Application and Biological Evaluation of Magnetic Cell Sorting Technology / 生物化学与生物物理进展

Magnetic cell sorting technology is a highly specific and rapid cell sorting technology using superparamagnetic nanocomposites for cell sorting, which is widely used in immunology, stem cytology, oncology, clinical medicine and other fields. Magnetic cell sorting technology is divided into positive isolation, negative isolation/untouched cell isolation, depletion, multi-step isolation and automated cell separation systems. In this review, we firstly give a brief introduction to the classification and application of magnetic cell sorting technology, then discuss several new techniques and challenges based on magnetic cell sorting in recent years, such as improving the sorting efficiency by improving the structure of magnetic materials and magnetic field structure. The necessity of biological evaluation of magnetic cell sorting products was emphatically analyzed. Through the biological evaluation, the advantages and disadvantages of magnetic cell sorting products can be understood, and the research and development ability could be improved. Therefore, 10 biological evaluation technical parameters related to magnetic cell sorting products were proposed: yield, purity, sterility, cytotoxicity, cell morphology, viability, light scattering characteristics of cells, fluorescent antibody labeling ability of cells, cell activation and cell proliferation. The 10 biological evaluation technical parameters play an important role in promoting the standardized application of magnetic cell sorting.

Anti-fibrosis Action of Therapy of Tonifying Kidney and Removing Stasis on Moderate-to-Severe Intrauterine Adhesions and Its Influence on Extracellular Matrix Degradation Related Factors in Menstrual Blood / 广州中医药大学学报

Objective To investigate the anti-fibrosis action of the therapy of tonifying kidney and removing stasis(shortened to Bushen Quyu method)on moderate-to-severe intrauterine adhesion and its influence on extracellular matrix degradation related factors in menstrual blood.Methods A total of 124 patients with moderate-to-severe intrauterine adhesions of kidney deficiency and blood stasis syndrome who were to undergo transcervical resection of adhesion(TCRA)were randomly divided into a study group and a control group,with 62 patients in each group.Both groups were given TCRA treatment.After the operation,the control group was treated with Progesterone + Estradiol Valerate Tablets,and the study group was treated with the combination of the Bushen Quyu method by using modified Guishen Decoction based on the treatment of the control group.The treatment covered 3 menstrual cycles.The changes in menstrual status,transvaginal color Doppler sonography parameters,scores of kidney deficiency and blood stasis syndrome,and scores of uterine adhesion in the two groups were observed before and after the treatment.Moreover,the two groups were observed before and after treatment in the changes of vascular endothelial growth factor(VEGF),transforming growth factor β1(TGF-β1),platelet-derived growth factor(PDGF),and connective tissue growth factor(CTGF)as well as the mRNA expression levels of matrix metalloproteinase 9(MMP-9),matrix metalloproteinase inhibitory factor 1(TIMP-1),phosphatidylinositol-3-hydroxykinase(PI3K)and collagen type I A1 protein(COL1A1).After treatment,the clinical efficacy and safety of the two groups were assessed.Results(1)After 3 menstrual cycles of treatment,the total effective rate in the study group was 93.55%(58/62),and that in the control group was 80.65%(50/62).The intergroup comparison showed that the therapeutic effect of the study group was significantly superior to that of the control group(P＜0.05).(2)After treatment,the menstrual flow,menstrual cycle and menstrual period of the two groups were significantly improved compared with those before treatment(P＜0.05),and the recovery of menstrual flow,menstrual cycle and menstrual period in the study group was significantly superior to that in the control group after treatment(P＜0.05).(3)After treatment,the transvaginal color Doppler sonography parameters of uterine blood flow index(FI),pulsatility index(PI),resistance index(RI),uterine cavity volume,and endometrial thickness in the two groups were significantly improved compared with those before treatment(P＜0.05).And the study group had significantly higher FI,uterine cavity volume,and endometrial thickness and had lower PI and RI than the control group(P＜0.05 or P＜0.01).(4)After treatment,the scores of uterine adhesion and the scores of kidney deficiency and blood stasis syndrome in the two groups were significantly decreased compared with those before treatment(P＜0.05),and the above scores in the study group were significantly lower than those of the control group after treatment(P＜0.01).(5)After treatment,the levels of VEGF,TGF-β1,PDGF,and CTGF in the two groups were significantly decreased compared with those before treatment(P＜0.05),and the levels of the above cytokines in the study group were significantly lower than those in the control group after treatment(P＜0.01).(6)After treatment,the relative mRNA expression levels of MMP-9 and PI3K in the menstrual blood of the two groups were significantly higher and the mRNA expression level of COL1A1 was significantly lower than that before treatment(P＜0.05).And the study group had higher mRNA expression levels of MMP-9 and PI3K in the menstrual blood than the control group after treatment(P＜0.05 or P＜0.01).(7)The total incidence of adverse reactions in the control group was 25.81%(16/62)and that in the study group was 16.13%(10/62).The intergroup comparison showed that the difference between the two groups was not statistically significant(P＞0.05).The symptoms of adverse reactions in the two groups disappeared after symptomatic treatment,and there were no adverse reactions related to the medication of Chinese medicine during the study.Conclusion The combination of Bushen Quyu formula combined with western medicine is more effective than western medicine alone for the treatment of patients with uterine adhesions after TCRA.The application of Bushen Quyu formula can further promote the recovery of menstruation in the patients,improve the circulation of blood flow in the endometrium,increase the endometrial thickness,regulate the expression of fibrosis factors,up-regulate the mRNA expressions of PI3K and MMP-9,restore the balance of the extracellular matrix(ECM),and prevent the reoccurrence of intrauterine adhesions.And its clinical medication is safe.

Study on Efficacy and Preliminary Mechanism of Qinggan Sanjie Xiaoying Decoction in the Treatment of Hashimoto's Thyroiditis / 中国中医药信息杂志

Objective To explore the clinical efficacy and mechanism of Qinggan Sanjie Xiaoying Decoction in the treatment of Hashimoto's thyroiditis with syndrome of stagnation heat of liver meridian and stagnation of spleen deficiency and phlegm.Methods Totally 70 patients were divided into control group and medicine group according to their wishes,with 35 patients in each group.Both groups were restricted to an iodine diet.The medicine group was given Qinggan Sanjie Xiaoying Granules,1 sachet at a time,twice a day,orally.The treatment for both groups lasted for 4 weeks.20 healthy people were chosen as the healthy group.The clinical efficacy of both groups was observed.TCM symptom score,thyroid antibody titer levels(TPOAb,TGAb),changes in thyroid volume and isthmus of both groups before and after treatment were compared.Levels of serum IKKα,IKBα and TNF-α of the three groups were compared.Adverse reactions of patients daring the treatment period were monitored.Results The total effective rate of the medicine group was 85.71%(30/35),while the control group was 20.00%(7/35).The medicine group was superior to the control group(P<0.05).Compared with before treatment,the medication group showed significant improvement in TCM symptom scores,TPOAb and TGAb titer levels,thyroid volume,and thyroid isthmus thickness after treatment(P<0.05).After treatment,TCM symptom score,thyroid volume in the medicine group were lower than those in the control group(P<0.05),and the decrease rate of TPOAb titer was higher than that in the group(P<0.05).The levels of IKKα and TNF-α before treatment of medicine group and control group were higher than that in the healthy control group,and the level of IKBα was lower than that of the healthy control group(P<0.05);compared with before treatment,the levels of IKKα and TNF-α in the medicine group decreased,and the level of IKBα increased(P<0.05);after treatment,the levels of IKKα and TNF-α in the medicine group were lower than that in the control group,and IKBα was higher than the control group(P<0.05).No adverse events were observed during the treatment period in both groups of patients.Conclusion Qinggan Sanjie Xiaoying Decoction can reduce the antibody titer level,thyroid enlargement,isthmus thickness,and TCM syndrome score in the treatment of Hashimoto's thyroiditis.It is safe and effective in clinical practice.Qinggan Sanjie Xiaoying Decoction may play a therapeutic role by interfering with NF-κB signaling pathway.

Application of "Internet +" hospital-community-family trinity linkage management model in maternal perinatal depression / 四川精神卫生

BackgroundPerinatal depression seriously affects the physical and mental health of pregnant women， such as affecting their role transition， identity， and family relationships， etc. In severe case， it can even lead to suicidal behavior， causing a heavy burden on pregnant women and their families. A hierarchical management model centered on pregnant women， involving collaboration of families， communities， and hospitals， facilitates comprehensive and dynamic management of perinatal depression. ObjectiveTo evaluate the application effect of "Internet +" hospital-community-family trinity linkage management model on perinatal depression in pregnant women， in order to provide a reference for the clinical intervention. Methods80 pregnant women who established medical records from the Department of Obstetrics and Gynecology of Mianyang Third People's Hospital from January to December 2022， with Edinburgh Postnatal Depression Scale （EPDS） score>9， were selected as the research objects. According to the random number table method， they were divided into a study group and a control group， each group consisting of 40 cases. Both groups received routine nursing intervention in the pregnant women's school of obstetrics and gynecology outpatient department before delivery， and in the study room of the department of obstetrics and gynecology after being admitted to the hospital for delivery. After discharge， they received routine follow-up until 42 days postpartum. The study group received the "Internet +" hospital-community-family ternary linkage management on the basis. EPDS， Pittsburgh Sleep Quality Index （PSQI）， Generic Quality of Life Inventory （GQOLI-74） and Nursing Satisfaction questionnaire were assessed before intervention and 42 days postpartum. ResultsAfter intervention， the EPDS score and PSQI score of the study group were lower than those of the control group （F=42.823， 60.453， P<0.05）， GQOLI-74 score and nursing satisfaction were higher than those of the control group （F=198.902， χ2=5.165， P<0.05） . Conclusion"Internet +" hospital-community-family trinity linkage management model may help to improve the severity of perinatal depression symptoms， improve the quality of sleep and life， and increase the satisfaction of pregnant women.［Funded by Mianyang Health Scientific Research Commission Project （number， 202134）］

Impacts of pnf stretching on joint flexibility in volleyball athletes / Impactos do alongamento pnf sobre a flexibilidade articular em atletas de vôlei / Impacto de los estiramientos pnf sobre la flexibilidad articular en atletas de voleibol

ABSTRACT Introduction: It is believed that the stretching method by Proprioceptive Neuromuscular Facilitation (PNF) can improve functional joint flexibility through neural stimuli, resulting in more precise movements for volleyball players. Objective: Study the effect of PNF stretching exercise on shoulder joint flexibility in volleyball athletes. Methods: A total of 30 members of a university volleyball team were randomly divided into experimental and control groups. The traditional stretching method was used in the control group, while the PNF stretching method was employed in the experimental group. Data regarding the range of motion and functional quality were collected before and after the intervention for statistical analysis. Results: After eight weeks of the experiment, the left anterior flexion functional score on the shoulder flexibility index of the experimental group increased from 147.05 ± 4.95 to 160.99 ± 4.56; the right frontal flexion score increased from 150.27 ± 5.93 to 162.16 ± 4.46. Shoulder joint stability was gradually stabilized from 88.33 to 101.17. The pass functional score increased from 4.17 ± 1.93 to 18.96 ± 1.77; the overall functional performance score increased from 9.02 ± 4.04 to 23.07 ± 3.96. The control group had an increase without statistical significance. Conclusion: PNF stretching exercises can improve the shoulder joint flexibility of volleyball players. Level of evidence II; Therapeutic studies - investigation of treatment outcomes.

RESUMO Introdução: Acredita-se que o método de alongamento pela Facilitação Neuromuscular Proprioceptiva (PNF) possa melhorar a flexibilidade funcional articular através de estímulos neurais, resultando em movimentos mais precisos para os jogadores de vôlei. Objetivo: Estudar o efeito do exercício de alongamento PNF sobre a flexibilidade articular no ombro de atletas de voleibol. Métodos: Um total de 30 integrantes de uma equipe universitária de voleibol foram divididos aleatoriamente em grupo experimental e de controle. O método tradicional de alongamento foi usado no grupo controle, enquanto o método de alongamento PNF foi empregado no grupo experimental. Os dados relativos à amplitude de movimento e qualidade funcional foram coletados antes e após a intervenção para análise estatística. Resultados: Após 8 semanas de experimento, a pontuação funcional de flexão anterior esquerda no índice de flexibilidade do ombro do grupo experimental aumentou de 147,05 ± 4,95 para 160,99 ± 4,56; a pontuação de flexão frontal do lado direito aumentou de 150,27 ± 5,93 para 162,16 ± 4,46. A estabilidade da articulação do ombro foi gradualmente estabilizada de 88,33 para 101,17. A pontuação funcional do passe aumentou de 4,17 ± 1,93 para 18,96 ± 1,77; a pontuação do desempenho funcional geral aumentou de 9,02 ± 4,04 para 23,07 ± 3,96. O grupo de controle teve um aumento sem expressividade estatística. Conclusão: O exercício de alongamento PNF pode melhorar a flexibilidade da articulação dos ombros dos jogadores de voleibol. Nível de evidência II; Estudos terapêuticos - investigação dos resultados do tratamento.

RESUMEN Introducción: Se cree que el método de estiramiento por Facilitación Neuromuscular Propioceptiva (PNF) puede mejorar la flexibilidad funcional articular a través de estímulos neurales, resultando en movimientos más precisos para los jugadores de voleibol. Objetivo: Estudiar el efecto del ejercicio de estiramiento PNF sobre la flexibilidad articular del hombro en atletas de voleibol. Métodos: Un total de 30 miembros de un equipo universitario de voleibol fueron divididos aleatoriamente en grupo experimental y grupo de control. En el grupo de control se utilizó el método de estiramiento tradicional, mientras que en el grupo experimental se empleó el método de estiramiento PNF. Se recogieron datos relativos a la amplitud de movimiento y la calidad funcional antes y después de la intervención para su análisis estadístico. Resultados: Tras 8 semanas de experimento, la puntuación funcional de flexión anterior izquierda en el índice de flexibilidad del hombro del grupo experimental aumentó de 147,05 ± 4,95 a 160,99 ± 4,56; la puntuación de flexión frontal derecha aumentó de 150,27 ± 5,93 a 162,16 ± 4,46. La estabilidad de la articulación del hombro se estabilizó gradualmente de 88,33 a 101,17. La puntuación funcional de paso aumentó de 4,17 ± 1,93 a 18,96 ± 1,77; la puntuación de rendimiento funcional general aumentó de 9,02 ± 4,04 a 23,07 ± 3,96. El grupo de control tuvo un aumento sin expresividad estadística. Conclusión: El ejercicio de estiramiento PNF puede mejorar la flexibilidad de la articulación del hombro de los jugadores de voleibol. Nivel de evidencia II; Estudios terapéuticos - investigación de los resultados del tratamiento.

Alteration and significance of serum lipid levels and nutritional status during BCMA-CAR-T-cell therapy in patients with refractory or relapsed multiple myeloma: a retrospective study based on LEGEND-2 / 中华血液学杂志

Objective: To explore the dynamic changes in serum lipid levels and nutritional status during BCMA-CAR-T-cell therapy in patients with refractory or relapsed multiple myeloma (R/R MM) based on LEGEND-2. Methods: The data of patients with R/R MM who underwent BCMA-CAR-T therapy at our hospital between March 30, 2016, and February 6, 2018, were retrospectively collected. Serum lipid levels, controlled nutritional status (CONUT) score, and other clinical indicators at different time points before and after CAR-T-cell infusion were compared and analyzed. The best cut-off value was determined by using the receiver operator characteristic (ROC) curve. The patients were divided into high-CONUT score (>6.5 points, malnutrition group) and low-CONUT score groups (≤6.5 points, good nutrition group), comparing the progression-free survival (PFS) and total survival (OS) of the two groups using Kaplan-Meier survival analysis. Results: Before the infusion of CAR-T-cells, excluding triglycerides (TG), patients' serum lipid levels were lower than normal on average. At 8-14 d after CAR-T-cell infusion, serum albumin (ALB), total cholesterol (TC), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and apolipoprotein A1 (Apo A1) levels dropped to the minimum, whereas CONUT scores reached the maximum. In addition to TG, apolipoprotein B (Apo B) levels increased compared with baseline. After CAR-T-cell therapy, the patients' serum lipid levels significantly increased with well-improved nutritional status. Spearman's related analysis showed that TC, HDL, and ApoA1 levels after CAR-T-cell injection were significantly negatively correlated with the grade of cytokine-release syndrome (CRS) (r=-0.548, P=0.003; r=-0.444, P=0.020; r=-0.589, P=0.001). Furthermore, survival analysis indicated that the CONUT score was unrelated to PFS, and the median OS of patients with R/R MM in the high-CONUT score group was shorter than that in the low-CONUT score group (P=0.046) . Conclusions: During CAR-T-cell therapy, hypolipidemia and poor nutritional status were aggravated, which is possibly related to CRS. The patients' serum lipid levels and nutritional status were significantly improved after CAR-T-cell treatment. The CONUT score affected the median OS in patients treated with CAR-T-cells. Therefore, specific screening and intervention for nutritional status in patients receiving CAR-T-cell therapy are required.

Comparison of safety of total laparoscopic versus laparoscopic-assisted radical gastrectomy for distal gastric cancer in older patients / 中华胃肠外科杂志

Objective: To compare the effectiveness of total laparoscopic versus laparoscopic-assisted distal gastrectomy and investigate the safety and replicability of total laparoscopic distal gastrectomy in older patients. Methods: This was a retrospective cohort study. The inclusion criteria were as follows: (1) age ≥65 years; (2) malignant gastric tumor diagnosed pathologically preoperatively; (3) Eastern Cooperative Oncology Group performance status score 0-1; (4) Grade I-III American Society of Anesthesiologists physical status; (5) preoperative clinical tumor stage I-III; (6) total laparoscopic or laparoscopic-assisted distal gastrectomy performed; and (7) gastrointestinal tract reconstruction using uncut Roux-en-Y or Billroth-II+Braun procedure. Patients who had received neoadjuvant therapy, undergone conversion to open surgery, or had serious comorbidities or incomplete data were excluded. The clinical data of 129 patients who met the above criteria and had undergone laparoscopic surgery for gastric cancer from January 2012 to December 2021 in the Gastrointestinal Cancer Center in the Beijing Cancer Hospital were analyzed. According to the operation method, the patients were divided into total laparoscopic group and laparoscopic-assisted group. Variables studied comprised: (1) surgical procedure and postoperative recovery; (2) postoperative pathological findings; and (3) postoperative complications. Measurement data with skewed distribution are represented as mean(quartile 1, quartile 3). Comparisons between groups were evaluated using the Mann-Whitney U test. Results: After propensity score matching in a 1:1 ratio, there were 40 patients in the total laparoscopic distal gastrectomy group and 40 in the laparoscopic-assisted distal gastrectomy group. Baseline characteristics did not differ significantly between the two groups (all P>0.05).Compared with the laparoscopic-assisted group, the total laparoscopic group had shorter main incisions (4.1±1.0 cm vs. 8.5±2.8 cm, t=9.375, P<0.001), time to fluid intake [4.0 (3.0, 4.8) days vs. 5.0 (4.0, 6.0) days, Z=2.167, P=0.030], and duration of indwelling abdominal drainage catheter [6.0 (6.0, 7.0) days vs. 7.0 (6.0, 8.0) days, Z=2.323, P=0.020]. Numerical Rating Scale scores on postoperative days 1 and 2 were higher in the total laparoscopic than the laparoscopic-assisted group [2.5 (1.0, 3.0) vs. 1.5 (1.0, 2.0), Z=1.980, P=0.048; 2.0 (1.0, 3.0) vs. 1.0 (1.0, 2.0), Z=2.334, P=0.020, respectively]. However, there were no significant differences between the groups in operation time, intraoperative blood loss, white blood cell count, hemoglobin concentration, or albumin concentration on postoperative day 1, time to ambulation, mean time to bowel movement, postoperative admission to the intensive care unit, length of postoperative hospital stay, or Numerical Rating Scale scores on postoperative day 3 (all P>0.05). There were also no significant differences between the two groups in maximum tumor diameter, pathological tumor type, total number of lymph nodes dissected, or total number of positive lymph nodes (all P>0.05). The incidence of postoperative complications was 15.0% (6/40) in the total laparoscopic group and the laparoscopic-assisted group; these differences are not significant (χ2<0.001, P>0.999). Conclusions: Compared with laparoscopic-assisted radical gastrectomy for distal gastric cancer, total laparoscopic surgery has the advantages of shorter incision, shorter time to fluid intake, and shorter duration of indwelling abdominal drainage catheter in older patients (age ≥65 years). Total laparoscopic radical gastrectomy for distal gastric cancer does not increase the risk of postoperative complications and could therefore be performed more frequently.

Influence of long-term use of entecavir on renal tubular function in patients with chronic hepatitis B / 临床肝胆病杂志

Objective To investigate the possible influence of long-term antiviral therapy with entecavir on renal function in patients with chronic hepatitis B (CHB) and the sensitive indicators for early identification of renal injury. Methods A cross-sectional real-world study was conducted for the clinical data of 125 CHB patients treated with entecavir for more than 1 year (treatment group) and 44 patients with chronic HBV infection who did not receive antiviral therapy (control group), including the changes in serum creatinine (SCr), estimated glomerular filtration rate (eGFR), and the levels of urinary α1 microglobulin (α1-MG), β2 microglobulin (β2-MG), and N-acetyl-β-D-glucosaminidase (NAG). The chi-square test or the Fisher's exact test was used for comparison of categorical data between groups. The independent-samples t test was used for comparison of normally distributed continuous data between groups, and the Mann-Whitney U test was used for comparison of non-normally distributed continuous data between groups. The Logistic regression analysis was used to investigate independent influencing factors for abnormal urinary α1-MG, β2-MG, and NAG in the treatment group. Results There were no significant differences in SCr and eGFR between the treatment group and the control group ( t =0.999 and -1.259, P > 0.05), and both indices were within the normal range in these two groups. The treatment group had significantly higher abnormal rates of urinary α1-MG and β2-MG than the control group (47.2%/42.4% vs 13.6%/13.6%, χ 2 =15.693 and 12.567, both P 2×upper limit of normal (18.4%/21.6% vs 2.3%/4.5%, both P 0.05) and the proportion of patients with urinary NAG > 2×upper limit of normal (8.8% vs 6.8%, P > 0.05). Compared with the control group, the treatment group had a significantly higher proportion of patients with abnormalities in two or more indicators for renal tubular injury (33.6% vs 11.4%, χ 2 =8.519, P 0.05). Conclusion Long-term treatment of CHB with entecavir may be associated with the risk of renal tubular dysfunction, and abnormalities in more than two indicators for renal injury may help to identify renal tubular dysfunction in patients, so as to adjust related treatment in time.

Clinical characteristics and risk factors of neonatal adrenal hemorrhage / 国际儿科学杂志

Objective:To explore the clinical characteristics and risk factors of neonatal adrenal hemorrhage(NAH), and to improve the understanding, diagnosis and treatment of this disease.Methods:In this study, a retrospective nested case-control study was used to collect clinical data of neonates diagnosed with NAH from January 2011 to December 2021 in the Department of Neonatology, Shengjing Hospital of China Medical University, and telephone follow-up were conducted for them.NAH infants with manifestations of neonatal hyperbilirubinemia were selected as the case group, and the random number table method was used to select the neonatal hyperbilirubinemia infants with NAH excluded by imaging in the same period at a ratio of 1: 2 as the control group.Characteristics of the clinical data of the two groups were compared and analyzed by Logistic regression to explore the risk factors of NAH.Results:During the study period, a total of 31 cases of NAH were diagnosed, with an average gestational age of(37.6±2.2) weeks, including 19 males, 25 full-term infants, 6 cases with macrosomia, 30 cases with natural labor, 29 cases with hyperbilirubinemia, 8 cases with birth injury, 7 cases with asphyxia, 9 cases with bilirubin encephalopathy, 12 cases with sepsis, 13 cases with intracranial hemorrhage, 17 cases with anemia, 9 cases with respiratory disease, 5 cases with hyperkalemia, 6 cases with hyponatremia.The results of NAH ultrasonography showed that 8 cases of hematoma had medium and low echoes, 6 cases of mixed echoes, and 17 cases of liquid flocculent echoes with or without punctate echoes.Color Doppler flow imaging results showed no blood flow signal.There were 26 cases on the right side, 4 cases on the left side, and 1 case on both sides.A total of 26 cases were followed up.Ultrasonography showed that most haematomas were absorbed within 1 to 3 months and disappeared within 6 months.Twenty-nine cases were included in the case group and 58 cases in the control group.Univariate analysis showed that age, birth weight, macrosomia, mode of delivery, bilirubin encephalopathy, neonatal sepsis, abdominal distension, anemia, asphyxia, total bilirubin, indirect bilirubin, Hb and CRP were significantly higher than those in the control group( P<0.05). Multivariate logistic regression analysis showed that macrosomia( OR=7.415, 95% CI=1.342~40.956, P=0.022) and asphyxia( OR=12.075, 95% CI=1.293~112.736, P=0.029) were independent risk factors of NAH. Conclusion:NAH is common in naturally born full-term infants, with a lack of specific clinical manifestations.Unexplained persistent hyperbilirubinemia may be its first symptom, often accompanied by anemia and ion disturbance.A few infants may have adrenal insufficiency.Macrosomia and asphyxia may be the risk factors for the occurrence of NAH.

Parameter transfer learning based on shallow visual geometry group network and its application in motor imagery classification / 生物医学工程学杂志

Transfer learning is provided with potential research value and application prospect in motor imagery electroencephalography (MI-EEG)-based brain-computer interface (BCI) rehabilitation system, and the source domain classification model and transfer strategy are the two important aspects that directly affect the performance and transfer efficiency of the target domain model. Therefore, we propose a parameter transfer learning method based on shallow visual geometry group network (PTL-sVGG). First, Pearson correlation coefficient is used to screen the subjects of the source domain, and the short-time Fourier transform is performed on the MI-EEG data of each selected subject to acquire the time-frequency spectrogram images (TFSI). Then, the architecture of VGG-16 is simplified and the block design is carried out, and the modified sVGG model is pre-trained with TFSI of source domain. Furthermore, a block-based frozen-fine-tuning transfer strategy is designed to quickly find and freeze the block with the greatest contribution to sVGG model, and the remaining blocks are fine-tuned by using TFSI of target subjects to obtain the target domain classification model. Extensive experiments are conducted based on public MI-EEG datasets, the average recognition rate and Kappa value of PTL-sVGG are 94.9% and 0.898, respectively. The results show that the subjects' optimization is beneficial to improve the model performance in source domain, and the block-based transfer strategy can enhance the transfer efficiency, realizing the rapid and effective transfer of model parameters across subjects on the datasets with different number of channels. It is beneficial to reduce the calibration time of BCI system, which promote the application of BCI technology in rehabilitation engineering.

Corrigendum to “Selection of quality markers of Jasminum amplexicaule based on its anti-diarrheal and anti-inflammatory activities: Effect-target affiliation-traceability-pharmacokinetics strategy” Chinese Herbal Medicines 11 (2019) 379–386 (Chinese Herbal Medicines (2019) 11(4) (379–386), (S167463841930070X), (10.1016/j.chmed.2019.08.002)) / 中草药·英文版

When this paper was first published the following ethical statement was omitted in error: All animal experimental protocols were approved by the Animal Ethics Committee of Guangdong Provincial Engineering Technology Institute of Traditional Chinese Medicine (Guangzhou, Guangdong, China, Approval NO: 048483). Further, all methods were performed in accordance with the relevant guidelines and regulations. NIH mice were purchased from the Guangdong Medical Laboratory Animal Center (Guangzhou, Guangdong, China, Certificate NO.44007200031795). The authors would like to apologise for any inconvenience caused.

A 14-year multi-institutional collaborative study of Chinese pelvic floor surgical procedures related to pelvic organ prolapse / 中华医学杂志(英文版)

BACKGROUND@#It has been a global trend that increasing complications related to pelvic floor surgeries have been reported over time. The current study aimed to outline the development of Chinese pelvic floor surgeries related to pelvic organ prolapse (POP) over the past 14 years and investigate the potential influence of enhanced monitoring conducted by the Chinese Association of Urogynecology since 2011.@*METHODS@#A total of 44,594 women with POP who underwent pelvic floor surgeries between October 1, 2004 and September 30, 2018 were included from 22 tertiary academic medical centers. The data were reported voluntarily and obtained from a database. We compared the proportion of each procedure in the 7 years before and 7 years after September 30, 2011. The data were analyzed by performing Z test (one-sided).@*RESULTS@#The number of different procedures during October 1, 2011-September 30, 2018 was more than twice that during October 1, 2004-September 30, 2011. Regarding pelvic floor surgeries related to POP, the rate of synthetic mesh procedures increased from 38.1% (5298/13,906) during October 1, 2004-September 30, 2011 to 46.0% (14,107/30,688) during October 1, 2011-September 30, 2018, whereas the rate of non-mesh procedures decreased from 61.9% (8608/13,906) to 54.0% (16,581/30,688) (Z = 15.53, P < 0.001). Regarding synthetic mesh surgeries related to POP, the rates of transvaginal placement of surgical mesh (TVM) procedures decreased from 94.1% (4983/5298) to 82.2% (11,603/14,107) (Z = 20.79, P < 0.001), but the rate of laparoscopic sacrocolpopexy (LSC) procedures increased from 5.9% (315/5298) to 17.8% (2504/14,107).@*CONCLUSIONS@#The rate of synthetic mesh procedures increased while that of non-mesh procedures decreased significantly. The rate of TVM procedures decreased while the rate of LSC procedures increased significantly.@*TRIAL REGISTRATION NUMBER@#NCT03620565, https://register.clinicaltrials.gov.

Biosynthesis of lipase by Burkholderia cenocepacia ST8 using waste cooking oil as feedstock

Aims@#Every year, an estimated 25 million tons of waste oil are produced worldwide, and the generation of waste oil is one of the biggest global environmental problems. The incorporation of oil as a substrate for lipase production has been studied and shown to have a positive impact on its production. Burkholderia sp. is one of the major lipase-producing bacteria with their ability in bioremediation of oil-contaminated soil. This study aims to compare the production of lipase by Burkholderia cenocepacia ST8 using waste cooking oil and unused cooking oil as feedstock.@*Methodology and results@#The effect of different types of waste cooking oil (sunflower oil and palm oil) and concentration (1-3%) of waste cooking oil, agitation speed (100-400 rpm) and initial dissolved oxygen concentration (10-50%) on lipase production by B. cenocepacia ST8 under batch fermentation mode were investigated. The major fatty acids of which had been consumed were determined using gas chromatography. Results showed that 2% (v/v) of single used sunflower cooking oil produced the highest lipase activity of 138.86 U/mL with a productivity of 2.10 U/mL/h; agitation speed of 300 rpm produced the highest lipase activity of 183.56 U/mL with a productivity of 3.06 U/mL/h while 30% initial concentration of dissolved oxygen produced a lipase activity of 176.45 U/mL with a productivity of 2.94 U/mL/h. Oleic acid and linoleic acid were found to be the most consumed by B. cenocepacia ST8 among other fatty acids. @*Conclusion, significance and impact of study@#This study shows that 2% (v/v) single used sunflower cooking oil was the better type and optimum concentration of carbon source for the production of lipase by the fermentation of B. cenocepacia under 300 rpm and 30% initial concentration dissolved oxygen. The incorporation of 2% (v/v) single used sunflower cooking oil may be a great alternative to reduce the cost for the production of lipase as well as reducing the amount of waste oil generation.

Correlation between cervical elastography parameters and time of the first stage of labor in late pregnancy by transvaginal ultrasound / 中华超声影像学杂志

Objective:To investigate the correlations between the labor process and the elastography parameters, and to explore the correlations among the elastography parameters.Methods:A total of 48 pregnant women in the late periods of pregnancy in Beijing Hospital from November 10, 2018 to January 30, 2019 were recruited prospectively. Elastography was performed to measure several elastographic parameters including the cervical length (CL), elasticity contrast index (ECI), hardness ratio (HR), internal orifice uterus(IOS) and external orifice uterus(EOS). They were followed up to delivery, and were divided into normal group and prolonged group according to the time duration of the first stage of labor. The correlation between the parameters and the time duration of the first stage of labor, as well as the relationships among the parameters were evaluated.Results:Among the 48 pregnant women, 35 cases were delivered by the vagina, 13 by cesarean section, 4 of whom were due to the prolongation of the first stage of labor and the other 9 cases for other reasons. The values of the CL and HR in normal group were significantly lower than that in prolonged group ( P=0.004, 0.02). The ECI in the normal group was significantly higher than that in the prolonged group ( P=0.046). Both the IOS and EOS in the normal group were higher than those in prolonged group without no significant difference( P>0.05). For the 35 women who underwent cervical elasticity assessment before labor and finally delivered vaginally, the duration of the first stage of labor was negatively correlated with cervical ECI ( r=-0.415, P<0.05). The ECI were negatively correlated with CL and HR ( r=-0.528, -0.374; P<0.05), and HR were negatively correlated with IOS and EOS ( r=-0.669, -0.558; P<0.01), whereas HR had no significant correlation with CL( P>0.05). Conclusions:The ECI of cervical tissue measured by cervical elastography can be used to semi-quantitatively evaluate the maturity of the cervix, it has potential value in predicting the labor duration and guiding clinical decision-making.

Analysis of Chemical Constituents in Bushao Tiaozhi Capsules by UPLC-Q-TOF-MS / 中国实验方剂学杂志

Objective:To analyze the main chemical constituents of traditional Chinese medicine compound Bushao Tiaozhi capsules by using UPLC-Q-TOF-MS technology. Method:The separation was eluted with Waters CORTECS UPLC C18 column（2.1 mm×150 mm，1.6 μm） in a gradient mode， with methanol-0.1% formic acid as the mobile phase. The column temperature was 40 ℃，the flow rate was 0.24 mL·min-1，and the injection volume was 1 μL. The mass spectrometry condition was X500R QTOF mass spectrometry，the positive and negative electrospray ionization （ESI） was adopted for determine the chromatographic effluent，and the main chromatographic peaks were assigned and distinguished by Q-TOF. Result:A total of 53 chemical constituents were identified by reference confirmation，literature comparison，and high mass spectrometry data analysis. The chemical constituent cluster was composed of 21 flavonoids，10 phenolics，5 monoterpene glycosides，7 diterpene lactones and 10 sesquiterpenes. Furthermore，all of the constituents were surveyed and classified according to their medicinal materials derivation. Among them，the 5 flavonoids components（mangiferin，isoquercitrin，typhaneoside，isorhamnetin 3-O-neohesperidoside，tiliroside）were identified in Microctis Folium for the first time. Conclusion:This study shows that UPLC-Q-TOF-MS technology provides a simple，rapid，and accurate method for the identification of chemical constituents in Bushao Tiaozhi capsules. The identified chemical components mostly cover the main constituents of each medicinal material in the formula，so as to provide a new technological method and theoretical foundation for further defining the pharmacological basis and mechanism of action and optimizing the quality control of Bushao Tiaozhi capsules.

Progress on utilizing mesenchymal stem cells as cellular delivery system for targeting delivery of as drug/gene for anti-tumor therapy / 浙江大学学报·医学版

Mesenchymal stem cells (MSCs) have the inherent tumor-homing ability with the attraction of multiple chemokines released by tumor tissues or tumor microenvironments, which can be utilized as promising cellular carriers for targeted delivery of anti-tumor drugs and genes. In most circumstances, large amount of systemicly administrated MSCs will be firstly trapped by lungs, following with re-distribution and homing to tumor tissues after lung clearance. Several approaches like enhanced interactions between chemokines and receptors on MSCs or reducing the retention of MSCs by changes of administration methods are firstly reviewed for improving the homing of MSCs towards tumor tissues. Additionally, the potentials and gains of utilizing MSCs to carry several chemotherapeutics, such as doxorubicin, paclitaxel and gemcitabine are summarized, showing the advantages of overcoming the short half-life and poor tumor targeting of these chemotherapeutics. Moreover, the applications of MSCs to protect and deliver therapeutic genes to tumor sites for selectively tumor cells eliminating or promoting immune system are highlighted. In addition, the potentials of using MSCs for tumor-targeting delivery of diagnostic and therapeutic agents are addressed. We believed that the continuous improvement and optimization of this stem cells-based cellular delivery system will provide a novel delivery strategy and option for tumor treatment.

HPLC specific chromatogram of Vernonia anthelmintica and determination of six components / 中国中药杂志

This work aims to establish an HPLC specific chromatogram and determine six components of Vernonia anthelmintica with chlorogenic acid, isochlorogenic acid B, isochlorogenic acid A, isochlorogenic acid C, scutellarein and luteolin as index components. HPLC analysis was performed on a Waters Xbridge C_(18) column(4.6 mm×250 mm, 5 μm) with gradient elution of acetonitrile-0.05% trifluoroacetic acid solution at a flow rate of 1.0 mL·min~(-1). The detection wave length was 360 nm and the column temperature was 30 ℃. Chemometrics software Chempattern was employed to analyze the data. HPLC specific chromatogram of V. anthelmintica was established and six characteristic peaks were marked. Six characteristic peaks were simultaneously determined by HPLC within 50 min. The contents of the six components in 13 batch samples of V. anthelmintica were 0.14%-0.68%, 0.44%-0.74%, 0.63%-1.01%, 0.14%-0.71%, 0.15%-0.26% and 0.010%-0.030%, respectively. The HPLC specific chromatogram of V. anthelmintica, together with determination of six components showed strong specificity, and it can be used for the quality control of the crude drug.

The protective effects of lycium barbarum polysaccharides on retinal neurons in diabetic rats and its mechanism / 中国应用生理学杂志

OBJECTIVE@#To clarify whether lycium barbarum polysaccharides (LBP) have protective effects on retina neuronal cells in diabetic rats and to identify the related mechanism involved in this process.@*METHODS@#Eighteen SD rats were randomly divided into 3 groups ( n= 6): normal control group (NC), diabetes mellitus group (DM) and LBP-treatment group (DM+LBP). The diabetic rat model was induced by single intraperitoneal injection of streptozotocin (STZ). The rats in DM+LBP group were treated with LBP at the dose of 1 mg/kg by gavage, once a day for 12 weeks. After the treatment, the weight and blood glucose, the generation of reactive oxygen species (ROS), the surviving retinal ganglion cells (RGCs) and amacrine cells and the protein expressions of nuclear factor E2-related factor 2 (Nrf2) and the heme oxygenase-1 (HO-1) were detected.@*RESULTS@#The successful rate of diabetic model was 100%. Compared with NC group, the rats of DM group caused weight loss, elevated blood glucose, a marked increase of ROS generation and a significant decrease in the number of RGCs and amacrine cells (P＜0.01), and these effects were diminished or abolished by LBP treatment. Meanwhile, LBP significantly increased the expressions of Nrf2 and HO-1 in the retinas of diabetic rats (P＜0.01).@*CONCLUSION@#LBP can improve retinal oxidative stress and exert beneficial neuroprotective effects in diabetic rats, and its mechanism may be associated with the activation of the Nrf2/HO-1 antioxidant pathway.

Combined Effects of A Body Shape Index and Serum C-reactive Protein on Ischemic Stroke Incidence among Mongolians in China / 生物医学与环境科学（英文）

OBJECTIVE@#We aimed to evaluate the combined effects of a high body shape index (ABSI) and a high serum C-reactive protein (CRP) level on the incidence of ischemic stroke in a Mongolian population in China.@*METHODS@#A prospective cohort study was conducted among 2,589 participants from June 2002 to July 2012 in Inner Mongolia, China. The participants were categorized into 4 groups according to their level of ABSI and CRP. Cox proportional hazards models were used to assess the hazard ratios (HRs) and 95% confidence intervals (CIs) for ischemic stroke among all groups.@*RESULTS@#The multivariate adjusted HRs (95% CI) of ischemic stroke for high ABSI and high CRP level were 1.46 (0.89-2.39) and 1.63 (0.95-2.79), respectively. Compared with the low ABSI/low CRP level group, the multivariate adjusted HRs (95% CI) of ischemic stroke in the low ABSI/high CRP, high ABSI/low CRP, and high ABSI/high CRP groups were 1.04 (0.46-2.35), 1.06 (0.58-1.95) and 2.52 (1.27-5.00), respectively. The HR of ischemic stroke for the high ABSI/high CRP level group was the highest and most statistically significant.@*CONCLUSION@#We found that participants with simultaneously high ABSI and high CRP levels had the highest risk of ischemic stroke in the Mongolian population. Our findings suggest that the combination of high ABSI and high CRP levels may increase the risk of ischemic stroke.

Garlicin Post-Conditioning Suppresses Adhesion Molecules in a Porcine Model of Myocardial Ischemia-Reperfusion Injury / 中国结合医学杂志

OBJECTIVES@#To evaluate whether garlicin post-conditioning can attenuate myocardial ischemiareperfusion injury in a catheter-based porcine model of acute myocardial infarction (AMI) by affecting adhesion molecules integrin β1/CD29 and platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31).@*METHODS@#Twenty-two swine were devided into 3 groups: 6 in a sham-operation group, and 8 each in the model and garlicin groups. AMI porcine model was established in the model and garlicin groups. The distal parts of the left anterior descending coronary artery in the animals of the model and garlicin groups were occluded by dilated balloon for 2 h, followed by reperfusion for 3 h. Garlicin (1.88 mg/kg) was injected over a period of 1 h, beginning just before reperfusion, in the garlicin group. Real-time polymerase chain reaction, immunohistochemistry and Western blot were carried out to detect mRNA and protein expressions of CD29 and CD31 3 h after reperfusion.@*RESULTS@#Hematoxylin-eosin staining showed a better myocardial structure in the garlicin group after reperfusion. Compared to the model group, garlicin inhibited both the mRNA and protein expression of CD29 and CD31 in reperfusion area and no-reflflow area (P<0.05 respectively).@*CONCLUSIONS@#Garlicin post-conditioning induced cardio-protection against myocardial ischemia-reperfusion injury in this catheter-based porcine model of AMI. The cardio-protective effect of garlicin is possibly owing to suppression of production of CD29 and CD31, by inhibition of the mRNA expression of CD29 and CD31.