Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 119
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Acad Psychiatry ; 46(2): 162-166, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34751936

RESUMO

OBJECTIVE: During residency training, parental leave is frequently briefer than may be optimal for the well-being of the family. The Accreditation Council for Graduate Medical Education (ACGME) requires residency programs to have a parental leave policy without providing specific guidelines on its makeup, resulting in varying policies and confusion among residents planning parental leave. This study identifies differences in parental leave policies in psychiatry residencies and discusses if these policies are adequate. METHODS: A 45-question, anonymous survey was emailed to general psychiatry and fellowship program directors in the USA. RESULTS: Out of 520 program directors contacted, 186 completed the survey (35.7% response rate). Among the respondents, 94.1% had policies for maternity leave, 79.8% had policies for paternity leave, and 67.2% had policies for non-childbearing parental leave (e.g., adoption). Variations were reported in implementation, coverage, and accommodations. Most respondents (57.1%) believed that residents would benefit from more parental leave. Some (11.5%) believed that parenthood negatively affected residents' overall performance, especially regarding patient care and clinical skills; 36.5% endorsed that parenthood negatively affected overall residents' well-being; and 7.5% felt negatively when an applicant was pregnant or was planning to become pregnant during residency. Lastly, 32.9% were not confident regarding ACGME, American Board of Psychiatry and Neurology, federal, and hospital policies. CONCLUSIONS: Parental leave policies are not universal in US psychiatry residency and fellowship programs. Some program directors feel that parenthood adversely affects residents' clinical performance as well as well-being. If true, reformation of parental leave policies may be a remedy.


Assuntos
Internato e Residência , Psiquiatria , Educação de Pós-Graduação em Medicina , Feminino , Humanos , Licença Parental , Gravidez , Inquéritos e Questionários , Estados Unidos
2.
Nutr Neurosci ; 22(6): 444-452, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29198184

RESUMO

OBJECTIVES: The aim of this study was to evaluate the hearing function in the guinea pig offspring at post-natal day (PNd) 24 and PNd84 born from dams suffering from iron deficiency during pregnancy and lactation by using the auditory brainstem response (ABR). METHOD: Female guinea pigs (n = 24 per dietary group) were fed an iron sufficient (IS) diet (114 mg/kg) or an iron deficient (ID) diet (11.7 mg/kg) during the gestation and lactation periods. Pups in both groups were weaned at PNd9 and given the IS diet. The hematocrit level was measured at every trimester of pregnancy and at the day of sacrifice in dams and at PNd24 and PNd84 in pups. The animal body weight was measured on every second day until the day of sacrifice. The ABR was used in pups to measure the hearing threshold using a broad range of stimulus intensities and latency at 100 and 80 dB in response to 2, 4, 8, 16, and 32 kHz tone pips at PNd24 and 84. RESULTS AND DISCUSSION: No significant difference between dietary groups was measured in hearing threshold and absolute latencies in pups at PNd24 and PNd84. Although the ID offspring (n = 16) did not differ in brainstem transmission times (BTTs) at 80 dB compare to the IS siblings (n = 25) at PNd24, they showed significant delayed inter-peak latency (IPL) I-IV at 100 dB suggesting a delayed BTT. At PNd84, the latency of all peaks including IPL I-IV at 80 and 100 dB significantly decreased and was also similar in pups from both dietary groups suggesting a better brain maturation. This is the first study investigating the long-term impact of maternal iron deficiency on the auditory functions in the guinea pig offspring during early development to adulthood.


Assuntos
Anemia Ferropriva/fisiopatologia , Limiar Auditivo , Complicações Hematológicas na Gravidez/fisiopatologia , Efeitos Tardios da Exposição Pré-Natal/fisiopatologia , Anemia Ferropriva/complicações , Animais , Potenciais Evocados Auditivos do Tronco Encefálico , Feminino , Cobaias , Ferro da Dieta/administração & dosagem , Masculino , Gravidez
3.
Ann Pharm Fr ; 76(1): 50-56, 2018 Jan.
Artigo em Francês | MEDLINE | ID: mdl-28935126

RESUMO

OBJECTIVE: The pharmaceutical record integrated in the health insurance card is now exploitable by hospital pharmacists. The aim of this study is to assess the impact of pharmaceutical record's use in hospital drugs sales service and the relevance of this tool to secure the ambulatory dispensing of drugs. METHOD: All patients admitted in hospital drugs sales service between June and October 2016 were included. With the patient's consent, pharmaceutical record was created and/or consulted and implemented. When it included the city pharmacy's treatment, a pharmaceutical analysis was carried out to research drug interaction with hospital drugs sales service's treatment. If a contraindicated or not recommended association was detected, a pharmaceutical intervention was sent to the general practitioner, by secured mail. Each stage was timed. RESULTS: For the 183 included patients, 40 pharmaceutical records have been created and 74 completed. For the 69 remaining patients, pharmaceutical record could not be used. At the end of these 5 months, 86 pharmaceutical records included city pharmacy's and hospital treatments. The pharmaceutical analysis performed have shown 24 drugs interactions related to hospital treatment; seven inappropriate associations were transmitted to the general practitioner. Five minutes were required for both the use and the analysis of pharmaceutical record. CONCLUSION: Now, the pharmaceutical record is systematically used in the hospital drugs sales service, and its content is systematically analyzed. It represents one of the tool improving communication between town-hospital networks, and helps secure the ambulatory drugs dispensation.


Assuntos
Serviço de Farmácia Hospitalar/organização & administração , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Assistência Ambulatorial , Criança , Pré-Escolar , Comunicação , Feminino , Clínicos Gerais , Humanos , Prescrição Inadequada/prevenção & controle , Lactente , Masculino , Prontuários Médicos , Pessoa de Meia-Idade , Farmacêuticos , Adulto Jovem
4.
Nutr Neurosci ; 19(10): 447-460, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25138699

RESUMO

OBJECTIVES: We previously demonstrated that a mild pre-natal/early post-natal iron-deficient anaemic (IDA) diet devoid of long-chain polyunsaturated fatty acids (LC-PUFA) affected development, neurophysiology, and cerebral lipid biochemistry of the guinea pigs' progeny. Impacts of dietary LC-PUFA on altered cerebral development resulting from pre-natal IDA are unknown. To address this health issue, impacts of mild gestational IDA in the presence of dietary LC-PUFA on the offsprings' neural maturation were studied in guinea pigs using auditory brainstem responses (ABRs) and assessments of brain fatty acids (FAs). METHODS: Female guinea pigs (n = 10/group) were fed an iron sufficient (IS) or IDA diet (146 and 12.7 mg iron/kg, respectively) with physiological amounts of LC-PUFA, during the gestation and lactation periods. From post-natal day (PNd) 9 onwards, the IS + PUFA diet was given to both groups of weaned offspring. Cerebral tissue and offsprings' ABR were collected on PNd24. RESULTS: There was no difference in peripheral and brainstem transmission times (BTTs) between IS + PUFA and IDA + PUFA siblings (n = 10/group); the neural synchrony was also similar in both groups. Despite the absence of differences in auditory thresholds, IDA + PUFA siblings demonstrated a sensorineural hearing loss in the extreme range of frequencies (32, 4, and 2 kHz), as well as modified brain FA profiles compared to the IS + PUFA siblings. DISCUSSION: The present study reveals that siblings born from dams exposed to a moderate IDA diet including balanced physiological LC-PUFA levels during pregnancy and lactation demonstrate minor impairments of ABR compared to the control siblings, particularly on the auditory acuity, but not on neural synchrony, auditory nerve velocity and BTT.


Assuntos
Anemia Ferropriva/fisiopatologia , Córtex Auditivo/fisiopatologia , Tronco Encefálico/fisiopatologia , Ácidos Graxos Essenciais/uso terapêutico , Lactação , Fenômenos Fisiológicos da Nutrição Materna , Neurogênese , Anemia Ferropriva/prevenção & controle , Animais , Córtex Auditivo/metabolismo , Limiar Auditivo , Tronco Encefálico/metabolismo , Ácidos Graxos Essenciais/metabolismo , Ácidos Graxos Ômega-3/metabolismo , Ácidos Graxos Ômega-3/uso terapêutico , Ácidos Graxos Ômega-6/metabolismo , Ácidos Graxos Ômega-6/uso terapêutico , Feminino , Desenvolvimento Fetal , Cobaias , Perda Auditiva Neurossensorial/etiologia , Perda Auditiva Neurossensorial/metabolismo , Perda Auditiva Neurossensorial/fisiopatologia , Perda Auditiva Neurossensorial/prevenção & controle , Ferro da Dieta/uso terapêutico , Masculino , Neurônios , Gravidez , Distribuição Aleatória , Transmissão Sináptica , Desmame
5.
Nutr Neurosci ; 17(1): 37-47, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23602121

RESUMO

OBJECTIVES: It is well known that postnatal/early childhood iron deficiency (ID) anaemia (IDA) adversely affects infants' cognitive development and neurophysiology. However, the effects of IDA during gestation and lactation on the offspring are largely unknown. To address this health issue, the impact of mild IDA during gestation and lactation on the offsprings' neural maturation was studied in the guinea pig, using auditory brainstem responses (ABRs) latencies and amplitudes. METHODS: Female guinea pigs (n = 10/group) were fed an iron sufficient (ISD) or deficient diet (IDD) (144 and 11.7 mg iron/kg) during the gestation and lactation periods. From postnatal day (PNd) 9 onward, the ISD was given to both groups of weaned offspring. The offsprings' ABRs were collected on PNd24 using a broad range of stimulus intensities in response to 2, 4, 8, 16, and 32 kHz tone pips. RESULTS: Although the IDA siblings (n = 8) did not differ in brainstem transmission times (BTTs) compared to the IS siblings (n = 8), they showed significant delayed peak I latency at 100 and 80 dB, respectively. Additionally, significantly higher ABR wave amplitudes were observed in the IDA female offspring between 35 and 50 dB (4 kHz), a phenomenon suggestive of a neural hyperactivity (hyperacusis). DISCUSSION: In support to our previous findings, the present results indicate that a mild IDA during gestation and lactation can have detrimental effects on early development of the offsprings' hearing and nervous systems, particularly on neural synchrony and auditory nerve conduction velocity, but not on BTT.


Assuntos
Anemia Ferropriva/fisiopatologia , Nervo Coclear/fisiopatologia , Potenciais Evocados Auditivos do Tronco Encefálico , Lactação , Complicações Hematológicas na Gravidez , Animais , Tronco Encefálico/fisiopatologia , Dieta , Feminino , Cobaias , Ferro da Dieta/administração & dosagem , Modelos Animais , Gravidez
6.
Curr Drug Targets ; 24(3): 212-224, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36173074

RESUMO

BACKGROUND: Epilepsy is a neurological disease affected by an imbalance of inhibitory and excitatory signaling in the brain. INTRODUCTION: In this disease, the targets are active in pathophysiology and thus can be used as a focus for pharmacological treatment. METHODS: Several studies demonstrated the antiepileptic effect of drugs acting on the following targets: N-methyl-D-aspartate (NMDA), alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor, voltage-gated calcium channel (Cav), Gamma aminobutyric acid transporter type 1 (GAT1), voltage-gated sodium channels (Nav), voltage-gated potassium channel of the Q subfamily (KCNQ) and Gamma aminobutyric acid type A (GABAA) receiver. RESULTS: These studies highlight the importance of molecular docking. CONCLUSION: Quantitative Structure-Activity Relationship (QSAR) and computer aided drug design (CADD) in predicting of possible pharmacological activities of these targets.


Assuntos
Epilepsia , Humanos , Simulação de Acoplamento Molecular , Epilepsia/tratamento farmacológico , Receptores de AMPA/fisiologia , Anticonvulsivantes/farmacologia , Anticonvulsivantes/uso terapêutico , Ácido gama-Aminobutírico/uso terapêutico
7.
J Nutr ; 141(7): 1390-5, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21613451

RESUMO

Iron deficiency (ID) anemia (IDA) adversely affects different aspects of the nervous system such as myelinogenesis, neurotransmitters synthesis, brain myelin composition, and brain fatty acid and eicosanoid metabolism. Infant neurophysiological outcome in response to maternal IDA is underexplored, especially mild to moderate maternal IDA. Furthermore, most human research has focused on childhood ID rather than prenatal or neonatal ID. Thus, our study evaluated the consequences of mild maternal IDA during pregnancy and lactation on the offsprings' auditory function using the auditory brainstem response (ABR). This technique provides objective measures of auditory acuity, neural transmission times along the peripheral and brainstem portions of the auditory pathway, and postnatal brain maturation. Female guinea pigs (n = 10/group) were fed an iron sufficient diet (ISD) or an iron deficient diet (IDD) (144 and 11.7 mg iron/kg) during their acclimation, gestation, and lactation periods. From postnatal d (PNd) 9 onward, the ISD was given to all weaned offspring. ABR were collected from the offspring on PNd24 using a broad range of stimulus intensities in response to 2, 4, 8, 16, and 32 kHz tone pips. IDA siblings (n = 4), [corrected] compared with the IS siblings (n = 5), had significantly elevated ABR thresholds (hearing loss) in response to all tone pips. These physiological disturbances were primarily due to a sensorineural hearing loss, as revealed by the ABR's latency-intensity curves. These results indicate that mild maternal IDA during gestation and lactation altered the hearing and nervous system development of the young offspring.


Assuntos
Anemia Ferropriva/sangue , Anemia Ferropriva/complicações , Potenciais Evocados Auditivos do Tronco Encefálico/fisiologia , Lactação/sangue , Complicações Hematológicas na Gravidez/sangue , Efeitos Tardios da Exposição Pré-Natal/fisiopatologia , Animais , Encéfalo/crescimento & desenvolvimento , Modelos Animais de Doenças , Feminino , Cobaias , Transtornos da Audição/etiologia , Transtornos da Audição/fisiopatologia , Humanos , Masculino , Gravidez
8.
Diabet Med ; 28(1): 100-8, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21166851

RESUMO

AIMS: To compare the renal effects of low- vs. high-dose atorvastatin in patients with Type 2 diabetes mellitus and optimally managed early renal disease. METHODS: We compared the 2-year progression of nephropathy in a double-blind randomized controlled trial of atorvastatin 80 mg/day (n = 60) vs. 10 mg/day (n = 59) in patients with Type 2 diabetes with microalbuminuria or proteinuria [mean (sd): age 64 years (10 years); HbA(1c) 7.7% (1.3%), 61 mmol/mol (10 mmol/mol); blood pressure 131/73 mmHg; renin-angiotensin system blocker use > 80%; dual blockade > 67%] recruited from diabetes clinics in Greater Manchester. RESULTS: Over (mean) 2.1 years of follow-up, the Modification of Diet in Renal Disease estimated glomerular filtration rate declined by 3 ml min(-1) 1.73 m(-2) in the combined group. The mean (95% CI) between-group difference during follow-up was not significant [2.2 ml min(-1) 1.73 m(-2) (-1.1 to 5.4 ml min(-1) 1.73: m(-2) ), P = 0.20] after adjusting for baseline differences in renal function; positive difference favours 80 mg dose. Similarly, there was no significant difference in creatinine clearance by Cockcroft and Gault [2.5 ml/min (-2.4 to 7.3 ml/min), P = 0.32]; serum creatinine/24-h urine collections [4.0 ml/min (-4.8 to 12.7 ml/min), P = 0.38]; cystatin C (P = 0.69); or 24-h urine protein or albumin excretion (P = 0.92; P = 0.93). We recorded no significant between-group differences in deaths or adverse events. CONCLUSIONS: In patients with Type 2 diabetes with early renal disease, we found no statistical difference in renal function between those taking high- or low-dose atorvastatin over 2 years. We cannot exclude a beneficial effect of < 1.6 ml min(-1) 1.73 m(-2) year(-1) on Modification of Diet in Renal Disease estimated glomerular filtration rate, or if blood pressure management or if renin-angiotensin system blocker use had not been optimized.


Assuntos
Anticolesterolemiantes/administração & dosagem , Diabetes Mellitus Tipo 2/tratamento farmacológico , Nefropatias Diabéticas/tratamento farmacológico , Ácidos Heptanoicos/administração & dosagem , Rim/efeitos dos fármacos , Pirróis/administração & dosagem , Albuminúria/metabolismo , Atorvastatina , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/metabolismo , Nefropatias Diabéticas/induzido quimicamente , Nefropatias Diabéticas/metabolismo , Método Duplo-Cego , Esquema de Medicação , Feminino , Taxa de Filtração Glomerular , Humanos , Rim/metabolismo , Falência Renal Crônica/induzido quimicamente , Falência Renal Crônica/metabolismo , Masculino , Pessoa de Meia-Idade , Placebos , Resultado do Tratamento , Reino Unido
9.
Can J Diet Pract Res ; 72(2): 76, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21645426

RESUMO

PURPOSE: The dietary nutrients iron and long-chain polyunsaturated fatty acids are believed to play an important role in early brain development. We investigated the relationship between pregnant women's iron and docosahexaenoic acid (DHA) status and their infants' cognitive performance at age six months. METHODS: Blood iron and DHA status were analyzed in pregnant women at 28 to 32 weeks of gestation. The women's dietary habits, sociodemographic background, and cognitive performance were assessed using questionnaires. At age six months, infants' blood hemoglobin was analyzed, feeding practices assessed, and weight, length, and head circumference recorded. Each infant's cognitive performance was assessed using the Brunet-Lézine Scale of Psychomotor Development of Early Childhood and the Bayley Scales of Infant Development. Sixty-three mother-infant dyads completed the study. RESULTS: During pregnancy, 9.5% of pregnant women were anemic, 34.9% had low iron stores, and 3.2% suffered from iron deficiency anemia. The DHA represented 4.36% and 2.15% in erythrocyte and plasma total fatty acids, respectively. These levels were considered adequate. No significant relationship was observed between gestational iron or DHA status and infants' cognitive performance. CONCLUSIONS: In this small group of infants born to mothers with relatively good feeding practices and a privileged socioeconomic background, cognitive testing with the instruments above was not associated with maternal iron and DHA levels at age six months.


Assuntos
Cognição , Ácidos Docosa-Hexaenoicos/sangue , Ferro/sangue , Fenômenos Fisiológicos da Nutrição Materna , Estado Nutricional , Adulto , Desenvolvimento Infantil , Feminino , Desenvolvimento Fetal , Humanos , Lactente , Masculino , Gravidez , Adulto Jovem
10.
HCA Healthc J Med ; 2(5): 361-365, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-37425123

RESUMO

Background: Florida law defines emergency treatment orders (ETOs) as an immediate administration of psychotropic medications to a person to expeditiously treat symptoms that may present an immediate danger to the safety of the person or others.1 There is currently little information on who receives ETOs. In this study, we aim to explore correlations between patients' demographics and administering ETOs in order to understand this cohort, which could allow for improved services and alternative interventions. Methods: This retrospective study examined data from 1,460 adult patients who were admitted to an acute inpatient psychiatric unit from January 2015 to December 2017 and who received at least one ETO during their hospital admission. Results: Results revealed that younger patients (18-25 years) were at increased risk of receiving more than one ETO (p=0.039) than patients who were 26 and older. Patients with an elevated body mass index (BMI) (25 kg/m2 or more) also had a significantly increased likelihood of being administered more ETOs (≥4 ETOs) than patients with a lower BMI (defined as less than 25 kg/m2 [p=0.037]). Moreover, patients with a length of stay (LOS) of more than 14 days were more likely to receive more ETOs compared to patients with LOS less than or equal to 14 days (p<0.001). Lastly, patients with a neurocognitive disorder and/or within the schizophrenia spectrum or other psychotic disorders were more likely to receive ETOs (p<0.001) than patients with other diagnoses. Conclusion: There are some correlations in administering ETOs in that younger patients with an elevated BMI, longer LOS and certain diagnoses receive more ETOs. The reason for these findings is not clear. Therefore, prospective studies should be conducted in order to analyze these correlations.

11.
J Exp Med ; 193(2): 239-46, 2001 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-11208864

RESUMO

Although the essential role of tumor necrosis factor (TNF) in the control of intracellular bacterial infection is well established, it is uncertain whether the related cytokines lymphotoxin-alpha (LTalpha3) and lymphotoxin-beta (LTbeta) have independent roles in this process. Using C57Bl/6 mice in which the genes for these cytokines have been disrupted, we have examined the relative contribution of secreted LTalpha3 and membrane-bound LTbeta in the host response to aerosol Mycobacterium tuberculosis infection. To overcome the lack of peripheral lymph nodes in LTalpha-/- and LTbeta-/- mice, bone marrow chimeric mice were constructed. LT-/- chimeras, which lack both secreted LTalpha3 and membrane-bound LTbeta (LT1beta2 and LT2beta1), were highly susceptible and succumbed 5 wk after infection. LTbeta-/- chimeras, which lack only the membrane-bound LTbeta, controlled the infection in a comparable manner to wild-type (WT) chimeric mice. T cell responses to mycobacterial antigens and macrophage responses in LTalpha-/- chimeras were equivalent to those of WT chimeras, but in LTalpha-/- chimeras, granuloma formation was abnormal. LTalpha-/- chimeras recruited normal numbers of T cells into their lungs, but the lymphocytes were restricted to perivascular and peribronchial areas and were not colocated with macrophages in granulomas. Therefore, LTalpha3is essential for the control of pulmonary tuberculosis, and its critical role lies not in the activation of T cells and macrophages per se but in the local organization of the granulomatous response.


Assuntos
Linfotoxina-alfa/metabolismo , Tuberculose Pulmonar/imunologia , Animais , Quimera , Granuloma/imunologia , Granuloma/patologia , Linfotoxina-alfa/genética , Linfotoxina-beta , Macrófagos/imunologia , Proteínas de Membrana/genética , Proteínas de Membrana/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Linfócitos T/imunologia , Tuberculose Pulmonar/patologia , Fator de Necrose Tumoral alfa/biossíntese , Fator de Necrose Tumoral alfa/genética
12.
Diabetologia ; 52(2): 218-25, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18972097

RESUMO

AIMS/HYPOTHESIS: Controversy surrounds whether the ratio of apolipoprotein B (ApoB) to apolipoprotein A-I (ApoA-I) is the best lipoprotein discriminator of CHD risk in non-diabetic populations, but the issue has never been investigated in type 2 diabetes. METHODS: In 2,627 participants without known vascular disease in the Collaborative Atorvastatin Diabetes Study, ApoB, ApoA-I, LDL-cholesterol (LDLC) and HDL-cholesterol (HDLC) were assayed at baseline. RESULTS: There were 108 CHD and 59 stroke endpoints over 3.9 years. The ApoB:A-I ratio at baseline was the lipoprotein variable most closely predicting CHD risk both by comparison of the hazard ratio for a 1 SD change or tertiles of frequency distribution. The areas under the receiver-operator curve for the ApoB:ApoA-I and the LDLC to HDLC [corrected] ratios, although not significantly different from each other, were greater (p = 0.0005 and p = 0.0125 respectively) than that of non-HDLC:HDLC. The 27% decrease in the ApoB:ApoA-I ratio on atorvastatin predicted a 32% (95% CI 5.4-51.2%) risk reduction in CHD, close to the 36% decrease observed. Neither the ApoB:ApoA-I nor any other lipoprotein concentration or ratio predicted the stroke outcome. CONCLUSIONS/INTERPRETATION: Overall, the ApoB:ApoA-I ratio improved on the non-HDLC:HDLC ratio in predicting CHD, but, depending on the assessment chosen, its superiority over LDLC:HDLC may be marginal. The statin-induced decrease in stroke risk may not be lipoprotein mediated. TRIAL REGISTRATION: ClinicalTrials.gov NCT00327418. FUNDING: The study was supported by unrestricted grants from Diabetes UK, the Department of Health and Pfizer to the University of Manchester and to University College, London.


Assuntos
Apolipoproteínas/sangue , Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Angiopatias Diabéticas/epidemiologia , Ácidos Heptanoicos/uso terapêutico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Pirróis/uso terapêutico , Adulto , Idoso , Apolipoproteína A-I/sangue , Atorvastatina , Biomarcadores/sangue , Pressão Sanguínea/efeitos dos fármacos , Método Duplo-Cego , Feminino , Frequência Cardíaca , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/epidemiologia , Fatores de Risco , Triglicerídeos/sangue
13.
Thorax ; 64(11): 926-31, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19574243

RESUMO

BACKGROUND: Pseudomonas aeruginosa is the most common bacterial pathogen in patients with cystic fibrosis (CF). Current infection control guidelines aim to prevent transmission via contact and respiratory droplet routes and do not consider the possibility of airborne transmission. It was hypothesised that subjects with CF produce viable respirable bacterial aerosols with coughing. METHODS: A cross-sectional study was undertaken of 15 children and 13 adults with CF, 26 chronically infected with P aeruginosa. A cough aerosol sampling system enabled fractioning of respiratory particles of different sizes and culture of viable Gram-negative non-fermentative bacteria. Cough aerosols were collected during 5 min of voluntary coughing and during a sputum induction procedure when tolerated. Standardised quantitative culture and genotyping techniques were used. RESULTS: P aeruginosa was isolated in cough aerosols of 25 subjects (89%), 22 of whom produced sputum samples. P aeruginosa from sputum and paired cough aerosols were indistinguishable by molecular typing. In four cases the same genotype was isolated from ambient room air. Approximately 70% of viable aerosols collected during voluntary coughing were of particles

Assuntos
Tosse/microbiologia , Fibrose Cística/microbiologia , Bactérias Gram-Negativas/isolamento & purificação , Infecções por Bactérias Gram-Negativas/microbiologia , Adolescente , Adulto , Criança , Doença Crônica , Estudos Transversais , Feminino , Volume Expiratório Forçado , Infecções por Bactérias Gram-Negativas/transmissão , Humanos , Exposição por Inalação , Masculino , Pessoa de Meia-Idade , Escarro/microbiologia , Adulto Jovem
14.
J Nutr ; 139(9): 1653-9, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19640965

RESUMO

Iron deficiency (ID) is the most prevalent worldwide nutritional deficiency. Groups at risk of developing ID anemia are infants and pregnant women, even in industrialized countries. Our goal in this study was to evaluate the long-term consequences of maternal ID on the offspring's fatty acid and eicosanoid metabolism, behavior, and spatial memory. Female guinea pigs consumed iron-sufficient (IS) and -deficient (ID) diets for 14 d before mating and throughout pregnancy and lactation. Dietary iron restriction resulted in ID in pregnant females. On postnatal d 9, all offspring (ID and IS) were weaned to the IS diet and at 42 d, all offspring were iron replete. Locomotion was tested in pups on postnatal d 24 and 40 and spatial memory from d 25 to 40. Pups from the ID group were significantly more active in the open field at both times of testing, whereas spatial memory, tested in a Morris water maze, was comparable in both groups. On postnatal d 42, liver, RBC, and brain fatty acid composition were measured. Dihomogammalinolenic [20:3(n-6)], docosapentaenoic [22:5(n-3)], and docosahexaenoic [22:6(n-3)] acid contents were significantly higher in brain phospholipids of offspring born to ID dams. Prostaglandin E(2) and F(2alpha) concentrations were also significantly higher in brains of offspring born to ID dams. This demonstrates that moderate ID during gestation and lactation results in alterations of brain fatty acid and eicosanoid metabolism and perturbation in behavior in adult offspring.


Assuntos
Anemia Ferropriva/metabolismo , Encéfalo/metabolismo , Ácidos Graxos/metabolismo , Deficiências de Ferro , Ferro da Dieta/metabolismo , Locomoção/fisiologia , Efeitos Tardios da Exposição Pré-Natal/metabolismo , Animais , Comportamento Animal , Dieta , Eritrócitos/metabolismo , Ácidos Graxos Ômega-3/metabolismo , Feminino , Cobaias , Ferro/metabolismo , Fígado/metabolismo , Masculino , Aprendizagem em Labirinto , Memória , Fosfolipídeos/metabolismo , Gravidez , Prostaglandinas/metabolismo
16.
Artigo em Inglês | MEDLINE | ID: mdl-31422159

RESUMO

Previous studies showed that mild iron deficiency anaemia (IDA) induced by feeding an iron deficient (ID) diet to female guinea pigs during gestation and lactation to alters the auditory functions of the offspring when corn oil is the only source of dietary lipids. Conversely, feeding an ID diet with a dietary fatty acid composition similar to that of typical human western diets induced minor impairments. Since tissue fatty acid metabolism is affected by dietary iron, the current study measured the impacts of these ID diets (ID-corn and ID-west) compared to the corresponding iron-sufficient control diets (IS-corn and IS-west) on encephalum fatty acid metabolism in the offspring at post-natal day 24. IDA induced by the ID-corn diet resulted in significant increases in encephalum n-6 PUFA content, but IDA induced by the ID-west diet had little impact on fatty acid profiles compared to the IS-west group. Brain COX II protein expression and FADS2 mRNA expression were statistically unaffected in both experiments, but encephalum PGE2 concentrations were significantly reduced in ID-west pups. These results suggest IDA studies during prenatal development should consider dietary lipid compositions.


Assuntos
Cérebro/metabolismo , Gorduras na Dieta , Eicosanoides/metabolismo , Deficiências de Ferro , Ferro da Dieta , Lactação/sangue , Anemia Ferropriva/metabolismo , Animais , Animais Recém-Nascidos , Dieta , Feminino , Cobaias , Ferro/sangue , Masculino , Fenômenos Fisiológicos da Nutrição , Gravidez , Efeitos Tardios da Exposição Pré-Natal
17.
Oxid Med Cell Longev ; 2019: 6587150, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30881596

RESUMO

The term neglected diseases refers to a group of infections caused by various classes of pathogens, including protozoa, viruses, bacteria, and helminths, most often affecting impoverished populations without adequate sanitation living in close contact with infectious vectors and domestic animals. The fact that these diseases were historically not considered priorities for pharmaceutical companies made the available treatments options obsolete, precarious, outdated, and in some cases nonexistent. The use of plants for medicinal, religious, and cosmetic purposes has a history dating back to the emergence of humanity. One of the principal fractions of chemical substances found in plants are essential oils (EOs). EOs consist of a mixture of volatile and hydrophobic secondary metabolites with marked odors, composed primarily of terpenes and phenylpropanoids. They have great commercial value and were widely used in traditional medicine, by phytotherapy practitioners, and in public health services for the treatment of several conditions, including neglected diseases. In addition to the recognized cytoprotective and antioxidative activities of many of these compounds, larvicidal, insecticidal, and antiparasitic activities have been associated with the induction of oxidative stress in parasites, increasing levels of nitric oxide in the infected host, reducing parasite resistance to reactive oxygen species, and increasing lipid peroxidation, ultimately leading to serious damage to cell membranes. The hydrophobicity of these compounds also allows them to cross the membranes of parasites as well as the blood-brain barrier, collaborating in combat at the second stage of several of these infections. Based on these considerations, the aim of this review was to present an update of the potential of EOs, their fractions, and their chemical constituents, against some neglected diseases, including American and African trypanosomiasis, leishmaniasis, and arboviruses, specially dengue.


Assuntos
Arbovírus/patogenicidade , Doenças Negligenciadas/terapia , Óleos Voláteis/uso terapêutico , Animais , Óleos Voláteis/farmacologia
18.
Can J Diet Pract Res ; 69(2): 101-5, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18538064

RESUMO

PURPOSE: To evaluate initiation and duration of breastfeeding of infants born to mothers who participated in the Early Childhood Initiative (ECI) program. Factors affecting the initiation and the early cessation of breastfeeding were also explored. METHODS: Twenty-five pregnant women participating in the ECI program completed this prospective study. At 36 weeks' gestation, a questionnaire was administered to assess socioeconomic status, intention to breastfeed and breastfeeding experience. When the infants were three and six months of age, feeding practices were assessed with a questionnaire. RESULTS: The breastfeeding initiation rate was 62.5%. At one and three months postpartum, exclusive breastfeeding rates were 39% and 4%, respectively. At six months, none of the women was exclusively breastfeeding. Primiparity, prenatal classes, having been breastfed and intention to breastfeed at 36 weeks' gestation were positively associated with breastfeeding initiation. Father's education, intention to breastfeed at 36 weeks' gestation, no water or formula given to the infant during hospitalization and higher maternal hemoglobin level at 36 weeks' gestation were positively associated with the duration of breastfeeding. CONCLUSIONS: The rate of initiation and duration of breastfeeding for ECI participants were low. To achieve successful interventions, it is important to target modifiable factors known to influence the initiation and duration of breastfeeding within this population.


Assuntos
Aleitamento Materno/epidemiologia , Ciências da Nutrição Infantil/educação , Fenômenos Fisiológicos da Nutrição do Lactente/fisiologia , Intenção , Cuidado Pré-Natal , Adolescente , Adulto , Aleitamento Materno/psicologia , Aleitamento Materno/estatística & dados numéricos , Escolaridade , Feminino , Promoção da Saúde , Humanos , Lactente , Recém-Nascido , Masculino , Comportamento Materno , Gravidez , Terceiro Trimestre da Gravidez , Estudos Prospectivos , Fatores Socioeconômicos , Inquéritos e Questionários , Fatores de Tempo
19.
Nutr Res ; 54: 69-79, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-29914669

RESUMO

Iron deficiency (ID) has been reported as a risk factor in the pathology of attention-deficit/hyperactivity disorder, although the mechanisms seem unclear. Previous results from our research group showed that guinea pig offspring born from ID dams were significantly more active in the Open Field Test than the controls. This behavior could potentially be associated to stress. We therefore hypothesized that maternal iron deficiency (MID) elevates the offspring serum cortisol, a biomarker of stress, during childhood and possibly at mature age. Twenty-four female guinea pigs were fed an iron-sufficient (IS) diet (114 mg/kg) or ID diet (11.7 mg/kg) during the gestation and lactation. Pups in both groups were weaned at postnatal day (PNd) 9 and given an IS diet. Hematocrit and serum cortisol levels were measured in dams at every trimester of gestation and in pups at PNd24 and 84. We found no impact of MID on dam's cortisol values. However, our findings indicate that MID increased cortisol secretion in the offspring during childhood, cortisol values being significantly elevated in ID than IS pups at PNd24 (P < .05). During adulthood (PNd84), both groups showed comparable cortisol levels. The elevated cortisol secretion observed in the offspring born from ID mothers during childhood may indicate increased stress reactivity which may have contributed to the higher level of activity when tested in a novel open environment. These findings suggest that MID can potentially act as internal stressor affecting the early development conceivably leading to increased stress levels in the children.


Assuntos
Anemia Ferropriva/complicações , Hidrocortisona/sangue , Deficiências de Ferro , Lactação , Efeitos Tardios da Exposição Pré-Natal/sangue , Fenômenos Fisiológicos da Nutrição Pré-Natal , Estresse Psicológico/etiologia , Fenômenos Fisiológicos da Nutrição Animal , Animais , Comportamento Animal , Dieta , Feminino , Cobaias , Ferro/administração & dosagem , Masculino , Gravidez , Efeitos Tardios da Exposição Pré-Natal/psicologia , Estresse Psicológico/sangue , Desmame
20.
Oxid Med Cell Longev ; 2018: 7912765, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30693065

RESUMO

Neurodegenerative diseases, such as Parkinson's and Alzheimer's, are understood as occurring through genetic, cellular, and multifactor pathophysiological mechanisms. Several natural products such as flavonoids have been reported in the literature for having the capacity to cross the blood-brain barrier and slow the progression of such diseases. The present article reports on in silico enzymatic target studies and natural products as inhibitors for the treatment of Parkinson's and Alzheimer's diseases. In this study we evaluated 39 flavonoids using prediction of molecular properties and in silico docking studies, while comparing against 7 standard reference compounds: 4 for Parkinson's and 3 for Alzheimer's. Osiris analysis revealed that most of the flavonoids presented no toxicity and good absorption parameters. The Parkinson's docking results using selected flavonoids as compared to the standards with four proteins revealed similar binding energies, indicating that the compounds 8-prenylnaringenin, europinidin, epicatechin gallate, homoeriodictyol, capensinidin, and rosinidin are potential leads with the necessary pharmacological and structural properties to be drug candidates. The Alzheimer's docking results suggested that seven of the 39 flavonoids studied, being those with the best molecular docking results, presenting no toxicity risks, and having good absorption rates (8-prenylnaringenin, europinidin, epicatechin gallate, homoeriodictyol, aspalathin, butin, and norartocarpetin) for the targets analyzed, are the flavonoids which possess the most adequate pharmacological profiles.


Assuntos
Doença de Alzheimer/tratamento farmacológico , Simulação por Computador , Flavonoides/uso terapêutico , Simulação de Acoplamento Molecular , Fármacos Neuroprotetores/uso terapêutico , Doença de Parkinson/tratamento farmacológico , Bases de Dados Factuais , Humanos , Modelos Moleculares , Conformação Proteica , Relação Quantitativa Estrutura-Atividade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA