Low serum 25-hydroxyvitamin D levels in migraine are not related to headache frequency: A case-control study in patients with high-frequency/chronic migraine.

Background: Serum 25-hydroxyvitamin D (25[OH]D) concentrations have been shown to be low in patients with migraine, but results are controversial regarding the current role of vitamin D in migraine severity. Using a case-control design, we aimed to evaluate serum 25(OH)D levels in a group of females with high-frequency episodic migraine/chronic migraine (HF/CM) and analyze its association with headache frequency and serum calcitonin gene-related peptide (CGRP) levels.

Methods: Serum 25(OH)D levels were measured in 97 females with HF/CM (age 48.

Disorders of Lymphatic Architecture and Flow in Critical Illness.

Objectives: To provide a narrative review of disordered lymphatic dynamics and its impact on critical care relevant condition management.

Data Sources: Detailed search strategy using PubMed and Ovid Medline for English language articles (2013-2023) describing congenital or acquired lymphatic abnormalities including lymphatic duct absence, injury, leak, or obstruction and their associated clinical conditions that might be managed by a critical care medicine practitioner.

Study Selection: Studies that specifically addressed abnormalities of lymphatic flow and their management were selected.

Genetic selection for postweaning growth rate shows no relevant negative impact on reproductive performance in breeding rabbit does.

Genetic selection for growth rate has often been related with potential negative effects on various reproductive traits across different species. Using rabbit as a model, this study has evaluated for the first time how genetic selection for growth rate has affected feed efficiency, resource allocation, blood traits, reproductive performance and survival during five reproductive cycles in rabbit does. To this end, we used 88 reproductive rabbit females from two vitrified and rederived populations of the same paternal line, differing only in 18 generations of genetic selection for growth rate (n = 44 for R19V and n = 44 for RV37V).

Steering perovskite precursor solutions for multijunction photovoltaics.

Multijunction photovoltaics (PVs) are gaining prominence owing to their superior capability of achieving power conversion efficiencies (PCEs) beyond the radiative limit of single-junction cells, where improving narrow bandgap tin-lead perovskites is critical for thin-film devices. With a focus on understanding the chemistry of tin-lead perovskite precursor solutions, we herein find that Sn(II) species dominate interactions with precursors and additives and uncover the exclusive role of carboxylic acid in regulating solution colloidal properties and film crystallisation, and ammonium in improving film optoelectronic properties. Materials that combine these two function groups, amino acid salts, considerably improve the semiconducting quality and homogeneity of perovskite films, surpassing the effect of the individual functional groups when introduced as part of separate molecules.