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1.
BMC Cancer ; 24(1): 566, 2024 May 06.
Artigo em Inglês | MEDLINE | ID: mdl-38711004

RESUMO

BACKGROUND: Resveratrol has demonstrated its ability to regulate BRCA1 gene expression in breast cancer cells, and previous studies have established the binding of MBD proteins to BRCA1 gene promoter regions. However, the molecular mechanism underlying these interactions remains to be elucidated. The aimed to evaluate the impact of MBD proteins on the regulation of BRCA1, BRCA2, and p16 genes and their consequential effects on breast cancer cells. METHODS: Efficacy of resveratrol was assessed using the MTT assay. Binding interactions were investigated through EMSA, ChIP, & MeIP assay. Expression analyses of MBD genes and proteins were conducted using qRT-PCR and western blotting, respectively. Functional assays, including clonogenic, migratory, and sphere formation assays were used to assess cancer cells' colony-forming, metastatic, and tumor-forming abilities. The cytotoxicity of resveratrol on cancer cells was also tested using an apoptosis assay. RESULTS: The study determined an IC50 of 30µM for resveratrol. MBD proteins were found to bind to the BRCA1 gene promoter. Resveratrol exhibited regulatory effects on MBD gene expression, subsequently impacting BRCA1 gene expression and protein levels. Higher concentrations of resveratrol resulted in reduced colony and sphere formation, decreases migration of cancer cells, and an increases number of apoptotic cells in breast cancer cells. Impact Identification of MBD2-BRCA1 axis indicates their significant role in the induction of apoptosis and reduction of metastasis and proliferation in breast cancer cells. Further therapy can be designed to target these MBD proteins and resveratrol could be used along with other anticancer drugs to target breast cancer. CONCLUSIONS: In conclusion MBD2 protein interact to the BRCA1 gene promoter, and resveratrol modulates MBD2 gene expression, which in turn regulates BRCA1 gene expression, and inhibits cell proliferation, migration, and induces apoptosis in ER+, PR+ & Triple negative breast cancer cells.


Assuntos
Proteína BRCA1 , Proteínas de Ligação a DNA , Regulação Neoplásica da Expressão Gênica , Regiões Promotoras Genéticas , Resveratrol , Neoplasias de Mama Triplo Negativas , Resveratrol/farmacologia , Resveratrol/uso terapêutico , Humanos , Proteína BRCA1/genética , Proteína BRCA1/metabolismo , Feminino , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Neoplasias de Mama Triplo Negativas/genética , Neoplasias de Mama Triplo Negativas/patologia , Neoplasias de Mama Triplo Negativas/metabolismo , Proteínas de Ligação a DNA/metabolismo , Proteínas de Ligação a DNA/genética , Linhagem Celular Tumoral , Apoptose/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Movimento Celular/efeitos dos fármacos , Receptores de Estrogênio/metabolismo , Antineoplásicos Fitogênicos/farmacologia , Antineoplásicos Fitogênicos/uso terapêutico
2.
Semin Cancer Biol ; 86(Pt 3): 682-692, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-34051351

RESUMO

Pancreatic carcinoma is associated with one of the worst clinical outcomes throughout the globe because of its aggressive, metastatic, and drug-resistant nature. During the past decade, several studies have shown that oral, gut, and tumor microbiota play a critical role in the modulation of metabolism and immune responses. Growing pieces of evidence have proved beyond a doubt that the microbiota has a unique ability to influence the tumor microenvironment as well as the metabolism of chemotherapeutic agents or drugs. Given this, microbiota, known as the ecological community of microorganisms, stands to be an avenue of quality research. In this review, we provide detailed and critical information on the role of oral, gut, and pancreatic microbiota disruptions in the development of pancreatic carcinoma. Moreover, we comprehensively discuss the different types of microbiota, their potential role, and mechanism associated with pancreatic carcinoma. The microbiome provides the unique opportunity to enhance the effectiveness of chemotherapeutic agents and immunotherapies for pancreatic cancer by maintaining the right type of microbiota and holds a promising future to enhance the clinical outcomes of patients with pancreatic carcinoma.


Assuntos
Antineoplásicos , Microbioma Gastrointestinal , Microbiota , Neoplasias Pancreáticas , Humanos , Neoplasias Pancreáticas/terapia , Neoplasias Pancreáticas/patologia , Imunoterapia , Microambiente Tumoral , Neoplasias Pancreáticas
3.
Homeopathy ; 112(3): 160-169, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-36442592

RESUMO

BACKGROUND: Arsenic trioxide (As2O3) has been in therapeutic use since the 18th century for various types of cancers including skin and breast; however, it gained popularity following FDA approval for its use against acute promyelocytic leukemia. This present work was designed to evaluate the anti-cancer potential of a homeopathic potency of arsenic trioxide (Arsenicum album 6C) in hormone-dependent breast cancer. METHODS: Breast cancer cells (MCF7) were treated with Arsenicum album (Ars 6C) to evaluate its anti-proliferative and apoptotic potential. We examined the effect of Ars 6C on the cell cycle, wound healing, reactive oxygen species (ROS) generation, and modulation of expression of key genes which are aberrant in cancer. RESULTS: Treating breast cancer cells with Ars 6C halted the cell cycle at the sub-G0 and G2/M phases, which could be attributed to DNA damage induced by the generation of ROS. Apoptotic induction was associated with upregulation of Bax expression, with concurrent downregulation of the Bcl-2 gene. Ars 6C was also seen to reverse epithelial to mesenchymal transition and reduce the migration of breast cancer cells. CONCLUSION: The findings suggest that Ars has significant anti-proliferative and apoptotic potential against breast cancer cells. Further studies are required to elucidate the mechanism by which Ars exerts its effect in the in vivo setting.


Assuntos
Arsenicais , Neoplasias da Mama , Homeopatia , Humanos , Feminino , Trióxido de Arsênio/farmacologia , Transição Epitelial-Mesenquimal , Arsenicais/farmacologia , Arsenicais/uso terapêutico , Óxidos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Espécies Reativas de Oxigênio/farmacologia , Apoptose , Pontos de Checagem do Ciclo Celular , Hormônios/farmacologia , Células MCF-7 , Linhagem Celular Tumoral
4.
Homeopathy ; 111(4): 288-300, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35790192

RESUMO

BACKGROUND: Breast cancer is the most common cancer in women worldwide. Use of homeopathic medicines for the treatment of cancers has increased in the last several years. Arnica montana is an anti-inflammatory homeopathic medicine used in traumatic conditions and because of this property we performed investigations for its potential as a chemotherapeutic agent against breast cancer. METHODS: An ethanolic extract of Arnica montana (mother tincture, MT), prepared according to the Homoeopathic Pharmacopoeia of India, was characterized by gas chromatography-mass spectroscopy (GC-MS), followed by computational (in silico) analysis using molecular docking, to identify specific compounds that can bind and modulate the activity of key proteins involved in breast cancer survival and progression. To validate the in silico findings, in a controlled experiment breast cancer cells (MCF7) were treated in vitro with Arnica montana and the cytotoxic effects assessed by flowcytometry, fluorescence microscopy, scratch assay, clonogenic potential and gene expression analysis. RESULTS: Phytochemical characterization of ethanolic extract of Arn MT by GC-MS allowed identification of several compounds. Caryophyllene oxide and 7-hydroxycadalene were selected for molecular docking studies, based on their potential drug-like properties. These compounds displayed selective binding affinity to some of the recognized target proteins of breast cancer, which included estrogen receptor alpha (ERα), progesterone receptor (PR), epidermal growth factor receptor (EGFR), mTOR (mechanistic target of rapamycin) and E-cadherin. In vitro studies revealed induction of apoptosis in MCF7 cells following treatment with Arn MT. Furthermore, treatment with Arn MT revealed its ability to inhibit migration and colony forming abilities of the cancer cells. CONCLUSION: Considering the apoptotic and anti-migratory effects of Arnica montana in breast cancer cells in vitro, there is a need for this medicine to be further validated in an in vivo model.


Assuntos
Arnica , Neoplasias da Mama , Homeopatia , Humanos , Feminino , Arnica/química , Neoplasias da Mama/tratamento farmacológico , Simulação de Acoplamento Molecular , Extratos Vegetais/farmacologia , Extratos Vegetais/uso terapêutico , Extratos Vegetais/química , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Etanol , Hormônios
5.
Mol Biol Rep ; 48(1): 887-896, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33394226

RESUMO

Pathological calcification is a major cause of cardiovascular morbidities primarily in population with chronic kidney disease (CKD), end stage renal diseases (ERSD) and metabolic disorders. Investigators have accepted the fact that vascular calcification is not a passive process but a highly complex, cell mediated, active process in patients with cardiovascular disease (CVD) resulting from, metabolic insults of bone fragility, diabetes, hypertension, dyslipidemia and atherosclerosis. Over the years, studies have revealed various mechanisms of vascular calcification like induction of bone formation, apoptosis, alteration in Ca-P balance and loss of inhibition. Novel clinical studies targeting cellular mechanisms of calcification provide promising and potential avenues for drug development. The interventions include phosphate binders, sodium thiosulphate, vitamin K, calcimimetics, vitamin D, bisphosphonates, Myoinositol hexaphosphate (IP6), Denosumab and TNAP inhibitors. Concurrently investigators are also working towards reversing or curing pathological calcification. This review focuses on the relationship of vascular calcification to clinical diseases, regulators and factors causing calcification including genetics which have been identified. At present, there is lack of any significant preventive measures for calcifications and hence this review explores further possibilities for drug development and treatment modalities.


Assuntos
Aterosclerose/tratamento farmacológico , Diabetes Mellitus/tratamento farmacológico , Dislipidemias/tratamento farmacológico , Hipertensão/tratamento farmacológico , Insuficiência Renal Crônica/tratamento farmacológico , Calcificação Vascular/tratamento farmacológico , Aterosclerose/metabolismo , Aterosclerose/patologia , Calcimiméticos/uso terapêutico , Cálcio/metabolismo , Denosumab/uso terapêutico , Diabetes Mellitus/metabolismo , Diabetes Mellitus/patologia , Difosfonatos/uso terapêutico , Dislipidemias/metabolismo , Dislipidemias/patologia , Inibidores Enzimáticos/uso terapêutico , Homeostase/efeitos dos fármacos , Hipertensão/metabolismo , Hipertensão/patologia , Fosfatos de Inositol/uso terapêutico , Fósforo/metabolismo , Insuficiência Renal Crônica/metabolismo , Insuficiência Renal Crônica/patologia , Tiossulfatos/uso terapêutico , Calcificação Vascular/metabolismo , Calcificação Vascular/patologia , Vitamina D/uso terapêutico , Vitamina K/uso terapêutico
6.
Homeopathy ; 109(4): 198-206, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32610349

RESUMO

BACKGROUND: Breast cancer is the second leading cause of cancer-related deaths in women. Conventional treatment such as chemotherapy, hormonal therapy and radiotherapy has decreased the mortality rate among cancer patients but has also revealed long-term side effects. Drug resistance and toxicity to normal cells compound the problems associated with the use of modern medicines. Hence, complementary or alternative treatment options are being explored. The current study, using different homeopathic potencies of Hydrastis canadensis, was conducted to distinguish between any effects they might have on hormone-dependent and independent breast cancer. MATERIALS AND METHODS: The cytotoxic effect of homeopathic medicine Hydrastis on hormone-dependent (MCF 7) and hormone-independent (MDA-MB-468) breast cancer cells was assessed using viability and colony-forming assays after 48 or 72 hours of treatment. Flow cytometry-based Annexin V-PI (propidium iodide), caspase 3 and cell cycle analysis was performed following treatment of cells with mother tincture or various potencies of Hydrastis (1C, 2C, 30C, 200C). RESULTS: Different potencies of Hydrastis displayed selective cytotoxic effects against MCF 7 cells, but only marginal effects against MDA-MB-468. The maximum cytotoxicity was established in the case of 1C following 72 hours of treatment. Treatment of breast cancer cells revealed an increase in the G0/G1 cell population, along with an increase in the caspase 3 levels and induction of apoptosis. CONCLUSION: Hydrastis may have a selective cytotoxic effect against hormone-dependent breast cancer MCF 7 cells, leading to cell cycle arrest in the G0/G1 phase, which could be the plausible reason for the induction of apoptosis. The results need to be validated in vivo.


Assuntos
Antineoplásicos/farmacologia , Neoplasias da Mama/tratamento farmacológico , Homeopatia/métodos , Hydrastis , Extratos Vegetais/farmacologia , Apoptose/efeitos dos fármacos , Ciclo Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Citotoxinas/farmacologia , Relação Dose-Resposta a Droga , Feminino , Humanos , Técnicas In Vitro , Células MCF-7
8.
Curr Microbiol ; 74(5): 560-565, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28258294

RESUMO

Cronobacter sakazakii is an emerging pathogen causing meningitis, sepsis and necrotizing enterocolitis in neonates and immune-compromised adults. The present study describes the profiling of different virulence factors associated with C. sakazakii isolates derived from plant-based materials and environmental samples (soil, water, and vacuum dust). All the isolates exhibited ß-hemolysis and chitinase activity, and were able to utilize inositol. Among the nine virulence-associated genes, hly gene coding for hemolysin was detected in all the isolates followed by ompA (outer membrane protein); however, plasmid-borne genes were detected at a level of 60% for both cpa (cronobacter plasminogen activator) and eitA (Ferric ion transporter protein) gene, respectively. Furthermore, the isolate C. sakazakii N81 showed cytotoxicity for Caco-2 cells. The presence of the virulence determinants investigated in this study indicates the pathogenic potential of C. sakazakii with their plausible connection with clinical manifestations.


Assuntos
Cronobacter sakazakii/patogenicidade , Microbiologia Ambiental , Plantas/microbiologia , Fatores de Virulência , Linhagem Celular , Sobrevivência Celular , Células Cultivadas , Cronobacter sakazakii/genética , Cronobacter sakazakii/isolamento & purificação , Infecções por Enterobacteriaceae/microbiologia , Perfilação da Expressão Gênica , Humanos , Característica Quantitativa Herdável , Fatores de Virulência/genética
9.
Homeopathy ; 105(2): 148-59, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27211322

RESUMO

BACKGROUND: Well-documented studies of the potential effects and safety of homeopathic medicines in pregnancy are required. In this study, specific genes were studied which could serve as biomarkers for specification of three lineages to predict the safety of homeopathic remedies using mouse embryonic stem (ES) cells. Thus, the present work was to study the effects of homeopathic remedies taken during pregnancy using ES cells as the model. METHODS: Mouse ES cells were exposed to 30C potency of Nux Vomica and Sepia, which are homeopathic medicines prescribed for the management of pregnancy related symptoms. Cytotoxicity studies were done using a modified Embryonic Stem cell test (EST). The expression levels of key genes and proteins were analyzed using real time polymerase chain reaction and immunocytochemistry, respectively. RESULTS: Homeopathic treatment led to modulations in the expression of certain lineage specific genes but this difference was not significant with respect to solvent control and showed normal differentiation as demonstrated by the expression of α/ß MHC and α-actinin proteins in the differentiated ES cells. CONCLUSIONS: Our study for the first time has shown the feasibility of using ES cells in the developmental toxicity testing of remedies. The results suggest that they are not associated with developmental toxicity.


Assuntos
Células-Tronco Embrionárias/efeitos dos fármacos , Extratos Vegetais/farmacologia , Complicações na Gravidez/tratamento farmacológico , Sepia , Strychnos nux-vomica , Animais , Primers do DNA , Feminino , Homeopatia , Humanos , Camundongos , Modelos Animais , Fitoterapia , Extratos Vegetais/uso terapêutico , Reação em Cadeia da Polimerase , Gravidez , Testes de Toxicidade
10.
Exp Cell Res ; 322(2): 389-401, 2014 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-24560741

RESUMO

The efficient utilization of embryonic stem cells for applications like cell based therapy, transplantation and drug discovery largely depends upon the culturing conditions of these cells. In this report, we have analyzed gene, protein expression and morphological changes of embryonic stem cells when subjected to lowered CO2 levels i.e. hypocapnia. We studied the quantitative expression of pluripotent genes, Oct3/4, Nanog and Sox2 and genes involved in the differentiation to the three lineages, under varying CO2 levels. Enhanced expression of these genes was seen at cultures maintained at 1.5% CO2 as compared to those maintained at 5% CO2. The cells exposed to hypocapnic conditions when subjected to immunocytochemical analysis stained positive for Oct-3/4, Nanog and Sox2 transcription factors. Flow cytometry and western blot further showed that the pluripotent proteins in the 1.5% CO2 maintained cultures have higher levels of expression as compared to the ES cells at 5% CO2. In addition, there was enhanced differentiation particularly towards the mesodermal and endodermal lineages at cultures maintained and differentiated at 1.5% CO2 at all the time periods analyzed i.e. day 10 (5+5d), 12 (5+7d) and day 15 (5+10d). These results, which we feel are the first of their kind, indicate that lowered CO2 levels seem to be preferred for the maintenance of pluripotency and the subsequent differentiation.


Assuntos
Biomarcadores/metabolismo , Células-Tronco Embrionárias/fisiologia , Endoderma/citologia , Regulação da Expressão Gênica no Desenvolvimento , Hipocapnia/fisiopatologia , Mesoderma/citologia , Células-Tronco Pluripotentes/fisiologia , Fosfatase Alcalina/metabolismo , Animais , Western Blotting , Diferenciação Celular , Linhagem da Célula , Células Cultivadas , Células-Tronco Embrionárias/citologia , Endoderma/fisiologia , Citometria de Fluxo , Imunofluorescência , Proteínas de Homeodomínio/genética , Proteínas de Homeodomínio/metabolismo , Mesoderma/fisiologia , Camundongos , Microscopia de Fluorescência , Proteína Homeobox Nanog , Fator 3 de Transcrição de Octâmero/genética , Fator 3 de Transcrição de Octâmero/metabolismo , Células-Tronco Pluripotentes/citologia , RNA Mensageiro/genética , Reação em Cadeia da Polimerase em Tempo Real , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Fatores de Transcrição SOXB1/genética , Fatores de Transcrição SOXB1/metabolismo
11.
Homeopathy ; 104(1): 36-47, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25576270

RESUMO

In the present study, we investigated the anti-cancer effect of various potencies of Ruta graveolens (Ruta) on COLO-205 cell line, as evidenced by cytotoxicity, migration, clonogenecity, morphological and biochemical changes and modification in the levels of genes associated with apoptosis and cell cycle. On treatment of COLO-205 cells maximal effects were seen with mother tincture (MT) and 30C potencies, wherein decrease in cell viability along with reduced clonogenecity and migration capabilities were noted. In addition morphological and biochemical alterations such as nuclear changes (fragmented nuclei with condensed chromatin) and DNA ladder-like pattern (increased amount of fragmented DNA) in COLO-205 cells indicating apoptotic related cell death were seen. The expression of apoptosis and cell-cycle related regulatory genes assessed by reverse transcriptase-PCR revealed an up-regulation of caspase 9, caspase-3, Bax, p21 and p27 expression and down-regulation of Bcl-2 expression in treated cells. The mode of cell death was suggestive of intrinsic apoptotic pathway along with cell cycle arrest at the G2/M of the cell cycle. Our findings indicate that phytochemicals present in Ruta showed potential for natural therapeutic product development for colon carcinoma.


Assuntos
Apoptose/efeitos dos fármacos , Pontos de Checagem do Ciclo Celular/efeitos dos fármacos , Neoplasias do Colo/tratamento farmacológico , Fragmentação do DNA/efeitos dos fármacos , Ruta , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Neoplasias do Colo/patologia , Citometria de Fluxo , Humanos
13.
ScientificWorldJournal ; 2014: 129697, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25401123

RESUMO

Achyranthes aspera (AA) has been used traditionally for the cure of various disorders. However, the action of root extracts of AA as anticancer agent and its cellular mechanism remain unclear. The aim was to screen the antitumor effect of ethanolic (EAA) and aqueous (AAA) root extracts on the growth of colon cancer COLO-205 cells by testing their cytotoxicity, followed by their effect on clonogenicity, migration, and induction of apoptosis. Mechanisms leading to apoptosis and cell cycle arrest were also investigated by expression studies of caspase-9, caspase-3, Bax, Bcl-2, p16, p21, and p27 genes, followed by flow cytometric analysis for cell cycle distribution. Cytotoxicity screening of AA extracts indicated greater cytotoxic activity of AAA extract against COLO-205 cells. A series of events marked by apoptosis revealed loss of cell viability, chromatin condensation, and DNA fragmentation in AAA treated cells to a greater extent. The mRNA expression levels of caspase-9, caspase-3, Bax, p16, p21, and p27 were markedly increased in the AAA treated cells, along with decreased Bcl-2 expression. The cell cycle arrest at S phase was detected by flow cytometric analysis after treatment with AAA. Overall the study signifies the aqueous extracts as a promising therapeutic candidate against cancer.


Assuntos
Achyranthes , Apoptose/efeitos dos fármacos , Neoplasias do Colo/patologia , Mitocôndrias/efeitos dos fármacos , Extratos Vegetais/farmacologia , Raízes de Plantas , Fase S/efeitos dos fármacos , Apoptose/fisiologia , Morte Celular/efeitos dos fármacos , Morte Celular/fisiologia , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Sobrevivência Celular/fisiologia , Neoplasias do Colo/tratamento farmacológico , Relação Dose-Resposta a Droga , Humanos , Mitocôndrias/fisiologia , Extratos Vegetais/isolamento & purificação , Extratos Vegetais/uso terapêutico , Fase S/fisiologia
14.
ScientificWorldJournal ; 2014: 452892, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24672319

RESUMO

The purpose of this current study was to justify the incorporation of complementary and alternate medicine (CAM) in current cancer treatments. The major drawback of anticancer drugs is their nonselective killing, which ultimately leads to attrition of normal cells. Keeping this as the foundation of our study, we made an effort to compare the cytotoxicity associated with a known chemotherapeutic drug 5-Fluorouracil (5-FU), with certain CAM therapies previously reported to have anticancer activity. The parameters chosen for the study were based on antiproliferative and cytotoxic effects on normal, kidney epithelial cells (NRK-52E). The MTT assay, colony formation assay, DNA fragmentation, and differential staining using AO/EB, following treatment with either 5-FU or CAM therapies, were performed. The CAM therapies under study were various extracts of wheatgrass, roots of Achyranthes aspera (AA), mushroom extracts (Pleurotus ostreatus, Macrolepiota procera, and Auricularia polytricha), and a homeopathic drug, Ruta graveolens (Ruta). The results showed that treatment of normal cells with the CAM therapies led to minimum cell damage in comparison to 5-FU. This evidence-based study will lead to greater acceptance of alternative therapies against cancer.


Assuntos
Sobrevivência Celular/efeitos dos fármacos , Terapias Complementares , Apoptose , Linhagem Celular , Humanos , Técnicas In Vitro , Rim/citologia , Rim/efeitos dos fármacos
15.
Life Sci ; 336: 122270, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-37979833

RESUMO

Data collected from large-scale studies has shown that the incidence of prostate cancer globally is on the rise, which could be attributed to an overall increase in lifespan. So, the question is how has modern science with all its new technologies and clinical breakthroughs mitigated or managed this disease? The answer is not a simple one as prostate cancer exhibits various subtypes, each with its unique characteristics or signatures which creates challenges in treatment. To understand the complexity of prostate cancer these signatures must be deciphered. Molecular studies of prostate cancer samples have identified certain genetic and epigenetic alterations, which are instrumental in tumorigenesis. Some of these candidates include the androgen receptor (AR), various oncogenes, tumor suppressor genes, and the tumor microenvironment, which serve as major drivers that lead to cancer progression. These aberrant genes and their products can give an insight into prostate cancer development and progression by acting as potent markers to guide future therapeutic approaches. Thus, understanding the complexity of prostate cancer is crucial for targeting specific markers and tailoring treatments accordingly.


Assuntos
Neoplasias da Próstata , Masculino , Humanos , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia , Receptores Androgênicos/genética , Receptores Androgênicos/metabolismo , Regulação Neoplásica da Expressão Gênica , Orquiectomia , Progressão da Doença , Microambiente Tumoral
16.
J Multimorb Comorb ; 14: 26335565241258851, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38846927

RESUMO

Objectives: This is the first systematic review and meta-analysis of the prevalence of multimorbidity, its risk factors including socioeconomic factors, and the consequences of multimorbidity on health systems and broader society in India. Methods: A systematic review of both published and grey literature from five databases (Medline, Embase, EBSCO, Scopus, and ProQuest) was conducted including original studies documenting prevalence or patient outcomes associated with multimorbidity among adults in India. We excluded studies that did not explicitly mention multimorbidity. Three independent reviewers did primary screening based on titles and abstracts followed by full-text review for potential eligibility. The risk of bias was independently assessed by two reviewers following the Appraisal Tool for Cross-Sectional Studies. We presented both qualitative and quantitative (through meta-analysis) summaries of the evidence. The protocol for this study was prospectively registered with PROSPERO (CRD42021257281). Results: The review identified 5442 articles out of which 35 articles were finally included in this study. Twenty-three studies were based on the primary data while 12 used secondary data. Eleven studies were conducted in hospital/primary care setting while 24 were community-based. The pooled prevalence of multimorbidity based on (n=19) studies included for meta-analysis was 20% (95% CI: 19% to 20%). The most frequent outcomes were increased healthcare utilization, reduced health-related quality of life, physical and mental functioning. Conclusion: We identified a wide variance in the magnitude of multimorbidity across age groups and regions with most of the studies from eastern India. Nation-wide studies, studies on vulnerable populations and interventions are warranted.

17.
Homeopathy ; 102(4): 274-82, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24050774

RESUMO

OBJECTIVE: Homeopathy is controversial, due to the claims made for very high dilutions. Although several theories are proposed to understand the mechanisms of action, none are scientifically verified. This study aimed to investigate the efficacy of the selected homeopathic medicines in specific in vitro cancer models. METHODS: We assessed the cytotoxic activity of selected homeopathic medicines in mother tincture (MT), and ultramolecular dilution (30C, 200C, 1M and 10M) against cell lines deriving from tumors of particular organs, Sarsaparilla (Sars) on ACHN cells (human renal adenocarcinoma), Ruta graveolens (Ruta) on COLO-205 (human colorectal carcinoma), and Phytolacca decandra (Phyto) on MCF-7 (human breast carcinoma). Sars was also tested against Madin-Darby canine kidney (MDCK) cells (a non-malignant cell line). Cytotoxicity was measured using the 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide (MTT) method, anti-proliferative activity by trypan blue exclusion assay, apoptosis determined by dual staining the cells with ethidium bromide (EB) and acridine orange (AO) dyes. RESULTS: MTs and ultra-diluted preparations of the three homeopathic medicines had highly significant effects in the respective cancer cell lines, producing cytotoxicity and a decrease in cell proliferation. The effects were greatest with the MTs, but in all cases and persisted, although to a lesser degree in the ultra-diluted molecular preparations. Sars showed no effect on MDCK cells. In the homeopathic medicine treated cultures, hallmarks of apoptosis were evident including, cell shrinkage, chromatin condensation and DNA fragmentation. CONCLUSION: This study provides preliminary laboratory evidence indicating the ability of homeopathic medicines as anticancer agents. Further studies of the action of these homeopathic remedies are warranted.


Assuntos
Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Neoplasias da Mama/tratamento farmacológico , Neoplasias do Colo/tratamento farmacológico , Homeopatia , Neoplasias Renais/tratamento farmacológico , Preparações de Plantas/farmacologia , Animais , Neoplasias da Mama/patologia , Linhagem Celular Tumoral/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Neoplasias do Colo/patologia , Citotoxinas/farmacologia , Cães , Feminino , Homeopatia/métodos , Humanos , Neoplasias Renais/patologia , Phytolacca dodecandra , Fitoterapia , Ruta , Smilax
18.
Int J Med Mushrooms ; 15(3): 301-14, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23662617

RESUMO

Cancer is one of the most prevalent chronic diseases of the world. Certain edible mushroom species are rich in antioxidants, which perform a vital role in preventing this risk in manifesting itself. Initial screening was followed by qualitative phytochemical analysis; estimation of total phenolic content, DPPH radical scavenging activity, and the ferric-reducing ability of plasma (FRAP) of the ethanolic and the aqueous extracts of 3 edible medicinal mushroom species, namely, Auricularia polytricha, Macrolepiota procera, and Pleurotus ostreatus. Furthermore, based on promising results from studies of antioxidant activities, these extracts were carried forward to study cytotoxic, antiproliferative, and antiapoptotic effects on breast (MCF-7), colon (COLO-205), and kidney (ACHN) cancer cell lines. Among all the extracts, the aqueous extract of P. ostreatus and the ethanolic extract of M. procera showed the highest cytotoxic effect on all 3 cancer cell lines, especially COLO-205. The scientific data obtained so far show that the aqueous extracts of all 3 species of mushrooms have a remarkable irreversible antiproliferative effect on COLO-205 compared with other cancer cell lines. This decrease in cell viability, morphological changes, and apoptotic hallmarks observed upon treatment with the extracts validated the anticancerous property of these mushroom species.


Assuntos
Agaricales/química , Antineoplásicos/farmacologia , Neoplasias do Colo/tratamento farmacológico , Laranja de Acridina , Antioxidantes , Apoptose/efeitos dos fármacos , Compostos de Bifenilo , Linhagem Celular Tumoral , Proliferação de Células , Fracionamento Químico , Etídio , Recuperação de Fluorescência Após Fotodegradação , Humanos , Fenóis/química , Fenóis/farmacologia , Picratos , Coloração e Rotulagem
19.
Biomed Mater ; 18(6)2023 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-37860885

RESUMO

Stem cell-based tissue engineering is an emerging tool for developing functional tissues of choice. To understand pluripotency and hepatic differentiation of mouse embryonic stem cells (mESCs) on a three-dimensional (3D) scaffold, we established an efficient approach for generating hepatocyte-like cells (HLCs) from hepatoblast cells. We developed porous and biodegradable scaffold, which was stimulated with exogenous growth factors and investigated stemness and differentiation capacity of mESCs into HLCs on the scaffoldin-vitro. In animal studies, we had cultured mESCs-derived hepatoblast-like cells on the scaffold and then, transplanted them into the partially hepatectomized C57BL/6 male mice model to evaluate the effect of gelatin scaffold on hepatic regeneration. The 3D culture system allowed maintenance of stemness properties in mESCs. The step-wise induction of mESCs with differentiation factors leads to the formation of HLCs and expressed liver-specific genes, including albumin, hepatocyte nucleic factor 4 alpha, and cytokeratin 18. In addition, cells also expressed Ki67, indicating cells are proliferating. The secretome showed expression of albumin, urea, creatinine, alanine transaminase, and aspartate aminotransferase. However, the volume of the excised liver which aids regeneration has not been studied. Our results indicate that hepatoblast cells on the scaffold implanted in PH mouse indicates that these cells efficiently differentiate into HLCs and cholangiocytes, forming hepatic lobules with central and portal veins, and bile duct-like structures with neovascularization. The gelatin scaffold provides an efficient microenvironment for liver differentiation and regeneration bothin-vitroandin-vivo. These hepatoblasts cells would be a valuable source for 3D liver tissue engineering/transplantation in liver diseases.


Assuntos
Gelatina , Regeneração Hepática , Masculino , Animais , Camundongos , Gelatina/química , Camundongos Endogâmicos C57BL , Fígado/cirurgia , Diferenciação Celular , Hepatócitos , Proliferação de Células , Albuminas
20.
BMC Complement Med Ther ; 23(1): 429, 2023 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-38031066

RESUMO

INTRODUCTION: India has a multifaceted healthcare system and recognizes complementary and alternative systems of medicine (AYUSH) that cater to the healthcare needs of people. Multimorbidity requires frequent visits to physicians and long-term use of medications, due to which people tend to prefer AYUSH systems as they provide holistic patient-centered treatment. Hence, we aimed to estimate the prevalence of multimorbidity and assess its correlates among patients attending AYUSH primary care clinics in Delhi. METHODS: A cross-sectional study was conducted among 943 patients aged ≥ 18 years attending various AYUSH primary care clinics in Delhi from September 2021 to February 2022, employing a stratified random sampling technique. Descriptive statistics such as frequency and proportion were used to report the prevalence of multimorbidity (two or more chronic conditions in an individual out of the 33 conditions listed as per the Multimorbidity Assessment Questionnaire for Primary Care). A multivariable logistic regression assessed the association between various socio-demographic characteristics and multimorbidity, presented as an adjusted odds ratio (AOR) with a 95% confidence interval (CI). RESULTS: The prevalence of diabetes (14.7%) was found to be the highest (out of all included chronic conditions) among the patients attending various AYUSH primary care settings. The overall prevalence of multimorbidity was observed to be around 39.4%. We observed a higher likelihood of having multimorbidity among participants aged ≥ 70 years [AOR: 9.19 (95% CI: 3.75-22.54)], females [AOR: 1.57 (95% CI: 1.04-2.37)], and middle class [AOR: 2.23 (95% CI: 1.45-3.43)]. CONCLUSION: Multimorbidity was evidently prevalent across AYUSH primary care settings, which cannot be overlooked. The results suggest behavioral change communication may be aimed at older individuals, females, and the middle class.


Assuntos
Multimorbidade , Atenção Primária à Saúde , Feminino , Humanos , Prevalência , Estudos Transversais , Doença Crônica
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