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31.
Gabriela Egaña-Ugrinovic Laura García Maria-Angeles Marcos Marta López Alfons Nadal 《The journal of maternal-fetal & neonatal medicine》2016,29(21):3439-3444
Objective: The purpose of this study was to describe the fetal/neonatal cytomegalovirus (CMV) status according to chorionicity and outcome in twin pregnancies diagnosed with CMV.Methods: An opportunistic diagnosis of CMV infection was performed in a tertiary referral center. All cases diagnosed in twin pregnancies (2006–2011) were included. Prenatal diagnosis was performed by CMV-DNA in the amniotic fluid (AF) of both fetuses only on the evidence of sonographic findings in either one or both twins. Neonatal screening was selectively assessed in symptomatic newborns, preterm, and infants born to HIV-infected mothers. Congenital infection was considered in the presence of CMV-DNA in AF, fetal tissues or newborn urine within the first 2 weeks of life, and symptomatic disease with clinical findings at birth or autopsy.Results: A total of six twin pregnancies with congenital CMV infection were diagnosed, five dichorionic and one monochorionic diamniotic. Only one sibling was infected among dichorionic pregnancies, two diagnosed prenatally, and three after birth. In the monochorionic pregnancy, the diagnosis was performed prenatally and the two fetuses were infected and severely damaged.Conclusions: Congenital CMV infection in twins might be related, among other factors, to chorionicity, and in DC twins a non-concordant infection can be expected. 相似文献
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33.
Marlein Miranda Cona Yeranddy Aguiar Alpizar Junjie Li Matthias Bauwens Yuanbo Feng Ziping Sun Jian Zhang Feng Chen Karel Talavera Peter de Witte Alfons Verbruggen Raymond Oyen Yicheng Ni 《Pharmaceutical research》2014,31(2):278-290
Purpose
To study whether formulation influences biodistribution, necrosis avidity and tumoricidal effects of the radioiodinated hypericin, a necrosis avid agent for a dual-targeting anticancer radiotherapy.Methods
Iodine-123- and 131-labeled hypericin (123I-Hyp and 131I-Hyp) were prepared with Iodogen as oxidant, and formulated in dimethyl sulfoxide (DMSO)/PEG400 (polyethylene glycol 400)/water (25/60/15, v/v/v) or DMSO/saline (20:80, v/v). The formulations with excessive Hyp were optically characterized. Biodistribution, necrosis avidity and tumoricidal effects were studied in rats (n?=?42) without and with reperfused liver infarction and implanted rhabdomyosarcomas (R1). To induce tumor necrosis, R1-rats were pre-treated with a vascular disrupting agent. Magnetic resonance imaging, tissue-gamma counting, autoradiography and histology were used.Results
The two formulations differed significantly in fluorescence and precipitation. 123I-Hyp/Hyp in DMSO/PEG400/water exhibited high uptake in necrosis but lower concentration in the lung, spleen and liver (p?<?0.01). Tumor volumes of 0.9?±?0.3 cm3 with high radioactivity (3.1?±?0.3% ID/g) were detected 6 days post-treatment. By contrast, 131I-Hyp/Hypin DMSO/saline showed low uptake in necrosis but high retention in the spleen and liver (p?<?0.01). Tumor volumes reached 2.6?±?0.7 cm3 with low tracer accumulation (0.1?±?0.04%ID/g).Conclusions
The formulation of radioiodinated hypericin/hypericin appears crucial for its physical property, biodistribution, necrosis avidity and tumoricidal effects. 相似文献34.
Cheguevara Afaneh Jonathan Abelson Barrie S. Rich Gregory Dakin Rasa Zarnegar Philip S. Barie Thomas J. Fahey III Alfons Pomp 《The Journal of surgical research》2014
Background
Obesity has historically been a positive predictor of surgical morbidity, especially in the morbidly obese. The purpose of our study was to compare outcomes of obese patients undergoing laparoscopic cholecystectomy (LC).Methods
We reviewed 1382 consecutive patients retrospectively who underwent LC for various pathologies from January 2008 to August 2011. Patients were stratified based on the World Health Organization definitions of obesity: nonobese (body mass index [BMI] < 30 kg/m2), obesity class I (BMI 30–34.9 kg/m2), obesity class II (BMI 35–39.9 kg/m2), and obesity class III (BMI ≥ 40 kg/m2). The primary end points were conversion rates and surgical morbidity. The secondary end point was length of stay.Results
There were significantly more females in the obesity II and III groups (P = 0.0002). American Society of Anesthesiologists scores were significantly higher in the obesity I, II, and III groups compared with the nonobese (P < 0.05; P < 0.01; and P < 0.0001, respectively). Independent predictors of conversion on multivariate analysis (MVA) included age (P = 0.01), acute cholecystitis (P = 0.03), operative time (P < 0.0001), blood loss (P < 0.0001), and fellowship-trained surgeons (P < 0.0001). Independent predictors of intraoperative complications on MVA included age (P = 0.009), white patients (P = 0.009), previous surgery (P = 0.001), operative time (P < 0.0001), and blood loss (P = 0.01). Independent predictors of postoperative complications on MVA included American Society of Anesthesiologists score (P < 0.0001), acute cholecystitis (P < 0.0001), and a postoperative complication (P < 0.0001). BMI was not a predictor of conversions or surgical morbidity. Length of stay was not significantly different between the four groups.Conclusions
This study demonstrates that overall conversion rates and surgical morbidity are relatively low following LC, even in obese and morbidly obese patients. 相似文献35.
Timing the fearful brain: unspecific hypervigilance and spatial attention in early visual perception
Mathias Weymar Andreas Keil Alfons O. Hamm 《Social cognitive and affective neuroscience》2014,9(5):723-729
Numerous studies suggest that anxious individuals are more hypervigilant to threat in their environment than nonanxious individuals. In the present event-related potential (ERP) study, we sought to investigate the extent to which afferent cortical processes, as indexed by the earliest visual component C1, are biased in observers high in fear of specific objects. In a visual search paradigm, ERPs were measured while spider-fearful participants and controls searched for discrepant objects (e.g. spiders, butterflies, flowers) in visual arrays. Results showed enhanced C1 amplitudes in response to spatially directed target stimuli in spider-fearful participants only. Furthermore, enhanced C1 amplitudes were observed in response to all discrepant targets and distractors in spider-fearful compared with non-anxious participants, irrespective of fearful and non-fearful target contents. This pattern of results is in line with theoretical notions of heightened sensory sensitivity (hypervigilance) to external stimuli in high-fearful individuals. Specifically, the findings suggest that fear facilitates afferent cortical processing in the human visual cortex in a non-specific and temporally sustained fashion, when observers search for potential threat cues. 相似文献
36.
Elizabeth M. Widen Gladys Strain Wendy C. King Wenwen Yu Susan Lin Bret Goodpaster John Thornton Anita Courcoulas Alfons Pomp Dympna Gallagher 《Obesity surgery》2014,24(6):847-854
Background
Few studies have validated bioelectrical impedance analysis (BIA) following bariatric surgery.Methods
We examined agreement of BIA (Tanita 310) measures of total body water (TBW) and percent body fat (%fat) before (T0) and 12 months (T12) after bariatric surgery, and change between T0 and T12 with reference measures: deuterium oxide dilution for TBW and three-compartment model (3C) for %fat in a subset of participants (n?=?50) of the Longitudinal Assessment of Bariatric Surgery-2.Results
T0 to T12 median (IQR) change in deuterium TBW and 3C %fat was ?6.4 L (6.4 L) and ?14.8 % (13.4 %), respectively. There were no statistically significant differences between deuterium and BIA determined TBW [median (IQR) difference: T0 ?0.1 L (7.1 L), p?=?0.75; T12 0.2 L (5.7 L), p?=?0.35; Δ 0.35 L(6.3 L), p?=?1.0]. Compared with 3C, BIA underestimated %fat at T0 and T12 [T0 ?3.3 (5.6), p?<?0.001; T12 ?1.7 (5.2), p?=?0.04] but not change [0.7 (8.2), p?=?0.38]. Except for %fat change, Bland-Altman plots indicated no proportional bias. However, 95 % limits of agreement were wide (TBW 15–22 L, %fat 19–20 %).Conclusions
BIA may be appropriate for evaluating group level response among severely obese adults. However, clinically meaningful differences in the accuracy of BIA between individuals exist. 相似文献37.
Michael T. Barbe MD Lisa Tonder MS Paul Krack MD PhD Bettina Debû MD Michael Schüpbach MD Steffen Paschen MD Till A. Dembek MD Andrea A. Kühn MD Valerie Fraix MD Christine Brefel-Courbon MD PhD Lars Wojtecki MD PhD David Maltête MD PhD Phillippe Damier MD PhD Friederike Sixel-Döring MD Daniel Weiss MD Marcus Pinsker MD PhD Tatiana Witjas MD PhD Stephane Thobois MD PhD Carmen Schade-Brittinger B.Sc Jörn Rau MSc Jean-Luc Houeto MD PhD Andreas Hartmann MD PhD Lars Timmermann MD PhD Alfons Schnitzler MD PhD Valerie Stoker MPH Marie Vidailhet MD PhD Günther Deuschl MD PhD for the EARLYSTIM study group 《Movement disorders》2020,35(1):82-90
38.
Alfons Mahnert 《Journal of molecular medicine (Berlin, Germany)》1922,1(37):1840
Ohne Zusammenfassung 相似文献
39.
40.
Alfons Hollederer 《Zeitschrift fur Gesundheitswissenschaften》2011,19(3):257-268