Thiocarbamates

硫代氨基甲酸酯
  • 文章类型: Journal Article
    背景:二硫代氨基甲酸酯的有机锡(IV)配合物在药物化学中至关重要,由于其增强靶向递送的独特特性,在靶向癌细胞方面表现出潜力。本研究旨在合成和表征有机锡(IV)N-乙基-N-苄基二硫代氨基甲酸酯复合物(ONBDCs),并评估其对A549细胞的细胞毒性,它们通常被用作人类肺癌研究的模型。
    方法:两种ONBDC衍生物-ONBDC1(二甲基锡(IV)N-乙基-N-苄基二硫代氨基甲酸酯)和ONBDC2(三苯基锡(IV)N-乙基-N-苄基二硫代氨基甲酸酯)-通过氯化锡(IV)与N-乙基苄基胺在二硫化碳存在下反应合成。一系列分析技术,包括元素分析,红外光谱,核磁共振波谱,紫外-可见光谱法,TGA/DTA分析,和X射线晶体学,对这些化合物进行了全面的表征。用MTT法评价ONBDCs对A549细胞的细胞毒作用。
    结果:两种化合物均已合成并通过元素和光谱分析成功表征。MTT实验显示ONBDC2对A549细胞具有显著的细胞毒性,IC50值为0.52μM。此外,与市售化疗剂顺铂相比,ONBDC2对A549细胞系显示出明显更高的细胞毒性活性(IC50:32μM)。
    结论:因此,研究表明,ONBDC2可能具有重要的抗癌特性,作为创造改良和专业化癌症治疗的顶级竞争者,应进一步加以探讨.
    BACKGROUND: Organotin(IV) complexes of dithiocarbamate are vital in medicinal chemistry, exhibiting potential in targeting cancer cells due to their unique properties that enhance targeted delivery. This study aimed to synthesize and characterize organotin(IV) N-ethyl-N-benzyldithiocarbamate complexes (ONBDCs) and evaluate their cytotoxicity against A549 cells, which are commonly used as a model for human lung cancer research.
    METHODS: The two ONBDC derivatives - ONBDC 1 (dimethyltin(IV) N-ethyl-N-benzyldithiocarbamate) and ONBDC 2 (triphenyltin(IV) N-ethyl-N-benzyldithiocarbamate) - were synthesized via the reaction of tin(IV) chloride with N-ethylbenzylamine in the presence of carbon disulfide. A range of analytical techniques, including elemental analysis, IR spectroscopy, NMR spectroscopy, UV-Vis spectrometry, TGA/DTA analysis, and X-ray crystallography, was conducted to characterize these compounds comprehensively. The cytotoxic effects of ONBDCs against A549 cells were evaluated using MTT assay.
    RESULTS: Both compounds were synthesized and characterized successfully via elemental and spectroscopies analysis. MTT assay revealed that ONBDC 2 demonstrated remarkable cytotoxicity towards A549 cells, with an IC50 value of 0.52 μM. Additionally, ONBDC 2 displayed significantly higher cytotoxic activity against the A549 cell line when compared to the commercially available chemotherapeutic agent cisplatin (IC50: 32 μM).
    CONCLUSIONS: Thus, it was shown that ONBDC 2 could have important anticancer properties and should be further explored as a top contender for creating improved and specialized cancer treatments.
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  • 文章类型: Journal Article
    由于广泛的组织病理学特征和罕见的疾病,低分化甲状腺癌(PDTC)和间变性甲状腺癌(ATC)之间的临床病理边界尚不清楚。除此之外,死亡率最高,治疗方式不规范,PDTC/ATC人群没有进行全面的描述,并与组织学特征的程度进行比较,治疗反应,预后因素,和死亡归因分析。
    从监测中确定了2000年至2018年的4,947名PDTC/ATC患者。流行病学,和结束结果(SEER)数据库。应用Kaplan-Meier存活曲线估计和Cox比例风险回归。
    总的来说,PDTC的5年和10年DSS分别为71.9%和68.0%,分别,而5年和10年OS分别为59.3%和51.2%,分别。ATC患者的中位生存时间为3个月,1年OS为26.9%,1年DSS为31.2%。在后续期间,68.1%的PDTC/ATC队列死亡,其中51.6%归因于甲状腺恶性肿瘤,16.5%归因于非甲状腺原因。前三个常见的非甲状腺死亡原因是其他癌症,下呼吸系统疾病,还有心脏病.甲状腺乳头状癌(PTC)的组织学特征是PDTC患者的主要病理类型(51.7%),而76.7%的ATC患者病理特征为无法识别。在ATC病例中发现的肉瘤组织学特征遭受最高的总死亡率(与PTC,HR=2.61,95%CI1.68-4.06,P<0.001)。年龄较大的无法识别的组织学特征,更先进的AJCCN1b,AJCCM1和SEER阶段,肿瘤大小大于5厘米,和更多的侵袭性肿瘤扩展是独立的不良预后预测因子。
    PDTC/ATC队列的人群分析为更好地理解PDTC和ATC病例之间的差异以及临床实践和进一步研究的指导提供了可靠的支持。
    UNASSIGNED: The clinic-pathological boundary between poorly differentiated thyroid cancer (PDTC) and anaplastic thyroid cancer (ATC) is unclear due to a wide spectrum of histopathological features and the rarity of the disease. In addition to that, with the highest mortality rate and non-standard treatment modality, the PDTC/ATC population has not been subjected to comprehensive description and comparison with the extent of histological characteristics, therapeutic response, prognostic factors, and death attribution analysis.
    UNASSIGNED: A total of 4,947 PDTC/ATC patients from 2000 to 2018 were identified from the Surveillance, Epidemiology, and End Results (SEER) database. Kaplan-Meier survival curve estimation and Cox proportional hazard regression were applied.
    UNASSIGNED: Overall, the 5- and 10-year DSS for PDTC were 71.9% and 68.0%, respectively, whereas the 5- and 10-year OS are 59.3% and 51.2%, respectively. The median survival time for ATC patients was 3 months with 1-year OS being 26.9% and 1-year DSS being 31.2%. During the follow-up period, 68.1% of the PDTC/ATC cohort were dead, 51.6% of which were attributed to thyroid malignancies and 16.5% to non-thyroid causes. The top three common non-thyroid causes of death were miscellaneous cancers, lower respiratory system disease, and heart disease. The histological feature of papillary thyroid cancer (PTC) was the leading pathological category for PDTC patients (51.7%), whereas 76.7% of ATC patients\' pathological feature was characterized as unidentifiable. Sarcoma histological characteristics found in ATC cases suffer the highest overall mortality (vs. PTC, HR = 2.61, 95% CI 1.68-4.06, P < 0.001). Older age unidentifiable histology feature, more advanced AJCC N1b, AJCC M1, and SEER stage, tumor size larger than 5 cm, and more invasive tumor extension were independent bad outcome predictors.
    UNASSIGNED: The populational analysis of the PDTC/ATC cohort has provided reliable support for better understanding of the difference between PDTC and ATC cases and the guidance of clinical practice and further studies.
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  • 文章类型: Journal Article
    我们分析了基因检测的结果,以研究日本晚期甲状腺癌的突变频率。纳入了不可切除或转移性甲状腺癌的患者(n=96)进行回顾性图表回顾。基因组检测结果,在2020年5月至2023年4月期间进行了分析。患者的中位年龄为73.5岁(范围,17-88);59是女性,39人是男人。总的来说,17例患者患有甲状腺未分化癌(ATC),68例甲状腺乳头状癌(PTC),7人患有滤泡性甲状腺癌,6例甲状腺低分化癌(PDTC)。81例分化型甲状腺癌(DTC)和PDTC,88.9%为耐放射性碘,所有病例中有32.7%以前曾接受过多种激酶抑制剂治疗.在空管案件中,52.9%有BRAF突变,5.9%有RET融合。在PTC案例中,83.1%有BRAF突变,9.2%有RET融合,1.5%有NTRK融合。ATC和PTC各1例肿瘤突变负荷≥10。ATC病例TP53改变的患病率明显高于其他病例(82.3%vs.11.8%),而TERT启动子突变的频率在ATC病例中为88.2%,在其他病例中为64.7%,虽然没有显著差异。总之,58.8%的ATC,PTC的93.8%,42.9%的PDTC有与治疗药物相关的遗传改变。需要进行主动基因组测试以增加治疗选择。
    We analyzed the outcomes of genetic testing to study the frequency of mutations in advanced thyroid cancer in Japan. Patients (n = 96) with unresectable or metastatic thyroid carcinoma were included for retrospective chart review. Results of gene panel testing, which was performed between May 2020 and April 2023, were analyzed. The median age of the patients was 73.5 years (range, 17-88); 59 were women, and 39 were men. Overall, 17 patients had anaplastic thyroid carcinoma (ATC), 68 had papillary thyroid carcinoma (PTC), 7 had follicular thyroid carcinoma, and 6 had poorly differentiated thyroid carcinoma (PDTC). Of the 81 patients with differentiated thyroid carcinoma (DTC) and PDTC, 88.9% were radioactive iodine-refractory, and 32.7% of all cases had previously been treated with multiple kinase inhibitors. Of ATC cases, 52.9% had BRAF mutations, and 5.9% had RET fusion. Of PTC cases, 83.1% had BRAF mutations, 9.2% had RET fusion, and 1.5% had NTRK fusion. One case each of ATC and PTC had a tumor mutation burden of ≥10. ATC cases had a significantly higher prevalence of TP53 alterations than the other cases (82.3% vs. 11.8%), whereas the frequencies of TERT promoter mutations were 88.2% in ATC cases and 64.7% in the other cases, albeit without a significant difference. In conclusion, 58.8% of ATC, 93.8% of PTC, and 42.9% of PDTC had genetic alterations linked to therapeutic agents. Active gene panel testing is required to increase treatment options.
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  • 文章类型: Journal Article
    BACKGROUND: Problems with balance are common after a stroke, and dancing can be a beneficial adjunctive approach to rehabilitation. Dancing can be seen as a strategy to increase motivation, as it may be able to improve motor patterns of stroke patients. In this sense, Bolero is a Cuban rhythm that includes slight movements and provides stimuli to engage one physically and make one learn new motor patterns. This study aimed to investigate the contribution of Bolero basic steps and stretching to the balance of stroke patients.
    METHODS: The study included a sample of 11 individuals diagnosed with stroke, who were assessed before and after training Bolero steps and stretching. Participants were assessed using the Berg Balance Scale (BBS), Timed Up and Go (TUG), and Functional Reaching Test (FRT). The sessions took place twice a week for 6 weeks with an average duration of 50 min per session. Stretching exercises were sustained for 30 s each. After stretching, Bolero steps were taught with gradually increasing difficulty levels. Stretches were repeated at the end of the session.
    RESULTS: Paired sample t-tests showed significant difference in all instruments pre-versus post-therapy (p < 0,05).
    CONCLUSIONS: Based on the results, the performance of Bolero steps was feasible for these individuals, the duration and intensity of the classes were well tolerated and there was a significant improvement in balance. These findings corroborate studies carried out with other types of dance, such as Tango, Jazz and Merengue, with post-stroke patients.
    CONCLUSIONS: Training the basic steps of Bolero and stretching significantly improved balance in this sample of stroke patients.
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  • 文章类型: Journal Article
    Gastropod mollusks have achieved an eminent importance as biological indicators of environmental quality. In the present study, we applied a multibiomarker approach to evaluate its applicability for the pond snail Lymnaea stagnalis, exposed to common industrial and agricultural pollutants at environmentally relevant concentrations. The snails were exposed to copper (Cu2+, 10 µg L-1), zinc (Zn2+, 130 µg L-1), cadmium (Cd2+, 15 µg L-1), or the thiocarbamate fungicide \"Tattoo\" (91 µg L-1) during 14 days. Metal treatment and exposure to \"Tattoo\" caused variable patterns of increase or decrease of metal levels in the digestive gland, with a clear accumulation of only Cd and Zn after respective metal exposure. Treatment with Cu and \"Tattoo\" caused an increase of cytochrome P450-related EROD activity. Glutathione S-transferase was inhibited by exposure to Cu, Zn, and \"Tattoo.\" Treatment with the \"Tattoo\" led to an inhibition of cholinesterase activity, whereas Cu and Cd increased its activity. Caspase-3 activity was enhanced by up to 3.3 times in all treatments. A nearly uniform inhibitory effect for oxidative stress response parameters was observed in all kinds of exposure, revealing an inhibition of superoxide dismutase (Mn-SOD) activity, a depression of glutathione (GSH and GSSG) and of protein carbonyl levels. Pollutant-specific effects were observed for the catalase activity, superoxide anion production, and lipid peroxidation levels. Due to the high response sensitivity of Lymnaea stagnalis to chemical impacts, we suggest our study as a contribution for biomarker studies with this species under field conditions.
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  • 文章类型: Journal Article
    The application of gold as drug candidate dated back to 2500 BC and its relevance in medicine became more appealing following 1985 FDA approval of ingested Auranofin for the treatment of rheumatoid arthritis. In this study, we have provided a density functional theory (DFT) study of some gold(III)-dithiocarbamate complexes with characteristic anticancer potentials. DFT calculation of the reactivity and selectivity properties of these complexes with an enzyme template of thioredoxin reductase (TrxR) was carried out. The investigation proceeds with theoretical characterization of the selected compounds through spectroscopic analyses. IR and UV-vis analyses were carried out and the calculated values are comparable to experimental results. NMR assignment was determined for the gold compounds and the estimated theoretical chemical shift values agree with available experimental data from literature. The obtained DFT-based chemical parameters proved to be significant in evaluating the selectivity, reactivity and stability of the gold(III) complexes as potential anticancer moieties, specifically against TrxR. Calculated binding free energy gave similar order with the available in vitro inhibition profile of these gold(III)-dithiocarbamate complexes against TrxR. The outcome of this DFT study could serve as a useful guide towards future design of new and potent anticancer drug candidate. The investigated chemical reactivity properties could be considered and applied to a wide range of bioactive compounds and enzyme-inhibitor systems.
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  • 文章类型: Journal Article
    Cartap hydrochloride is a mildly perilous insecticide known as \"Padan\" which is used largely in agricultural farms to control weevil and caterpillars. The over use of cartap causes harmful effects on human health. Since the blood may acts as a target and carrier for insecticides, the effect of these compounds on blood in mammalian toxicology is very important. Hemoglobin is a tetramer protein that play critical role in oxygen transport. The aim of this study was to analyze and compare the function and structural changes of hemoglobin in the presence of different concentrations of cartap by employing different spectroscopic techniques. The obtained results show that cartap has a high hemolytic effect which is increased with cartap concentration and reduces the thermal midpoint of hemoglobin. Fluorescence measurements reveal heme degradation at different concentrations of cartap. In consequence of theoretical and experimental results, cartap has an undesirable effect on hemoglobin structure and function.
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  • 文章类型: Journal Article
    New dithiocarbamate chalcone-based derivatives were synthesized, their structures were elucidated using different spectroscopic techniques. They were subjected to antimicrobial screening against selected Gram negative bacteria focusing on microbial resistance. Bacterial resistance was targeted via phosphoethanolamine transferase enzyme. Most of the synthesized compounds showed equal or higher activity to colistin standard. Compound 24 proved to be the most active candidate with MIC of 8 µg/ml against both Ps12 and K4 and MBC of 32 µg/ml against Ps12 and 16 µg/ml against K4 Molecular docking study showed that 20, 22, 24 and 25 had good binding affinity with active site residues via Thr280. DNA macromolecule was further targeted. Compounds 28 and 34 were recorded to have better DNA binding than doxurubucin with IC50 of 27.48 and 30.97 µg/ml respectively, suggesting that it could have a role in their higher antibacterial effect. Their docking into DNA has shown a clear intercalation matching with antibacterial data. Pharmacokinetics parameters of active compounds showed that they have better absorption through GIT.
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  • 文章类型: Journal Article
    OBJECTIVE: The roles of toll-like receptor 4 (TLR4) and nuclear factor-kappa B (NF-κB) in peri-implantitis are unclear. Here, we used a canine model of peri-implantitis to explore the effects of inhibiting NF-κB with pyrrolidine dithiocarbamate (PDTC) on the inflammatory response in ligature-induced peri-implantitis.
    METHODS: After successfully establishing the peri-implantitis model, beagles were randomly assigned to normal, model or PDTC groups. ELISA tests were used to determine the levels of interleukin (IL)-1, IL-6, IL-8 and tumor necrosis factor alpha (TNF-α). Immunohistochemistry was employed to assess the expression of NF-κB p65. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was performed to determine the mRNA levels of TLR4 and NF-κB p65, and western blot analysis was used to measure the protein levels of TLR4 in periodontal tissues from each group. Periodontal ligament fibroblasts (PDLFs) were cultured and subsequently classified into PDLF normal, PDLF model, PDLF LPS, PDLF PDTC, and PDLF LPS + PDTC groups. An immunofluorescence assay was used to measure the expression level of NF-κB p65. The CCK-8 assay and flow cytometry were performed to evaluate cell proliferation and apoptosis.
    RESULTS: The in vitro results indicated that NF-κB p65 and TLR4 were upregulated in canine periodontal tissues, and PDTC could suppress the expression levels of NF-κB p65 and TLR4. Inflammation could increase TLR4 protein expression in canine periodontal tissue, and PDTC could inhibit the inflammation-induced increase in TLR4 protein expression. These results revealed that PDTC could reverse the LPS-induced increases in the levels of IL-1, IL-6, IL-8 and TNF-α. In vivo, the results demonstrated that PDTC inhibited the LPS-induced NF-κB p65 upregulation, and PDTC could reverse the inhibitory effect of the PDLF model + LPS on the proliferation of periodontal fibroblasts. The results also showed that in the PDLF model, LPS promoted PDLF apoptosis by inducing implant periodontitis in canines, but PDTC inhibited the PDLF apoptosis and relieved implant periodontitis in canines.
    CONCLUSIONS: Based on our results, we concluded that PDTC can inhibit the expression of NF-κB and alleviate the inflammatory response induced by LPS, thereby preventing periodontal inflammation and reducing the development of peri-implantitis.
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  • 文章类型: Journal Article
    The intermediate metabolites and redox status imbalance were supported as the two major points for N,N-dimethylformamide (DMF)-induced hepatotoxicity. However, the potential mechanism has not yet been concerned. By applying two inhibitors, this study tried to seek the major role in DMF-induced toxicity on HL7702 cell. We observed that DMF induced cell apoptosis through mitochondrial-dependent and p53 pathway. Inhibition reactive oxygen species by catalase remarkably attenuated the mitochondrial transmembrane potential (MMP), apoptotic proteins, and apoptosis. On the contrary, it reduced the biodegradation rate of DMF by coincubation with CYP2E1 antagonist (DDC) partially reduced late apoptosis. However, the change in MMP, the ratio of Bax to Bcl-xl, and cleaved-caspase 9 was not attenuated by DDC. The pathway in DDC coincubation groups was related to the p53 rather than the mitochondrial pathway. Restoring the redox balance during biodegradation is much more effective than attenuating the metabolite rate of DMF. This study may provide a suitable prevention method to occupational workers.
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