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1.
Int J Gen Med ; 17: 1823-1831, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38711827

RESUMO

Purpose: Systemic Sclerosis (SSc) is a rare connective tissue disorder characterized by autoimmunity, fibrosis, and vasculopathy that affects the skin and internal organs, including the gastrointestinal tract, particularly the esophagus. This article highlights the characteristics and clinical symptoms of esophageal involvement in patients with SSc. Patients and Methods: This study was conducted between November 2022 to August 2023, including 26 already diagnosed cases of SSc in the Department of Rheumatology and Rehabilitation and Kurdistan Center for Gastroenterology and Hepatology-Sulaymaniyah, Iraq. Esophageal involvement was investigated using esophageal manometry, esophagogastroduodenoscopy (EGD), and 24-hour impedance-pH monitoring. Results: Females were significantly predominant (P = 0.019) regarding the symptoms; 76.9% of the patients had heart burn, 76.9% dysphagia, 73.1% water brush, and 69.2% regurgitation. In total, 69.2% of the patients showed erosive gastrointestinal reflux disease (GERD) on EGD, 76.9% had decreased lower esophageal sphincter pressure (DLESP) and decreased distal esophageal peristaltic contractions (DDEPC) on esophageal manometry, and 84.6% had reflux on pH monitoring. Raynaud's phenomenon is the most common and typically the earliest clinical manifestation of SSc. The presence of erosive GERD was found to significantly increase the risk of developing dysphagia (B = 4.725, P = 0.014, OR = 3.482) and regurgitation (B = 3.521, P = 0.006, OR = 4.030). Conclusion: It is crucial to take gender-specific considerations into account when diagnosing and managing esophageal complications in patients with systemic sclerosis (SSc). Additionally, employing various diagnostic assessments to detect esophageal involvement during SSc is essential. Erosive GERD has been identified as a risk factor that contributes to the development of dysphagia and regurgitation in individuals with SSc.

2.
Pediatr Surg Int ; 40(1): 37, 2024 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-38252165

RESUMO

BACKGROUND: Surgical management of Hirschsprung disease (HD) in low- and middle-income countries is typically a staged procedure, necessitating multiple hospitalizations and clinic visits increasing family financial burden. Currently, there is limited information on the costs borne by caretakers of children with Hirschsprung disease seeking surgical intervention. This study seeks to measure the costs and economic burden of surgical treatment for Hirschsprung disease in western Uganda. METHODS: A cross-sectional study using cost analysis was conducted among caretakers of patients who completed surgical treatment of HD between January 2017 and December 2021 at two hospitals in western Uganda. The average direct and indirect costs incurred by caretakers presenting at a public and private hospital were computed. RESULTS: A total of 69 patients (M: F = 7:1) were enrolled in the study. The median age at diagnosis was 60.5 (IQR 3-151.25) days for children and two-staged pull-through procedure was the common surgery performed. The mean overall cost for treatment was US $960 (SD = $720), with the majority of costs coming from direct medical costs. Nearly half (48%) of participants resorted to distress financing to finance their child's surgical care. The overwhelming majority of patients (n = 64, 93%) incurred catastrophic expenditure from the total costs of surgery for HD, and 97% of participants fell below the international poverty line at the time treatment was completed. CONCLUSION: Despite the availability of 'free care' from government hospital and non-profit services, this study found that surgical management of Hirschsprung disease imposed substantial cost burden on families with Hirschsprung disease patients.


Assuntos
Capacidades de Enfrentamento , Doença de Hirschsprung , Criança , Humanos , Estudos Transversais , Doença de Hirschsprung/cirurgia , Uganda , Custos e Análise de Custo
3.
J Clin Lab Anal ; 37(15-16): e24959, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37650531

RESUMO

One of the most tragic events in recent history was the COVID-19 outbreak, which has caused thousands of deaths. A variety of drugs were prescribed to improve the condition of patients, including antiparasitic, antiviral, antibiotics, and anti-inflammatory medicines. It must be understood, however, that COVID-19 is like a tip of an iceberg on the ocean, and the consequences of overuse of antibiotics are like the body of a mountain under water whose greatness has not yet been determined for humanity, and additional study is needed to understand them. History of the war between microbes and antimicrobial agents has shown that microbes are intelligent organisms that win over antimicrobial agents over time through many acquired or inherent mechanisms. The key terms containing "COVID-19," "Severe acute respiratory syndrome coronavirus-2," "SARS-CoV2," "Antibiotic Resistance," "Coronavirus," "Pandemic," "Antibiotics," and "Antimicrobial Resistance" were used for searching in PubMed, Scopus, and Google Scholar databases. The COVID-19 pandemic has resulted in an increased prescription of antibiotics. Infections caused by secondary or co-bacterial infections or beneficial bacteria in the body can be increased as a result of this amount of antibiotic prescription and exposure to antibiotics. Antibiotic resistance will likely pose a major problem in the future, especially for last resort antibiotics. In order to address the antibiotic resistance crisis, it is imperative that researchers, farmers, veterinarians, physicians, public and policymakers, pharmacists, other health and environmental professionals, and others collaborate during and beyond this pandemic.

4.
Arch Razi Inst ; 78(2): 715-720, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-37396721

RESUMO

Type 2 severe acute respiratory syndrome caused by coronavirus infection has become the most well-known pandemic infectious viral disease in the present century. This study aims to find out the post-COVID-19 infection complications via a well-designed observational study. A total of 986 recovered cases (only the period ranged between 2 to 3 months after recovery) were obtained from public and private hospitals in Kirkuk and Erbil governorates\Iraq. The admitted patients were asked to answer a questionnaire through interviews; the laboratory findings were obtained from the patients. The results suggested that approximately half of post-COVID-19 patients (%45.606) were suffering from chest pain, while (%32.357) of the cases suffered headache and chest pain. Liver enzymes (ALT, AST, and ALP) showed abnormal percent values of 38.6,24.07, and 26.09, respectively. Renal function enzymes, mainly urea, were found to be abnormal in 45.37% of recovered individuals. Furthermore, abnormal LDH levels were found in (77.9%) of post-COVID-19 patients. This finding revealed that chest pain was an inflammatory condition and liver and renal enzyme disturbances, while elevation in LDH was the predominant long-term complication in post-COVID-19 patients.


Assuntos
COVID-19 , Humanos , Estudos de Coortes , SARS-CoV-2 , Fígado , Dor no Peito
5.
Phys Med Biol ; 68(2)2023 01 09.
Artigo em Inglês | MEDLINE | ID: mdl-36625355

RESUMO

Objective.Carbon is an ion species of significant radiobiological interest, particularly in view of its use in cancer radiotherapy, where its large Relative Biological Efficiency is often exploited to overcome radio resistance. A growing interest in highly pulsed carbon delivery has arisen in the context of the development of the FLASH radiotherapy approach, with recent studies carried out at dose rates of 40 Gy s-1. Laser acceleration methods, producing ultrashort ion bursts, can now enable the delivery of Gy-level doses of carbon ions at ultra-high dose rates (UHDRs), exceeding 109Gy s-1. While studies at such extreme dose rate have been carried out so far using low LET particles such as electrons and protons, the radiobiology of high-LET, UHDR ions has not yet been explored. Here, we report the first application of laser-accelerated carbon ions generated by focussing 1020W cm-2intense lasers on 10-25 nm carbon targets, to irradiate radioresistant patient-derived Glioblastoma stem like cells (GSCs).Approach.We exposed GSCs to 1 Gy of 9.5 ± 0.5 MeV/n carbon ions delivered in a single ultra-short (∼400-picosecond) pulse, at a dose rate of 2 × 109Gy s-1, generated using the ASTRA GEMINI laser of the Central Laser Facility at the Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK. We quantified carbon ion-induced DNA double strand break (DSB) damage using the 53BP1 foci formation assay and used 225 kVp x-rays as a reference radiation.Main Results.Laser-accelerated carbon ions induced complex DNA DSB damage, as seen through persistent 53BP1 foci (11.5 ± 0.4 foci/cell/Gy) at 24 h and significantly larger foci (1.69 ± 0.07µm2) than x-rays induced ones (0.63 ± 0.02µm2). The relative foci induction value for laser-driven carbon ions relative to conventional x-rays was 3.2 ± 0.3 at 24 h post-irradiation also confirming the complex nature of the induced damage.Significance.Our study demonstrates the feasibility of radiobiology investigations at unprecedented dose rates using laser-accelerated high-LET carbon ions in clinically relevant models.


Assuntos
Quebras de DNA de Cadeia Dupla , Prótons , Humanos , Células Cultivadas , Íons , DNA , Lasers , Carbono/uso terapêutico
6.
Radiat Oncol ; 17(1): 77, 2022 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-35428301

RESUMO

BACKGROUND: There is currently significant interest in assessing the role of oxygen in the radiobiological effects at ultra-high dose rates. Oxygen modulation is postulated to play a role in the enhanced sparing effect observed in FLASH radiotherapy, where particles are delivered at 40-1000 Gy/s. Furthermore, the development of laser-driven accelerators now enables radiobiology experiments in extreme regimes where dose rates can exceed 109 Gy/s, and predicted oxygen depletion effects on cellular response can be tested. Access to appropriate experimental enviroments, allowing measurements under controlled oxygenation conditions, is a key requirement for these studies. We report on the development and application of a bespoke portable hypoxia chamber specifically designed for experiments employing laser-driven sources, but also suitable for comparator studies under FLASH and conventional irradiation conditions. MATERIALS AND METHODS: We used oxygen concentration measurements to test the induction of hypoxia and the maintenance capacity of the chambers. Cellular hypoxia induction was verified using hypoxia inducible factor-1α immunostaining. Calibrated radiochromic films and GEANT-4 simulations verified the dosimetry variations inside and outside the chambers. We irradiated hypoxic human skin fibroblasts (AG01522B) cells with laser-driven protons, conventional protons and reference 225 kVp X-rays to quantify DNA DSB damage and repair under hypoxia. We further measured the oxygen enhancement ratio for cell survival after X-ray exposure in normal fibroblast and radioresistant patient- derived GBM stem cells. RESULTS: Oxygen measurements showed that our chambers maintained a radiobiological hypoxic environment for at least 45 min and pathological hypoxia for up to 24 h after disconnecting the chambers from the gas supply. We observed a significant reduction in the 53BP1 foci induced by laser-driven protons, conventional protons and X-rays in the hypoxic cells compared to normoxic cells at 30 min post-irradiation. Under hypoxic irradiations, the Laser-driven protons induced significant residual DNA DSB damage in hypoxic AG01522B cells compared to the conventional dose rate protons suggesting an important impact of these extremely high dose-rate exposures. We obtained an oxygen enhancement ratio (OER) of 2.1 ± 0.1 and 2.5 ± 0.1 respectively for the AG01522B and patient-derived GBM stem cells for X-ray irradiation using our hypoxia chambers. CONCLUSION: We demonstrated the design and application of portable hypoxia chambers for studying cellular radiobiological endpoints after exposure to laser-driven protons at ultra-high dose, conventional protons and X-rays. Suitable levels of reduced oxygen concentration could be maintained in the absence of external gassing to quantify hypoxic effects. The data obtained provided indication of an enhanced residual DNA DSB damage under hypoxic conditions at ultra-high dose rate compared to the conventional protons or X-rays.


Assuntos
Prótons , Radiobiologia , DNA/efeitos da radiação , Humanos , Hipóxia , Lasers , Oxigênio
7.
Infect Disord Drug Targets ; 22(4): e200122200389, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35048811

RESUMO

BACKGROUND: The association between human papillomavirus (HPV) and human breast cancer (BC) has already been thoroughly studied worldwide with contradictory findings. Although the researchers have tried to minimize the conflict using statistical meta-analysis because of its shortcomings, there is still a need to evaluate the correlation between HPV and BC using any additional method. OBJECTIVES: This study was launched to investigate the correlation between HPV and BC through the application of Bradford Hill criteria postulates. METHODS: Population-wide studies associating HPV with BC were searched using the PubMed database. Then, the information of HPV burden in BC, normal/benign samples was analyzed, and ultimately Bradford Hill criteria postulates were applied on the collected evidence to explore the relationship between HPV and BC. In addition, to make the outcomes more authentic, we also reviewed the methodologies of previous studies to address the propensity of false results. RESULTS: After a careful evaluation of the obtained data against major Bradford Hill criteria postulates, it was noted that all these postulates, including strength, consistency, biological gradient, temporality, plausibility, experiment, specificity, and analogy were not fulfilled. CONCLUSION: The results of the present study have failed to establish a causal association between HPV and BC, but they did suggest HPV as a cause-effective agent or at least a co-participant in the pathogenesis of BC. Because of the weakness of association, particularly the lack of consistency between studies and the lack of effect specificity, more research into Bradford Hill criteria postulates is required.


Assuntos
Neoplasias da Mama , Infecções por Papillomavirus , Neoplasias da Mama/epidemiologia , Causalidade , Feminino , Humanos , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia
8.
IEEE Trans Pattern Anal Mach Intell ; 44(12): 9217-9220, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-34665721

RESUMO

Neuroimaging experiments in general, and EEG experiments in particular, must take care to avoid confounds. A recent TPAMI paper uses data that suffers from a serious previously reported confound. We demonstrate that their new model and analysis methods do not remedy this confound, and therefore that their claims of high accuracy and neuroscience relevance are invalid.


Assuntos
Algoritmos , Mapeamento Encefálico , Mapeamento Encefálico/métodos , Encéfalo/diagnóstico por imagem , Neuroimagem , Aprendizagem , Eletroencefalografia/métodos
9.
Biosci Rep ; 42(1)2022 01 28.
Artigo em Inglês | MEDLINE | ID: mdl-34908119

RESUMO

BACKGROUND: Defects in methylenetetrahydrofolate dehydrogenase 1-like (MTHFD1L) expression have earlier been examined in only a few human cancers. OBJECTIVES: Multi-omics profiling of MTHFD1L as a shared biomarker in distinct subtypes of human cancers. METHODS: In the current study, for the multi-omics analysis of MTHFD1L in 24 major subtypes of human cancers, a comprehensive in silico approach was adopted to mine different open access online databases including UALCAN, Kaplan-Meier (KM) plotter, LOGpc, GEPIA, Human Protein Atlas (HPA), Gene Expression across Normal and Tumor tissue (GENT2), MEXPRESS, cBioportal, STRING, DAVID, TIMER, and Comparative Toxicogenomics Database (CTD). RESULTS: We noticed that the expression of MTHFD1L was significantly higher in all the analyzed 24 subtypes of human cancers as compared with the normal controls. Moreover, MTHDF1L overexpression was also found to be significantly associated with the reduced overall survival (OS) duration of Bladder urothelial cancer (BLCA), Head and neck cancer (HNSC), Kidney renal papillary cell carcinoma (KIRP), Lung adenocarcinoma (LUAD), and Uterine corpus endometrial carcinoma (UCEC). This implies that MTHFD1L plays a significant role in the development and progression of these cancers. We further noticed that MTHFD1L was also overexpressed in BLCA, HNSC, KIRP, LUAD, and UCEC patients of different clinicopathological features. Pathways enrichment analysis revealed the involvement of MTHFD1L-associated genes in five diverse pathways. We also explored few interesting correlations between MTHFD1L expression and its promoter methylation, genetic alterations, CNVs, and between CD8+ T immune cells level. CONCLUSION: In conclusion, our results elucidated that MTHFD1L can serve as a shared diagnostic and prognostic biomarker in BLCA, HNSC, KIRP, LUAD, and UCEC patients of different clinicopathological features.


Assuntos
Aminoidrolases/genética , Biomarcadores Tumorais/genética , Formiato-Tetra-Hidrofolato Ligase/genética , Metilenotetra-Hidrofolato Desidrogenase (NADP)/genética , Complexos Multienzimáticos/genética , Neoplasias/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais/análise , Bases de Dados Genéticas , Feminino , Regulação Neoplásica da Expressão Gênica , Redes Reguladoras de Genes , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/enzimologia , Neoplasias/mortalidade , Neoplasias/patologia , Valor Preditivo dos Testes , Prognóstico , Mapas de Interação de Proteínas , Transdução de Sinais , Regulação para Cima , Adulto Jovem
10.
Int J Gen Med ; 14: 7025-7042, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34707394

RESUMO

INTRODUCTION: Cancer is one of the most common malignancies and the leading cause of death worldwide. As a member of the transmembrane emp24 domain (Tmed)/p24 family of proteins, TMED2 expression variations have been documented earlier in only a few subtypes of human cancers, and the multi-omics profiling of TMED2 as a shared biomarker in different other subtypes of human cancers remains to be uncovered. METHODS: In the current study, TMED2 multi-omics analysis in 24 major subtypes of human cancer was performed using different authentic online databases and bioinformatics analysis including UALCAN, Kaplan-Meier (KM) plotter, Human Protein Atlas (HPA), GENT2, MEXPRESS, cBioportal, STRING, DAVID, TIMER, and CTD. RESULTS: In general, the TMED2 expression in 24 major subtypes of human cancers was higher relative to normal controls and was also strongly associated with the lower overall survival (OS) and relapse-free survival (RFS) duration of CESC, ESCA, HNSC, KIRC, LIHC, and LUAD patients. This implies that TMED2 plays a significant role in the development and progression of these cancers. Furthermore, the TMED2 overexpression was also correlated with different clinicopathological features of CESC, ESCA, HNSC, KIRC, LIHC, and LUAD patients. TMED2-associated genes network was involved in 3 diverse pathways, and finally, few stronger correlations were also explored between TMED2 expression and its promoter methylation level, genetic alterations, and CD8+ T immune cells level. CONCLUSION: In conclusion, via this in silico study, we have elucidated that TMED2 can serve as a shared diagnostic and prognostic biomarker in CESC, ESCA, HNSC, KIRC, LIHC, and LUAD patients of different clinicopathological features but, further in vitro and in vivo research should be carried out to confirm these findings.

11.
Sci Rep ; 11(1): 699, 2021 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-33436708

RESUMO

Developing compact ion accelerators using intense lasers is a very active area of research, motivated by a strong applicative potential in science, industry and healthcare. However, proposed applications in medical therapy, as well as in nuclear and particle physics demand a strict control of ion energy, as well as of the angular and spectral distribution of ion beam, beyond the intrinsic limitations of the several acceleration mechanisms explored so far. Here we report on the production of highly collimated ([Formula: see text] half angle divergence), high-charge (10s of pC) and quasi-monoenergetic proton beams up to [Formula: see text] 50 MeV, using a recently developed method based on helical coil targetry. In this concept, ions accelerated from a laser-irradiated foil are post-accelerated and conditioned in a helical structure positioned at the rear of the foil. The pencil beam of protons was produced by guided post-acceleration at a rate of [Formula: see text] 2 GeV/m, without sacrificing the excellent beam emittance of the laser-driven proton beams. 3D particle tracing simulations indicate the possibility of sustaining high acceleration gradients over extended helical coil lengths, thus maximising the gain from such miniature accelerating modules.

12.
Artigo em Inglês | MEDLINE | ID: mdl-33211652

RESUMO

A recent paper [31] claims to classify brain processing evoked in subjects watching ImageNet stimuli as measured with EEG and to employ a representation derived from this processing to construct a novel object classifier. That paper, together with a series of subsequent papers [11, 18, 20, 24, 25, 30, 34], claims to achieve successful results on a wide variety of computer-vision tasks, including object classification, transfer learning, and generation of images depicting human perception and thought using brain-derived representations measured through EEG. Our novel experiments and analyses demonstrate that their results crucially depend on the block design that they employ, where all stimuli of a given class are presented together, and fail with a rapid-event design, where stimuli of different classes are randomly intermixed. The block design leads to classification of arbitrary brain states based on block-level temporal correlations that are known to exist in all EEG data, rather than stimulus-related activity. Because every trial in their test sets comes from the same block as many trials in the corresponding training sets, their block design thus leads to classifying arbitrary temporal artifacts of the data instead of stimulus-related activity. This invalidates all subsequent analyses performed on this data in multiple published papers and calls into question all of the reported results. We further show that a novel object classifier constructed with a random codebook performs as well as or better than a novel object classifier constructed with the representation extracted from EEG data, suggesting that the performance of their classifier constructed with a representation extracted from EEG data does not benefit from the brain-derived representation. Together, our results illustrate the far-reaching implications of the temporal autocorrelations that exist in all neuroimaging data for classification experiments. Further, our results calibrate the underlying difficulty of the tasks involved and caution against overly optimistic, but incorrect, claims to the contrary.

13.
Glob Pediatr Health ; 7: 2333794X20931613, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32656301

RESUMO

Fever is considered as a frequent symptom in childhood and is the cause of almost 65% to 70% of pediatric visits. Saudi Arabia has about 10% of child population (under 4 years of age), imposing a high burden of childhood illnesses including fever. A total of 1700 questionnaires were distributed to Saudi parents with children visiting pediatric clinic. Most of the participants were mothers (77.4%). A temperature of 38.0 °C was defined fever by 42% of participants. The majority of parents (80%) believed seizure is the consequence of untreated high fever. A total of 72.5% indicated that 40.7 to 43.20°C is the highest temperature that can be reached if untreated. There was a statistically significant relationship between mothers and fathers for overall knowledge, attitude, and practice scores. This study indicates that numerous misconceptions still persist regarding fever as more than 90% of parents demonstrated undue fear of consequent body damage from fever and also believed antibiotics can reduce high temperature.

14.
Pak J Pharm Sci ; 30(2(Suppl.)): 567-572, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28650322

RESUMO

Newcastle disease is highly infectious viral disease causing huge economic losses worldwide. These losses can be prevented by control of viral diseases. Medicinal plants have been traditionally used for treatment of different diseases since long. In this study the effect of extracts from Glycyrrhiza glabra leaves are investigated against Newcastle disease virus (NDV) by an in-vivo assay. Seven groups of nine-day-old embryonated chicken eggs were inoculated with various treatments of different plant extracts. All the groups except uninoculated negative control group were inoculated with velogenic NDV strain; five groups received different concentrations of the three extracts. Daily observe the rate of embryo survival. Allantoic fluid from treated eggs was collected for hem agglutination test. Results showed that embryo survival rate was higher 300µg/mL treated group as all the extracts showed antiviral activity. Similarly, the plant extracts effectively control virus as no viruses were identified in the allantoic fluids of all groups treated with low doses of plant. The current results have clearly verified that all the extracts especially that of methanol 300µg/mL from leaves of Glycyrrhiza glabra have strong antiviral activity against NDV in vivo.


Assuntos
Inibidores Enzimáticos/farmacologia , Glycyrrhiza/química , Vírus da Doença de Newcastle/efeitos dos fármacos , Extratos Vegetais/farmacologia , Animais , Galinhas , Relação Dose-Resposta a Droga , Inibidores Enzimáticos/química , Testes de Hemaglutinação , Óvulo/virologia , Extratos Vegetais/química , Folhas de Planta/química , Taxa de Sobrevida
15.
Pak J Pharm Sci ; 30(2(Suppl.)): 663-665, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28650337

RESUMO

The objective of study was to find out major correlates of neonatal mortality. The main focus was in determining the impact of different demographic and health related characteristics of neonates and their mothers. A planned questionnaire was prepared in order to collect the information from mothers of newborns. The data were collected from different public and private hospitals of Faisalabad district. Discharge condition of neonate (dead or alive) was taken as response. Binary logistic regression was applied in order to unveil the impact of different contributory factors on the chances of neonatal mortality. Marriage age of mother, age of mother at baby birth, number of pregnancies, time since last birth, antenatal care, delivery mode, gender of baby, baby weight, baby disease and its nature, domestic violence, baby nutrition and residence were found to be significant factors affecting neonatal mortality. Odds ratio was used as a measure of association. From the results, it can be summed up that marriages at optimal ages, lesser frequency of pregnancies, early initiation of mother feeding, increased care during pregnancy to avoid low birth weight and birth time diseases, and increased facilities of antenatal care in rural areas can effectively reduce the neonatal mortality rates.


Assuntos
Mortalidade Perinatal , Feminino , Humanos , Recém-Nascido , Paquistão/epidemiologia , Gravidez , Fatores de Risco , Fatores Socioeconômicos , Inquéritos e Questionários
16.
J Hazard Mater ; 318: 694-701, 2016 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-27484945

RESUMO

A small scale sample nuclear waste package, consisting of a 28mm diameter uranium penny encased in grout, was imaged by absorption contrast radiography using a single pulse exposure from an X-ray source driven by a high-power laser. The Vulcan laser was used to deliver a focused pulse of photons to a tantalum foil, in order to generate a bright burst of highly penetrating X-rays (with energy >500keV), with a source size of <0.5mm. BAS-TR and BAS-SR image plates were used for image capture, alongside a newly developed Thalium doped Caesium Iodide scintillator-based detector coupled to CCD chips. The uranium penny was clearly resolved to sub-mm accuracy over a 30cm(2) scan area from a single shot acquisition. In addition, neutron generation was demonstrated in situ with the X-ray beam, with a single shot, thus demonstrating the potential for multi-modal criticality testing of waste materials. This feasibility study successfully demonstrated non-destructive radiography of encapsulated, high density, nuclear material. With recent developments of high-power laser systems, to 10Hz operation, a laser-driven multi-modal beamline for waste monitoring applications is envisioned.

17.
Nat Commun ; 7: 10792, 2016 Apr 18.
Artigo em Inglês | MEDLINE | ID: mdl-27089200

RESUMO

All-optical approaches to particle acceleration are currently attracting a significant research effort internationally. Although characterized by exceptional transverse and longitudinal emittance, laser-driven ion beams currently have limitations in terms of peak ion energy, bandwidth of the energy spectrum and beam divergence. Here we introduce the concept of a versatile, miniature linear accelerating module, which, by employing laser-excited electromagnetic pulses directed along a helical path surrounding the laser-accelerated ion beams, addresses these shortcomings simultaneously. In a proof-of-principle experiment on a university-scale system, we demonstrate post-acceleration of laser-driven protons from a flat foil at a rate of 0.5 GeV m(-1), already beyond what can be sustained by conventional accelerator technologies, with dynamic beam collimation and energy selection. These results open up new opportunities for the development of extremely compact and cost-effective ion accelerators for both established and innovative applications.

18.
Pak J Pharm Sci ; 29(6 Suppl): 2321-2326, 2016 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28167473

RESUMO

Glimepiride and atorvastatin in combination are commonly employed for treating the hyperglycemia and dyslipidemia, respectively, in patients of type 2 diabetes. The present study was designed to find out the influence of atorvastatin on urinary excretion and renal clearance of Glimepiride in healthy adult male volunteers. In each experimental subject, Glimepiride 2mg was given orally after an overnight fasting. Samples of blood and urine were taken at different specific time intervals. After a washout period of ten days, Glimepiride 2mg was co-administered with atorvastatin 20mg orally. Post-medication, blood and urine samples were collected following the same sampling schedule as for Glimepiride alone. The samples were analyzed for Glimepiride and creatinine concentration by HPLC-UV and Spectrophotometer, respectively. Mean (±SE) values for blood pH 7.445±0.05 and 7.382±0.05, urine pH 4.972±0.08 and 5.08±0.10, diuresis 0.0207±0.00 and 0.0237±0.00ml/min/kg, endogenous creatinine in plasma 9.048±0.33 and 8.613±0.024µg/ml, endogenous creatinine in urine 512.34±18.20 and 556.72±4.60µg/ml, Glimepiride plasma concentration 0.16069±0.00 and 0.3227±0.01µg/ml, Glimepiride urine concentration 1.5994±0.03 and 0.8665±0.04µg/ml, renal clearance of creatinine 1.224±0.09 and 1.550±0.09ml/min/kg, renal clearance of Glimepiride 0.2064±0.01 and 0.0641±0.00ml/min/kg and clearance ratio 0.1791±0.01 and 0.0414±0.00 were observed for Glimepiride alone and its concurrent administration with atorvastatin, respectively. Atorvastatin decreased the urinary excretion and renal clearance of Glimepiride due to which chances of hypoglycemia provokes and renal handling of Glimepiride involves back diffusion besides glomerular filtration and no influence of atorvastatin was seen on these mechanisms.


Assuntos
Atorvastatina/administração & dosagem , Inibidores do Citocromo P-450 CYP2C9/administração & dosagem , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Hipoglicemiantes/urina , Rim/efeitos dos fármacos , Eliminação Renal/efeitos dos fármacos , Compostos de Sulfonilureia/urina , Adulto , Atorvastatina/efeitos adversos , Cromatografia Líquida de Alta Pressão , Citocromo P-450 CYP2C9/metabolismo , Inibidores do Citocromo P-450 CYP2C9/efeitos adversos , Interações Medicamentosas , Voluntários Saudáveis , Humanos , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/farmacocinética , Rim/metabolismo , Masculino , Espectrofotometria Ultravioleta , Compostos de Sulfonilureia/administração & dosagem , Compostos de Sulfonilureia/farmacocinética
19.
Artigo em Inglês | MEDLINE | ID: mdl-15316543

RESUMO

OBJECTIVE: Maxillofacial injuries constitute a substantial proportion of cases of trauma. This descriptive analytical study assesses the cause, type, incidence, demographic, and treatment data of maxillofacial fractures managed at Al Qassimi Hospital in Sharjah, United Arab Emirates, during a 4-year period and compares them with the existing body of literature on the subject. STUDY DESIGN: The medical records and radiographs of 230 patients treated for maxillofacial fractures at the Al Qassimi General Hospital over a 4-year period (from 1999 to 2002) were reviewed. A number of parameters, including the patient's age, gender, race, occupation, and mechanism of injury, type of facial injuries, treatment modality, and postoperative complications were recorded and assessed. RESULTS: Men 20 to 29 years of age sustained the most maxillofacial fractures. The ratio of males to females was 11:1. Most fractures were caused by motor vehicle crashes (75%), followed by falls (12%) and violent assaults (8%). There were 150 (51%) mandibular, 102 (34%) maxillary, and 22 (7.4%) zygomatic fractures. Regarding distribution of mandibular fractures, the majority (25%, 38/150) occurred in the condyle, 23% (35/150) in the angle, and 20% (30/150) in the body. The distribution of maxillary fractures were 49.0% (50/102) dentoalveolar, 29.4% (30/102) Le Fort I, and 10.7% (11/102) were Le Fort II fractures. More than half of all cases were treated by closed reduction (67%). Complications occurred in 5.6% of patients. CONCLUSION: The findings of this study, compared with similar studies reported in the literature, support the view that the causes and incidence of maxillofacial injuries vary from one country to another and, as such, can provide a guide to the design of programs geared toward prevention and treatment.


Assuntos
Traumatismos Maxilofaciais/epidemiologia , Fraturas Cranianas/epidemiologia , Acidentes por Quedas/estatística & dados numéricos , Acidentes de Trânsito/estatística & dados numéricos , Adolescente , Adulto , Fatores Etários , Criança , Feminino , Fixação de Fratura/estatística & dados numéricos , Humanos , Masculino , Fraturas Mandibulares/epidemiologia , Fraturas Maxilares/epidemiologia , Pessoa de Meia-Idade , Ocupações/estatística & dados numéricos , Complicações Pós-Operatórias/epidemiologia , Grupos Raciais/estatística & dados numéricos , Estudos Retrospectivos , Fatores Sexuais , Emirados Árabes Unidos/epidemiologia , Violência/estatística & dados numéricos , Fraturas Zigomáticas/epidemiologia
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