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1.
Environ Monit Assess ; 195(1): 14, 2022 Oct 22.
Artículo en Inglés | MEDLINE | ID: mdl-36271209

RESUMEN

Being one of the leading industries worldwide, the textile industry has been consuming large quantities of groundwater and discharging huge volumes of dye-contaminated effluents into our aquatic environment. Augmentation of water sources via reuse of treated effluents is therefore highly necessary. In the present study, the decolorization and degradation of synthetic toxic dye from an aqueous solution were investigated through an electro-biological route. Initially, decolorization of synthetic dye solutions (100, 500, and 1000 mg L-1) was carried out by electrooxidation process using mixed metal oxide and titanium as anode and cathode, respectively. The electrooxidation solutions were further treated using bacteria (Pseudomonas aeruginosa) that were isolated from petroleum-transporting pipelines. UV-Vis, TOC, chemical oxygen demand, and NMR analyses revealed that the biodegradation process with electrooxidation enhanced the mineralization of the synthetic dye solutions. An optimum NaCl electrolyte concentration of 3 g L-1 was sufficient to produce reactive species viz., free chlorine and hypochlorite, which are responsible for the Reactive Blue 19 (RB-19) decolorization. Among the three RB-19 concentrations, the highest removal percentage was noticed at 100 mg L-1 (100%) with energy consumption and energy costs equal to 5.44 kWh m-3 and 0.65 USD m-3, respectively.


Asunto(s)
Fenómenos Biológicos , Petróleo , Colorantes/química , Cloro , Titanio/química , Ácido Hipocloroso , Cloruro de Sodio , Monitoreo del Ambiente , Industria Textil , Biodegradación Ambiental , Agua
2.
Dalton Trans ; 50(6): 2268-2283, 2021 Feb 14.
Artículo en Inglés | MEDLINE | ID: mdl-33507192

RESUMEN

Cancer is the most incurable pernicious disease to date after cardiovascular disease with an immeasurable rate of mortality. However, effective cancer medication and therapy are still castles in the sky to researchers. Therefore, in search of an appropriate strategy to annihilate cancer, we have designed a set of Ir(iii)-Cp* dipyridophenazine complexes as luminescent anticancer agents combining the cancer inhibiting potency of the planar dipyridophenazine (dppz) moiety through DNA interaction and mitochondrial dysfunction with the wonderful photoluminescence ability and target specificity of iridium metal. Hence, with the synergy of these dual aspects in the same system, we have aspired to emphasize the theranostic approach of cancer treatment in the present study by preparing effective, aqueous-soluble, mitochondria-targeting, highly cytoselective, luminescent, cancer cell-permeable scaffolds, enabling diagnosis as well as the healing of cancer cells in the body. Here, the presence of the cyclopentadienyl (Cp*) moiety in association with the fluorine group has boosted the lipophilic character of the complexes. Also, the cytotoxicity screening of the prepared Cp*Ir(iii)-dipyridophenazine complexes (IrL1-IrL7) against colorectal adenocarcinoma cells (Caco-2) and human epitheloid cervix carcinoma cells (HeLa) clearly identified them as potential anticancer agents and imaging studies unveiled their superb cellular imaging properties. Among them, the complex [(η5-Cp*)IrCl(11-fluorodipyrido[3,2-a:2',3'-c]phenazine)] (IrL6) achieved the best cytoselectivity. However, the superiority of the anticancer potency of [(η5-Cp*)IrCl(benzo[i]dipyrido[3,2-a:2',3'-c]phenazine)] (IrL3) was also corroborated by its activity against the most aggressive colorectal carcinoma cell line (HT-29), whereas (η5-Cp*)IrCl(11-(trifluoromethyl)dipyrido[3,2-a:2',3'-c]phenazine (IrL5) came into the limelight as the best theranostic agent as it showed remarkable cytoselectivity as well as significant cellular imaging properties, endowing it with the highest quantum yield value among all the complexes.


Asunto(s)
Antineoplásicos , Colorantes Fluorescentes , Iridio , Mitocondrias/efectos de los fármacos , Compuestos Organometálicos , Fenazinas , Antineoplásicos/química , Antineoplásicos/farmacología , Línea Celular , Supervivencia Celular/efectos de los fármacos , ADN/química , Colorantes Fluorescentes/química , Colorantes Fluorescentes/farmacología , Humanos , Iridio/química , Iridio/farmacología , Neoplasias/diagnóstico por imagen , Neoplasias/tratamiento farmacológico , Neoplasias/metabolismo , Compuestos Organometálicos/química , Compuestos Organometálicos/farmacología , Fenazinas/química , Fenazinas/farmacología , Unión Proteica
3.
Dalton Trans ; 50(3): 979-997, 2021 Jan 27.
Artículo en Inglés | MEDLINE | ID: mdl-33355328

RESUMEN

For diagnosing and annihilating cancer in the human body, herein, we have adopted a one pot convenient synthetic protocol to synthesize a library of half sandwich Ru(ii)-p-cymene-N^N complexes under continuous sonication and isolated their regioisomers by preparative thin layer chromatography followed by justification of stability using DFT. The present work has resulted in a library of ruthenium arene complexes and their isolated regioisomers following environmentally benign green processes and their screening of anticancer activity in terms of cytotoxicity and selectivity against cancer cell lines where [(η6-p-cymene)RuCl{2-(5,6-dichloro-1H-benzo[d]imidazole-2-yl)quinolone}] (11j) has been elicited to be significantly more potent as well as selective in Caco-2 and HeLa cell lines than the normal HEK-293 cell line compared to cisplatin and it has even shown marked cytotoxicity against the more aggressive HT-29 colorectal cancer cell line being capable of producing oxidative stress or arresting the cell cycle. Moreover, these types of Ru(ii)-arene complexes exhibited excellent binding efficacy with DNA and the compounds [(η6-p-cymene)RuCl{5-chloro-2-(6-(4-chlorophenyl)pyridin-2-yl)benzo[d]thiazole}]PF6 (8l4), [(η6-p-cymene)Ru-2-(6-(benzofuran-2-yl)pyridin-2-yl)-5-chlorobenzo[d]thiazole (8l9) and [(η6-p-cymene)RuCl{2-(6-nitro-1H-benzo[d]imidazol-2-yl)quinolone}]Cl (11f') and might be applied for cancer theranostic treatment due to their good fluorescence properties and remarkable potency.


Asunto(s)
Complejos de Coordinación/química , Complejos de Coordinación/farmacología , Cimenos/química , ADN/metabolismo , Imagen Molecular/métodos , Rutenio/química , Antineoplásicos/química , Antineoplásicos/metabolismo , Antineoplásicos/farmacología , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Complejos de Coordinación/metabolismo , Ensayos de Selección de Medicamentos Antitumorales , Humanos , Modelos Moleculares , Conformación Molecular , Estereoisomerismo , Relación Estructura-Actividad
4.
Inorg Chem ; 59(23): 17689-17711, 2020 Dec 07.
Artículo en Inglés | MEDLINE | ID: mdl-33210921

RESUMEN

Due to several negative issues, market available drugs have been gradually losing their importance in the treatment of cancer. With a view to discover suitable drugs capable of diagnosing as well as inhibiting the growth of cancer cells, we have aspired to develop a group of theranostic metal complexes which will be (i) target specific, (ii) cytoselective, thus rendering the normal cell unaffected, (iii) water-soluble, (iv) cancer cell permeable, and (v) luminescent, being beneficial for healing the cancer eternally. Therefore, to reach our goal, we have prepared novel Ru(II)- and Ir(III)-based bimetallic and hetero bimetallic scaffolds using click-derived pyridinyltriazolylmethylquinoxaline ligands followed by metal coordination. Most of the compounds have displayed significant cytoselectivity against colorectal adenocarcinoma (Caco-2) and epithiloid cervical carcinoma (HeLa) cells with respect to normal human embryonic kidney cells (HEK-293) compared to cisplatin [cis-diamminedichloroplatinum(II)] along with excellent binding efficacy with DNA as well as serum albumin. Complex [(η6-p-cymene)(η5-Cp*)RuIIIrIIICl2(K2-N,N-L)](PF6)2 [RuIrL] exhibited the best cytoselectivity against all the human cancer cells and was identified as the most significant cancer theranostic agent in terms of potency, selectivity, and fluorescence quantum yield. Investigation of the localization of complex [Ir2L] and [RuIrL] in the more aggressive colorectal adenocarcinoma cell HT-29 indicates that mitochondria are the key cellular target for destroying cancer cells. Mitochondrial dysfunction and G2/M phase cell cycle arrest in HT-29 cell were found to be involved in the apoptotic cell death pathway induced by the test complexes [Ir2L] and [RuIrL]. These results validate the concept that these types of complexes will be reasonably able to exert great potential for tumor diagnosis as well as therapy in the near future.


Asunto(s)
Antineoplásicos/farmacología , Sustancias Luminiscentes/farmacología , Mitocondrias/efectos de los fármacos , Nanomedicina Teranóstica , Antineoplásicos/síntesis química , Antineoplásicos/química , Puntos de Control del Ciclo Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Ensayos de Selección de Medicamentos Antitumorales , Células HEK293 , Humanos , Iridio/química , Iridio/farmacología , Sustancias Luminiscentes/síntesis química , Sustancias Luminiscentes/química , Mitocondrias/metabolismo , Estructura Molecular , Piridinas/química , Piridinas/farmacología , Quinoxalinas/química , Quinoxalinas/farmacología , Rutenio/química , Rutenio/farmacología , Relación Estructura-Actividad
5.
Arch Psychiatr Nurs ; 34(2): 58-66, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-32248935

RESUMEN

This single-arm, pre-post feasibility study evaluated the acceptability and initial efficacy of a mindfulness smartphone-app intervention intended to promote resilience and improve posttraumatic stress disorder (PTSD) symptoms among college student military veterans. The app contained mindfulness exercises and meditations based on the acceptance and commitment therapy. Twenty-three student veterans used the app for four weeks. The results showed high levels of perceived satisfaction and usability of the app. Significant changes in resilience, mindfulness, PTSD, experiential avoidance, and rumination were observed. Future research is needed to test the intervention in a randomized controlled trial.


Asunto(s)
Atención Plena , Aplicaciones Móviles , Teléfono Inteligente , Trastornos por Estrés Postraumático/terapia , Estudiantes , Veteranos , Adulto , Estudios de Factibilidad , Femenino , Humanos , Masculino , Satisfacción Personal , Resiliencia Psicológica , Estudiantes/psicología , Estudiantes/estadística & datos numéricos , Veteranos/psicología , Veteranos/estadística & datos numéricos
6.
Community Ment Health J ; 56(7): 1206-1214, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32274621

RESUMEN

Military veterans' stigmatized views on mental disorders and traditional mental health care considerably reduce veterans' access to mental health services. The present study aimed to refine a previously developed non-stigmatizing smartphone-app intervention based on the principles of acceptance and commitment therapy for college student veterans with posttraumatic stress disorder (PTSD). To this end, we tested the acceptability of the developed prototype using a mixed-method study design. A total of nine student veterans participated in the study by using the app intervention and completing pre-post study measures and a post-intervention qualitative interview. The results showed that the intervention was highly acceptable. The results of the qualitative data analysis highlighted relevant themes related to strategies for improving the content, delivery, and structure of the intervention. The results also showed that, despite a decrease in the participants' adherence as the intervention progressed, there was a consistent improvement in the participants' resilience, PTSD, and rumination. Based on the results, the intervention was revised for prospective feasibility and efficacy testing. Our results highlight the need to use a collaborative approach in the early stage of the development of self-management PTSD interventions.


Asunto(s)
Terapia de Aceptación y Compromiso , Aplicaciones Móviles , Trastornos por Estrés Postraumático , Veteranos , Humanos , Estudios Prospectivos , Trastornos por Estrés Postraumático/terapia , Estudiantes
7.
RSC Adv ; 9(66): 38687-38696, 2019 Nov 25.
Artículo en Inglés | MEDLINE | ID: mdl-35540211

RESUMEN

The arrangement of small sized molecules with a scaffold structure plays an active role in the fields of sensors and health care. An efficient molecular design strategy for four pyrazole-phenanthridine based D-π-A luminophores, denoted as 2a, 2b, 2c and 2d was developed to investigate the effect of acid on the photo-physical properties of these dyes. Photo-physical studies of the synthesized probes showed distinct absorption and emission under various pH conditions. Theoretical calculations using density functional methods were carried out for understanding the mechanistic aspects of the proton induced fluorescence. The experimentally observed photo-physical properties correlated well with theoretical results. Moreover, probes 2 and 2a can be used to monitor the fluorescence changes in E. coli cells under different pH conditions.

8.
Asian Pac Isl Nurs J ; 3(4): 177-189, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-31037266

RESUMEN

Background: Most individuals with mild traumatic brain injury (mTBI) experience post-injury deficits in postural control. Currently available measures of postural control are lab-based or supervised, which may hinder timely symptom assessment for individuals with mTBI, including Asian populations, who do not seek initial screening post-injury. In this proof-of-concept testing study, we introduce a real-time mobile health (mHealth) system to measure postural control during walking. The proposed mHealth system can be used for home-based symptom assessment and management of mTBI. Methods: In our proposed mHealth system, a smartwatch, a smartphone, and a cloud server communicate to measure, collect, and store body balance data in real time. Specifically, we focus on the rotation vector data that have been reported to be the most effective in terms of differentiating balance control during walking across different participants. Results: Constant motion change in four participants (two females and two males; three healthy participants, and one individual with reduced physical mobility) was collected and analyzed. The results of our data analysis show that, compared to healthy participants, the individual was reduced physical mobility had a wider range of motion between right and left, up and down, and forward and backward while walking. We also found that female participants had narrower ranges of right-to-left and up-and-down motions than their male counterparts. Conclusions: Our results highlight the potential of the proposed real-time mHealth system for home-based symptom assessment and management of mTBI, which may benefit Asian and other nonwhite racial minority groups that appear to be more reluctant to access post-acute rehabilitation services.

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