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1.
Clin Radiol ; 78(12): e1041-e1047, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37838545

RESUMO

AIM: To describe a UK-wide re-audit of the 2019 Royal College of Radiologists (RCR) audit evaluating patient-related data and organisational infrastructure in the radiological reporting of vertebral fragility fractures (VFFs) on computed tomography (CT) studies and to assess the impact of a series of RCR interventions, initiated to raise VFF awareness, on reporting practice and outcomes. MATERIALS AND METHODS: Patient specific and organisational questionnaires largely replicated those utilised in 2019. The patient questionnaire involved retrospective analysis of between 50 and 100 consecutive, non-traumatic CT studies which included the thoracolumbar spine. All RCR radiology audit leads were invited to participate. Data collection commenced from 1 April 2022. RESULTS: Data were supplied by 129/194 (67%) departments. One thousand five hundred and eighty-six of 7,316 patients (21.7%) had a VFF on auditor review. Overall improvements were demonstrated in key initial/provisional reporting results; comment on spine/bone (93.2%, 14.4% improvement, p<0.0002); fracture severity assessment (34.7%, 8.5% improvement, p=0.0007); use of recommended terminology (67.8%, 7.5% improvement, p=0.0034); recommendations for further management (11.7%, 9.1% improvement, p<0.0002). CONCLUSIONS: The 2022 national re-audit confirms improvements in diagnostic performance and practice in VFF reporting. Continuing work is required to build on this improvement and to further embed best practice.


Assuntos
Fraturas por Osteoporose , Radiologia , Fraturas da Coluna Vertebral , Humanos , Estudos Retrospectivos , Fraturas por Osteoporose/diagnóstico por imagem , Fraturas por Osteoporose/epidemiologia , Fraturas da Coluna Vertebral/diagnóstico por imagem , Fraturas da Coluna Vertebral/epidemiologia , Tomografia Computadorizada por Raios X , Reino Unido/epidemiologia
2.
Clin Radiol ; 78(1): 47-54, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36220736

RESUMO

AIM: To assess qualitative and quantitative magnetic resonance imaging (MRI) factors that can help distinguish leiomyosarcoma (LMS) from benign degenerative leiomyoma (BDL) and leiomyoma variants (LV) and assess the interobserver agreement for the proposed quantitative factors. MATERIALS AND METHODS: Retrospective analysis of all histopathology proven cases of LV, BDL, and LMS with a preoperative MRI was performed. Twenty-seven cases were included (five LMS, three LV, and 19 BDL) with each case independently read by a pair of radiologists. Lesion size, margins, presence or absence of degeneration, necrosis, and haemorrhage were assessed on MRI along with quantitative factors such as mean T2-weighted (W) and T1W signal intensity, T1W signal heterogeneity, diffusion-weighted imaging (DWI), and apparent diffusion coefficient (ADC) ratios as well as dynamic contrast enhancement (DCE) characteristics along with the presence or absence of lymphadenopathy and extra-uterine and peritoneal spread. Mean and standard deviation for quantitative variables and frequency with percentages for qualitative variables were assessed. RESULTS: Infiltrative margins were seen exclusively in the LMS group (n=1), with the remaining LMS cases showing lobulate or rounded smooth margins similar to BDL or LV. A high T2W signal <25% was seen exclusively in the BDL group (n=8). The presence of concomitant necrosis and haemorrhage was seen exclusively in the LMS group (n=2). Quantitative MRI had good inter-reader correlation but was not significantly different between the LMS, BDL, and LV groups. CONCLUSION: LMS, BDL, and LV may have overlapping features on multiparametric MRI making differentiation difficult.


Assuntos
Leiomioma , Leiomiossarcoma , Imageamento por Ressonância Magnética Multiparamétrica , Neoplasias Pélvicas , Neoplasias Uterinas , Feminino , Humanos , Leiomiossarcoma/diagnóstico por imagem , Leiomiossarcoma/patologia , Estudos Retrospectivos , Diagnóstico Diferencial , Leiomioma/diagnóstico por imagem , Leiomioma/patologia , Neoplasias Uterinas/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Imagem de Difusão por Ressonância Magnética , Necrose
3.
J Ethn Subst Abuse ; : 1-16, 2022 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-35635441

RESUMO

To date, research on refugee mental health has mainly focused on understanding the absence of psychopathology rather than on their well-being and associated positive aspects. The aim of this study was to examine the role of resilience, hope, belongingness, and social support in predicting satisfaction with life and flourishing among 361 minority Syrian refugees living in Iraq (age range = 18-60 years, mean = 32.57, SD = 10.05). Participants completed the Brief Resilience Scale, Adult Hope Scale, Multidimensional Scale of Perceived Social Support Scale, General Belongingness Scale, Satisfaction With Life Scale, and Flourishing Scale. Males reported significantly higher levels of resilience, belongingness, and flourishing compared to females. Demographic variables (age, gender, and economic level), resilience, hope, belongingness, and social support were correlated with life satisfaction and flourishing scores. While controlling for sociodemographic characteristics, resilience and hope were associated with life satisfaction and flourishing scores. However, belongingness and social support were only associated with flourishing scores. The findings suggest that equipping refugees with positive psychological resources could promote increased levels of life satisfaction and flourishing and thus enhance preventive psychosocial programs.

4.
Sultan Qaboos Univ Med J ; 22(1): 113-116, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35299816

RESUMO

Objectives: The recent drop in the mortality rates of emphysematous pyelonephritis, a serious medical condition, is attributable to renal percutaneous drainage (PCD) techniques that have also reduced the necessity for surgery. Since the difference in the objectives of the two specific techniques, i.e. PCD and percutaneous nephrostomy (PCN), is often overlooked, this study aimed to highlight the inconsistencies in the use of these two techniques. Methods: A retrospective study of 17 patients was conducted over a 10-year period from January 2008 to December 2017 at The Royal Hospital, Muscat, Oman. All patients had undergone abdominal computerised tomography. The obtained images were reviewed and categorised based on Huang and Tseng's classification. Results: From the sample, 13 patients (76%) were categorised as class I and II, three (17%) as class IIIA and one (6%) as class IIIB. Five patients from the class I and II categories underwent drainage of the pelvicalyceal system, four by PCN and one by a double-J stent insertion. PCN was performed on all the class IIIA and IIIB patients. One class IIIB patient required PCD for localised gas and fluid collection but later underwent emergency nephrectomy. There were no mortalities. Conclusion: The favourable outcome of this study was in keeping with those of the more recent studies. However, despite the present classifications and guidelines, wide variations were reported in the use of percutaneous drains with PCD, ranging from 2.5-91%. The lack of precise guidelines may be a cause of these disparities in clinical management.


Assuntos
Complicações do Diabetes , Enfisema , Pielonefrite , Drenagem/métodos , Enfisema/cirurgia , Humanos , Pielonefrite/epidemiologia , Estudos Retrospectivos
5.
West Indian med. j ; 69(5): 309-314, 2021. tab
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1515678

RESUMO

ABSTRACT Objective: Developing anti-cancer drugs from natural products is receiving increasing interest worldwide due to limitations and side effects of anti-cancer drugs. The purpose of this study was to explore the anti-proliferative or cytopathic potential of natural compounds derived from plant sources as alternatives of synthetic compounds on human embryonic kidney carcinoma (HEK) cell line. Methods: In this study, aqueous and methanolic extracts were obtained from various plants, viz, Thapsia garganica, Citrus sinesis, Citrus limon and Vinca rosea. Extracts were serially diluted into 96-well microtitre plates and were screened for anti-proliferative potential against the HEK cell line via the neutral red dye uptake assay. Results: The findings revealed that methanolic extracts of T. garganica leaf and V. rosea leaf were the most effective as anti-proliferative or cytotoxic against the HEK cell line, with IC50 at 32-fold dilution of the extract. Conclusion: The extracts of T. garganic and V, rosea have been used as anti-proliferative drugs but after trial in experimental animals for being not toxic.

6.
Dermatol Ther ; 32(5): e13036, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31361934

RESUMO

Keloid is characterized by benign overgrowth of dermal collagen in response to skin injury in genetically predisposed individuals. Intralesional triamcinolone and bleomycin have been used with varying success in the treatment of keloids. To compare the efficacy of intralesional triamcinolone versus intralesional bleomycin in the treatment keloids. A total of 164 patients were randomized into two of 82 each. Group A received intralesional bleomycine and Group B received intralesional triamcinolone. Patients were scored at baseline and at the end of treatment for therapeutic response based on reduction on patient and observer scar assessment scale (POSAS). Mean baseline POSAS score was 91 ± 10.98 SD check in Group A and 90 ± 10.85 SD in Group B. POSAS score after 24 weeks 26 SD ± 11.91 in Group and 34 ± 12.28 in Group B. This difference was statistically difference. Intralesional bleomycin is more efficacious than intralesional triamcinolone acetonide in the treatment of keloids.


Assuntos
Bleomicina/administração & dosagem , Queloide/tratamento farmacológico , Triancinolona Acetonida/administração & dosagem , Adulto , Antibióticos Antineoplásicos/administração & dosagem , Relação Dose-Resposta a Droga , Feminino , Seguimentos , Glucocorticoides/administração & dosagem , Humanos , Injeções Intralesionais , Queloide/diagnóstico , Masculino , Estudos Retrospectivos , Pele/patologia , Resultado do Tratamento
7.
Chem Soc Rev ; 47(11): 4073-4111, 2018 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-29611563

RESUMO

Post-transition elements, together with zinc-group metals and their alloys belong to an emerging class of materials with fascinating characteristics originating from their simultaneous metallic and liquid natures. These metals and alloys are characterised by having low melting points (i.e. between room temperature and 300 °C), making their liquid state accessible to practical applications in various fields of physical chemistry and synthesis. These materials can offer extraordinary capabilities in the synthesis of new materials, catalysis and can also enable novel applications including microfluidics, flexible electronics and drug delivery. However, surprisingly liquid metals have been somewhat neglected by the wider research community. In this review, we provide a comprehensive overview of the fundamentals underlying liquid metal research, including liquid metal synthesis, surface functionalisation and liquid metal enabled chemistry. Furthermore, we discuss phenomena that warrant further investigations in relevant fields and outline how liquid metals can contribute to exciting future applications.

8.
Chem Commun (Camb) ; 54(17): 2102-2105, 2018 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-29372725

RESUMO

The exfoliation of two dimensional (2D) oxides, established on the surface of specific liquid metals, has recently been introduced. One such liquid metal is molten tin, which forms a variety of surface 2D oxides. However, the development behaviour of these surface tin oxides is still unknown. Here the evolution of stoichiometry and thickness from single-layer SnO to highly oxidised multi-layer SnO2 in ambient oxygen is explored.

9.
Trop Biomed ; 35(3): 769-774, 2018 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-33601763

RESUMO

HIV-2 surveillance has been carried out in Malaysia for more than 25 years ago. Tests to discriminate HIV-1 and HIV-2 are available but the options of test are limited and the need to develop a new in-house HIV-2 real-time reverse transcription PCR (RT-PCR) is crucial. A study was done on 29 samples from hospitals in Malaysia which were found to be positive screening for HIV-2 antibodies by the commercial Western Blot assay. These samples were further tested by a Western Blot assay that detects specific antibodies to HIV-2. Detection of HIV-2 genome was then performed by using a commercial kit. Fifteen samples were evaluated by using in-house real-time RT-PCR for HIV-2. Ninety-three percent (27/29) of samples have positive results for HIV-2 on HIV-2 Western Blot with only 2 samples showing indeterminate results. All samples showed negative results for HIV-2 genomes by using a PCR commercial kit and the 15 samples that were subjected to our in-house real-time RT-HIV-2 PCR were also tested negative for HIV-2 RNA. Results of HIV-2 Western Blot did not reflect the actual positivity as both HIV-1 and HIV-2 antibodies may cross-react with either viral proteins. None of the samples was confirmed positive for HIV-2 by the commercial and in-house real-time RTPCR. In-house real-time RT-HIV-2 PCR assay can be further used to confirm the presence of HIV-2 genome. Up to the year 2015, Malaysia is still free from HIV-2 infection.

10.
Tropical Biomedicine ; : 769-774, 2018.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-750813

RESUMO

@#HIV-2 surveillance has been carried out in Malaysia for more than 25 years ago. Tests to discriminate HIV-1 and HIV-2 are available but the options of test are limited and the need to develop a new in-house HIV-2 real-time reverse transcription PCR (RT-PCR) is crucial. A study was done on 29 samples from hospitals in Malaysia which were found to be positive screening for HIV-2 antibodies by the commercial Western Blot assay. These samples were further tested by a Western Blot assay that detects specific antibodies to HIV-2. Detection of HIV-2 genome was then performed by using a commercial kit. Fifteen samples were evaluated by using in-house real-time RT-PCR for HIV-2. Ninety-three percent (27/29) of samples have positive results for HIV-2 on HIV-2 Western Blot with only 2 samples showing indeterminate results. All samples showed negative results for HIV-2 genomes by using a PCR commercial kit and the 15 samples that were subjected to our in-house real-time RT-HIV-2 PCR were also tested negative for HIV-2 RNA. Results of HIV-2 Western Blot did not reflect the actual positivity as both HIV-1 and HIV-2 antibodies may cross-react with either viral proteins. None of the samples was confirmed positive for HIV-2 by the commercial and in-house real-time RTPCR. In-house real-time RT-HIV-2 PCR assay can be further used to confirm the presence of HIV-2 genome. Up to the year 2015, Malaysia is still free from HIV-2 infection.

11.
Public Health Action ; 7(2): 141-146, 2017 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-28695088

RESUMO

Setting: Adult pulmonary tuberculosis (TB) patients unable to expectorate quality sputum represent a diagnostic challenge. A private hospital in Pakistan routinely performs gastric aspiration in adults with difficulties expectorating. Objective: To assess the usefulness of gastric specimens (GS) in diagnosing pulmonary TB (PTB) and drug-resistant TB in adult presumptive TB patients unable to expectorate, and to compare the diagnostic yield and sensitivity of smear, culture and the Xpert® MTB/RIF assay. Design: This was a comparative cross-sectional study based on retrospective record review. Results: Of 900, 885 and 877 GS tested by smear, Xpert and culture, respectively, interpretable results were obtained for respectively 900 (100%), 859 (97.1%) and 754 (86.0%), with a diagnostic yield of respectively 23.6%, 30.3% and 24.9%. The yield was significantly higher for Xpert in previously treated patients. There were 313 patients with definite TB, defined as positive on Xpert and/or culture. The 82.8% sensitivity of Xpert was significantly higher than that of smear (61.0%) and culture (67.8%). Conclusion: GS obtained by aspiration under routine programme conditions is useful for detecting TB and drug-resistant TB in adult patients unable to expectorate. Xpert, with its rapid testing, high proportion of interpretable results and better sensitivity, can substantially improve the diagnosis of bacteriologically confirmed TB and rifampicin resistance.


Contexte: Les patients adultes atteints de tuberculose pulmonaire (TB) incapables d'expectorer des crachats de qualité posent un problème en matière de diagnostic. Un hôpital privé du Pakistan réalise en routine l'aspiration gastrique chez les adultes qui ont du mal à expectorer.Objectif: Evaluer l'utilité des échantillons gastriques (GS) chez des patients adultes présumés atteints de TB incapables d'expectorer, pour le diagnostic de la TB pulmonaire et pharmacorésistante et pour comparer le rendement diagnostique et la sensibilité du frottis, de la culture et du test Xpert® MTB/RIF.Schéma: Etude comparative transversale basée sur une revue rétrospective des dossiers.Résultats: Un total de 900, 885 et 877 GA ont été testés respectivement par frottis, Xpert et culture et des résultats interprétables ont été obtenus chez 900 (100%), 859 (97,1%) et 754 (86,0%) patients avec un rendement diagnostique respectivement de 23,6%, 30,3% et 24,9%. Le rendement a été significativement plus élevé pour l'Xpert chez les patients déjà traités. Il y avait 313 patients avec une TB, définie comme la positivité de l'Xpert et/ou de la culture. La sensibilité de l'Xpert de 82,8% a été significativement plus élevée que le frottis (61,0%) et la culture (67,8%).Conclusion: Le GS aspiré sous des conditions de routine de programme est utile pour détecter la TB et la TB pharmacorésistante chez des patients adultes incapables d'expectorer. L'Xpert avec un test rapide, la proportion élevée de résultats interprétables et une meilleure sensibilité, peuvent substantiellement améliorer le diagnostic de la TB confirmée par bactériologie et la résistance à la rifampicine.


Marco de referencia: El diagnóstico de la tuberculosis (TB) pulmonar se dificulta en los pacientes adultos que no pueden suministrar muestras de esputo de buena calidad. En un hospital privado del Pakistán se practica de manera sistemática la aspiración gástrica en los adultos con dificultad para expectorar.Objetivo: Evaluar la utilidad del aspirado gástrico (GS) para el diagnóstico de la TB pulmonar farmacorresistente, en los pacientes con presunción de TB que tienen dificultad para expectorar y comparar el rendimiento diagnóstico y la sensibilidad de la baciloscopia, el cultivo y la prueba Xpert® MTB/RIF.Método: Un estudio transversal comparativo a partir del examen retrospectivo de las historias clínicas.Resultados: Se examinaron 900 muestras de GS mediante baciloscopia, 885 con la prueba Xpert y 877 por cultivo; se obtuvieron resultados interpretables en 900 (100%), 859 (97,1%) y 754 muestras (86,0%), con un rendimiento diagnóstico de 23,6%, 30,3% y 24,9%, respectivamente. El rendimiento fue significativamente superior con la prueba Xpert en los pacientes con antecedente de tratamiento. El diagnóstico definitivo de TB, definido como un resultado positivo de la prueba Xpert, el cultivo o ambos, se estableció en 313 pacientes. La prueba Xpert exhibió una sensibilidad de 82,8%, que fue significativamente más alta que la sensibilidad de la baciloscopia (61,0%) y la del cultivo (67,8%).Conclusión: El examen de las muestras de GS en el marco del programa corriente es útil para detectar la TB y la TB farmacorresistente en los pacientes adultos que no pueden expectorar. La prueba Xpert que ofrece un diagnóstico rápido, alta proporción de resultados interpretables y mejor sensibilidad puede mejorar notablemente el diagnóstico con confirmación bacteriológica de la TB y la resistencia a rifampicina.

12.
Int J Womens Dermatol ; 3(2): 71-76, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28560299

RESUMO

Acne vulgaris is one of the top three most commonly encountered dermatological problems worldwide in both primary and secondary care. Acne diagnosis and treatment date back to ancient Greek and Egyptian times. This article explores acne through the ages and discusses past theories on etiology and treatment with particular focus on the discovery of retinoids and their impact on women's health.

13.
J Antimicrob Chemother ; 71 Suppl 1: i103-9, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27048578

RESUMO

OBJECTIVES: To investigate changes in the antibiotic susceptibility of Streptococcus pneumoniae, Haemophilus influenzae and Streptococcus pyogenes from the Survey of Antibiotic Resistance (SOAR) in community-acquired respiratory tract infections (CA-RTIs) between 2002 and 2015 in Pakistan. METHODS: This is a review based on previously published studies from 2002-03, 2004-06 and 2007-09 and also new data from 2014-15. Susceptibility was determined by Etest(®) or disc diffusion according to CLSI and pharmacokinetic/pharmacodynamic (PK/PD) breakpoints. RESULTS: A total of 706 isolates from CA-RTIs comprising 381 S. pneumoniae, 230 H. influenzae and 95 S. pyogenes were collected between 2002 and 2015 and tested against a range of antibiotics. Antibiotic resistance in S. pneumoniae rose steeply from 2002 to 2009, with isolates non-susceptible to penicillin and macrolides increasing from 10% to 34.1% and from 13%-14% to 29.7%, respectively. Susceptibility to amoxicillin/clavulanic acid (and by inference amoxicillin) remained between 99.4% and 100% from 2002 to 2015. Over the years, the prevalence of susceptibility to cefuroxime was 98%-100% among S. pneumoniae. Resistance in S. pneumoniae to some older antibiotics between 2007 and 2009 was high (86.8% for trimethoprim/sulfamethoxazole and 57.2% for tetracycline). Between 2002 and 2015, ampicillin resistance (ß-lactamase-positive strains) among H. influenzae has remained low (between 2.6% and 3.2%) and almost unchanged over the years (H. influenzae was not tested during 2004-06). For S. pyogenes isolates, macrolide resistance reached 22%; however, susceptibility to penicillin, amoxicillin/clavulanic acid and cefuroxime remained stable at 100%. CONCLUSIONS: In S. pneumoniae from Pakistan, there has been a clear reduction in susceptibility to key antibiotics since 2002, but not to amoxicillin/clavulanic acid (amoxicillin) or cefuroxime. However, susceptibility in H. influenzae has remained stable. Local antibiotic susceptibility/resistance data are essential to support informed prescribing for CA-RTIs and other infections.


Assuntos
Antibacterianos/farmacologia , Farmacorresistência Bacteriana , Haemophilus influenzae/efeitos dos fármacos , Streptococcus pneumoniae/efeitos dos fármacos , Streptococcus pyogenes/efeitos dos fármacos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Infecções Comunitárias Adquiridas/epidemiologia , Infecções Comunitárias Adquiridas/microbiologia , Feminino , Infecções por Haemophilus/epidemiologia , Infecções por Haemophilus/microbiologia , Haemophilus influenzae/isolamento & purificação , Humanos , Lactente , Recém-Nascido , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Paquistão/epidemiologia , Infecções Pneumocócicas/epidemiologia , Infecções Pneumocócicas/microbiologia , Infecções Respiratórias/epidemiologia , Infecções Respiratórias/microbiologia , Infecções Estreptocócicas/epidemiologia , Infecções Estreptocócicas/microbiologia , Streptococcus pneumoniae/isolamento & purificação , Streptococcus pyogenes/isolamento & purificação , Adulto Jovem
14.
J Environ Manage ; 166: 109-15, 2016 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-26496840

RESUMO

Selecting a suitable Multi Criteria Decision Making (MCDM) method is a crucial stage to establish a Solid Waste Management (SWM) system. Main objective of the current study is to demonstrate and evaluate a proposed method using Multiple Criteria Decision Making methods (MCDM). An improved version of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) applied to obtain the best municipal solid waste management method by comparing and ranking the scenarios. Applying this method in order to rank treatment methods is introduced as one contribution of the study. Besides, Viekriterijumsko Kompromisno Rangiranje (VIKOR) compromise solution method applied for sensitivity analyses. The proposed method can assist urban decision makers in prioritizing and selecting an optimized Municipal Solid Waste (MSW) treatment system. Besides, a logical and systematic scientific method was proposed to guide an appropriate decision-making. A modified TOPSIS methodology as a superior to existing methods for first time was applied for MSW problems. Applying this method in order to rank treatment methods is introduced as one contribution of the study. Next, 11 scenarios of MSW treatment methods are defined and compared environmentally and economically based on the waste management conditions. Results show that integrating a sanitary landfill (18.1%), RDF (3.1%), composting (2%), anaerobic digestion (40.4%), and recycling (36.4%) was an optimized model of integrated waste management. An applied decision-making structure provides the opportunity for optimum decision-making. Therefore, the mix of recycling and anaerobic digestion and a sanitary landfill with Electricity Production (EP) are the preferred options for MSW management.


Assuntos
Técnicas de Apoio para a Decisão , Modelos Teóricos , Eliminação de Resíduos/métodos , Resíduos Sólidos/análise , Tomada de Decisões , Malásia , Reciclagem , Instalações de Eliminação de Resíduos , Gerenciamento de Resíduos/métodos
15.
BMJ Case Rep ; 20152015 Dec 21.
Artigo em Inglês | MEDLINE | ID: mdl-26689254

RESUMO

Bowel obstruction due to bezoars (compaction of ingested material within the gastrointestinal tract) is a rare, but well documented occurrence. In this paper, we present two cases of potato-induced small bowel obstruction. Both patients were approximately 50 years old and had cerebral palsy and learning disabilities, respectively. They presented with abdominal pain and bilious vomiting, with no medical or surgical history. Diagnosis of small bowel obstruction was confirmed by CT prior to taking the patients to the operating theatre, where whole potatoes were found to be obstructing each patient's bowel lumen. Both patients underwent laparotomy with enterotomy and removal of the potato. They both made a good recovery. Through a literature review of bezoar-induced bowel obstruction, these cases highlight important diagnostic and management principles.


Assuntos
Bezoares/complicações , Obstrução Intestinal/etiologia , Solanum tuberosum , Bezoares/cirurgia , Paralisia Cerebral/complicações , Feminino , Humanos , Obstrução Intestinal/cirurgia , Intestino Delgado/cirurgia , Laparotomia , Deficiências da Aprendizagem/complicações , Pessoa de Meia-Idade
16.
Cancer Gene Ther ; 22(5): 246-61, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25837663

RESUMO

This study was aimed at finding out mutations of an anticancerous, antiviral and immunomodulatory gene (human interferon alpha-2b) in low- and high-grade brain tumor patients and correlate from hematological profiles. A molecular analysis was performed in which DNAs were extracted from brain biopsy samples of brain tumor patients. The gene was amplified through the PCR technique, and genetic data from sequencing were analyzed by bioinformatics to determine how mutations will lead to changes in human interferon alpha 2b protein in patients. A total of 38% gene mutations were identified among brain tumor patients. The highest percentage of (36%) frameshift mutations was identified. Hematological analysis shows modulations in the 'lymphocytes' parameter in a majority (64%) of the brain tumor patients. Environmental factors have been reported as risks of brain cancer. Patients were found to be under environmental stress from contaminated drinking water and from local gamma radiations. Brain tumor patients were found to have various mutations in an immunomodulating human interferon alpha-2b gene. These patients had immunosuppression that was further affirmed from their hematological profiles. This analysis may be helpful to develop certain biomarkers that may be used to develop novel immunotherapeutical drugs, which enhance a better immune response.


Assuntos
Neoplasias Encefálicas/genética , Interação Gene-Ambiente , Interferon-alfa/genética , Mutação , Animais , Exposição Ambiental , Humanos , Incidência , Interferon alfa-2 , Proteínas Recombinantes/genética , Fatores de Risco
17.
Pharm Biol ; 52(12): 1598-623, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25068675

RESUMO

CONTEXT: Different parts of Muntingia calabura L. (Elaeocarpaceae), or "kerukup siam" in Malay, have been reported to possess medicinal value, supported by a number of scientific studies. OBJECTIVE: To gather all information related to the ethnomedicinal uses, phytochemical compositions, and pharmacological activities of M. calabura and present them as a comprehensive and systematic review article. MATERIALS AND METHODS: Literature has been retrieved from a number of databases (e.g., Pubmed, Science Direct, Springer Link, etc.). General web searches were also carried out using Google and Yahoo search engines by applying some related search terms (e.g., Muntingia calabura, phytochemical, pharmacological, extract, and traditional uses). The articles related to agriculture, ecology, and synthetic work and those using languages other than English or Malay have been excluded. The bibliographies of papers relating to the review subject were also searched for further relevant references. RESULTS AND DISCUSSION: The literature search conducted using the above-mentioned Internet search engines only lead to the identification of 36 journals published as early as 1987. From the articles reviewed, M. calabura possessed various pharmacological activities (e.g., cytotoxic, antinociceptive, antiulcer, anti-inflammatory), which supported the folklore claims and could be attributed to its phytoconstituents. CONCLUSION: Muntingia calabura possesses remarkable medicinal value, which warrants further and in-depth studies. Therefore, this review paper is presented to help guide researchers to plan their future studies related to this plant in the hope of isolating potential leads for future drug development.


Assuntos
Elaeocarpaceae/química , Medicina Tradicional , Extratos Vegetais/farmacologia , Animais , Humanos , Compostos Fitoquímicos/isolamento & purificação , Compostos Fitoquímicos/farmacologia
18.
Biomed Res Int ; 2014: 695678, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24868543

RESUMO

Muntingia calabura L. is a tropical plant species that belongs to the Elaeocarpaceae family. The present study is aimed at determining the hepatoprotective activity of methanol extract of M. calabura leaves (MEMC) using two models of liver injury in rats. Rats were divided into five groups (n=6) and received 10% DMSO (negative control), 50 mg/kg N-acetylcysteine (NAC; positive control), or MEMC (50, 250, and 500 mg/kg) orally once daily for 7 days and on the 8th day were subjected to the hepatotoxic induction using paracetamol (PCM). The blood and liver tissues were collected and subjected to biochemical and microscopical analysis. The extract was also subjected to antioxidant study using the 2,2-diphenyl-1-picrylhydrazyl-(DPPH) and superoxide anion-radical scavenging assays. At the same time, oxygen radical antioxidant capacity (ORAC) and total phenolic content were also determined. From the histological observation, lymphocyte infiltration and marked necrosis were observed in PCM-treated groups (negative control), whereas maintenance of hepatic structure was observed in group pretreated with N-acetylcysteine and MEMC. Hepatotoxic rats pretreated with NAC or MEMC exhibited significant decrease (P<0.05) in ALT and AST enzymes level. Moreover, the extract also exhibited good antioxidant activity. In conclusion, MEMC exerts potential hepatoprotective activity that could be partly attributed to its antioxidant activity and, thus warrants further investigations.


Assuntos
Acetaminofen/toxicidade , Falência Hepática/tratamento farmacológico , Fígado/efeitos dos fármacos , Extratos Vegetais/uso terapêutico , Sasa/química , Proteínas Quinases Ativadas por AMP/metabolismo , Transporte Ativo do Núcleo Celular , Animais , Núcleo Celular/metabolismo , Dinoprostona/metabolismo , Regulação para Baixo , Humanos , Imuno-Histoquímica , Inflamação , Interleucina-6/metabolismo , Lipopolissacarídeos/metabolismo , Falência Hepática/induzido quimicamente , Metanol , Camundongos , Microglia/metabolismo , NF-kappa B/metabolismo , Óxido Nítrico/metabolismo , Folhas de Planta/química , Ratos , Fator de Necrose Tumoral alfa/metabolismo
19.
Hum Reprod ; 29(5): 1025-34, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24626804

RESUMO

STUDY QUESTION: Is recurrent pregnancy loss (RPL) associated with polymorphisms in the promoter and intron regions of the interleukin-10 (IL-10) gene? SUMMARY ANSWER: IL-10 rs1518111 was found to be associated with RPL but the commonly studied promoter variants rs1800872, rs1800871 and 1800896 were not. WHAT IS KNOWN ALREADY: Reduced expression of IL-10 is implicated in RPL, due to defective maternal immune tolerance (causing early miscarriages) or placental vascular insufficiency (causing late losses). IL-10 production is in part inherited, and IL-10 gene variants associated with reduced IL-10 expression have been analyzed for their association with RPL, often with inconclusive results. STUDY DESIGN, SIZE, DURATION: A retrospective case-control study was performed between January 2011 and April 2012. The subjects comprised 296 RPL cases and 305 control women. PARTICIPANTS/MATERIALS, SETTING, METHODS: Genotyping of the IL-10 intron (rs1878672, rs3024492, rs1554286, rs1518111, rs3024491, rs3024490) and promoter (rs1800872, rs1800871, rs1800896) variants was done by real-time PCR, with defined clusters. MAIN RESULTS AND THE ROLE OF CHANCE: A higher minor allele frequency (MAF) of rs1518111 (P = 0.03) was in seen RPL cases; but the MAFs of the remaining SNPs were comparable between cases and controls. Setting the homozygous major allele genotype (1/1) as the reference, significantly higher frequencies of heterozygous rs1554286 and rs1800872, and homozygous rs1800896 genotype carriers, and a reduced frequency of homozygous rs1518111 genotype carriers, were seen in RPL cases, while the distribution of the remaining genotypes were comparable between cases and controls. Serum IL-10 levels were significantly reduced in RPL cases compared with control women (P = 0.002), and this correlated with rs1518111 and rs1800871 genotypes in both groups, and with the rs1800872 genotype among control women. A nine-locus (rs1878672, rs3024492, rs1554286, rs1518111, rs3024491, rs3024490, rs1800872, rs1800871 and rs1800896) haploview analysis demonstrated an increased frequency of haplotype 112112121 in RPL cases, thus conferring a disease susceptibility nature to this haplotype. LIMITATIONS, REASONS FOR CAUTION: The main limitation of this study was that it was limited to Bahraini Arabs, thereby necessitating parallel studies of other ethnic groups. Another limitation is the study design, which prompts speculation on whether it is a cause-effect relationship. WIDER IMPLICATIONS OF THE FINDINGS: While the lack of association of the various IL-10 promoter variants with RPL was in agreement with reports from varied ethnic groups, this is the first study to confirm the association between IL-10 rs151811 intronic variant and RPL. STUDY FUNDING/COMPETING INTEREST(S): The study was funded by grants from the Arabian Gulf University Research Fund. None of the authors report any competing interests.


Assuntos
Aborto Habitual/genética , Interleucina-10/genética , Íntrons , Polimorfismo de Nucleotídeo Único , Regiões Promotoras Genéticas , Adulto , Alelos , Estudos de Casos e Controles , Feminino , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Haplótipos , Humanos , Interleucina-10/metabolismo , Gravidez , Estudos Retrospectivos
20.
Artigo em Inglês | MEDLINE | ID: mdl-23853662

RESUMO

In an attempt to further establish the pharmacological properties of Bauhinia purpurea (Fabaceae), hepatoprotective potential of methanol extract of B. purpurea leaves (MEBP) was investigated using the paracetamol- (PCM-) induced liver toxicity in rats. Five groups of rats (n = 6) were used and administered orally once daily with 10% DMSO (negative control), 200 mg/kg silymarin (positive control), or MEBP (50, 250, and 500 mg/kg) for 7 days, followed by the hepatotoxicity induction using paracetamol (PCM). The blood samples and livers were collected and subjected to biochemical and microscopical analysis. The extract was also subjected to antioxidant study using the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay with the total phenolic content (TPC) also determined. From the histological observation, lymphocyte infiltration and marked necrosis were observed in PCM-treated groups (negative control), whereas maintenance of the normal hepatic structural was observed in group pretreated with silymarin and MEBP. Hepatotoxic rats pretreated with silymarin or MEBP exhibited significant decrease (P < 0.05) in ALT and AST enzyme level. Moreover, the extract also exhibited antioxidant activity and contained high TPC. In conclusion, MEBP exerts potential hepatoprotective activity that could be partly attributed to its antioxidant activity and high phenolic content and thus warrants further investigation.

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