Ac

泪道阻塞性疾病
  • 文章类型: Journal Article
    本研究通过引入负载在活性炭(AC)上的铁掺杂的氧化锰八面体分子筛(Fe-OMS-2)催化剂,有效地解决了锰基催化剂在臭氧分解过程中在潮湿环境中的快速失活。通过优化Fe-OMS-2的掺杂比,Fe-OMS-20.5/AC催化剂在宽范围的相对湿度水平(0至60%)上实现了近100%的臭氧分解效率,即使在800L·g-1·h-1的较高空气流速下,性能也优于独立AC,Fe-OMS-2或OMS-2和AC的简单混合物。Fe-OMS-20.5/AC催化剂具有多孔表面和介孔结构,提供促进Fe-OMS-2活性相在AC表面上均匀分布的显著比表面积。Fe3离子的掺入增强了Mn的价态跃迁之间的电子转移,从而提高催化剂在臭氧分解中的效率。此外,AC组分保护催化位点并增强催化剂的耐湿性。总之,这项研究提出了一种开发高效和具有成本效益的臭氧分解催化剂的新策略,显着促进工业臭氧处理技术和促进环境保护。
    This study effectively addresses the rapid deactivation of manganese-based catalysts in humid environments during ozone decomposition by introducing iron-doped manganese oxide octahedral molecular sieve (Fe-OMS-2) catalysts supported on activated carbon (AC). By optimizing the doping ratio of Fe-OMS-2, the Fe-OMS-20.5/AC catalyst achieves nearly 100% ozone decomposition efficiency across a wide range of relative humidity levels (0 to 60%), even at elevated air flow rates of 800 L·g-1·h-1, outperforming standalone AC, Fe-OMS-2, or a simple mixture of OMS-2 and AC. The Fe-OMS-20.5/AC catalyst features a porous surface and a mesoporous structure, providing a substantial specific surface area that facilitates the uniform distribution of the Fe-OMS-2 active phase on the AC surface. The incorporation of Fe3+ ions enhances electron transfer between valence state transitions of Mn, thereby improving the catalyst\'s efficiency in ozone decomposition. Additionally, the AC component protects catalytic sites and enhances the catalyst\'s humidity resistance. In conclusion, this research presents a novel strategy for developing highly efficient and cost-effective ozone decomposition catalysts that enhance dehumidification, significantly contributing to industrial ozone treatment technologies and advancing environmental protection.
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  • 文章类型: Clinical Trial, Phase II
    背景:涉及神经营养蛋白激酶(NTRK)基因NTRK1,NTRK2和NTRK3与不同融合伴侣的染色体重排发生在非小细胞肺癌(NSCLCs)和其他实体瘤中。新的NTRK重排相关肿瘤仍在被发现。
    方法:赫林,我们描述了一名男性患者,其左上叶肿块通过支气管镜活检。该病例被诊断为携带ETV6::NTRK3基因融合的Ⅳ期肺非典型类癌(AC)。
    结果:他接受了持续4个月的依维莫司一线治疗。化疗失败后,他在1/2期研究中接受了VC004的第三次治疗,并获得了稳定的疾病,但他因不宽容而停止服用。随后,他接受了repotrectinib治疗,并获得了超过10个月的部分缓解。
    结论:据我们所知,我们报道了第一例证明repotrectinib在携带ETV6-NTRK3基因融合的AC患者中具有抗肿瘤活性的病例,表明repotrectinib可能是NTRK基因重排肿瘤的有效治疗选择.
    Chromosomal rearrangements involving the neurotrophin kinase (NTRK) genes NTRK1, NTRK2 and NTRK3 with different fusion partners occur in non-small cell lung cancers (NSCLCs) and other solid tumors. Novel NTRK rearrangement-related tumors are still being discovered.
    Herin, we describe a male patient with a mass in the left upper lobe that was biopsied by bronchoscopy. This case was diagnosed with stage Ⅳ lung atypical carcinoid (AC) harboring the ETV6::NTRK3 gene fusion.
    He received 1st line treatment with everolimus lasting for 4 months. After chemotherapy failure, he received 3rd treatment with VC004 in a phase 1/2 study and achieved stable disease, but he stopped taking it due to intolerance. He subsequently received repotrectinib treatment and achieved a partial response of more than ten months.
    To the best of our knowledge, we reported the first case demonstrating anti-tumor activity of repotrectinib in a patient with AC carring an ETV6-NTRK3 gene fusion, indicating that repotrectinib may be an efficient therapeutic option for tumors with NTRK gene rearrangements.
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  • 文章类型: Journal Article
    听觉稳态响应(ASSR)是由40Hz声刺激序列引起的皮层振荡。虽然ASSR已广泛应用于临床测量,潜在的神经机制仍然知之甚少。在这项研究中,我们调查了听觉丘脑皮质通路-内侧膝状体(MGB)的不同阶段的贡献,丘脑网状核(TRN)和听觉皮层(AC)-对两性C57BL/6小鼠40HzASSR的产生和调节。我们发现,与40Hz声音刺激同步的神经反应在AC颗粒层中的GABA能神经元和MGB的腹侧分裂(MGBv)中最为突出,受光遗传学操作的TRN神经元的调节。行为实验证实,破坏TRN活性对小鼠辨别40Hz声音的能力具有不利影响。这些发现揭示了有助于解释临床ASSR检查结果的丘脑皮质机制。意义声明我们的研究有助于阐明听觉稳态反应(ASSR)的产生和调节的丘脑皮层机制,它通常用于临床和神经科学研究,以评估听觉功能的完整性。结合一系列电生理和光遗传学实验,我们证明,皮质ASSR的产生取决于源自MGB腹侧分裂到AC颗粒层中GABA能中间神经元的lemniscal丘脑皮质投射。此外,ASSR的丘脑皮质过程受到TRN神经元活动的严格调控。行为实验证实,TRN的功能障碍会导致小鼠在听觉辨别任务中的行为表现中断。
    The auditory steady-state response (ASSR) is a cortical oscillation induced by trains of 40 Hz acoustic stimuli. While the ASSR has been widely used in clinic measurement, the underlying neural mechanism remains poorly understood. In this study, we investigated the contribution of different stages of auditory thalamocortical pathway-medial geniculate body (MGB), thalamic reticular nucleus (TRN), and auditory cortex (AC)-to the generation and regulation of 40 Hz ASSR in C57BL/6 mice of both sexes. We found that the neural response synchronizing to 40 Hz sound stimuli was most prominent in the GABAergic neurons in the granular layer of AC and the ventral division of MGB (MGBv), which were regulated by optogenetic manipulation of TRN neurons. Behavioral experiments confirmed that disrupting TRN activity has a detrimental effect on the ability of mice to discriminate 40 Hz sounds. These findings revealed a thalamocortical mechanism helpful to interpret the results of clinical ASSR examinations.Significance Statement Our study contributes to clarifying the thalamocortical mechanisms underlying the generation and regulation of the auditory steady-state response (ASSR), which is commonly used in both clinical and neuroscience research to assess the integrity of auditory function. Combining a series of electrophysiological and optogenetic experiments, we demonstrate that the generation of cortical ASSR is dependent on the lemniscal thalamocortical projections originating from the ventral division of medial geniculate body to the GABAergic interneurons in the granule layer of the auditory cortex. Furthermore, the thalamocortical process for ASSR is strictly regulated by the activity of thalamic reticular nucleus (TRN) neurons. Behavioral experiments confirmed that dysfunction of TRN would cause a disruption of mice\'s behavioral performance in the auditory discrimination task.
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  • 文章类型: Journal Article
    背景:目前有关结肠腺癌(AC)的两种不同组织学亚型的自然史和预后的信息有限:粘液腺癌(MAC)和印戒细胞癌(SRCC)。因此,这项研究的目的是检查结肠MAC和SRCC的临床病理特征,将它们与经典的AC进行比较,使用来自美国的大量病例。方法:诊断为结肠AC的患者,MAC,我们的研究包括2000年至2018年SEER数据库中的SRCC.发病率趋势,患者人口统计学,肿瘤特征,治疗,和生存进行了分析。结果:在我们的研究中,我们分析了310,813例结肠癌患者,包括271,382例经典AC,34,750例MAC,和4,681例SRCC。在学习期间,我们观察到年龄调整后的结肠AC发病率下降,MAC,SRCC。值得注意的是,MAC和SRCC队列在患者特征方面与AC显著不同,肿瘤位置,和治疗模式。与AC患者相比,MAC和SRCC患者的生存结果较差。与生存率较差相关的因素包括年龄较大,男性,低分化肿瘤,高级阶段,以及MAC或SRCC组织学的存在。另一方面,手术干预与生存率改善相关.结论:我们的研究强调了识别与结肠癌不同组织学亚型相关的不同特征和结局的重要性。有必要进行进一步的研究,以深入研究导致这些差异的潜在生物学特征,并制定更量身定制的治疗策略。
    Background: Limited information is currently available on the natural history and prognosis of two distinct histological subtypes of adenocarcinoma (AC) in the colon: mucinous adenocarcinoma (MAC) and signet-ring cell carcinoma (SRCC). Therefore, the aim of this study is to examine the clinicopathological characteristics of colon MAC and SRCC, comparing them to classical AC, using a large cohort of cases from the United States. Methods: Patients diagnosed with colon AC, MAC, or SRCC from the SEER database between 2000 and 2018 were included in our study. Incidence trends, patient demographics, tumor characteristics, treatment, and survival were analyzed. Results: In our study, we analyzed a total of 310,813 patients with colon cancers, including 271,382 cases of classical AC, 34,750 cases of MAC, and 4,681 cases of SRCC. Over the study period, we observed a decline in the age-adjusted incidence rates of colon AC, MAC, and SRCC. Notably, the MAC and SRCC cohorts differed significantly from AC in terms of patient characteristics, tumor locations, and treatment patterns. Patients with MAC and SRCC had poorer survival outcomes compared to those with AC. Factors associated with worse survival included older age, male sex, poorly differentiated tumors, advanced stage, and the presence of MAC or SRCC histology. On the other hand, surgical intervention was associated with improved survival. Conclusion: Our study underscores the significance of recognizing the distinct features and outcomes associated with different histological subtypes of colon cancer. Further research is warranted to delve into the underlying biological traits that contribute to these differences and to develop more tailored treatment strategies.
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  • 文章类型: Journal Article
    太阳能蒸发是一种在没有机械能或电能的情况下淡化海水和废水的有前途的技术。以更高的蒸发效率获得淡水的方法对于解决遥感地区的缺水问题至关重要。在这里,我们报道了一种来自锐钛矿TiO2/活性炭(TiO2/AC)纳米复合材料的高效太阳能蒸发器,使用浸干技术将其涂覆在可洗的棉织物上,以进行太阳能水蒸发。超黑色织物提供增强的太阳能吸收(93.03%),亲水的水传输,在1kWm-2或一个太阳强度下,有效蒸发率为1.65kg/m2h。更重要的是,设计的TiO2/AC太阳能蒸发器的侧向水通道和集中式隔热材料在液体和空气界面处积聚了光热,并且在一个阳光下的表面温度提高了40.98°C。制造的太阳能蒸发器淡化海水(3.5wt%)不影响蒸发率,收集的冷凝水符合世界卫生组织(WHO)规定的饮用水标准。这种方法最终使工程设计小组能够开发技术途径以及低成本的最佳条件,可扩展,高效,和可持续的太阳能驱动的蒸汽发生器,以应对全球水资源短缺。
    Solar-driven evaporation is a promising technology for desalinating seawater and wastewater without mechanical or electrical energy. The approaches to obtaining fresh water with higher evaporation efficiency are essential to address the water-scarcity issue in remote sensing areas. Herein, we report a highly efficient solar evaporator derived from the nanocomposite of anatase TiO2/activated carbon (TiO2/AC), which was coated on washable cotton fabric using the dip-dry technique for solar water evaporation. The ultra-black fabric offers enhanced solar absorption (93.03%), hydrophilic water transport, and an efficient evaporation rate of 1.65 kg/m2h under 1 kW m-2 or one sun solar intensity. More importantly, the sideways water channels and centralized thermal insulation of the designed TiO2/AC solar evaporator accumulated photothermal heat at the liquid and air interface along with an enhanced surface temperature of 40.98 °C under one sun. The fabricated solar evaporator desalinated seawater (3.5 wt%) without affecting the evaporation rates, and the collected condensed water met the standard of drinking water set by the World Health Organization (WHO). This approach eventually enabled the engineering design groups to develop the technology pathways as well as optimum conditions for low-cost, scalable, efficient, and sustainable solar-driven steam generators to cope with global water scarcity.
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  • 文章类型: Case Reports
    神经内分泌癌是一系列罕见且高度异质性的恶性肿瘤。神经内分泌癌主要来自分散在全身的神经内分泌细胞。它们主要发生在肺和胃肠道。喉非典型类癌是一种罕见的神经内分泌癌,在外观上容易误诊为血管瘤。我们主要通过对一例非典型喉类癌的诊断和治疗来为您提供该病。
    Neuroendocrine carcinomas are a spectrum of rare and highly heterogeneous malignant tumors. Neuroendocrine carcinomas mainly arise from neuroendocrine cells scattered throughout the body. They mainly occur in the lung and gastrointestinal tract. Atypical carcinoid of the larynx is a rare type of neuroendocrine carcinoma, which is easily misdiagnosed as hemangioma in appearance. We mainly feature the disease to you through the diagnosis and treatment of a case of atypical carcinoid of the larynx.
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  • 文章类型: Journal Article
    机械性异常性疼痛,以无害刺激引起的痛苦感觉为特征,被认为是由疼痛相关区域的破坏引起的。因此,这种病理性神经适应的鉴定和逆转对临床治疗是有益的。先前的证据表明,眶腹外侧皮质(VLO)中的5-HT6受体与神经性疼痛有关,但人们对它们的功能知之甚少。本研究的目的是揭示5-HT6受体在VLO中的作用以及疼痛调节的潜在机制。这里,通过使用备用神经损伤(SNI)疼痛模型,首先,我们报道,与同侧VLO相比,对侧VLO中5-HT6受体蛋白在异常性疼痛大鼠中降低。第二,将选择性5-HT6受体激动剂EMD-386088和WAY-208466显微注射到对侧VLO中一致且显着抑制异常性疼痛。第三,微量注射选择性拮抗剂SB-258585阻断了激动剂诱导的抗痛觉异常作用,而单独应用于VLO的拮抗剂没有效果。此外,腺苷酸环化酶(AC)抑制剂SQ-22536和蛋白激酶A(PKA)抑制剂H89阻止了EMD-386088对神经性疼痛的抗伤害作用,提示AC/PKA信号传导可能是激动剂抗伤害感受的基础.最后,免疫荧光染色发现5-HT6受体与谷氨酸转运体(EAAC1)共定位,发现谷氨酸受体拮抗剂犬尿烯酸完全阻断抗伤害感受。这些发现表明,5-HT6受体激动剂的抗伤害作用可能是通过与谷氨酸能系统相互作用而发生的。总之,激动剂激活VLO谷氨酸能神经元中存在的5-HT6受体,以促进AC/PKA级联反应,随后可能引发谷氨酸释放,从而抑制异常性疼痛。这些发现表明5-HT6受体激动剂在治疗神经性疼痛中的潜在治疗作用。
    Mechanical allodynia, characterized by a painful sensation induced by innocuous stimuli, is thought to be caused by disruption in pain-related regions. Identification and reversal of this pathologic neuroadaptation are therefore beneficial for clinical treatment. Previous evidence suggests that 5-HT6 receptors in the ventrolateral orbital cortex (VLO) are involved in neuropathic pain, but their function is poorly understood. The aim of the present study is to unveil the role of 5-HT6 receptors in the VLO and the underlying mechanisms in pain modulation. Here, by using the spared nerve injury (SNI) pain model, first, we report that 5-HT6 receptor protein decreased in the contralateral VLO compared with the ipsilateral VLO in rats with allodynia. Second, microinjection of the selective 5-HT6 receptor agonists EMD-386088 and WAY-208466 into the contralateral VLO consistently and significantly depressed allodynia. Third, microinjection of the selective antagonist SB-258585 blocked the agonist-induced anti-allodynic effect, while the antagonist applied alone to the VLO had no effect. Furthermore, the anti-nociceptive effect of EMD-386088 on neuropathic pain was prevented by the adenylate cyclase (AC) inhibitor SQ-22536, and protein kinase A (PKA) inhibitor H89, suggesting that AC/PKA signaling might underlie the antinociception of agonists. Finally, the 5-HT6 receptors were found to be colocalized with a glutamate transporter (EAAC1) by immunofluorescent staining, and the glutamate receptor antagonist kynurenic acid was found to completely block antinociception. These findings indicated that the antinociceptive effect of 5-HT6 receptor agonists might occur via interaction with the glutamatergic system. Altogether, the agonists activated 5-HT6 receptors present in the glutamatergic neurons in the VLO to facilitate the AC/PKA cascade, which subsequently might evoke glutamate release, thus depressing allodynia. These findings suggest a potential therapeutic role of 5-HT6 receptor agonists in treating neuropathic pain.
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  • 文章类型: Journal Article
    Background: Colorectal adenocarcinoma with mucinous component (AWMC) is a special entity of colorectal cancer. The study is aimed at analyzing the clinicopathological characteristics, mutation spectrum, and prognosis of AWMC and comparing it with classical adenocarcinoma (AC) in a Chinese cohort. Methods: One hundred eight AMWC and 204 AC patients were included. Targeted next-generation sequencing (NGS) was performed on formalin-fixed paraffin-embedded (FFPE) tissues. AWMC was further divided into two groups: AWMC with signet ring cell component and AWMC without signet ring cell component. Clinicopathological features, mismatch repair protein (MMR) status, genetic alterations, and survival outcomes were analyzed after tumor location was taken into consideration. Results: AWMC had larger tumor size (p = 0.014) and showed predilection for proximal colon (p < 0.001) compared with AC. Regardless of primary sites, AWMC was associated with less metastasis (p < 0.001) and earlier AJCC stage (p < 0.001). Mismatch repair protein deficiency (dMMR) was more commonly detected in AWMC than in AC for right-sided colon (p < 0.001), but the difference was not significant for left-sided colon (p = 0.081). The five most commonly mutated genes in AWMC were KRAS (45.4%), TP53 (39.8%), APC (22.2%), PIK3CA (22.2%), and SMAD4 (10.2%). AWMC showed a significantly lower mutation rate of TP53 than AC, both in right-sided colon and in left-sided colon (p < 0.001 and p = 0.033, respectively). In left-sided colon, AWMC with signet ring cell component had a significantly smaller size than tumors with signet ring cell component (p = 0.034). No dMMR cases were detected in AWMC with signet ring cell component (n = 7). Moreover, AWMC with signet ring cell component had a significantly lower KRAS mutation rate than AWMC without signet ring cell component, both in right-sided colon and in left-sided colon (p = 0.036 and p = 0.012, respectively). The disease-specific survival (DSS) for AWMC and AC were not statistically different (p = 0.0587). Multivariate analysis showed that AWMC was not an independent predictor of prognosis. Conclusion: Regardless of primary sites, AWMC demonstrates less metastasis, earlier stages, more frequent dMMR, and lower TP53 mutation rate than AC. Our results indicate that different molecular pathogenesis might underlie mucinous morphology in colorectal carcinoma. Mucinous component is not an independent factor of outcome.
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  • 文章类型: Journal Article
    本研究的目的是使用多阶段方法确定宫颈癌(CC)进展的预测因素。本研究从2012年6月至2017年6月的390名健康女性和259名宫颈癌患者获得数据,并使用多阶段再分析策略进行CC的临床检测。本研究共采用七类血清指标,包括糖链抗原125(CA-125),糖链抗原199(CA-199),甲胎蛋白(AFP),癌胚抗原,碱性磷酸酶(ALP),胆固醇和甘油三酯(TG)。CA-125,CA-199,AFP的表达水平,ALP,健康女性和宫颈鳞癌(SCC)患者的胆固醇和TG差异有统计学意义。此外,ALP,与宫颈腺癌(AC)患者相比,健康女性的胆固醇和TG表达水平存在显着差异。基于年龄和病理分期的进一步比较表明,在健康个体中,<40岁年龄组和40-50岁年龄组的ALP水平差异不显著(P>0.05);SCC患者有显著性差异(P<0.05)。分期分析确定了健康女性和SCC患者之间ALP的显着差异(I-IV期),健康女性和I期AC患者之间存在显着差异。本研究的结果表明,与健康女性相比,CC患者中ALP的表达显着增加。因此,ALP可能是CC发展的潜在预测因素。
    The aim of the present study was to identify predictive factors for cervical cancer (CC) progression using a multistage approach. The present study obtained data from 390 healthy women and 259 patients with cervical cancer between June 2012 and June 2017, and used a multiple stage re-analysis strategy for clinical detection of CC. A total of seven types of serum indices were used in the present study, including sugar chain antigen 125 (CA-125), sugar chain antigen 199 (CA-199), α fetoprotein (AFP), carcino- embryonic antigen, alkaline phosphatase (ALP), cholesterol and triglyceride (TG). The expression levels of CA-125, CA-199, AFP, ALP, cholesterol and TG were significantly different between healthy women and patients with cervical squamous cell carcinoma (SCC). Furthermore, ALP, cholesterol and TG expression levels were significantly different in healthy women compared with patients with cervical adenocarcinoma (AC). Further comparisons based on age and pathological staging demonstrated that the variability in the ALP level was not significant between the <40 years old age group and the 40-50 years old age group within healthy individuals (P>0.05); however, was significant in patients with SCC (P<0.05). Staging analysis identified significant differences in ALP between healthy women and patients with SCC (Stage I-IV), and significant differences between healthy women and patients with Stage I AC. The results of the present study indicated that the expression of ALP was significantly increased in patients with CC compared with healthy women. Therefore, ALP may be a potential predictive factor for the development of CC.
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  • 文章类型: Journal Article
    During a large-scale screen of the larval transcriptome library of the Portuguese oyster, Crassostrea angulata, the oyster gene RACK, which encodes a receptor of activated protein kinase C protein was isolated and characterized. The cDNA is 1,148 bp long and has a predicted open reading frame encoding 317 aa. The predicted protein shows high sequence identity to many RACK proteins of different organisms including molluscs, fish, amphibians and mammals, suggesting that it is conserved during evolution. The structural analysis of the Ca-RACK1 genomic sequence implies that the Ca-RACK1 gene has seven exons and six introns, extending approximately 6.5 kb in length. It is expressed ubiquitously in many oyster tissues as detected by RT-PCR analysis. The Ca-RACK1 mRNA expression pattern was markedly increased at larval metamorphosis; and was further increased along with Ca-RACK1 protein synthesis during epinephrine-induced metamorphosis. These results indicate that the Ca-RACK1 plays an important role in tissue differentiation and/or in cell growth during larval metamorphosis in the oyster, C. angulata.
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