Morphological development of ovaries in ostrich ( Struthio camelus ) embryo

Abstract The aim of this study was to investigate the histological development of right and left ovaries in ostrich embryo. The research was carried out on the ovaries of 20-, 26-, 30-, and36-day-old embryos. At first, anatomical observation was done, and then 5 μm sections of ovaries were stained by hematoxylin and eosin, periodic acid Schiff, and Masson’s trichrome staining methods. Some ovaries embedded in Epon and 1 μm thickness sections were stained with toluidine blue and examined using regular optical microscopy. The results showed ovaries had an unequal growth resulting into a larger left ovary with obvious cortex and medulla. Cortex consisted of germinal cells and germinal epithelium along with somatic cells. At 26 days, the left ovarian cortex was developed with increasing the size of secondary sex cords and numerous germ cells. At more advanced stages of development, germ cells grew in size and contained more granules in the cytoplasm. In the right ovary cortex, there was none visible, and germinal epithelium had a thin layer. Lacunar channels, blood vessels, and interstitial cells along with germ cells were present in the medulla of both ovaries. The medullary germ cells were observed as solitary cells or group of several cells. In general, we demonstrate the histological changes in the left and right ovaries of ostrich from 20- to 36-day-old embryos. In addition, this work is the first study that provides histological evidence ...
Source: Comparative Clinical Pathology - Category: Pathology Source Type: research

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This study aims to examine the effectiveness of the postural treatment of the Mézières method on elite rhythmic gymnastics athletes with low back pain. DESIGN: Double-blind, randomized, controlled trial. SETTING: The sports hall of "Puente Tocinos," Murcia, Spain. PARTICIPANTS: Ninety gymnastics athletes were randomized into 2 parallel groups (intervention: n = 39; control: n = 51), of whom 98.9% were women (women = 89; man = 1). INTERVENTION: The Mézières method postural therapy was implemented. It lasted about 60 minutes in repeated sessions of 2 to 3 meetings per wee...
Source: Journal of Sport Rehabilitation - Category: Sports Medicine Tags: J Sport Rehabil Source Type: research
CONCLUSIONS: Delayed activation of the VM registered in females determines an increase in anterior shear force, which is an important risk factor for incurring an ACL injury. This testing protocol becomes adequate for the screening of high-risk athletes and for targeting interventions to specific imbalances that may increase injury risk. PMID: 31711040 [PubMed - as supplied by publisher]
Source: Journal of Sport Rehabilitation - Category: Sports Medicine Tags: J Sport Rehabil Source Type: research
Authors: Fyock M, Cortes N, Hulse A, Martin J Abstract Clinical Scenario: Patellofemoral pain (PFP) is a common knee injury in recreational adult runners, possibly caused by faulty mechanics. One possible approach to reduce this pain is to retrain the runner's gait. Current research suggests that no definitive gold standard treatment for PFP exists. Gait retraining utilizing visual feedback may reduce PFP in both the short and long term. Clinical Question: In adult runners diagnosed with PFP, does gait retraining with real-time visual feedback lead to a decrease in pain? Summary of Key Findings: A literature search...
Source: Journal of Sport Rehabilitation - Category: Sports Medicine Tags: J Sport Rehabil Source Type: research
Publication date: Available online 13 November 2019Source: Materials Today CommunicationsAuthor(s): Dian Putri Hastuti, Wardah Amalia, Zakiah Priska, Pekik Nurwantoro, SholihunAbstractStabilities and atomic geometries in germanene multivacancies has been studied. We carry out eight configurations, mono-, di-, tri-, tetra-, penta-, hexa-, hepta-, and octavacancies by using the density-functional-theory calculations (DFT). We calculate formation and dissociation energies to analyze the stability by finding the magic numbers. Magic numbers are the number of vacancy belonging to stable configurations. We find that di-, tetra-,...
Source: Materials Today Communications - Category: Materials Science Source Type: research
Publication date: Available online 12 November 2019Source: Materials Today CommunicationsAuthor(s): Manorama Tripathi, Surekha Parthasarathy, Prasun Kumar RoyAbstractThis paper deals with the fabrication of non-woven polyurea nanofibers through an electrospinning process and evaluation of their mechanical properties under dynamic conditions. Polyurea is finding increasing applications for protection against dynamic loads like blast and ballistics. Processing polyurea into nanofibers can further improve their properties, especially with respect to mechanical properties and high surface areas, expanding their field of applic...
Source: Materials Today Communications - Category: Materials Science Source Type: research
Conclusion: HTX-019 administered by 2-minute injection has a tolerable safety profile in patients with cancer, representing a viable method of HTX-019 administration for CINV prevention. PMID: 31709853 [PubMed - as supplied by publisher]
Source: Expert Opinion on Drug Safety - Category: Drugs & Pharmacology Tags: Expert Opin Drug Saf Source Type: research
Authors: Gabella G Abstract All the cells of rat detrusor muscle fall into one of five ultrastructural types: muscle cells, fibroblasts, axons and glia, and vascular cells (endothelial cells and pericytes). The tissue is ~79% cellular and 21% non-cellular. Muscle cells occupy 72%, nerves ~4% (1/3 axons, 2/3 glia), and fibroblast>3% of space. Muscle cells (up to 6 µm across and ~600 µm long, packed to almost 100,000 per mm2) have surface-to-volume ratio of 2.4 µm2/µm3 ~93% of cell volume is contractile apparatus, 3.1% mitochondria and 2.5% nucleus. Cell profiles are irregular but section...
Source: Journal of Smooth Muscle Research - Category: Research Tags: J Smooth Muscle Res Source Type: research
Source: Autonomic Neuroscience: Basic and Clinical - Category: Neuroscience Source Type: research
Journal Name: Clinical Chemistry and Laboratory Medicine (CCLM) Issue: Ahead of print
Source: Clinical Chemistry and Laboratory Medicine - Category: Laboratory Medicine Source Type: research
Journal Name: Clinical Chemistry and Laboratory Medicine (CCLM) Issue: Ahead of print
Source: Clinical Chemistry and Laboratory Medicine - Category: Laboratory Medicine Source Type: research
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