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https://www.readbyqxmd.com/read/29684807/development-of-urogenital-system-in-the-spix-cavy-a-model-for-studies-on-sexual-differentiation
#1
Amilton Cesar Dos Santos, Alan James Conley, Moacir Franco de Oliveira, Antônio Chaves de Assis Neto
This study documented, for the first time, the morphological patterns of differentiation of male and female genital organs of Spix cavy (Galea spixii) using histological and ultrastructural analyses, with immuno-localization of steroidogenic enzymes, cytochromes P450 aromatase (P450arom) and 17α-hydroxylase/17, 20-lyase (P450c17), involved in the synthesis of estrogens and androgens respectively throughout fetal sexual development. Undifferentiated gonads of Spix cavy develop into ovaries in females after 25 days of gestation (DG), exhibiting P450arom immunoreactivity...
April 13, 2018: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/29678705/hypophysitis-due-to-paranasal-sinusitis-a-neurosurgical-perspective-from-the-developing-world
#2
El Faith Bashir El Malik, Branavan Manoranjan, Olufemi Ajani, Ahmed Zidan
BACKGROUND: and Importance: Sinusitis is a common clinical condition but sphenoid sinusitis is a less common form and even rarer is hypophysitis as a complication of the latter. Clinically, hypophysitis may mimic a pituitary neoplasm in presenting with mass effect and pituitary hormone dysfunction. CLINICAL PRESENTATION: We present five cases of sinusitis-related hypophysitis treated at the Royal Care International Hospital in Khartoum, Sudan. Clinical symptoms at presentation included: headache, fever, ptosis, ophthalmoplegia and history of sinusitis with running nose (nasal discharge)...
April 17, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29661611/nasal-polyposis-or-chronic-olfactory-rhinitis
#3
R Jankowski, C Rumeau, P Gallet, D T Nguyen
The concept of chronic rhinosinusitis with or without polyps is founded on the structural and functional unicity of the pituitary mucosa and its united response to environmental aggression by allergens, viruses, bacteria, pollution, etc. The present review sets this concept against the evo-devo three-nose theory, in which nasal polyposis is distinguished as specific to the olfactory nose and in particular to the non-olfactory mucosa of the ethmoid, which is considered to be not a sinus but rather the skull-base bone harboring the olfactory mucosa...
April 13, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/29629951/immunohistochemical-analysis-of-endothelial-cells-in-vascular-transformation-of-lymph-node-sinuses-vascular-or-lymphatic-differentiation
#4
Basma M Basha, Eric D Hsi
INTRODUCTION: Vascular transformation of sinuses (VTS) is an uncommon and benign lesion, defined by conversion of lymph node sinuses into complex, anatomizing and endothelial-lined channels. Despite the name of VTS, which implies a change in differentiation from lymphatic to vascular endothelium, very few studies have systematically examined VTS with modern immunohistochemical markers commonly used in clinical laboratories. It is unclear whether endothelial cells in VTS display pure vascular or lymphatic differentiation, or both...
April 7, 2018: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/29603333/frontal-sinus-ontogeny-and-covariation-with-bone-structures-in-a-modern-human-population
#5
Marina L Sardi, G Germán Joosten, Cynthia D Pandiani, María Mercedes Gould, Marisol Anzelmo, Fernando Ventrice
In humans, the frontal sinus (FS) is located in the medial part of the supraorbital region, sometimes expanded throughout the frontal squama. It exhibits high morphological variability, but its general form appears to be constrained by surrounding structures. The goal of this study is to analyze FS growth and test for covariation between FS volume and the glabellar region, upper nasal region, bone thickness and endocranial size in a human sample from Argentina. The sample comprises 149 reconstructions derived from computed tomography images of individuals aged 0-31 years...
March 30, 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29570706/intra-operative-biopsy-in-chronic-sinusitis-detects-pathogenic-escherichia-coli-that-carry-fimg-h-fyua-and-agn43-genes-coding-biofilm-formation
#6
Michał Michalik, Alfred Samet, Andrzej Marszałek, Beata Krawczyk, Roman Kotłowski, Alex Nowicki, Tomasz Anyszek, Stella Nowicki, Józef Kur, Bogdan Nowicki
The aim of this study was to investigate whether or not surgical biopsy of sinus tissue in chronic sinusitis, not responsive to treatment, would detect E. coli. We intended to evaluate E. coli virulence genes, therefore dispute the causal role of such an unusual microorganism in chronic sinusitis, as well as consider effective pathogen-targeted therapy. Patients with E. coli isolated by intra-operative puncture biopsy were included in the study. Genetic analysis of E. coli isolates, including phylogenetic grouping and virulence factor characteristics, were done by multiplex PCR...
2018: PloS One
https://www.readbyqxmd.com/read/29550771/atrial-fibrillation-patterns-are-associated-with-arrhythmia-progression-and-clinical-outcomes
#7
Renate B Schnabel, Ladislav Pecen, Daniel Engler, Markus Lucerna, Jean Marc Sellal, Francisco M Ojeda, Raffaele De Caterina, Paulus Kirchhof
OBJECTIVES: Determinants of atrial fibrillation (AF) patterns and of progression of earlier forms to permanent AF, and their relationship with outcome are still poorly understood. METHODS: We examined AF patterns (paroxysmal, persistent and permanent), rate and predictors of AF progression, and outcomes in the PREFER (PREvention oF thromboembolic events-European Registry) in AF. The primary analysis was performed in the PREFER in AF prolongation dataset (n=3223 patients with AF with a complete 1-year follow-up, mean age 72±9 years, 40% women)...
March 17, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29531479/intraoperative-functional-endoscopic-sinus-surgery-training-efficient-teaching-techniques-a-new-method
#8
Henya Sandhaus, Philip G Chen
Introduction: Functional endoscopic sinus surgery is a complex procedure used by otorhinolaryngologists to treat a host of nasal sinus pathologies. Due to the involved nasal anatomy and the nature of the procedure, teaching residents to use an endoscope is challenging. Simulation labs have been helpful but intraoperative instruction can still present difficulty in communication between resident and attending physicians during the teaching process. The purpose of this is to hypothesize a method of teaching intraoperatively that can be used supplemental to or independently of virtual reality teaching...
2018: Clinical Medicine Insights. Ear, Nose and Throat
https://www.readbyqxmd.com/read/29529705/video-assisted-subcutaneous-destruction-of-the-sinus-tract-with-vessel-loop-drainage-as-minimally-invasive-surgical-treatment-for-pilonidal-sinus-disease
#9
Michael Korenkov
The video-assisted subcutaneous destruction of the sinus tract (VADST) is a novel, minimally-invasive technique for the treatment of pilonidal sinus disease (PSD). This is an advancement of the previously described subcutaneous destruction of the sinus tract and the removal of hairs as well as the long-term vessel-loop drainage of the wound channel (DST). Although the first results of this operation seemed to be promising, some of my colleagues felt that the blind approach to this procedure could be its potential "weak point"...
March 12, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29528023/intracranial-fungal-infection-after-solid-organ-transplant
#10
Fikret Şahintürk, Hamiyet Demirkaya, Ümit Akın Dere, Erkin Sönmez, Nur Altınörs, Gökhan Moray, Mehmet Haberal
Neurologic complications after solid-organ transplant reveal a great spectrum of pathologies. Intracranial hemorrhages, cerebral ischemic lesions, infarctions, lymphoproliferative disorders, and infections, including aspergillosis, have been observed after liver transplant. Fungi constitute nearly 5% of all central nervous system infections, mainly occurring in immunocompromised patients. The most common causative agent is Aspergillus species. It presents either as maxillary sinusitis or pulmonary infection...
March 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29523179/a-young-female-presenting-with-heart-failure-secondary-to-eosinophilic-myocarditis-a-case-report-and-review-of-the-literature
#11
Dissanayake Mudiyanselage Priyantha Udaya Kumara Ralapanawa, Kulatunga Wijekoon Mudiyanselage Pramitha Prabhashini Kumarihamy, Miriyalini Sundararajah, Widana Arachchilage Thilak Ananda Jayalath
BACKGROUND: Eosinophilic myocarditis is one of the fatal complications of idiopathic hypereosinophilic syndromes. Given the rarity of this form of myocarditis, it is often under-recognized. We describe a young girl who presented with features of heart failure. To our knowledge, this is the first reported case of eosinophilic myocarditis in a young Sri Lankan female. CASE PRESENTATION: A previously healthy 21 year old Sri Lankan female admitted with shortness of breath for 1 week duration with associated low grade fever and profuse sweating...
March 9, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29507778/clinical-features-of-seizures-after-cerebral-venous-sinus-thrombosis-and-its-effect-on-outcome-among-chinese-han-population
#12
Hongyan Ding, Yanan Xie, Linxin Li, Heling Chu, Yuping Tang, Qiang Dong, Mei Cui
Background and purpose: Clinical features of epileptic seizures after cerebral venous sinus thrombosis (CVST) among Chinese patients are not known, and it is still controversial whether seizures would affect the outcome of CVST. Methods: In a Chinese hospital-based study of consecutive patients with CVST between 2003 and 2015, we described the clinical features of seizures and determined the predictors of seizure onset using multivariable logistic regression analysis...
December 2017: Stroke and Vascular Neurology
https://www.readbyqxmd.com/read/29488088/the-presence-of-occipital-hair-in-the-pilonidal-sinus-cavity-a-triple-approach-to-proof
#13
Dietrich Doll, F Bosche, A Hauser, P Moersdorf, I Sinicina, J Grunwald, F Reckel, M M Luedi
PURPOSE: Hair in the pilonidal sinus is not growing within the sinus cavity, as hair follicles are not present there. Not few pilonidal patients do not have intergluteal hair, which is said to be the causative agent of folliculitis and pilonidal genesis. So, what is the real source of the hair forming the typical pilonidal hair nest? METHODS: A trifold approach was used: First, axial hair strength testing of pilonidal hair and body hair harvested from head, lower back (glabella sacralis), and cranial third of intergluteal fold...
February 28, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29485964/expression-of-rho-kinase-and-its-mechanism-in-the-left-atrial-appendage-in-patients-with-atrial-fibrillation
#14
Yongqing Chen, Fangju Su, Juanping Han, Piqi Jiao, Wenyun Guo
To study the expression of Rho kinase (Rho associated coil forming protein kinase-1, ROCK-1) and its substrate myosin phosphatase target subunit 1 (myosin phosphatase target subunit-1, MYPT-1), connexin 40 (Cx40) and connexin 43 (Cx43) in the left atrial appendage of patients with atrial fibrillation, and explore the role of ROCK signaling pathway in patients with atrial fibrillation and its underlying mechanism. Methods: 40 patients undergoing open heart surgery were divided into two groups; atrial fibrillation group (AF group) and sinus rhythm group (SR group)...
February 19, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29461370/nasal-cavity-actinomycosis-mimicking-rhinolith
#15
Sung-Dong Kim, Deok-Soo Kim, Kyung-Un Choi, Kyu-Sup Cho
Actinomycosis is a subacute-to-chronic bacterial infection caused by filamentous, gram-positive, non-acid-fast, anaerobic-to-microaerophilic bacteria. It is characterized by continuous spread, suppurative and granulomatous inflammation, and formation of multiple abscesses and sinus tracts that may discharge sulfur granules. Although the most common clinical forms of actinomycosis are cervicofacial, involvement of the nose and paranasal sinuses are extremely rare. Furthermore, nasal cavity actinomycosis mimicking rhinolith has not been reported in the literature previously...
February 14, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29457402/-clinical-study-on-negative-pressure-closed-drainage-combined-with-vancomycin-loaded-calcium-sulfate-and-autogenous-bone-in-the-treatment-of-chronic-osteomyelitis
#16
Qiang Li, Shi-Feng Song, Wei Zhang, Guo-Zhi Wu, Li-Zhu Liu
OBJECTIVE: To study the clinical effects of negative pressure closed drainage combined with vancomycin loaded calcium sulfate and autogenous bone in the treatment of chronic osteomyelitis. METHODS: From June 2013 to December 2016, there were 35 cases of chronic osteomyelitis patients in our department, including 23 males and 12 females, ranging in age from 11 to 65 years old, with an average of 34 years old. The course of disease ranged from 8 to 46 months, with an average of 26 months...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29456957/-is-cone-beam-computed-tomography-cbct-a-potential-imaging-tool-in-ent-practice-a-cross-sectional-survey-among-ent-surgeons-in-the-state-of-odisha-india
#17
S Lata, S K Mohanty, S Vinay, Abhaya Chandra Das, Sanjib Das, Priyadarshini Choudhury
This questioner survey aimed about awareness of the Cone Beam Computed Tomography (CBCT) machine and its various clinical applications in ENT, among the ENT surgeons in the state of Odisha. 150 questioner forms on CBCT were distributed to the all the participating ENT surgeons at a state level ENT conference, out of which the response rate was 110. The participants were asked to answer 30 multiple choice questions, which were divided into 3 parts; general information on CBCT, general approach to CBCT and practice related to CBCT...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29376403/role-of-subtalar-arthroscopy-in-operative-treatment-of-sanders-type-2-calcaneal-fractures-using-a-sinus-tarsi-approach
#18
Chul Hyun Park, Doo Hyung Yoon
BACKGROUND: This study was conducted to evaluate the usefulness of subtalar arthroscopy in the operative treatment of Sanders type 2 calcaneus fractures using a sinus tarsi approach. METHODS: Forty-six Sanders type 2 calcaneal fractures were consecutively treated using a sinus tarsi approach. Intraoperative fluoroscopy was used to evaluate fracture reduction in the first 23 patients (fluoroscopy group), and intraoperative fluoroscopy and subtalar arthroscopy were used in the latter 23 patients (arthroscopy group)...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29362697/long-horned-ceratopsidae-from-the-foremost-formation-campanian-of-southern-alberta
#19
Caleb M Brown
The horned Ceratopsidae represent one of the last radiations of dinosaurs, and despite a decade of intense work greatly adding to our understanding of this diversification, their early evolution is still poorly known. Here, two postorbital horncores from the upper Foremost Formation (Campanian) of Alberta are described, and at ∼78.5 Ma represent some of the geologically oldest ceratopsid material. The larger of these specimens is incorporated into a fused supraorbital complex, and preserves a massive, straight, postorbital horncore that is vertical in lateral view, but canted dorsolaterally in rostral view...
2018: PeerJ
https://www.readbyqxmd.com/read/29327312/examining-the-prospective-relationship-between-pre-disaster-respiratory-sinus-arrhythmia-and-post-disaster-posttraumatic-stress-disorder-symptoms-in-children
#20
Amy J Mikolajewski, Michael S Scheeringa
Previous studies have examined the concurrent relationship between posttraumatic stress disorder (PTSD) and a range of psychophysiological variables, including respiratory sinus arrhythmia (RSA). However, there is a lack of research examining the prospective development of trauma symptomatology, and the directionality of the association between RSA level and PTSD has yet to be determined. The current study is the first prospective study to examine whether RSA level and RSA reactivity are risk factors for PTSD symptoms in children...
January 12, 2018: Journal of Abnormal Child Psychology
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