4.6 Article

Histopathological Changes of the Heart After Neonatal Dexamethasone Treatment: Studies in 4-, 8-, and 50-Week-Old Rats

期刊

PEDIATRIC RESEARCH
卷 66, 期 1, 页码 74-79

出版社

NATURE PUBLISHING GROUP
DOI: 10.1203/PDR.0b013e3181a283a0

关键词

-

资金

  1. Netherlands Heart Foundation (NHS) [2001B081, 2004T31]

向作者/读者索取更多资源

Dexamethasone (Dex), for prevention of chronic lung disease in preterm infants, showed potential negative long-term effects. Studies regarding long-term cardiovascular effects are lacking. We investigated possible histopathological myocardial changes after neonatal Dex in the young and adult rat heart. Rats were treated with Dex on d 1, 2, and 3 (0.5, 0.3, and 0. 1 mg/ka) of life. Control-pups received saline. At 4, 8, and 50 wk after birth rats were killed and anatomic data collected. Heart tissue was stained with hematoxylin and eosin, Cadherin-periodic acid schiff, and sirius red for cardiomyocyte morphometry and collagen determination. Presence of macrophages and mast cells was analyzed. Cardiomyocyte length of the Dex-treated rats was increased in all three age groups, whereas ventricular weight was reduced. Cardiomyocyte volumes were increased at 50 wk indicating cellular hypertrophy. Collagen content gradually increased with age and was 62% higher in Dex rats at 50 wk. Macrophage focus score and mast cell count were also higher. Neonatal Dex affects normal heart growth resulting in cellular hypertrophy and increased collagen deposition in the adult rat heart. Because previous studies in rats showed premature death, suggesting cardiac failure, cardiovascular follow-Lip of preterm infants treated with glucocorticoids should be considered. (Pediatr Res 66: 74-79, 2009)

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Cardiac & Cardiovascular Systems

Exercise haemodynamics after restrictive mitral annuloplasty for functional mitral regurgitation

Annelieke H. J. Petrus, Laurens F. Tops, Eduard R. Holman, Nina A. Marsan, Jeroen J. Bax, Martin J. Schalij, Paul Steendijk, Robert J. M. Klautz, Jerry Braun

EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING (2020)

Review Education, Scientific Disciplines

Conceptualising spaced learning in health professions education: A scoping review

Marjolein Versteeg, Renee A. Hendriks, Aliki Thomas, Belinda W. C. Ommering, Paul Steendijk

MEDICAL EDUCATION (2020)

Article Neurosciences

CaMKII activity contributes to homeometric autoregulation of the heart: A novel mechanism for the Anrep effect

Jan-Christian Reil, Gert-Hinrich Reil, Arpad Kovacs, Vasco Sequeira, Mark T. Waddingham, Maria Lodi, Melissa Herwig, Shahrooz Ghaderi, Michael M. Kreusser, Zoltan Papp, Niels Voigt, Dobromir Dobrev, Svenja Meyhoefer, Harald F. Langer, Lars S. Maier, Dominik Linz, Andreas Muegge, Mathias Hohl, Paul Steendijk, Nazha Hamdani

JOURNAL OF PHYSIOLOGY-LONDON (2020)

Article Biochemistry & Molecular Biology

Intramuscular short-chain acylcarnitines in elderly people are decreased in (pre-)frail females, but not in males

Marjanne D. van der Hoek, Arie G. Nieuwenhuizen, Ondrej Kuda, Paul Bos, Veronika Paluchova, Lars Verschuren, Anita M. van den Hoek, Robert Kleemann, Nic J. G. M. Veeger, Feike R. van der Leij, Jaap Keijer

FASEB JOURNAL (2020)

Article Education & Educational Research

Refuting misconceptions in medical physiology

M. Versteeg, M. H. van Loon, M. Wijnen-Meijer, P. Steendijk

BMC MEDICAL EDUCATION (2020)

Article Physiology

Biventricular function in exercise during autonomic (thoracic epidural) block

Jeroen Wink, Paul Steendijk, Roula Tsonaka, Rob B. P. de Wilde, Hans J. Friedericy, Jerry Braun, Bernadette Th. Veering, Leon P. H. J. Aarts, Patrick F. Wouters

Summary: The study showed that thoracic epidural anesthesia can reduce systolic function of both left and right ventricles, as well as heart rate, stroke volume, cardiac output, and mean arterial pressure, but has minimal effect on diastolic function. Exercise can increase both systolic and diastolic biventricular function, resulting in higher heart rate, stroke volume, cardiac output, and mean arterial pressure, while decreasing systemic vascular resistance.

EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY (2021)

Article Education, Scientific Disciplines

What Were You Thinking? Medical Students' Metacognition and Perceptions of Self-Regulated Learning

Marjolein Versteeg, Guusje Bressers, Marjo Wijnen-Meijer, Belinda W. C. Ommering, Arnout Jan de Beaufort, Paul Steendijk

Summary: Medical students show differences in their use of metacognitive skills, with a focus on monitoring and to a lesser extent on planning and evaluation. Some students feel no need to develop self-regulated learning skills while others emphasize the need for more insight into their own level of knowledge and competence.

TEACHING AND LEARNING IN MEDICINE (2021)

Article Cardiac & Cardiovascular Systems

Predictors and prognosis of right ventricular function in pulmonary hypertension due to heart failure with reduced ejection fraction

Alexander Schmeisser, Thomas Rauwolf, Thomas Groscheck, Katharina Fischbach, Siegfried Kropf, Blerim Luani, Ivan Tanev, Michael Hansen, Saskia Meissler, Kerstin Schaefer, Paul Steendijk, Ruediger C. Braun-Dullaeus

Summary: This study aimed to explore the coupling ratio of right ventricular and pulmonary artery function in patients with pulmonary hypertension (PH) to predict overall survival. The results showed that an appropriate coupling ratio was associated with higher mid-term survival rates, while an unfavorable coupling ratio was linked to higher mortality rates.

ESC HEART FAILURE (2021)

Article Education & Educational Research

The effect of peer modelling and discussing modelled feedback principles on medical students' feedback skills: a quasi-experimental study

Floris M. van Blankenstein, John F. O'Sullivan, Nadira Saab, Paul Steendijk

Summary: Before the training, there were no significant differences between the groups in feedback functions and aspects. After the training, the group with peer modelling plus discussion gave significantly more positive feedback compared to the group with non-peer modelled examples. However, no other functions or aspects showed significant differences, likely due to large variations in effort put into giving peer feedback by different students.

BMC MEDICAL EDUCATION (2021)

Review Food Science & Technology

Molecular insights into human taste perception and umami tastants: A review

Johan Diepeveen, Tanja C. W. Moerdijk-Poortvliet, Feike R. van der Leij

Summary: Understanding taste is crucial for improving the palatability of protein-rich non-animal-based foods like seaweeds. Different taste receptors in the mouth detect sweet, bitter, umami, sour, and salty tastes. The taste of amino acids is influenced by various factors, and umami ingredients enhance the overall flavor of food, potentially reducing salt and fat consumption.

JOURNAL OF FOOD SCIENCE (2022)

Article Cardiac & Cardiovascular Systems

Pressure-volume loop validation of TAPSE/PASP for right ventricular arterial coupling in heart failure with pulmonary hypertension

Alexander Schmeisser, Thomas Rauwolf, Thomas Groscheck, Siegfried Kropf, Blerim Luani, Ivan Tanev, Michael Hansen, Saskia Meissler, Paul Steendijk, Ruediger C. Braun-Dullaeus

Summary: This study validated the association between TAPSE/PASP and Ees/Ea in HFREF patients, finding TAPSE to be closely related to Ees/Ea. TAPSE and TAPSE/PASP were independently prognostically relevant in patients with PH.

EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING (2021)

Article Education & Educational Research

An Understanding of (Mis)Understanders: Exploring the Underlying Mechanisms of Concept Learning Using Functional Magnetic Resonance Imaging

Marjolein Versteeg, Anne Hafkemeijer, Arnout Jan de Beaufort, Paul Steendijk

Summary: This study did not confirm the involvement of cognitive inhibition in overcoming misconceptions, but instead found significant activation of the putamen in those holding misconceptions, suggesting a role for episodic memory in learners with misconceptions.

MIND BRAIN AND EDUCATION (2021)

Article Education, Scientific Disciplines

Making a Lecture Stick: the Effect of Spaced Instruction on Knowledge Retention in Medical Education

Marnix C. J. Timmer, Paul Steendijk, Sandra M. Arend, Marjolein Versteeg

MEDICAL SCIENCE EDUCATOR (2020)

Meeting Abstract Cardiac & Cardiovascular Systems

Right ventricular pulmonary vascular coupling in secondary tricuspid regurgitation: a pressure volume loop study

A. Schmeisser, T. Rauwolf, T. Groscheck, I Tanev, M. Hansen, S. Meissler, P. Steendijk, R. C. Braun-Dullaeus

EUROPEAN HEART JOURNAL (2020)

Article Education, Scientific Disciplines

Putting post-decision wagering to the test: a measure of self-perceived knowledge in basic sciences?

Marjolein Versteeg, Paul Steendijk

PERSPECTIVES ON MEDICAL EDUCATION (2019)

暂无数据