The introduction to and inspiration from haematological management of major haemorrhage: a British Society for Haematology guideline / 中国输血杂志

Evidenced based and practical guidelines have important role in the decrease of mobility and mortality of the patients with major haemorrhage. Recently, British Society for Haematology updated a guideline on haematological management of major haemorrhage, which provides the recommendations in general and on alternatives to transfusion, obstetric haemorrhage, gastrointestinal haemorrhage, trauma and surgery, and the good practice statements for laboratory/organisational support. The comprehensive and instructive recommendations presented in the guideline will be good references for and assist in the education and development of the guidelines or protocols for the management of the patient with major haemorrhage in China.

Study on F9 gene expression downregulation and its clinical value in hepatocellular carcinoma / 中华肝脏病杂志

Objective: To analyze the expression levels of the F9 gene and F9 protein in hepatocellular carcinoma by combining multiple gene chip data, real-time fluorescence quantitative PCR (RT qPCR), and immunohistochemistry. Additionally, explore their correlation with the occurrence and development of hepatocellular carcinoma, as well as with various clinical indicators and prognosis. Methods: The mRNA microarray dataset from the GEO database was analyzed to identify the F9 gene with significant expression differences associated with hepatocellular carcinoma. Liver cancer and adjacent tissues were collected from 18 cases of hepatocellular carcinoma. RT-qPCR method was used to detect the F9 gene expression level. Immunohistochemistry was used to detect the F9 protein level. Combined with the TCGA database information, the correlation between F9 gene expression level and prognostic and clinicopathological parameters was analyzed. The biological function of F9 co-expressed genes associated with hepatocellular carcinoma was analyzed by the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG). Statistical analysis was performed using Graphpad Prism software. Results: Meta-analysis results showed that the expression of the F9 gene was lower in HCC tissues than in non-cancerous tissues. Immunohistochemistry results were basically consistent with those of RT-qPCR. The data obtained from TCGA showed that the F9 gene had lower expression values in stages III-IV, T3-T4, and patients with vascular invasion. A total of 127 genes were selected for bioinformatics analysis as co-expressed genes of F9, which were highly enriched in redox processes and metabolic pathways. Conclusion: This study validates that the F9 gene and F9 protein are lower in HCC. The down-regulation of the F9 gene predicts adverse outcomes, which may provide a new therapeutic target for HCC.

Chemical constituents from the leaves of Cinnamomum camphora var. linaloolifera and their anti-inflammatory activities / 中国中药杂志

Thirteen compounds were isolated and purified from the leaves of Cinnamomum camphora by the macroporous resin,silica gel,and Sephadex LH-20 column chromatographies. Those compounds were further identified by IR,UV,MS,and NMR techniques:( 2 S)-1-( 3″,4″-methylenedioxy phenyl)-3-( 2',6'-dimethoxy-4'-hydroxyphenyl)-propan-2-ol( 1),( 2 R,3 R)-5,7-dimethoxy-3',4'-methylenedioxy flavanol( 2),9-hydroxysesamin( 3),sesamin( 4),piperitol( 5),kobusin( 6),(-)-aptosimon( 7),acuminatolide( 8),1β,11-dihydroxy-5-eudesmene( 9),lasiodiplodin( 10),vanillin( 11),p-hydroxybenzaldehyde( 12),and p-hydroxybenzoic acid ethyl ester( 13). Compound 1 was a novel compound,and compounds 2,6,7,9 and 10 were isolated from Cinnamomum plants for the first time. Compounds 4,7 and 10 were found to possess good inhibitory effect on IL-6 production in LPS-induced BV2 cells at a concentration of 20 μmol·L-1 in the in vitro bioassay,with inhibition rates of 51. 26% ± 4. 13%,67. 82% ± 3. 77% and85. 81%±1. 19%,respectively.

Association of Overlapped and Un-overlapped Comorbidities with COVID-19 Severity and Treatment Outcomes: A Retrospective Cohort Study from Nine Provinces in China / 生物医学与环境科学（英文）

Objective@#Several COVID-19 patients have overlapping comorbidities. The independent role of each component contributing to the risk of COVID-19 is unknown, and how some non-cardiometabolic comorbidities affect the risk of COVID-19 remains unclear.@*Methods@#A retrospective follow-up design was adopted. A total of 1,160 laboratory-confirmed patients were enrolled from nine provinces in China. Data on comorbidities were obtained from the patients' medical records. Multivariable logistic regression models were used to estimate the odds ratio ( @*Results@#Overall, 158 (13.6%) patients were diagnosed with severe illness and 32 (2.7%) had unfavorable outcomes. Hypertension (2.87, 1.30-6.32), type 2 diabetes (T2DM) (3.57, 2.32-5.49), cardiovascular disease (CVD) (3.78, 1.81-7.89), fatty liver disease (7.53, 1.96-28.96), hyperlipidemia (2.15, 1.26-3.67), other lung diseases (6.00, 3.01-11.96), and electrolyte imbalance (10.40, 3.00-26.10) were independently linked to increased odds of being severely ill. T2DM (6.07, 2.89-12.75), CVD (8.47, 6.03-11.89), and electrolyte imbalance (19.44, 11.47-32.96) were also strong predictors of unfavorable outcomes. Women with comorbidities were more likely to have severe disease on admission (5.46, 3.25-9.19), while men with comorbidities were more likely to have unfavorable treatment outcomes (6.58, 1.46-29.64) within two weeks.@*Conclusion@#Besides hypertension, diabetes, and CVD, fatty liver disease, hyperlipidemia, other lung diseases, and electrolyte imbalance were independent risk factors for COVID-19 severity and poor treatment outcome. Women with comorbidities were more likely to have severe disease, while men with comorbidities were more likely to have unfavorable treatment outcomes.

Optimal cessation period of anti-HBV therapy to block mother-to-child transmission / 中华肝脏病杂志

Hepatitis B virus (HBV) carrier woman of childbearing age with high viral load is an important source of vertical transmission of hepatitis b virus from mother-to-child in China. Routine blockade with immunoglobulin combined with hepatitis B vaccine is used for neonates born to pregnant women with high viral load of hepatitis B virus, but in some cases, immunoprophylaxis fails. The main application of antiviral drugs in pregnancy is to reduce the serum viral load, thereby significantly improve the blocking rate of vertical transmission between mother and infant. Current evidence suggested that if the maternal age is less than 30 years old, with no obvious liver fibrosis or cirrhosis and there is no increase in ALT level >2ULN( upper limit of normal) during the treatment, the treatment with antiviral drugs can be stopped after delivery immediately. Additionally, ALT level should be examined at 4, 12 and 24 weeks after stopping the drug. Antiviral therapy for the occurrence of hepatitis attack should be given if criteria for HBV treatment are met.

Study on the Effect and Its Mechanism of Dexmedetomidine on the Inflammatory Response in Septic Mice / 中国药房

OBJECTIVE:To study the effect and its mechanism of dexmedetomidine(Dex)on inflammatory response in septic mice. METHODS:Mice were randomly divided into normal control group,model group,miR-146a inhibitor (50 mg/kg)+Dex (50 μg/kg)group,Dex low-dose,medium-dose,high-dose groups(10,30,50 μg/kg),10 in each group. Except for normal con-trol group,other groups were intraperitoneally injected lipopolysaccharide to induce septic models,intraperitoneally injected rele-vant medicines after 0.5 h. After drug intervention for 6 h,miR-146a expression,IRAK1 and TRAF6 mRNA expressions in periph-eral blood mononuclear cells in each group were detected by real-time fluorescence quantitative polymerase chain reaction method. IRAK1,TRAF6 protein expressions in peripheral blood mononuclear cells in each group were detected by Western blot method. TNF-α,IL-6 levels in serum were detected by enzyme-linked immunosorbent method. RESULTS:Compared with normal control group,miR-146a expression,TNF-α and IL-6 levels,IRAK1,TRAF6 mRNA and protein expressions in peripheral blood mononu-clear cells in model group were increased(P0.05). Compared with Dex high-dose group,miR-146a expression,in peripheral blood mononuclear cells in miR-146a inhibitor+Dex group was de-creased;TNF-α and IL-6 levels,IRAK1,TRAF6 protein expressions were increased (P0.05). CONCLUSIONS:Dex can inhibit the inflammatory response in sep-tic mice. The mechanism may associate with inducing miR-146a expression and inhibiting the 2 important adaptor proteins IRAK1, TRAF6 expressions in Toll-like receptor 4/nuclear factor-κB pathway.

Modified partially wide tangents technique in post-mastectomy radiotherapy for patients with left-sided breast cancer / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The role of internal mammary nodes (IMN) irradiation for breast cancer patients after mastectomy remains controversial. This study aimed to compare different techniques for radiation of the chest wall (CW) and IMN post-mastectomy for left-breast cancer patients in terms of dose homogeneity within planning target volume (PTV) and dose to critical structures.</p><p><b>METHODS</b>Thirty patients underwent CT simulation, while CW, IMN, left lung, heart and contralateral breast were contoured. Three three-dimensional conformal radiotherapy (3D-CRT) techniques, namely, standard tangents, partially wide tangents (PWT), and modified PWT techniques plus intensity modulated radiotherapy (IMRT) technique have been used to radiate CW and IMN. In addition to the target coverage and dose homogeneity, we also evaluated the dose to the critical structures including heart, left lung and contralateral breast.</p><p><b>RESULTS</b>All three 3D-CRT techniques provided satisfactory coverage regarding total PTV. The PWT and the modified PWT gave better coverage of IMN PTV with V(47.5) of (96.83 ± 4.56)% and (95.19 ± 3.90)% compared to standard tangents ((88.16 ± 7.77)%), P < 0.05. The standard tangents also contributed the biggest IMN V(D105%), V(D110%), V(D115%) and V(D120%). The lowest mean dose of the heart was achieved by the modified PWT ((8.47 ± 2.30) Gy), compared with PWT ((11.97 ± 3.54) Gy) and standard tangents ((11.18 ± 2.53) Gy). The mean dose of lung and contralateral breast with the modified PWT was significantly lower than those with PWT. Comparing IMRT with the modified PWT, both techniques provided satisfactory coverage. The conformity indexes (CI) with IMRT (CI1: 0.71 ± 0.02; CI2: 0.64 ± 0.02) were better than those with the modified PWT (CI1: 0.50 ± 0.02; CI2: 0.45 ± 0.02). The mean dose, V(5), V(10) and V(5-10) of heart and left lung with the modified PWT were significantly lower than those with the IMRT. The mean dose and V(D2%) of contralateral breast with the modified PWT were not significantly different from the IMRT (P = 0.868 and P = 0.212).</p><p><b>CONCLUSIONS</b>No single technique provides both the best CW and IMN coverage with minimum lung and heart dose. The modified PWT technique can be used as a clinical tool for the treatment of the left-sided post-mastectomy breast cancer patients to provide homogeneous target coverage while maintaining low doses to normal tissue.</p>

Her-2/neu gene and radiosensitivity / 中国癌症杂志

Her-2 receptor has already been identified as one of the most important biological markers of some malignant tumors,and also plays an important role in the biological behavior of those tumor cells.The over-expression of Her-2 receptor is associated with radioresistance of various tumor cells,and thus an antibody to Her-2/neu receptor can probably function as a radiosensitizer.In this review,we summarized some advances in the molecular mechanism and clinical aspects of the relationship between Her-2 and cellular radiosensitivity.

Experimental study of transplanted endothelial progenitor cells transfected with VEGF165 gene augment the survival volume of transplanted fat tissue / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the feasibility of transplanting endothelial progenitor cells (EPCs) transfected with VEGF165 gene to free transplanted fat tissue for increasing neovascularization and the survival.</p><p><b>METHODS</b>EPCs isolated from human cord blood were cultured in vitro and identified by immunocytochemistry. After transfection by VEGF165 gene, the expression of VEGF was assessed using ELISA. Then EPCs with (VEGF gene transfection group) and without VEGF165 gene transfection (EPCs group) were transplanted to free transplanted fat tissue at 18 nude mice's back, and nine nude mice transplanted with free fat tissue were injected with M199 (control group). CM-DiI was used to trace the transplanted cells. The capillary density of transplanted fat tissue was detected by CD34 immunohistochemistry.</p><p><b>RESULTS</b>EPCs expressed cell markers CD34, KDR and CD133. After transfection, the expression of VEGF was positive. Transplanted EPCs survived and proliferated, and transplanted EPCs were incorporated into the capillary networks in the transplanted fat tissue. The percent of survival volume of transplanted fat tissue of VEGF gene transfection group was (96.2 +/- 8.6)%, significantly higher than that of the EPCs group [(75.3 +/- 6.8)%, P < 0.05) and M199 group [(40.2 +/- 2.5)%, P < 0.05). The capillary density of transplanted fat tissue of VEGF gene transfection group was significantly higher than those of the EPCs group and M199 group (P < 0.05).</p><p><b>CONCLUSIONS</b>EPCs from human cord blood can increase free transplanted fat tissue neovascularization and the survival volume, and the ability of promoting neovascularization of EPCs transfected with VEGF165 gene is more potent than EPCs alone.</p>

PhaseⅢstudy on late course accelerated fractionated irradiation combined with concurrent chemotherapy for esophagus squamous cell carcinoma / 中华放射肿瘤学杂志

Objective To evaluate the role of late course accelerated fractions.ted irradiation(LCAF) combined with concurrent chemotherapy in the management of esophageal carcinoma.Methods From March 1998 to July 2000,111 eligible patients were randomized into LCAF alone group(LCAF,57 patients)or LCAF plus concurrent chemotherapy group(LACF-CT,54 patients).The radiotherapy regimen was identical in the two groups,consisting of conventional fractionation in the first 2/3 course and accelerated fractionation in the second 1/ 3 course to a total dose of 68.4 Gy/41 Fx/44 d.Chemotherapy regimen consisted of four eycles of cisplatin 25 mg/ (m~2?d)plus fluorouracil 600 mg/(m~2?d)on day 1 to 3 every 4 weeks and was delivered on the first day of radiotherapy.Results The median follow-up time was 67.1 months(range 47.6-76.4 months).The 1-,3-,5- year survival rate was 67%,44% ,40% and 77%,39% 28% in LACF-CF and LEAF group,respectively(P =0.310).Grade 3+4 acute side-effact was 42% and 25% in LCAF-CT and LCAF group,respectively(P＜0. 05),with 3 treatment-related deaths in the LCAF-CT group.Conclusions Late course accelerated fractionated irradiation combined with concurrent chemotherapy has a trend towards improving the survival,at the cost of increasing acute side-effect.Its role needs further confirmation by larger sample studied in randomization.