keyword
MENU ▼
Read by QxMD icon Read
search

Embryology

keyword
https://www.readbyqxmd.com/read/28333025/high-progesterone-levels-in-the-beginning-of-icsi-antagonist-cycles-and-clinical-pregnancy-still-a-concern
#1
Tatiana R Panaino, Joyce B da Silva, Maria Augusta T de Lima, Paloma Lira, Patricia C Arêas, Ana Cristina A Mancebo, Marcelo M de Souza, Roberto A Antunes, Maria do Carmo B de Souza
OBJECTIVE: In controlled ovarian hyperstimulation (COH) using antagonist cycles, an incomplete luteolysis could happen after an inefficient previous luteolysis. Since antagonist cycles are frequent today, this study aims to access the impact of serum progesterone in the beginning and at the end of stimulation, and pregnancy outcomes. METHODS: single-center cohort study, 461 fresh embryo transfers in ICSI antagonist cycles. Serum progesterone levels was measured in the beginning of COH (P4i) and on hCG day (P4f) using threshold values of 1...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28330547/-ectopic-thyroid-tissue-with-a-primary-carcinoma
#2
Pernille Hammershøj Jensen, Anette Pedersen Pilt, Hans-Erik Wittendorff
Ectopic thyroid tissue is a result of abnormal embryologic development and migration of the thyroid gland. It has a prevalence of one per 100,000-300,000, and the risk of malignant transformation in ectopic thyroid tissue is rare. We present a rare case of perivesical ectopic papillary thyroid carcinoma in a 76-year-old man with a normal orthotopic thyroid gland. A total thyroidectomy was performed, and the pathology report showed normal thyroid tissue with no neoplastic involvement. The patient was treated with radioactive iodine, and a control scintigraphy was without any signs of activity...
March 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28327268/combined-surgical-removal-of-a-supernumerary-tooth-and-orthodontic-traction-of-an-impacted-maxillary-central-incisor
#3
Leopoldo Cosme-Silva, Lidiane Lucas Costa E Silva, Marina Azevedo Junqueira, Nayara Nery de Oliveira Dias, Ana Beatriz da Silveira Moretti, Vivien Thiemy Sakai
Impaction of permanent maxillary central incisors is a rare condition that can affect esthetics and oral function. The etiology of impaction is multifactorial and may be related to embryologic reasons, hereditary factors, mechanical obstacles, and pathologic elements, such as the presence of supernumerary teeth. The purpose of this report is to discuss the case of a 10-year-old patient who presented an impacted permanent maxillary right central incisor due to a supernumerary tooth. Surgical removal of the supernumerary tooth and orthodontic traction of the impacted central incisor by the closed eruption technique were performed...
September 15, 2016: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28326508/exposure-to-high-ambient-temperatures-alters-embryology-in-rabbits
#4
M L García, M J Argente
High ambient temperatures are a determining factor in the deterioration of embryo quality and survival in mammals. The aim of this study was to evaluate the effect of heat stress on embryo development, embryonic size and size of the embryonic coats in rabbits. A total of 310 embryos from 33 females in thermal comfort zone and 264 embryos of 28 females in heat stress conditions were used in the experiment. The traits studied were ovulation rate, percentage of total embryos, percentage of normal embryos, embryo area, zona pellucida thickness and mucin coat thickness...
March 22, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28321495/aberrant-right-subclavian-artery-arteria-lusoria-without-the-known-associated-nerve-anomaly-an-anomaly-of-the-anomaly-a-clinical-case-and-review-of-the-literature
#5
Maria Rosa Pelizzo, Isabella Merante Boschin, Sotirios Chondrogiannis, Francesco Giammarile, Patrick M Colletti, Domenico Rubello
The "non-recurrent" course of the inferior laryngeal nerve (ILN) is an anatomical variant which must be borne in mind during thyroid surgery. The "non-recurrent" course of the ILN on the right side is associated with the aberrant right subclavian artery (arteria lusoria), and, on the left, is described in situs viscerum inversus. We present a case in which the "arteria lusoria" was not associated with the non-recurrent right ILN. The aims of this paper are to report this "anomaly of the anomaly" to surgeons who may be unaware of it on the one hand and on the other to emphasize that this is the only case so far reported in the literature...
March 20, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28319561/pediatric-enteric-neuropathies-diagnosis-and-current-management
#6
Maggie L Westfal, Allan M Goldstein
PURPOSE OF REVIEW: Neurointestinal diseases are increasingly recognized as causes of significant gastrointestinal morbidity in children. This review highlights the most common pediatric enteric neuropathies and their diagnosis and management, emphasizing insights and discoveries from the most recent literature available. RECENT FINDINGS: The embryologic and histopathologic causes of enteric neuropathies are varied. They range from congenital aganglionosis in Hirschsprung disease, to autoimmune-mediated loss of neuronal subtypes in esophageal achalasia and Chagas disease, to degenerative neuropathies in some cases of chronic intestinal pseudo-obstruction and gastroparesis...
March 17, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28317256/thomas-h-shepard-m-d-pioneer-in-embryology-and-teratology
#7
Alan G Fantel, Janine E Polifka, Godfrey P Oakley
Dr. Thomas H. Shepard died on October 3, 2016 at the age of 93. He was a major figure in the fields of teratology, embryonic and fetal pathology, and pediatrics. He was beloved by his colleagues as he was by the many students and fellows whom he taught, mentored and befriended. His contributions to teratology are extraordinary and he is greatly missed. © 2017 Wiley Periodicals, Inc.
March 20, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28300884/congenital-hemangioma-in-spondylocostal-dysostosis-a-novel-association
#8
Victor Michael Salinas-Torres
Congenital hemangioma is a benign tumor caused by dysfunction in embryogenesis and vasculogenesis, which progresses during fetal life to manifest as fully developed at birth. Although hemangiomas are the most common tumor of infancy, rapidly involuting congenital hemangioma has not been described in spondylocostal dysostosis. I report the novel association of congenital hemangioma and spondylocostal dysostosis in a Mexican newborn female patient with neural tube defects. Given the embryological relationship between skin and nervous system, I surmise that this association is not coincidental...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28292844/embryoids-organoids-and-gastruloids-new-approaches-to-understanding-embryogenesis
#9
REVIEW
Mijo Simunovic, Ali H Brivanlou
Cells have an intrinsic ability to self-assemble and self-organize into complex and functional tissues and organs. By taking advantage of this ability, embryoids, organoids and gastruloids have recently been generated in vitro, providing a unique opportunity to explore complex embryological events in a detailed and highly quantitative manner. Here, we examine how such approaches are being used to answer fundamental questions in embryology, such as how cells self-organize and assemble, how the embryo breaks symmetry, and what controls timing and size in development...
March 15, 2017: Development
https://www.readbyqxmd.com/read/28289869/topographical-relations-between-the-gantzer-s-muscle-and-neurovascular-structures
#10
Kiwook Yang, Soo-Jung Jung, Hyunsu Lee, In-Jang Choi, Jae-Ho Lee
PURPOSE: Gantzer's muscle (GM) is an additional muscle in the forearm, which develops as an accessory head of the flexor pollicis longus or the flexor digitorum profundus. The study aimed to determine the topography of the GM and to define the topographical relationship between the GM and the neurovascular structures surrounding it. METHODS: After confirming the presence of GM, its topography and the neurovascular structures were analyzed to determine the correlation between them in 73 upper limbs...
March 13, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28282781/fetal-brain-anomalies-detection-during-the-first-trimester-expanding-the-scope-of-antenatal-sonography
#11
Eldad Katorza, Itai Gat, Nir Duvdevani, Nir Meller, Noam Pardo, Eran Barzilay, Reuven Achiron
PURPOSE: The purpose of this study was to describe fetal brain anomalies identified during nuchal translucency (NT) examination and their clinical management. MATERIALS AND METHODS: In this retrospective study, we evaluated charts of pregnant women performed the first trimester scan (FTS) between 1.1.2011 and 31.12.14 in a tertiary referral center. Study population consisted of 952 patients scheduled for routine NT scan for aneuploidy screening between 11.0 and 13...
February 15, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28279769/lumbar-facet-tropism-a-comprehensive-review
#12
REVIEW
Fernando Alonso, Christina M Kirkpatrick, William Jeong, Christian Fisahn, Sameera Usman, Tarush Rustagi, Marios Loukas, Jens R Chapman, Rod J Oskouian, R Shane Tubbs
Scattered reports exist in the medical literature regarding facet tropism. However, this finding has had mixed conclusions regarding its origin and impact on the normal spine. Herein, we review the anatomy, embryology, biomechanics, and pathology related to lumbar facet tropism. Facet tropism is most commonly found at L4-L5 vertebral segments and there is some evidence that this condition may lead to facet degenerative spondylolisthesis, intervertebral disc disease, and other degenerative conditions.
March 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28274349/sex-hormones-and-acne
#13
Qiang Ju, Tao Tao, Tingting Hu, Ayşe Serap Karadağ, Safaa Al-Khuzaei, WenChieh Chen
The skin is an endocrine organ with the expression of metabolizing enzymes and hormone receptors for diverse hormones. The sebaceous gland is the main site of hormone biosynthesis, especially for androgens, and acne is the classical androgen-mediated dermatosis. In sebocytes, conversion of 17-hydroxyprogesterone directly to dihydrotestosterone bypassing testosterone has been demonstrated, while type II 17β-hydroxysteroid dehydrogenase can inactivate the action of testosterone and dihydrotestosterone. The androgen receptor-dependent genomic effect of dihydrotestosterone on sebocytes is confirmed...
March 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28273957/morphological-variations-of-middle-ear-ossicles-and-its-clinical-implications
#14
Ritaban Saha, Phalguni Srimani, Ardhendu Mazumdar, Sibani Mazumdar
INTRODUCTION: The middle ear ossicles form a semi rigid chain in the middle of the ear for conduction and amplification of sound waves from the tympanic membrane to the inner ear. Although, our knowledge of the ear ossicles dates back to the 15(th) century, and various studies have been carried out on their morphometry, morphology, anomalies, embryology, function and structure throughout the world, information about the morphology of middle ear ossicles is meagre in Indian subjects. AIM: To find out the morphological variations of middle ear ossicles of right and left sides...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28255147/intrapancreatic-accessory-spleen-an-eluding-diagnosis
#15
K H Teoh, S Balraj, S R Navarasi
Intrapancreatic accessory spleen (IPAS) is a benign anomaly of splenic embryology and a rare cause of pancreatic pseudotumour. Here, we report a case of a 70-year-old Malay lady whose IPAS was discovered incidentally during her surveillance computed tomography for her underlying left lower lung fibrosis. Radiologically, the lesion mimicked a neuroendocrine pancreatic tumour and was only diagnosed pathologically as IPAS after surgery. In conclusion, recognising IPAS as a differential for enhancing pancreatic mass allows us to exhaust all non-invasive diagnostic means to diagnose this benign lesion...
February 2017: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28251330/oculo-auriculo-vertebral-spectrum-going-beyond-the-first-and-second-pharyngeal-arch-involvement
#16
Brotto Davide, Manara Renzo, Ghiselli Sara, Lovo Elisa, Mardari Rodica, Toldo Irene, Castiglione Alessandro, Schifano Giovanni, Stritoni Valentina, Bovo Roberto, Trevisi Patrizia, Martini Alessandro
INTRODUCTION: Intracranial vascular, bone, and brain abnormalities might be observed in oculo-auriculo-vertebral spectrum (OAVS) patients even though these structures do not derive embryologically from the first and second pharyngeal arches. This neuroimaging study investigated their type, frequency and phenotype correlations among OAVS patients. METHODS: Thirty-five OAVS patients (mean-age 4.8 ± 6.0 years; age range 0.3-30, 14 females) underwent head CT (all patients) and brain MRI (32 patients); 19 patients had a more severe phenotype (Goldenhar syndrome)...
March 1, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28251012/ectopic-thyroid-tissue-in-the-mediastinum-characterized-by-histology-and-functional-imaging-with-i-123-spect-ct
#17
Jed Hummel, Jason Wachsmann, Kelley Carrick, Orhan K Oz, Dana Mathews, Fangyu Peng
Ectopic thyroid tissue is a rare entity and when discovered it is typically along the pathway of embryologic migration of the thyroid. We present a case of incidental finding of ectopic thyroid tissue within mediastinum in a 61-year-old female patient with a history of total thyroidectomy for thyroiditis and nodules. The patient presented to emergency room with cough and right chest pain and underwent a chest computed tomographic angiogram (CTA) to exclude pulmonary embolism as part of chest pain workup. One right paratracheal mediastinal soft tissue nodule was visualized on the images of CTA...
2017: Case Reports in Radiology
https://www.readbyqxmd.com/read/28247061/embryology-of-pera-peraceae-malpighiales-systematics-and-evolutionary-implications
#18
Rafael de Olivera Franca, Orlando Cavalari De-Paula
Pera is a neotropical genus that currently belongs to the family Peraceae. This circumscription resulted from an inclusion of the Rafflesiaceae between the old tribe Pereae and all other Euphorbiaceae, and wherein Pereae was elevated to family rank making Euphorbiaceae monophyletic again. These changes are necessary although Rafflesiaceae are holoparasitic with extremely reduced vegetative bodies and large flowers while Peraceae and Euphorbiaceae have well developed vegetative parts and reduced flowers. As the embryology of Peraceae was poorly known, and embryological processes are conservative, we studied the embryology of Pera glabrata, searching for similarities between Peraceae, Rafflesiaceae, and Euphorbiaceae that could support this grouping...
February 28, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28246332/metabolic-origins-of-spatial-organization-in-the-tumor-microenvironment
#19
Carlos Carmona-Fontaine, Maxime Deforet, Leila Akkari, Craig B Thompson, Johanna A Joyce, Joao B Xavier
The genetic and phenotypic diversity of cells within tumors is a major obstacle for cancer treatment. Because of the stochastic nature of genetic alterations, this intratumoral heterogeneity is often viewed as chaotic. Here we show that the altered metabolism of cancer cells creates predictable gradients of extracellular metabolites that orchestrate the phenotypic diversity of cells in the tumor microenvironment. Combining experiments and mathematical modeling, we show that metabolites consumed and secreted within the tumor microenvironment induce tumor-associated macrophages (TAMs) to differentiate into distinct subpopulations according to local levels of ischemia and their position relative to the vasculature...
February 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28242327/cracking-the-barcode-of-fullerene-like-cortical-microcolumns
#20
Arturo Tozzi, James F Peters, Ottorino Ori
Artificial neural systems and nervous graph theoretical analysis rely upon the stance that the neural code is embodied in logic circuits, e.g., spatio-temporal sequences of ON/OFF spiking neurons. Nevertheless, this assumption does not fully explain complex brain functions. Here we show how nervous activity, other than logic circuits, could instead depend on topological transformations and symmetry constraints occurring at the micro-level of the cortical microcolumn, i.e., the embryological, anatomical and functional basic unit of the brain...
February 24, 2017: Neuroscience Letters
keyword
keyword
49363
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"