EC

骨坏死
  • 文章类型: Journal Article
    土壤盐渍化和盐渍危害土壤肥力和作物生产,尤其是在干旱地区。为了解决这个问题,使用生物炭与石膏结合,石灰,农家肥是改善盐害土壤的有前途的解决方案。在大麻实验中,棉棒生物炭(BC)以20吨/公顷的比例与石膏(G)结合使用,石灰(L),和农场粪便(F)的比率为5吨/公顷和10吨/公顷。这些被表示为BCG-5、BCL-5、BCF-5、BCG-10、BCL-10和BCF-10。实验使用了三种不同类型的土壤,其电导率(EC)与钠吸附比(SAR)之比为2.45:13.7、9.45:22和11.56:40。BCG-10的应用导致水稻生物量的显着改善,叶绿素含量,和整体增长。据观察,在EC:SAR(2.45:13.7)中,将BCG-10应用于土壤使膜稳定性指数增加了75%,EC:SAR(9.45:22)中的97%,与各自的对照治疗相比,EC:SAR(11.56:40)为40%。使用BCG-10后,树叶中的过氧化氢下降了29%,23%,欧共体:SAR(2.45:13.7)为21%,欧共体:SAR(9.45:22),和EC:SAR(11.56:40)土壤,相对于他们的控制,分别。BCG-10的应用导致甘氨酸甜菜碱在EC:SAR(2.45:13.7)中增加60、119和165%,欧共体:SAR(9.45:22),和EC:SAR(11.56:40)土壤。欧共体:SAR(2.45:13.7),欧共体:SAR(9.45:22),EC:SAR(11.56:40)土壤在BCG-10施用处理中的抗坏血酸含量均增加了70、109和130%。本试验结果表明,BCG-10在不同程度的盐胁迫下对水稻植株生长和生理性状的增强作用最大。这是通过降低过氧化氢水平来实现的,使植物细胞更稳定,和增加非酶活性。
    Soil salinization and sodication harm soil fertility and crop production, especially in dry regions. To combat this, using biochar combined with gypsum, lime, and farm manure is a promising solution for improving salt-affected soils. In a pot experiment, cotton stick biochar (BC) was applied at a rate of 20 t/ha in combination with gypsum (G), lime (L), and farm manure (F) at rates of 5 and 10 t/ha. These were denoted as BCG-5, BCL-5, BCF-5, BCG-10, BCL-10, and BCF-10. Three different types of soils with electrical conductivity (EC) to sodium adsorption ratio (SAR) ratios of 2.45:13.7, 9.45:22, and 11.56:40 were used for experimentation. The application of BCG-10 led to significant improvements in rice biomass, chlorophyll content, and overall growth. It was observed that applying BCG-10 to soils increased the membrane stability index by 75% in EC:SAR (2.45:13.7), 97% in EC:SAR (9.45:22), and 40% in EC:SAR (11.56:40) compared to respective control treatments. After BCG-10 was applied, the hydrogen peroxide in leaves dropped by 29%, 23%, and 21% in EC:SAR (2.45:13.7), EC:SAR (9.45:22), and EC:SAR (11.56:40) soils, relative to their controls, respectively. The application of BCG-10 resulted in glycine betaine increases of 60, 119, and 165% in EC: SAR (2.45:13.7), EC: SAR (9.45:22), and EC: SAR (11.56:40) soils. EC: SAR (2.45:13.7), EC: SAR (9.45:22), and EC: SAR (11.56:40) soils all had 70, 109, and 130% more ascorbic acid in BCG-10 applied treatment, respectively. The results of this experiment show that BCG-10 increased the growth and physiological traits of rice plants were exposed to different levels of salt stress. This was achieved by lowering hydrogen peroxide levels, making plant cells more stable, and increasing non-enzymatic activity.
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  • 文章类型: Journal Article
    目的:创建并评估三维(3D)Prompt-nnUnet模块,该模块利用基于提示的模型与3DnnUnet相结合,对术后子宫内膜癌(EC)患者进行高剂量率近距离放射治疗(HDRBT)的高风险临床目标体积(HRCTV)和风险器官(OAR)进行快速一致的自动分割。
    方法:在两个实验批次中,共获得321例计算机断层扫描(CT)扫描的HRCTV分割从321例EC患者,125例患者的OARs分割和125例CT扫描。HRCTV和OAR的训练/验证/测试次数分别为257/32/32和87/13/25。将深度学习神经网络3DPrompt-nnUnet和3DnnUnet的新颖比较应用于HRCTV和OAR分割。采用了三折交叉验证和几个定量指标,包括骰子相似系数(DSC),Hausdorff距离(HD),Hausdorff距离的第95百分位数(HD95%),和联合交集(IoU)。
    结果:Prompt-nnUnet包含两种形式的参数Predict-Prompt(PP)和Label-Prompt(LP),LP的表现与经验丰富的放射肿瘤学家最相似,优于经验不足的放射肿瘤学家。在测试阶段,对于HRCTV,LP的平均DSC值为0.96±0.02、0.91±0.02和0.83±0.07,直肠和尿道,分别。平均HD值(mm)分别为2.73±0.95、8.18±4.84和2.11±0.50。平均HD95%值(mm)分别为1.66±1.11、3.07±0.94和1.35±0.55。平均IoU分别为0.92±0.04、0.84±0.03和0.71±0.09。在新模型中观察到每个结构的描绘时间<2.35s,这可以节省临床医生的时间。
    结论:Prompt-nnUnet架构,尤其是LP,与HRCTV或OAR自动分割中的地面实况(GT)高度一致,减少观察者间的变异性,缩短治疗时间。
    OBJECTIVE: To create and evaluate a three-dimensional (3D) Prompt-nnUnet module that utilizes the prompts-based model combined with 3D nnUnet for producing the rapid and consistent autosegmentation of high-risk clinical target volume (HR CTV) and organ at risk (OAR) in high-dose-rate brachytherapy (HDR BT) for patients with postoperative endometrial carcinoma (EC).
    METHODS: On two experimental batches, a total of 321 computed tomography (CT) scans were obtained for HR CTV segmentation from 321 patients with EC, and 125 CT scans for OARs segmentation from 125 patients. The numbers of training/validation/test were 257/32/32 and 87/13/25 for HR CTV and OARs respectively. A novel comparison of the deep learning neural network 3D Prompt-nnUnet and 3D nnUnet was applied for HR CTV and OARs segmentation. Three-fold cross validation and several quantitative metrics were employed, including Dice similarity coefficient (DSC), Hausdorff distance (HD), 95th percentile of Hausdorff distance (HD95%), and intersection over union (IoU).
    RESULTS: The Prompt-nnUnet included two forms of parameters Predict-Prompt (PP) and Label-Prompt (LP), with the LP performing most similarly to the experienced radiation oncologist and outperforming the less experienced ones. During the testing phase, the mean DSC values for the LP were 0.96 ± 0.02, 0.91 ± 0.02, and 0.83 ± 0.07 for HR CTV, rectum and urethra, respectively. The mean HD values (mm) were 2.73 ± 0.95, 8.18 ± 4.84, and 2.11 ± 0.50, respectively. The mean HD95% values (mm) were 1.66 ± 1.11, 3.07 ± 0.94, and 1.35 ± 0.55, respectively. The mean IoUs were 0.92 ± 0.04, 0.84 ± 0.03, and 0.71 ± 0.09, respectively. A delineation time < 2.35 s per structure in the new model was observed, which was available to save clinician time.
    CONCLUSIONS: The Prompt-nnUnet architecture, particularly the LP, was highly consistent with ground truth (GT) in HR CTV or OAR autosegmentation, reducing interobserver variability and shortening treatment time.
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  • 文章类型: Journal Article
    子宫内膜癌是女性中最常见的肿瘤之一,在诊断后5年内生存率为83%。低雌激素血症是子宫内膜癌(EC)发展的主要危险因素,因此有两种主要类型,1型依赖雌激素,2型不依赖雌激素。手术,化疗药物,放射治疗只是治疗方案中的少数。妇科恶性肿瘤的治疗在很大程度上取决于诊断或预后预测。诊断成像数据和临床病程预测是人工智能(AI)应用的两个核心支柱。术前发现子宫内膜癌的最流行的成像技术之一是MRI,虽然这种技术只能产生定性数据。当用于对患者进行分类时,AI提高了视觉特征提取的有效性。总的来说,AI有可能提高子宫内膜癌诊断和治疗的准确性和有效性。这篇综述旨在强调AI在子宫内膜癌中的应用现状,并全面了解AI的最新进展如何帮助临床医生更好地诊断和改善子宫内膜癌的预后。尽管如此,需要额外的研究才能充分理解其优势和局限性。
    Endometrial cancer is one of the most prevalent tumours in females and holds an 83% survival rate within 5 years of diagnosis. Hypoestrogenism is a major risk factor for the development of endometrial carcinoma (EC) therefore two major types are derived, type 1 being oestrogen-dependent and type 2 being oestrogen independent. Surgery, chemotherapeutic drugs, and radiation therapy are only a few of the treatment options for EC. Treatment of gynaecologic malignancies greatly depends on diagnosis or prognostic prediction. Diagnostic imaging data and clinical course prediction are the two core pillars of artificial intelligence (AI) applications. One of the most popular imaging techniques for spotting preoperative endometrial cancer is MRI, although this technique can only produce qualitative data. When used to classify patients, AI improves the effectiveness of visual feature extraction. In general, AI has the potential to enhance the precision and effectiveness of endometrial cancer diagnosis and therapy. This review aims to highlight the current status of applications of AI in endometrial cancer and provide a comprehensive understanding of how recent advancements in AI have assisted clinicians in making better diagnosis and improving prognosis of endometrial cancer. Still, additional study is required to comprehend its strengths and limits fully.
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  • 文章类型: Journal Article
    从过滤器吸收光度计(FAP)测量得出的等效黑碳(eBC)质量浓度的可靠确定取决于将吸收系数(babs)转换为eBC的质量吸收截面(MAC)的适当量化。这项研究调查了从22个站点同时进行的元素碳(EC)和babs测量获得的MAC的时空变异性。我们比较了检索eBC的不同方法,这些方法集成了计算MAC的不同选项,包括:本地派生,从22个地点计算的中值,和特定站点的滚动MAC。使用这些方法进行校正的eBC浓度被确定为LeBC(局部MAC),MeBC(中位数MAC),和ReBC(滚动MAC)分别。由于在实验和标称MAC值之间观察到的差异,由FAP(NeBC;标称仪器MAC)和ReBC直接提供的eBC之间观察到明显的差异(高达50%以上)。在880nm处,来自12个测量计的平均MAC为7.8±3.4m2g-1,和10.6±4.7m2g-1来自637nm处的10个MAAP。实验MAC显示出显著的地点和季节依赖性,不同地区的夏季和冬季之间有不同的模式。此外,长期趋势分析显示,EC具有统计学意义(s.s.)下降趋势。有趣的是,我们表明,由于MAC的可变性,相应的校正后的eBC趋势并不独立于计算eBC的方式。NeBC和EC下降趋势在实验MAC中没有显著趋势的位点是一致的。相反,MAC显示s.s.趋势,NeBC和EC趋势不一致,而ReBC浓度遵循与EC相同的模式。这些结果强调了在从FAP得出eBC测量结果时考虑MAC变化的重要性,并强调了纳入EC观测结果以限制与eBC相关的不确定性的必要性。
    A reliable determination of equivalent black carbon (eBC) mass concentrations derived from filter absorption photometers (FAPs) measurements depends on the appropriate quantification of the mass absorption cross-section (MAC) for converting the absorption coefficient (babs) to eBC. This study investigates the spatial-temporal variability of the MAC obtained from simultaneous elemental carbon (EC) and babs measurements performed at 22 sites. We compared different methodologies for retrieving eBC integrating different options for calculating MAC including: locally derived, median value calculated from 22 sites, and site-specific rolling MAC. The eBC concentrations that underwent correction using these methods were identified as LeBC (local MAC), MeBC (median MAC), and ReBC (Rolling MAC) respectively. Pronounced differences (up to more than 50 %) were observed between eBC as directly provided by FAPs (NeBC; Nominal instrumental MAC) and ReBC due to the differences observed between the experimental and nominal MAC values. The median MAC was 7.8 ± 3.4 m2 g-1 from 12 aethalometers at 880 nm, and 10.6 ± 4.7 m2 g-1 from 10 MAAPs at 637 nm. The experimental MAC showed significant site and seasonal dependencies, with heterogeneous patterns between summer and winter in different regions. In addition, long-term trend analysis revealed statistically significant (s.s.) decreasing trends in EC. Interestingly, we showed that the corresponding corrected eBC trends are not independent of the way eBC is calculated due to the variability of MAC. NeBC and EC decreasing trends were consistent at sites with no significant trend in experimental MAC. Conversely, where MAC showed s.s. trend, the NeBC and EC trends were not consistent while ReBC concentration followed the same pattern as EC. These results underscore the importance of accounting for MAC variations when deriving eBC measurements from FAPs and emphasize the necessity of incorporating EC observations to constrain the uncertainty associated with eBC.
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  • 文章类型: Journal Article
    子宫内膜癌(EC)的发病机制涉及乳酸脱氢酶的调节。然而,乳酸脱氢酶-B(LDHB)在EC进展中的作用和机制尚未研究。通过定量实时聚合酶链反应检测LDHB和苹果酸脱氢酶2(MDH2)的mRNA水平。通过蛋白质印迹和免疫组织化学测定检查蛋白质表达。细胞增殖,凋亡,通过5-乙炔基-2'-脱氧尿苷分析和侵袭,transwell,和流式细胞术测定,分别。使用葡萄糖测定试剂盒研究糖酵解,CheKine™微量乳酸检测试剂盒,和ADP/ATP比率测定试剂盒。进行体内肿瘤形成测定以公开LDHB对体内肿瘤生长的影响。信号转导和转录激活因子3(STAT3)之间的关联,LDHB,和MDH2通过JASPAR或GeneMANIA在线数据库进行预测,并通过染色质免疫沉淀法进行鉴定,双荧光素酶报告分析,和免疫共沉淀测定。与正常子宫内膜组织和人子宫内膜基质细胞相比,LDHB在EC组织和细胞中的表达增加。LDHB有可能作为预测EC患者预后的生物标志物。此外,LDHB敲除抑制细胞增殖,入侵,糖酵解并促进RL95-2和Ishikawa细胞的凋亡。LDHB敲除在体内抑制Ishikawa细胞的肿瘤特性。STAT3与LDHB的启动子区结合,LDHB上调后,STAT3沉默诱导的作用得到缓解。LDHB与MDH2表达相互作用并调节MDH2表达。此外,MDH2过表达拯救了LDHB敲低对EC细胞表型的诱导作用。STAT3激活的LDHB通过诱导MDH2产生促进子宫内膜癌细胞恶性化。
    The pathogenesis of endometrial cancer (EC) involves the regulation of lactate dehydrogenases. However, the role and mechanism of lactate dehydrogenase-B (LDHB) in EC progression have not been studied. The mRNA levels of LDHB and malate dehydrogenase 2 (MDH2) were detected by quantitative real-time polymerase chain reaction. Protein expression was checked by western blotting and immunohistochemistry assays. Cell proliferation, apoptosis, and invasion were analyzed by 5-Ethynyl-2\'-deoxyuridine, transwell, and flow cytometry assay, respectively. Glycolysis was investigated using Glucose Assay Kit, CheKine™ Micro Lactate Assay Kit, and ADP/ATP ratio assay kit. An in vivo tumor formation assay was conducted to disclose the effect of LDHB on tumor growth in vivo. The associations among signal transducer and activator of transcription 3 (STAT3), LDHB, and MDH2 were predicted through JASPAR or GeneMANIA online database and identified by chromatin immunoprecipitation assay, dual-luciferase reporter assay, and co-immunoprecipitation assay. LDHB expression was increased in EC tissues and cells in comparison with normal endometrial tissues and human endometrial stromal cells. LDHB had the potential as a biomarker to predict the prognosis of EC patients. In addition, LDHB knockdown inhibited the proliferation, invasion, and glycolysis and promoted apoptosis of RL95-2 and Ishikawa cells. LDHB knockdown inhibited tumor property of Ishikawa cells in vivo. STAT3 bound to the promoter region of LDHB, and STAT3 silencing-induced effects were relieved after LDHB upregulation. LDHB interacted with and regulated MDH2 expression. Moreover, MDH2 overexpression rescued LDHB knockdown-induced effects on EC cell phenotypes. STAT3-activated LDHB promoted endometrial cancer cell malignancy by inducing MDH2 production.
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  • 文章类型: Journal Article
    本研究调查了食管癌(EC)患者放疗(RT)期间心脏体积减小(CVR)的因素。这项回顾性研究包括在国立医院组织四国癌症中心(松山,日本)。心脏描绘基于初始和非脐带增强(保留脊髓方法)计划的计算机断层扫描图像。分析了CVR与其他相关参数的关系。2016年1月至2022年1月共调查了58例EC患者。单变量和多元回归分析显示,RT期间的CVR与下腔静脉(IVC)体积和体重指数(BMI)损失的变化率之间存在统计学上的显着关联。在CVR>10%的多变量分析中,只有IVC体积的变化表现出显著的相关性.相反,在RT期间的CVR显示与心脏剂量-体积参数没有关联,实验室数据,或血压和脉搏率的变化。在CVR>10%的12例中,冠状动脉左前降支区(LADR)的中位运动为1.35cm(范围,0.0-2.7厘米)。总之,RT期间的CVR与IVC体积变化密切相关,表明脱水是主要原因,而不是辐射引起的心脏损伤.由于CVR>10%引起的LADR移动可能导致LADR辐射过量。
    The present study investigated the factors contributing to cardiac volume reduction (CVR) during radiotherapy (RT) in patients with esophageal carcinoma (EC). This retrospective study included patients with EC treated at National Hospital Organization Shikoku Cancer Center (Matsuyama, Japan). Cardiac delineation was based on initial and off-cord boost (spinal cord-sparing approach) planning computed tomography images. The relationship between CVR and other relevant parameters was analyzed. A total of 58 patients with EC were investigated between January 2016 and January 2022. Univariate and multiple regression analyses revealed a statistically significant association between CVR during RT and the change ratio of the inferior vena cava (IVC) volume and body mass index (BMI) loss. In multivariate analysis of CVR of >10%, only the change in IVC volume exhibited a significant association. Conversely, CVR during RT displayed no association with heart dose-volume parameters, laboratory data, or changes in blood pressure and pulse rate. Among the 12 cases with CVR of >10%, the median movement of the left anterior descending coronary artery region (LADR) was 1.35 cm (range, 0.0-2.7 cm). In conclusion, CVR during RT was most strongly associated with changes in IVC volume, suggesting dehydration as the primary cause, rather than radiation-induced heart damage. LADR movement due to a CVR of >10% may lead to LADR radiation overdose.
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  • 文章类型: Journal Article
    以全氟聚醚硅烷(PFPE-硅烷)为超疏水核材料,乙基纤维素(EC)为壳材料,设计合成了一种新型高分子微胶囊。研究了搅拌速率和核壳比对合成微胶囊的影响。使用扫描电子显微镜评估了聚合物微胶囊的物理化学性质,傅里叶变换红外光谱,热重分析,激光粒度分析,和润湿性分析。结果表明,当搅拌速率为650rpm,核壳比为1:1时,可以获得分布良好且分散均匀的微胶囊。结果还表明,制备的聚合物微胶囊为球形颗粒,表面有微孔,它们的平均粒径为165.71μm。EC壳能有效防止PFPE-硅烷在水泥水化过程中的热分解,PFPE-硅烷也表现出优异的疏水性。这种聚合物微胶囊的特殊设计结构表明其具有增强钢筋混凝土结构耐腐蚀性的潜力。
    A novel polymeric microcapsule was designed and synthesized using perfluoropolyether silane (PFPE-silane) as a superhydrophobic core material and ethyl cellulose (EC) as a shell material. The effects of the stirring rate and the core-to-shell ratio on the synthesized microcapsules were investigated. The physicochemical properties of the polymeric microcapsules were evaluated using scanning electron microscopy, fourier transform infrared spectroscopy, thermogravimetric analysis, laser particle size analysis, and wettability analysis. The results showed that when the stirring rate was 650 rpm and the core-to-shell ratio was 1:1, well-distributed and uniformly dispersed microcapsules could be obtained. The results also indicated that the prepared polymeric microcapsules were spherical particles with micropores on the surface, and they had an average particle size of 165.71 μm. The EC shells could effectively prevent the thermal decomposition of PFPE-silane during cement hydration, and the PFPE-silane also exhibited excellent hydrophobicity. The specially designed structure of this polymeric microcapsule suggests its potential for enhancing the corrosion resistance of reinforced concrete structures.
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  • 文章类型: Journal Article
    食管癌(EC)是一种常见的消化道肿瘤,具有高致死性。已证明低氧环境是调节恶性肿瘤进展的重要因素,并且与肿瘤细胞的异常能量代谢密切相关。丝氨酸羟甲基转移酶2(SHMT2)是人类恶性肿瘤中最经常表达的代谢酶之一。本研究旨在探讨缺氧条件下SHMT2在EC中的生物学功能及其调控机制。我们进行RT-qPCR以评估EC组织和细胞(TE-1和EC109)中的SHMT2水平。EC细胞在常氧和缺氧条件下孵育,分别,通过RT-qPCR评估改变的SHMT2表达,westernblot,和免疫荧光。通过CCK-8、EdU、transwell,球体形成,葡萄糖摄取,和乳酸生产测定。通过免疫沉淀和蛋白质印迹测量SHMT2蛋白的乳酸化。此外,通过生物信息学分析SHMT2相互作用蛋白,并通过挽救实验进行验证。SHMT2在EC组织和细胞中显著上调。低氧升高SHMT2蛋白表达,增强EC细胞增殖,迁移,入侵,stemness,和糖酵解。此外,缺氧会触发SHMT2蛋白的乳酸化并增强其稳定性。SHMT2敲低阻碍了EC细胞的恶性表型。进一步的机制研究表明,SHMT2通过与MTHFD1L相互作用参与EC的进展。缺氧诱导SHMT2蛋白的乳化反应并上调其蛋白水平,进而增强MTHFD1L表达并加速EC细胞的恶性进展。
    Esophageal cancer (EC) is a familiar digestive tract tumor with highly lethal. The hypoxic environment has been demonstrated to be a significant factor in modulating malignant tumor progression and is strongly associated with the abnormal energy metabolism of tumor cells. Serine hydroxymethyl transferase 2 (SHMT2) is one of the most frequently expressed metabolic enzymes in human malignancies. The study was designed to investigate the biological functions and regulation mechanisms of SHMT2 in EC under hypoxia. We conducted RT-qPCR to assess SHMT2 levels in EC tissues and cells (TE-1 and EC109). EC cells were incubated under normoxia and hypoxia, respectively, and altered SHMT2 expression was evaluated through RT-qPCR, western blot, and immunofluorescence. The biological functions of SHMT2 on EC cells were monitored by performing CCK-8, EdU, transwell, sphere formation, glucose uptake, and lactate production assays. The SHMT2 protein lactylation was measured by immunoprecipitation and western blot. In addition, SHMT2-interacting proteins were analyzed by bioinformatics and validated by rescue experiments. SHMT2 was notably upregulated in EC tissues and cells. Hypoxia elevated SHMT2 protein expression, augmenting EC cell proliferation, migration, invasion, stemness, and glycolysis. In addition, hypoxia triggered lactylation of the SHMT2 protein and enhanced its stability. SHMT2 knockdown impeded the malignant phenotype of EC cells. Further mechanistic studies disclosed that SHMT2 is involved in EC progression by interacting with MTHFD1L. Hypoxia-induced SHMT2 protein lactylation and upregulated its protein level, which in turn enhanced MTHFD1L expression and accelerated the malignant progression of EC cells.
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  • 文章类型: Journal Article
    精神障碍的高患病率与精神活性物质有关,显着导致发病率,残疾,过早死亡。全球,使用电子烟(EC)并有心理健康诊断的人更有可能经历压力,抑郁症,和药物使用。这项研究旨在衡量EC使用和心理健康障碍的患病率,即,此外,研究沙特阿拉伯普通人群中电子商务使用与心理健康状况之间的关系。
    从2022年11月至2023年5月在沙特阿拉伯进行了横断面分析研究。调查分为三个部分。第一部分集中在人口统计学上,第二部分询问了常规和EC吸烟及其频率。第三部分使用9项抑郁量表(PHQ-9)和7项广义焦虑症量表(GAD-7)的患者健康问卷评估心理健康状况。
    该研究显示,在过去30天内有21.1%的人报告使用了EC。而19.8%的人报告在过去30天内有一天或更多天吸烟。关于心理健康,36.6%的人有轻微的焦虑,而42.4%经历了轻度焦虑。此外,大多数参与者被认为患有轻度抑郁症,其次是轻度抑郁症,占36.7%和31.9%,分别。结果表明,EC使用者的抑郁评分与尼古丁依赖性之间存在正相关。此外,性别和尼古丁依赖之间有很强的关系,男人比女人更喜欢。
    尼古丁的使用与心理健康结果之间存在相关性;使用尼古丁产品的人更容易感到焦虑和抑郁。
    UNASSIGNED: High prevalence of mental disorders is associated with psychoactive substances, significantly contributing to morbidity, disability, and premature mortality. Worldwide, individuals who use electronic-cigarettes (EC) and have a mental health diagnosis are more likely to experience stress, depression, and drug use. This study aims to measure the prevalence of both EC use and mental health disorders namely, anxiety and depression additionally to investigate the association between EC use and mental health status among the general population of Saudi Arabia.
    UNASSIGNED: A cross-sectional analytical study was conducted across Saudi Arabia from November 2022 to May 2023. The survey was divided into three sections. The first section focuses on the demographics, while the second part asked about both conventional and EC smoking and their frequency. The third section assessed mental health status using a Patient Health Questionnaire with a 9-item depression scale (PHQ-9) and a 7-item Generalized Anxiety Disorder scale (GAD-7).
    UNASSIGNED: The study revealed 21.1% reporting EC use in the past thirty days. While 19.8% reported smoking tobacco one or more days within the last thirty days. Regarding mental health, 36.6% of individuals had minimal anxiety, while 42.4% experienced mild anxiety. Moreover, most of the participant were considered to have mild followed by minimal depression accounting for 36.7% and 31.9%, respectively. The results indicated a positive and significant correlation between perceived depression scores and nicotine dependence among EC users. Additionally, there was a strong relationship between gender and nicotine dependence, with men being more inclined than women.
    UNASSIGNED: There is a correlation between nicotine use and mental health outcomes; people who use nicotine products are more likely to experience anxiety and depression.
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  • 文章类型: Journal Article
    虽然纯化的蛋白衍生物(PPD)通常用作结核病(TB)感染的皮肤诊断试剂,它不能有效区分卡介苗(BCG)疫苗接种与结核分枝杆菌(MTB)复合体和非结核分枝杆菌感染。新型皮肤试剂ESAT6-CFP10(EC)具有良好的敏感性和特异性,这可以克服与PPD相关的限制。目前,EC皮试反应主要表现为红斑,而PPD主要引起硬结。我们使用豚鼠模型对EC诱导的红斑和PPD诱导的硬结之间的潜在差异进行了比较研究。EC依赖性红斑的大小与PPD诱导的硬结相似,和以单核细胞浸润为特征的炎症反应,巨噬细胞和淋巴细胞,以及组织损伤,出现在注射部位。淋巴细胞包括CD4+T细胞和CD8+T细胞,其释放IFN-γ作为主要细胞因子。EC红斑和PPD硬结均可导致急性期蛋白水平升高,差异途径相似,因此表明主要的诱导免疫途径是相似的。以上结果表明,EC产生的红斑可产生PPD硬结的主要迟发型超敏反应(DTH),提示红斑也可能具有一定的诊断意义,为其作为检测MTB感染的诊断指标提供可能的理论依据。
    While purified protein derivative (PPD) is commonly used as skin diagnostic reagent for tuberculosis (TB) infection, it cannot distinguish effectively Bacillus Calmette-Guérin (BCG) vaccination from Mycobacterium tuberculosis (MTB) complex and nontuberculous mycobacteria infection. The new skin reagent ESAT6-CFP10 (EC) has favorable sensitivity and specificity, which can overcome limitations associated with PPD. At present, EC skin test reactions are mainly characterized by erythema, while PPD mainly causes induration. We conducted a comparative study on the potential differences between EC-induced erythema and PPD-induced induration using a guinea pig model. The size of EC-dependent erythema was similar to that of PPD-induced induration, and an inflammatory response characterized by the infiltration of monocytes, macrophages and lymphocytes, as well as tissue damage, appeared at the injection site. The lymphocytes included CD4+ T and CD8+ T cells, which released IFN-γ as the main cytokine. Both EC erythema and PPD induration could lead to increased levels of acute-phase proteins, and the differential pathways were similar, thus indicating that the main induced immune pathways were similar. The above results indicated that erythema produced by EC could generate the main delayed-type hypersensitivity (DTH) response characteristic of PPD induration, thereby suggesting that erythema might also have a certain diagnostic significance and provide a possible theoretical basis for its use as a diagnostic indicator for detecting MTB infection.
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