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1.
Transpl Infect Dis ; 26(1): e14213, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38112078

RESUMEN

INTRODUCTION: Utilization of hepatitis C viremic (HCV+) deceased donor kidneys (DDKT) for aviremic recipients increases opportunities for transplantation with excellent short-term outcomes. Our primary aim was to understand longer-term outcomes, specifically assessing kidney and liver function in the first year posttransplant. METHODS: This was a retrospective single-center study of adult DDKT recipients of HCV+ kidneys (cases) matched 1:1 to recipients of HCV- kidneys (comparators). Between-group outcomes were analyzed using comparisons of means and proportions, survival analysis methods, and multivariable mixed effects models. RESULTS: Sixty-five cases and 65 comparators had statistically comparable demographic and clinical characteristics. There were no between-group differences in serum creatinine or estimated glomerular filtration rate at month 12 (p = .662) or in their trajectories over months 1-12 (p > .292). Within the first 60 days, rates of liver function values >3 times upper limit of normal among cases were comparable to comparators for aspartate aminotransferase (AST) (14% vs. 6%, p = .242) and higher for alanine transaminase (ALT) (23% vs. 6%, p = .011). AST declined during the first 8 weeks (p = .005) and stabilized for both groups (p = .406) during the following 10 months. ALT declined during the first 8 weeks (p < .001), continued to decline over months 3-12 (p = .016), and the trajectory was unrelated to antiviral therapy initiation among cases. CONCLUSIONS: Aviremic recipients of HCV+ kidneys had comparable kidney outcomes to matched recipients of HCV- kidneys. Despite more HCV+ recipients having an elevation in ALT within the first 60 days, ALT values normalized with no identified liver complications attributed to HCV.


Asunto(s)
Hepatitis C , Trasplante de Riñón , Adulto , Humanos , Trasplante de Riñón/efectos adversos , Trasplante de Riñón/métodos , Estudios Retrospectivos , Antivirales/uso terapéutico , Hepatitis C/tratamiento farmacológico , Riñón , Hepacivirus , Donantes de Tejidos , Viremia/tratamiento farmacológico
2.
Appetite ; 201: 107574, 2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-38909696

RESUMEN

The COVID-19 pandemic, one of the worst global health crises in the last century, impacted nearly every aspect of people's lives, including their dietary choices and food consumption patterns. It arrived during a long shift in American diets featuring increasingly large portions of processed foods as well as fruit and vegetable consumption that is well below recommended levels. Improving the latter has been a key part of policymakers' efforts to improve consumers' diets. This study surveyed individuals in the US South to determine the factors influencing their consumption of fruit and vegetables during the pandemic peak and how these have changed post-peak. During the peak, food venue, demographics, and concerns about diet and the seriousness of the virus heavily affected consumption. Greater amounts of fresh fruit and vegetables were consumed post-peak pandemic. Changes post-peak were predicted by food venue. Cooking meals at home was the main positive predictor for consumption. US policymakers should try and leverage the changes since the peak to promote greater consumption of fruit and vegetables.

3.
Clin Anat ; 36(6): 915-925, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37194679

RESUMEN

Medical courses worldwide are undergoing significant curricular changes, including the teaching and learning of histology. In order to set international standards for the anatomical sciences, the International Federation of Associations of Anatomists (IFAA) is developing core anatomical syllabuses by means of Delphi panels. Already published is a core syllabus for the teaching of the cell and the basic tissues within medicine. Here, we record the deliberations of an IFAA Delphi panel commissioned to develop core subject matter for the teaching within a medical histology course of the cardiovascular and lymphatic circulatory system, the lymphoid, respiratory, and digestive systems, and the integument. The Delphi panel was comprised of academics from multiple countries who were required to review relevant histological topics/items by evaluating each topic as being either "Essential," "Important," "Acceptable," or "Not required." Topics that were rated by over 60% of the panelists as being "Essential" are reported in this paper as being core topics for the teaching of medical histology. Also reported are topics that, while not reaching the threshold for being designated as core material, may be recommended or not required within the curriculum.


Asunto(s)
Sistema Cardiovascular , Educación de Pregrado en Medicina , Humanos , Curriculum , Aprendizaje , Técnica Delphi
4.
J Dairy Sci ; 105(2): 1170-1185, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34799111

RESUMEN

The objective of this experiment was to examine the effect of milk replacer (MR) feeding rate (FR) and frequency (FF) on glucose metabolism before and after weaning during summer and winter in the subtropical climate of the southeastern United States. Holstein calves (n = 48/season) were enrolled at 8 d of age (DOA) in the summer (June to August, body weight = 40.6 ± 0.7 kg) and winter (November to January, body weight = 41.9 ± 0.8 kg). In each season, calves were randomly assigned to 1 of 4 treatments in a 2 × 2 factorial arrangement including 2 FR [0.65 (low) or 0.76 kg of solids/d (high) of a 26% CP and 17% fat MR] and 2 FF [2× (0700 and 1600 h) or 3× (0700, 1600, and 2200 h)]. Calves were managed similarly and housed in polyethylene hutches bedded with sand. Milk replacer (12.5%) was fed based on treatments until 42 DOA when FR was reduced by half and offered 1×/d (0700 h) for 7 d. Plasma was collected weekly at 1400 h for analyses of glucose and insulin concentrations in all calves. Pre- and postprandial glucose and insulin concentrations of a subset of calves (n = 10/treatment per season) were measured on 20 DOA. A subset of calves (n = 8/treatment per season) was subjected to an intravenous glucose tolerance test (GTT) on 27 and 57 DOA and insulin challenge on 28 and 58 DOA at 1030 h. Average ambient temperature was 26.1 ± 2.2°C in summer and 12.9 ± 5.4°C in winter. During the preweaning period in both seasons, feeding high increased plasma glucose concentrations compared with low, and increasing FF reduced basal insulin concentrations. Compared with 2×, feeding 3× did not affect postprandial glucose but lowered insulin in the summer, whereas in the winter, increased glucose from 30 to 180 min but lowered insulin from 240 to 420 min after MR feeding. Following GTT before weaning in both seasons, 3× reduced insulin increment and area under the curve compared with 2× without affecting glucose disposal. After weaning, treatment did not affect glucose disposal or insulin responses after GTT during winter, but calves fed 3× had faster glucose disposal and stronger insulin responses than 2× during summer. In both summer and winter, preweaned calves fed 3× had greater decrement and area under the curve of plasma glucose after insulin challenge, suggesting enhanced peripheral tissue insulin response compared with 2×. This effect persisted after weaning only during summer. Increasing FR had no effect on metabolic responses in both seasons. In conclusion, increasing MR FF from 2 to 3 times per day reduced insulin secretion but enhanced insulin response on peripheral tissues of preweaned calves regardless of season.


Asunto(s)
Sustitutos de la Leche , Leche , Alimentación Animal/análisis , Animales , Peso Corporal , Bovinos , Dieta/veterinaria , Glucosa , Destete
5.
J Dairy Sci ; 105(2): 1150-1169, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34799113

RESUMEN

To evaluate the effects of milk replacer (MR) feeding rate (FR) and frequency (FF) on performance, abomasal emptying, and nutrient digestibility in the southeastern United States, Holstein calves (n = 48/season) were enrolled at 8 d of age (DOA) during summer [June to August, body weight (BW; mean ± SD) = 40.71 ± 4.35 kg] and winter (November to January, BW = 42.03 ± 3.83 kg). Within season, calves were randomly assigned to 1 of 4 treatments in a 2 × 2 factorial arrangement including 2 FR [0.65 (low) or 0.76 kg of solid per day (high) of a 26% crude protein and 17% fat MR], and 2 FF [2× (0700 and 1600 h) or 3× (0700, 1600, and 2200 h) daily]. Calves were housed in polyethylene hutches and managed similarly throughout the trial. Milk replacer (12.5% solids) was fed to calves based on their respective treatments until 42 DOA, when MR allowance was reduced by 50% and offered once a day (0700 h) for the following 7 d until weaning. Calves remained on trial until 63 DOA. Calf starter and water were offered ad libitum. Ambient temperature and relative humidity inside and outside hutches were measured hourly. Starter and MR intakes were recorded daily. Respiration rate and rectal temperature were recorded 3 times a week. Structural growth and BW were measured weekly. Acetaminophen (50 mg/kg of BW) mixed with MR was fed to a subset of calves (0700 h, n = 10/treatment per season) on 20 DOA. Plasma was collected at 15, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 420, and 480 min after feeding, to analyze acetaminophen. The acetaminophen concentration-time curve was modeled to the first derivative of Siegel's modified power exponential equation, and the time for plasma acetaminophen to reach maximum (Tmax) was calculated to evaluate abomasal emptying rate. During the pre- (14.9-17.9 DOA) and postweaning (51.0-54.0 DOA) periods, a subset (n = 8/treatment per season) of calves was used to determine the apparent digestibility of nutrients, using chromic oxide as the external marker. Feeding 3× reduced preweaning respiration rate during summer and reduced rectal temperature during winter. Increasing FR improved BW gain and structural growth. Feeding more times per day tended to improve growth during winter but not summer. We found no effect of treatment on nutrient digestibility. Increasing FR had no effect on Tmax during winter but tended to delay Tmax of plasma acetaminophen during summer. Regardless of season, increasing FF lowered Tmax of plasma acetaminophen. In conclusion, increasing FF accelerated abomasal emptying and might reduce heat load of preweaning dairy calves but improved growth only during winter. Increased MR allowance improved growth in both seasons but delayed abomasal emptying only under heat stress conditions.


Asunto(s)
Sustitutos de la Leche , Leche , Alimentación Animal/análisis , Animales , Peso Corporal , Bovinos , Dieta/veterinaria , Nutrientes , Destete
6.
J Dairy Sci ; 104(7): 8276-8289, 2021 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-33865597

RESUMEN

The aim of this trial was to evaluate the effects of an immunomodulatory supplement (OmniGen AF, OG; Phibro Animal Health Corp.) and heat stress on hormonal, inflammatory, and immunological responses of lactating dairy cows. Sixty multiparous Holstein cows were randomly assigned to 4 treatments in a 2 × 2 factorial arrangement using 2 environments: cooled using fans and misters, or noncooled, and 2 top-dressed feed supplements (56 g/d): OG or a placebo (CTL). Temperature-humidity index averaged 78 during the 8-wk trial. Blood was drawn to analyze cortisol, prolactin, and circulating tumor necrosis factor (TNF)-α and IL-10. Peripheral blood mononuclear cells (PBMC) were isolated and stimulated with hydrocortisone, prolactin, or lipopolysaccharide (LPS), individually or in several combinations, to assess induced proliferation and cytokine production. At d 52, 6 cows per treatment were injected i.v. with an LPS bolus (ivLPS) to assess hormone and cytokine responses. For cooled cows, feeding OG increased plasma cortisol concentration relative to CTL. Noncooled cows fed CTL had lower circulating TNF-α concentrations than noncooled-OG and cooled-CTL cows, with cooled-OG intermediate. Hydrocortisone+LPS-stimulated PBMC from OG cows tended to proliferate more than CTL. Relative to cooled cows, PBMC from noncooled cows produced more TNF-α and IL-10 when stimulated with LPS. Following ivLPS, cooled-OG cows had a greater cortisol response than the other treatments. In conclusion, OG supplementation enhanced cortisol release under basal condition and induced inflammation with cooling compared with CTL. This suggests that heat stress inhibits OG-mediated cortisol release. Heat stress seemed to enhance the inflammatory responses of PBMC from lactating cows. However, OG supplementation promoted PBMC proliferation under stress, or in the presence of hydrocortisone.


Asunto(s)
Lactancia , Leche , Alimentación Animal , Animales , Bovinos , Dieta , Suplementos Dietéticos , Femenino , Respuesta al Choque Térmico , Leucocitos Mononucleares
7.
Clin Anat ; 34(3): 483-495, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33449424

RESUMEN

The International Federation of Associations of Anatomists (IFAA) are developing core syllabuses for the anatomical sciences by means of Delphi panels. In this article, we provide the core subject matter for the teaching of the cell and of basic tissues within a medical histology course. The goal is to set an international standard providing guidelines for such a core syllabus. The Delphi panel, composed of members across multiple countries, required two rounds to evaluate 257 relevant items/topics approved by the IFAA. Based on the perception of the core knowledge of histology, the items were to be rated by each member of the Delphi panel as being "Essential," "Important," "Acceptable," or "Not required." Topics that were rated by over 60% of the panelists as being "Essential" and "Important" are provided in this article and are recommended for the teaching of medical histology.


Asunto(s)
Anatomía/educación , Curriculum , Educación de Pregrado en Medicina , Histología/educación , Técnica Delphi , Humanos
8.
Trop Anim Health Prod ; 53(2): 298, 2021 Apr 30.
Artículo en Inglés | MEDLINE | ID: mdl-33928444

RESUMEN

The objective of this study was to determine the effects of supplemental Bacillus subtilis (BS, 0.5 × 1011 CFU/day), injectable vitamin E and selenium (ES, 1000 mg α-tocopherol acetate and 10 mg sodium selenite), or both during the transition period on health parameters and the incidence of retained fetal membranes (RFM) of dairy cows under tropical conditions (average temperature humidity index = 77.0). Thirty-two crossbred Holstein-Friesian cows were used in a randomized design trial with a 2 × 2 factorial arrangement of treatments. Cows were randomly assigned to one of four treatments, including no supplementation (CON), single intramuscular injection of ES on day - 21 before the expected calving date (ES), daily oral supplementation of BS between day - 21 and day 21 relative to calving, or both ES and BS. Body condition score (BCS) and blood samples were collected on days - 28, - 14, 0, 14, and 28 relative to calving. Mean concentrations of corpuscular hemoglobin were higher (33.12 vs 34.03 g/dL, p = 0.06) and platelets were lower (380.97 vs 302.32 × 103/µL, p = 0.10) with ES than without ES. Cows fed supplemental BS had lower concentrations of creatinine and albumin and tended to have lower AST and ß-hydroxybutyrate (BHBA) levels. However, concentrations of glucose were higher for cows fed BS than for those without BS. No differences in the incidence of RFM were observed. In summary, supplemental B. subtilis could reduce indicators of negative energy balance by increasing glucose and lowering BHBA and improve health parameters by keeping WBCs and monocytes in a healthy range during the transition period.


Asunto(s)
Lactancia , Selenio , Ácido 3-Hidroxibutírico , Animales , Bacillus subtilis , Bovinos , Dieta/veterinaria , Suplementos Dietéticos , Femenino , Leche , Periodo Posparto , Selenio/farmacología , Vitamina E/farmacología
9.
J Dairy Sci ; 103(11): 10258-10263, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32921471

RESUMEN

The negative effects of heat stress partly result from disturbed systemic metabolic responses and possibly altered mammary gland metabolism of lactating dairy cows. Our previous research reported that supplemental dietary Zn sources may affect milk fat synthesis of lactating cows during summer. Thus, our objective was to evaluate the systemic and mammary metabolism of cows fed 2 supplemental Zn sources under 2 environmental conditions. Multiparous lactating Holstein cows (n = 72; days in milk: 99.7 ± 13.4 d; parity: 2.9 ± 0.3) were randomly assigned to 4 treatments in a 2 × 2 factorial arrangement. Treatments included 2 different environments: cooled (CL) using fans and misters or noncooled (NC), and 2 supplemental Zn sources: 75 mg of Zn hydroxychloride/kg of DM (IOZ) or 35 mg of Zn hydroxychloride/kg of DM + 40 mg of Zn-Met complex/kg of DM (ZMC). The 168-d experiment was divided into baseline and environmental challenge phases, 84 d each. During the baseline phase, all cows were cooled and fed respective dietary treatments, and during the environmental challenge phase cows continued receiving the same diets but NC cows were deprived of cooling. Temperature-humidity index averaged 77.6 ± 3.8 and 77.8 ± 3.8 for CL and NC pens, respectively, during the environmental challenge phase. Plasma was collected before the baseline phase and at 1, 3, 5, 12, 22, 26, 41, 54, 61, 68, 75, and 81 d of the environmental challenge phase for metabolites and insulin analyses. Mammary biopsies were collected before the baseline phase and at 7 and 56 d of the environmental challenge phase to measure mRNA abundance of proteins related to mammary metabolism. Compared with CL, NC reduced plasma glucose, nonesterified fatty acids, ß-hydroxybutyrate, and triglyceride concentrations, but increased insulin concentration. Cows fed ZMC had greater plasma triglyceride concentration than IOZ. Treatments had no effect on mRNA abundance of protein related to mammary fatty acid and glucose metabolism except that NC cows had greater mammary mRNA abundance of 6-phosphogluconate dehydrogenase and ATP-dependent 6-phosphofructokinase than CL cows. In conclusion, deprivation of evaporative cooling influenced the metabolism of lactating dairy cows but dietary Zn source had no apparent effect.


Asunto(s)
Bovinos/metabolismo , Respuesta al Choque Térmico/efectos de los fármacos , Respuesta al Choque Térmico/fisiología , Glándulas Mamarias Animales/metabolismo , Zinc/administración & dosificación , Aire Acondicionado , Animales , Suplementos Dietéticos , Grasas/metabolismo , Ácidos Grasos/metabolismo , Ácidos Grasos no Esterificados/sangre , Femenino , Humedad , Lactancia/metabolismo , Glándulas Mamarias Animales/efectos de los fármacos , Leche/metabolismo , Proteínas de la Leche/genética , Proteínas de la Leche/metabolismo , ARN Mensajero/análisis , Estaciones del Año , Temperatura
10.
Trop Anim Health Prod ; 52(5): 2359-2369, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32170651

RESUMEN

Corn gluten feed (CGF) is a co-product of wet milling that can replace energy or fiber ingredients in dairy cow rations. The present meta-analysis examines how inclusion of CGF can affect dry matter intake (DMI), milk yield (MY), milk components, and ruminal fermentation parameters. A literature search was conducted to identify papers published from 1990 to 2018. Effect size for all parameters was calculated as standardized mean difference with a 95% confidence interval. Heterogeneity was determined using Q test and I2 statistic, while meta-regression was used to examine factors influencing heterogeneity. Results indicate that feeding CGF increased the effect size for DMI and MY. No differences were observed for effect size for percentage milk fat or protein; however, increases were observed in the effect size for milk fat yield, milk protein yield, milk lactose percentage, and milk lactose yield. Ruminal fermentation parameters revealed a decrease in the effect size for pH and acetate and an increase for propionate. No differences were observed in the effect size for total VFA or butyrate. The Q test demonstrated heterogeneity (P < 0.1) for MY, MFP, and pH. The results indicate differences in forage intake between groups receiving CGF and control as an important factor contributing to heterogeneity for DMI, MFP, and pH. It can be concluded from this meta-analysis that in addition to increased DMI, inclusion of CGF in cow diets increases MY and improves milk components. Furthermore, inclusion of CGF in the diet lowers ruminal pH while decreasing acetate and increasing propionate contents.


Asunto(s)
Bovinos/fisiología , Conducta Alimentaria , Glútenes/metabolismo , Leche/metabolismo , Rumen/metabolismo , Zea mays/química , Alimentación Animal/análisis , Animales , Dieta/veterinaria , Conducta Alimentaria/efectos de los fármacos , Fermentación , Glútenes/administración & dosificación , Leche/química
11.
Skeletal Radiol ; 48(8): 1269-1274, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-30446788

RESUMEN

OBJECTIVE: To describe and evaluate the outcome following shoulder manipulation under rotator interval block for the treatment of adhesive capsulitis. MATERIALS AND METHODS: Patients with adhesive capsulitis referred by our local orthopaedic shoulder surgeons consented to targeted ultrasound-guided injection of the glenohumeral joint via the rotator interval. Inclusion criteria included a failure to respond to conservative treatment and the absence of a full-thickness rotator cuff tear. Twelve millilitres of a mixture of local anaesthetic and steroid was injected into the rotator interval using a 21-gauge needle, with a small volume of the same solution instilled into the subacromial bursa. Following injection, under local anaesthetic block, patients were gently manipulated into abduction, external rotation and internal rotation as far as they could comfortably tolerate. Patients were assessed pre-injection with documented pain scores from 0 to 10 on a visual analogue scale (VAS) and the Oxford Shoulder Score (OSS) questionnaire. Initial follow-up comprised a VAS pain score at 1 h, 24 h and 2 weeks. Clinical review by the referring orthopaedic surgeon was performed at 2 months post-injection. Long-term follow-up involved a VAS pain score and the OSS questionnaire at 5 months. RESULTS: Forty patients were suitable for inclusion in the study. Twenty-three were female (57.5%) and 17 were male. The mean age was 52 years (range, 31-73 years). Twelve patients were post-operative. The duration of symptoms ranged from 3 months to 18 months. Mean pre-procedure OSS was recorded as 23.3 (range, 4-36). The mean VAS pain score was 7.7 before the procedure (range, 4 - 10), 3.4 at 1 h (range, 0-8), 2.9 at 24 h (range, 0-8), and 1.8 at 2 weeks (range 1-4). Orthopaedic follow-up at an average of 66 days post-injection was recorded in 18 patients. All patients reported initial improvement of their shoulder pain and return to near full range of movement; however, recurrence of adhesive capsulitis symptoms was recorded in 5 patients. One case of rupture of the long head of the biceps tendon was reported, but the patient remained asymptomatic. Long-term follow-up at 5 months was obtained in 31 patients, with a mean OSS of 42 (range, 21-60) and VAS of 2.3 (range, 0-7). CONCLUSION: Manipulation under general anaesthesia is a well-recognised treatment for adhesive capsulitis. We report that targeted ultrasound-guided injection of the rotator interval and manipulation of the shoulder under local anaesthetic blockade result in good outcomes in reducing shoulder pain and symptoms of adhesive capsulitis with low recurrence and complication rates.


Asunto(s)
Bursitis/diagnóstico por imagen , Bursitis/terapia , Manipulación Ortopédica/métodos , Adulto , Anciano , Anestésicos Locales/administración & dosificación , Estudios de Cohortes , Femenino , Humanos , Inyecciones Intraarticulares , Masculino , Persona de Mediana Edad , Bloqueo Nervioso , Rango del Movimiento Articular , Ultrasonografía
12.
Clin Anat ; 32(1): 26-34, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30247781

RESUMEN

We have already reported that medical students who have prior knowledge of classical Greek and Latin perform better in anatomy examinations. It has also been shown that fluency in more than one language can influence spatial and verbal intelligence and here we hypothesize that medical students who have linguistic skills develop higher spatial and verbal intelligence compared with monolingual students, that there are gender differences, and that there are positive effects on performance in anatomy examinations. One hundred and seventy-three second year medical students at Cardiff University responded to spatial and verbal intelligence questions that were adapted from the British MENSA website. This is a 63% response rate for the student cohort. The students were then categorized into different groups depending upon their linguistic knowledge and skills. Across all groups, no gender differences were discerned for either spatial or verbal intelligence. Students who were categorized as monolingual (with only skills in English) had lower spatial and verbal intelligence than those who were multilingual. Medical students who had fluency in English and non-European languages showed greater spatial and verbal intelligence than other groups. However, there was no significant improvement in their examination marks for anatomy, although the examination performance might be complicated by cultural considerations. A further finding from our study was that, where an anatomy test required spatial recognition using cadaveric specimens, students with low spatial intelligence had significantly poorer performances. Furthermore, where tests used multiple choice questions, the level of spatial and verbal intelligences had no influence. We would advocate that, when all newly-recruited medical students are tutored in medical terminologies to help them develop the extensive vocabulary required for their professional careers, they should also be made aware of any deficiencies in spatial and verbal skills that could affect their learning abilities. Given that we would expect students to benefit in their careers from developing spatial and verbal skills, we also recommend that examination tests in anatomy should avoid the exclusive use of multiple choice questions. Clin. Anat., 2018. © 2018 Wiley Periodicals, Inc.


Asunto(s)
Anatomía/educación , Multilingüismo , Rendimiento Académico , Femenino , Humanos , Masculino , Aprendizaje Espacial , Aprendizaje Verbal
13.
Clin Anat ; 32(2): 253-267, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-30295961

RESUMEN

Although there have been many studies assessing emotional responses of medical students to the dissecting room experience, little is known about whether dissecting particular regions of the human body cause more concern than others. Furthermore, no studies have been conducted on the concerns of professional anatomists. In this study, we assessed the hypothesis that medical students are more concerned about the dissection of the face, the perineum and the extremities of the limbs. We also hypothesized that there are gender differences. For the reactions of a group of professional anatomists from the United States and Europe we hypothesized that they were less concerned than the medical students and showed no differences across the regions of the body. The hypotheses were tested by means of questionnaires distributed to medical students at Cardiff University and at the Descartes Paris University who had recently completed their anatomy courses and to anatomists working at universities in Europe and the USA. Ethical approval for the study was obtained from the ethical committees at the Cardiff School of Biosciences and at Paris and all data was obtained by consent of the respondents and remained confidential. The findings were complex, although the level of concern was low overall. Some regional differences were discerned, particularly concerning the face, the perineum, the hand and the female chest. Anatomists were less concerned than the students and female students and female anatomists showed more concern than their male counterparts. Few differences were discerned however between student respondents who had positive and neutral attitudes to gender "politics" and those who espoused negative views. We recommend that, at the start of an anatomy dissection course, time is spent dealing with sensitive issues (including equality and diversity issues), emotional responses, and matters pertaining to mortality. However, we argue that this should not involve hiding regions of the body, nor overreacting to the natural anxiety of students, since doing either of these things could enhance negative reactions and stifle the progress of the student from being a layperson to a competent healthcare professional. Clin. Anat. 32:253-267, 2019. © 2018 Wiley Periodicals, Inc.


Asunto(s)
Anatomistas/psicología , Actitud del Personal de Salud , Disección/psicología , Estudiantes de Medicina/psicología , Anatomía/educación , Cadáver , Disección/educación , Disección/ética , Femenino , Cuerpo Humano , Humanos , Masculino , Sexismo , Encuestas y Cuestionarios
14.
Pediatr Blood Cancer ; 65(9): e27217, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-29750396

RESUMEN

BACKGROUND: This phase 1/2 study (NCT01751308) evaluated cabazitaxel in pediatric patients. Phase 1 determined the maximum tolerated dose (MTD) in patients with recurrent/refractory solid tumors, including central nervous system (CNS) tumors. Phase 2 evaluated activity in pediatric recurrent high-grade glioma (HGG) or diffuse intrinsic pontine glioma (DIPG). PROCEDURE: In phase 1, a 3 + 3 dose-escalation study design was followed. Cabazitaxel was administered at a starting dose of 20 mg/m2 . Dose-limiting toxicities (DLTs) during cycle 1 were assessed to determine the MTD. Tumor response and cabazitaxel pharmacokinetics were also assessed. In phase 2, patients received cabazitaxel at the MTD determined in phase 1. Tumor responses were assessed every 9 weeks (modified Response Assessment in Neuro-oncology criteria). Progression-free survival and cabazitaxel pharmacokinetics were evaluated, and overall survival was estimated. RESULTS: In phase 1, 23 patients were treated, including 19 with CNS tumors. One patient had a partial response; five had stable disease for >3 cycles. Common adverse events included fatigue, diarrhea, nausea and vomiting, febrile neutropenia, and hypersensitivity reactions. Two of three DLTs (febrile neutropenia) occurred with a dose of 35 mg/m2 ; the MTD was 30 mg/m2 . Slightly higher cabazitaxel clearance was observed compared with adult trials. In phase 2, 16 patients (eight HGG and eight DIPG) were enrolled; 11 were evaluable for response and five withdrew (three due to anaphylaxis). All 11 patients progressed within four cycles. No responses were observed; the study was stopped due to futility. CONCLUSIONS: The safety profile of cabazitaxel was consistent with previous studies. The MTD (30 mg/m2 ) was higher than the adult MTD. Cabazitaxel did not demonstrate activity in recurrent/refractory HGG or DIPG.


Asunto(s)
Antineoplásicos Fitogénicos/uso terapéutico , Neoplasias/tratamiento farmacológico , Taxoides/uso terapéutico , Adolescente , Antineoplásicos Fitogénicos/administración & dosificación , Antineoplásicos Fitogénicos/efectos adversos , Antineoplásicos Fitogénicos/farmacocinética , Neoplasias Encefálicas/tratamiento farmacológico , Niño , Preescolar , Hipersensibilidad a las Drogas/etiología , Femenino , Enfermedades Gastrointestinales/inducido químicamente , Glioma/tratamiento farmacológico , Enfermedades Hematológicas/inducido químicamente , Humanos , Estimación de Kaplan-Meier , Masculino , Dosis Máxima Tolerada , Tasa de Depuración Metabólica , Recurrencia Local de Neoplasia/tratamiento farmacológico , Supervivencia sin Progresión , Taxoides/administración & dosificación , Taxoides/efectos adversos , Taxoides/farmacocinética , Insuficiencia del Tratamiento
15.
Clin Anat ; 31(4): 501-506, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29396874

RESUMEN

The ability of medical students to acquire anatomical and medical terminologies could be influenced by their knowledge of classical Greek and Latin. In a previous study (Stephens and Moxham , Clin. Anat. 29:696at. ), it was reported that, while newly recruited medical students have a very favorable attitude toward the need to understand these classical languages, final year students see no benefit. In this study, we tested the hypothesis that, regardless of attitude, students in the initial stages of their medical education perform better at both summative and formative anatomy examinations if they have prior knowledge of Greek and Latin. First year medical students at Cardiff University who had been involved in the previous study concerning attitudes toward the relevance of the classical languages to medical education were evaluated in terms of their examination results in anatomy. Two hundred and twenty-seven students responded to a questionnaire (83% of the class) that categorized students into their linguistic knowledge and skills and their performances in formative and summative examinations were analyzed. For medical students with prior knowledge of classical Greek and Latin performed better in both summative and formative anatomy examinations. The results are therefore consistent with our hypothesis. Clin. Anat. 31:501-506, 2018. © 2018 Wiley Periodicals, Inc.


Asunto(s)
Anatomía/educación , Lenguaje , Humanos , Estudiantes de Medicina
16.
Clin Anat ; 31(2): 231-249, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29057569

RESUMEN

The formulation of core syllabuses for the biomedical sciences within medical and dental courses is partially driven by the need to cope with decreased time allocations for these subjects as a result of major curricular changes taking place worldwide. There is also a requirement to deal with the request for increased clinical relevance. In response to such demands, the International Federation of Associations of Anatomists (IFAA) is devising core syllabuses for the anatomical sciences relating to the education and training of both scientific and clinical professions. The process initially involves using Delphi Panels consisting of a team of anatomists, scientists, and clinicians who evaluate syllabus content in detail and accord each element/topic 'essential,' 'important,' 'acceptable,' or 'not required' status. Their conjectures, published on the IFAA website, provide merely a framework to enable other stakeholders to comment. The approach is international in scope, is conceptually 'democratic,' and is developmentally fluid in being readily available for amendment. The aim is to set internationally recognized standards and thus to provide guidelines concerning anatomical knowledge when engaged in course development. This article presents the deliberations of an IFAA Delphi Panel into a core syllabus for oral anatomy, histology, and embryology within the dental curriculum. Clin. Anat. 31:231-249, 2018. © 2017 Wiley Periodicals, Inc.


Asunto(s)
Curriculum/normas , Educación en Odontología/normas , Boca/anatomía & histología , Anatomía/educación , Animales , Técnica Delphi , Embriología/educación , Histología/educación , Humanos , Boca/embriología
17.
Clin Anat ; 30(5): 635-643, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28452118

RESUMEN

Many studies have been undertaken to assess the attitudes of medical students to the clinical importance of gross anatomy. However, much less is known about their attitudes toward the clinical importance of histology. Using Thurstone and Chave methods to assess attitudes, over 2,000 early stage medical students across Europe provided responses to a survey that tested the hypothesis that the students have a high regard for histology's clinical relevance. Regardless of the university and country surveyed, and of the teaching methods employed for histology, our findings were not consistent with our hypotheses, students providing a more moderate assessment of histology's importance compared to gross anatomy but more positive than their attitudes toward embryology. Histology should play a significant role in medical education in terms of appreciating not just normal structure and function but also pathology. We conclude that teachers of histology should pay special attention to informing newly-recruited medical students of the significant role played by histology in attaining clinical competence and in underpinning their status as being learned members of a healthcare profession. This work was conducted under the auspices of the Trans-European Pedagogic Research Group (TEPARG). Clin. Anat. 30:635-643, 2017. © 2017 Wiley Periodicals, Inc.


Asunto(s)
Actitud del Personal de Salud , Histología/educación , Estudiantes de Medicina/psicología , Humanos
18.
Clin Anat ; 29(6): 696-701, 2016 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26860743

RESUMEN

Students on entering medical school are faced with acquiring new, and voluminous, anatomical and medical terminologies. A reason why acquiring these terminologies may be problematic relates to the fact that many terms are derived from classical Greek and Latin; languages nowadays that are rarely taught at school. It might also be supposed that the often reported reduction in exposure to anatomy, and time spent in the dissection room, impairs the students' knowledge and understanding of anatomical relationships, and thus further complicates the acquisition of the terminologies. To date, there have been no studies that have quantified the attitudes of medical students toward the importance of understanding classical Greek and Latin during their medical training. In order to assess these attitudes, this study was undertaken for the newly-recruited (First Year) medical students and for the Final Year medical students at Cardiff University. They were provided with a brief questionnaire that was devised in accordance with Thurstone and Chave (1951) principles and with ethical approval. One hundred and eighty First Year students and one hundred and nineteen Final Year students responded. Our initial hypothesis was that students throughout the medical curriculum have an unfavorable attitude toward the importance of classical Greek and Latin. This hypothesis was supported by the attitudes of the Final Year students but not by the First Year medical students. While we would still advocate that First Year medical students should acquire some understanding of and have some formal or informal instruction in, classical Greek and Latin as they pertain to medical terminologies, we acknowledge that Final Year students are likely to have become reasonably well-versed in the origins of medical terminologies without formal instruction. Clin. Anat. 29:696-701, 2016. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Anatomía/educación , Lenguaje , Estudiantes de Medicina/psicología , Terminología como Asunto , Actitud del Personal de Salud , Humanos
19.
Clin Anat ; 29(2): 144-50, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26538399

RESUMEN

Although there have been many studies reporting the attitudes of medical students to the clinical importance of gross anatomy, little is known about their opinions concerning the clinical importance of embryology. Using Thurstone and Chave methods to assess attitudes, nearly 1,600 medical students across Europe in the early stages of their training provided responses to a survey that tested the hypothesis that they do not regard embryology as highly clinically relevant. Indeed, we further proposed that student attitudes to gross anatomy are much more positive than those toward embryology. Our findings show that our hypotheses hold, regardless of the university and country surveyed and regardless of the teaching methods employed for embryology. Clearly, embryology has a significant part to play in medical education in terms of understanding prenatal life, of appreciating how the organization of the mature human body has developed, and of providing essential information for general medical practice, obstetrics and pediatrics, and teratology. However, while newly recruited medical students understand the importance of gross anatomy in the development of professional competence, understanding the importance of embryology requires teachers, medical educationalists, and devisors of medical curricula to pay special attention to informing students of the significant role played by embryology in attaining clinical competence and achieving the knowledge and understanding of the biomedical sciences that underpins becoming a learned member of a health care profession.


Asunto(s)
Embriología/educación , Estudiantes de Medicina/psicología , Europa (Continente)
20.
Phys Rev Lett ; 112(17): 173002, 2014 May 02.
Artículo en Inglés | MEDLINE | ID: mdl-24836242

RESUMEN

We report a high-accuracy measurement of the differential static scalar polarizability Δα(0) of the 5s(2)S(1/2)-4d(2)D(5/2) transition of the (88)Sr(+) ion. The high accuracy is obtained by comparing the micromotion-induced positive scalar Stark shift to the negative time-dilation shift. Measurement of the trap drive frequency where these shifts cancel is used to determine Δα(0) without the need to determine the electric field. Δα(0) is a critical parameter for the operation of frequency standards as it determines the blackbody radiation frequency shift coefficient, the largest source of uncertainty in the (88)Sr(+) ion clock. The measured value of Δα(0) is -4.7938(71) × 10(-40) J m(2)/V(2). Taking into account the dynamic correction, the blackbody shift at 300 K is 0.247,99(37) Hz. The contribution of the blackbody shift coefficient to the uncertainty of the ion standard has been reduced by a factor of 24, from 2 × 10(-17) to 8.3 × 10(-19). The revised total uncertainty of our reference standard is 1.2 × 10(-17), limited by the blackbody field evaluation. An additional benefit of the low uncertainty of Δα(0) is the ability to suppress, by a factor of about 200, the net micromotion frequency shifts.

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