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Objective: To describe the epidemiological distribution characteristics of peripheral blood mosaic chromosomal alteration (mCA) in community adults aged 30-79 years in 10 regions of China. Methods: A total of 100 297 participants with complete baseline information (demographic characteristics, lifestyle, physical examination, etc.) and genotyping data of blood-derived DNA in ten regions of the China Kadoorie Biobank study were included. The mCAs were detected with the Mosaic Chromosomal Alterations pipeline, and logistic regression models were used to compare the differences in the detection rate of mCAs in different regions and populations. Results: A total of 5 810 mCA carriers were detected, with the detection rate of 5.8%. The standardized detection rate was 5.1%. The baseline detection rate of mCA increased with age, which were 3.4%, 5.0%, and 9.4% in those aged 30-, 51-, and >60 years, respectively (trend test P<0.001). A more significant proportion of mCAs were found in men (8.0%) than women (4.0%), as well as in urban areas (6.4%) than in rural areas (5.3%), the difference was significant (P<0.001). After adjusting for age and gender, the detection rate of mCA was higher in current smokers or people quitting smoking due to illness and people with low physical activity level, and the mCA detection rate was lower in obesy people (5.3%) than that in people with normal body weight (5.9%) (P=0.006). Conclusions: The detection rate of mCAs varied with region and population in community adults aged 30-79 years in 10 regions of China. The study results might contribute to the molecular identification of aging populations and guide precision prevention of age-related diseases such as cancers.
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Adult , Female , Humans , Male , Middle Aged , Aged , China/epidemiology , Life Style , Risk Factors , Smoking/epidemiologyABSTRACT
Insomnia is a common sleep disorder without effective therapy and can affect a person's life. The mechanism of the disease is not completely understood. Hence, there is a need to understand the targets related to insomnia, in order to develop innovative therapies and new compounds. Recently, increasing interest has been focused on complementary and alternative medicines for treating or preventing insomnia. Research into their molecular components has revealed that their sedative and sleep-promoting properties rely on the interactions with various neurotransmitter systems in the brain. In this review, the role of 5-hydroxytryptamine (5-HT) in insomnia development is summarized, while a systematic analysis of studies is conducted to assess the mechanisms of herbal medicines on different 5-HT receptors subtypes, in order to provide reference for subsequent research.
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Humans , Sleep Initiation and Maintenance Disorders/drug therapy , Medicine, Chinese Traditional , Drugs, Chinese Herbal/therapeutic use , Plants, Medicinal , Receptors, Serotonin , SerotoninABSTRACT
Objectives: To investigate the role of donor change in the second hematopoietic stem cell transplantation (HSCT2) for hematological relapse of malignant hematology after the first transplantation (HSCT1) . Methods: We retrospectively analyzed patients with relapsed hematological malignancies who received HSCT2 at our single center between Mar 1998 and Dec 2020. A total of 70 patients were enrolled[49 males and 21 females; median age, 31.5 (3-61) yr]. Results: Forty-nine male and 21 female patients were enrolled in the trial. At the time of HSCT2, the median age was 31.5 (3-61) years old. Thirty-one patients were diagnosed with acute myeloid leukemia, 23 patients with ALL, and 16 patients with MDS or other malignant hematology disease. Thirty patients had HSCT2 with donor change, and 40 patients underwent HSCT2 without donor change. The median relapse time after HSCT1 was 245.5 (26-2 905) days. After HSCT2, 70 patients had neutrophil engraftment, and 62 (88.6%) had platelet engraftment. The cumulative incidence of platelet engraftment was (93.1±4.7) % in patients with donor change and (86.0±5.7) % in patients without donor change (P=0.636). The cumulative incidence of CMV infection in patients with and without donor change was (64.0±10.3) % and (37.0±7.8) % (P=0.053), respectively. The cumulative incidence of grade Ⅱ-Ⅳ acute graft versus host disease was (19.4±7.9) % vs (31.3±7.5) %, respectively (P=0.227). The cumulative incidence of TRM 100-day post HSCT2 was (9.2±5.1) % vs (6.7±4.6) % (P=0.648), and the cumulative incidence of chronic graft versus host disease at 1-yr post-HSCT2 was (36.7±11.4) % versus (65.6±9.1) % (P=0.031). With a median follow-up of 767 (271-4 936) days, 38 patients had complete remission (CR), and three patients had persistent disease. The CR rate was 92.7%. The cumulative incidences of overall survival (OS) and disease-free survival (DFS) 2 yr after HSCT2 were 25.8% and 23.7%, respectively. The cumulative incidence of relapse, OS, and DFS was (52.6±11.6) % vs (62.4±11.3) % (P=0.423), (28.3±8.6) % vs (23.8±7.5) % (P=0.643), and (28.3±8.6) % vs (22.3±7.7) % (P=0.787), respectively, in patients with changed donor compared with patients with the original donor. Relapses within 6 months post-HSCT1 and with persistent disease before HSCT2 were risk factors for OS, DFS, and CIR. Disease status before HSCT2 and early relapse (within 6 months post-HSCT1) was an independent risk factor for OS, DFS, and CIR post-HSCT2. Conclusion: Our findings indicate that changing donors did not affect the clinical outcome of HSCT2.
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Humans , Male , Female , Adult , Child, Preschool , Child , Adolescent , Young Adult , Middle Aged , Retrospective Studies , Hematologic Neoplasms/therapy , Hematopoietic Stem Cell Transplantation/adverse effects , Leukemia, Myeloid, Acute/therapy , Recurrence , Graft vs Host Disease/etiology , Chronic DiseaseABSTRACT
Objectives To provide scientific basis for the quality control of different species of Baishouwu by establishing the HPLC fingerprint of domestic of Baishouwu and determining the main active components of acetophenones. Methods HPLC-DAD method was used to determine the HPLC fingerprints of domestic of Baishouwu. Then, the content of 4 kinds of acetophenones in Baishouwu was determined. The column was Diamonsil C18（250mm×4.6mm, 5μm）with the mobile phase of methanol and 0.1% phosphoric acid at a flow rate of 1.0 ml/min. The detection wavelength of p-Hydroxyl acetophenone, baishouwu benzophenone, 2',4'-Dihydroxy acetophenone was set at 260 nm and 2',5'-Dihydroxy acetophenone at 280 nm respectively. Results The similarity and cluster analysis in HPLC fingerprint showed that the constituents were significantly different among C. bungei, C. auriculatum and C. wilfordii. The content of total acetophenones in C. wilfordii was significantly higher than that in other localities of C. auriculatum and C. bungei. Conclusions Acetophenone could be used as the evaluation index to evaluate the quality of Baishouwu in different origins. The content of total acetophenone in C. wilfordii is the highest, which could be used as the best quality resource of Baishouwu.
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Objective To study the effects of endophytic fungus Epichloë bromicola SH09 on the plant growth and accumulation of active components in Salvia miltiorrhiza, and improve the quality of medicinal plant S. miltiorrhiza. Methods E. bromicola SH09 solid bacterial fertilizer was prepared and co-cultured with S. miltiorrhiza for 60 d and 120 d. Four morphological indexes, fresh weight of roots, dry weight of roots, and the contents of four tanshinones and two phenolic acids in the roots of S. miltiorrhiza from treated group and control group were assayed, respectively. Results After 60 d and 120 d co-culture, E. Bromicola SH09 significantly increased the tiller number, plant height, leaf number, leaf area, fresh weight of roots, dry weight of roots, and the content of tanshinones and phenolic acids in S. miltiorrhiz. Conclusion The endophytic fungus E. bromicola SH09 can effectively promote the plant growth and improve the accumulation of active components in S. miltiorrhiza, which not only broadens the new ecological functions of endophytic fungi, but also improves the quality of medicinal plant S. miltiorrhiza.
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The treatment of refractory Glaucoma is a difficult problem in clinical ophthalmology. For refractory glaucoma patients with hyphema, shallow anterior chamber, anterior conglutination of peripheral chamber angle, corneal endothelium dystrophy or decompensated, at present, there is no effective treatment. In order to solve this problem, a new type posterior integral glaucoma valve with IOP control device was designed using medical titanium alloy, and the valve model was established by Abaqus software, and the stiffness and preload of the valve were analyzed by finite element method. The results showed that the opening and closing of the valve were controlled automatically by the pressure difference between the front and back of the valve, and the opening and flow rate of the valve increase dynamically with the increase of intraocular pressure, and finally reached the set ideal IOP value of steady state.
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Humans , Finite Element Analysis , Follow-Up Studies , Glaucoma , Glaucoma Drainage Implants , Intraocular Pressure , Treatment OutcomeABSTRACT
Objective:To assess the left ventricular function and hemodynamic status in infantile pneumonia by ultrasonic cardiac output monitor (USCOM).Methods:The clinical data of 74 children with infantile pneumonia hospitalized in the Department of Pediatrics of Affiliated Hospital of North Sichuan Medical College from October 2018 to January 2020 were collected in this study, and those cases were divided into the mild pneumonia group (45 cases) and the severe pneumonia group (29 cases). USCOM was employed to measure such data of patients in both groups as heart rate (HR), flow time corrected (FTc), stroke volume variability (SVV), stroke volume index (SVI), cardiac index (CI), inotropy index(INO), and systemic vascular resistance index (SVRI). The specific values of CI and SVRI in all ages were employed to determine the hemodynamic type.According to values of CI, they were grouped into normal, high and low output; according to values of SVRI, they were grouped into normal, high and low resistance.The left ventricular function and hemodynamic status of infants with pneumonia in both groups were compared.Results:(1) In the mild pneumonia group, 42.22% of infants (19/45 cases) presented with abnormal hemodynamic status, of which 94.74% were high-output and low-resistance type.In the severe pneumonia group, 79.31%(23/29 cases) of infants presented with abnormal hemodynamic status, of which 86.96%(20/23 cases) were non-high-output and non-low-resistance type.The proportion of different hemodynamic types from high to low in order is as follows: low-output and high-resistance (39.13%), high-output and normal-resistance (26.09%), low-output and low-resistance (13.04%), and normal-output and low-resistance (8.70%). (2)Before treatment, HR, SVI, CI, INO and SVRI in the severe pneumonia group and the mild pneumonia group were (153.2±19.3) times/min, (32.0±5.8) mL/m 2, (4.3±1.0) L/(min·m 2), (1.1±0.4) W/m 2, (1 139.0±280.6) d·s·cm -5·m 2 and(140.2±13.2) times/min, (39.2±4.1) mL/m 2, (5.1±0.8) L/(min·m 2), (1.4±0.2) W/m 2, and (904.7±175.8) d·s·cm -5·m 2, respectively.SVI, CI and INO in the severe pneumonia group were lower than those in the mild pneumonia group, which indicated that the difference was statically significant (all P<0.05). HR and SVRI in the severe pneumonia group were higher than those in the mild pneumonia group, which indicated that the difference was statically significant (all P<0.05). There was no significant difference in cardiac preload between both groups before treatment ( P>0.05). HR in the severe pneumonia group after treatment[(137.6±9.3) times/min] were significantly lower than before treatment, while SVI and CI[(36.2±3.4) mL/m 2, (4.7±0.3)L/(min·m 2)] were higher than before treatment, which indicated that the differences were statistically significant (all P<0.05). Conclusions:The USCOM provided a rapid approach for the dynamic measurement of left ventricular function and hemodynamic status.As per the findings with USCOM, more infants with mild pneumonia presented with hemodynamic abnormalities, and most of them were high-output and low-resistance types.The majority of infants with severe pneumonia presented with different types of hemodynamic abnormalities, and most of them were non-high-output and non-low-resistance types, which can return to normal after treatment.
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This study aimed to explore the mechanism of Tanreqing Injection in the treatment of acute lung injury(ALI) based on network pharmacology and molecular docking. The active components and action targets of Tanreqing Injection were retrieved from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP), PubChem, and SwissTargetPrediction databases, as well as available literature reports. The ALI-related targets were obtained from the GeneCards database and then mapped with Tanreqing Injection targets. Following the construction of "drug-component-potential target" network with Cytoscape 3.6.1, the potential targets were input into STRING to yield the protein-protein interaction(PPI) network, which was plotted using Cytoscape 3.6.1. Then the screened key targets were subjected to gene ontology(GO) and Kyoto encyclopedia of genes and genomes(KEGG) enrichment analysis based on DAVID database. The top three key targets RAC-alpha serine/threonine-protein kinase(AKT1), albumin(ALB) and interleukin-6(IL6) were docked to the top three key compounds by PyMOL and AutoDock vina. A total of 58 active components of Tanreqing Injection, 597 corresponding targets and 503 common targets shared by Tanreqing Injection and ALI were fi-gured out, with the key targets AKT1, ALB and IL6 involved. GO and KEGG enrichment analysis yielded 1 445 biological processes and 148 signaling pathways, respectively. Molecular docking verified a good binding ability of the top three key targets to the top three key compounds. The analysis based on network pharmacology and molecular docking uncovered that Tanreqing Injection directly or indirectly regulated the pulmonary capillary endothelial cells and alveolar epithelial cells via anti-inflammation, thus alleviating ALI.
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Humans , Acute Lung Injury/genetics , Drugs, Chinese Herbal , Endothelial Cells , Medicine, Chinese Traditional , Molecular Docking SimulationABSTRACT
Objective:To investigate the current status of cognitive frailty among elderly patients in Urumqi and to identify its influencing factors.Methods:From March to December 2019, the elderly from 3 tertiary hospitals′ geriatrics centers in Urumqi were recruited using the general information questionnaire, FRAIL Scale, Montreal Cognitive Assessment and Clinical Dementia Rating.Results:A total of 1 006 elderly patients were surveyed, among which, 131(13.0%) cases were deemed to have developed cognitive frailty. The results of multivariate logistic regression analysis showed that age, depression, Instrumental Activities of Daily Living Scale score and diabetes were influencing factors of cognitive frailty ( P<0.001). Conclusion:The prevalence rate of cognitive frailty in elderly patients is relatively high. Medical staff should attach great importance to the assessment of cognitive frailty in elderly patients and take targeted intervention in time to prevent, slow down or reverse the onset and development of cognitive frailty.
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Edible Chinese medicine is a significant part of traditional Chinese medicine. With the concept of "disease prevention", it can be used in all stages of epidemic prevention and control. This paper introduced the current status of anti-epidemic applications of edible medicines in detoxifying by heat-clearing or blood-cooling, removing dampness and turbidity, Qi and Yin tonifying, etc. In addition, new suggestions and strategies were provided for the professionals in this aera.
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OBJECTIVE@#To study the clinical features and prognosis of childhood acute myeloid leukemia with myelodysplasia-related changes (AML-MRC).@*METHODS@#A retrospective analysis was performed on the medical data of 14 children who were diagnosed with AML-MRC from June 2014 to March 2020, including clinical features, laboratory examination results, and prognosis.@*RESULTS@#Among the 14 children with AML-MRC, there were 9 boys and 5 girls, with a median age of 11 years (range: 1-17 years), a median leukocyte count of 8.3×10@*CONCLUSIONS@#Childhood AML-MRC is often observed in boys, and AML-M5 is the most common type based on FAB classification. Such children tend to have a poor prognosis. HSCT is expected to improve the poor prognosis of children with AML-MRC. However due to the small number of cases, it is necessary to increase the number of cases for further observation.
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Adolescent , Child , Child, Preschool , Female , Humans , Infant , Male , Hematopoietic Stem Cell Transplantation , Leukemia, Myeloid, Acute/therapy , Myelodysplastic Syndromes/therapy , Prognosis , Retrospective StudiesABSTRACT
Objective To investigate the taxonomic structure and diversity of endophytic fungi from Cynanchum bungei Decne., explore the potential microbial resources and functions and provide the theoretical basis for new antitumor endophytic fungi. Methods The diversities of endophytic fungi community in different tissues, species and habitats were analyzed with traditional endophytic bacteria separation method and 18sRNA high-throughput sequencing technology. MTT assay was used to detect the cytotoxic activity of endophytic fungi from Radix Polygoni multiflori. Results 90 strains of endophytic fungi were isolated and identified from roots, stems, and leaves of C. bungei. Among them, Fusarium and Alternaria were the dominant genera. There were 8, 9 and 13 genera from roots, stems and leaves of C. bungei respectively. Among which Alternaria and Colletotrichum were the common genera in different tissues. Further studies showed that 13 endophytic fungi of C.bungei had good anti-tumor activity in vitro, accounting for 14.4% of the total genera. Among them, A. tenuissima LTJ2 and A. alternata LTJ6 had significant anti-tumor activity. Conclusion The endophytic fungi in Cynanchum bungei Decne. have rich diversity. Some strains have significant anti-tumor activity，which can be potential resources for the development of new antitumor agents.
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Objective To evaluate the anti-inflammatory effects of LCA, which is the active component from Litsea cubeba (Lour.) Pers. Methods Pharmacodynamic evaluations of ear swelling and cotton ball granuloma models were used in animal experiments. In vitro experiment, lipopolysaccharide (LPS) stimulated monocyte macrophage RAW264.7 cells were used to evaluate the anti-inflammatory activity of LCA by detecting the secretions of nitric oxide (NO), tumor necrosis factor-α (TNF-α), the expressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein. Results In ear swelling experiment, the extent of ear swelling was significantly lower in the LCA treated group than the model group. The inhibition rate was greater in the high LCA concentration group than the positive drug group. In addition, LCA reduced the weight of cotton ball granuloma markedly. At the cell level, LCA significantly inhibited the secretions of NO, TNF-α and reduced the expressions of iNOS and COX-2 in LPS-stimulated RAW 264.7 cells. Conclusion LCA has significant anti-inflammatory effects in vitro and in vivo. The further studies are warranted for the development of anti-inflammatory drugs.
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Background@#Very few studies have been conducted regarding the optimal time interval between hysteroscopic adhesiolysis and the embryo transfer (ET). Investigation of this optimal time may be helpful for assisted reproductive technology. Therefore, we investigated effects of the interval between hysteroscopic adhesiolysis and ET upon in vitro fertilization (IVF) cycle outcomes.@*Methods@#Patients were recruited between January 2014 and September 2017 at the Reproductive Hospital Affiliated to Shandong University. Patients who were diagnosed with intra-uterine adhesion (IUA) and underwent hysteroscopic adhesiolysis before fresh IVF-ET or intra-cytoplasmic sperm injection cycles were classified into three groups according to the interval between hysteroscopic adhesiolysis and ET: less than 90 days (Group 1), 90 to 180 days (Group 2), and greater than 180 days (Group 3). Baseline characteristics, controlled ovarian stimulation (COS) response, and pregnancy outcomes after ET were compared. Analysis of variance or non-parametric tests were used to test numerical data. The Pearson’s Chi-squared test was used to test categorical data.@*Results@#A total of 312 patients were recruited as follows: 112 in Group 1, 137 in Group 2, and 63 in Group 3. There were no differences in baseline and COS characteristics among the three groups. The live-birth rate in Group 2 (40.1%) was significantly higher than that in Group 1 (17.9%; χ2 = 14.545, P < 0.001). There were no significant differences in the rates of biochemical, ongoing, and clinical pregnancy, and biochemical and clinical pregnancy abortion, as well as stillbirth among the groups. In the mild IUA patients, the live-birth rate was significantly higher in Group 2 (42.6%) compared with Group 1 (22%; χ2 = 8.413, P = 0.004). In the moderate IUA patients, Group 2 (35.7%) had a higher frequency of live births than Group 1 (6.7%; χ2 = 8.187, P = 0.004).@*Conclusions@#The optimal waiting period for fresh ET after hysteroscopic adhesiolysis was 90 to 180 days in the current study.
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BACKGROUND@#Very few studies have been conducted regarding the optimal time interval between hysteroscopic adhesiolysis and the embryo transfer (ET). Investigation of this optimal time may be helpful for assisted reproductive technology. Therefore, we investigated effects of the interval between hysteroscopic adhesiolysis and ET upon in vitro fertilization (IVF) cycle outcomes.@*METHODS@#Patients were recruited between January 2014 and September 2017 at the Reproductive Hospital Affiliated to Shandong University. Patients who were diagnosed with intra-uterine adhesion (IUA) and underwent hysteroscopic adhesiolysis before fresh IVF-ET or intra-cytoplasmic sperm injection cycles were classified into three groups according to the interval between hysteroscopic adhesiolysis and ET: less than 90 days (Group 1), 90 to 180 days (Group 2), and greater than 180 days (Group 3). Baseline characteristics, controlled ovarian stimulation (COS) response, and pregnancy outcomes after ET were compared. Analysis of variance or non-parametric tests were used to test numerical data. The Pearson's Chi-squared test was used to test categorical data.@*RESULTS@#A total of 312 patients were recruited as follows: 112 in Group 1, 137 in Group 2, and 63 in Group 3. There were no differences in baseline and COS characteristics among the three groups. The live-birth rate in Group 2 (40.1%) was significantly higher than that in Group 1 (17.9%; χ = 14.545, P < 0.001). There were no significant differences in the rates of biochemical, ongoing, and clinical pregnancy, and biochemical and clinical pregnancy abortion, as well as stillbirth among the groups. In the mild IUA patients, the live-birth rate was significantly higher in Group 2 (42.6%) compared with Group 1 (22%; χ = 8.413, P = 0.004). In the moderate IUA patients, Group 2 (35.7%) had a higher frequency of live births than Group 1 (6.7%; χ = 8.187, P = 0.004).@*CONCLUSIONS@#The optimal waiting period for fresh ET after hysteroscopic adhesiolysis was 90 to 180 days in the current study.
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Objective To determine the contents of total flavonoids and xanthohumol in hop from 29 different countries and regions .Methods Rutin colorimetric method was used to determine the content of total flavonoids .HPLC-UV method was established for the determination of xanthohumol in hops .HPLC method was performed by Dikma Technologies Diamonsil C18 (250 mm × 4 .6 mm ,5 μm ) column with mobile phase acetonitrile-1％ glacial acetic acid solution at the flow rate of 1 .0 ml/min .The column temperature was 25 ℃ .The detection wavelength was 370 nm .Results The equation of linear re-gression of total flavonoids was A=30 .345C+0 .0168 ,r=0 .9999 .The equation of linear regression of xanthohumol was A=55446 C+9040 .5 ,r=0 .9999 .Their linear ranges were respectively 20 .2-404 .0 μg/ml ,2 .152-43 .040 μg/ml ,which indica-ted a good linear relationship .The RSDs of precision and repeatability were less than 2％ .The average recoveries of flavonoids and xanthohumol were respectively 102 .71％ and 100 .21％ .Conclusion The contents of total flavonoids and xanthohumol in different hops varieties are significantly different and the import hops was better than the domestic hops in this study .
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Aim To establish a rapid method to efficiently iso-late mononuclear cells from central nervous system ( CNS) tis-sues of mice that can be effectively utilized for identification of various immune cell populations in a single sample by flow cy-tometry. Methods For defining the feasibility and practicality of the method, wild-type C57BL/6 mice and two mouse models of CNS disease including EAE mice and APP/PS1 mice were used in this study. After the collection and homogenization of the brain and spinal cord tissues respectively, the mononuclear cells were isolated by spinning the 70% -30% Percoll gradients. Cell activities were detected by trypan blue staining, and the im-mune population that infiltrated CNS was identified by flow cy-tometry. Results The results of trypan blue staining showed that the survival rate of the isolated cells was above 90% in all groups. Flow cytometry analysis showed that the relative num- bers of lymphocytes infiltrating CNS of EAE and AD mice in-creased significantly compared with wild-type C57BL/6 mice. In addition, the relative numbers of Th1 and Th17 cell subsets me-diating the inflammatory response also increased significantly, while the decreased regulatory T cells frequency was observed in the two mouse models of CNS disease. Conclusions The cells isolated by the 70% ~30% Percoll gradients centrifugation can be effectively utilized for the identification of various immune cell populations in a single sample by flow cytometry. The meth-od described in this article is simple and rapid in operation and with high survival rate and activity of the cells, which can be ap-plied to the study of the mononuclear cells in CNS.
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Objective To investigate the value of strong ion gap (SIG),anion gap (AG),and the anionic gap corrected by albumin (ACAG) and lactate in evaluating the prognosis of severe pneumonia in children. Methods Pediatric patients with severe pneumonia hospitalized in the Affiliated Hospital of North Sichuan Medical College from June 2014 to June 2017 were selected as study subjects. A total of 20 death pa-tients (death group) and 59 survivors (survival group) were analyzed respectively according to their progno-sis. The data of Na + ,K + ,Cl - ,HCO -3 ,Mg2 + ,Ca2 + ,pH,PaCO2 ,P,albumin and lactate were obtained from blood gas analysis and blood biochemistry. Based on these data,ACAG was calculated by the Henderson-hasselbalach formula and SIG was calculated by the Stewart-Figge formula. Results There were significant differences in ACAG,SIG,and lactate levels between death group and survival group(P < 0. 05). The area under the ROC curve of ACAG was 0. 756,and the area under the ROC curve of SIG was 0. 936,which were larger than the area under the diagnostic reference line (P < 0. 05),the results were statistically significant. The sensitivity and specificity of ACAG was 79. 7％ and 70. 0％ respectively,and the cut off was 12. 7. The sensitivity and specificity of SIG was 81. 4％ and 95. 5％ respectively,and the cut off was 2. 7. Conclusion SIG,ACAG and lactate have the guiding value in assessing the prognosis of children with severe pneumonia. Meanwhile,SIG has a greater guiding significance for the assessment of the prognosis of children with severe pneumonia.
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This study was designed to investigate the effects of icariin on bone metabolism in osteoprotic mice induced by iron overload, the model of iron overload mice was established by intraperitoneal injection of iron dextran (100 mg·kg-1). Sixty 2-month-old C57/BL6 male mice were randomly divided into six groups, including normal control group, model group, N-acetyl-L-cysteine (NAC)-treated group, icariin (50, 100 and 200 mg·kg-1)-treated group. Except for the mice in control group, the mice were intraperitoneal injected weekly with iron dextran (100 mg·kg-1) to establish the model of iron overload mice. The NAC and icariin were suspended in 0.5% CMC-Na solution, and administered orally for six times one week according to body weight. The mice in normal group and model group were given the same volume of 0.5% CMC-Na solution. Three months later, the organs, serum and femurs of mice were collected. Serum biochemical parameters were detected with an ELISA kit, the distal femur bone density and trabecular bone microstructure were analyzed by Micro-CT, and the mechanical properties of femur were measured by universal mechanical analyzer. Compared with the normal control group, iron overload decreased the bone mineral density and deteriorated the micro-architecture structure and bone mechanical properties in femur of mice, increased the level of iron, phosphorus and activity of tartrate resistant acid phosphatase-5b (TRACP-5b), reduced the level of osteocalcin (OCN) in serum, decreased the activity of superoxide dismutase (SOD) of liver tissues, increased the content of malondialdehyde (MDA) of liver tissues. Icariin increased bone mineral density, improved the micro-architecture and mechanical properties of bone tissue, reduced the levels of iron and phosphorus, decreased the activity of TRACP-5b and enhanced the levels of OCN in serum, and also decreased the activity of MDA in liver tissue of iron overload mice. These results suggest that icariin is able to reduce bone loss and improve bone microstructure and mechanical properties in iron overload mice through regulation of bone metabolism via anti-oxidation.
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This study aimed to investigate antimicrobial susceptibility of hospital acquired Burkholderia cepacia infection in Shanxi [China] during August 2009 and December 2012. To characterize an emerging nocosomial infection. The medical records of 112 patients that were tested positive for B. cepacia were retrospectively analyzed. The K-B disk diffusion method was used to determine the drug susceptibility of the isolated strains. A hundred and fifty strains of B. cepacia were isolated from 112 patients. The sensitivity rates of B. cepacia to meropenem, imipenem, cotrimoxazole, minocycline and ceftazidime were 65.7%, 14.3%, 76.0%, 68.1% and 74.1%, respectively. All patients suffered from more than two underlying diseases, 89 [79.5%] from another bacterial infection and 92 [82.1%] with indwelling catheter. All patients were given antibiotics, including 62 patients that received carbapenem antibiotics. The average duration of hospitalization before detection of B. cepacia was 31+/-24 days, after which 65 patients [58.0%] improved, 22 [19.0%] died, 8 [7.1%] quit the therapy, and 17 [15.2%] were discharged after full recovery. The prevalence of hospital acquired B. cepacia infection and drug-resistance in the hospital is reported and risk factor exploration requires further study