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1.
Trop Doct ; 54(3): 248-250, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38497138

RESUMO

Postoperative monitoring of skin flaps is subjective and cannot detect early circulatory problems in the flap. Early detection and rapid remedial re-exploration are important for flap salvage. We evaluated flap glucose measurement to monitor the flaps for early detection of circulatory problems. In total, 30 patients underwent cutaneous flap reconstruction. This is an easy, economic, objective, and reliable method for flap monitoring and can detect early venous congestion requiring remedial measures.


Assuntos
Glicemia , Retalhos Cirúrgicos , Humanos , Glicemia/análise , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Monitorização Fisiológica/métodos , Procedimentos de Cirurgia Plástica/métodos , Diagnóstico Precoce , Idoso , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/sangue , Adulto Jovem , Adolescente
2.
J Clin Oncol ; 42(1): 59-69, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-37871266

RESUMO

PURPOSE: Geriatric assessment (GA) is a guideline-recommended approach to optimize cancer management in older adults. We conducted a cost-utility analysis alongside the 5C randomized controlled trial to compare GA and management (GAM) plus usual care (UC) against UC alone in older adults with cancer. METHODS: The economic evaluation, conducted from societal and health care payer perspectives, used a 12-month time horizon. The Canadian 5C study randomly assigned patients to receive GAM or UC. Quality-adjusted life-years (QALYs) were measured using the EuroQol five dimension-5L questionnaire and health care utilization using cost diaries and chart reviews. We evaluated the incremental net monetary benefit (INMB) for the full sample and preselected subgroups. RESULTS: A total of 350 patients were included, of whom 173 received GAM and 177 UC. At 12 months, the average QALYs per patient were 0.728 and 0.751 for GAM and UC, respectively (ΔQALY, -0.023 [95% CI, -0.076 to 0.028]). Considering a societal perspective, the total average costs (in 2021 Canadian dollars) per patient were $46,739 and $45,177 for GAM and UC, respectively (ΔCost, $1,563 [95% CI, -$6,583 to $10,403]). At a cost-effectiveness threshold of $50,000/QALY, GAM was not cost-effective compared with UC (INMB, -$2,713 [95% CI, -$11,767 to $5,801]). The INMB was positive ($2,984 [95% CI, -$7,050 to $14,179]; probability of being cost-effective, 72%) for patients treated with curative intent, but remained negative for patients treated with palliative intent (INMB, -$9,909 [95% CI, -$24,436 to $4,153]). Findings were similar considering a health care payer perspective. CONCLUSION: To our knowledge, this is the first cost-utility analysis of GAM in cancer. GAM was cost-effective for patients with cancer treated with curative but not with palliative intent. The study provides further considerations for future adoption of GAM in practice.


Assuntos
Avaliação Geriátrica , Neoplasias , Idoso , Humanos , Canadá , Análise Custo-Benefício , Neoplasias/economia , Neoplasias/terapia , Aceitação pelo Paciente de Cuidados de Saúde , Anos de Vida Ajustados por Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto
3.
J Natl Cancer Inst ; 115(12): 1483-1496, 2023 12 06.
Artigo em Inglês | MEDLINE | ID: mdl-37738290

RESUMO

BACKGROUND: Frailty and multimorbidity among older cancer patients affect treatment tolerance and efficacy. Comprehensive geriatric assessment and management is recommended to optimize cancer treatment, but its effect on various outcomes remains uncertain. OBJECTIVE: Our objective was to conduct a systematic review and meta-analysis of randomized controlled trials (RCTs) and cost-effectiveness studies comparing comprehensive geriatric assessment (with or without implementation of recommendations) to usual care in older cancer patients. METHODS: We searched MEDLINE, EMBASE, CINAHL, and Cochrane trials from inception to January 27, 2023, for RCTs and cost-effectiveness studies. Pooled estimates for outcomes were calculated using random-effects models. RESULTS: A total of 19 full-text articles representing 17 RCTs were included. Average participant age was 72-80 years, and 31%-62% were female. Comprehensive geriatric assessment type, mode of delivery, and evaluated outcomes varied across studies. Meta-analysis revealed no difference in risk of mortality (risk ratio [RR] = 1.08. 95% confidence interval [CI] = 0.91 to 1.29), hospitalization (RR = 0.92, 95% CI = 0.77 to 1.10), early treatment discontinuation (RR = 0.89, 95% CI = 0.67 to 1.19), initial dose reduction (RR = 0.99, 95% CI = 0.99 to 1.26), and subsequent dose reduction (RR = 0.87, 95% CI = 0.70 to 1.09). However, the risk of treatment toxicity was statistically significantly lower in the comprehensive geriatric assessment group (RR = 0.78, 95% CI = 0.70 to 0.86). No cost-effectiveness studies were identified. CONCLUSION: Compared with usual care, comprehensive geriatric assessment was not associated with a difference in risk of mortality, hospitalization, treatment discontinuation, and dose reduction but was associated with a lower risk of treatment toxicity indicating its potential to optimize cancer treatment in this population. Further research is needed to evaluate cost-effectiveness.


Assuntos
Avaliação Geriátrica , Neoplasias , Feminino , Idoso , Humanos , Idoso de 80 Anos ou mais , Masculino , Hospitalização , Avaliação de Resultados em Cuidados de Saúde , Neoplasias/terapia
4.
J Cardiovasc Comput Tomogr ; 17(6): 373-383, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37635033

RESUMO

Different methodologies have been used to assess the role of AV calcification (AVC) on TAVI outcomes. This systematic review aims to describe the burden of AVC, synthesize the different methods of calcium score quantification, and evaluate the impact of AVC on outcomes after TAVI. We included studies of TAVI patients who had reported AV calcium scoring by contrast-enhanced multidetector CT and the Agatston method. The impact of calcification on TAVI outcomes without restrictions on follow-up time or outcome type was evaluated. Results were reported descriptively, and a meta-analysis was conducted when feasible. Sixty-eight articles were included, with sample sizes ranging from 23 to 1425 patients. Contrast-enhanced calcium scoring was reported in 30 studies, calcium volume score in 28 studies, and unique scoring methods in two. All studies with calcium volume scores had variable protocols, but most utilized a modified Agatston method with variable attenuation threshold values of 300-850 HU. Eight studies used the Agatston method, with the overall mean AV calcium score in studies published from 2010 to 2012 of 3342.9 AU [95%CI: 3150.4; 3535.4, I2 â€‹= â€‹0%]. The overall mean score was lower and heterogenous in studies published from 2014 to 2020 (2658.9 AU [95% CI: 2517.3; 2800.5, I2 â€‹= â€‹79%]. Most studies reported a positive association between calcium burden and increased risk of adverse outcomes, including implantation of permanent pacemaker (7/8 studies), paravalvular leak (13/13 studies), and risk of aortic rupture (2/2 studies). AVC quantification methodology with contrast-enhanced CT is still variable. AVC negatively impacts TAVI outcomes independently of the quantification method.


Assuntos
Estenose da Valva Aórtica , Calcinose , Substituição da Valva Aórtica Transcateter , Humanos , Valva Aórtica/diagnóstico por imagem , Valva Aórtica/cirurgia , Cálcio , Estenose da Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/cirurgia , Estenose da Valva Aórtica/etiologia , Valor Preditivo dos Testes , Substituição da Valva Aórtica Transcateter/efeitos adversos , Tomografia Computadorizada Multidetectores , Calcinose/cirurgia , Índice de Gravidade de Doença , Estudos Retrospectivos , Resultado do Tratamento
5.
Childs Nerv Syst ; 39(12): 3633-3637, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37480522

RESUMO

Primitive myxoid mesenchymal tumour of infancy (PMMTI) is a rare mesenchymal tumour that typically appears in those under 6 months of age and preferentially affects the deep soft tissues of the trunk and paravertebral spinal regions. PMMTI has only recently been described, and there is scarce literature reporting cases regarding the management paradigm of the tumour. We report the case of an 11-week-old male who presented with bilaterally reduced movement and brisk reflexes in his lower limbs, and irritability. Despite numerous radiological investigations, including MRI, PMMTI was only diagnosed upon biopsy and histopathology. Although PMMTI is known to be relatively unresponsive to chemotherapy, we observed a notable decrease in tumour size after a series of chemotherapy sessions. After two-staged surgical resection of the tumour, the patient is currently stable and under close follow-up. In this article, we aim to report on the patient's clinical presentation, investigations, diagnosis, and treatment, while also discussing the findings from a review of the literature pertaining to future approaches in managing PMMTI. Overall, this case highlights the importance of considering PMMTI in the differential diagnosis of deep soft tissue tumours in young infants and the potential for a combination of chemotherapy and surgical resection to be effective in treating this rare tumour.


Assuntos
Neoplasias de Tecidos Moles , Lactente , Masculino , Humanos , Biópsia , Neoplasias de Tecidos Moles/diagnóstico por imagem , Neoplasias de Tecidos Moles/cirurgia , Diagnóstico Diferencial , Extremidade Inferior , Movimento
6.
Curr Oncol Rep ; 25(6): 569-587, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-36995535

RESUMO

PURPOSE OF REVIEW: Patients seek clinical guidance on mushroom supplements that can be given alongside conventional treatments, but most research on such fungi has been preclinical. The current systematic review focused on clinical studies of mushrooms in cancer care conducted in the past 10 years. We searched Medline (Ovid), Embase (Ovid), Scopus (Wiley), and Cochrane Library to identify all mushroom studies conducted in humans published from January 2010 through December 2020. Two authors independently assessed papers for inclusion. RECENT FINDINGS: Of 136 clinical studies identified by screening 2349, 39 met inclusion criteria. The studies included 12 different mushroom preparations. A survival benefit was reported using Huaier granules (Trametes robiniophila Murr) in 2 hepatocellular carcinoma studies and 1 breast cancer study. A survival benefit was also found in 4 gastric cancer studies using polysaccharide-K (polysaccharide-Kureha; PSK) in the adjuvant setting. Eleven studies reported a positive immunological response. Quality-of-life (QoL) improvement and/or reduced symptom burden was reported in 14 studies using various mushroom supplements. Most studies reported adverse effects of grade 2 or lower, mainly nausea, vomiting, diarrhea, and muscle pain. Limitations included small sample size and not using randomized controlled trial design. Many of the reviewed studies were small and observational. Most showed favorable effects of mushroom supplements in reducing the toxicity of chemotherapy, improving QoL, favorable cytokine response, and possibly better clinical outcomes. Nevertheless, the evidence is inconclusive to recommend the routine use of mushrooms for cancer patients. More trials are needed to explore mushroom use during and after cancer treatment.


Assuntos
Agaricales , Neoplasias da Mama , Humanos , Feminino , Qualidade de Vida , Trametes , Náusea
7.
Cancer Cell Int ; 22(1): 419, 2022 Dec 28.
Artigo em Inglês | MEDLINE | ID: mdl-36577970

RESUMO

Cancer is a heterogeneous disease with multifaceted drug resistance mechanisms (e.g., tumour microenvironment [TME], tumour heterogeneity, and immune evasion). Natural products are interesting repository of bioactive molecules, especially those with anticancer activities. Prodigiosin, a red pigment produced by Serratia marcescens, possesses inherent anticancer characteristics, showing interesting antitumour activities in different cancers (e.g., breast, gastric) with low or without harmful effects on normal cells. The present review discusses the potential role of prodigiosin in modulating and reprogramming the metabolism of the various immune cells in the TME, such as T and B lymphocytes, tumour-associated macrophages (TAMs), natural killer (NK) cells, and tumour-associated dendritic cells (TADCs), and myeloid-derived suppressor cells (MDSCs) which in turn might introduce as an immunomodulator in cancer therapy.

8.
PLoS One ; 17(8): e0273580, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36006941

RESUMO

BACKGROUND: A classification system that categorizes International Statistical Classification of Diseases and Related Health Problems, Tenth Revision (ICD-10) diagnosis codes into clinically meaningful categories is important for pediatric clinical and health services research using administrative data. While a Pediatric Clinical Classification System (PECCS) is available for the United States ICD-10 system (i.e, ICD-10-CM), differences in the ICD-10 system between countries limits PECCS use in Canada. OBJECTIVE: To translate PECCS from ICD-10-CM to ICD-10-CA for use in Canada (PECCS-CA), and examine the utility of PECCS-CA in administrative data of pediatric hospital encounters in Ontario, Canada. METHODS: PECCS was translated by mapping each ICD-10-CA code to its corresponding ICD-10-CM code, based on code description and alphanumeric code, using automated functions in Microsoft Excel. All unmatched ICD-10-CA codes were manually matched to an ICD-10-CM code. The ICD-10-CA codes were mapped to a PECCS category based on the placement of the corresponding ICD-10-CM code. Finally, in this cross-sectional study, the utility of PECCS-CA was examined in pediatric hospital encounters in children <18 years of age with an inpatient or same day surgery encounter, between April 1, 2014 to March 31, 2019 in Ontario. RESULTS: In total, 16,992 ICD-10-CA diagnosis codes were mapped to 781 mutually exclusive condition categories that included pediatric specific conditions and treatments in PECCS-CA. From the 781 categories, 777 (99.5%) were derived from the original PECCS, 3 (0.4%) from merging the original PECCS categories, and 1 (0.1%) was newly developed. The PECCS-CA was applied to health administrative data of 911,732 hospital encounters in children. The most prevalent condition in children was low birth weight (n = 54,100 encounters). CONCLUSION: The PECCS-CA is an open-source classification system which maps ICD-10-CA codes into 781 clinically important pediatric categories. The PECCS-CA can be used for pediatric health services and outcomes research in Canada.


Assuntos
Pacientes Internados , Classificação Internacional de Doenças , Criança , Estudos Transversais , Humanos , Ontário , Estados Unidos
9.
Inflammation ; 45(5): 1875-1894, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35639261

RESUMO

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes the cytokine release syndrome (CRS) and leads to multiorgan dysfunction. Mitochondrial dynamics are fundamental to protect against environmental insults, but they are highly susceptible to viral infections. Defective mitochondria are potential sources of reactive oxygen species (ROS). Infection with SARS-CoV-2 damages mitochondria, alters autophagy, reduces nitric oxide (NO), and increases both nicotinamide adenine dinucleotide phosphate oxidases (NOX) and ROS. Patients with coronavirus disease 2019 (COVID-19) exhibited activated toll-like receptors (TLRs) and the Nucleotide-binding and oligomerization domain (NOD-), leucine-rich repeat (LRR-), pyrin domain-containing protein 3 (NLRP3) inflammasome. The activation of TLRs and NLRP3 by SARS-CoV-2 induces interleukin 6 (IL-6), IL-1ß, IL-18, and lactate dehydrogenase (LDH). Herein, we outline the inflammatory circuit of COVID-19 and what occurs behind the scene, the interplay of NOX/ROS and their role in hypoxia and thrombosis, and the important role of ROS scavengers to reduce COVID-19-related inflammation.


Assuntos
COVID-19 , Inflamassomos , Humanos , Inflamassomos/metabolismo , Interleucina-18 , Interleucina-6 , Lactato Desidrogenases , Leucina , NADP , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Óxido Nítrico , Oxirredutases , Espécies Reativas de Oxigênio/metabolismo , SARS-CoV-2 , Receptores Toll-Like
11.
JAMA Netw Open ; 4(7): e2117816, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-34309667

RESUMO

Importance: Identifying high priority pediatric conditions is important for setting a research agenda in hospital pediatrics that will benefit families, clinicians, and the health care system. However, the last such prioritization study was conducted more than a decade ago and used International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) codes. Objectives: To identify conditions that should be prioritized for comparative effectiveness research based on prevalence, cost, and variation in cost of hospitalizations using contemporary data at US children's hospitals. Design, Setting, and Participants: This retrospective cohort study of children with hospital encounters used data from the Pediatric Health Information System database. Children younger than 18 years with inpatient hospital encounters at 45 tertiary care US children's hospitals between January 1, 2016, and December 31, 2019, were included. Data were analyzed from March 2020 to April 2021. Main Outcomes and Measures: The condition-specific prevalence and total standardized cost, the corresponding prevalence and cost ranks, and the variation in standardized cost per encounter across hospitals were analyzed. The variation in cost was assessed using the number of outlier hospitals and intraclass correlation coefficient. Results: There were 2 882 490 inpatient hospital encounters (median [interquartile range] age, 4 [1-12] years; 1 554 024 [53.9%] boys) included. Among the 50 most prevalent and 50 most costly conditions (total, 74 conditions), 49 (66.2%) were medical, 15 (20.3%) were surgical, and 10 (13.5%) were medical/surgical. The top 10 conditions by cost accounted for $12.4 billion of $33.4 billion total costs (37.4%) and 592 815 encounters (33.8% of all encounters). Of 74 conditions, 4 conditions had an intraclass correlation coefficient (ICC) of 0.30 or higher (ie, major depressive disorder: ICC, 0.49; type 1 diabetes with complications: ICC, 0.36; diabetic ketoacidosis: ICC, 0.33; acute appendicitis without peritonitis: ICC, 0.30), and 9 conditions had an ICC higher than 0.20 (scoliosis: ICC, 0.27; hypertrophy of tonsils and adenoids: ICC, 0.26; supracondylar fracture of humerus: ICC, 0.25; cleft lip and palate: ICC, 0.24; acute appendicitis with peritonitis: ICC, 0.21). Examples of conditions high in prevalence, cost, and variation in cost included major depressive disorder (cost rank, 19; prevalence rank, 10; ICC, 0.49), scoliosis (cost rank, 6; prevalence rank, 38; ICC, 0.27), acute appendicitis with peritonitis (cost rank, 13; prevalence rank, 11; ICC, 0.21), asthma (cost rank, 10; prevalence rank, 2; ICC, 0.17), and dehydration (cost rank, 24; prevalence rank, 8; ICC, 0.18). Conclusions and Relevance: This cohort study found that major depressive disorder, scoliosis, acute appendicitis with peritonitis, asthma, and dehydration were high in prevalence, costs, and variation in cost. These results could help identify where future comparative effectiveness research in hospital pediatrics should be targeted to improve the care and outcomes of hospitalized children.


Assuntos
Criança Hospitalizada/estatística & dados numéricos , Prioridades em Saúde/estatística & dados numéricos , Custos Hospitalares/estatística & dados numéricos , Hospitalização/estatística & dados numéricos , Hospitais Pediátricos/estatística & dados numéricos , Adolescente , Apendicite/economia , Apendicite/epidemiologia , Asma/economia , Asma/epidemiologia , Criança , Pré-Escolar , Pesquisa Comparativa da Efetividade , Bases de Dados Factuais , Desidratação/economia , Desidratação/epidemiologia , Transtorno Depressivo Maior/economia , Transtorno Depressivo Maior/epidemiologia , Feminino , Prioridades em Saúde/economia , Hospitalização/economia , Hospitais Pediátricos/economia , Humanos , Lactente , Recém-Nascido , Masculino , Peritonite/economia , Peritonite/epidemiologia , Prevalência , Pesquisa , Estudos Retrospectivos , Escoliose/economia , Escoliose/epidemiologia , Estados Unidos/epidemiologia
12.
Inflamm Res ; 70(8): 877-889, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34086061

RESUMO

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, known as coronavirus disease 2019 (COVID-19) causes cytokine release syndrome (CRS), leading to acute respiratory distress syndrome (ARDS), acute kidney and cardiac injury, liver dysfunction, and multiorgan failure. Although several studies have discussed the role of 5-lipoxygenase (5-LOX) in viral infections, such as influenzae and SARS, it remains unexplored in the pathophysiology of COVID-19. 5-LOX acts on free arachidonic acid (AA) to form proinflammatory leukotrienes (LTs). Of note, numerous cells involved with COVID-19 (e.g., inflammatory and smooth muscle cells, platelets, and vascular endothelium) widely express leukotriene receptors. Moreover, 5-LOX metabolites induce the release of cytokines (e.g., tumour necrosis factor-α [TNF-α], interleukin-1α [IL-1α], and interleukin-1ß [IL-1ß]) and express tissue factor on cell membranes and activate plasmin. Since macrophages, monocytes, neutrophils, and eosinophils can express lipoxygenases, activation of 5-LOX and the subsequent release of LTs may contribute to the severity of COVID-19. This review sheds light on the potential implications of 5-LOX in SARS-CoV-2-mediated infection and the anticipated therapeutic role of 5-LOX inhibitors.


Assuntos
Araquidonato 5-Lipoxigenase/metabolismo , Tratamento Farmacológico da COVID-19 , COVID-19/enzimologia , COVID-19/fisiopatologia , Interleucinas/metabolismo , Inibidores de Lipoxigenase/farmacologia , SARS-CoV-2 , Animais , Ácido Araquidônico/metabolismo , Síndrome da Liberação de Citocina , Citocinas/metabolismo , Inibidores Enzimáticos/farmacologia , Humanos , Inflamação , Leucotrienos/metabolismo , Resultado do Tratamento , Viroses/tratamento farmacológico
13.
Public Health Nutr ; 24(7): 1854-1860, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33563363

RESUMO

OBJECTIVE: The study sought to assess the influence of nutrition education and intervention programmes on nutrition knowledge and dietary practice among both students and staff (including faculty) of Princess Nourah Bint Abdulrahman University in Saudi Arabia. DESIGN: A pretest-posttest, non-randomised experimental study design was implemented at Princess Nourah Bint Abdulrahman University in Riyadh City between September 2019 and February 2020. SETTING: Princess Nourah Bint Abdulrahman University is the largest women's university in the world and has eighteen colleges and institutions and around ninety academic programmes. PARTICIPANTS: The survey was completed by 1824 participants (1350 students and 474 staff/faculty) before the intervention and by a different cohort of 1731 participants (1317 students and 414 staff/faculty) after the intervention. In total, an independent sample of 3555 staff and students participated. Participants were asked about dietary knowledge and practices. Dietary knowledge entailed food variety and nutrients, fast food and its poor nutritional value, and the influence of cooking style on the nutritional quality of food. Dietary practices involved eating breakfast; consuming salt/sugar, eating high-salt food; eating pre-packaged food and consumption of vegetables, fruits, supplements, water and caffeine. RESULTS: The majority of the sample consisted of students (75·1 %) and had not been diagnosed with any disease (73·7 %). The result of the current study showed that nutrition knowledge improved after completion of the nutrition programme. CONCLUSIONS: The nutrition awareness programme improved students' nutritional knowledge; however, there was no significant effect on their dietary practices. Future nutrition awareness programmes should separate activities for students and staff, focusing on one target population at a time.


Assuntos
Educação em Saúde , Universidades , Dieta , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Estudantes , Verduras
14.
Sci Rep ; 10(1): 14706, 2020 09 07.
Artigo em Inglês | MEDLINE | ID: mdl-32895397

RESUMO

Prodigiosin, a secondary metabolite red pigment produced by Serratia marcescens, has an interesting apoptotic efficacy against cancer cell lines with low or no toxicity on normal cells. HSP90α is known as a crucial and multimodal target in the treatment of TNBC. Our research attempts to assess the therapeutic potential of prodigiosin/PU-H71 combination on MDA-MB-231 cell line. The transcription and protein expression levels of different signalling pathways were assessed. Treatment of TNBC cells with both drugs resulted in a decrease of the number of adherent cells with apoptotic effects. Prodigiosin/PU-H71 combination increased the levels of caspases 3,8 and 9 and decreased the levels of mTOR expression. Additionally, there was a remarkable decrease of HSP90α transcription and expression levels upon treatment with combined therapy. Also, EGFR and VEGF expression levels decreased. This is the first study to show that prodigiosin/PU-H71 combination had potent cytotoxicity on MDA-MB-231 cells; proving to play a paramount role in interfering with key signalling pathways in TNBC. Interestingly, prodigiosin might be a potential anticancer agent to increase the sensitivity of TNBC cells to apoptosis. This study provides a new basis for upcoming studies to overcome drug resistance in TNBC cells.


Assuntos
Benzodioxóis/farmacologia , Prodigiosina/farmacologia , Purinas/farmacologia , Neoplasias de Mama Triplo Negativas/tratamento farmacológico , Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Caspases/metabolismo , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Avaliação Pré-Clínica de Medicamentos , Receptores ErbB/metabolismo , Feminino , Proteínas de Choque Térmico HSP90/metabolismo , Humanos , Transdução de Sinais/efeitos dos fármacos , Serina-Treonina Quinases TOR/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo
15.
Heliyon ; 5(6): e01955, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31294107

RESUMO

In recent years, polysaccharide-decorated superparamagnetic iron oxide nanoparticles (SPIONs) have gained attention in the field of "nanotheranostics" with integrated diagnostic and therapeutic functions. Carboxymethyl Assam bora rice starch-stabilized SPIONs (CM-ABRS SPIONs), synthesized by co-precipitation method, has already shown exciting potential towards magnetic drug targeting potential. After establishing it as a promisable targeting carrier, the present study is focused on the next step i.e. to evaluate its In vitro anti-tumor potential by loading anticancer drug "Doxorubicin hydrochloride (DOX)" onto CM-ABRS SPIONs. DOX-loaded CM-ABRS SPIONs were physico-chemically characterized by DLS, zeta-potential, TEM, FT-IR, XRD, and VSM analysis. Spectroflourimetric analysis confirmed the maximum loading of DOX up to 6% (w/w) onto CM-ABRS SPIONs via electrostatic interactions. Further, molecular level drug performance was investigated by docking study against receptors (HER-2 and Folate receptor-α) over expressed in cancer cells and MTT assay (in MCF-7 and HeLa cell line), which conferred promisable results of DOX-CM-ABRS SPIONs as compared to standard DOX solution.

16.
Materials (Basel) ; 12(3)2019 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-30717431

RESUMO

Magnetic Nanoparticles (MNPs) are of great interest in biomedicine, due to their wide range of applications. During recent years, one of the most challenging goals is the development of new strategies to finely tune the unique properties of MNPs, in order to improve their effectiveness in the biomedical field. This review provides an up-to-date overview of the methods of synthesis and functionalization of MNPs focusing on Iron Oxide Nanoparticles (IONPs). Firstly, synthesis strategies for fabricating IONPs of different composition, sizes, shapes, and structures are outlined. We describe the close link between physicochemical properties and magnetic characterization, essential to developing innovative and powerful magnetic-driven nanocarriers. In conclusion, we provide a complete background of IONPs functionalization, safety, and applications for the treatment of Central Nervous System disorders.

17.
AAPS PharmSciTech ; 19(1): 134-147, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28631252

RESUMO

Carboxymethyl Assam Bora rice starch (CM-ABRS) was chemically synthesized in non-aqueous medium with the optimum degree of substitution (DS) of 1.23, and physicochemically characterized by FT-IR, DSC, XRD, and SEM analysis. Comparative evaluation of CM-ABRS with native starch (ABRS) for powder flow characteristics, swelling index, apparent solubility, rheological properties, textural properties, and mucoadhesive studies were carried out. The aim of the current work was to investigate the potential of CM-ABRS as a novel carrier for the water-soluble chemotherapeutic, doxorubicin hydrochloride (DOX). Formation of drug/polymer complex (DOX-CM-ABRS) via electrostatic interaction has been evaluated for the controlled release of DOX in three different pH media (phosphate-buffered saline (PBS), pH 7.4, 6.8, and 5.5). In vitro drug release studies illustrated faster release of drug in PBS at pH 5.5 as compared to pH 6.8 and pH 7.4, respectively, indicating the importance of pH-sensitive drug release from the DOX-CM-ABRS complex in malignant tissues.


Assuntos
Antibióticos Antineoplásicos/administração & dosagem , Doxorrubicina/administração & dosagem , Portadores de Fármacos/química , Preparações de Ação Retardada , Portadores de Fármacos/síntese química , Liberação Controlada de Fármacos , Concentração de Íons de Hidrogênio , Oryza , Solubilidade , Amido/química , Eletricidade Estática
18.
Electron Physician ; 9(9): 5349-5353, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29038720

RESUMO

BACKGROUND AND AIM: Senile prostatic enlargement due to benign prostatic hyperplasia (BPH) is a common problem among older men, and is responsible for considerable disability. This study was conducted to determine the prevalence and determinants of the clinically diagnosed prostatic enlargement among elderly men in Arar, Northern Saudi Arabia. METHODS: This cross-sectional study was carried out on all consented elderly males attending the outpatient clinic of the urology department of Arar Central Hospital from February 2017 to July 30, 2017. Each participant underwent a general examination and digital per rectal to detect general chronic diseases, obesity and prostatic enlargement. Data were analyzed by SPSS version 16, using descriptive statistics and Chi-squared test. RESULTS: Among 81 elderly male participants in the study, 19.8% had clinically diagnosed senile prostatic enlargement (SPE) and 3.7% had prostatic tumors. There was significant relation between SPE and age as 6.2% of cases were 60-69 years, 43.8% were 70-79 years and 44.0% were 80 years or more (p<0.05). There was also significant relation between SPE and obesity as 62.5% of cases were obese and 37.5% were non obese (p<0.05). There was no significant relation with marital status, smoking or diabetes mellitus (p<0.05). CONCLUSION: Senile prostatic enlargement is one of the significant important issues in public health in Arar city, Northern Saudi Arabia. The prevalence of this condition reaches 19.3%, thereby placing even greater burden on the quality of life of the elderly and on the health system in the region.

19.
Int J Surg ; 45: 14-17, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28673865

RESUMO

INTRODUCTION: Evidence-based medicine works best if the evidence is reported well. Past studies have shown reporting quality to be lacking in the field of surgery. Reporting guidelines are an important tool for authors to optimize the reporting of their research. The objective of this study was to analyse the frequency and strength of recommendation for such reporting guidelines within surgical journals. METHODS: A systematic review of the 198 journals within the Journal Citation Report 2014 (surgery category) published by Thomson Reuters was undertaken. The online guide for authors for each journal was screened by two independent groups and results compared. Data regarding the presence and strength of recommendation to use reporting guidelines was extracted. RESULTS: 193 journals were included (as five appeared twice having changed their name). These had a median impact factor of 1.526 (range 0.047-8.327), with a median of 145 articles published per journal (range 29-659), with 34,036 articles published in total over the two-year window 2012-2013. The majority (62%) of surgical journals made no mention of reporting guidelines within their guidelines for authors. Of the 73 (38%) that did mention them, only 14% (10/73) required the use of all relevant reporting guidelines. The most frequently mentioned reporting guideline was CONSORT (46 journals). CONCLUSIONS: The mention of reporting guidelines within the guide for authors of surgical journals needs improvement. Authors, reviewers and editors should work to ensure that research is reported in line with the relevant reporting guidelines. Journals should consider hard-wiring adherence to them.


Assuntos
Medicina Baseada em Evidências/normas , Cirurgia Geral/normas , Guias como Assunto/normas , Publicações Periódicas como Assunto/normas , Projetos de Pesquisa/normas , Humanos , Fator de Impacto de Revistas
20.
Front Surg ; 3: 50, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27695693

RESUMO

INTRODUCTION: The Declaration of Helsinki 2013 encourages the registration of all research studies involving human participants. However, emphasis has been placed on prospective clinical trials, and it is estimated that only 10% of observational studies are registered. In response, Research Registry® was launched in February 2015; a retrospectively curated registry that is free and easy to use. Research Registry® enables prospective or retrospective registration of studies, including those study types that cannot be registered on existing registries. In this study, we describe the first 500 registrations on Research Registry®. METHODS: Since the launch of Research Registry® in February 2015, data of registrations have been collected, including type of studies registered, country of origin, and data curation activity. Inappropriate registrations, such as duplicates, were identified by the data curation process. These were removed from the database or modified as required. A quality score was assigned for each registration, based on Sir Austin Bradford Hill's criteria on what research studies should convey. Changes in quality scores over time were assessed. RESULTS: A total of 500 studies were registered on Research Registry® from February 2015 to October 2015, with a total of 1.7 million patients enrolled. The most common study types were retrospective cohort studies (37.2%), case series (14.8%), and first-in-man case reports (10.4%). Registrations were received from 57 different countries; the most submissions were received from Turkey, followed by China and the United Kingdom. Retrospective data curation identified 80 studies that were initially registered as the incorrect study type, and were subsequently correct. The Kruskal-Wallis test identified a significant improvement in quality scores for registrations from February 2015 to October 2015 (p < 0.0001). CONCLUSIONS: Since its conception in February 2015, Research Registry® has established itself as a new registry that is free, easy to use, and enables the registration of various study types, including observational studies and first-in-man case reports. Going forward, our plan is to continue developing Research Registry® in line with user feedback and usability studies. We plan to further promote Research Registry® to advance the cause of registration of research, to increase compliance with the Declaration of Helsinki 2013.

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