Pituitary tumor apoplexy presenting as infective meningoencephalitis

ConclusionWe highlighted how pituitary apoplexy may mimic the clinical findings of an infectious meningoencephalitis, learning points on how clinical assessment can aid earlier diagnosis and the importance of considering this differential diagnosis, particularly with the associated morbidity and mortality.
Source: Interdisciplinary Neurosurgery - Category: Neurosurgery Source Type: research

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Publication date: Available online 22 September 2020Source: Academic RadiologyAuthor(s): Waqas T. Qureshi, Rohit Malhotra, Eric J. Schmidlin, Mohamed Ahmed, Amartya Kundu, Abdul Moiz Hafiz, Jennifer Walker, Nikolaos Kakouros
Source: Academic Radiology - Category: Radiology Source Type: research
Publication date: Available online 21 September 2020Source: Academic RadiologyAuthor(s): Alireza Zali, Mohammad-Reza Sohrabi, Ali Mahdavi, Nastaran Khalili, Morteza Sanei Taheri, Ali Maher, Mohammadmehdi Sadoughi, Afshin Zarghi, Seyed Ali Ziai, Abbas Arjmand Shabestari, Mehrdad Bakhshayeshkaram, Hamidreza Haghighatkhah, Babak Salevatipour, Alireza Abrishami, Masoomeh Raoufi, Pooneh Dehghan, Arash Khameneh Bagheri, Reza Jalili Khoshnoud, Khatereh Hanani
Source: Academic Radiology - Category: Radiology Source Type: research
CONCLUSION: Within the limitations of the present study, attachments with PEEK and PEKK inserts combined with titanium patrices are favorable for long-term use, both for orthogonal and tilted implants. All three attachment systems showed a high variability of the retentive forces at baseline and for subsequent cycles. This should be taken into consideration for clinical use. PMID: 32957206 [PubMed - in process]
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
In conclusion, this study explores the physiological in-situ response of knee cartilage and meniscus, based on stress MRI, and as a function of loading intensity, joint alignment, histological tissue status, and biomechanical properties, as another step towards clinical implementation. PMID: 32957197 [PubMed - in process]
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
Abstract Aponeuroses are stiff sheath-like components of the muscle-tendon unit that play a vital role in force transmission and thus locomotion. There is clear importance of the aponeurosis in musculoskeletal function, but there have been relatively few studies of aponeurosis material properties to date. The goals of this work were to: 1) perform tensile stress-relaxation tests, 2) perform planar biaxial tests, 3) employ computational modeling to the data from 1 to 2, and 4) perform scanning electron microscopy to determine collagen fibril organization for aponeurosis tissue. Viscoelastic modeling and statistical...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
Abstract All levels of the unique hierarchical structure of bone, consisting of collagen and hydroxyapatite crystals at the nanoscale to osteon/lamellae structures at the microscale, contribute to its characteristic toughness and material properties. Elements of bone's density and size contribute to bone quantity (or bone mass), whereas elements of bone's material composition, material properties, internal structure, and organization describe bone quality. Bone quantity and quality can be degraded by factors such as aging, disease, treatments, and irradiation, compromising its ability to resist fracture and sustai...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
Abstract Three-dimensional (3D) printing is an efficient technique for the fabrication of electronic devices. It also enables the use conductive of biomaterials in various applications, such as implants and flexible devices. Designing a new bioink is extremely challenging. For bioelectronics devices, bioink materials should be printable, flexible, conductive, harmless to cells, and sufficiently strong to maintain their shape when immersed in nutrients or under pressure. Over the past few years, several flexible conductive bioinks have been developed that are based on composite pastes containing a biopolymer and co...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
Abstract Postmenopausal osteoporosis causes severe loss of bone quantity and quality in limb bone but has a lesser effect on jaw bone. Thus, the objective of this study was to examine whether ovariectomy (OVX) and mastication alter the regional variation of jaw bone characteristics. Sprague-Dawley female rats (6 months) were given a bilateral OVX or a sham operation (SHAM) (n = 10 for each group). After 2 months post-OVX, the hemi-mandible from each rat was dissected. A micro-computed tomography based mean, standard deviation (SD), the lower and upper 5th percentile (Low5 and High5) values of tissue mine...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
The objectives of this in-vitro study were to investigate the influence of Deep Margin Elevation (DME) and the preparation design (cusp coverage) on the fracture strength and repairability of CAD/CAM manufactured lithium disilicate (LS2) restorations on molars. Sound extracted human molars (n = 60) were randomly divided into 4 groups (n = 15) (inlay without DME (InoD); inlay with DME (IWD); onlay without DME (OnoD); onlay with DME (OnWD)). All samples were aged (1.2 × 106 cycles of 50N, 8000 cycles of 5-55 °C) followed by oblique static loading until fracture. Fracture strength ...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
This study aimed to investigate the effect of different printing directions (0°, 45°, and 90°) of stereolithography (SLA) 3D printed dentures on stress distribution. Artificial mucosa was fabricated to fit a maxillary edentulous model, which was scanned to generate a standard tessellation language (STL) file. Subsequently, the upper denture was designed using computer-aided design (CAD) software, output as an STL file (master data), and set in three different printing directions (0°, 45°, and 90°). It was printed by the SLA 3D printer using photopolymer resin (n=6, in each printing direction). The s...
Source: Journal of the Mechanical Behavior of Biomedical Materials - Category: Materials Science Authors: Tags: J Mech Behav Biomed Mater Source Type: research
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