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BACKGROUND: Social, familial, and physiological stressors may put maternal-infant bonding at risk. Therefore, it is plausible that the stressful conditions brought on by COVID-19 could influence maternal-infant bonding. This study aimed to elucidate the contribution of COVID-19-related experience to variance in maternal-infant bonding, beyond that of established risk factors and as moderated by social support. METHODS: This longitudinal, multicenter study examined the relationship of demographic and obstetric variables, social support, postpartum depression, as well as COVID-19-related fear, exposure, and subjective difficulty with mother-infant bonding six months following birth. Participants (N = 246) were women who delivered during the pandemics' strict lockdown period and were recruited 10 weeks after a liveborn delivery and followed up six months later. RESULTS: Relationship between fear of COVID-19 and maternal-infant bonding was moderated by social support: Amongst mothers with high levels of social support, fear of COVID-19 negatively predicted bonding. DISCUSSION: Results indicate that social support, while overall a protective factor for mother-infant bonding, may lose its buffering effect when fear of COVID-19 is high. This relationship was maintained even when early bonding experiences such as forced separation and the risk incurred by postpartum depression were accounted for. Implications for providers are discussed.
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BACKGROUND: We conducted exploratory analyses to identify distinct trajectories of estimated glomerular filtration rate (eGFR) and their relationship with hyperfiltration, subsequent rapid eGFR decline, and albuminuria in participants with youth-onset type 2 diabetes enrolled in the Treatment Options for type 2 Diabetes in Adolescents and Youth (TODAY) study. METHODS: Annual serum creatinine, cystatin C, urine albumin, and creatinine measurements were obtained from 377 participants followed for ≥ 10 years. Albuminuria and eGFR were calculated. Hyperfiltration peak is the greatest eGFR inflection point during follow-up. Latent class modeling was applied to identify distinct eGFR trajectories. RESULTS: At baseline, participants' mean age was 14 years, type 2 diabetes duration was 6 months, mean HbA1c was 6%, and mean eGFR was 120 ml/min/1.73 m2. Five eGFR trajectories associated with different rates of albuminuria were identified, including a "progressive increasing eGFR" group (10%), three "stable eGFR" groups with varying starting mean eGFR, and an "eGFR steady decline" group (1%). Participants who exhibited the greatest peak eGFR also had the highest levels of elevated albuminuria at year 10. This group membership was characterized by a greater proportion of female and Hispanic participants. CONCLUSIONS: Distinct eGFR trajectories that associate with albuminuria risk were identified, with the eGFR trajectory characterized by increasing eGFR over time associating with the highest level of albuminuria. These descriptive data support the current recommendations to estimate GFR annually in young persons with type 2 diabetes and provide insight into eGFR-related factors which may contribute to predictive risk strategies for kidney disease therapies in youth with type 2 diabetes. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT00081328, date registered 2002. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Diabetes Mellitus Tipo 2 , Nefropatias Diabéticas , Humanos , Feminino , Adolescente , Diabetes Mellitus Tipo 2/complicações , Estudos de Coortes , Taxa de Filtração Glomerular , Nefropatias Diabéticas/diagnóstico , Nefropatias Diabéticas/epidemiologia , Nefropatias Diabéticas/etiologia , Albuminúria/etiologia , Albuminúria/complicações , Seguimentos , Fatores de Risco , Progressão da DoençaRESUMO
We examined the impact of adding sufentanil during anaesthesia induction with propofol on bispectral index values in elderly patients (≥ 65 years). Patients were randomly assigned to receive a target-controlled sufentanil infusion (effect-site concentration of 0.3 ng.ml-1 ) or matching placebo, followed by a target-controlled propofol induction (initial effect-site concentration of 0.5 µg.ml-1 ; step-wise increase of 0.5 µg.ml-1 ) until loss of consciousness defined as an Observer's Assessment of Alertness/Sedation score < 2. Seventy-one patients (sufentanil 35, placebo 36) completed the study. Mean (SD) age was 72.3 (5.8) years; 41% were women. At loss of consciousness, mean (SD) bispectral index value was 75.0 (8.6) with sufentanil and 70.0 (8.0) with placebo; mean difference -5.0 (95% confidence interval -8.9 to -1.1), p = 0.013. Post-hoc analyses suggest that the difference was significant in men only (mean difference -7.3 (-11.8 to -2.6), p = 0.003). Sufentanil co-induction with propofol results in higher bispectral index values at loss of consciousness in elderly patients.
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Anestesia Intravenosa/métodos , Anestésicos Intravenosos , Monitores de Consciência , Sufentanil , Idoso , Idoso de 80 Anos ou mais , Método Duplo-Cego , Feminino , Humanos , Masculino , Propofol , Caracteres Sexuais , InconsciênciaRESUMO
Protein geranylgeranylation is a type of post-translational modification that aids in the localization of proteins to the plasma member where they elicit cellular signals. To better understand the isoprenoid requirements of GGTase-I, a series of aryl-modified geranylgeranyl diphosphate analogs were synthesized and screened against mammalian GGTase-I. Of our seven-member library of compounds, six analogs proved to be substrates of GGTase-I, with 6d having a krel=1.93 when compared to GGPP (krel=1.0).
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Alquil e Aril Transferases/antagonistas & inibidores , Inibidores Enzimáticos/farmacologia , Fosfatos de Poli-Isoprenil/farmacologia , Alquil e Aril Transferases/metabolismo , Animais , Relação Dose-Resposta a Droga , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Humanos , Estrutura Molecular , Fosfatos de Poli-Isoprenil/síntese química , Fosfatos de Poli-Isoprenil/química , Relação Estrutura-AtividadeRESUMO
Protein prenylation is a type of post-translational modification that aids certain proteins in localizing to the plasma member where they activate cell signaling. To better understand the isoprenoid requirements and differences of FTase and GGTase-I, a series of saturated geranylgeranyl diphosphate analogs were synthesized and screened against both mammalian FTase and GGTase-I. Of our library of compounds, several analogs proved to be substrates of GGTase-I, with 11d having a krel=0.95 when compared to GGPP (krel=1.0).
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Alquil e Aril Transferases/antagonistas & inibidores , Fosfatos de Poli-Isoprenil/síntese química , Fosfatos de Poli-Isoprenil/farmacologia , Alquil e Aril Transferases/metabolismo , Relação Dose-Resposta a Droga , Humanos , Estrutura Molecular , Fosfatos de Poli-Isoprenil/química , Relação Estrutura-AtividadeRESUMO
OBJECTIVE: To assess the effects of late small-for-gestational-age (SGA) birth and late prematurity on cognitive outcomes and structural changes in the central nervous system at primary school age, using a novel approach to examine changes in neuronal integrity of the retina. METHODS: We conducted a cross-sectional study of 347 children aged 6-13 years, including in the analysis only infants born after 34 weeks' gestation. We recorded all perinatal outcomes through a survey of parents. Neuronal damage was evaluated using optical coherence tomography of the retina. In a subgroup of 112 children aged 6-8 years, visuospatial perception was evaluated with the Children's Bender Visual Motor Gestalt Test. RESULTS: The proportions of SGA and late preterm children were 11.8 and 6.3%, respectively. Prematurity and SGA were simultaneously present in five children. When compared with controls, SGA children showed significantly lower than average retinal nerve fiber layer (RNFL) thickness (94.1 vs 98.8 µm; P = 0.007) and an increased percentage of abnormal Bender scores (27.3 vs 6.2%; P = 0.017) (odds ratio 5.6 (95% CI, 1.2-26.8)). These differences increased when late SGA infants with a birth weight below the 3(rd) percentile were compared with SGA infants with a birth weight between the 3(rd) and 10(th) percentiles and with controls, for RNFL thickness (92.5 vs 94.6 and 98.8 µm, respectively; P = 0.021) and abnormal Bender tests (33.3 vs 25.0 and 6.2%, respectively; P = 0.036). However, no differences were found in retinal structure and visuomotor performance between late preterm and term infants. CONCLUSIONS: These data suggest that late SGA and late prematurity induce a distinct neuronal pattern of structural changes that persist at school age. Late-onset SGA infants are at increased risk for axonal loss in the retina and present specific visuomotor difficulties.
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Desenvolvimento Infantil , Transtornos Cognitivos/fisiopatologia , Recém-Nascido Prematuro , Recém-Nascido Pequeno para a Idade Gestacional , Nervo Óptico/fisiopatologia , Retina/fisiopatologia , Tomografia de Coerência Óptica , Adolescente , Criança , Transtornos Cognitivos/diagnóstico , Estudos Transversais , Feminino , Humanos , Masculino , Razão de Chances , Inquéritos e Questionários , Testes VisuaisRESUMO
AIMS: To examine the impact of pregnancy on microvascular and cardiovascular measures in women with youth-onset T2D. METHODS: Microvascular and cardiovascular measures were compared in in a cohort of 116 women who experienced a pregnancy of ≥ 20 weeks gestation and 291 women who did not among women in the Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY) study. RESULTS: Cox regression models adjusted for participant characteristics at baseline including age, race/ethnicity, household income, diabetes duration, HbA1c (>6%), and BMI, demonstrated those who experienced pregnancy had 2.76 (1.38-5.49; p = 0.004) fold increased risk of hyperfiltration (eGFR ≥ 135 ml/min/1.73 m2), compared to those without a pregnancy. No differences were observed in rates of retinopathy (48.9% vs. 41.1%) or neuropathy (23.3% vs. 16.3%) in women who experienced pregnancy vs. women who did not, respectively. In fully adjusted models, pregnancy did not impact changes in echocardiographic or arterial stiffness compared to changes in women who were never pregnant. CONCLUSIONS: These results indicate that pregnancy increases the risk of hyperfiltration in women with youth-onset T2D, but not other micro or macrovascular complications. The rates of vascular complications are very high in youth-onset T2D potentially obscuring micro- and macrovascular changes attributable to pregnancy. CLINICAL TRIAL INFORMATION: ClinicalTrials.gov numbers,NCT01364350andNCT02310724.
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Doenças Cardiovasculares , Diabetes Mellitus Tipo 2 , Adolescente , Feminino , Humanos , Gravidez , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/complicações , Diabetes Mellitus Tipo 2/complicações , Coração , Fatores de RiscoRESUMO
BACKGROUND: Pathophysiological changes due to obesity may complicate mechanical ventilation during general anaesthesia. The ideal ventilation strategy is expected to optimize gas exchange and pulmonary mechanics and to reduce the risk of respiratory complications. METHODS: Systematic search (databases, bibliographies, to March 2012, all languages) was performed for randomized trials testing intraoperative ventilation strategies in obese patients (BMI ≥ 30 kg m(-2)), and reporting on gas exchange, pulmonary mechanics, or pulmonary complications. Meta-analyses were performed when data from at least three studies or 100 patients could be combined. RESULTS: Thirteen studies (505 obese surgical patients) reported on a variety of ventilation strategies: pressure- or volume-controlled ventilation (PCV, VCV), various tidal volumes, and different PEEP or recruitment manoeuvres (RM), and combinations thereof. Definitions and reporting of endpoints were inconsistent. In five trials (182 patients), RM added to PEEP compared with PEEP alone improved intraoperative PaO2/FIO2 ratio [weighted mean difference (WMD), 16.2 kPa; 95% confidence interval (CI), 8.0-24.4] and increased respiratory system compliance (WMD, 14 ml cm H(2)O(-1); 95% CI, 8-20). Arterial pressure remained unchanged. In four trials (100 patients) comparing PCV with VCV, there was no difference in PaO2/FIO2 ratio, tidal volume, or arterial pressure. Comparison of further ventilation strategies or combination of other outcomes was not feasible. Data on postoperative complications were seldom reported. CONCLUSIONS: The ideal intraoperative ventilation strategy in obese patients remains obscure. There is some evidence that RM added to PEEP compared with PEEP alone improves intraoperative oxygenation and compliance without adverse effects. There is no evidence of any difference between PCV and VCV.
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Obesidade/terapia , Respiração Artificial/métodos , Pressão do Ar , Cirurgia Bariátrica , Humanos , Ventilação com Pressão Positiva Intermitente , Medidas de Volume Pulmonar , Respiração com Pressão Positiva , Respiração por Pressão Positiva Intrínseca , Viés de Publicação , Troca Gasosa Pulmonar/fisiologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Procedimentos Cirúrgicos OperatóriosRESUMO
BACKGROUND: Intravenous lidocaine is increasingly used in surgical patients. As it has neuromuscular blocking effects, we tested the impact of an intravenous lidocaine infusion on the time course of a rocuronium-induced neuromuscular block. METHODS: Fifty-two adults undergoing surgery were randomly allocated to intravenous lidocaine 1.5 mg/kg followed by a continuous infusion of 2 mg/kg/h or physiological saline (control) throughout surgery. Anaesthesia was induced and maintained with a target-controlled propofol infusion and sufentanil. After loss of consciousness, rocuronium 0.6 mg/kg was given. Neuromuscular transmission was measured using train-of-four (TOF)-watch SX (Organon, Swords Co., Dublin, Ireland) acceleromyography. RESULTS: Onset time (to 95% depression of first twitch) was on average 113.9 s (standard deviation 35.3) with lidocaine and 119.5 s (44.9) with saline (P = 0.618). Total recovery time (TOF ratio 0.9) was on average 58.1 min (15.1) with lidocaine and 54.3 min (16.9) with saline (P = 0.394). Clinical duration (until first twitch has recovered to 25%) was on average 33.3 min (7.2) with lidocaine and 30.6 min (8.1) with saline (P = 0.21). Recovery index (time between 25% and 75% recovery of the first twitch) was on average 11.5 min (5.0) with lidocaine and 10.6 min (4.1) with saline (P = 0.458). Recovery time (between 25% recovery of the first twitch and TOF ratio 0.9) was on average 24.8 min (9.3) with lidocaine and 23.2 min (9.2) with saline (P = 0.541). CONCLUSION: A continuous intravenous infusion of lidocaine has no impact on the time course of the neuromuscular blockade induced by a standard intubation dose of rocuronium.
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Androstanóis/farmacologia , Anestésicos Locais/farmacologia , Lidocaína/farmacologia , Bloqueio Neuromuscular , Fármacos Neuromusculares não Despolarizantes/farmacologia , Adulto , Feminino , Humanos , Injeções Intravenosas , Masculino , Pessoa de Meia-Idade , RocurônioRESUMO
This is a multicenter prospective observational study, aimed to evaluate the relations between Fear of COVID-19 and postpartum depression (PPD) symptom, that included a cohort of women who delivered during COVID-19 lockdown between 03 and 05/2020. Participants were approached after delivery and asked to complete an online questionnaire. Data was verified with each center's perinatal database. The validated Fear of COVID-19 Scale was in use. PPD was evaluated using the EPDS questionnaire as a categorical (≥13) and as a continuous scale. Pre-existing maternal disability was defined as any prior physiological/psychological chronic health condition. Continuous medical supervision or stress contributing complications at birth included pregnancy and labor related complications. Regression analysis and ROC statistics were utilized to evaluate associations and control for confounders. Overall, 421 women completed the questionnaires. Of them, 53(12.6%) had a high EPDS score. Fear of COVID-19 was positively correlated with PPD symptoms (r = 0.35,p = 0.000), ROC-AUC 0.73, 95% CI 0.65-0.81, p = 0.000. Following adjustment to confounders (maternal age, nulliparity, ethnicity, marital status, financial difficulties, maternal disability, accessibility to medical services, and continuous medical supervision (, the most important factor that correlated with depression symptoms was maternal disability (aOR 4.61,95% CI 1.96-10.82) followed by Fear of COVID-19 (aOR 1.11,95% CI 1.05-1.17). High accessibility to medical services during pregnancy (aOR 0.62, 95%CI 0.45-0.84) was protective for PPD symptoms. To conclude, during the COVID-19 pandemic, maternal disability and Fear of COVID-19 are positively associated with a high EPDS score. High medical accessibility during pregnancy was found as a protective factor for PPD.
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COVID-19 , Depressão Pós-Parto , COVID-19/epidemiologia , Controle de Doenças Transmissíveis , Depressão Pós-Parto/epidemiologia , Depressão Pós-Parto/psicologia , Medo , Feminino , Humanos , Recém-Nascido , Pandemias , Gravidez , Prevalência , Fatores de Proteção , Fatores de RiscoRESUMO
BACKGROUND: A previously published study suggested that pre-treatment with magnesium sulphate (MgSO(4)) had no impact on the speed of onset of rocuronium-induced neuromuscular block. We set out to verify this assumption. METHODS: Eighty patients (18-60 years) were randomly allocated to MgSO(4) 60 mg/kg or placebo (saline). Study drugs were given intravenously for 15 min before induction of anaesthesia with propofol, sufentanil and rocuronium 0.6 mg/kg. Anaesthesia was maintained with a target-controlled propofol infusion. Neuromuscular transmission was measured using train-of-four (TOF)-Watch SX acceleromyography. RESULTS: Onset was analysed in 37 MgSO(4) and 38 saline patients, and recovery in 35 MgSO(4) and 37 saline patients. Onset time (to 95% depression of T1) was on average 77 [SD=18] s with MgSO(4) and 120 [48] s with saline (P<0.001). The total recovery time (DurTOF0.9) was on average 73.2 [22] min with MgSO(4) and 57.8 [14.2] min with saline (P<0.003). The clinical duration (Dur25%) was on average 44.7 [14] min with MgSO(4) and 33.2 [8.1] min with saline (P<0.0002). The recovery index (Dur25-75%) was on average 14.0 [6] min with MgSO(4) and 11.2 [5.2] min with saline (P<0.02). The recovery time (Dur25%TOF0.9) was on average 28.5 [11.7] min with MgSO(4) and 24.7 [8.4] min with saline (P=0.28). CONCLUSION: Magnesium sulphate given 15 min before propofol anaesthesia reduces the onset time of rocuronium by about 35% and prolongs the total recovery time by about 25%.
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Adjuvantes Anestésicos , Androstanóis , Sulfato de Magnésio , Bloqueio Neuromuscular , Fármacos Neuromusculares não Despolarizantes , Adjuvantes Anestésicos/efeitos adversos , Adolescente , Adulto , Androstanóis/efeitos adversos , Período de Recuperação da Anestesia , Anestesia Geral , Interpretação Estatística de Dados , Estimulação Elétrica , Determinação de Ponto Final , Feminino , Humanos , Injeções Intravenosas , Sulfato de Magnésio/efeitos adversos , Masculino , Pessoa de Meia-Idade , Miografia , Bloqueio Neuromuscular/efeitos adversos , Fármacos Neuromusculares não Despolarizantes/efeitos adversos , Pré-Medicação , Rocurônio , Fatores de Tempo , Adulto JovemRESUMO
BACKGROUND: Obesity and diabetes mellitus are directly implicated in many adverse health consequences in adults as well as in the offspring of obese and diabetic mothers. Hispanic Americans are particularly at risk for obesity, diabetes, and end-stage renal disease. Maternal obesity and/or diabetes through prenatal programming may alter the fetal epigenome increasing the risk of metabolic disease in their offspring. The aims of this study were to determine if maternal obesity or diabetes mellitus during pregnancy results in a change in infant methylation of CpG islands adjacent to targeted genes specific for obesity or diabetes disease pathways in a largely Hispanic population. METHODS: Methylation levels in the cord blood of 69 newborns were determined using the Illumina Infinium MethylationEPIC BeadChip. Over 850,000 different probe sites were analyzed to determine whether maternal obesity and/or diabetes mellitus directly attributed to differential methylation; epigenome-wide and regional analyses were performed for significant CpG sites. RESULTS: Following quality control, agranular leukocyte samples from 69 newborns (23 normal term (NT), 14 diabetes (DM), 23 obese (OB), 9 DM/OB) were analyzed for over 850,000 different probe sites. Contrasts between the NT, DM, OB, and DM/OB were considered. After correction for multiple testing, 15 CpGs showed differential methylation from the NT, associated with 10 differentially methylated genes between the diabetic and non-diabetic subgroups, CCDC110, KALRN, PAG1, GNRH1, SLC2A9, CSRP2BP, HIVEP1, RALGDS, DHX37, and SCNN1D. The effects of diabetes were partly mediated by the altered methylation of HOOK2, LCE3C, and TMEM63B. The effects of obesity were partly mediated by the differential methylation of LTF and DUSP22. CONCLUSIONS: The presented data highlights the associated altered methylation patterns potentially mediated by maternal diabetes and/or obesity. Larger studies are warranted to investigate the role of both the identified differentially methylated loci and the effects on newborn body composition and future health risk factors for metabolic disease. Additional future consideration should be targeted to the role of Hispanic inheritance. Potential future targeting of transgenerational propagation and developmental programming may reduce population obesity and diabetes risk.
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Metilação de DNA , Diabetes Gestacional/genética , Epigenômica/métodos , Sangue Fetal/química , Hispânico ou Latino/genética , Obesidade/genética , Adulto , Ilhas de CpG , Diabetes Gestacional/etnologia , Epigênese Genética , Feminino , Redes Reguladoras de Genes , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Humanos , Recém-Nascido , Idade Materna , Troca Materno-Fetal , Obesidade/etnologia , Gravidez , Estudos Prospectivos , Adulto JovemRESUMO
Intrathecal morphine without local anaesthetic is often added to a general anaesthetic to prevent pain after major surgery. Quantification of benefit and harm and assessment of dose-response are needed. We performed a meta-analysis of randomized trials testing intrathecal morphine alone (without local anaesthetic) in adults undergoing major surgery under general anaesthesia. Twenty-seven studies (15 cardiac-thoracic, nine abdominal, and three spine surgery) were included; 645 patients received intrathecal morphine (dose-range, 100-4000 microg). Pain intensity at rest was decreased by 2 cm on the 10 cm visual analogue scale up to 4 h after operation and by about 1 cm at 12 and 24 h. Pain intensity on movement was decreased by 2 cm at 12 and 24 h. Opioid requirement was decreased intraoperatively, and up to 48 h after operation. Morphine-sparing at 24 h was significantly greater after abdominal surgery {weighted mean difference, -24.2 mg [95% confidence interval (CI) -29.5 to -19.0]}, compared with cardiac-thoracic surgery [-9.7 mg (95% CI -17.6 to -1.80)]. The incidence of respiratory depression was increased with intrathecal morphine [odds ratio (OR) 7.86 (95% CI 1.54-40.3)], as was the incidence of pruritus [OR 3.85 (95% CI 2.40-6.15)]. There was no evidence of linear dose-responsiveness for any of the beneficial or harmful outcomes. In conclusion, intrathecal morphine decreases pain intensity at rest and on movement up to 24 h after major surgery. Morphine-sparing is more pronounced after abdominal than after cardiac-thoracic surgery. Respiratory depression remains a major safety concern.
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Analgésicos Opioides/administração & dosagem , Morfina/administração & dosagem , Dor Pós-Operatória/prevenção & controle , Analgésicos Opioides/efeitos adversos , Anestesia Geral , Anestésicos Locais , Relação Dose-Resposta a Droga , Esquema de Medicação , Humanos , Injeções Espinhais , Morfina/efeitos adversos , Medição da Dor/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto , Insuficiência Respiratória/induzido quimicamenteRESUMO
BACKGROUND: Bispectral (BIS) and state/response entropy (SE/RE) indices have been widely used to estimate depth of anaesthesia and sedation. In adults, independent of age, adequate and safe depth of anaesthesia for surgery is usually assumed when these indices are between 40 and 60. Since the EEG is changing with increasing age, we investigated the impact of advanced age on BIS, SE, and RE indices during induction. METHODS: BIS and SE/RE indices were recorded continuously in elderly (> or =65 yr) and young (< or =40 yr) surgical patients who received propofol until loss of consciousness (LOC) using stepwise increasing effect-site concentrations. LOC was defined as an observer assessment of alertness/sedation score <2, corresponding to the absence of response to mild prodding or shaking. RESULTS: We analysed 35 elderly [average age, 78 yr (range, 67-96)] and 34 young [35 (19-40)] patients. At LOC, all indices were significantly higher in elderly compared with young patients: BIS(LOC), median 70 (range, 58-91) vs 58 (40-70); SE(LOC), 71 (31-88) vs 55.5 (23-79); and RE(LOC), 79 (35-96) vs 59 (25-80) (P<0.001 for all comparisons). With all three monitors, only a minority of elderly patients lost consciousness within a 40-60 index range: two (5.7%) with BIS and RE each, and seven (20%) with SE. In young patients, the respective numbers were 20 (58.8%) for BIS, 13 (38.2%) for SE, and nine (26.5%) for RE. CONCLUSIONS: In adults undergoing propofol induction, BIS, SE, and RE indices at LOC are significantly affected by age.
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Anestésicos Intravenosos/farmacologia , Estado de Consciência/efeitos dos fármacos , Monitorização Intraoperatória/métodos , Propofol/farmacologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/fisiologia , Anestésicos Intravenosos/administração & dosagem , Esquema de Medicação , Eletroencefalografia/efeitos dos fármacos , Eletroencefalografia/instrumentação , Eletroencefalografia/métodos , Entropia , Feminino , Hemodinâmica/efeitos dos fármacos , Humanos , Infusões Intravenosas , Masculino , Propofol/administração & dosagem , Processamento de Sinais Assistido por Computador , Adulto JovemRESUMO
The spatiotemporal characteristics of ESCRT (Endosomal Sorting Complex Required for Transport)-mediated mammalian cytokinetic abscission have been studied in recent years using quantitative high-resolution light microscopy techniques. Here we describe how to apply spinning disk live cell imaging and structured illumination microscopy (SIM) to define the dynamics and structural organization of abscission and of proteins involved in abscission in a quantitative manner. We further provide a protocol to correlate the structural data, obtained by SIM, to the dynamic information obtained by live cell recordings.
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Citocinese/genética , Endossomos/ultraestrutura , Microscopia/métodos , Imagem Molecular/métodos , Complexos Endossomais de Distribuição Requeridos para Transporte/genética , Complexos Endossomais de Distribuição Requeridos para Transporte/ultraestrutura , Endossomos/genética , Células HeLa , HumanosRESUMO
A set of synthetic approaches was developed and applied to the synthesis of eight frame-shifted isoprenoid diphosphate analogues. These analogues were designed to increase or decrease the methylene units between the double bonds and/or the pyrophosphate moieties of the isoprenoid structure. Evaluation of mammalian GGTase-I and FTase revealed that small structural changes can result in substantial changes in substrate activity.
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Alquil e Aril Transferases/antagonistas & inibidores , Difosfatos/farmacologia , Inibidores Enzimáticos/farmacologia , Farnesiltranstransferase/antagonistas & inibidores , Terpenos/farmacologia , Alquil e Aril Transferases/metabolismo , Difosfatos/síntese química , Difosfatos/química , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/química , Farnesiltranstransferase/metabolismo , Estrutura Molecular , Terpenos/síntese química , Terpenos/químicaRESUMO
Objetivo: Comparar la presencia de poros en los tres tercios del conducto radicular luego de la obturación con cementos biocerámicos. Se trataron endodónticamente 20 premolares inferiores unirradiculares, de anatomía oval. Los mismos fueron divididos en dos grupos y se obturaron con dos cementos biocerámicos diferentes. Todas las muestras fueron analizadas con microtomografía de rayos X para comparar la presencia de poros en los tres tercios radiculares, clasificando los mismos en internos, externos y combinados. En las 20 piezas dentarias obturadas y analizadas se encontraron poros. La cantidad de poros detectados no presentó diferencias significativas mediante análisis estadísticos cuantitativos ni cualitativos. Los poros se presentaron más frecuentemente en el tercio cervical, independientemente del cemento sellador. Ambos grupos presentan una buena adaptación a nivel apical, siendo esto imprescindible para la longevidad y éxito del tratamiento endodóntico (AU)
Assuntos
Materiais Restauradores do Canal Radicular , Obturação do Canal Radicular/métodos , Tratamento do Canal Radicular/métodos , Materiais Biocompatíveis , Cerâmica , Microtomografia por Raio-X , Argentina , Faculdades de Odontologia , Interpretação Estatística de Dados , Adaptação Marginal Dentária , Estudos de Avaliação como AssuntoRESUMO
OBJECTIVE: The purpose of this study was to demonstrate the early and late outcomes of bidirectional cavopulmonary shunt (BCPS) as a definitive procedure for the functional single ventricular heart. METHOD: From September 1991 to December 1997, 34 patients underwent a BCPS procedure without a routine conversion to Fontan circulation. The additional source of pulmonary blood flow was left in all patients. Conversion was performed only when it was required for excessive cyanosis. RESULTS: The hospital mortality rate was 8.8% (3/34, 95% confidence limit; 1.9-23%) and the 5-year survival rate was 75% for a mean follow-up period of 33+/-22 months. Seven patients underwent a conversion procedure for remnant or recurrent cyanosis and deterioration of exercise tolerance. Four of these patients died after conversion to Fontan circulation. Twenty-five long-term survivors with BCPSs maintained an arterial oxygen saturation of 84+/-6.1%, and 52% of them had a normal exercise tolerance or mild limitation. No patients developed severe late complications other than recurrent cyanosis. CONCLUSION: Due to the high mortality after conversion to Fontan circulation in patients whose conditions had deteriorated, we could not demonstrate the clear superiority of long-term BCPS over the construction of Fontan circulation for management of the functional single ventricular heart. If deteriorated conditions were successfully managed in the late period, the outcome of long-term BCPS would have been better.
Assuntos
Derivação Cardíaca Direita/métodos , Cardiopatias Congênitas/cirurgia , Cuidados Paliativos/métodos , Circulação Pulmonar , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Cardiopatias Congênitas/mortalidade , Cardiopatias Congênitas/fisiopatologia , Ventrículos do Coração/anormalidades , Ventrículos do Coração/fisiopatologia , Ventrículos do Coração/cirurgia , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Análise de Sobrevida , Fatores de Tempo , Resultado do TratamentoRESUMO
Introducción: La provincia de Cienfuegos es autosuficiente para satisfacer su demanda transfusional actual. Sin embargo, esta situación podría modificarse por los efectos que sobre la asistencia sanitaria ejerce el envejecimiento poblacional. Objetivos: Identificar la relación entre donaciones y transfusiones de sangre en función de los cambios en la dinámica poblacional. Métodos: Estudio descriptivo transversal desarrollado mediante revisión documental. Se incluyó como variables el número de habitantes agrupados según la edad regulada en Cuba para donar sangre, la cantidad de donaciones y de pacientes transfundidos durante el periodo de estudio. se utilizó el coeficiente de correlación de Spearman ( ρ)para establecer el grado de relación entre ellas. Se calcularon tasas, porcientos y el cambio relativo entre años extremos de las series. Resultados: La composición de los grupos de edades de la población mostró preferencia hacia el envejecimiento con una disminución del 5 por ciento en el número de habitantes de 0 a 19 años junto a un incremento del doble de ese valor en los adultos mayores. Las donaciones decrecen en cerca del 8 por ciento, mientras que el número de pacientes transfundidos aumentan en el 33 por ciento. Se comprueba la existencia de correlaciones directas e inversas, estadísticamente significativas, entre los indicadores estudiados. Conclusiones: Los resultados de la investigación son sugerentes a una relación entre los indicadores de donaciones, transfusiones de sangre y los cambios en la estructura por edad de la población que, de mantenerse la tendencia actual, podrían conducir a periodos de escasez de sangre para transfusiones(AU)
Introduction: The province of Cienfuegos is self-sufficient to satisfy the actual transfusion demand. However, this situation could be modified due to the effects of population aging on health care service. Objective: To identify the relationship between donations and blood transfusions based on changes in population dynamics. Methods: Transversal descriptive study developed through documentary review. The number of inhabitants grouped according to the regulated age in Cuba to donate blood, the number of donations and transfused patients during the study period were included as variables, using the Spearman correlation coefficient ( ρ) to establish the degree of relationship between them. The rates, percent and relative change between the extreme years of the series were calculated. Results: The composition of the age groups of the population was inclined towards aging with a 5 percent decrease in the number of inhabitants from 0 to 19 years, together with an increase of twice that value in the elderly. Donations decrease by about 8 percent, while the number of patients transfused increases by 33 percent. The existence of statistically significant direct and inverse correlations between the indicators studied is verified. Conclusions. The results of the research are suggestive of a relationship between the blood donationand blood transfusion indicators and the changes in the age structure of the population observed which, if the current trend continues, lead to periods of blood shortage for transfusions(AU)
Assuntos
Humanos , Masculino , Feminino , Doadores de Sangue , Transfusão de Sangue/métodos , Dinâmica Populacional/estatística & dados numéricos , Seleção do Doador/métodos , Demografia/ética , Epidemiologia Descritiva , Estudos TransversaisRESUMO
Protein post-translational modifications increase the functional diversity of the proteome by covalently adding chemical moieties onto proteins thereby changing their activation state, cellular localization, interacting partners, and life cycle. Lipidation is one such modification that enables membrane association of naturally cytosolic proteins. Protein prenyltransferases irreversibly install isoprenoid units of varying length via a thioether linkage onto proteins that exert their cellular activity at membranes. Substrates of prenyltransferases are involved in countless signaling pathways and processes within the cell. Identification of new prenylation substrates, prenylation pathway regulators, and dynamic trafficking of prenylated proteins are all avenues of intense, ongoing research that are challenging, exciting, and have the potential to significantly advance the field in the near future.