Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Vitamins01:30

Vitamins

2.5K
Vitamins, derived from the Latin word for life, are essential organic substances required in small quantities for optimal growth and overall well-being. Unlike other organic nutrients, vitamins don't act as sources of energy or building materials but rather facilitate these nutrients' utilization by the body. Vitamins are predominantly coenzymes, assisting enzymes in specific chemical actions, like the oxidation of glucose for energy involving B vitamins. Most vitamins are not produced...
2.5K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

924
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
924
Leveling Effect01:29

Leveling Effect

1.4K
In acid-base chemistry, the leveling effect refers to the limitation imposed by the solvent on the strength of acids and bases in solution. When a base stronger than the solvent's conjugate base is used, it deprotonates the solvent until the base is entirely consumed, making it ineffective against weaker acids. Conversely, an acid stronger than the solvent's conjugate acid protonates the solvent until the acid is depleted, rendering it ineffective against weaker bases. Essentially, the...
1.4K
Role of Skin in Vitamin D Synthesis01:23

Role of Skin in Vitamin D Synthesis

7.8K
The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
7.8K
Mineral, Vitamin and Water Absorption01:27

Mineral, Vitamin and Water Absorption

1.5K
Electrolytes are essential minerals and ions primarily obtained from the diet and absorbed through the gastrointestinal tract. Most electrolytes are absorbed in the small intestine. While the absorption of iron and calcium primarily occurs in the duodenum, calcium is also absorbed in the jejunum and ileum. In these regions, passive diffusion contributes to its absorption alongside active transport mechanisms in the duodenum. These ions can exit the enterocytes through specialized active...
1.5K
High-Level and Low-Level Awareness01:19

High-Level and Low-Level Awareness

713
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
713

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Physics-informed data augmentation to simulate low dose CT scans: Application to lung nodule detection.

Medical physics·2026
Same author

E-Prem checklist-driven strategy to improve outcomes in extremely preterm and low birth weight infants: a quasi-experimental study at a national referral hospital in Indonesia.

BMJ open·2025
Same author

Reducing device-related pressure injuries in high-risk neonates receiving nasal continuous positive airway pressure: a quality improvement study.

Archives of disease in childhood. Fetal and neonatal edition·2025
Same author

Effects of photobiomodulation and caffeine treatment on acute kidney injury in a hypoxic ischemic neonatal rat model.

Physiological reports·2023
Same author

The Menstrual Disorder of Teenagers (MDOT) Study No. 2: Period ImPact and Pain Assessment (PIPPA) Tool Validation in a Large Population-Based Cross-Sectional Study of Australian Teenagers.

Journal of pediatric and adolescent gynecology·2021
Same author

United States' experience in nuchal translucency measurement: variation according to provider characteristics in over five million ultrasound examinations.

Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology·2021

Related Experiment Video

Updated: Jan 29, 2026

Transcutaneous Microcirculatory Imaging in Preterm Neonates
06:27

Transcutaneous Microcirculatory Imaging in Preterm Neonates

Published on: December 31, 2015

8.5K

Do Maternal Vitamin D Levels Influence Vitamin D Levels in Preterm Neonates?

M Panda1, J McIntosh2, T Chaudhari1,3

  • 1Dept of Neonatology, Centenary Hospital for Women and Children, Canberra Hospital, Woden, ACT, Australia.

International Journal of Pediatrics
|February 5, 2019
PubMed
Summary

Vitamin D deficiency is common in mothers and preterm infants. Screening and individualized supplementation can improve Vitamin D status and reduce deficiency risks.

More Related Videos

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS
12:48

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

Published on: December 27, 2013

66.7K
Author Spotlight: Unraveling Vitamin A Transport Mechanisms — Linking Liver Receptors to Vision Health Through RBPR2 and RBP4 Interactions
08:18

Author Spotlight: Unraveling Vitamin A Transport Mechanisms — Linking Liver Receptors to Vision Health Through RBPR2 and RBP4 Interactions

Published on: October 4, 2024

1.5K

Related Experiment Videos

Last Updated: Jan 29, 2026

Transcutaneous Microcirculatory Imaging in Preterm Neonates
06:27

Transcutaneous Microcirculatory Imaging in Preterm Neonates

Published on: December 31, 2015

8.5K
PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS
12:48

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS

Published on: December 27, 2013

66.7K
Author Spotlight: Unraveling Vitamin A Transport Mechanisms — Linking Liver Receptors to Vision Health Through RBPR2 and RBP4 Interactions
08:18

Author Spotlight: Unraveling Vitamin A Transport Mechanisms — Linking Liver Receptors to Vision Health Through RBPR2 and RBP4 Interactions

Published on: October 4, 2024

1.5K

Area of Science:

  • Neonatalogy
  • Maternal-Fetal Medicine
  • Nutritional Science

Background:

  • Vitamin D insufficiency is a global health concern.
  • Preterm neonates are at higher risk for Vitamin D deficiency due to limited maternal transfer and altered metabolism.
  • Optimal Vitamin D levels are crucial for neonatal growth, bone health, and immune function.

Purpose of the Study:

  • To determine the prevalence of Vitamin D deficiency/insufficiency in mothers of preterm neonates (≤32 weeks gestation).
  • To assess Vitamin D levels in preterm neonates at birth and during early infancy.
  • To evaluate the appropriateness of current Vitamin D supplementation for preterm neonates.

Main Methods:

  • Prospective study conducted in a Neonatal Intensive Care Unit.
  • Maternal Vitamin D levels measured within 3-4 days postpartum.
  • Neonatal Vitamin D levels measured at birth, 3-4 weeks, and 6-8 weeks of age.
  • Data collected on maternal and neonatal demographics, and Vitamin D intake from nutrition and supplements.

Main Results:

  • 40% of mothers and 36% of preterm neonates exhibited Vitamin D deficiency/insufficiency at birth.
  • Vitamin D levels in neonates increased from birth to 6 weeks of age.
  • 10% of initially deficient neonates remained deficient at 6 weeks.
  • Median daily Vitamin D intake at 6 weeks was 826.5 IU.

Conclusions:

  • High prevalence of Vitamin D deficiency/insufficiency observed in mothers and preterm neonates.
  • Current supplementation may not be sufficient to correct deficiency in all preterm infants.
  • Routine screening and individualized Vitamin D supplementation strategies are recommended for mothers and preterm infants.