is a common complication during pregnancy. Obesity and overweight are closely related to metabolic diseases and diabetes. However, the role of adipose tissue in the pathogenesis of GDM remains to be studied. The aim of this study was to investigate the correlation of vitamin D (VD) levels, VD receptor (VDR), and peroxisome proliferator-activated receptor γ (PPARγ) expression with GDM in overweight or obese women.@*METHODS@#One hundred and forty pregnant women with full-term single-birth cesarean-section were selected as the study subjects and grouped (70 GDM women, including 35 non-overweight/non-obese women [group G1] and 35 women with overweight or obesity [group G2]; 70 pregnant women with normal glucose tolerance, including 35 non-overweight/non-obese women [group N1] and 35 overweight/obese women [group N2]). The levels of serum VD, blood biochemistry, and adiponectin were compared in these women. Subcutaneous adipose tissue was isolated from the abdominal wall incision. VDR and PPARγ messenger RNA (mRNA) transcript levels in these adipose tissues were quantified by real-time polymerase chain reaction. The differences between the levels of PPARγ protein and phosphorylated PPARγ Ser273 were detected by Western blotting.@*RESULTS@#The serum VD level of GDM women was lower in comparison to that of women with normal glucose tolerance (G1 vs. N1: 20.62 ± 7.87 ng/mL vs. 25.85 ± 7.29 ng/mL, G2 vs. N2: 17.06 ± 6.74 ng/mL vs. 21.62 ± 7.18 ng/mL, P < 0.05), and the lowest in overweight/obese GDM women. VDR and PPARγ mRNA expression was higher in the adipose tissues of GDM women in comparison to that of women with normal glucose tolerance (VDR mRNA: G1 vs. N1: 210.00 [90.58-311.46] vs. 89.34 [63.74-159.92], G2 vs. N2: 298.67 [170.84-451.25] vs. 198.28 [119.46-261.23], PPARγ mRNA: G1 vs. N1: 100.72 [88.61-123.87] vs. 87.52 [66.37-100.04], G2 vs. N2: 117.33 [100.08-149.00] vs. 89.90 [76.95-109.09], P < 0.05), and their expression was the highest in GDM + overweight/obese women. VDR mRNA levels positively correlated with the pre-pregnancy body mass index (BMI), pre-delivery BMI, fasting blood glucose (FBG), homeostasis model assessment of insulin resistance (HOMA-IR), and PPARγ mRNA while it negatively correlated with the VD and the adiponectin levels (r = 0.395, 0.336, 0.240, 0.190, 0.235, -0.350, -0.294, respectively, P < 0.05). The degree of PPARγ Ser273 phosphorylation increased in obese and GDM pregnant women. PPARγ mRNA levels positively correlated with pre-pregnancy BMI, pre-delivery BMI, FBG, HOMA-IR, serum total cholesterol, triglyceride, free fatty acid, and VDR mRNA, while it negatively correlated with the VD and adiponectin levels (r = 0.276, 0.199, 0.210, 0.230, 0.182, 0.214, 0.270, 0.235, -0.232, -0.199, respectively, P < 0.05).@*CONCLUSIONS@#Both GDM and overweight/obese women had decreased serum VD levels and up-regulated VDR and PPARγ mRNA expression in adipose tissue, which was further higher in the overweight or obese women with GDM. VD may regulate the formation and differentiation of adipocytes through the VDR and PPARγ pathways and participate in the occurrence of GDM.

Correlation of serum vitamin D, adipose tissue vitamin D receptor, and peroxisome proliferator-activated receptor γ in women with gestational diabetes mellitus / 中华医学杂志(英文版)

Background@#Gestational diabetes mellitus (GDM) is a common complication during pregnancy. Obesity and overweight are closely related to metabolic diseases and diabetes. However, the role of adipose tissue in the pathogenesis of GDM remains to be studied. The aim of this study was to investigate the correlation of vitamin D (VD) levels, VD receptor (VDR), and peroxisome proliferatoractivated receptor γ (PPARγ) expression with GDM in overweight or obese women.@*Methods@#One hundred and forty pregnant women with full-term single-birth cesarean-section were selected as the study subjects and grouped (70 GDM women, including 35 non-overweight/non-obese women [group G1] and 35 women with overweight or obesity [group G2]; 70 pregnant women with normal glucose tolerance, including 35 non-overweight/non-obese women [group N1] and 35 overweight/obese women [group N2]). The levels of serum VD, blood biochemistry, and adiponectin were compared in these women. Subcutaneous adipose tissue was isolated from the abdominal wall incision. VDR and PPARγ messenger RNA (mRNA) transcript levels in these adipose tissues were quantified by real-time polymerase chain reaction. The differences between the levels of PPARγ protein and phosphorylated PPARγ Ser273 were detected by Western blotting.@*Results@#The serum VD level of GDM women was lower in comparison to that of women with normal glucose tolerance (G1 vs. N1: 20.62 ± 7.87 ng/mL vs. 25.85 ± 7.29 ng/mL, G2 vs. N2: 17.06 ± 6.74 ng/mL vs. 21.62 ± 7.18 ng/mL, P < 0.05), and the lowest in overweight/obese GDM women. VDR and PPARγ mRNA expression was higher in the adipose tissues of GDM women in comparison to that of women with normal glucose tolerance (VDR mRNA: G1 vs. N1: 210.00 [90.58-311.46] vs. 89.34 [63.74-159.92], G2 vs. N2: 298.67 [170.84-451.25] vs. 198.28 [119.46-261.23], PPARγ mRNA: G1 vs. N1: 100.72 [88.61-123.87] vs. 87.52 [66.37-100.04], G2 vs. N2: 117.33 [100.08-149.00] vs. 89.90 [76.95-109.09], P < 0.05), and their expression was the highest in GDM+ overweight/obese women. VDR mRNA levels positively correlated with the pre-pregnancy body mass index (BMI), pre-delivery BMI, fasting blood glucose (FBG), homeostasis model assessment of insulin resistance (HOMA-IR), and PPARγ mRNA while it negatively correlated with the VD and the adiponectin levels (r = 0.395, 0.336, 0.240, 0.190, 0.235, -0.350, -0.294, respectively, P < 0.05). The degree of PPARγ Ser273 phosphorylation increased in obese and GDM pregnant women. PPARγ mRNA levels positively correlated with pre-pregnancy BMI, pre-delivery BMI, FBG, HOMA-IR, serum total cholesterol, triglyceride, free fatty acid, and VDR mRNA, while it negatively correlated with the VD and adiponectin levels (r = 0.276, 0.199, 0.210, 0.230, 0.182, 0.214, 0.270, 0.235, -0.232, -0.199, respectively, P < 0.05).@*Conclusions@#Both GDM and overweight/obese women had decreased serum VD levels and up-regulated VDR and PPARγ mRNA expression in adipose tissue, which was further higher in the overweight or obese women with GDM. VD may regulate the formation and differentiation of adipocytes through the VDR and PPARγ pathways and participate in the occurrence of GDM.

Clinical observation of priming regimen with pegylated recombinant human granulocyte colony-stimulating factor for treatment of initial treatment elderly patients with acute myeloid leukemia / 白血病·淋巴瘤

Objective@#To evaluate the efficacy and side effects of priming regimen with pegylated recombinant human granulocyte colony-stimulating factor (PEG-rhG-CSF) in the treatment of initial treatment elderly patients with acute myeloid leukemia (AML).@*Methods@#Thirty-five elderly patients with early-stage AML (non-M3) who received pre-excitation chemotherapy in Yancheng Third People's Hospital from February 2015 to January 2019 were retrospectively analyzed. According to the different granulocyte colony-stimulating factor (G-CSF) in the chemotherapy regimen, 15 cases were in PEG-rhG-CSF group, 6 mg PEG-rhG-CSF was used alone on day 0 by subcutaneous injection; 20 cases were in recombinant human granulocyte colony-stimulating factor (rhG-CSF) group, 200 μg/m2 rhG-CSF was used per day from day 0 to day 13 by subcutaneous injection, rhG-CSF was suspended or continued according to the number of white blood cells. In addition, both groups were given priming regimen with cytarabine and arubicin, or cytarabine and harringtonine. The efficacy and adverse reactions of the two groups were compared.@*Results@#In the PEG-rhG-CSF group, there were 5 cases of complete remission, 6 cases of partial remission, 4 cases of non-remission, and 11 cases were effective. In the rhG-CSF group, there were 8 cases of complete remission, 7 cases of partial remission, 5 cases of non-remission, and 15 cases were effective. There was no significant difference in the efficacy between the two groups (χ 2= 0.012, P= 0.911). In terms of adverse reactions, the incidence of infectious fever, bone pain, duration of neutropenia, and duration of thrombocytopenia were not statistically significant (all P > 0.05).@*Conclusions@#In the pre-excitation chemotherapy for AML, the clinical efficacy and adverse effects of PEG-rhG-CSF are similar to rhG-CSF. However, the use of PEG-rhG-CSF can simplify the operation and reduce the pain and risk of local infection during chemotherapy.

Effects of moxibustion on learning and memory ability and the hippocampal BDNF/TrkB expressions in the rats of vascular dementia / 中国针灸

OBJECTIVE@#To explore the effects of (resolving stasis, promoting collateral circulation) moxibustion on learning and memory ability and the expressions of brain derived neurotrophic factor (BDNF) and tyrosine kinase B (TrkB) in the rats of vascular dementia (VD) in the microenvironment of neurovascular niche.@*METHODS@#Using 2-vessel occlusion (2-VO), the VD rat models were duplicated. The neural stem cells (NSCs) labeled with lentiviral vector-mediated enhanced green fluorescent protein (EGFP) were co-cultured with endothelial progenitor cells (EPCs) to structure the NSCs + EPCs implant. The implant was transplanted into the lateral ventricle of VD rats and the VD rat models with neurovascular niche were established. In No.1 experiment, the successful-modeled rats were divided into 3 groups, i.e. a NSCs + EPCs moxibustion group, a NSCs + EPCs blank group and a model group, 12 rats in each one. No any treatment was provided in the model group and the NSCs + EPCs blank group. The moxibustion therapy was adopted in the NSCs + EPCs moxibustion group, in which, the suspending moxibustion technique was applied to "Baihui" (GV 20), "Dazhui" (GV 14) and "Shenting" (GV 24), 20 min at each acupoint. The treatment was given once every day and a 14-day treatment was as one course. Totally, 3 courses of treatment were required. At the end of treatment, Morris water maze experiment was adopted to determine the learning and memory ability of the rats in each group. In the No.2 experiment, the model rats were divided into 3 groups, a NSCs + EPCs moxibustion group, a NSCs + EPCs blank group and a model group, 18 rats in each one. In each group, according to the durations of treatment, 3 subgroups were divided and 6 rats in each one. The intervention method was same as the No.1 experiment. Additionally, after corresponding treatment course, using perfusion, the brains were collected in each subgroup and the slices were frozen. BDNF/TrkB expressions were observed in the immunofluorescence test.@*RESULTS@#After treatment, in the NSCs + EPCs moxibustion group, the escape incubation was reduced, the time of the first running-cross platform was shortened and the frequency of running-cross platform increased as compared with the model group and the NSCs + EPCs blank group (<0.01, <0.05). The protein expressions were increased in tendency among the 3 courses of treatment in the NSCs + EPCs moxibustion group, indicating the significant differences (all <0.05), in which, the increase of the protein expressions in the NSCs + EPCs moxibustion group was better than the NSCs + EPCs blank group (<0.05, <0.01).@*CONCLUSION@#The moxibustion therapy is the effective approach to VD in clinical treatment. This therapy up-regulates the BDNF/TrkB protein expressions in the microenvironment of neurovascular niche, co-modulates NSCs-EPCs coupling mechanism, promotes nerve neogenesis and repairs the injured nerve.

A partition bagging ensemble learning algorithm for Parkinson's speech data mining / 生物医学工程学杂志

Methods for achieving diagnosis of Parkinson's disease (PD) based on speech data mining have been proven effective in recent years. However, due to factors such as the degree of disease of the data collection subjects and the collection equipment and environment, there are different categories of sample aliasing in the sample space of the acquired data set. Samples in the aliased area are difficult to be identified effectively, which seriously affects the classification accuracy of the algorithm. In order to solve this problem, a partition bagging ensemble learning is proposed in this article, which measures the aliasing degree of the sample by designing the the ratio of sample centroid distance metrics and divides the training set into multiple subsets. And then the method of transfer training of misclassified samples is used to adjust the results of subset partitioning. Finally, the optimized weights of each sub-classifier are used to integrate the test results. The experimental results show that the classification accuracy of the proposed method is significantly improved on two public datasets and the increasement of mean accuracy is up to 25.44%. This method not only effectively improves the classification accuracy of PD speech dataset, but also increases the sample utilization rate, providing a new idea for the diagnosis of PD.

Combining speech sample and feature bilateral selection algorithm for classification of Parkinson's disease / 生物医学工程学杂志

Diagnosis of Parkinson's disease (PD) based on speech data has been proved to be an effective way in recent years. However, current researches just care about the feature extraction and classifier design, and do not consider the instance selection. Former research by authors showed that the instance selection can lead to improvement on classification accuracy. However, no attention is paid on the relationship between speech sample and feature until now. Therefore, a new diagnosis algorithm of PD is proposed in this paper by simultaneously selecting speech sample and feature based on relevant feature weighting algorithm and multiple kernel method, so as to find their synergy effects, thereby improving classification accuracy. Experimental results showed that this proposed algorithm obtained apparent improvement on classification accuracy. It can obtain mean classification accuracy of 82.5%, which was 30.5% higher than the relevant algorithm. Besides, the proposed algorithm detected the synergy effects of speech sample and feature, which is valuable for speech marker extraction.

Practice and exploration of the tuition-free medical students' in rural areas of Sichuan province / 中国卫生政策研究

Objective:This paper summarizes the practical problems encountered in the implementation of the tuition-free medical students' policyin rural areas of Sichuan Province, and provides a reference for the implementation of this policy across the province. Methods :Semi-structured interviews were conducted with the principals of the orientation management policies of the health administrative departments and county level and primary health care in-stitutionsin Sichuan, and the focus group interviews were used to understand the dynamics of directed students. Results :The survey results showed that there were limited channels for students to understand the policy ; students' barren understanding of the work of grass-roots doctors ; credit and integrity files played a relatively low role in retaining medical talent students;the willingness of orientation students is higher, but there is a contradiction between applying for graduate students and retaining grassroots in rural areas ; and the relevant departments lacked a rational and efficient management mode for students. Conclusions :In order to ameliorate the construction of rural health human resources,policy administrators should place their emphasis on cultivating the sense of honor and responsibility in the rural-oriented tuition-free medical students'policy, improve the reward and punishment mechanism in policies, optimize the management and assessment process, and promote the orientation of the work among the various policy-participating departments in a more harmonious and orderly manner.

The diagnostic value of fiberoptic ductoscopy of the breast as an examination tool for pathological nipple discharge / 中华内分泌外科杂志

Objective To investigate the diagnostic value of fiberoptic ductoscopy (FDS) in pathological milky white nipple discharge.Methods The data of 1688 patients with pathological milky white nipple discharge who underwent FDS examination in Chengdu Third People's Hospital from Oct.2011 to Oct.2016 were analyzed retrospectively.Results Among the 1688 cases,the proportion of patients with milky white nipple discharge was 30％,higher than that of the bloody discharge (15％) and yellow liquid (24.5％).The detection rate of lesions in patients with milk nipple discharge was 9.3％,among whom 6.1％ was breast cancer.Conclusions FDS should be routinely performed in patients with pathological milky white nipple discharge,as an examination tool to exclude the intra ductal lesion.The disease should be paid more attention by physicians.

RE: Is There a Correlation between the Presence of a Spiculated Mass on Mammogram and Luminal A Subtype Breast Cancer?

No abstract available.

Changes of bone mass after concentrated growth factor liquid applied in dental implant surgery with guided bone regeneration / 中国组织工程研究

BACKGROUND: The osteogenesis effects of concentrated growth factors (CGF) gel have been studied, but little has been reported on CGF liquid.OBJECTIVE: To explore the bone mass changes after CGF is used in the dental implant surgery with guided bone regeneration (GBR) in patients with upper anterior tooth labial bone defect, and to evaluate the effect of CGF liquid combined with Bio-Oss bone meal on bone augmentation.METHODS: Fifty patients with single anterior tooth labial bone defect were enrolled and randomly divided into experimental and control groups (n=25 per group). Patients in both groups underwent dental implant surgery with GBR.CGF liqiud, Bio-Oss bone meal and biological membrane were used in the experimental group, and Bio-Oss bone meal and biological membrane used in the control group.RESULTS AND CONCLSUION: All patients healed well according to the successful criteria. Six months postoperatively,there was no significant difference in the thickness changes of labial bone between two groups (P > 0.05). From 6 months to 12 months after operation, the thickness changes of labial bone in the experimental group was significantly less than that in the control group (P < 0.05). Our findings indicate that CGF liquid combined with Bio-Oss bone meal makes good effect on dental implantation of patients with anterior tooth labial bone defect. CGF liquid also contributes to reduce the labial bone resorption of the implant after functional loading.

The Effect of Stasis-eliminating and Meridian-unblocking Moxibustion on Vascular Endothelial Cell Proliferation and Migrationin VD Rats / 上海针灸杂志

Objective To investigate the in vitrointervening effect of ratserum effector substances on vascular endothelial cell proliferation and migrationafter stasis-eliminating and meridian-unblocking moxibustion and explore the possible proangiogenic mechanism of stasis-eliminating and meridian-unblocking moxibustion treatment for vascular dementia.Method Male adult Wistar rats were used.Arat model ofvascular dementia was made by four-vessel occlusion(4-VO).The rats were randomized to moxibustion,Western medicationand model groups.Asham operation group was established as a control.There was a total of four groups.The moxibustion group received aconite cake moxibustion on point Baihui(GV20)and suspended moxibustion on points Dazhui(GV14)and Shenting(GV24) and the Western medication, an oralgavage of aniracetam tablets.Treatment was given 15 days as one course for a total of two courses.Blood was taken from the Orbital cavity in the moxibustion, sham operation and model groups after each course of treatment.After stasis-eliminating and meridian-unblocking moxibustion, animal serum was prepared tointervene in human umbilical vein endothelial cell (HUVEC-12) culture.Another parallel liquid group was set up. RPMI-1640 culture medium containing 10% fetal bovine serum (FBS) was prepared.Endothelial cell proliferationwas examined bymethyl thiazolyl tetrazolium (MTT) colorimetric assay.Endothelial cell migration was examined by cell scratch labeling.Result After two courses of treatment, the examination of endothelial cell proliferation by methyl thiazolyl tetrazolium (MTT) colorimetric assay showed that rat serum intervened significantly in human umbilical vein endothelial cell (HUVEC-12) proliferation in the moxibustion serum group compared with the model serum, sham operation serum and parallel liquid groups (P<0.01).At 24 hrs after two courses of treatment, the examination of endothelial cell migrationby cell scratch labelingshowed that rat serum intervention significantly increased the HUVEC-12 migration rate in the moxibustion serum group compared with the model serum, sham operation serum and parallel liquid groups (P<0.01).Conclusion Stasis-eliminating and meridian-unblocking moxibustion has a marked improving effect on vascular endothelial cell proliferation and migration in vascular dementiarats, which provides strong evidence for its in vitro proangiogenic effect.