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1.
BMC Public Health ; 24(1): 613, 2024 Feb 26.
Artigo em Inglês | MEDLINE | ID: mdl-38408956

RESUMO

Women face multiple socio-economic, cultural, contextual, and perceived barriers in health service utilization. Moreover, poor autonomy and financial constraints act as crucial factors to their healthcare accessibility. Therefore, the objective of the present study is to study the association between health care utilization barriers and women empowerment, including asset ownership among currently married women in Afghanistan. Data of 28,661 currently married women from Afghanistan demographic health survey (2015) was used to carry out this study. Barriers to access healthcare were computed based on problems related to permission, money, distance, and companionship, whereas women empowerment and asset ownership were computed as potential covariates along with other socio-economic risk factors. Bivariate and logistic analysis was carried out to study the association and odds of explanatory variables. Our results confirm the significant and strong association between the barriers to access healthcare and various explanatory variables. Women having any decision-making autonomy are less likely to face any odds [(AOR = 0.56, p < 0.001), CI: 0.51-0.61] among the currently married women than those who don't have any decision-making authority. Similarly, women who justify their beating for some specific reasons face the greater difficulty of accessing health care [(AOR = 1.76, p < 0.001), CI: 1.61-1.93]. In terms of asset ownership, women having any asset ownership (land or household) are less likely to face any barriers in health services utilization given the lower odds [(AOR = 0.91, p < 0.001), CI: 0.90-0.98]. Accessing maternal health is a crucial policy challenge in Afghanistan. A substantial proportion of women face barriers related to approval, money, distance, and companionship while accessing the health services utilization in Afghanistan. Similarly, women empowerment and asset ownership are significantly associated with health service accessibility. This paper therefore suggests for some policy interventions to strengthen the healthcare needs of women and ensure healthcare accessibility by scaling down these potential barriers like poor autonomy, asset ownership and domestic violence.


Assuntos
Acesso aos Serviços de Saúde , Propriedade , Feminino , Humanos , Afeganistão , Aceitação pelo Paciente de Cuidados de Saúde , Inquéritos Epidemiológicos
2.
J Mater Chem B ; 12(3): 552-576, 2024 Jan 17.
Artigo em Inglês | MEDLINE | ID: mdl-38116755

RESUMO

Cancer poses a formidable challenge, necessitating improved treatment strategies. Metal-based drugs and nanotechnology offer new hope in this battle. Versatile gold complexes and functionalized gold nanoparticles exhibit unique properties like biologically inert behaviour, outstanding light absorption, and heat-conversion abilities. These nanoparticles can be finely tuned for drug delivery, enabling precise and targeted cancer therapy. Their exceptional drug-loading capacity and low toxicity, stemming from excellent stability, biocompatibility, and customizable shapes, make them a promising option for enhancing cancer treatment outcomes and improving diagnostic imaging. Leveraging these attributes, researchers can design more effective and targeted cancer therapeutics. The potential of functionalized gold nanoparticles to advance cancer treatment and diagnostics holds a promising avenue for further exploration and development in the fight against cancer. This review article delves into the finely tuned attributes of functionalized gold nanoparticles, unveiling their potential for application in drug delivery for precise and targeted cancer therapy.


Assuntos
Nanopartículas Metálicas , Neoplasias , Humanos , Ouro/uso terapêutico , Nanopartículas Metálicas/uso terapêutico , Sistemas de Liberação de Medicamentos/métodos , Neoplasias/tratamento farmacológico , Nanotecnologia/métodos
3.
Sci Rep ; 13(1): 10493, 2023 06 28.
Artigo em Inglês | MEDLINE | ID: mdl-37380705

RESUMO

Health outcomes in the state of Jammu and Kashmir have shown improvement in recent decades. However, nutritional achievements, particularly among children under the age of five, have not seen similar progress. Various factors influence the nutritional status of this age group, with the socio-cultural and biological attributes of mothers being considered significant determinants. While some studies have examined these attributes, there is a scarcity of research exploring the causal link between socio-culturally determined factors, such as maternal education, and child nutritional achievements, especially in Indian states located in North India. This paper aims to address this gap by analysing the prevalence of acute malnutrition (stunting) among children under five in Jammu and Kashmir in relation to educational inequality among mothers. The latest round of the National Family Health Survey (NFHS-5) is used to assess the levels of stunting (low height for age) among children, considering the literacy status of mothers and other control variables. Bivariate and multivariable methods are employed to study the association and identify risk factors. Additionally, the Oaxaca decomposition method is used to analyse the educational gap in factors associated with child stunting. The results indicate a higher prevalence of stunting among children of uneducated mothers (29%) compared to those of educated mothers (25%). The findings demonstrate a lower risk of stunting among children whose mothers are literate (OR 0.89). The Oaxaca decomposition analysis reveals a statistically significant difference in stunting between children based on their mother's education. These results highlight the wide disparities in acute malnutrition among children due to variations in maternal education. It is therefore crucial for policymakers to prioritize efforts to reduce educational disparities in order to alleviate the nutritional burden faced by children.


Assuntos
Desnutrição , Mães , Criança , Humanos , Feminino , Escolaridade , Alfabetização , Transtornos do Crescimento/epidemiologia , Desnutrição/epidemiologia
4.
J Public Health (Oxf) ; 45(2): 368-378, 2023 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-35285932

RESUMO

BACKGROUND: Maternal health care financing is key to the smooth functioning of health systems in a country. In India, maternal health care still persists as a major public health issue. Adequate health insurance could transform the utilization of maternal health care services. Therefore, we aim to examine the health insurance policies that cover maternal health and their performance in India. METHODS: The unit-level data of social consumption on health by the National Sample Survey Organizations, conducted in India (2017-18), are used. Bivariate analysis, logistic regression and propensity scoring matching are applied. RESULTS: About 14.1% women are covered by health insurance support at the national level. Uninsured women are less likely to receive full antenatal care (ANC) services and institutional delivery. Socio-economic characteristics play a significant role in utilizing maternal health care benefits through health insurance support. CONCLUSIONS: Our study concludes that the health insurance coverage is the most significant contributor to the better utilization of full ANC and institutional delivery at the national level and hindrances in accessing them. There is a need for proactive and inclusive policy development by the Government of India to incentivize public financing through health insurance, which can shrink the challenges of public health burden and reduce the health risk.


Assuntos
Serviços de Saúde Materna , Saúde Materna , Feminino , Gravidez , Humanos , Masculino , Cuidado Pré-Natal , Seguro Saúde , Índia , Aceitação pelo Paciente de Cuidados de Saúde
5.
PLoS One ; 17(9): e0273659, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36103480

RESUMO

INTRODUCTION: Older adults are always at a greater risk of physical and functional health challenges. These complications result into morbidity, disability and death making them more vulnerable at later ages. Therefore, this paper will examine the functional health status among older adults and its gender perspective, along with associated risk factors. MATERIALS AND METHODS: Using the first round of Longitudinal ageing survey of India (2017-18). Functional disability was computed based on general and instrumental activities of daily living (ADL and IADL) (n = 20910). Functional disability was coined with individual having at least one of the limitations of these activities. Applying bivariate and multivariate analysis the present paper studied the association, gender perspective and risk factors of functional disability among older adults aged 50 and above in India. RESULTS: Our results clearly showed the gender bias in functional disability, with greater proportion of women (52%) at risk for functional disability then men (35%). Factors like multimorbidity, depression and life satisfaction are key risk factors identified by this study that increase the likelihood of disability. CONCLUSION: Functional disability is key to healthy ageing and needs immediate attention given its greater concentration among the elderly, particularly women. The results reflect the substantial burden of functional disability than self-care among older adults in India and therefore indicates some significant policy interventions to reduce the likely impact of functional disability.


Assuntos
Atividades Cotidianas , Pessoas com Deficiência , Idoso , Feminino , Nível de Saúde , Humanos , Índia/epidemiologia , Masculino , Sexismo
6.
BMC Public Health ; 22(1): 746, 2022 04 14.
Artigo em Inglês | MEDLINE | ID: mdl-35422020

RESUMO

BACKGROUND: Health at older ages is a key public health challenge especially among the developing countries. Older adults are at greater risk of vulnerability due to their physical and functional health risks. With rapidly rising ageing population and increasing burden of non-communicable diseases older adults in India are at a greater risk for multimorbidities. Therefore, to understand this multimorbidity transition and its determinants we used a sample of older Indian adults to examine multimorbidity and its associated risk factors among the Indian older-adults aged 45 and above. METHODS: Using the sample of 72,250 older adults, this study employed the multiple regression analysis to study the risk factors of multimorbidity. Multimorbidity was computed based on the assumption of older-adults having one or more than one disease risks. RESULTS: Our results confirm the emerging diseases burden among the older adults in India. One of the significant findings of the study was the contrasting prevalence of multimorbidity among the wealthiest groups (AOR = 1.932; 95% CI = 1.824- 2.032). Similarly women were more likely to have a multimorbidity (AOR = 1.34; 95% CI = 1.282-1.401) as compared to men among the older adults in India. CONCLUSION: Our results confirm an immediate need for proper policy measures and health system strengthening to ensure the better health of older adults in India.


Assuntos
Multimorbidade , Saúde Pública , Idoso , Estudos Transversais , Feminino , Humanos , Índia/epidemiologia , Masculino , Fatores de Risco
7.
Glob Health J ; 6(1): 44-49, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35070474

RESUMO

The unprecedented healthcare demand due to sudden outbreak of coronavirus disease 2019 (COVID-19) pandemic has almost collapsed the health care systems especially in the developing world. Given the disastrous outbreak of COVID-19 second wave in India, the health system of country was virtually at the brink of collapse. Therefore, to identify the factors that resulted into breakdown and the challenges, Indian healthcare system faced during the second wave of COVID-19 pandemic, this paper analysed the health system challenges in India and the way forward in accordance with the six building blocks of world health organization (WHO). Applying integrated review approach, we found that the factors such as poor infrastructure, inadequate financing, lack of transparency and poor healthcare management resulted into the overstretching of healthcare system in India. Although health system in India faced these challenges from the very beginning, but early lessons from first wave should have been capitalized to avert the much deeper crisis in the second wave of the pandemic. To sum-up given the likely future challenges of pandemic, while healthcare should be prioritized with adequate financing, strong capacity-building measures and integration of public and private sectors in India. Likewise fiscal stimulus, risk assessment, data availability and building of human resources chain are other key factors to be strengthened for mitigating the future healthcare crisis in country.

8.
Nutr Cancer ; 74(3): 947-955, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34259111

RESUMO

Deleted in colorectal carcinoma (DCC) A > G (rs714) is the most widely studied SNP of tumor suppressor DCC gene found to be associated with increased risk of various cancers. Therefore, the aim of present case control study was to investigate the role of DCC A > G (rs714) in gallbladder cancer (GBC) in Kashmir and to conduct a meta-analysis of DCC A > G (rs714) polymorphism to demonstrate the more accurate strength of these associations. Genotyping was done by PCR/RFLP and confirmed by sequencing in 100 GBC cases, and 150 controls. We also performed a comprehensive meta-analysis of 2223 subjects (1118 cases and 1105 controls) to evaluate the association between DCC A > G (rs714) polymorphisms and cancer. In present case control study DCC A > G (rs714) genotypes did not modulate the GBC cancer risk. Meta-analysis results showed that DCC A > G (rs714) is associated with increased overall cancer risk. DCC A > G (rs714) polymorphism conferred significant risk for cancer in dominant model but in recessive model P-value was at borderline. DCC A > G (rs714) genotype was associated with increased risk of cancer in Asians and Kashmiri population whereas no such association was observed in Europeans. The evidence in this meta-analysis supports a modest involvement of DCC A > G (rs714) tumoursupressor pathway genes in cancer susceptibility.


Assuntos
Neoplasias da Vesícula Biliar , Predisposição Genética para Doença , Estudos de Casos e Controles , Receptor DCC/genética , Neoplasias da Vesícula Biliar/genética , Neoplasias da Vesícula Biliar/patologia , Genes DCC , Genótipo , Humanos , Polimorfismo de Nucleotídeo Único , Fatores de Risco
9.
PLoS One ; 16(9): e0257080, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34492080

RESUMO

INTRODUCTION: Armed conflicts result in greater vulnerability and socioeconomic inequality of populations besides risking their health and well-being. Conflict intensifies the health needs and risks the life and well-being of individuals at large through displacement. Therefore, our study aims to apprise the interventions to which children under-five living in Jordan are especially at risk for acute respiratory infections, diarrhea, and fever in the conflict circumstances. MATERIALS AND METHODS: Secondary data analysis is used in the present study. We used a weighted sample of around 9650 children from Jordan Population and Family Health Survey (JPFHS), 2017-18. Bivariate analysis including prevalence rates were used to examine the distribution of socio-demographic characteristics of children. The study has also used multinomial logistic regression model, in order to evaluate the variations in the probability of nationality of under-five children living in Jordan. RESULTS: "Syrian nationalist" children have a higher relative risk of ARI (RRR = 1.19, [1.08, 1.32]), and "Other-nationalist" children have two times greater risk of ARI compared to "Jordanian children." The relative risk of diarrhea is lower among "Syrian nationalist" and "Other-nationalist" children compared to "Jordanian children." Children belong "Other-nationalist" are found to be less relative risk of fever (RRR = 0.9, [0.80, 1.01]) than "Jordanian children." CONCLUSIONS: Our study concludes that conflict-driven displacement has an immediate effect on child health through access, availability, and affordability of health care services, resulting in more significant health care risks. However, sufficient investment is required to address such adversities that affect the health care system due to uneven demand as experienced by the Jordanian health care system. Thus, collaborative efforts through global partners can play a significant role in the countries facing the challenges of managing these health care emergencies.


Assuntos
Conflitos Armados , Saúde da Criança , Inquéritos Epidemiológicos , Mães , Adolescente , Adulto , Criança , Pré-Escolar , Diarreia/epidemiologia , Feminino , Febre/epidemiologia , Humanos , Lactente , Recém-Nascido , Jordânia/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Refugiados , Análise de Regressão , Infecções Respiratórias/epidemiologia , Tamanho da Amostra , Fatores Socioeconômicos , Síria , Adulto Jovem
10.
Sci Rep ; 11(1): 10168, 2021 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-33986403

RESUMO

As a joint research collaboration between the National Atmospheric Research Laboratory (NARL), and the University of Kashmir (KU), NARL installed an all-sky airglow CCD imager (with centre wavelengths of 630 nm, 557.7 nm [2 nm band widths] and 840 nm [150 nm wide band with blocking notch at 866 nm to avoid the contamination of molecular oxygen emissions]) in the University campus in Srinagar (75°E, 34°N, geographic), Jammu and Kashmir, India (western Himalayan region). To understand the upper atmospheric dynamics and ionospheric electrodynamics and their associated physical coupling mechanisms, the imager observes airglow emissions of OH molecules (~ 85 km height; 840 nm) and atomic oxygen occurring at the heights of ~ 97 km (557.7 nm) and ~ 250 km (630 nm). Airglow observations in Kashmir commenced in the night of August 11, 2017 and the present work reports on the characteristics of first-time observation of Medium Scale Travelling Ionospheric Disturbances (MSTIDs with horizontal wavelengths of ~ 100-300 km) over Kashmir region during 20:30-22:30 IST (Indian standard time) on August 15, 2017 (India independence day). Initially, the phase front of MSTIDs was aligned along the north-west and south-east direction and moved at ~ 57 m/s towards the south-west direction and finally the westward direction by aligning along the meridian before they disappeared. Along with SAMI-3 ionospheric model simulations, simultaneous multiwavelength airglow observations indicate that secondary gravity waves generated due to dissipation of upward propagating mesospheric gravity waves in the heights of ~ 85-95 km would have contributed to the generation of MSTIDs in the F region ionospheric plasma through electrodynamical coupling between the E and F region (Perkins instability) ionosphere.

11.
RSC Adv ; 11(62): 39349-39361, 2021 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-35492449

RESUMO

Coordination compounds from simple transition metals are robust substitutes for platinum-based complexes due to their remarkable anticancer properties. In a quest to find new metal complexes that could substitute or augment the platinum based chemotherapy we synthesized three transition metal complexes C1-C3 with Cu(ii), Ni(ii), and Co(ii) as the central metal ions, respectively, and evaluated them for their anticancer activity against the human keratinocyte (HaCaT) cell line and human cervical cancer (HeLa) cell lines. These complexes showed different activity profiles with the square planar copper complex C1 being the most active with IC50 values lower than those of the widely used anticancer drug cisplatin. Assessment of the morphological changes by DAPI staining and ROS generation by DCFH-DA assay exposed that the cell death occurred by caspase-3 mediated apoptosis. C1 displayed interesting interactions with Ct-DNA, evidenced by absorption spectroscopy and validated by docking studies. Together, our results suggest that binding of the ligand to the DNA-binding domain of the p53 tumor suppressor (p53DBD) protein and the induction of the apoptotic hallmark protein, caspase-3, upon treatment with the metal complex could be positively attributed to a higher level of ROS and the subsequent DNA damage (oxidation), generated by the complex C1, that could well explain the interesting anticancer activity observed for this complex.

12.
J Mol Struct ; 1225: 129091, 2021 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-32834117

RESUMO

US Food and Drug Administration (FDA) allowed for direct addition of castor oil for human consumption as food and most recently FDA approved castor oil as over-the-counter (OTC) for laxative drug. The present article highlights the green route phosphorylation of castor oil (COL) via condensation polymerization. Further, the incorporation of metal ions Cu (II)) and Zn (II) into the polymer matrix have been carried out at elevated temperature using catalyst p-toluene sulphonic acid (PTSA). The modification of the said material has been confirmed by FT-IR, UV-VIS, and 1H and 31P-NMR spectroscopy. Further, the in vitro antibacterial activities of the metal incorporated-COL has been performed by standard methods against B. cereus (MCC2243) (gram-positive) and E. coli (MCC2412) (gram-negative) bacteria. The results revealed that the incorporation of metal ions into the polymer matrix increases the antibacterial activity largely. This may be governed by the electrostatic interaction between metal ions and microbes, also the generation of free active oxygen hinders the normal activity of bacteria. These results suggest that the synthesized material may act a potential candidate for low cost, environment friendly antibacterial agents and may find their application in clinical fields. Herein we are also proposing mechanism of antibacterial activity.

13.
Bioorg Chem ; 98: 103771, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32224354

RESUMO

Development of new chemotherapeutic agents and strategies are urgently needed to curb and halt the growing menace caused by hard-to-treat microbes. Coordination of metals to bioactive organic ligands is now considered to be an efficient strategy for delivering bioactive compounds inside the microbial cell membranes. Metal complexes have been effectively used to treat many dreadful diseases were other treatment modalities had failed. Use of metal complexes to treat microbial infections is now conceived to be an alternative and efficient strategy. Towards this, some new homoleptic transition metal complexes, obtained by coordination of metal ions to bioactive S-benzyldithiocarbazate Schiff-base ligands were evaluated for their anti-Candida activity and their potential to disrupt the membrane architecture. The complexes displayed remarkable antifungal activity against a wide spectrum of fluconazole susceptible and resistant Candida albicans isolates, with Ni complex (dtc3) being highly active with minimum inhibitory concentration (MIC) values ranging from 1 to 32 µg/mL. Cell viability assay confirmed the fungicidal activity of these metal complexes, especially the complex dtc3. These metal complexes kill Candida albicans by inducing cellular apoptosis and necrosis thereby causing phosphatidylserine externalization as revealed by Annexin V-FITC and propidium iodide staining assays.


Assuntos
Antifúngicos/farmacologia , Apoptose/efeitos dos fármacos , Candida albicans/efeitos dos fármacos , Complexos de Coordenação/farmacologia , Hidrazinas/farmacologia , Iminas/farmacologia , Antifúngicos/síntese química , Antifúngicos/química , Sobrevivência Celular/efeitos dos fármacos , Complexos de Coordenação/síntese química , Complexos de Coordenação/química , Relação Dose-Resposta a Droga , Hidrazinas/química , Iminas/química , Testes de Sensibilidade Microbiana , Estrutura Molecular , Relação Estrutura-Atividade
14.
Nutr Cancer ; 72(6): 984-991, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31755784

RESUMO

Glutathione-S-transferase T1 (GSTT1) and glutathione-S-transferase M1 (GSTM1) genes are associated with increase susceptibility to developing different types of cancers. The aim of present study was to investigate the role of genetic variants of GSTM1 and GSTT1 in gallbladder cancer (GBC) and cholelithiasis in Kashmir valley. Genotyping was done by multiplex polymerase chain reaction in 100 GBC, 100 cholelithiasis, and 150 controls adjusted by age and sex. We also performed a meta-analysis of published studies on GSTM1 and GSTT1 to evaluate the association between the GSTM1 and GSTT1 polymorphisms and GBC. Pooled odds ratio (OR) and 95% confidence interval (CI) were calculated using random- or fixed-effects model. In the present study, no association was observed between GSTM1 null and GSTT1 null genotypes and GBC and cholelithiasis. Meta-analysis results showed that GSTM1 null genotype was associated with GBC risk (P = 0.042). Subgroup analysis by ethnicity showed that GSTM1 null (P = 0.024) and GSTT1 null genotype (P = 0.037) were significantly associated with risk of GBC in Asians. This is the first study to investigate the role of genetic variants of GSTM1 and GSTT1 in GBC in Kashmir valley and cholelithiasis in the world.


Assuntos
Colelitíase , Neoplasias da Vesícula Biliar , Estudos de Casos e Controles , Colelitíase/genética , Neoplasias da Vesícula Biliar/genética , Predisposição Genética para Doença , Genótipo , Glutationa , Glutationa Transferase/genética , Humanos , Polimorfismo Genético , Fatores de Risco
15.
Heliyon ; 5(7): e02055, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31360786

RESUMO

Metal based drugs are important class of chemotherapeutic agents that have the potential to circumvent drug resistance. Increasing drug resistance, treatment failures and limited treatment options necessitates the development of new therapeutic drugs with different mechanisms of action. Towards this direction, we synthesized a series of isatin based mixed ligand complexes of [Cu(dbm)LClH2O] (mlc1), [Co(dbm)LCl2]‒ (mlc2) and [Ni(dbm)LClH2O] (mlc3) and evaluated their antifungal activity alone and in combination with fluconazole (FLC) against seven different Candida albicans isolates. The insight mechanism of antifungal action was revealed by studying apoptosis via terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. The study revealed that all these compounds showed antifungal activity at varying concentrations with mlc3 as the most potent compound with minimum inhibitory concentration ranging from 0.5-8 µg/mL and minimum fungicidal concentration ranging from 4-16 µg/mL. Upon combination with FLC, most of the interactions were either synergistic (54 %) or additive (32 %) with no antagonistic combination against any of the tested isolate. The study on their mechanism of action revealed that these compounds show apoptotic effect on C. albicans at sub-inhibitory concentrations, suggesting that strategies to target this process may augment the current antifungal treatment modalities.

16.
Bioorg Chem ; 87: 773-782, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30974300

RESUMO

Development of new chemotherapeutic agents to treat microbial infections and recurrent cancers is of pivotal importance. Metal based drugs particularly ruthenium complexes have the uniqueness and desired properties that make them suitable candidates for the search of potential chemotherapeutic agents. In this study, two mixed ligand Ru(III) complexes [Ru(Cl)2(SB)(Phen] (RC-1) and [Ru(Cl)2(SB)(Bipy)] (RC-2) were synthesised and characterized by elemental analysis, IR, UV-Vis, 1H, 13C NMR spectroscopic techniques and their molecular structure was confirmed by X-ray crystallography. Antibacterial activity evaluation against two Gram-positive (S. pneumonia and E. faecalis) and four Gram-negative strains (P. aurogenosa, K. pneumoniae, S. enterica, and E. coli) revealed their moderate antibacterial activity with MIC value of ≥250 µg/mL. Anticancer activity evaluation against a non-small lung cancer cell line (H1299) revealed the tremendous anticancer activity of these complexes which was further validated by DNA binding and docking results. DNA binding profile of the complexes studied by UV-Visible and fluorescence spectroscopy showed an intercalative binding mode with CT-DNA and an intrinsic binding constant in the range of 3.481-1.015× 105 M-1. Both the complexes were also found to exert weak toxicity to human erythrocytes by haemolytic assay compared to cisplatin. Potential of these complexes as anticancer agents will be further delineated by in vivo studies.


Assuntos
Antibacterianos/farmacologia , Antineoplásicos/farmacologia , Complexos de Coordenação/farmacologia , Bactérias Gram-Negativas/efeitos dos fármacos , Bactérias Gram-Positivas/efeitos dos fármacos , Rutênio/farmacologia , Triptaminas/farmacologia , Antibacterianos/síntese química , Antibacterianos/química , Antineoplásicos/síntese química , Antineoplásicos/química , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Complexos de Coordenação/síntese química , Complexos de Coordenação/química , Relação Dose-Resposta a Droga , Humanos , Simulação de Acoplamento Molecular , Estrutura Molecular , Rutênio/química , Bases de Schiff/síntese química , Bases de Schiff/química , Bases de Schiff/farmacologia , Relação Estrutura-Atividade , Triptaminas/química , Células Tumorais Cultivadas
17.
Med Chem ; 15(6): 648-658, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30501599

RESUMO

BACKGROUND: The increasing incidence of fungal infections, especially caused by Candida albicans, and their increasing drug resistance has drastically increased in recent years. Therefore, not only new drugs but also alternative treatment strategies are promptly required. METHODS: We previously reported on the synergistic interaction of some azole and non-azole compounds with fluconazole for combination antifungal therapy. In this study, we synthesized some non-azole Schiff-base derivatives and evaluated their antifungal activity profile alone and in combination with the most commonly used antifungal drugs- fluconazole (FLC) and amphotericin B (AmB) against four drug susceptible, three FLC resistant and three AmB resistant clinically isolated Candida albicans strains. To further analyze the mechanism of antifungal action of these compounds, we quantified total sterol contents in FLC-susceptible and resistant C. albicans isolates. RESULTS: A pyrimidine ring-containing derivative SB5 showed the most potent antifungal activity against all the tested strains. After combining these compounds with FLC and AmB, 76% combinations were either synergistic or additive while as the rest of the combinations were indifferent. Interestingly, none of the combinations was antagonistic, either with FLC or AmB. Results interpreted from fractional inhibitory concentration index (FICI) and isobolograms revealed 4-10-fold reduction in MIC values for synergistic combinations. These compounds also inhibit ergosterol biosynthesis in a concentration-dependent manner, supported by the results from docking studies. CONCLUSION: The results of the studies conducted advocate the potential of these compounds as new antifungal drugs. However, further studies are required to understand the other mechanisms and in vivo efficacy and toxicity of these compounds.


Assuntos
Antifúngicos/farmacologia , Candida albicans/efeitos dos fármacos , Bases de Schiff/farmacologia , Anfotericina B/farmacologia , Antifúngicos/síntese química , Antifúngicos/química , Antifúngicos/metabolismo , Candida albicans/enzimologia , Domínio Catalítico , Combinação de Medicamentos , Sinergismo Farmacológico , Fluconazol/farmacologia , Testes de Sensibilidade Microbiana , Simulação de Acoplamento Molecular , Ligação Proteica , Bases de Schiff/síntese química , Bases de Schiff/química , Bases de Schiff/metabolismo , Esterol 14-Desmetilase/química , Esterol 14-Desmetilase/metabolismo
18.
RSC Adv ; 9(27): 15151-15157, 2019 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-35514852

RESUMO

Development of new chemotherapeutic agents to treat multidrug-resistant fungal infections to augment the current treatment options is a must. In this direction, a series of mixed ligand complexes was synthesized from a Schiff base (L) obtained by the condensation of 2-hydroxynapthaldehyde and tryptamine, and 1,10-phenanthroline (1,10-phen) as a secondary ligand. Based on spectral characterization and physical measurements an octahedral geometry was assigned to [Co(phen)LClH2O] (C2), [Ni(phen)LClH2O](C3), and [Zn(phen)LClH2O](C4) complexes while a distorted octahedral geometry was assigned to the [Cu(phen)LClH2O](C1) complex. All the synthesized compounds were tested for antifungal activity against 11 Candida albicans isolates, including fluconazole (FLC) resistant isolates, by determining minimum inhibitory concentrations and studying growth curves. MIC results suggest that all the newly synthesized compounds have potent antifungal activity at varying levels. The rapid action of these compounds on fungal cells suggested a membrane-located target for their action.

19.
Medchemcomm ; 9(3): 409-436, 2018 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-30108933

RESUMO

In recent years, the number of people suffering from cancer and multidrug-resistant infections has sharply increased, leaving humanity without any choice but to search for new treatment options and strategies. Although cancer is considered the leading cause of death worldwide, it also paves the way many microbial infections and thus increases this burden manifold. Development of small molecules as anticancer and anti-microbial agents has great potential and a plethora of drugs are already available to combat these diseases. However, the wide occurrence of multidrug resistance in both cancer and microbial infections necessitates the development of new and potential molecules with desired properties that could circumvent the multidrug resistance problem. A successful strategy in anticancer chemotherapy has been the use of metallo-drugs and this strategy has the potential to be used for treating multidrug-resistant infections more efficiently. As a class of molecules, Schiff bases have been the topic of considerable interest, owing to their versatile metal chelating properties, inherent biological activities and flexibility to modify the structure to fine-tune it for a particular biological application. Schiff base-based metallo-drugs are being researched to develop new anticancer and anti-microbial chemotherapies and because both anticancer and anti-microbial targets are different, heterocyclic Schiff bases can be structurally modified to achieve the desired molecule, targeting a particular disease. In this review, we collect the most recent and relevant literature concerning the synthesis of heterocyclic Schiff base metal complexes as anticancer and anti-microbial agents and discuss the potential and future of this class of metallo-drugs as either anticancer or anti-microbial agents.

20.
Gulf J Oncolog ; 1(24): 10-14, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28797995

RESUMO

Natural products with medicinal value are gradually gaining importance in clinical research due to their well-known property of no side effects as compared to drugs. Tinospora cordifolia (Guduchi) has been used for centuries in Ayurvedic system of medicine for treating various ailments including cancer. In present study, we found that the Tinospora cordifolia extracts (TCE) induced inhibition of proliferation of KB cells was associated with arrest of G0/G1-phase of cell cycle. The effectiveness of TCE in checking the growth of KB cells without altering the growth of normal peripheral blood mononuclear cells (PBMC) indicates that Tinospora cordifolia has differential effect on normal and malignant cells hence, it may have therapeutic potential in cancer.


Assuntos
Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Neoplasias Bucais/patologia , Extratos Vegetais/farmacologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia , Tinospora , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Humanos
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