Radiomic Analysis Based on Gd-EOB-DTPA Enhanced MRI for the Preoperative Prediction of Ki-67 Expression in Hepatocellular Carcinoma.

RATIONALE AND OBJECTIVES: To develop and validate a random forest model based on radiomic features in Gd-EOB-DTPA enhanced MRI for predicting the Ki-67 expression in solitary HCC. MATERIALS AND METHODS: This retrospective study analyzed 258 patients with solitary HCC. Significant clinicoradiological factors were identified through univariate and multivariate analyses for distinguishing HCC with high (>20%) and low (≤20%) Ki-67 expression. Radiomic features were extracted at Gd-EOB-DTPA enhanced MRI. The recursive feature elimination (RFE) strategy was employed to screen robust radiomic features, and the Random Forest (RF) algorithm was utilized to rank radiomic features and construct prediction models. The AUC, accuracy, precision, recall, and f1-score were used to evaluate the performance of RF models. RESULTS: Multivariate analysis identified serum AFP level, tumor size, growth type, and peritumoral enhancement as independent predictors for HCC with high Ki-67 expression. The clinicoradiological-radiomic model that incorporated the clinicoradiological predictors and the top ten radiomic features outperformed the clinicoradiological model in the training set (AUCs 0.876 vs. 0.780; p < 0.001), though the test set did not have a statistical significance (AUCs 0.809 vs. 0.723; p = 0.123). The addition of clinicoradiological predictors did not yield a significant improvement in the performance of radiomic features in both sets (training, p = 0.692; test, p = 0.229). Decision curve analysis further confirmed the clinical utility of the RF models. CONCLUSION: The RF models based on radiomic features of Gd-EOB-DTPA enhanced MRI achieved satisfactory performance in preoperatively predicting Ki-67 expression in HCC.

Boric acid group-functional ruthenium complex as a novel fluorescence probe for robust detection of propyl gallate and tert-butyl hydroquinone by tuning the pH.

This study reported a ruthenium complex-based fluorescence probe, achieving rapid and sequential detection of propyl gallate (PG) and tert-butyl hydroquinone (TBHQ) for the first time by tuning pH only. Under 480 nm excitation, probe exhibited intensive emission at 620 nm, which was selectively quenched by PG at pH 7.0 due to the covalent binding between the boric acid of probe and o-diphenol hydroxyl of PG. Then pH was tuned to 7.4, the emission was significantly quenched by TBHQ because of the π-π stacking between aromatic rings of probe and paraquinone of TBHQ. This probe realized specific and sensitive detection of PG and TBHQ with wide range and low detection limit (0.26 µM for PG and 0.66 µM for TBHQ). Furthermore, a portable visual test paper detection platform was built based on this probe for rapid and sensitive detection of antioxidants in food, which was of great significance for market regulation.

Study on the Mechanism of NLRP3/IL-1/ NF-κB Signaling Pathway and Macrophage Polarization in the Occurrence and Development of VTE.

BACKGROUND: The role of inflammation in venous thromboembolism (VTE) has been the focus of recent research. The NLRP3/IL-1/NF-κB signaling pathway and cytokines such as IL-1, regulated by macrophage polarization, may be the key indicators of a prethrombotic state; however, the mechanisms by which they affect the occurrence of VTE remain unclear. METHODS: We used neurobiological clamps to stimulate the vein wall to induce vascular endothelial damage to generate a rat model of VTE, applied enzyme-linked immunosorbent assay and real time-polymerase chain reaction technology to identify key proteins (IL1ß, Caspase-1, NLRP3, and NF-κB P65), gene mRNA levels and protein expression levels of the NLRP3/IL-1/NF-κB signaling pathway in each group of Sprague Dawley rats, and observed the polarization state of M1 (CD86) and M2 (CD206) macrophages using immunohistochemistry. RESULTS: A dark red, small thrombus developed in the inferior vena cava immediately after modeling in the model and inhibitor groups. The plasma levels of IL-1 and TNF-α, mRNA expression of key proteins (IL1ß, Caspase-1, NLRP3, and NF-κB P65), and expression of key proteins (IL1ß, Caspase-1, NLRP3, and NF-κB P65) in VTE model rats were significantly higher than inhibitor, sham operation, and normal control groups (P < 0.05). Six hours after VTE modeling, M1 type macrophages were more significantly increased than M2 type macrophages in thrombus tissue (P < 0.05). CONCLUSIONS: Our analyses demonstrated that the nod-like receptor protein3/Interleukin-1/nuclear factor-κB signaling pathway and macrophage polarization are important in the occurrence and development of VTE and that their target regulation may become a new strategy for VTE prevention and treatment.

Effect of altitude hypoxia on blood-brain barrier after subarachnoid hemorrhage based on phosphatidylinositol 3-kinase/protein kinase B/nuclear factor κB pathway in rats / 解剖学报

Objective To investigate the effect of plateau hypoxia on the blood-brain barrier after subarachnoid hemorrhage (SAH) in rats. Methods Adult male SD rats (n = 78) were randomly divided into 4 groups: sham group (sham), SAH model group (SAH), plateau hypoxia sham group (Hp sham) and plateau hypoxia SAH model group (Hp SAH). The rat model of plateau hypoxia was established through low-pressure simulation chamber (altitude 5000 m), and the SAH model was established by endovascular perforation method. At 24 hours after SAH, neurobehavior score and SAH grade were assessed. The morphological changes of neurons and apoptosis of nerve cells in the CA1 region of hippocampal were observed by the staining of Nissl and TUNEL. The expression of phosphorylated PI3K (p-PI3K), PI3K, phosphorylated Akt (p-Akt), Akt, phosphorylated nuclear factor κB (p-NF-κB), NF-κB, matrix metalloproteinase-9 (MMP-9), occludin and claudin-5 in hippocampal were detected by the method of Western blotting. The expression of occludin and claudin-5 proteins in the CA1 region of hippocampal were observed by immunofluorescent staining. Results At 24 hours after SAH, the neurobehavior score decreased significantly and SAH grade increased significantly in the SAH and Hp SAH group (P< 0.05). Neurobehavior score decreased significantly in the Hp SAH group compared with the SAH group (P < 0.05). In the SAH group, neurons in the CA1 region of hippocampus were atrophied and deformed, the arrangement were disordered, the number of neurons decreased significantly, and the apoptosis of nerve cells increased significantly(P< 0.05). Plateau hypoxia could aggravate the morphological damage of neurons and apoptosis of nerve cells. The expression of p-PI3K/PI3K, p-Akt/Akt, occludin and claudin-5 proteins decreased significantly, while the expression of p-NF-κB/NF-κB and MMP-9 proteins increased significantly in the SAH and Hp SAH group (P< 0.05). The expression of p-PI3K/PI3K and MMP-9 proteins increased significantly in Hp SAH group compared with the SAH group. The expression of claudin-5 protein increased significantly in Hp sham group compared with the sham group (P < 0.05). Immunofluorescent staining showed that the expression of occludin and claudin-5 proteins in the CA1 region of hippocampus decreased in the SAH group. Plateau hypoxia could further decreased the expression of occludin and claudin-5 proteins. Conclusion Plateau hypoxia aggravates blood-brain barrier disruption after subarachnoid hemorrhage in rats through inhibiting PI3K/Akt/NF-κB pathway.

Effects of hypoxia preconditioning on hematology-related indexes through hypoxia inducible factor-1α/ stromal cell-derived factor-1 pathway in rats / 解剖学报

[Abstract] Objective To study the role of hypoxia inducible factor-1α (HIF-1α) / stromal cell-derived factor-1 (SDF-1) pathway in high altitude hypoxia preconditioning in rat. Methods Seventy-six adult male SD rats, which through fed in low-pressure oxygen chamber (altitude 5000 m) and Xining (altitude 2260 m) to establish the rat model of hypoxia preconditioning. Rats randomly divided into 6 groups: control group (Ctrl), high altitude hypoxic preconditioning 1 day group (HHP-1d), high altitude hypoxic preconditioning 4 days group (HHP-4d), high altitude hypoxic preconditioning 15 days group (HHP-15d), high altitude hypoxic preconditioning 30 days group (HHP-30d), medium altitude hypoxic preconditioning group (MHP). 7. 0 T small animal MRI was used to observe the intracranial structure, diameter of basilar artery and cerebral blood flow in the hippocampus and brainstem regions by the sequences of T2 weighted images (T2WI) and arterial spin labeling (ASL) in the groups of Ctrl, HHP-4d, HHP-30d and MHP. In each group, blood routine was tested, the concentrations of HIF-1α, SDF-1 in serum, platelet activating factor (PAF)and P-selectin (SELP) in plasma were detected by the method of ELISA. Results In the hypoxia preconditioning groups, intracranial structure and diameter of basilar artery had no significant difference, while cerebral blood flow in the regions of brainstem and hippocampus increased significantly (P<0. 05). Meanwhile, red blood cell and white blood cell increased significantly, while platelet decreased significantly in the groups of hypoxia preconditioning (P<0. 05). Red blood cell and platelet in MHP group were closer to Ctrl group. The concentrations of HIF-1α and SDF-1 (except HHP-1d group) increased significantly in hypoxia preconditioning groups (P<0. 05).The concentrations of PAF and SELP increased significantly in HHP-1d and HHP-15d groups. The concentration of PAF decreased significantly in the HHP-4d and HHP-30d groups, and SELP decreased significantly in HHP-4d group (P<0. 05). Conclusion Hypoxia preconditioning can increase oxygen storage and immune defense capacity, improve brain reserve capacity and play the effect of brain protection through HIF-1α/ SDF-1 pathway. The best effect preconditioning was feed at medium altitude (altitude 2260 m) for 30 days.

Evaluation of the physicochemical properties of alkali-soluble polysaccharide from Poria and its application in diclofenac sodium sustained-release tablets / 药学学报

In this study, alkali-soluble polysaccharide was extracted from Poria residue, and the structure of alkali-soluble polysaccharide was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and differential scanning calorimetry (DSC). The physical morphology of alkali-soluble polysaccharide and ethyl cellulose (EC) was investigated by scanning electron microscopy (SEM), and the focus on angle of repose, bulk density, tapped density, Carr index, interparticle porosity, cohesion index, Hausner ratio, etc. The physical fingerprints were drawn, and the powder properties were evaluated by multivariate analysis. Diclofenac sodium extended-release tablets were prepared by direct compression method using alkali-soluble polysaccharide and EC as insoluble backbone materials to evaluate the basic properties of the extended-release tablets, investigate the in vitro drug release behavior and study the release mechanism. The results showed that alkali-soluble polysaccharide is a semi-crystalline polymer with smooth lamellar structure, and its stacking and compressibility are stronger than EC. The in vitro release experiments showed that the slow release performance of alkali-soluble polysaccharide is stronger than EC, and the release behavior of the prepared slow release tablets is in accordance with the Higuchi model. The pore structure is formed inside the tablets during the release process, and the release mode is pore diffusion release. The results of this study are of great significance for the development of new slow-release materials and the rational use of resources.

Total Saponin Fraction of Dioscorea Nipponica Makino Improves Gouty Arthritis Symptoms in Rats via M1/M2 Polarization of Monocytes and Macrophages Mediated by Arachidonic Acid Signaling / 中国结合医学杂志

OBJECTIVE@#To explore the mechanism of effects of total saponin fraction from Dioscorea Nipponica Makino (TSDN) on M1/M2 polarization of monocytes/macrophages and arachidonic acid (AA) pathway in rats with gouty arthritis (GA).@*METHODS@#Seventy-two Sprague Dawley rats were randomly divided into 4 groups (n=18 in each): normal, model, TSDN at 160 mg/kg, and celecoxib at 43.3 mg/kg. Monosodium urate crystal (MSU) was injected into the rats' ankle joints to induce an experimental GA model. Blood and tissue samples were collected on the 3rd, 5th, and 8th days of drug administration. Histopathological changes in the synovium of joints were observed via hematoxylin and eosin (HE) staining. The expression levels of arachidonic acid (AA) signaling pathway were assessed via real-time polymerase chain reaction (qPCR) and Western blot. Flow cytometry was used to determine the proportion of M1 and M2 macrophages in the peripheral blood. An enzyme-linked immunosorbent assay (ELISA) was used to detect interleukine (IL)-1 β, tumor necrosis factor-alpha (TNF-α), IL-4, IL-10, prostaglandin E2 (PGE2), and leukotriene B4 (LTB4).@*RESULTS@#HE staining showed that TSDN improved the synovial tissue. qPCR and Western blot showed that on the 3rd, 5th and 8th days of drug administration, TSDN reduced the mRNA and protein expressions of cyclooxygenase (COX)2, microsomal prostaglandin E synthase-1 derived eicosanoids (mPGES-1), 5-lipoxygenase (5-LOX), recombinant human mothers against decapentaplegic homolog 3 (Smad3), nucleotide-binding oligomerization domain-like receptor protein 3 (NALP3), and inducible nitric oxide synthase (iNOS) in rats' ankle synovial tissues (P<0.01). TSDN decreased COX1 mRNA and protein expression on 3rd and 5th day of drug administration and raised it on the 8th day (both P<0.01). It lowered CD68 protein expression on days 3 (P<0.01), as well as mRNA and protein expression on days 5 and 8 (P<0.01). On the 3rd, 5th, and 8th days of drug administration, TSDN elevated the mRNA and protein expression of Arg1 and CD163 (P<0.01). Flow cytometry results showed that TSDN decreased the percentage of M1 macrophages while increasing the percentage of M2 in peripheral blood (P<0.05 or P<0.01). ELISA results showed that on the 3rd, 5th, and 8th days of drug administration, TSDN decreased serum levels of IL-1 β, TNF-α, and LTB4 (P<0.01), as well as PGE2 levels on days 3rd and 8th days (P<0.05 or P<0.01); on day 8 of administration, TSDN increased IL-4 serum levels and enhanced IL-10 contents on days 5 and 8 (P<0.05 or P<0.01).@*CONCLUSION@#The anti-inflammatory effect of TSDN on rats with GA may be achieved by influencing M1/M2 polarization through AA signaling pathway.

Effects of Total Saponins from Dioscorea Nipponica Makino on Monosodium Urate-Induced M1-Polarized Macrophages through Arachidonic Acid Signaling Pathway: An in vitro Study / 中国结合医学杂志

OBJECTIVE@#To investigate and reveal the underlying mechanism of the effect of total saponins from Dioscoreae nipponica Makino (TSDN) on the arachidonic acid pathway in monosodium urate (MSU) crystal-induced M1-polarized macrophages.@*METHODS@#M1 polarization of RAW264.7 cells were induced by 1 µ g/mL lipopolysaccharide (LPS). The methylthiazolyldiphenyl-tetrazolium bromide method was then used to screen the concentration of TSDN. MSU (500 µ g/mL) was used to induce the gouty arthritis model. Afterwards, 10 µ g/L TSDN and 8 µ mol/L celecoxib, which was used as a positive control, were added to the above LPS and MSU-induced cells for 24 h. The mRNA and protein expressions of cyclooxygenase (COX) 2, 5-lipoxygenase (5-LOX), microsomal prostaglandin E synthase derived eicosanoids (mPGES)-1, leukotriene B (LTB)4, cytochrome P450 (CYP) 4A, and prostaglandin E2 (PGE2) were tested by real-time polymerase chain reaction and Western blotting, respectively. The enzyme-linked immunosorbent assay was used to test the contents of M1 markers, including inducible nitric oxid synthase (NOS) 2, CD80, and CD86.@*RESULTS@#TSDN inhibited the proliferation of M1 macrophages and decreased both the mRNA and protein expressions of COX2, 5-LOX, CYP4A, LTB4, and PGE2 (P<0.01) while increased the mRNA and protein expression of mPGES-1 (P<0.05 or P<0.01). TSDN could also significantly decrease the contents of NOS2, CD80, and CD86 (P<0.01).@*CONCLUSION@#TSDN has an anti-inflammation effect on gouty arthritis in an in vitro model by regulating arachidonic acid signaling pathway.

Recent research on the nuclear factor-kappa B signaling pathway in cardiac injury in children with Kawasaki disease / 中国当代儿科杂志

Kawasaki disease (KD), also known as mucocutaneous lymph node syndrome, is a systemic acute vasculitis belonging to autoimmune disease. Up to now, the specific pathogenesis of this disease remains unclear, and it may involve various factors such as immune response, inflammatory response, and vascular endothelial injury caused by the activation of the nuclear factor-kappa B (NF-κB) signaling pathway. In particular, children with KD and cardiac injury tend to have a poor prognosis, and researchers hope to explore the specific pathogenesis of cardiac injury in KD to provide new options for clinical diagnosis and treatment and reduce the incidence rate of this disorder. This article reviews the recent research on the role of the NF-κB signaling pathway in cardiac injury in children with KD, so as to provide a basis for future studies.

The effect and mechanism of metformin on peripheral neuropathy in type 1 diabetic rats / 药学学报

Diabetic peripheral neuropathy (DPN) is one of the most common microvascular complications occurring in both type 1 and type 2 diabetes mellitus patients, which often results in patients suffering from severe hyperalgesia and allodynia. Up to now, the clinical therapeutic effect of DPN is still unsatisfactory. Metformin is an anti-diabetic drug that has been safely and widely used for the treatment of type 2 diabetes for decades. Studies have shown that metformin can improve pain caused by DPN, but its effects on the nerve conduction velocity and morphology of the sciatic nerve of DPN, and the mechanism for improving DPN are not clear. Therefore, the STZ-induced model of type 1 DPN in SD rats was used to study the effects of metformin on DPN, and to preliminarily explore its mechanism in this study. All animal experiments were carried out with approval of the Experimental Animal Welfare Ethics Committee of the Institute of Materia Medica (Chinese Academy of Medical Sciences and Peking Union Medical College). After the model was established successfully, STZ diabetic rats were randomly divided into a model group and a metformin treatment group, and 10 normal SD rats were selected as the normal control group, and the rats were intragastrically administered for 12 weeks. The results showed that metformin significantly reduced blood glucose, glycosylated hemoglobin, food consumption and water consumption in STZ rats. Metformin markedly increased the motor nerve conduction velocity and mechanical stabbing pain threshold, prolonged the hot plate latency threshold, and improved the pathological morphological abnormalities of the sciatic nerve in STZ rats. In addition, metformin increased the content of glutathione (GSH), enhanced the activities of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), and reduced the content of malondialdehyde (MDA) in serum and sciatic nerve of STZ diabetic rats, as well as regulating the expression of genes related to oxidative stress in the sciatic nerve. Metformin obviously reduced the levels of pro-inflammatory factors such as tumor necrosis factor α (TNF-α), interleukin (IL)-1β and IL-6 in the serum in STZ rats, and inhibited the gene expression of these inflammatory factors in the sciatic nerve. In summary, metformin significantly increased nerve conduction velocity, improved sciatic nerve morphological abnormalities and pain in DPN rats, which may be related to its effect in improving oxidative stress and reducing inflammation.

Research on hypoglycemic activity of Osmanthus fragrans var. thunbergii extract / 药学学报

This study aimed to assess the hypoglycemic activity, and in vitro inhibition of α-glucosidase, inhibition of the advanced glycation end products (AGEs), and total antioxidant capacity were used to clarify its bioactivity. Furthermore, the potential hypoglycemic active chemical constituents in the aqueous extract of Osmanthus fragrans var. thunbergii flower were characterized using high performance liquid chromatography-electrospray ionization-quadruple time-of-flight mass spectrometry (HPLC-ESI-QTOF-MS) method. The result showed that in vitro inhibition of α-glucosidase of the extract (IC50 = 2.11 ± 0.26 mg·mL-1) were similar to acarbose (IC50 = 2.88 ± 0.32 mg·mL-1), and it inhibited the AGEs formation and the total antioxidant capacity in a certain extent. Based on the MS fragmentation pathway analysis of reference chemical acteoside contained in this extract, and related references, 73 constituents were tentatively identified from the aqueous extract of Osmanthus fragrans var. thunbergii flower, including 58 phenylethanoids, 8 caffeoylquinic acids, 1 flavonoid vicenin-2, and 6 common organic chemicals in plant. Furthermore, 8 unknown alkaloids were characterized in this work. Among of these chemicals, 61 phenylethanoids were supposed to be detected for the first time. In conclusion, this work disclosed the potential hypoglycemic active constituents of Osmanthus fragrans var. thunbergii flower.

Effect of Edaravone and dexborneol on oxidative stress pathway in peripheral blood of elderly patients with acute ischemic stroke / 中华老年医学杂志

Objective:To investigate the effect of Edaravone and dexborneol(Eda.B)on oxidative stress pathway in peripheral blood of elderly patients with acute ischemic stroke.Methods:A total of 87 elderly patients with acute ischemic stroke in the Department of Neurology, Qinghai University Affiliated Hospital from July 2021 to January 2022 were selected as the study subjects.According to the random number table, they were divided into control group(44 cases)and edaravone dexborneol group(43 cases). Each group was divided into <12 h group, 12-24 h group and 24-48 h group according to the time of onset.Peripheral blood was collected in each group at admission and discharge, respectively.The serum levels of reactive oxygen species(ROS), Kelch-like epichlorohydrin-associated protein 1(Keap1), nuclear factor-E2-associated factor 2(Nrf2), heme oxygenase-1(HO-1), NAD(P)H quinone oxidoreductase 1(NQO1), tumor necrosis factor-α(TNF-α)and interleukin-6(IL-6), as well as superoxide dismutase(SOD)activity and malondialdehyde(MDA)content were detected.Results:Elderly patients with acute ischemic stroke receving Eda.B treatment after admission could reduce the serum concentration of ROS, TNF-α and IL-6, as well as MDA content, and increase the concentration of Keap1, Nrf2, HO-1 and NQO1 and SOD activity.Except for ROS concentration in <12 h group and SOD activity in <12 h and 12 h-24 h groups, the differences between the other groups were statistically significant( P<0.05 for all). Compared with the control group, the serum concentration of TNF-α and IL-6 of patients in the Eda.B group at discharge decreased, while the concentration of Nrf2(24-48 h group)and HO-1(24-48 h group), and SOD activity increased, the differences were statistically significant( P<0.05 for all). In the control group at discharge, the concentrations of ROS(24-48 h group), TNF-α(<12 h group, 24-48 h group)and IL-6, as well as MDA content decreased, while the concentrations of Keap1, Nrf2(<12 h group, 12-24 h group)and HO-1(<12 h group, 12-24 h group)increased, the differences were also statistically significant( P<0.05 for all). Compared with admission, the concentration of Keap1(24-48 h group)and HO-1(24-48 h group), the activity of SOD(<12 h group, 12-24 h group)increased and the content of MDA(12-24 h group)in the Eda.B group decreased at discharge( P<0.05 for all). Conclusions:Eda.B can reduce oxidative stress and inflammatory response in peripheral blood of elderly patients with acute ischemic stroke by acting on the Keap1/Nrf2 pathway.

The effect of mindfulness-based stress reduction on renal function and quality of life in uremic hemodialysis patients / 中国实用护理杂志

Objective:To construct a mindfulness-based stress reduction (MBSR) intervention program suitable for uremic hemodialysis patients, and analyze the impact of the program on renal function and quality of life in uremic hemodialysis patients.Methods:This was a randomized controlled trial. The convenience sampling method was used to select 92 uremic patients who underwent hemodialysis in the First People's Hospital of Lianyungang City from March 2018 to March 2019. They were divided into routine group (46 cases, routine care) and MBSR group (46 cases, MBSR of face-to-face guidance combined with WeChat platform supervision) by random number table method. Both groups were intervened for 8 weeks. The Chinese version of the European Five-Dimensional Scale (EQ-5D-3L) was used to evaluate the quality of life of the patients, and the quality of life of the two groups before and after the intervention was compared; and the blood creatinine (Scr) and estimated glomerular filtration rate (eGFR), urea nitrogen (BUN), cystatin C (CysC) levels of the two groups before and after the intervention were analyzed.Results:Before the intervention, there was no significant difference in the levels of Scr, eGFR, BUN, and CysC between the two groups ( P>0.05); after 8 weeks of intervention, the levels of Scr, eGFR, BUN, and CysC were (201.81±14.77) μmol/L, (35.30 ± 2.02) ml/min and (11.47 ± 2.66) mmol/L, (2.41 ± 0.28) mg/L in the MBSR group, (218.37 ± 14.90) μmol/L, (33.99 ± 1.95) ml/min, (12.50 ± 0.76) mmol/L, (2.76 ± 0.30) mg/L in the routine group, the differences were statistically significant between the two groups ( t values were 2.53-5.79, all P<0.05). Before the intervention, there was no significant difference in EQ-5D-3L scores between the two groups ( P>0.05); after 8 weeks of intervention, the pain (discomfort), anxiety (depression), Vasual Analogue Scale (VAS) scores were (1.17 ± 0.34), (1.02 ± 0.35), (88.57 ± 20.28) points in the MBSR group, and (1.46 ± 0.63), (1.30 ± 0.32), (62.69 ± 18.79) points in the routine group, the differences were statistically significant between the two groups ( t=2.75, 4.00, 6.35, all P<0.05). Scr level was negatively correlated with self-care, pain (discomfort), anxiety (depression), mobility, daily activity ability, and VAS ( r values were -0.481 - -0.214, all P<0.05); eGFR level was positively correlated with self-care, pain (discomfort), anxiety (depression), mobility, daily activity ability, and VAS ( r values were 0.199-0.492, all P<0.05). But BUN and CysC levels were not correlated with EQ-5D-3L score (all P>0.05). Conclusions:MBSR can effectively improve the renal function and quality of life of uremic hemodialysis patients, and it is worthy of clinical application.

Research progress of organophosphorus pesticides / organophosphorus nerve agents' protein adducts and formation mechanism / 中国药理学通报

Organophosphorus pesticides ( OPP) and organophosphorus nerve agents ( OPNAs) are both toxic organophosphorus compounds, which mainly exert toxic effects through irreversible inhibition of acetylcholinesterase ( AChE).This paper takes protein adducts as the research objective, studying the covalent adducts formed by OPP/OPNAs and different target proteins:endogenous scavengers ( butyrylcholinesterase, albumin, transfer-rin) and low-dose toxicity related proteins ( Cytoskeleton pro- tein, neuropathic target esterase, ubiquitin ) .The formation mechanism of protein adducts and the structural characteristics of active sites are reviewed for providing new ideas to confirm the exposure, trace, and accurate treatment and reasonable prevention of OP poisons in the future.

Study on the protective effect of rapamycin-treated dendritic cells on transfusion-related acute lung injury after infection / 中国输血杂志

【Objective】 To investigate the viability of rapamycin-treated rapamycin-treated dendritic cells (DCs) in intervening transfusion-related acute lung injury (TRALI) after infection. 【Methods】 1)The TRALI mouse model was induced by lipopolysaccharide (LPS) combined with anti-H2Kd antibody. The mice anal temperature and the wet/dry ratio of lung, kidney, spleen and brain tissues were measured. 2) Mouse bone marrow-derived DC cells were induced in vitro and treated with rapamycin (10nM) for 24h. 3) Mice were injected with or without rapamycin or rapamycin-treated DC, then injected with LPS intraperitoneally one hour later, finally injected with anti-H2Kd antibody 24 hours later to induce the onset of TRALI. The death situation of the mice was observed and recorded. The condition of mice after the onset of TRALI was analyzed by mouse body temperature, lung wet-dry ratio, and pleural effusion weight and lung histopathological sections. 【Results】 By comparing the induction effects of anti-H2Kd antibody solutions with different concentrations and volumes, the mouse model induced by 0.1mg/kg LPS combined with 4.5 mg/kg anti-H2Kd antibody (infusion volume of 100μL) was selected as the TRALI mouse model for this study. After the onset of TRALI, the wet/dry ratio of the lungs could be significantly increased and the body temperature could be significantly reduced in the model mice. After the intervention of TRALI mice with DCs treated with rapamycin, the mortality rate was significantly reduced, and the lung tissue lesions of the mice were significantly improved, whose protection effect was better than that of the rapamycin-treated group. Compared with the TRALI incidence group, the weight of pleural effusion in the intervention group was significantly reduced (P<0.05), but there was no significant difference in lung wet/dry ratio and body temperature. 【Conclusion】 The combination of LPS and antibodies can effectively induce a stable and typical TRALI mouse model, suggesting that the presence of infectious inflammation and blood transfusion-related inflammatory substances are the decisive factor for the pathogenesis of TRALI. Meanwhile, DCs treated with rapamycin have a protective effect on post-infection transfusion-related acute lung injury, which is expected to be a potential cell therapy strategy to intervene in the exacerbation of TRALI.

Effects of parental involvement on children s eye use behavior / 中国学校卫生

Objective@#To analyze the correlation between parental involvement and the formation of good eye use behavior in children,and to provide theoretical basis for more accurate prevention and control of myopia.@*Methods@#A total of 2 726 children and their parents from 3 primary schools were selected from April to May 2021 by clustering sampling method. Children s ocular parameters, eye use behavior, general characteristics of parents, and parental involvement were collected through ocular measurements and questionnaires, respectively.@*Results@#Parental involvement was associated with family economic, parental education level, and parental myopic status( P <0.05). Children s myopia risk was associated with parental involvement: lower myopia risk was associated with frequent parental involvement in behavioral management of child sleep and child outdoor activities( P <0.01). Parents who always/frequently participate in the management of children s eye behavior have an average daily screen time of <2 h ( OR= 1.95 , 95%CI =1.31-2.90), and daily outdoor activity time>2 h ( OR=0.78, 95%CI =0.65-0.93), daily sleep time >8 h ( OR= 0.52 , 95%CI =0.40-0.68), daily continuous reading and writing time <1 h ( OR=1.33, 95%CI =1.30-1.56), reading and writing The distance from the desktop > 30 cm ( OR=0.57, 95%CI =0.34-0.95) had a statistically significant effect ( P <0.05).@*Conclusion@#High parental involvement may help school age children develop good eye habits and reduce the risk of childhood myopia. Parental involvement is higher among those who had myopia themselves, and parental involvement is positively associated with total household income and parental literacy.

Overview of systematic reviews of acupuncture for vascular cognitive impairment / 中国针灸

OBJECTIVE@#To overview the methodological quality, report quality and evidence quality of the systematic review (SR) of acupuncture for vascular cognitive impairment ( VCI ).@*METHODS@#The SRs regarding acupuncture for VCI were searched in PubMed, Cochrane Library, EMbase, CNKI, SinoMed, Wanfang and VIP databases. The retrieval period was from the establishment of the database to September 24, 2020. The report quality, methodological quality and evidence quality of the included SRs were evaluated by PRISMA statement, the AMSTAR 2 tool and the GRADE system.@*RESULTS@#A total of 22 SRs were included, including 102 outcome indexes. The methodological quality was generally low, with low scores on items 2, 5, 7, 10, 14, 15 and 16. The report quality was good, with scores ranging from 19 points to 24.5 points. The problems of report quality were mainly reflected in the aspects of structural abstract, program and registration, other analysis and funding sources. The level of outcome indexes of SRs was mostly low or very low, and the main leading factor was limitation, followed by inconsistency and inaccuracy.@*CONCLUSION@#Acupuncture for VCI is supported by low quality evidence of evidence-based medicine, but the methodological quality and evidence body quality of relevant SRs are poor, and the standardization is needed to be improved.

Prevalence of dyslipidemia among adult professional athletesin Guangdong Province / 预防医学

Objective@#To investigate the prevalence of dyslipidemia among adult professional athletes in Guangdong Province, so as to provide insights into dyslipidemia screening and health management among professional athletes.@*Methods@#In 2019, active athletes at ages of 18 to 30 years were recruited from 12 provincial sports teams in Guangdong Province using a cluster sampling method. A self-designed questionnaire survey was conducted to collect gender, age and sport items, and the levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and high-density lipoprotein cholesterol (HDL-C) were detected. The non-HDL-C level was calculated, and the gender- and sport item-specific prevalence of dyslipidemia was estimated.@*Results@#Totally 460 athletes were investigated, including 245 males (53.26%) and 215 females (46.74%), with a mean age of (21.91±2.77) years. The overall detection of dyslipidemia was 25.87%, and the detection rates of high TG, high TC, high LDL-C, low-HDL-C and high non-HDL-C were 20.22%, 5.87%, 13.04%, 3.26% and 9.57%, respectively. The detection rates of high TG (9.39% vs. 1.86%; χ2=11.743, P<0.05), low HDL-C (5.31% vs. 0.93%; χ2=6.951, P<0.05) and high non-HDL-C (12.24% vs. 6.51%; χ2=4.351, P<0.05) were significantly greater in men than in women, and the detection of high TC was lower in men than in women (17.96% vs. 22.79%; χ2=8.627, P<0.05). There was a significant difference in the detection of dyslipidemia among athletes engaging in different sport items (χ2=47.552, P<0.05), and a high detection rate of dyslipidemia was seen in baseball athletes (34.29%), softball athletes (37.04%), shooting/archery athletes (52.73%).@*Conclusion@#The prevalence of dyslipidemia was 25.87% among adult professional athletes in Guangdong Province, and high TC in combination with high LDL-C were the predominant type of dyslipidemia. The management of blood lipids should be given a high priority to male athletes and baseball, softball and shooting/archery athletes.

Identification of the New Psychoactive Substance Eutylone / 法医学杂志

OBJECTIVES@#To establish a method to identify unknown sample based on the combined use of Fourier transform infrared spectroscopy (FTIR), gas chromatography-quadrupole time-of-flight mass spectrometry (GC-QTOF-MS), ultra-high performance liquid chromatography-linear ion trap quadrupole-orbitrap mass spectrometry (UPLC-LTQ-Orbitrap MS) and 1H-nuclear magnetic resonance spectroscopy (1H-NMR) technique.@*METHODS@#The unknown sample was directly analyzed by FTIR. The unknown sample was dissolved in methanol solution containing internal standard SKF525A and the supernatant was detected by GC-QTOF-MS and UPLC-LTQ-Orbitrap MS. The unknown sample was dissolved in methanol-d4 solution for structural analysis of 1H-NMR.@*RESULTS@#The characteristic absorption peaks of FTIR spectra obtained from unknown sample were 1 682 (C=O bond), 1 503, 1 488, 1 436, 1 363, 1 256, 1 092, 1 035, 935, 840 and 800 cm-1, the characteristic fragment ions (m/z) of GC-QTOF-MS were 86.096 4 (base peak), 58.065 1, 149.023 5, 121.028 6 and 65.038 6, the accurate mass [M+H]+ detected by UPLC-LTQ-Orbitrap MS was 236.127 7. The sample was identified as synthetic cathinone new psychoactive substance Eutylone by 1H-NMR.@*CONCLUSIONS@#The method established in this study can be used for structural confirmation of Eutylone.

Analysis of clinical and pathological features of 29 cases of perforating pilomatricoma / 中华皮肤科杂志

Objective:To analyze clinical and pathological features of childhood perforating pilomatricoma, and to explore its pathogenesis.Methods:A retrospective analysis was conducted on clinical and histopathological data from 29 children with perforating pilomatricoma in Department of Dermatology, Beijing Children′s Hospital from 2014 to 2020.Results:Among the 29 patients, 11 were males, and 18 were females, with a male-to-female ratio of 1∶1.64. Their age at onset ranged from 3 months to 14 years and 10 months, and the median age at onset was 4.58 years. The disease duration ranged from 2 months to 2 years, with an average of 8.72 months. The perforation occurred 2 days to 1 year and 6 months after the onset of pilomatricoma, with an average of 1.85 months. Ulceration occurred in 1 patient after the treatment with ichthammol, as well as in 3 patients after local scratching or bumping, and spontaneous ulceration without definite precipitating factors occurred in the remaining 25 patients. The average duration from the onset of disease to tumor perforation was 6.87 months. Skin lesions occurred on the face in 15 cases, on the lateral neck in 8, on the upper limb in 4, as well as on the scalp in 2. Perforating pilomatricoma clinically manifested as indurated subcutaneous nodules with crusts or ulcers, and was classified into 3 subtypes: ulcerative type (19 cases) , horny type (8 cases) , and crusted type (2 cases) . The tumor diameter ranged from 0.3 to 2.5 cm, with an average of 1.2 cm. Histopathological examination showed that the tumor was located in the superficial to middle dermis, and mainly consisted of basophils and ghost cells; in 19 cases, the tumor mass was extruded onto the skin surface through a perforated epidermal channel, and the epidermis around the perforation site was hyperplastic and invaginated into the dermis, forming epithelial tunnels surrounding the tumor; in 4 cases, the skin on the tumor surface was thinned and ruptured; in 6 cases, the perforation site could not be observed due to surgical separation of the epidermis and tumor. All lesions were resected, and no infection or recurrence was observed during the postoperative follow-up.Conclusions:Childhood perforating pilomatricoma mostly occurs on the face and neck, usually with rapid progress, and can be classified into ulcerative type, horny type and crusted type. Histological findings suggest that transepithelial elimination is an important mechanism underlying the occurrence of perforation in pilomatricoma.