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1.
Front Endocrinol (Lausanne) ; 15: 1327903, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38846495

RESUMO

Objectives: To research the connection between the indexes of the indexes of triglyceride-glucose (TyG) combined with obesity indices and the initial neurological severity and short-term outcome of new-onset acute ischemic stroke. Methods: Data of patients with acute ischemic stroke admitted to the Stroke Ward of the Affiliated Hospital of Beihua University from November 2021 to October 2023, were collected. The two indexes were calculated by combining TyG and obesity indices: TyG-body mass index (TyG-BMI) and TyG-waist circumference (TyG-WC). The National Institute of Health Stroke Scale (NIHSS) was used to assess and group patients with neurological deficits within 24 hours of admission: mild stroke (NIHSS ≤5) and moderate-severe stroke (NIHSS >5). Short-term prognosis was evaluated using the modified Rankin Scale (mRS) at discharge or 14 days after onset of the disease and grouped: good outcome (mRS ≤2) and poor outcome (mRS >2). According to the quartiles of TyG-BMI and TyG-WC, the patients were placed into four groups: Q1, Q2, Q3 and Q4. Multi-factor logistic regression analysis was utilized to evaluate the correlation of TyG-BMI and TyG-WC with the severity and short-term outcome. Results: The study included 456 patients. After adjusting for multiple variables, the results showed that compared with the quartile 1, patients in quartile 4 of TyG-BMI had a reduced risk of moderate-severe stroke [Q4: OR: 0.407, 95%CI (0.185-0.894), P = 0.025]; Patients in quartiles 2, 3 and 4 of TyG-BMI had sequentially lower risk of short-term adverse outcomes [Q2: OR: 0.394, 95%CI (0.215-0.722), P = 0.003; Q3: OR: 0.324, 95%CI (0.163-0.642), P = 0.001; Q4: OR: 0.158, 95%CI (0.027-0.349), P <0.001]; Patients in quartiles 3 and 4 of TyG-WC had sequentially lower risk of moderate-severe stroke [Q3: OR: 0.355, 95%CI (0.173-0.728), P = 0.005; Q4: OR: 0.140, 95%CI (0.056-0.351), P <0.001]; Patients in quartiles 3 and 4 of TyG-WC had sequentially lower risk of short-term adverse outcomes [Q3: OR: 0.350, 95%CI (0.175-0.700), P = 0.003; Q4: OR: 0.178, 95%CI (0.071-0.451), P <0.001]. Conclusions: TyG-WC and TyG-BMI were correlated with the severity and short-term outcome of new-onset acute ischemic stroke. As TyG-WC and TyG-BMI increased, stroke severity decreased and short-term outcome was better.


Assuntos
Glicemia , Índice de Massa Corporal , AVC Isquêmico , Índice de Gravidade de Doença , Triglicerídeos , Humanos , Masculino , Feminino , AVC Isquêmico/sangue , Pessoa de Meia-Idade , Idoso , Triglicerídeos/sangue , Prognóstico , Glicemia/análise , Glicemia/metabolismo , Circunferência da Cintura , Obesidade/sangue , Obesidade/complicações
2.
Sci Total Environ ; 933: 173065, 2024 Jul 10.
Artigo em Inglês | MEDLINE | ID: mdl-38723969

RESUMO

Arbuscular mycorrhizal fungi (AMF) increase the ability of plants to obtain nitrogen (N) from the soil, and thus can affect emissions of nitrous oxide (N2O), a long-lived potent greenhouse gas. However, the mechanisms underlying the effects of AMF on N2O emissions are still poorly understood, particularly in agroecosystems with different forms of N fertilizer inputs. Utilizing a mesocosm experiment in field, we examined the effects of AMF on N2O emissions via their influence on maize root traits and denitrifying microorganisms under ammonia and nitrate fertilizer input using 15N isotope tracer. Here we show that the presence of AMF alone or both maize roots and AMF increased maize biomass and their 15N uptake, root length, root surface area, and root volume, but led to a reduction in N2O emissions under both N input forms. Random forest model showed that root length and surface area were the most important predictors of N2O emissions. Additionally, the presence of AMF reduced the (nirK + nirS)/nosZ ratio by increasing the relative abundance of nirS-Bradyrhizobium and Rubrivivax with ammonia input, but reducing nosZ-Azospirillum, Cupriavidus and Rhodopseudomonas under both fertilizer input. Further, N2O emissions were significantly and positively correlated with the nosZ-type Azospirillum, Cupriavidus and Rhodopseudomonas, but negatively correlated with the nirS-type Bradyrhizobium and Rubrivivax. These results indicate that AMF reduce N2O emissions by increasing root length to explore N nutrients and altering the community composition of denitrifiers, suggesting that effective management of N fertilizer forms interacting with the rhizosphere microbiome may help mitigate N2O emissions under future N input scenarios.


Assuntos
Desnitrificação , Micorrizas , Óxido Nitroso , Raízes de Plantas , Microbiologia do Solo , Solo , Micorrizas/fisiologia , Óxido Nitroso/análise , Raízes de Plantas/microbiologia , Solo/química , Zea mays , Fertilizantes , Poluentes Atmosféricos/análise
3.
Front Endocrinol (Lausanne) ; 13: 1024398, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36531467

RESUMO

Objective: To explore the relationship of hypertriglyceridemic waist phenotype (HTWP) with initial neurological severity and etiologic subtypes in patients with acute ischemic stroke. Methods: The data for this study were collected from hospitalized patients within 72 h of acute ischemic stroke onset at the Department of Neurology of the Affiliated Hospital of Beihua University from 1 July 2020 to 30 June 2022. The initial neurological severity was assessed by the National Institute of Health Stroke Scale (NIHSS) on the day of admission: NIHSS <6 was defined as mild stroke, and NIHSS ≥6 as moderate to severe stroke. HTWP was defined by fasting serum triglycerides ≥1.7 mmol/L and waist circumference ≥90 cm in men and ≥80 cm in women. Differentiation of etiologic subtypes was based on the method reported in the Trial of Org 10 172 in Acute Stroke Treatment. Multivariate logistic regression analysis was used to analyze the association of HTWP with initial neurological severity and etiologic subtypes. Results: The study included 431 patients. Compared with the normal waist-normal blood triglyceride group, patients with HTWP had reduced risks of moderate to severe stroke [odds ratio (OR): 0.384, 95% confidence interval (CI): 0.170-0.869; P = 0.022]. In addition, the risk of small-artery occlusion stroke was 2.318 times higher in the HTWP group than in the normal triglyceride-normal waist (NWNT) group (OR: 2.318, 95% CI: 1.244-4.319; P = 0.008). Conclusion: Initial neurological severity was less severe in patients with HTWP, and HTWP was associated with an increased risk of small-artery occlusion stroke.


Assuntos
Cintura Hipertrigliceridêmica , AVC Isquêmico , Acidente Vascular Cerebral , Feminino , Humanos , Cintura Hipertrigliceridêmica/complicações , AVC Isquêmico/complicações , Fatores de Risco , Acidente Vascular Cerebral/complicações , Triglicerídeos , Fenótipo
4.
Curr Neurovasc Res ; 19(2): 203-209, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35638544

RESUMO

OBJECTIVE: To our knowledge, no previous studies have investigated the impact of stroke severity on the smoking paradox after intravenous thrombolysis (IVT). We aimed to explore the contribution of stroke severity to the association between smoking and stroke prognosis after IVT. METHODS: We enrolled consecutive patients who received IVT within 4.5 hours from stroke onset. A logistic regression model was used to estimate the unadjusted and adjusted odds ratios (ORs) with their 95% confidence intervals (CIs) for poor functional outcome and mortality at 3 months. RESULTS: Among patients with moderate stroke, smokers experienced a lower risk of 3-month poor outcomes than non-smokers (33.0% vs. 44.4%, unadjusted OR: 0.616; 95% CI: 0.402-0.945). However, among those with severe stroke, smokers had a higher risk of 3-month poor outcomes than non-smokers (81.6% vs. 55.9%, unadjusted OR: 3.496; 95% CI: 1.207-10.127). After adjustment, the negative correlation between smoking and 3-month poor outcome following IVT lost statistical significance in patients with moderate stroke (OR: 0.677 [95% CI: 0.418-1.097]). However, smoking remained a risk factor for 3-month poor outcomes in patients with severe stroke (OR: 4.216 [95% CI: 1.236-14.385]). We also observed a significant interaction between smoking and stroke severity with regard to the risk of poor functional outcomes (p=0.023). However, no such interaction influenced mortality (p=0.901). CONCLUSION: Stroke severity affects the association between smoking and 3-month clinical functional outcomes following IVT.


Assuntos
Isquemia Encefálica , Acidente Vascular Cerebral , Humanos , Terapia Trombolítica/efeitos adversos , Resultado do Tratamento , Acidente Vascular Cerebral/etiologia , Modelos Logísticos , Fumar , Fibrinolíticos/uso terapêutico , Isquemia Encefálica/tratamento farmacológico
5.
Dis Markers ; 2022: 5621441, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35242245

RESUMO

OBJECTIVE: Tumor microenvironment as an important element of malignancy could help predict cancer prognosis and therapeutic response; thus, a prognostic landscape map of the tumor microenvironment in luminal B breast cancers should be developed. METHODS: The GEO and TCGA databases were employed to retrieve clinical follow-up data and expression profiles of luminal B breast cancer. CIBERSORT was applied to assess the infiltration of the tumor microenvironment of 209 patients and to construct tumor microenvironment-based subtypes of luminal B breast cancer. We also conducted Cox multivariate regression analysis to select features that could be used to develop a microenvironment signature for cancer. Samples were categorized as having low and high TME scores according to the median TME score. The correlations of prognosis and TME score, expression levels of immune factors and genomic variation, and clinical features were further investigated. RESULTS: We found that high TME scores were correlated with poor prognosis. The current findings showed that the expressions of multiple immune-related genes, including CXCL9, CXCL10, GZMB, and PDCD1LG2, were upregulated in cancer with high TME scores. The high-risk group showed lower TP53 gene mutation frequency as opposed to that of the low-risk group. For the purpose of developing a TME scoring system, the TME infiltration levels of 209 patients with luminal B breast cancer from TCGA were comprehensively analyzed. CONCLUSIONS: Our analysis revealed that the TME score was an indicator of patients' response to immune checkpoint modulators and an effective prognostic biomarker. TME scoring improves current immunotherapy on luminal B breast cancer.


Assuntos
Neoplasias da Mama/genética , Bases de Dados Genéticas , Perfilação da Expressão Gênica , Prognóstico , Microambiente Tumoral , Idoso , Neoplasias da Mama/imunologia , Neoplasias da Mama/patologia , Feminino , Genes p53 , Humanos , Imunoterapia , Pessoa de Meia-Idade , Mutação/genética , Linfócitos T/imunologia , Microambiente Tumoral/genética , Microambiente Tumoral/imunologia
6.
Curr Neurovasc Res ; 18(3): 324-332, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34645376

RESUMO

BACKGROUND: Cardiometabolic Index (CMI) was associated with several risk factors for stroke; however, few studies assessed the role of CMI in stroke risk. OBJECTIVE: This study aimed to assess the association between CMI and stroke in a population- based cross-sectional study. METHODS: This study included 4445 general residents aged ≥40 years selected by multistage stratified random cluster sampling. CMI was calculated as the product of the ratio of waist circumference to height (WHtR) and the ratio of triglyceride levels to high-density lipoprotein cholesterol levels (TG/HDL-C). Participants were categorized according to CMI quartiles: quartile 1 (Q1), quartile 2 (Q2), quartile 3 (Q3), and quartile 4 (Q4). Multivariate logistic regression analysis and receiver operating characteristic (ROC) curves were used to assess the association between CMI and stroke. RESULTS: A total of 4052 participants were included in the study, with an overall stroke prevalence of 7.2%. The prevalence of stroke increased with CMI quartiles, ranging from 4.4% to 9.2% (p for trend <0.001). Compared with Q1, stroke risk for Q2, Q3, and Q4 were 1.550-, 1.693-, and 1.704- fold, respectively. The area under the ROC curve (AUC) (95% CI) was 0.574 (0.558-0.589) for CMI, 0.627 (0.612-0.642) for WHtR, 0.556 (0.540-0.571) for TG/HDL-C. CMI was inferior to WHtR (p=0.0024), but CMI had a marginal advantage over TG/HDL-C (p<0.0001) in terms of its stroke discrimination ability. CONCLUSION: Although there was a strong and independent association between CMI and stroke in the general population, CMI had limited discriminating ability for stroke. Thus, new parameters should be developed.


Assuntos
Acidente Vascular Cerebral , Adulto , Índice de Massa Corporal , Estudos Transversais , Humanos , Prevalência , Fatores de Risco , Acidente Vascular Cerebral/epidemiologia , Circunferência da Cintura
7.
Physiol Meas ; 42(7)2021 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-34198278

RESUMO

Objective.Hematoma expansion is closely associated with adverse functional outcomes in patients with intracerebral hemorrhage (ICH). Prediction of hematoma expansion would therefore be of great clinical significance. We therefore attempted to predict hematoma expansion using a dual-modal machine learning (ML) strategy which combines information from non-contrast computed tomography (NCCT) images and multiple clinical variables.Approach.We retrospectively identified 140 ICH patients (57 with hematoma expansion) with 5616 NCCT images of hematoma (2635 with hematoma expansion) and 10 clinical variables. The dual-modal ML strategy consists of two steps. The first step is to derive a mono-modal predictor from a deep convolutional neural network using solely NCCT images. The second step is to achieve a dual-modal predictor by combining the mono-modal predictor with 10 clinical variables to predict hematoma growth using a multi-layer perception network.Main results. For the mono-modal predictor, the best performance was merely 69.5% in accuracy with solely the NCCT images, whereas the dual-modal predictor could boost the accuracy greatly to be 86.5% by combining clinical variables.Significance.To our knowledge, this is the best performance from using ML to predict hematoma expansion. It could be potentially useful as a screening tool for high-risk patients with ICH, though further clinical tests would be necessary to show its performance on a larger cohort of patients.


Assuntos
Hemorragia Cerebral , Hematoma , Hemorragia Cerebral/diagnóstico por imagem , Hematoma/diagnóstico por imagem , Humanos , Aprendizado de Máquina , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
8.
J Diabetes Res ; 2021: 8812431, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34056007

RESUMO

BACKGROUNDS: The prevalence of diabetes has increased with the increase of obesity, and finding indicators to predict diabetes risk has become an urgent need. The purpose of this study is to compare the correlation between four anthropometric indices and the prevalence of diabetes. METHODS: A total of 4052 participants aged 40 years and above were selected in Dehui City, Jilin Province, using a multistage stratified whole group sampling method. Face-to-face interviews and physical examinations were conducted. Multivariate logistic analysis was used. The values of BMI, waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR) were divided into quartiles (Q1: <25%; Q2: ~25%; Q3: ~50%; and Q4: ~75%). The median of each quartile was used for a linear trend test. RESULTS: For all four body fat-measuring indices of body mass index (adjusted OR: 3.300, 95% CI: 2.370, 4.595), WC (adjusted OR: 5.131, 95% CI: 3.433, 7.669), WHR (adjusted OR: 3.327, 95% CI: 2.386, 4.638), and WHtR (adjusted OR: 5.959, 95% CI: 3.922, 9.054), patients in the highest quartile were more likely to have diabetes than those in the lowest quartile. The areas under the curve of WHtR, WC, WHR, and BMI for diabetes were 0.683, 0.669, 0.654, and 0.629, respectively. In female participants, the areas under the curve of the waist-height ratio and WC were 0.710 (95% CI: 0.679-0.741) and 0.701 (95% CI: 0.670-0.732), respectively. CONCLUSIONS: The WC and WHtR were more closely related to diabetes than BMI and WHR among study participants ≥ 40 years of age, especially in females.


Assuntos
Índice de Massa Corporal , Diabetes Mellitus/diagnóstico , Obesidade/diagnóstico , Circunferência da Cintura , Razão Cintura-Estatura , Relação Cintura-Quadril , Adulto , Fatores Etários , Idoso , China/epidemiologia , Estudos Transversais , Diabetes Mellitus/epidemiologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Obesidade/epidemiologia , Valor Preditivo dos Testes , Prevalência , Medição de Risco , Fatores de Risco , Fatores Sexuais
9.
Zhongguo Fei Ai Za Zhi ; 24(3): 167-172, 2021 Mar 20.
Artigo em Chinês | MEDLINE | ID: mdl-33819966

RESUMO

BACKGROUND: Among malignant tumors, lung cancer has the highest mortality rate. Small cell lung cancer (SCLC) is a kind of malignant lung cancer. Its doubling time is very fast. Patients are prone to drug resistance during treatment, and their condition often deteriorates rapidly after recurrence. Except for topotecan, there is a lack of effective second-line single-agent chemotherapy. This study aims to analysis the efficacy and safety of irinotecan (CPT-11) in the second-line treatment of refractory and relapsed SCLC. METHODS: A total of 107 SCLC patients were collected from the Department of Oncology, Jilin Guowen Hospital, who were diagnosed from April 2012 to March 2020, relapsed within 6 months after first-line treatment, and received second-line chemotherapy with single-agent CPT-11. Follow-up until November 2020, calculate the patient's progression free survival (PFS) and overall survival (OS), and summarize the effects and adverse reactions of CPT-11 chemotherapy. RESULTS: The patient's median PFS was 3.8 (3.4-4.4) months, median OS was 8.1 (6.5-10.9) months, objective response rate (ORR) was 16.82% (18/107), and DCR was 55.14% (59/107). The incidence of grade 3-4 adverse reactions in patients was relatively low. Among them, neutropenia was 13.08%, delayed diarrhea was 7.48%, nausea and vomiting was 17.76%, and liver function impairment was 6.54%. The influencing factors of PFS in single-agent CPT-11 second-line chemotherapy were gender (P=0.001), NSE (P=0.029), and effusion (P=0.040). While the influencing factors of OS were NSE level only (P=0.033). CONCLUSIONS: For patients with refractory relapsed SCLC, CPT-11 single-agent second-line chemotherapy has a certain effect, is well tolerated, and is worthy of promotion.
.


Assuntos
Antineoplásicos/administração & dosagem , Irinotecano/administração & dosagem , Neoplasias Pulmonares/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Carcinoma de Pequenas Células do Pulmão/tratamento farmacológico , Idoso , Antineoplásicos/efeitos adversos , Feminino , Humanos , Irinotecano/efeitos adversos , Neoplasias Pulmonares/mortalidade , Masculino , Pessoa de Meia-Idade , Intervalo Livre de Progressão , Recidiva , Carcinoma de Pequenas Células do Pulmão/mortalidade
10.
BMJ Open ; 11(3): e038671, 2021 03 24.
Artigo em Inglês | MEDLINE | ID: mdl-33762227

RESUMO

OBJECTIVES: Low levels of income and education are risk factors for metabolic syndrome in the population of Northeast China, which has a high incidence of metabolic syndrome and cardiovascular diseases. This study aimed to determine sex-based differences associated with the prevalence of and risk factors for metabolic syndrome among people older than 40 years in Northeast China; this has not been previously investigated. DESIGN: This study analysed a portion of the large sample data of the national cross-sectional screening of China from 2016. Metabolic syndrome was defined as the presence of any three of the following five risk factors: abnormal waist circumference; high levels of triglycerides, high-density lipoprotein cholesterol or fasting plasma glucose; and elevated blood pressure. Multiple regression analysis was used to investigate sex-based differences in the prevalence of, and risk factors for metabolic syndrome. SETTING: The study was conducted in Dehui City, Jilin Province, China. PARTICIPANTS: A total of 4052 participants with complete questionnaire information and laboratory examination results were included. RESULTS: The prevalence of metabolic syndrome was 50.1% overall (38.4% in men and 57.9% in women; p<0.001). High body mass index and hip circumference were associated with metabolic syndrome in both sexes. In addition, physical inactivity (OR and 95% CI 1.44 (1.06 to 1.97); p=0.022) in men and advanced age (OR and 95% CI 1.54 (1.15 to 2.04); p=0.003) in women were factors associated with metabolic syndrome. Women with junior high school education or above and living in rural areas were less likely to have metabolic syndrome. For men, education and rural or urban living had no association with metabolic syndrome. CONCLUSIONS: The risk factors for metabolic syndrome have similarities and differences in different sexes; thus, the prevention and treatment of metabolic syndrome should be based on these sex differences.


Assuntos
Síndrome Metabólica , Acidente Vascular Cerebral , Adulto , Índice de Massa Corporal , China/epidemiologia , Estudos Transversais , Feminino , Humanos , Masculino , Síndrome Metabólica/epidemiologia , Prevalência , Fatores de Risco , Caracteres Sexuais , Fatores Sexuais
11.
Intervirology ; : 1-7, 2021 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-33401269

RESUMO

INTRODUCTION: Epidemic Japanese encephalitis is one of the most important zoonotic diseases that cause central nervous system damage. The vaccination has become the most effective and economical measure for its control. Hence, real-time monitoring of Japanese encephalitis virus (JEV) proliferation is crucial to optimize virus inoculation, culturing conditions, and virus harvest time. METHODS: The proliferation dynamics of JEV in BHK-21 cells was studied by combining the established quantitative PCR method with the conventional TCID50 assay in this study. RESULTS: The proliferation curve determined by the 2 methods has a definite parallel relationship, but the quantitative real-time PCR method (4 h) is faster and more sensitive than the TCID50 method (3-4 days). The determination results of TCID50 showed that the highest viral titer was 105.44 TCID50/0.1 mL and 104.86 TCID50/0.1 mL in cell suspension and culture supernate, respectively, while the virus RNA copies reached the peak at 1.0 × 107.5 copies/µL and 1.0 × 105.6 copies/µL in cell suspension and culture supernate, respectively. CONCLUSION: The comprehensive analysis showed that the best time for JEV proliferation in BHK-21 cell was 60 h post infection.

12.
Biotechnol Appl Biochem ; 68(3): 547-553, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32458417

RESUMO

Purification of the enveloped virus poses a challenge as one must retain viral infectivity to preserve immunogenicity. The traditional process of virus purification is time-consuming, laborious and hard to scale up. Here, a rapid, simple and extensible laboratory program for the purification of Japanese encephalitis virus (JEV) was developed by using differential centrifugation, ultrafiltration, Sepharose 4 fast flow gel chromatography, and CaptoTM Core 700 chromatography. The entire process recovered 61.64% of the original virus, and the purified virus particles maintained good activity and immunogenicity. The purification process described has potential application in large-scale production of high-purity JEV.


Assuntos
Vírus da Encefalite Japonesa (Espécie)/isolamento & purificação , Animais , Células Cultivadas , Centrifugação , Cromatografia , Cricetinae , Ultrafiltração , Vírion/química , Vírion/isolamento & purificação
13.
World Neurosurg ; 146: 285-286, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33227528

RESUMO

Hydatid disease most frequently occurs in the liver. This article presents a case of spinal cord compression caused by vertebral hydatidosis with typical imaging characteristics and pathologic findings, which is rarely involved in the hydatidosis. The patient was successfully treated with surgical excision combined with antiparasitic therapy.


Assuntos
Equinococose/complicações , Equinococose/diagnóstico por imagem , Doenças da Coluna Vertebral/diagnóstico por imagem , Doenças da Coluna Vertebral/parasitologia , Equinococose/patologia , Feminino , Humanos , Pessoa de Meia-Idade , Compressão da Medula Espinal/etiologia , Doenças da Coluna Vertebral/patologia
14.
J Atheroscler Thromb ; 28(4): 356-364, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-32595195

RESUMO

AIM: Hemorrhagic transformation is the major complication of intravenous thrombolysis. Calcification is used widely as an imaging indicator of atherosclerotic burden and cerebrovascular function. The relationship between intracranial calcification and hemorrhagic transformation has not been explored fully. We aimed to identify and quantify calcification in the main cerebral vessels to investigate the correlations between quantitative calcification parameters, hemorrhagic transformation, and prognosis. METHODS: Acute, non-cardiogenic, ischemic stroke patients with anterior circulation who received intravenous thrombolysis therapy in the First Hospital of Jilin University were retrospectively and consecutively included. All included patients underwent a baseline CT before intravenous thrombolysis and a follow-up CT at 24 hours. A third-party software, ITK-SNAP, was used to segment and measure the calcification volume. A vascular non-bone component with a CT value >130 HU was considered calcified. Hemorrhagic transformation was determined based on the ECASS II classification criteria. RESULTS: The study included 242 patients, 214 of whom were identified as having calcification. Thirty-one patients developed hemorrhagic transformation. The calcification volume on the lesion side (0.1ml) was associated with hemorrhagic transformation (p=0.004, OR=1.504, 95% CI: 1.140-1.985). Ninety-six patients had poor prognoses. The poor prognosis group had more calcified vessels than the good prognosis group (p=0.014, OR=1.477, 95% CI: 1.083-2.015). CONCLUSIONS: The arterial calcification volume on the lesion side is associated with hemorrhagic transformation after thrombolysis. The higher the number of calcified vessels, the greater the risk of poor prognosis.


Assuntos
Infarto Encefálico , Artérias Cerebrais , AVC Isquêmico , Terapia Trombolítica/efeitos adversos , Tomografia Computadorizada por Raios X/métodos , Calcificação Vascular/diagnóstico por imagem , Infarto Encefálico/diagnóstico , Infarto Encefálico/epidemiologia , Infarto Encefálico/terapia , Artérias Cerebrais/diagnóstico por imagem , Artérias Cerebrais/patologia , China/epidemiologia , Feminino , Hemorragia/diagnóstico , Hemorragia/etiologia , Humanos , AVC Isquêmico/diagnóstico , AVC Isquêmico/epidemiologia , AVC Isquêmico/terapia , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Medição de Risco/métodos , Fatores de Risco , Terapia Trombolítica/métodos
15.
Bioresour Bioprocess ; 8(1): 42, 2021 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38650280

RESUMO

Photorespiration consumes fixed carbon and energy generated from photosynthesis to recycle glycolate and dissipate excess energy. The aim of this study was to investigate whether we can use the energy that is otherwise consumed by photorespiration to improve the production of chemicals which requires energy input. To this end, we designed and introduced an isoprene synthetic pathway, which requires ATP and NADPH input, into the cyanobacterium Synechocystis sp. 6803. We then deleted the glcD1 and glcD2 genes which encode glycolate dehydrogenase to impair photorespiration in isoprene-producing strain of Synechocystis. Production of isoprene in glcD1/glcD2 disrupted strain doubled, and stoichiometric analysis indicated that the energy saved from the impaired photorespiration was redirected to increase production of isoprene. Thus, we demonstrate we can use the energy consumed by photorespiration of cyanobacteria to increase the energy-dependent production of chemicals from CO2.

16.
Curr Neurovasc Res ; 17(5): 660-666, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33243121

RESUMO

OBJECTIVE: An increased leukocyte count is positively associated with poor outcomes and all-cause mortality in coronary heart disease, cancer, and ischemic stroke. The role of leukocyte count in acute ischemic stroke (AIS) remains important. We aimed to investigate the association between admission leukocyte count before thrombolysis with recombinant tissue plasminogen activator (rt-PA) and 3-month outcomes in AIS patients. METHODS: This retrospective study included consecutive AIS patients who received intravenous (IV) rt-PA within 4.5 h of symptom onset between January 2016 to December 2018. We assessed outcomes, including short-term hemorrhagic transformation (HT), 3-month mortality, and functional independence (modified Rankin Scale [mRS] score of 0-2 or 0-1). RESULTS: Among 579 patients who received IV rt-PA, 77 (13.3%) exhibited HT at 24 h, 43 (7.4%) died within 3 months, and 211 (36.4%) exhibited functional independence (mRS score: 0-2). Multivariable logistic regression revealed admission leukocyte count as an independent predictor of good and excellent outcomes at 3 months. Each 1-point increase in admission leukocyte count increased the odds of poor outcomes at 3 months by 7.6% (mRS score: 3-6, odds ratio [OR]: 1.076, 95% confidence interval [CI]: 1.003-1.154, p=0.041) and 7.8% (mRS score: 2-6, OR: 1.078, 95% CI: 1.006-1.154, p=0.033). Multivariable regression analysis revealed no association between HT and 3-month mortality. Admission neutrophil and lymphocyte count were not associated with 3-- month functional outcomes or 3-month mortality. CONCLUSION: A lower admission leukocyte count independently predicts good and excellent outcomes at 3 months in AIS patients undergoing rt-PA treatment.


Assuntos
Fibrinolíticos/uso terapêutico , AVC Isquêmico/tratamento farmacológico , Terapia Trombolítica , Ativador de Plasminogênio Tecidual/uso terapêutico , Idoso , Feminino , Humanos , AVC Isquêmico/sangue , AVC Isquêmico/mortalidade , Contagem de Leucócitos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
18.
Ther Adv Neurol Disord ; 13: 1756286420953054, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-35173805

RESUMO

BACKGROUND: The aim of this study was to establish a nomogram model for individualized early prediction of the 3-month prognosis in patients with acute ischemic stroke (AIS) who were treated with intravenous recombinant tissue plasminogen activator (rt-PA) thrombolysis. METHODS: A total of 691 patients were included in this study; 564 patients were included in the training cohort, while 127 patients were included in the test cohort. The main outcome measure was a 3-month unfavorable outcome (modified Rankin Scale 3-6). To construct the nomogram model, stepwise logistic regression analysis was applied to select the significant predictors of the outcome. The discriminative performance of the model was assessed by calculating the area under the receiver operating characteristic curve (AUC-ROC). A decision curve analysis was used to evaluate prognostic value of the model. RESULTS: The initial National Institutes of Health Stroke Scale [NIHSS, odds ratio (OR), 1.35; 95% confidence interval (CI), 1.28-1.44; p < 0.001], delta NIHSS (changes in the NIHSS score from baseline to 24 h, OR, 0.75; 95% CI, 0.70-0.79; p < 0.001), hypertension (OR, 2.07; 95% CI, 1.32-3.31; p = 0.002), hyperhomocysteinemia (Hhcy, OR, 2.18; 95% CI, 1.20-4.11; p = 0.013), and the ratio of high-density lipoprotein cholesterol (HDL-C) to low-density lipoprotein cholesterol (LDL-C) (HDL-C/LDL-C, OR, 3.29; 95% CI, 1.00-10.89; p = 0.049) (N2H3) were found to be independent predictors of a 3-month unfavorable outcome from multivariate logistic regression analysis and were incorporated in the N2H3 nomogram model. The AUC-ROC of the training cohort was 0.872 (95% CI, 0.841-0.902), and the AUC-ROC of the test cohort was 0.900 (95% CI, 0.848-0.953). CONCLUSION: The study presented the N2H3 nomogram model, with initial NIHSS score, delta NIHSS, hypertension, Hhcy, and HDL-C/LDL-C as predictors. It therefore provides an individualized early prediction of the 3-month unfavorable outcome in AIS patients treated with intravenous rt-PA thrombolysis.

19.
Front Endocrinol (Lausanne) ; 11: 596811, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33551993

RESUMO

Type 2 diabetes (T2D) is a major public health disease which is increased in incidence and prevalence throughout the whole world. Insulin resistance (IR) in peripheral tissues and insufficient pancreatic ß-cell mass and function have been recognized as primary mechanisms in the pathogenesis of T2D, while recently, systemic chronic inflammation resulting from obesity and a sedentary lifestyle has also gained considerable attention in T2D progression. Nowadays, accumulating evidence has revealed extracellular vesicles (EVs) as critical mediators promoting the pathogenesis of T2D. They can also be used in the diagnosis and treatment of T2D and its complications. In this review, we briefly introduce the basic concepts of EVs and their potential roles in the pathogenesis of T2D. Then, we discuss their diagnostic and therapeutic potentials in T2D and its complications, hoping to open new prospects for the management of T2D.


Assuntos
Diabetes Mellitus Tipo 2/etiologia , Vesículas Extracelulares/patologia , Resistência à Insulina , Células Secretoras de Insulina/patologia , Animais , Diabetes Mellitus Tipo 2/patologia , Diabetes Mellitus Tipo 2/terapia , Humanos
20.
Front Neurol ; 10: 1208, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31798527

RESUMO

Primary angiitis of the central nervous system (PACNS) is a rare disorder resulting in idiopathic inflammation affecting the parenchymal and leptomeningeal vessels confined to the central nervous system (CNS), of which a tumor-like mass lesion is an even rare subtype. We described a case of PACNS initially misdiagnosed as glioblastoma. The patient was a 35 year-old female with right-sided weakness and expressive dysphasia. Brain MRI showed a tumor-like lesion highly suggestive of glioblastoma, therefor surgical removal was done. After a resection and an exhaustive workup, PACNS was ultimately diagnosed. The case illustrates a type of imaging presentation of PACNS that is often misdiagnosed as high-grade glioma. Differentiation between tumor-like PACNS lesions and actual CNS tumors is challenging due to similar MR images. To avoid unnecessary surgical interventions, we summarized previously reported mass-forming PACNS cases in adults from January 1, 2000, to December 31, 2018 and the imaging characteristics of PACNS. Some less commonly used diagnostic methods such as MR spectroscopy may also help clinicians distinguish PACNS from its mimics.

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