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https://www.readbyqxmd.com/read/29017679/pulmonary-papillary-adenoma-report-of-two-cases
#1
Xin Li Wang, Gui Jin Jiang, Xue Zhu Zhang, Liang Ming Chu, Ying Cao
Pulmonary papillary adenoma is a rare tumor. Two cases without any clinical symptoms were enrolled in our hospital. Both cases were incidentally detected in pulmonary area by imaging. Pathological examination revealed well-circumscribed nodules consisting of papillary growth of cuboidal to low columnar epithelial cells lining the surface of the fibrovascular stroma. Immunohistochemistry (IHC) staining showed that the lining cells were diffusely positive for TTF-1, CK, p63, CK7, and Napsin A. The Ki-67 proliferation index was approximately 2%...
September 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28979031/perianal-eccrine-syringofibroadenoma
#2
Atul Madhusudan Dongre, Vivek Vilas Nikam, Hari Shivaram Pathave, Nitya Malladi
Eccrine syringofibroadenoma (ESFA) is a rare eccrine ductal adnexal tumor. It shows variable presentations as solitary or multiple nodular lesions arranged in different patterns. It is most commonly seen in middle-aged to elderly patients, and most common sites include the extremities. Classic histopathological findings show anastomosing cords and strands of uniform cuboidal cells surrounded by fibrovascular stroma. Herein, we report a case of reactive ESFA which developed on the perianal region of a 31-year-old man...
September 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28974030/cufusion-accurate-real-time-camera-tracking-and-volumetric-scene-reconstruction-with-a-cuboid
#3
Chen Zhang, Yu Hu
Given a stream of depth images with a known cuboid reference object present in the scene, we propose a novel approach for accurate camera tracking and volumetric surface reconstruction in real-time. Our contribution in this paper is threefold: (a) utilizing a priori knowledge of the precisely manufactured cuboid reference object, we keep drift-free camera tracking without explicit global optimization; (b) we improve the fineness of the volumetric surface representation by proposing a prediction-corrected data fusion strategy rather than a simple moving average, which enables accurate reconstruction of high-frequency details such as the sharp edges of objects and geometries of high curvature; (c) we introduce a benchmark dataset CU3D that contains both synthetic and real-world scanning sequences with ground-truth camera trajectories and surface models for the quantitative evaluation of 3D reconstruction algorithms...
October 1, 2017: Sensors
https://www.readbyqxmd.com/read/28960404/histochemical-and-surface-ultrastructural-characteristics-of-the-nasal-cavity-of-laughing-dove
#4
S M Farouk, S A Hassan, M A Emam
Ten apparently healthy, adult laughing doves were used to document detailed histological, histochemical and surface ultrastructural features of the nasal cavity and to investigate the structure-function relationship of the nasal cavity in this species. We observed that the nasal cavity of the laughing dove was composed of three main regions: nasal vestibule, respiratory and olfactory. Each region presented a characteristic epithelial lining. The epithelium varied along the nasal vestibule from keratinized stratified squamous rostrally to non-keratinized stratified squamous in the middle and stratified cuboidal in the caudal region of the nasal vestibule...
September 27, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28949097/cuboid-ni2p-as-a-bifunctional-catalyst-for-efficient-hydrogen-generation-from-hydrolysis-of-ammonia-borane-and-electrocatalytic-hydrogen-evolution
#5
Wei Luo, Yeshaung Du, Chao Liu, Gongzhen Cheng
The design of high-performance catalysts for hydrogen generation is highly desirable for the upcoming hydrogen economy. Herein, we report the colloidal synthesis of nanocuboid Ni2P via thermal decomposition of nickel chloride hexahydrate (NiCl2∙6H2O) and trioctylphosphine (TOP). The obtained nanocuboid Ni2P are characterized by powder X-ray diffraction (XRD), transmission electron microscope (TEM), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma-atomic emission spectroscopy (ICP-AES)...
September 26, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28945015/membrane-fusion-mediated-intracellular-delivery-of-lipid-bilayer-coated-mesoporous-silica-nanoparticles
#6
Jian Yang, Jing Tu, Gerda E M Lamers, René C L Olsthoorn, Alexander Kros
Protein delivery into the cytosol of cells is a challenging topic in the field of nanomedicine, because cellular uptake and endosomal escape are typically inefficient, hampering clinical applications. In this contribution cuboidal mesoporous silica nanoparticles (MSNs) containing disk-shaped cavities with a large pore diameter (10 nm) are studied as a protein delivery vehicle using cytochrome-c (cytC) as a model membrane-impermeable protein. To ensure colloidal stability, the MSNs are coated with a fusogenic lipid bilayer (LB) and cellular uptake is induced by a complementary pair of coiled-coil (CC) lipopeptides...
September 25, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28942547/electron-microscopic-evaluation-of-anterior-lens-epithelium-in-patients-with-idiopathic-congenital-cataract
#7
Kemal Tekin, Yasemin Ozdamar Erol, Merve Inanc, Mustafa Fevzi Sargon, Cigdem Ulku Can, Sibel Polat, Pelin Yilmazbas
PURPOSE: To investigate the ultrastructure of the lens epithelial cells (LECs) in patients with idiopathic congenital cataract. METHODS: This is a prospective interventional study. The anterior lens capsules (aLC: basement membrane and associated LECs) were taken from 16 eyes of 12 consecutive patients who were diagnosed as having idiopathic congenital cataracts. The aLCs were obtained from cataract surgery and prepared for transmission electron microscopy (TEM)...
September 23, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28926392/flexible-adult-acquired-flatfoot-deformity-comparison-between-weight-bearing-and-non-weight-bearing-measurements-using-cone-beam-computed-tomography
#8
Cesar de Cesar Netto, Lew C Schon, Gaurav K Thawait, Lucas Furtado da Fonseca, Apisan Chinanuvathana, Wojciech B Zbijewski, Jeffrey H Siewerdsen, Shadpour Demehri
BACKGROUND: The 3-dimensional nature of adult acquired flatfoot deformity can be challenging to characterize using radiographs. We tested the hypothesis that measurements on weight-bearing (WB) cone-beam computed tomography (CT) images were more useful for demonstrating the severity of the deformity than non-weight-bearing (NWB) measurements. METHODS: We prospectively enrolled 12 men and 8 women (mean age, 52 years; range, 20 to 88 years) with flexible adult acquired flatfoot deformity...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28919159/host-control-of-human-papillomavirus-infection-and-disease
#9
REVIEW
John Doorbar
Most human papillomaviruses cause inapparent infections, subtly affecting epithelial homeostasis, to ensure genome persistence in the epithelial basal layer. As with conspicuous papillomas, these self-limiting lesions shed viral particles to ensure population level maintenance and depend on a balance between viral gene expression, immune cell stimulation and immune surveillance for persistence. The complex immune evasion strategies, characteristic of high-risk HPV types, also allow the deregulated viral gene expression that underlies neoplasia...
August 12, 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28916905/small-cholangiolocellular-carcinoma-that-was-difficult-to-distinguish-from-cholangiocellular-carcinoma-a-case-report
#10
Norihiro Ishii, Kenichiro Araki, Takahiro Yamanaka, Tadashi Handa, Mariko Tsukagoshi, Takamichi Igarashi, Akira Watanabe, Norio Kubo, Shinichi Aishima, Hiroyuki Kuwano, Ken Shirabe
BACKGROUND: Cholangiolocellular carcinoma (CoCC) is thought to be derived from hepatic progenitor cells. Because of its origin, CoCC has diverse clinicopathological and imaging findings. Here, we report a case of small CoCC that was difficult to diagnose preoperatively. CASE PRESENTATION: A 62-year-old woman was confirmed with a small liver nodule in the left lobe 2 years after a sustained virological response of hepatitis C virus. The size of the nodule was 11...
September 15, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28915048/x-ray-free-electron-laser-radiation-damage-through-the-s-state-cycle-of-the-oxygen-evolving-complex-of-photosystem-ii
#11
Muhamed Amin, Mikhail Askerka, Victor S Batista, Gary W Brudvig, M R Gunner
The oxygen-evolving complex (OEC) catalyzes water-splitting through a reaction mechanism that cycles the OEC through the "S-state" intermediates. Understanding structure/function relationsships of the S-states is crucial for elucidating the water-oxidation mechanism. Serial femtosecond X-ray crystallography has been used to obtain radiation damage-free structures. However, it remains to be established whether "diffraction-before-destruction" is actually accomplished or if significant changes are produced by the high-intensity X-ray pulses during the femtosecond scattering measurement...
September 28, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28914464/expression-of-caveolin-1-in-the-interfollicular-but-not-the-follicle-associated-epithelial-cells-in-the-bursa-of-fabricius-of-chickens
#12
Ildikó Bódi, Krisztina Minkó, Orsolya Fölker, Zsófia Benyeda, Balázs Felföldi, Attila Magyar, Anna Kiss, Vilmos Palya, Imre Oláh
The surface epithelium of the bursa of Fabricius consists of interfollicular (IFE) and follicle-associated epithelium (FAE). The IFE comprises (i) cylindrical-shaped secretory cells (SC) and (ii) cuboidal basal cells (BCs). The FAE provides histological and two-way functional connections between the bursal lumen and medulla of the follicle. We used a carbon solution and anti-caveolin-1 (Cav-1) to study the endocytic activity of FAE. Carbon particles entered the intercellular space of FAE, but the carbon particles were not internalized by the FAE cells...
September 15, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28912304/e-cadherin-and-zeb2-modulate-trophoblast-cells-differentiation-during-placental-development-in-pigs
#13
Linjun Hong, Kun Han, Kejia Wu, Ruize Liu, Ji Huang, Joan K Lunney, Shuhong Zhao, Mei Yu
It is one of the important events that trophoblast cells within the placental folds differentiate into two types that differ in cell shape during placental development in pigs. This study showed that all the trophoblast cells were in similar shape between Yorkshire and Chinese Meishan pigs on day 26 of gestation, thereafter, the trophoblast cells located at the top of the placental folds became high columnar while those cells at the base of the placental folds were cuboidal on day 50 of gestation. Additionally, on day 95 of gestation, all the trophoblast cells in Meishan pigs became cuboidal, but the trophoblast cells located at the top of the placental folds in Yorkshire pigs still remained columnar...
September 14, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28899426/benign-metastasizing-leiomyoma-presenting-as-multiple-cystic-pulmonary-nodules-a-case-report
#14
Yeong Hun Choe, So Yeon Jeon, Yoon Chae Lee, Myung Ja Chung, Seung Yong Park, Yong Chul Lee, So Ri Kim
BACKGROUND: Benign metastatic leiomyoma (BML) is an extremely rare disease. Although uterine leiomyomas are benign histologically, they can metastasize to distant sites. While the incidence is very low, the lung is the organ most frequently affected by BML. Pulmonary BML usually presents as numerous well-defined nodules of various sizes, while the cavitary or cystic features in the nodules are rarely observed on radiologic images. CASE PRESENTATION: A 52-year-old woman complained of cough and dyspnea for one month...
September 12, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28888068/thymic-enteric-type-adenocarcinoma-a-case-report-with-cytological-features
#15
Marie Tamai, Mitsuaki Ishida, Yusuke Ebisu, Hisashi Okamoto, Chika Miyasaka, Chisato Ohe, Yoshiko Uemura, Tomohito Saito, Tomohiro Murakawa, Koji Tsuta
Primary thymic adenocarcinoma is an extremely rare tumor, and thymic enteric type adenocarcinoma has recently been proposed as a distinct pathological entity. Herein, we report the first cytological description of thymic enteric type adenocarcinoma. A 29-year-old Japanese female without a significant past medical history was found to have an abnormal chest shadow. Chest computed tomography demonstrated a well-circumscribed tumor in the anterior mediastinum, and thymectomy was performed. The Papanicolaou staining of the touch smear of the resected tumor demonstrated tightly cohesive epithelial cell clusters in a necrotic background...
September 9, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28887760/sialadenoma-papilliferum-analysis-of-seven-new-cases-and-review-of-the-literature
#16
Craig B Fowler, Douglas D Damm
Sialadenoma papilliferum (SP) is a rare benign salivary gland neoplasm that comprises from 0.4 to 1.2% of all salivary gland tumors. The tumor is so named because of its microscopic resemblance to the syringocystadenoma papilliferum, an uncommon benign tumor of sweat gland origin. The purpose of this paper is to report the clinical and microscopic features of seven new cases of SP and combine them with cases previously reported in the English language literature to further define this unusual lesion. Combining our cases with acceptable cases from the literature, the palate (especially the hard palate) was the most common site, with 80% of the cases occurring in this location...
September 8, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28881050/pulmonary-sclerosing-pneumocytoma-remains-a-diagnostic-challenge-using-frozen-sections-a-clinicopathological-analysis-of-59-cases
#17
Cheng-Han Yang, Li-Yu Lee
AIMS: Using intraoperative frozen sections to diagnose pulmonary sclerosing pneumocytoma is always challenging. However, an accurate diagnosis is needed to guide surgical management and prevent unnecessary treatment. The aim of this study was to investigate the most frequently misdiagnosed histological patterns and evaluate the potential diagnostic pitfalls of using frozen sections. METHODS AND RESULTS: We retrospectively reviewed 59 cases of sclerosing pneumocytoma that underwent an intraoperative frozen section examination...
September 7, 2017: Histopathology
https://www.readbyqxmd.com/read/28861630/an-integrated-inverse-model-experimental-approach-to-determine-soft-tissue-three-dimensional-constitutive-parameters-application-to-post-infarcted-myocardium
#18
Reza Avazmohammadi, David S Li, Thomas Leahy, Elizabeth Shih, João S Soares, Joseph H Gorman, Robert C Gorman, Michael S Sacks
Knowledge of the complete three-dimensional (3D) mechanical behavior of soft tissues is essential in understanding their pathophysiology and in developing novel therapies. Despite significant progress made in experimentation and modeling, a complete approach for the full characterization of soft tissue 3D behavior remains elusive. A major challenge is the complex architecture of soft tissues, such as myocardium, which endows them with strongly anisotropic and heterogeneous mechanical properties. Available experimental approaches for quantifying the 3D mechanical behavior of myocardium are limited to preselected planar biaxial and 3D cuboidal shear tests...
August 31, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28844303/calcaneal-ewing-s-sarcoma-with-skip-metastases-to-tarsals-and-lymph-node-involvement-a-case-report
#19
Koray Şahin, Serkan Bayram, Ahmet Salduz
Ewing's sarcoma (ES) represents the second most common primary malignant tumor of bone of children and occurs rarely in the bones of the foot. Dissemination to regional lymph nodes and skip metastases to adjacent bones are thought to be uncommon. We report a case of a 19-year-old female with the diagnosis of ES of the right calcaneus. Six months earlier, she had presented to the hospital with a history of ankle sprain and was treated with analgesics and ice application. Despite the treatment, the pain over the ankle persisted, her foot swelled progressively, and a mass evolved on the lateral side of the foot...
August 22, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28842847/visual-adaptations-of-the-eye-of-the-gilthead-sea-bream-sparus-aurata
#20
Neveen E R El-Bakary, Mohamed M A Abumandour
The current investigation represents the morphological description of the adaptation of gilthead sea bream Sparus aurata to its environmental conditions. For the achievement of this study twelve mature fishes were used for gross, light and electron microscope examinations. The cornea is consists of three layers; an anterior stratified cuboidal epithelium, bowman layer, and a dermal stroma. A mucoid layer located between the dermal stroma and the anterior part of the scleral cornea, while the iridescent layer located between the anterior and the posterior scleral stroma...
August 26, 2017: Veterinary Research Communications
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