A study is presented of the histological structure and growth rate of the growth plate at the distal end of the femur in normal children. From a comparison of quantitative histological information from post-mortem specimens with measurements on serial radiographs it is estimated that the distal growth plate contributes about 66% of the total longitudinal growth of the bone. The marked differences between rodent and man indicate that caution is required in extrapolating data from these animals to man.
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http://dx.doi.org/10.1136/pgmj.53.622.433 | DOI Listing |
J Bone Miner Res
January 2025
Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD.
Growth-plate (GP) injures in limbs and other sites can impair GP function and cause deceleration of bone growth, leading to progressive bone lengthening imbalance, deformities and/or physical discomfort, decreased motion and pain. At present, surgical interventions are the only means available to correct these conditions by suppressing the GP activity in the unaffected limb and/or other bones in the ipsilateral region. Here, we aimed to develop a pharmacologic treatment of GP growth imbalance that involves local application of nanoparticles-based controlled release of a selective retinoic acid nuclear receptor gamma (RARγ) agonist drug.
View Article and Find Full Text PDFCleft Palate Craniofac J
January 2025
Sleep Medicine, Stanford University, Stanford, CA, USA.
It's interesting to note that despite clinical improvements in upper airway dimensions, the maxillary, mandibular, and mandibular body lengths remained smaller than those of controls. This finding may represent an underlying neurocristopathy, which represents a deficiency in the population of neural crest cells available in the embryonic maxillary and mandibular processes de novo. Indeed, it is known that craniofacial dimensions in infants with malformations, such as cleft palate, are often smaller when compared to non-cleft counterparts.
View Article and Find Full Text PDFJ Vis Exp
January 2025
Charlottetown Research and Development Center, Agriculture and Agri-Food Canada; Department of Chemistry, University of Prince Edward Island;
The iChip isolation technique uses an in-situ isolation device that increases the cultivability of previously unculturable microorganisms. Microorganisms are an important source of novel chemistries and potentially bioactive molecules. However, only 1% of environmental microorganisms can be cultured using conventional laboratory methods.
View Article and Find Full Text PDFElife
January 2025
Instituto Gulbenkian de Ciência, Rua da Quinta Grande, Oeiras, Portugal.
During the trunk to tail transition the mammalian embryo builds the outlets for the intestinal and urogenital tracts, lays down the primordia for the hindlimb and external genitalia, and switches from the epiblast/primitive streak (PS) to the tail bud as the driver of axial extension. Genetic and molecular data indicate that Tgfbr1 is a key regulator of the trunk to tail transition. Tgfbr1 has been shown to control the switch of the neuromesodermal competent cells from the epiblast to the chordoneural hinge to generate the tail bud.
View Article and Find Full Text PDFPlant Dis
January 2025
Hebei Academy of Agricultural and Forestry Sciences, Plant Protection Institute, 437 Dongguan Street, Baoding, Hebei, China, 071000.
Strawberry () is an important economic crop in Hebei, China. In May 2023, root rot was observed in strawberry plantations (cultivar 'Benihoppe') in Shijiazhuang (37°57'23″N, 115°16'34″E), Hebei, China. The incidence of the disease reached up to 30% in the field.
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