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2.
J Plast Reconstr Aesthet Surg ; 75(8): 2831-2870, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35780000

RESUMO

BACKGROUND: Micropigmentation is a well-recognised option for nipple-areola complex reconstruction, as part of the breast reconstruction pathway for patients following mastectomy. As a part of delayed breast reconstruction, this treatment was put on hold during the COVID-19 pandemic. AIMS: To assess the views of patients regarding micropigmentation in response to the COVID-19 pandemic, and whether their attitudes to seeking out this part of the reconstructive journey had been altered. METHODS: A questionnaire undertaken with 53 patients between August & September 2020 attending the Micropigmentation clinic. FINDINGS: 81.1% of patients reported COVID-19 had not impacted their decision, with a similar proportion happy to proceed with the treatment at the time of questioning. CONCLUSIONS: The results highlight the importance of nipple-areola complex to our patients' reconstructive journey.


Assuntos
Neoplasias da Mama , COVID-19 , Mamoplastia , Neoplasias da Mama/cirurgia , COVID-19/epidemiologia , Feminino , Humanos , Mamoplastia/métodos , Mastectomia/métodos , Mamilos/cirurgia , Pandemias , Estudos Retrospectivos
4.
Complement Ther Med ; 54: 102549, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33183667

RESUMO

OBJECTIVES: Patients with cancer frequently use botanical medications. The concomitant use of such medications by patients on commercial trials has not been well-described, despite the importance of these trials for evaluating the safety and efficacy of new agents. We sought to describe the use of botanical medications taken by patients with prostate cancer enrolled on global commercial trials. DESIGN: Retrospective study. SETTING: Regulatory repository of commercial clinical trial data. INTERVENTIONS: Anti-cancer therapy. MAIN OUTCOME MEASURES: Botanical and medication use data were pooled across six international commercial randomized trials for metastatic prostate cancer with detailed information on medication and indications. Botanical products were considered to have potential for drug interaction if they led to a change in drug exposure in human trials. Potential for interaction was ascertained by PubMed review. Descriptive statistics were used for analysis. RESULTS: Of 7318 enrolled patients, 700 (10 %) reported botanical use at any time and 653 (9%) reported use of botanical products while on trial. Nearly half of botanical product types were not classified by plant (43 %). The highest proportion of botanical use was among patients in Asian countries (32 %), followed by patients in North America (13 %). Eighty-six different types of botanical products were used; of these, nineteen had a patient-reported anti-cancer indication. CONCLUSIONS: Botanical medicine use among patients with prostate cancer in commercial trials is moderate, although it varies by region. Practitioners should be aware of the use of botanical interventions in a clinical trial context.


Assuntos
Terapias Complementares/métodos , Terapias Complementares/estatística & dados numéricos , Fitoterapia/métodos , Fitoterapia/estatística & dados numéricos , Preparações de Plantas , Neoplasias da Próstata/tratamento farmacológico , Quimioterapia Combinada , Humanos , Masculino , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Retrospectivos
5.
Clin Microbiol Infect ; 26(7): 944.e9-944.e15, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31811914

RESUMO

OBJECTIVES: To describe the epidemiology, management and outcome of individuals with mucormycosis; and to evaluate the risk factors associated with mortality. METHODS: We conducted a prospective observational study involving consecutive individuals with proven mucormycosis across 12 centres from India. The demographic profile, microbiology, predisposing factors, management and 90-day mortality were recorded; risk factors for mortality were analysed. RESULTS: We included 465 patients. Rhino-orbital mucormycosis was the most common (315/465, 67.7%) presentation followed by pulmonary (62/465, 13.3%), cutaneous (49/465, 10.5%), and others. The predisposing factors included diabetes mellitus (342/465, 73.5%), malignancy (42/465, 9.0%), transplant (36/465, 7.7%), and others. Rhizopus species (231/290, 79.7%) were the most common followed by Apophysomyces variabilis (23/290, 7.9%), and several rare Mucorales. Surgical treatment was performed in 62.2% (289/465) of the participants. Amphotericin B was the primary therapy in 81.9% (381/465), and posaconazole was used as combination therapy in 53 (11.4%) individuals. Antifungal therapy was inappropriate in 7.6% (30/394) of the individuals. The 90-day mortality rate was 52% (242/465). On multivariate analysis, disseminated and rhino-orbital (with cerebral extension) mucormycosis, shorter duration of symptoms, shorter duration of antifungal therapy, and treatment with amphotericin B deoxycholate (versus liposomal) were independent risk factors of mortality. A combined medical and surgical management was associated with a better survival. CONCLUSIONS: Diabetes mellitus was the dominant predisposing factor in all forms of mucormycosis. Combined surgical and medical management was associated with better outcomes. Several gaps surfaced in the management of mucormycosis. The rarer Mucorales identified in the study warrant further evaluation.


Assuntos
Antifúngicos/uso terapêutico , Fungos/classificação , Mucormicose/epidemiologia , Adulto , Terapia Combinada , Gerenciamento Clínico , Feminino , Humanos , Índia/epidemiologia , Pneumopatias Fúngicas/epidemiologia , Pneumopatias Fúngicas/mortalidade , Masculino , Pessoa de Meia-Idade , Mucormicose/classificação , Mucormicose/mortalidade , Mucormicose/terapia , Estudos Prospectivos , Fatores de Risco , Dermatopatias/epidemiologia , Dermatopatias/microbiologia , Análise de Sobrevida , Resultado do Tratamento
6.
Sci Rep ; 9(1): 17578, 2019 11 26.
Artigo em Inglês | MEDLINE | ID: mdl-31772271

RESUMO

Polycystic ovary syndrome (PCOS) is the most common endocrinological disorder of fertile-aged women. Several adverse pregnancy outcomes and abnormalities of the placenta have been associated with PCOS. By using quantitative label-free proteomics we investigated whether changes in the plasma proteome of pregnant women with PCOS could elucidate the mechanisms behind the pathologies observed in PCOS pregnancies. A total of 169 proteins with ≥2 unique peptides were detected to be differentially expressed between women with PCOS (n = 7) and matched controls (n = 20) at term of pregnancy, out of which 35 were significant (p-value < 0.05). A pathway analysis revealed that networks related to humoral immune responses, inflammatory responses, cardiovascular disease and cellular growth and proliferation were affected by PCOS. Classification of cases and controls was carried out using principal component analysis, orthogonal projections on latent structure-discriminant analysis (OPLS-DA), hierarchical clustering, self-organising maps and ROC-curve analysis. The most significantly enriched proteins in PCOS were properdin and insulin-like growth factor II. In the dataset, properdin had the best predictive accuracy for PCOS (AUC = 1). Additionally, properdin abundances correlated with AMH levels in pregnant women.


Assuntos
Síndrome do Ovário Policístico/sangue , Complicações na Gravidez/sangue , Adulto , Proteínas Sanguíneas/análise , Estudos de Casos e Controles , Feminino , Humanos , Imunidade Humoral , Inflamação/sangue , Fator de Crescimento Insulin-Like II/análise , Síndrome do Ovário Policístico/complicações , Gravidez/sangue , Análise de Componente Principal , Properdina/análise , Proteoma , Proteômica/métodos
7.
J Mycol Med ; 29(4): 372-374, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31570305

RESUMO

Secondary amyloidosis results from the deposition of abnormally folded proteins in body organs due to chronic inflammatory disorders. Kidneys are the most commonly affected organ and manifest as nephrotic syndrome with or without renal failure. Chronic pulmonary aspergillosis (CPA) is a chronic infection of lung parenchyma affecting those with an underlying structural lung disease. Herein, we present a case of CPA where the initial manifestation was that of nephrotic syndrome due to renal amyloidosis. We also perform a systematic review for studies describing secondary amyloidosis due to CPA.


Assuntos
Amiloidose/diagnóstico , Amiloidose/microbiologia , Rim/patologia , Síndrome Nefrótica/complicações , Aspergilose Pulmonar/complicações , Adulto , Doença Crônica , Feminino , Humanos , Rim/microbiologia
8.
South Asian J Cancer ; 7(2): 110-114, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29721475

RESUMO

Young women diagnosed with cancer today have a greater chance of long-term survival than ever before. Successful survivorship for this group of patients includes maintaining a high quality of life after a cancer diagnosis and treatment; however, lifesaving treatments such as chemotherapy, radiation, and surgery can impact survivors by impairing reproductive and endocrine health. Expert oncologists along with reproductive medicine specialists discuss fertility preservation options in this chapter since fertility preservation is becoming a priority for young women with breast cancer. This expert group used data from published literature, practical experience and opinion of a large group of academic oncologists to arrive at these practical consensus recommendations for the benefit of community oncologists.

9.
Physiol Mol Biol Plants ; 23(4): 731-744, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29158624

RESUMO

Plants are confronted with a variety of environmenmtal stresses resulting in enhanced production of ROS. Plants require a threshold level of ROS for vital functions and any change in their concentration alters the entire physiology of plant. Delicate balance of ROS is maintained by an efficient functioning of intriguing indigenous defence system called antioxidant system comprising enzymatic and non enzymatic components. Down regulation of antioxidant system leads to ROS induced oxidative stress causing damage to important cellular structures and hence anomalies in metabolism. Proper mineral nutrition, in addition to other agricultural practices, forms an important part for growth and hence the yield. Potassium (K) is a key macro-element regulating growth and development through alterations in physiological and biochemical attributes. K has been reported to result into accumulation of osmolytes and augmentation of antioxidant components in the plants exposed to water and salt stress. In the present review an effort has been made to revisit the old findings and the current advances in research regarding the role of optimal, suboptimal and deficient K soil status on growth under normal and stressful conditions. Effect of K deficiency and sufficiency is discussed and the information about the K mediated antioxidant regulation and plant response is highlighted.

11.
Pediatr Neurol ; 68: 44-48.e2, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-28214165

RESUMO

BACKGROUND: Agenesis of the corpus callosum can occur in individuals with epilepsy, either in isolation or as part of various neurological conditions, such as Aicardi syndrome. In this study, we evaluated the clinical and neuroradiological differences between children with nonsyndromic agenesis of the corpus callosum and those with Aicardi syndrome. METHODS: We evaluated 31 children with epilepsy and agenesis of the corpus callosum (11 males, 20 females), 14 of whom had Aicardi syndrome (all females). We compared their clinical evaluations, radiological and electrophysiological findings, treatments, and their outcome. RESULTS: Median age at seizure onset was lower in the Aicardi syndrome group compared with nonsyndromic agenesis of the corpus callosum (two versus five months, P = 0.006). The developmental impairment in terms of verbalization and ambulation was significantly worse in patients with Aicardi syndrome. The severity of magnetic resonance imaging (MRI) and glucose metabolism positron emission tomography (PET) involvement was more extensive in children with Aicardi syndrome than in nonsyndromic agenesis of the corpus callosum. In both groups, the PET scan showed a much more extensive area of involvement than suggested by the MRI scan. Four children underwent epilepsy surgery with significant improvement, but were not seizure free. Outcome was worse in those with PET showing abnormalities in the nonsurgical hemisphere despite normal appearance on MRI. All children who did not undergo surgery also continued to have seizures at last follow-up. CONCLUSIONS: Children with Aicardi syndrome have earlier seizure onset, worse developmental outcome, and larger areas of brain abnormalities on neuroimaging compared with nonsyndromic agenesis of the corpus callosum patients. PET reveals larger area of abnormalities, compared with MRI. Although epilepsy surgery in agenesis of the corpus callosum may offer some palliative benefit in seizure frequency, none of our patients became seizure free.


Assuntos
Agenesia do Corpo Caloso/diagnóstico por imagem , Agenesia do Corpo Caloso/fisiopatologia , Síndrome de Aicardi/diagnóstico por imagem , Síndrome de Aicardi/fisiopatologia , Epilepsia/diagnóstico por imagem , Epilepsia/fisiopatologia , Idade de Início , Agenesia do Corpo Caloso/cirurgia , Síndrome de Aicardi/cirurgia , Encéfalo/diagnóstico por imagem , Encéfalo/fisiopatologia , Encéfalo/cirurgia , Pré-Escolar , Eletroencefalografia , Epilepsia/cirurgia , Feminino , Seguimentos , Glucose/metabolismo , Humanos , Lactente , Recém-Nascido , Imageamento por Ressonância Magnética , Masculino , Neuroimagem , Tomografia por Emissão de Pósitrons , Estudos Retrospectivos , Convulsões/diagnóstico por imagem , Convulsões/fisiopatologia , Convulsões/cirurgia
12.
Protoplasma ; 254(4): 1471-1486, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27783181

RESUMO

Pot experiments were conducted to find out the effectivity of K on Triticum aestivum L cultivars. Polyethylene glycol 6000 (PEG 6000) was used as an osmoticum to induce osmotic stress under sand culture setting up the water potential of external solution at -3 and -5 bars. In pots, plants were raised under restricted and normal irrigation and K was applied in varying doses (0, 20, 40, 60 kg ha-1) and estimation of different physiological and biochemical parameters was done at two developmental stages, i.e., preflowering and flowering. Supplementation of K resulted in obvious increase in growth and activity of antioxidant enzymes in both normal and stressed plants. Added potassium increased total phenols and tannins thereby strengthening the components of both the enzymatic as well as non-enzymatic antioxidant system. Under both normal and stressed conditions, K-fed plants experienced significant increase in the synthesis of osmolytes like free proline, amino acids, and sugars which assumes special significance in growth under water stress conditions. Wheat plants accumulating greater K were able to counteract the water stress-induced changes by maintaining lower Na/K ratio.


Assuntos
Ácido Ascórbico/metabolismo , Sequestradores de Radicais Livres/metabolismo , Potássio/fisiologia , Triticum/metabolismo , Ascorbato Peroxidases/metabolismo , Carotenoides/biossíntese , Catalase/metabolismo , Clorofila/biossíntese , Desidratação/metabolismo , Glutationa Redutase/metabolismo , Peroxidação de Lipídeos , Monofenol Mono-Oxigenase/metabolismo , Osmorregulação , Pressão Osmótica , Estresse Oxidativo , Fenilalanina Amônia-Liase/metabolismo , Proteínas de Plantas/metabolismo , Sódio/metabolismo , Superóxido Dismutase/metabolismo , Triticum/crescimento & desenvolvimento
13.
Arch Virol ; 162(4): 979-985, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28013385

RESUMO

We applied a probe-based real-time loop-mediated isothermal amplification (Cy5-RTqLAMP) technique targeting the avian reovirus (ARV) S3 gene to develop a rapid, sensitive, and specific method for virus detection and quantification. This test specifically detected the presence of ARV, but not other viruses or bacteria present in clinical or artificially spiked samples, including Newcastle disease virus, infectious bursal disease virus, fowl adenovirus, Marek's disease virus, Escherichia coli, and Salmonella spp. This test can detect ARV in less than one hour with an analytical sensitivity of 10 viral gene copies and 1 fg of total cDNA. The Cy5-RTqLAMP does not yield false positive results and is 100 times more sensitive than conventional PCR. This test was shown to be able to detect the presence of ARV in clinical samples. A similar strategy may be used for detection of other important human and animal viral pathogens.


Assuntos
DNA Viral/genética , Técnicas de Amplificação de Ácido Nucleico/métodos , Orthoreovirus Aviário/isolamento & purificação , Doenças das Aves Domésticas/virologia , Infecções por Reoviridae/veterinária , Animais , Galinhas , Primers do DNA/genética , Humanos , Técnicas de Amplificação de Ácido Nucleico/instrumentação , Orthoreovirus Aviário/classificação , Orthoreovirus Aviário/genética , Reação em Cadeia da Polimerase/instrumentação , Reação em Cadeia da Polimerase/métodos , Doenças das Aves Domésticas/diagnóstico , Infecções por Reoviridae/diagnóstico , Infecções por Reoviridae/virologia
15.
Int J Tuberc Lung Dis ; 20(10): 1386-1391, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27725052

RESUMO

OBJECTIVE: To determine the diagnostic accuracy of pleural fluid adenosine deaminase (ADA) in diagnosing tuberculous pleural effusion (TPE) among Indian patients using systematic review and meta-analysis. DESIGN: The PubMed, Embase, IndMED and Cochrane databases and other relevant publications were searched to identify Indian studies evaluating the sensitivity and specificity of ADA in diagnosing TPE. Pooled diagnostic accuracy measures and 95% confidence intervals (95%CI) were generated using a bivariate random-effects model, and examined using forest plots and hierarchical summary receiver operating characteristic (HSROC) curves. RESULTS: Forty publications with 3524 patients were studied. Pooled sensitivity, specificity and diagnostic odds ratio estimates were high (0.94, 95%CI 0.89-0.96; 0.89, 95%CI 0.83-0.93; and 119.85, 95%CI 48.35-297.08, respectively). The area under the HSROC curve was 0.966. The most common ADA threshold was 40 international units (IU)/l in 18 studies. Pooled positive and negative likelihood ratios for thresholds between 38 and 42 IU/l were respectively 6.80 (95%CI 4.18-11.07) and 0.06 (95%CI 0.03-0.11). There was no clear change in diagnostic performance with increasing ADA thresholds. Multivariate meta-regression did not reveal any factor that significantly influenced the substantial heterogeneity between studies. CONCLUSION: Pleural fluid ADA has good diagnostic accuracy for TPE in Indian patients, and appears more useful at excluding TPE at a threshold value of around 40 IU/l.


Assuntos
Adenosina Desaminase/metabolismo , Derrame Pleural/diagnóstico , Derrame Pleural/epidemiologia , Tuberculose Pleural/diagnóstico , Tuberculose Pleural/epidemiologia , Humanos , Índia/epidemiologia , Prevalência , Sensibilidade e Especificidade
16.
Eur Ann Allergy Clin Immunol ; 48(3): 99-102, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27152607

RESUMO

Allergic bronchopulmonary aspergillosis (ABPA) is a pulmonary disorder that results from immune responses mounted against antigens of Aspergillus fumigatus, resulting in non-specific respiratory symptoms and structural lung damage. Classically defined in individuals suffering from bronchial asthma and cystic fibrosis, ABPA has recently been described in other lung diseases including COPD, pulmonary tuberculosis, idiopathic bronchiectasis and others. Herein, we report the first case of ABPA complicating Swyer-James-Macleod's syndrome that was successfully treated with oral antifungal therapy.


Assuntos
Aspergilose Broncopulmonar Alérgica , Aspergillus fumigatus , Asma , Bronquiectasia , Humanos
17.
J Wound Care ; 25(4): 199-200, 202-4, 206-7, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27064369

RESUMO

OBJECTIVE: A randomised controlled trial to compare negative pressure wound therapy (NPWT) using our innovative negative pressure device (NPD) and the standard pressure ulcer (PU) wound dressing of in traumatic paraplegia patients. METHOD: This study was conducted in the Department of Orthopaedic Surgery at King George's Medical University, Lucknow, India. Traumatic paraplegia patients with sacral pressure ulcers of stage 3 and 4 were randomised into two groups, receiving either standard wound dressings or NPWT with NPD. The outcomes monitored were length, width (surface area), depth of PU, exudates, discharge, tissue type (necrotic, slough and red granulating tissue), and cost-effectiveness during 0 to 9 weeks follow-up. RESULTS: Length and width were significantly (p<0.01) decreased in NPWT group as compared with standard care group at week 9. At weeks 1, 2 and 3, depth was significantly (p<0.05) higher in NPWT group, whereas at week 9 a significant reduction (p=0.01) was observed. Exudates were significantly (p=0.001) lower in NPWT group at weeks 4 and 9. Conversion of slough into red granulation tissue was significantly higher in NPWT group (p=0.001). Discharge became significantly (p=0.001) lower in NPWT at week 2 and no discharge was observed after week 6. In all parameters, decrease was larger in NPWT group compared with standard care, which was significant for exudates type (p=0.03) and tissue type (p=0.004). CONCLUSION: Our NPD is better than standard wound care procedures and cost-effective for management of PU.


Assuntos
Bandagens , Tratamento de Ferimentos com Pressão Negativa/instrumentação , Úlcera por Pressão/terapia , Região Sacrococcígea , Adulto , Gerenciamento Clínico , Exsudatos e Transudatos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tratamento de Ferimentos com Pressão Negativa/métodos , Paraplegia/complicações , Úlcera por Pressão/complicações , Resultado do Tratamento , Cicatrização , Adulto Jovem
18.
J Perinatol ; 36 Suppl 1: S36-48, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-27109091

RESUMO

Surfactant replacement therapy (SRT) has been shown to reduce mortality and air leaks in preterm neonates from high-income countries (HICs). The safety and efficacy of SRT in low- and middle- income countries (LMICs) have not been systematically evaluated. The major objectives of this review were to assess the (1) efficacy and safety, and (2) feasibility and cost effectiveness of SRT in LMIC settings. We searched the following databases-MEDLINE, CENTRAL, CINAHL, EMBASE and WHOLIS using the search terms 'surfactant' OR 'pulmonary surfactant'. Both experimental and observational studies that enrolled preterm neonates with or at-risk of respiratory distress syndrome (RDS) and required surfactant (animal-derived or synthetic) were included. A total of 38 relevant studies were found; almost all were from level-3 neonatal units. Pooled analysis of two randomized controlled trials (RCTs) and 22 observational studies showed a significant reduction in mortality at the last available time point in neonates who received SRT (relative risk (RR) 0.67; 95% confidence interval (CI) 0.57 to 0.79). There was also a significant reduction in the risk of air leaks (five studies; RR 0.51; 0.29 to 0.90). One RCT and twelve observational studies reported the risk of bronchopulmonary dysplasia (BPD) with contrasting results; while the RCT and most before-after/cohort studies showed a significant reduction or no effect, the majority of the case-control studies demonstrated significantly higher odds of receiving SRT in neonates who developed BPD. Two studies-one RCT and one observational-found no difference in the proportion of neonates developing pulmonary hemorrhage, while another observational study reported a higher incidence in those receiving SRT. The failure rate of the intubate-surfactant-extubate (InSurE) technique requiring mechanical ventilation or referral varied from 34 to 45% in four case-series. No study reported on the cost effectiveness of SRT. Available evidence suggests that SRT is effective, safe and feasible in level-3 neonatal units and has the potential to reduce neonatal mortality and air leaks in low-resource settings as well. However, there is a need to generate more evidence on the cost effectiveness of SRT and its effect on BPD in LMIC settings.


Assuntos
Países em Desenvolvimento , Surfactantes Pulmonares/uso terapêutico , Síndrome do Desconforto Respiratório do Recém-Nascido/tratamento farmacológico , Displasia Broncopulmonar/etiologia , Estudos de Casos e Controles , Idade Gestacional , Humanos , Lactente , Mortalidade Infantil , Recém-Nascido , Recém-Nascido Prematuro , Unidades de Terapia Intensiva Neonatal/estatística & dados numéricos , Estudos Observacionais como Assunto , Surfactantes Pulmonares/economia , Ensaios Clínicos Controlados Aleatórios como Assunto , Respiração Artificial/efeitos adversos , Síndrome do Desconforto Respiratório do Recém-Nascido/mortalidade , Risco
19.
Ann R Coll Surg Engl ; 98(5): 303-7, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27023638

RESUMO

INTRODUCTION: We report our experience with extended right hemicolectomy (ERH) and left hemicolectomy (LH) for the treatment of cancers located between the distal transverse and the proximal descending colon, and compare postoperative morbidity, mortality, pathological results and survival for the two techniques. METHODS: A retrospective review was performed of a single institution series over ten years. Patients who underwent different operations, had benign disease or received palliative resections were excluded. Data collected were patient demographics, type and duration of surgery, tumour site, postoperative complications and histology results. RESULTS: Ninety-eight patients were analysed (64 ERHs, 34 LHs). ERH was conducted using an open approach in 93.8% of cases compared with 73.5% for LH. The anastomotic leak rate was similar for both groups (ERH: 6.3%, LH: 5.9%). This was also the case for other postoperative complications, mortality (ERH: 1.6%, LH: 2.9%) and overall survival (ERH: 50.4 months, LH: 51.8 months). All but one patient in the ERH cohort had clear surgical margins. Nodal evaluation for staging was adequate in 78.1% of ERH cases and 58.8% of LH cases. CONCLUSIONS: In our experience, both ERH and LH are adequate for tumours located between the distal transverse and the proximal descending colon.


Assuntos
Colectomia/efeitos adversos , Colectomia/métodos , Colo Descendente/cirurgia , Neoplasias Colorretais/cirurgia , Idoso , Idoso de 80 Anos ou mais , Colectomia/estatística & dados numéricos , Neoplasias Colorretais/epidemiologia , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento
20.
J Mech Behav Biomed Mater ; 59: 57-70, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26745721

RESUMO

Magnesium is presently attracting a lot of interest as a replacement to clinically used orthopaedic implant materials, due to its ability to solve the stress shielding problems, biodegradability and osteocompatibility. However, the strength of Mg is still lower than the requirement and it becomes worse after it starts degrading fast, while being exposed in living body environment. This research explores the effectiveness of 'grain refinement through deformation', as a tool to modify the strength (while keeping elastic modulus unaffected) of Mg based alloys in orthopaedic application. Hot rolled Mg-3wt% Zn alloy (MZ3) has been investigated for its potential in orthopaedic implant. Microstructure, mechanical properties, bio-corrosion properties and biocompatibility of the rolled samples are probed into. Grain size gets refined significantly with increasing amount of deformation. The alloy experiences a marked improvement in hardness, yield strength, ultimate tensile strength, strain and toughness with finer grain size. An increment in accelerated corrosion rate is noted with decreasing grain size, which is correlated to the increased grain boundary area and mechano-chemical dissolution. However, immersion test in simulated body fluid (SBF) reveals reduction in corrosion rate after third day of immersion. This was possible owing to precipitation of protective hydroxyapatite (HA) layer, formed out of the interaction of SBF and the alloy. More nucleation sites at the grain boundary for fine grained samples help in forming more HA and thus reduce the corrosion rate. Human osteosarcoma cells show less viability and adhesion on grain refined alloy.


Assuntos
Implantes Absorvíveis , Ligas , Magnésio , Ortopedia , Linhagem Celular Tumoral , Corrosão , Humanos , Teste de Materiais , Osteossarcoma/patologia , Resistência à Tração
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