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1.
Environ Pollut ; 267: 115482, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32889517

RESUMO

Extensive use of magnetic iron oxide (magnetite) nanoparticles (IONP) has raised concerns about their biocompatibility. It has also stimulated the search for its green synthesis with greater biocompatibility. Addressing the issue, this study investigates the molecular nanotoxicity of IONP with embryonic and adult zebrafish, and reveal novel green fabrication of iron oxide nanoparticles (P-IONP) using medicinal plant extract of Phyllanthus niruri. The synthesized P-IONP was having a size of 42 ± 08 nm and a zeta potential of -38 ± 06 mV with hydrodynamic diameter of 109 ± 09 nm and 90emu/g magnetic saturation value. High antibacterial efficacy of P-IONP was found against E.coli. Comparative in vivo biocompatibility assessment with zebrafish confirmed higher biocompatibility of P-IONP compared to commercial C-IONP in the relevance of mortality rate, hatching rate, heart rate, and morphological abnormalities. LC50 of P-IONP and C-IONP was 202 µg/ml and 126 µg/ml, respectively. Molecular nano-biocompatibility analysis revealed the phenomenon as an effect of induced apoptosis lead by dysregulation of induced oxidative stress due to structural and functional influence of IONP to Sod1 and Tp53 proteins through intrinsic atomic interaction.


Assuntos
Nanopartículas , Phyllanthus , Animais , Antibacterianos/toxicidade , Apoptose , Compostos Férricos/farmacologia , Estresse Oxidativo , Peixe-Zebra
2.
PLoS Med ; 17(3): e1003070, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32231366

RESUMO

BACKGROUND: We performed a cross-sectional survey in April-May 2018 among Rohingya in Cox's Bazar, Bangladesh, to assess polio immunity and inform vaccination strategies. METHODS AND FINDINGS: Rohingya children aged 1-6 years (younger group) and 7-14 years (older group) were selected using multi-stage cluster sampling in makeshift settlements and simple random sampling in Nayapara registered camp. Surveyors asked parents/caregivers if the child received any oral poliovirus vaccine (OPV) in Myanmar and, for younger children, if the child received vaccine in any of the 5 campaigns delivering bivalent OPV (serotypes 1 and 3) conducted during September 2017-April 2018 in Cox's Bazar. Dried blood spot (DBS) specimens were tested for neutralizing antibodies to poliovirus types 1, 2, and 3 in 580 younger and 297 older children. Titers ≥ 1:8 were considered protective. Among 632 children (335 aged 1-6 years, 297 aged 7-14 years) enrolled in the study in makeshift settlements, 51% were male and 89% had arrived after August 9, 2017. Among 245 children (all aged 1-6 years) enrolled in the study in Nayapara, 54% were male and 10% had arrived after August 9, 2017. Among younger children, 74% in makeshift settlements and 92% in Nayapara received >3 bivalent OPV doses in campaigns. Type 1 seroprevalence was 85% (95% CI 80%-89%) among younger children and 91% (95% CI 86%-95%) among older children in makeshift settlements, and 92% (88%-95%) among younger children in Nayapara. Type 2 seroprevalence was lower among younger children than older children in makeshift settlements (74% [95% CI 68%-79%] versus 97% [95% CI 94%-99%], p < 0.001), and was 69% (95% CI 63%-74%) among younger children in Nayapara. Type 3 seroprevalence was below 75% for both age groups and areas. The limitations of this study are unknown routine immunization history and poor retention of vaccination cards. CONCLUSIONS: Younger Rohingya children had immunity gaps to all 3 polio serotypes and should be targeted by future campaigns and catch-up routine immunization. DBS collection can enhance the reliability of assessments of outbreak risk and vaccination strategy impact in emergency settings.


Assuntos
Poliomielite/epidemiologia , Vacina Antipólio Oral/administração & dosagem , Refugiados/estatística & dados numéricos , Vacinação/estatística & dados numéricos , Adolescente , Bangladesh/epidemiologia , Criança , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Lactente , Masculino , Mianmar/etnologia , Poliomielite/etiologia , Poliomielite/prevenção & controle , Prevalência , Estudos Soroepidemiológicos
3.
Ecotoxicol Environ Saf ; 192: 110321, 2020 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-32061978

RESUMO

Day to day consumption of black pepper raise concern about the detailed information about their medicinal, pharmaceutical values and knowledge about the biocompatibility with respect to ecosystem. This study investigates the in vivo selective molecular biocompatibility of its seed cover (SC) and seed core (SP) powder extract using embryonic zebrafish model. Gas chromatography mass spectrometry (GCMS) analysis of the extract prepared by grinding showed presence of different components with "piperine" as principle component. Biocompatibility analysis showed dose and time dependent selective effect of SC and SP with LC50 of 30.4 µg/ml and 35.6 µg/ml, respectively on survivability, hatching and heartbeat rate in embryonic zebrafish. Mechanistic investigation elucidated it as effect of accumulation and internalization of black pepper leading to their influence on structure and function of cellular proteins hatching enzyme (he1a), superoxide dismutase (sod1) and tumor protein (tp53) responsible for delayed hatching, oxidative stress induction and apoptosis. The study provided insight to selective biocompatibility of black pepper expedient to produce higher quality spices with respect to pharmaceutical, clinical and environmental aspects.


Assuntos
Alcaloides/química , Apoptose/efeitos dos fármacos , Benzodioxóis/química , Estresse Oxidativo/efeitos dos fármacos , Piper nigrum/toxicidade , Piperidinas/química , Alcamidas Poli-Insaturadas/química , Alcaloides/análise , Animais , Benzodioxóis/análise , Piper nigrum/química , Piper nigrum/embriologia , Piperidinas/análise , Extratos Vegetais/química , Extratos Vegetais/toxicidade , Alcamidas Poli-Insaturadas/análise , Sementes/química , Sementes/toxicidade , Superóxido Dismutase/metabolismo , Proteína Supressora de Tumor p53/metabolismo , Peixe-Zebra/embriologia , Peixe-Zebra/fisiologia , Proteínas de Peixe-Zebra/química , Proteínas de Peixe-Zebra/metabolismo
4.
Sci Total Environ ; 713: 136521, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-31951838

RESUMO

Increasing demand for magnesium oxide (MgO) nanoparticles (NP) due to their extensive use in different physical and biological applications has raised concern on their biocompatibility and toxicity to human health and ecological safety. This has instigated quest for detailed information on their toxicity mechanism, along with ecofriendly synthesis as a potential solution. This study explores the toxicity of MgO NP at the molecular level using embryonic zebrafish (Danio rerio) and depicts the green synthesis of MgO (G-MgO) NP using the extract from a medicinal plant Calotropis gigantea. Synthesized G-MgO NP were characterized using microscopy, spectroscopy, and dynamic light scattering. Stable 55 ± 10 nm sized MgO NP were generated with a zeta potential of 45 ± 15 mV and hydrodynamic size 110 ± 20 nm. UV-Vis spectrum showed a standard peak at 357 nm. Comparative cellular toxicity analysis showed higher biocompatibility of G-MgO NP compared to MgO NP with reference to the morphological changes, notochord development, and heartbeat rate in embryonic zebrafish LC50 of G-MgO NP was 520 µg/mL compared to 410 µg/mL of MgO NP. Molecular toxicity investigation revealed that the toxic effects of MgO NP was mainly due to the influential dysregulation in oxidative stress leading to apoptosis because of the accumulation and internalization of nanoparticles and their interaction with cellular proteins like Sod1 and p53, thereby affecting structural integrity and functionality. The study delineated the nanotoxicity of MgO NP and suggests the adoption and use of new green methodology for future production.


Assuntos
Nanopartículas Metálicas , Animais , Apoptose , Arginina , Óxido de Magnésio , Peixe-Zebra
5.
Methods Mol Biol ; 2107: 99-126, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31893444

RESUMO

Legume crops offer a wide genetic diversity that can be exploited to raise improved crop varieties with higher tolerance against adverse climatic conditions. In order to achieve food and nutritional security, legume breeding programs should also incorporate advanced genomics tools. Genomes of many model and nonmodel legume crops have been sequenced, which provide opportunities to identify and characterize candidate genes to develop abiotic stress tolerant crops. Gene expression profiling is a powerful tool to identify candidate genes and understand their function. The present chapter describes two such strategies, that is, candidate gene expression profiling approach and global transcriptome profiling approach. The methods like RT-PCR and qRT-PCR that are being traditionally used to study expression of target genes under defined experimental conditions are discussed. In addition, global transcriptome analysis approach and its advancements are discussed. Details of next-generation sequencing (NGS) based RNA-sequencing (RNA-seq) and associated advanced bioinformatics tools to identify differentially expressing genes at a global level are also described.


Assuntos
Fabaceae/crescimento & desenvolvimento , Perfilação da Expressão Gênica/métodos , Proteínas de Plantas/genética , Produtos Agrícolas/genética , Produtos Agrícolas/crescimento & desenvolvimento , Fabaceae/genética , Regulação da Expressão Gênica de Plantas , Sequenciamento de Nucleotídeos em Larga Escala , Melhoramento Vegetal , Reação em Cadeia da Polimerase em Tempo Real , Análise de Sequência de RNA , Estresse Fisiológico , Sequenciamento do Exoma
6.
Nanomedicine (Lond) ; 13(19): 2415-2433, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30251920

RESUMO

AIM: To investigate the biocompatibility of green synthesized copper oxide nanoparticles (CuO Np) using floral extract of Calotropis gigantea in room condition. MATERIALS & METHODS: Green synthesized and characterized CuO Np was evaluated for their cellular and molecular biocompatibility by experimentally and computational molecular docking. RESULTS: Synthesized CuO NP was found to have a size 32 ± 09 nm with Î¶ potential -35 ± 12 mV. LC50 value was found to be 190 µg/ml. In vitro and in silico cytotoxicity analysis with HEK293 cells revealed the cytotoxic effect of CuO Np as consequences of interaction with histidine and arginine amino acid residues of Sod3 and p53 proteins via hydrogen bond of length 3.09 and 3.32 Å leading to oxidative stress ensuing toward apoptosis and cell cycle arrest. CONCLUSION: The outcomes proved the synthesized material as an alternative to the conventional method of synthesizing copper nanoparticles for biomedical and clinical applications.


Assuntos
Materiais Biocompatíveis/farmacologia , Nanopartículas Metálicas/administração & dosagem , Estresse Oxidativo/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Materiais Biocompatíveis/química , Sobrevivência Celular/efeitos dos fármacos , Cobre/química , Células HEK293 , Humanos , Nanopartículas Metálicas/química , Simulação de Acoplamento Molecular
7.
Sci Rep ; 7(1): 16284, 2017 11 24.
Artigo em Inglês | MEDLINE | ID: mdl-29176605

RESUMO

With the rapid development of nanotechnology, much has been anticipated with copper oxide nanoparticles (CuO NP) due to their extensive industrial and commercial application. However, it has raised concern over the environmental safety and human health effects. In this study, CuO nanoparticles were synthesized using the green method with floral extract of Calotropis gigantea and characterized by standard physiochemical techniques like DLS, Zeta potential determination, UV- Visible Spectroscopy, XRD, FTIR, FESEM, and TEM. Mechanistic cytotoxicity studies were performed using experimental and computational assays including morphological analysis, hatching, and viability rate analysis along with ROS and apoptosis analysis. Physiochemical characterization of CuO NP determined the size and zeta potential of synthesized nanoparticles to be 30 ± 09 nm to 40 ± 2 nm and -38 mV ± 12 mV respectively. Cytotoxicity evaluation with Zebrafish revealed malfunctioned organ development with differential viability and hatching rate at 48 hpf and 72 hpf with LC50 of 175 ± 10 mg/l. Computational analysis depicted the influential role of CuO nanoparticles on zebrafish embryo's he1a, sod1 and p53 functional expression through hydrophobic and hydrogen bond interaction with amino acid residues. Study demonstrated valuable information of cytotoxic impact which can be influential in further studies of their eco-toxicological effects.


Assuntos
Apoptose/fisiologia , Calotropis/química , Cobre/química , Nanopartículas Metálicas/química , Espécies Reativas de Oxigênio/metabolismo , Animais , Nanotecnologia/métodos , Espectroscopia de Infravermelho com Transformada de Fourier , Peixe-Zebra
8.
J Infect Dis ; 216(suppl_1): S122-S129, 2017 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-28838154

RESUMO

Background: We assessed programmatic adaptations and infants' uptake of inactivated poliovirus vaccine (IPV) after its introduction into the routine immunization schedule in Bangladesh. Methods: Using convenience and probability sampling, we selected 23 health facilities, 36 vaccinators, and 336 caregivers, within 5 districts and 3 city corporations. We collected data during August-October 2015 by conducting interviews, reviewing vaccination records, and observing activities. Results: Knowledge about IPV was high among vaccinators (94%). No problems with IPV storage, transport, or waste disposal were detected, but shortages were reported in 20 health facilities (87%). Wastage per 5-dose vaccine vial was above the recommended 30% in 20 health facilities (87%); all were related to providing <5 doses per open vial. Among eligible infants, 87% and 86% received the third dose of pentavalent and oral poliovirus vaccine, respectively, but only 65% received IPV at the same visit. Among 73 infants not vaccinated with IPV, 58% of caregivers reported that vaccine was unavailable. Conclusions: Bangladesh successfully introduced IPV, but shortages related to insufficient global supply and high vaccine wastage in small outreach immunization sessions might reduce its impact on population immunity. Minimizing wastage and use of a 2-dose fractional-IPV schedule could extend IPV immunization to more children.


Assuntos
Pessoal de Saúde/estatística & dados numéricos , Programas de Imunização/provisão & distribuição , Programas de Imunização/estatística & dados numéricos , Poliomielite/prevenção & controle , Vacina Antipólio de Vírus Inativado/administração & dosagem , Bangladesh/epidemiologia , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Esquemas de Imunização , Lactente
9.
J Infect Dis ; 216(suppl_1): S114-S121, 2017 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-28838173

RESUMO

Background: Introduction of inactivated polio vaccine creates challenges in maintaining the cold chain for vaccine storage and distribution. Methods: We evaluated the cold chain in 23 health facilities and 36 outreach vaccination sessions in 8 districts and cities of Bangladesh, using purposive sampling during August-October 2015. We interviewed immunization and cold-chain staff, assessed equipment, and recorded temperatures during vaccine storage and transportation. Results: All health facilities had functioning refrigerators, and 96% had freezers. Temperature monitors were observed in all refrigerators and freezers but in only 14 of 66 vaccine transporters (21%). Recorders detected temperatures >8°C for >60 minutes in 5 of 23 refrigerators (22%), 3 of 6 cold boxes (50%) transporting vaccines from national to subnational depots, and 8 of 48 vaccine carriers (17%) used in outreach vaccination sites. Temperatures <2°C were detected in 4 of 19 cold boxes (21%) transporting vaccine from subnational depots to health facilities and 14 of 48 vaccine carriers (29%). Conclusions: Bangladesh has substantial cold-chain storage and transportation capacity after inactivated polio vaccine introduction, but temperature fluctuations during vaccine transport could cause vaccine potency loss that could go undetected. Bangladesh and other countries should strive to ensure consistent and sufficient cold-chain storage and monitor the cold chain during vaccine transportation at all levels.


Assuntos
Programas de Imunização , Vacina Antipólio de Vírus Inativado , Refrigeração , Bangladesh , Estabilidade de Medicamentos , Humanos , Programas de Imunização/organização & administração , Programas de Imunização/normas , Programas de Imunização/estatística & dados numéricos , Poliomielite/prevenção & controle , Vacina Antipólio de Vírus Inativado/química , Vacina Antipólio de Vírus Inativado/provisão & distribuição , Refrigeração/métodos , Refrigeração/normas , Refrigeração/estatística & dados numéricos , Meios de Transporte
10.
Bangladesh Med Res Counc Bull ; 40(3): 97-101, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26402973

RESUMO

OBJECTIVES: To test the hypothesis that pregnant women with high serum ßhCG level and serum dyslipidemia in second trimester are more prone to develop subsequent Pregnancy Induced Hypertension (PIH). MATERIALS & METHODS: One hundred pregnant women with singleton pregnancy between 14 and 20 weeks of gestation attending antenatal outpatient department (OPD) of SMCH were studied. Serum ßhCG was estimated by two-site chemiluminescent-immunometric method. Serum lipid profile was evaluated by enzymatic colorimetric test with Lipid Clearing Factor (LCF). RESULTS: Eighteen cases developed PIH while eighty two cases remained normotensive. The serum ßhCG level was significantly high (p (see symbol) 0.001) in those women developing PIH. Serum concentration of total cholesterol in women who subsequently developed PIH was significantly higher than that of normotensive group (p (see symbol) 0.05). Mean TG value in PIH group was higher than the normotensive group. Level of LDL in PIH group was also significant (p (see symbol) 0.05). CONCLUSION: Present study showed that elevated serum ßhCG and Dyslipidemia in second trimester can be considered as predictors of subsequent PIH / Pre-eclampsia. However, there is need of large community based prospective study to validate the result.


Assuntos
Gonadotropina Coriônica Humana Subunidade beta/sangue , Dislipidemias/sangue , Hipertensão Induzida pela Gravidez , Adulto , Biomarcadores , Feminino , Humanos , Valor Preditivo dos Testes , Gravidez , Segundo Trimestre da Gravidez , Estudos Prospectivos , Adulto Jovem
11.
Diabetes Obes Metab ; 15(12): 1101-10, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-23782502

RESUMO

AIMS: The effects of sitagliptin and pioglitazone, alone and in combination, on α- and ß-cell function were assessed in patients with type 2 diabetes. METHODS: Following a 6-week diet/exercise period, 211 patients with HbA1c of 6.5-9.0% and fasting plasma glucose of 7.2-14.4 mmol/l were randomized (1 :1 :1 : 1) to sitagliptin, pioglitazone, sitagliptin + pioglitazone or placebo. At baseline and after 12 weeks, patients were given a mixed meal followed by frequent blood sampling for measurements of glucose, insulin, C-peptide and glucagon. RESULTS: After 12 weeks, 5-h glucose total area under the curve (AUC) decreased in all active treatments versus placebo; reduction with sitagliptin + pioglitazone was greater versus either monotherapy. The 5-h insulin total AUC increased with sitagliptin versus all other treatments and increased with sitagliptin + pioglitazone versus pioglitazone. The 3-h glucagon AUC decreased with sitagliptin versus placebo and decreased with sitagliptin + pioglitazone versus pioglitazone or placebo. Φ(s), a measure of dynamic ß-cell responsiveness to above-basal glucose concentrations, increased with either monotherapy versus placebo and increased with sitagliptin + pioglitazone versus either monotherapy. The insulin sensitivity index (ISI), a composite index of insulin sensitivity, improved with pioglitazone and sitagliptin + pioglitazone versus placebo. The disposition index, a measure of the relationship between ß-cell function and insulin sensitivity, improved with all active treatments versus placebo. CONCLUSIONS: Sitagliptin and pioglitazone enhanced ß-cell function (increasing postmeal Φ(s)), and sitagliptin improved α-cell function (decreasing postmeal glucagon) after 12 weeks in patients with type 2 diabetes. Through these complementary mechanisms of action, the combination of sitagliptin and pioglitazone reduced postmeal glucose more than either treatment alone.


Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Células Secretoras de Glucagon/efeitos dos fármacos , Hipoglicemiantes/administração & dosagem , Células Secretoras de Insulina/efeitos dos fármacos , Pirazinas/administração & dosagem , Tiazolidinedionas/administração & dosagem , Triazóis/administração & dosagem , Adulto , Idoso , Glicemia/efeitos dos fármacos , Glicemia/metabolismo , Peptídeo C/metabolismo , Diabetes Mellitus Tipo 2/fisiopatologia , Método Duplo-Cego , Quimioterapia Combinada , Glucagon/metabolismo , Humanos , Hipoglicemiantes/efeitos adversos , Insulina/metabolismo , Pessoa de Meia-Idade , Pioglitazona , Período Pós-Prandial/efeitos dos fármacos , Pirazinas/efeitos adversos , Fosfato de Sitagliptina , Tiazolidinedionas/efeitos adversos , Resultado do Tratamento , Triazóis/efeitos adversos
12.
East Mediterr Health J ; 16 Suppl: S98-105, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-21495595

RESUMO

The October 2005 earthquake in Pakistan created a new generation of "persons with disabilities" (PWDs) in the affected districts. A total of 741 people suffered spinal injuries while 713 underwent amputations. A comprehensive response was launched jointly by the Ministry of Health, Earthquake Reconstruction and Rehabilitation Authority and the World Health Organization involving rescue and recovery, hospitalization, surgical interventions, building of infrastructure, development of technical guidelines to improve quality of care, human resource deployment and training. The first national megaproject for institutional and community-based rehabilitation (CBR) services was launched in the earthquake-affected areas. The institutional management of PWDs is now carried out alongside the CBR programme. This intervention also led to the concept of a national CBR programme. The study aims to identify the post-earthquake situation regarding the magnitude and type of physical disabilities and to highlight the rehabilitative interventions undertaken.


Assuntos
Pessoas com Deficiência/reabilitação , Terremotos/estatística & dados numéricos , Ferimentos e Lesões/reabilitação , Pessoas com Deficiência/estatística & dados numéricos , Feminino , Humanos , Masculino , Paquistão/epidemiologia , Ferimentos e Lesões/epidemiologia
13.
(East. Mediterr. health j).
em Inglês | WHO IRIS | ID: who-118028

RESUMO

The October 2005 earthquake in Pakistan created a new generation of [persons with disabilities] [PWDs] in the affected districts. A total of 741 people suffered spinal injuries while 713 underwent amputations. A comprehensive response was launched jointly by the Ministry of Health, Earthquake Reconstruction and Rehabilitation Authority and the World Health Organization involving rescue and recovery, hospitalization, surgical interventions, building of infrastructure, development of technical guidelines to improve quality of care, human resource deployment and training. The first national megaproject for institutional and community-based rehabilitation [CBR] services was launched in the earthquake-affected areas. The institutional management of PWDs is now carried out alongside the CBR programme. This intervention also led to the concept of a national CBR programme. The study aims to identify the post-earthquake situation regarding the magnitude and type of physical disabilities and to highlight the rehabilitative interventions undertaken


Assuntos
Terremotos , Reabilitação , Organização Mundial da Saúde , Programas Nacionais de Saúde , Pessoas com Deficiência
14.
Eur J Phys Rehabil Med ; 45(4): 559-66, 2009 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20032915

RESUMO

This paper reviewed the various hypotheses on phantom limb and phantom limb pain as well as all the related rehabilitation techniques to control these symptoms. The uncertainty in their pathophysiology strongly affects all the rehabilitation approaches so far used, as no single parameter has been found to predict or control phantom limb pain as well as no single factor can be quoted as an indicator of rehabilitation success for lower limb amputation. Within a comprehensive rehabilitation plan, behavioral interventions, stimulation techniques, feedback, physical therapies designed to possibly reverse the maladaptive memory traces and enhance its extinction have been described. Although substantially not clinically useful, pharmacological and surgical interventions also have been briefly considered. A reassessment of the actual strategies used is suggested with a role for rehabilitation not only after the amputation but also in the pre-emptive control of the pre-existing painful condition. In this process, rehabilitation should take into account many parameters, not always related to the traditional role of rehabilitation. Pain assessment before and after amputation, its natural history and clinical picture such as its quality, variations, level of the amputation, dominance, time interval between amputation and rehabilitation, as well as all the other phantom limb related phenomena should be considered and treated.


Assuntos
Extremidade Inferior , Membro Fantasma/reabilitação , Amputação Cirúrgica/efeitos adversos , Amputação Traumática/complicações , Amputação Traumática/fisiopatologia , Amputação Traumática/reabilitação , Humanos , Membro Fantasma/etiologia , Membro Fantasma/fisiopatologia
15.
Clin Pharmacol Ther ; 86(6): 659-66, 2009 12.
Artigo em Inglês | MEDLINE | ID: mdl-19741604

RESUMO

MK-0493 is a novel, potent, and selective agonist of the melanocortin receptor 4 (MC4R), one of the best-validated genetic targets and considered one of the most promising for the development of antiobesity therapeutics. An ad libitum energy-intake model was qualified with excellent reproducibility: the geometric mean ratio (GMR) with 95% confidence interval (CI) for total energy intake over a period of 24 h for 30 mg sibutramine/placebo was 0.82 (0.76, 0.88), and for 10 mg sibutramine/placebo it was 0.98 (0.91, 1.05). MK-0493 showed a small and marginally significant effect on 24-h energy intake, whereas 30 mg of sibutramine caused a significant reduction in total 24-h energy intake; specifically, the GMR (95% CI) for 30 mg sibutramine/placebo was 0.79 (0.74, 0.85). MK-0493 was associated with modest weight reduction from baseline but had only small, statistically insignificant effects relative to placebo after 12 weeks in a fixed-dose study and also after 18 weeks of stepped-titration dosing. We conclude that agonism of MC4R is not likely to represent a viable approach to the development of antiobesity therapeutics.


Assuntos
Acetamidas/uso terapêutico , Depressores do Apetite/uso terapêutico , Apetite/efeitos dos fármacos , Ciclobutanos/uso terapêutico , Ingestão de Energia/efeitos dos fármacos , Obesidade/tratamento farmacológico , Pirrolidinas/uso terapêutico , Receptor Tipo 4 de Melanocortina/agonistas , Redução de Peso/efeitos dos fármacos , Acetamidas/efeitos adversos , Acetamidas/farmacocinética , Adulto , Idoso , Depressores do Apetite/efeitos adversos , Depressores do Apetite/farmacocinética , Estudos Cross-Over , Método Duplo-Cego , Inglaterra , Humanos , Masculino , Pessoa de Meia-Idade , Obesidade/metabolismo , Pirrolidinas/efeitos adversos , Pirrolidinas/farmacocinética , Receptor Tipo 4 de Melanocortina/metabolismo , Fatores de Tempo , Falha de Tratamento , Estados Unidos , Adulto Jovem
16.
Eur J Pediatr Surg ; 19(5): 316-9, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19513968

RESUMO

BACKGROUND/PURPOSE: Many reports have addressed the feasibility and safety of robotic-assisted surgery. However, few have compared the use of robots with the standard laparoscopic approach in various procedures. The aim of this study was to compare robotic-assisted Nissen fundoplication (RNF) with laparoscopic Nissen fundoplication (LNF). METHODS: Children who underwent RNF were compared with those who underwent LNF during the same period at the same institution. Data collected included patient demographics, surgical indications, operative times, intraoperative and postoperative complications and clinical outcomes. RESULTS: Between January 2005 and July 2008, 25 patients underwent RNF and 25 underwent LNF. Both groups were similar with regard to age, male/female ratio, and body weight. The total operative time was comparable in both groups. There were no deaths, intraoperative complications or untoward events. There were no significant differences in postoperative complication rates, postoperative analgesic requirements or lengths of hospital stay between the groups. Short-term clinical results with respect to gastroesophageal reflux symptoms were comparable in both groups after 14 months of follow-up. CONCLUSION: RNF is a safe and feasible alternative to LNF. There were no significant differences in outcomes measured between groups. In view of the high cost of robotic devices, no clear benefits of using robotics in Nissen fundoplication were observed.


Assuntos
Fundoplicatura/instrumentação , Refluxo Gastroesofágico/cirurgia , Robótica , Cirurgia Assistida por Computador/instrumentação , Pré-Escolar , Feminino , Humanos , Laparoscopia , Masculino , Estudos Retrospectivos , Arábia Saudita , Resultado do Tratamento
17.
J Health Soc Policy ; 18(4): 1-11, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-15447878

RESUMO

We examine the effect of a large, comprehensive maternity and infant care (MIC) program on birthweight and infant mortality in an economically depressed urban population. The study is based on linked birth, infant death and program files for 1985-87 Cleveland and East Cleveland, Ohio, birth cohorts (N = 31,415). Taking into account differences in risk factors, Black MIC infants experienced lower neonatal and endogenous mortality, but White MIC infants had higher postneonatal and exogenous mortality than their same race, non-MIC counterparts. Birthweight distributions were also more favorable for Black than White clients. We discuss the policy implications of our findings.


Assuntos
Serviços de Saúde da Criança , Mortalidade Infantil , Serviços de Saúde Materna , Resultado da Gravidez , Negro ou Afro-Americano , Estudos de Coortes , Feminino , Pesquisa sobre Serviços de Saúde , Humanos , Recém-Nascido , Ohio/epidemiologia , Gravidez , Avaliação de Programas e Projetos de Saúde , Fatores de Risco , População Urbana , População Branca
18.
Drug Chem Toxicol ; 25(3): 281-92, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12173249

RESUMO

The present work examined the changes in testicular activities in relation to testicular oxidative stress in cyclophosphamide as well as human chorionic gonadotrophin (hCG) co-treated cyclophosphamide treated Wistar strain rats. Testicular activities were evaluated by the quantification of spermatogenesis and by the measurement of steroidogenic key enzyme activities along with plasma levels of testosterone. Testicular oxidative stress in relation to cyclophosphamide treatment was monitored by the study of products of free radicals like conjugated dienes and malondialdehyde (MDA) as well as the activity of testicular antioxidant enzymes like peroxidase and catalase. Cyclophosphamide treatment at the dose of 5 mg/kg body weight/day for 28 days resulted a significant diminution in the activities of testicular delta 5, 3 beta-hydroxysteroid dehydrogenase (delta 5, 3 beta-HSD), 17 beta-hydroxysteroid dehydrogenase (17 beta-HSD) activities, plasma level of testosterone along with significant reduction in the number of germ cells at stage-VII of spermatogenesis. Levels of testicular MDA and conjugated dienes both were elevated whereas testicular peroxidase and catalase activities both were inhibited significantly in cyclophosphamide treated rats in comparison to control. After hCG co-administration at the dose of 5 I.U./kg body weight/day for 28 days in cyclophosphamide treated rats resulted a significant protection in the activities of testicular peroxidase and catalase along with significant decrease in the levels of MDA and conjugated dienes to the control level. Moreover, the testicular steroidogenic key enzyme activities and spermatogenesis along with plasma levels of testosterone were restored to the control level. Therefore, it may be concluded that there is a correlation between testicular steroidogenic activities as well as spermatogenesis and testicular oxidative stress in cyclophosphamide treated rats. Moreover, as restoration of plasma testosterone to the control level is noted in hCG co-treated cyclophosphamide treated rat, therefore, the results suggest that testosterone may be the key regulator for this correlation.


Assuntos
Antineoplásicos Alquilantes/efeitos adversos , Ciclofosfamida/efeitos adversos , Estresse Oxidativo , Espermatogênese/efeitos dos fármacos , Testículo/efeitos dos fármacos , Testículo/fisiologia , Testosterona/biossíntese , Animais , Gonadotropina Coriônica/farmacologia , Masculino , Ratos , Ratos Wistar , Testosterona/sangue
19.
J Pediatr Hematol Oncol ; 22(5): 412-6, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11037851

RESUMO

PURPOSE: The aim of this study was to determine the prevalence, modalities, and determinants of use of unconventional therapies among children with cancer receiving conventional treatment at an urban academic medical center in the United States. PATIENTS AND METHODS: We interviewed the parents of patients and/or patients who were receiving or had received conventional therapy for treatment of childhood cancer. Of 78 patients/ parents asked, 75 consented to the interview, which included demographic factors, life events, and use of unconventional therapies. All participants also consented to the abstraction of chart data for this study. RESULTS: Overall, 84% of respondents reported the use of one or more unconventional therapies. The most commonly used modalities were changes in diet, nutritional and herbal agents, and mind/body treatments. Most users had tried more than one unconventional modality. No difference in use was seen by cancer diagnosis, race/ethnicity, socio-economic status, or educational attainment of the respondent. Of the therapies used, 50% were not reported to the physicians. Of patients reporting use of an unconventional approach, 85% were concurrently enrolled on clinical trials for primary treatment of their cancer. CONCLUSIONS: The use of unconventional therapies is highly prevalent among children with cancer and is not associated with demographic or clinical factors or participation in clinical trials. The possibility that an unconventional treatment may interact with a protocol treatment underscores the need for more information about the use of such therapies among all patients.


Assuntos
Terapias Complementares , Neoplasias/terapia , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade
20.
Nurs Res ; 49(2): 97-100, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10768586

RESUMO

BACKGROUND: There have been no reports of validation studies on the nursing diagnosis of relocation stress syndrome (RSS). OBJECTIVES: To validate the presence of some defining characteristics of RSS in a group of long-term care residents relocated en masse to a new facility. METHODS: This study measured the effects of relocation on 106 elderly residents moved from one long-term care facility to another. The presence of five characteristics defining the nursing diagnosis of RSS (dependency, confusion, anxiety, depression, and withdrawal) were measured using the Multidimensional Observation Scale for Elderly Subjects (MOSES) scale, a tool previously validated for use among similar groups of individuals. Using the Chenitz model of relocation, measures were taken twice before and twice after the move to examine changes in these characteristics over time. No extraordinary efforts were made to alleviate RSS. RESULTS: Repeated measures analysis of variance indicated no differences in the mean scores (p < 0.05) on these factors overall or from one measurement period to another. CONCLUSION: On the basis of the findings from this research and supporting literature, the appropriateness of anticipating RSS during mass moves is questioned. Additional research with other measurement tools should be conducted to verify these results.


Assuntos
Assistência de Longa Duração , Diagnóstico de Enfermagem , Transferência de Pacientes , Estresse Psicológico/diagnóstico , Estresse Psicológico/etiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise de Variância , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes
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