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Objective To explore the MSCT features of airway-invasive pulmonary aspergillosis.Methods MSCT features of 27 cases of airway-invasive pulmonary aspergillosis confirmed by pathology or clinical experience were analyzed retrospectively.Results The lesions in 27 cases were distributed along the blood vessel and bronchus and located mainly in the upper and middle lung field in 19 cases.Multiple centrilobular nodules and tree-in-bud sign were found in 27 cases and bronchial wall thickening and patchy opacities around the bronchi were in 25 cases.Bronchiectasis was seen in 17 cases,and cavity-like change and inter-cavity separation were in 15 cases.In 22 cases of follow-up,the lesion progressed within 1 week after diagnosised and treatmented in 20 cases and recurred in slow recovery stage in 5 cases.Conclusion MSCT findings of airway-invasive pulmonary aspergillosis are various which may rapidly progress within a short time.MSCT palys an important role in the evolution and follow-up of airway-invasive pulmonary aspergillosis.
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<p><b>OBJECTIVE</b>To investigate the current status of the application of H-magnetic resonance spectroscopy (H-MRS) in neonates with hypoxic-ischemic encephalopathy (HIE), and to describe the trend of research in the field.</p><p><b>METHODS</b>PubMed, EMBASE, and Web of Science were searched for English articles published up to January 10, 2018, with the combination of key words and MeSH terms. The articles were screened according to inclusion and exclusion criteria. Excel 2016, Bicomb 2.0, and VOSviewer1.6.6 were used to analyze the key words, to perform a cluster analysis of hot words, and to plot the knowledge map.</p><p><b>RESULTS</b>A total of 66 articles were included, and 27 high-frequency key words were extracted. The results showed that H-MRS was mainly used in four directions of the clinical practice and scientific research on HIE. In clinical practice, H-MRS attracted wide attention as a clinical examination for HIE and a tool for prognostic evaluation; in scientific research, H-MRS was used in animal experiments and studies associated with mild hypothermia therapy.</p><p><b>CONCLUSIONS</b>As an auxiliary means of magnetic resonance imaging, H-MRS plays an important role in investigating the pathogenesis of neonatal HIE, improving existing therapies, and evaluating the prognosis of neonates with HIE.</p>
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Female , Humans , Infant, Newborn , Male , Hypoxia-Ischemia, Brain , Diagnosis , Diagnostic Imaging , Infant, Newborn, Diseases , Diagnosis , Diagnostic Imaging , Magnetic Resonance Imaging , MethodsABSTRACT
Objective To analyse the research status and research focus in immune thrombocytopenia.Methods The literatures of ITP subject category in the SCI-expanded (SCI-E) database during 2006-2016 were retrieved.Then the co-authorship,time distribution,research regional distribution,institute distribution,keywords distribution,especially the international hot research focus in ITP,were analyzed by using the Cite Space software base on the bibliometrics method.Results A total of 963 journal articles were retrieved,and the quantity of articles about ITP subjective category showed a steady increasing trend during 2006-2015.The researches mainly distributed in the east Asia,Europe and north America areas,and top issuing countries were American,China,Japan,Canada and England.The top issuing institution was the Cornell University.The anima model,thrombopoietin receptor agonist,Helicobacter pylori eradication,systematic review and T lymphocyte proliferation were the research hot points;the high frequency key words such as large dose of dexamethasone,gene polymorphism,correlation and reaction were the latest study direction.Conclusion The co-authorship,regional distribution,research hot points and trend are determined,which can provide references for ITP scientific field of our country.
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The China Food and Drug Administration (CFDA) modulated the Drug Registration Regulation at 2016.In this article,the registration classification of chemical drug was analyzed,and the definition,cormotation and technical standard of new drugs and generic drugs were compared.Compared with the 2007 version of regulations,obvious changes have happened,the scope of new drugs has been narrowed,and the definition is more strict and accurate,the scope of generic drugs has been expanded.The new regulation keeps the same evaluation standards with the ICH,FDA and EMA.Regulatory changes have a profound impact on the medical research and development:promoting the reformulation of domestic pharmaceutical market,encouraging R&D and innovation in enterprises and accelerating the pace towards the international market.
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Objective To investigate the effect of clopidogrel on platelet function and inflammation factor in treatment of severe carotid artery stenosis after stent-assisted angioplasty.Methods Patients (120 cases) with severe carotid artery stenosis after stent-assisted angioplasty were chosen and divided into two groups,the control group were given atorvastatin combined with aspirin,and the observation group were given atorvastatin combined with chlorine.The serum coagulants DD level,FIB level,inflammation factor P-chosen element level and restenosis event incidence of two groups were observed.Results D-double polymer of two groups had no significant difference;After surgery,the D-double polymer and FIB level of two groups were all higher (P ＜ 0.05).After surgery for 24 h,the D-double polymer and FIB level of observation group were higher,after 3 months of surgery,the D-double polymer and FIB level had no significant differences compared with before surgery,which were all in normal level.After 24 h,1 month,3 months of surgery,the D-double polymer and FIB level of observation group were all lower than control group (P ＜ 0.05).Before treatment,the P-chosen selectin of two groups had no significant differences,which were all decreased after surgery,and the observation group was lower than control group (P ＜ 0.05);The restenosis event of observation group was lower than control group (P ＜ 0.05).Conclusion Clopidogrel could control the platelet aggregation of severe carotid stenosis after surgery to prevent the thrombogenesis and decrease the restriction incidence,while control the inflammation factor expression to prevent the atherosclerosis.
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A sensitive electrochemical sensor for the detection of semicarbazide ( SEM ) based on the glassy carbon electrode modified with carboxylated multi-walled carbon nanotube ( CMWCNTs ) was constructed in this work. The modified materials were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and electrochemical impedance spectroscopy. The results showed that the CMWCNTs exhibited a certain degree of changes, such as the appearance of the characteristic peaks of carbon oxygen double bonds in carboxyl group, a decrease in diameter and length and a remarkable reduction of the impedance value. The electrochemical behavior of SEM on CMWCNTs/GCE was investigated by cyclic voltammetry and amperometric i-t curve in 1 mol/L HAc-NaAc buffer solution. An irreversible oxidation peak of SEM appeared at CMWCNTs/GCE. Compared to the bare electrode, the current of the oxidation peak was significantly increased. Under the optimal conditions such as HAc-NaAc solution ( pH 7 ) and scan rate of 0. 1 V/s, the obtained sensor presented linear response to SEM concentration in the range of 5. 0 × 10-6 mol/L-1. 09×10-3 mol/L, the linear regression equation was Ip(μA)=-0. 472+0. 0599C (μmol/L) with linear correlation coefficient of 0. 997. The detection limit was 1. 88×10-7 mol/L. At the same time, the recovery was from 92. 8% to 98. 0% in the test of pork liver samples.
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Objective To investigate the effect of single dose intraosseous injection of simvastatin on tumor vascular structure and function in murine breast cancer. Methods BALB/c mice and 4T1 murine breast cancer cells were used to establish a subcutaneous xenograft model. The mouse model of orthotopic breast cancer received intraosseous injection of a single dose of simvastatin (50 μg) or vehicle only. Frozen tumor tissue sections were prepared for co-immunostained with CD31 andα-SMA. Evans blue dye was injected into the tail vein to observe the vascular permeability. The expression level of HIF-1αwas detected by immunohistochemistry. Results Immunofluorescence dual staining showed that intraosseous injection of simvastatin increased the number of perivascular pericytes in the tumor vessel(P < 0. 05), Evans blue dye content showed that in vivo vessel permeability in the tumor tissue was significantly decreased(P < 0. 05), and the immunohistochemistry results showed that local hypoxic area was significantly improved. Conclusions Single dose intraosseous injection of simvastatin can promote the normalization of tumor vasculature by improving the coverage of pericytes.
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Objective To investigate the effect of clopidogrel on platelet function and inflammation factor in treatment of severe carotid artery stenosis after stent-assisted angioplasty.Methods Patients (120 cases) with severe carotid artery stenosis after stent-assisted angioplasty were chosen and divided into two groups,the control group were given atorvastatin combined with aspirin,and the observation group were given atorvastatin combined with chlorine.The serum coagulants DD level,FIB level,inflammation factor P-chosen element level and restenosis event incidence of two groups were observed.Results D-double polymer of two groups had no significant difference;After surgery,the D-double polymer and FIB level of two groups were all higher (P ＜ 0.05).After surgery for 24 h,the D-double polymer and FIB level of observation group were higher,after 3 months of surgery,the D-double polymer and FIB level had no significant differences compared with before surgery,which were all in normal level.After 24 h,1 month,3 months of surgery,the D-double polymer and FIB level of observation group were all lower than control group (P ＜ 0.05).Before treatment,the P-chosen selectin of two groups had no significant differences,which were all decreased after surgery,and the observation group was lower than control group (P ＜ 0.05);The restenosis event of observation group was lower than control group (P ＜ 0.05).Conclusion Clopidogrel could control the platelet aggregation of severe carotid stenosis after surgery to prevent the thrombogenesis and decrease the restriction incidence,while control the inflammation factor expression to prevent the atherosclerosis.
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A sensitive electrochemical sensor for the detection of semicarbazide ( SEM ) based on the glassy carbon electrode modified with carboxylated multi-walled carbon nanotube ( CMWCNTs ) was constructed in this work. The modified materials were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and electrochemical impedance spectroscopy. The results showed that the CMWCNTs exhibited a certain degree of changes, such as the appearance of the characteristic peaks of carbon oxygen double bonds in carboxyl group, a decrease in diameter and length and a remarkable reduction of the impedance value. The electrochemical behavior of SEM on CMWCNTs/GCE was investigated by cyclic voltammetry and amperometric i-t curve in 1 mol/L HAc-NaAc buffer solution. An irreversible oxidation peak of SEM appeared at CMWCNTs/GCE. Compared to the bare electrode, the current of the oxidation peak was significantly increased. Under the optimal conditions such as HAc-NaAc solution ( pH 7 ) and scan rate of 0. 1 V/s, the obtained sensor presented linear response to SEM concentration in the range of 5. 0 × 10-6 mol/L-1. 09×10-3 mol/L, the linear regression equation was Ip(μA)=-0. 472+0. 0599C (μmol/L) with linear correlation coefficient of 0. 997. The detection limit was 1. 88×10-7 mol/L. At the same time, the recovery was from 92. 8% to 98. 0% in the test of pork liver samples.
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Objective To investigate the effect of single dose intraosseous injection of simvastatin on tumor vascular structure and function in murine breast cancer. Methods BALB/c mice and 4T1 murine breast cancer cells were used to establish a subcutaneous xenograft model. The mouse model of orthotopic breast cancer received intraosseous injection of a single dose of simvastatin (50 μg) or vehicle only. Frozen tumor tissue sections were prepared for co-immunostained with CD31 andα-SMA. Evans blue dye was injected into the tail vein to observe the vascular permeability. The expression level of HIF-1αwas detected by immunohistochemistry. Results Immunofluorescence dual staining showed that intraosseous injection of simvastatin increased the number of perivascular pericytes in the tumor vessel(P < 0. 05), Evans blue dye content showed that in vivo vessel permeability in the tumor tissue was significantly decreased(P < 0. 05), and the immunohistochemistry results showed that local hypoxic area was significantly improved. Conclusions Single dose intraosseous injection of simvastatin can promote the normalization of tumor vasculature by improving the coverage of pericytes.
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<p><b>OBJECTIVE</b>To investigate the effect of premature rupture of membranes (PROM) on maternal infections and outcome of preterm infants.</p><p><b>METHODS</b>A total of 441 preterm infants and 387 mothers were enrolled as subjects. According to the presence or absence of PROM, the mothers were divided into non-PROM group with 104 mothers, PROM duration <72 hours group with 90 mothers, and PROM duration ≥72 hours group with 193 mothers. The three groups were compared in terms of clinical features of mothers and infants and complications.</p><p><b>RESULTS</b>Compared with the control group and the PROM duration <72 hours group, the PROM duration ≥72 hours group had significantly higher maternal age, incidence rate of umbilical vasculitis, and rate of antibiotic use; the PROM duration ≥72 hours group had a significantly higher incidence rate of moderate-to-severe chorioamnionitis than the control group (P<0.05), while there was no significant difference between the PROM duration ≥72 hours group and the PROM duration <72 hours group (P>0.05). Compared with the control group and the PROM duration <72 hours group, the PROM duration ≥72 hours group had significantly higher incidence rates of pneumonia and intracranial hemorrhage in preterm infants; the PROM duration ≥72 hours group had a significantly higher incidence rate of congenital infection and a significantly longer mean length of hospital stay compared with the control group (P<0.05), while there were no significant differences between the PROM duration ≥72 hours group and the PROM duration <72 hours group (P>0.05). The multivariate analysis showed that PROM duration ≥72 hours was an independent risk factors for pneumonia (OR=2.200, 95%CI: 1.386-3.492) and intracranial hemorrhage (OR=2.331, 95%CI: 1.420-3.827) in preterm infants.</p><p><b>CONCLUSIONS</b>PROM duration ≥72 hours significantly increases the risk of placental infection in mothers and it is an independent risk factor for pneumonia and intracranial hemorrhage in preterm infants.</p>
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Adolescent , Adult , Female , Humans , Infant, Newborn , Pregnancy , Young Adult , Chorioamnionitis , Fetal Membranes, Premature Rupture , Infant, Premature , Intracranial Hemorrhages , Logistic Models , Pregnancy Complications, Infectious , Time FactorsABSTRACT
BACKGROUND: Percutaneous vertebroplasty (PVP) has been proved to be effective for osteoporotic vertebral compression fractures (OVCF); however, bone cement leakage-related complications occur frequently. OBJECTIVE: To systematically evaluate the safety and complications of PVP with high-viscosity and low-viscosity bone cement in the treatment of OVCF. METHODS: We performed a systematic search by computer in PubMed, EMBASE, Cochrane Library (December, 2016) and CNKI, CBM, VIP and WanFang databases from January, 2000 to December, 2016; meanwhile, the relevant Chinese and English orthopedic journals were retrieved manually. Randomized controlled trials (RCTs) concerning the use of high-viscosity and low-viscosity bone cement in the PVP for OVCF were collected and systematically reviewed using the method recommended by the Cochrane Collaboration. The Meta-analysis was performed by using the RevMan5.2. RESULTS AND CONCLUSION: Six relevant RCTs were included, involving 554 patients (high-viscosity bone cement was used in 278 cases and low-viscosity bone cement in 276 cases). Meta-analysis results showed that postoperative pain symptoms were alleviated in all the 554 cases, and there was no significant difference in the amount of adjacent vertebral fractures between two approaches (P > 0.05). However, there was a significant difference in the visual analog scale score, Oswestry disability index value, Cobb angle, and bone cement leakage rate between high-viscosity and low-viscosity cement groups (P < 0.05). To conclude, PVP with either high-viscosity or low-viscosity bone cement can relieve pain rapidly in OVCF patients, and both approaches are safe and effective. However, high-viscosity bone cement has a lower cement leakage rate and better outcomes in visual analog scale score, Oswestry disability index, Cobb angle and cement leakage prevention as compared with low-viscosity bone cement.
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Objective: To establish the culture system of Vaccaria segetalis hairy roots. Methods: Agrobacterium rhizogenes R15834, R1601, R1000, and A4 were used to infect V. segetalis leaves to induce hairy roots and the influences of different physicochemical factors on its growth were investigated. The content of vaccarin was determined by HPLC. Results: A. rhizogenes R1601 had the highest induction rate by converted into V. segetalis leaves, The best growth cycle of cell suspension culture was defined when cultured in liquid MS medium with pH value of 6 and sucrose concentration of 3%, vaccarin in V. segetalis hairy roots was slightly higher than that in the seed. Conclusion: V. segetalis could successfully induce hairy roots, the foundation has been established for further oplimizing the proper cultural system for V. segetalis hairy roots and regulating the secondary metabolites.
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In order to determine the suitable harvest time of Dendrobium officinale from different regions in Yunnan province, the drying rate, mannose and glucose peak area ratio, extract, contents of polysaccharide and mannose of D. officinale samples collected from six producing areas in Ynnnan province were determined. The results indicate that drying rate and the contents of polysaccharide and mannose arrived the peak from January to April, extract reached a higher content from September to December, and mannose and glucose peak area ratio from October to February of the coming met the requirment of the Chinese Pharmacopoeia. Hence, the suitable harvesting time of D. officinale in Yunnan province is from December to February of the coming year,according to the experimental results and the request of the Chinese Pharmacopoeia.
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China , Dendrobium , Chemistry , Metabolism , Glucose , Metabolism , Mannose , Metabolism , Time FactorsABSTRACT
OBJECTIVE@#To screen, identify, and compare the serum biomarkers between anovulatory dysfunctional uterine bleeding (ADUB) and ovulatory dysfunctional uterine bleeding (ODUB) in Lizu females.@*METHODS@#The subjects included 128 ADUB patients, 63 ODUB patients, and 93 controls. The serum and supernate of the subjects' mense were collected and stored at -80 °C until use. Differential proteins in the sera of three groups were screened using surface-enhanced laser desorption ionization time-of-flight mass spectrometry. The screened proteins were then identified by tricine-SDS-PAGE gel and spectrometry. Protein expression levels in the menses of ADUB, ODUB, and control subjects were determined using ELISA, RT-PCR, and Western blotting. SPSS 14.1 was used for statistical analysis and chart drawing (α = 0.05).@*RESULTS@#Three differential protein peaks with peak values of 11.80, 13.59, and 14.68 km/z were screened and identified as serum amyploid protein A (SAA), vascular endothelial growth factor, and vitamin K epoxide reductase, respectively. The SAA was highly expressed in the menses of ADUB and ODUB patients but poorly expressed in the controls. The vascular endothelial growth factor was highly expressed in the menses of ODUB and controls but poorly expressed in ADUB patients. Meanwhile, the vitamin K epoxide reductase was highly expressed in the menses of ADUB and control subjects but poorly expressed in ODUB patients.@*CONCLUSIONS@#The SAA is the common serum biomarker of ADUB and ODUB. ADUB may be related to angiogenesis impairment, whereas ODUB may be associated with blood coagulation disruption.
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Adult , Female , Humans , Middle Aged , Analysis of Variance , Biomarkers , Blood , Case-Control Studies , China , Metrorrhagia , Blood , Serum Amyloid A Protein , Metabolism , Vascular Endothelial Growth Factor A , Blood , Vitamin K Epoxide Reductases , BloodABSTRACT
<p><b>OBJECTIVE</b>To investigate the research on neonatal jaundice in recent years by co-word analysis and to summarize the hot spots and trend of research in this field in China.</p><p><b>METHODS</b>The CNKI was searched with "neonate" and "jaundice" as the key words to identify the papers published from January 2009 to July 2013 that were in accordance with strict inclusion and exclusion criteria. To reveal the relationship between different high-frequency key words, Microsoft Office Excel 2013 was used for statistical analysis of key words, and Ucinet 6.0 and Netdraw were used for co-occurrence analysis.</p><p><b>RESULTS</b>A total of 2 054 papers were included, and 44 high-frequency key words were extracted. The current hotspots of research on neonatal jaundice in China were displayed, and the relationship between different high-frequency key words was presented.</p><p><b>CONCLUSIONS</b>There has been in-depth research on clinical manifestations and diagnosis of neonatal jaundice in China, but further research is needed to investigate the etiology, mechanism, and treatment of neonatal jaundice.</p>
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Humans , Infant, Newborn , Biomedical Research , Jaundice, Neonatal , Diagnosis , TherapeuticsABSTRACT
ABCC8,KCNJ11,and GLUD1 gene mutations were investigated in a male patient with congenital hyperinsulinism and his parents were also investigated.A 1484 G＞A mutation was found in the 10th exon of ABCC8 gene in the patient,which leads to amino acid substitution at the 495 residue of the sulphonylurea receptor SUR1 protein.The patient's father also carried the same heterozygous inactive mutation,while the genotype of the mother was normal,indicating that the gene mutation of the patient was paternally inherited.According to that mutation,it is deduced that the patient may suffer from the focal type of congenital hyperinsulinism.
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Objective To screen and identify the serum biomarker of anovulatory dysfunctional uterine bleeding (ADUB) , to determine the expression of biomarker protein in menses of ADUB pa-tients, and to investigate the relation between ADUB and the biomarker proteins. Methods Subjects included 128 ADUB patients and 93 age-matched controls( normal women ). Their serum and super-natant of mense were collected and stored for use at -80℃. The differential proteins in the serum of the 2 groups were detected by CM 10 and analyzed by Biomarker WizardTM3.2 software. Then, the differential proteins were identified by Trieine-SDS-PAGE gel separation, spectrometry identifica-tion, and immunoprecipitation. The expression of the protein identified above in the menses was test-ed by ELISA, RT-PCR, and Western blotting. SPSS 14.1 was applied for statistical analysis and chart drawing. Results Five differential protein peaks were screened and their peak values were 11.80, 13.59, 13.79, 13.85, and 14.20 km/z, respectively. The intensity of protein peak ( 11.80 km/z ) which was identified as serum amyploid protein A ( SAA ) of ADUB was significantly higher than that of the controls (P<0.05). While the intensity of protein peak (13.59 km/z) which was identified as vascular endothelial growth factor (VEGF) of ADUB was obviously lower than that of the controls (P<0.05). The intensity of protein peak 13.08, 13.85, and 14.20 was not different between the cases and controls. SAA expressed highly in the menses of ADUB but low in that of the controls. Conversely, VEGF expressed highly in the menses of the control but low in that of the ADUB. Conclusion Two biomarkers which might be related with ADUB have been correctly screened and identified as SAA and VEGF. It needs further study whether the increased expression of SAA and reduced expression of VEGF are the cause or result of ADUB.
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Objective To explore the relationship between the inflammatory reaction and insulin function in children with critically ill.Me-thods Ninty-six children with critical disease in Oct.2003 to Oct.2006 were enrolled in the study.Blood sugar,plasma insulin,C-peptide,tumor necrosis factor(TNF)-?,C reactive protein(CRP)were measured in the peak period and convalescence.Results Blood sugar and plasma levels of insulin,C-peptide,TNF-?,CRP were significantly higher in the peak period than those in the convalescence(Pa