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https://www.readbyqxmd.com/read/27922007/generation-of-internal-solitary-waves-by-frontally-forced-intrusions-in-geophysical-flows
#1
Daniel Bourgault, Peter S Galbraith, Cédric Chavanne
Internal solitary waves are hump-shaped, large-amplitude waves that are physically analogous to surface waves except that they propagate within the fluid, along density steps that typically characterize the layered vertical structure of lakes, oceans and the atmosphere. As do surface waves, internal solitary waves may overturn and break, and the process is thought to provide a globally significant source of turbulent mixing and energy dissipation. Although commonly observed in geophysical fluids, the origins of internal solitary waves remain unclear...
December 6, 2016: Nature Communications
https://www.readbyqxmd.com/read/27921293/coloniality-and-migration-are-related-to-selection-on-mhc-genes-in-birds
#2
Piotr Minias, Linda A Whittingham, Peter O Dunn
The Major Histocompatibility Complex (MHC) plays a key role in pathogen recognition as a part of vertebrate adaptive immune system. The great diversity of MHC genes in natural populations is maintained by different forms of balancing selection and its strength should correlate with the diversity of pathogens to which a population is exposed and the rate of exposure. Despite this prediction, little is known about how the life-history characteristics affect selection at the MHC. Here, we examined whether the strength of balancing selection on MHC class II genes in birds (as measured with nonsynonymous nucleotide substitutions, dN) was related to their social or migratory behaviour, two life-history characteristics correlated with pathogen exposure...
December 6, 2016: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/27921286/-18-f-fdg-pet-ct-to-differentiate-malignant-necrotic-lymph-node-from-benign-cystic-lesions-in-the-neck
#3
Peymaneh Abadi, Allan Johansen, Christian Godballe, Oke Gerke, Poul Flemming Høilund-Carlsen, Anders Thomassen
OBJECTIVE: Patients presenting with cystic lesions in the neck without obvious signs of malignancy constitute a diagnostic challenge since fine needle aspiration is often insufficient and a diagnosis may not be reached until surgical resection/biopsy is performed. The differential diagnosis of a cystic cervical mass comprises a variety of benign conditions, but malignancy must be ruled out. We examined the diagnostic performance of fluorine-18 fluorodeoxyglucose ((18)F-FDG) PET/CT to identify malignancy...
December 5, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27921192/actual-10-year-survivors-after-resection-of-hepatocellular-carcinoma
#4
Jian Zheng, Deborah Kuk, Mithat Gönen, Vinod P Balachandran, T Peter Kingham, Peter J Allen, Michael I D'Angelica, William R Jarnagin, Ronald P DeMatteo
BACKGROUND: Resection of hepatocellular carcinoma (HCC) offers a chance of cure, but recurrence is common and survival is often limited. The clinical and pathological characteristics of long-term survivors have not been well studied. METHODS: We retrospectively reviewed 212 patients who underwent partial hepatectomy for HCC with curative intent from 1992 to 2006. Fifty patients who survived beyond 10 years were compared with 109 patients who died of recurrence within 10 years...
December 5, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27921029/nanoscale-structure-and-spectroscopic-probing-of-a%C3%AE-1-40-fibril-bundle-formation
#5
Katarzyna M Psonka-Antonczyk, Per Hammarström, Leif B G Johansson, Mikael Lindgren, Bjørn T Stokke, K Peter R Nilsson, Sofie Nyström
Amyloid plaques composed of fibrillar Amyloid-β (Aβ) are hallmarks of Alzheimer's disease. However, Aβ fibrils are morphologically heterogeneous. Conformation sensitive luminescent conjugated oligothiophenes (LCOs) are versatile tools for monitoring such fibril polymorphism in vivo and in vitro. Biophysical methods applied on in vitro generated Aβ fibrils, stained with LCOs with different binding and fluorescence properties, can be used to characterize the Aβ fibrillation in depth, far beyond that possible for in vivo generated amyloid plaques...
2016: Frontiers in Chemistry
https://www.readbyqxmd.com/read/27920879/recurrent-solitary-fibrous-tumor-of-lumbar-spine-with-vertebral-body-involvement-imaging-features-and-differential-diagnosis-with-report-of-a-case
#6
Zerwa Farooq, Zain Badar, Daniel Zaccarini, Felix B Tavernier, Anthony Mohamed, Rajiv Mangla
Solitary fibrous tumors (SFTs) of the spine are exceedingly rare tumors of mesenchymal origin. Most spinal SFTs arise from the thoracic spine, followed by cervical spine, and last lumbar spine with only 6 cases reported in literature. SFTs represent a wide range of neoplasms, ranging from benign to malignant. These tumors can develop a late recurrence, even after a decade or more of initial presentation, requiring long-term follow-up. We present a case of recurrent SFT of the lumbar spine with vertebral body involvement, presenting more than a decade after initial resection...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920875/diffuse-thyroid-metastases-and-bilateral-internal-jugular-vein-tumor-thrombus-from-renal-cell-cancer
#7
Priyanka Jha, Mallika Shekhar, Jennifer Wan, Carina Mari-Aparici
Renal cell cancer rarely metastasizes to the thyroid gland, and it has been reported to present as a solitary mass. We present a case of diffuse thyroid cancer metastases from renal cell cancer. Bilateral internal jugular vein tumor thrombi were also present. To the best of our knowledge, this is the first description of diffuse thyroid metastases from renal cell cancer in the English literature. Renal cell cancer metastases should be considered in the differential of thyroid imaging abnormalities arising in the setting of known renal cell carcinoma, particularly late in the course of disease...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27919135/-bladder-metastasis-of-renal-cell-carcinoma-7-years-after-ex-vivo-partial-nephrectomy-and-auto-transplantation-a-case-report
#8
Takuya Owari, Tomoki Yamamoto, Shinichiro Mizobuchi, Yositaka Itami, Tomonori Nakahama, Yosihiro Matsumoto, Hitoshi Momose
Metastasis of renal cell carcinoma (RCC) to urinary bladder is extremely rare. We report a case of metastasis arising from RCC to the urinary bladder 7 years after treatment of bilateral RCC. A 74-year-old man was diagnosed with bilateral multiple renal tumors (T1aN0M1, PUL, OSS) with two lesions in the right kidney and a solitary lesion of the left kidney in 2008. He underwent laparoscopic radical nephrectomy for the right side in September 2008. The next month, ex vivo partial nephrectomy and auto-transplantation was performed for the left kidney because the tumor was located very close to the collecting system...
November 2016: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/27918529/hsd2-neurons-in-the-hindbrain-drive-sodium-appetite
#9
Brooke C Jarvie, Richard D Palmiter
Sodium-depleted animals develop an appetite for aversive concentrations of sodium. Here we show that chemogenetic activation of aldosterone-sensitive neurons that express 11β-hydroxysteroid dehydrogenase type 2 (HSD2) in the nucleus of the solitary tract is sufficient to drive consumption of sodium-containing solutions in mice, independently of thirst or hunger. These HSD2-positive neurons are necessary for full expression of sodium appetite and have distinct downstream targets that are activated during sodium depletion...
December 5, 2016: Nature Neuroscience
https://www.readbyqxmd.com/read/27918156/-cesarean-section-incidence-and-vaginal-birth-success-rate-at-term-pregnancy-after-myomectomy
#10
L Mekiňová, P Janků, E Filipinská, J Kadlecová, P Ventruba
OBJECTIVE: To compare the incidence of primary and acute cesarean section (CS) and to compare success rate of vaginal delivery. To determine the frequency of maternal complications and evaluation of post-partum condition of the newborn. STUDY DESIGN: Prospective, pilot, cohort study. SETTING: Department of Gynecology and Obstetrics Masaryk University and University Hospital Brno. METHODS: Analysis of patients with physiologically ongoing singleton pregnancy and term delivery, vertex presentation...
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27916254/pigmented-oral-compound-nevus-of-retromolar-area-a-rare-case-report
#11
Virender Gombra, Mandeep Kaur, Keya Sircar, Deepika Bablani Popli
Solitary pigmented melanocytic intraoral lesions of the oral cavity are rare. Oral nevus is a congenital or acquired benign neoplasm. Oral compound nevus constitutes 5.9%-16.5% of all oral melanocytic nevi. The oral compound nevus is commonly seen on hard palate and buccal mucosa and rarely on other intraoral sites. The objective of this article is to present a rare case report of oral compound nevus in the retromolar pad region along with a review of literature. A 22 year old female reported with a solitary black pigmented papule at retromolar pad region which was surgically removed and microscopic investigation confirmed the diagnosis of oral compound nevus...
December 2016: Singapore Dental Journal
https://www.readbyqxmd.com/read/27916040/-progress-of-clinical-application-of-anatomic-resection-and-nonanatomic-resection
#12
Y M Zhang, J Wang
Currently surgical resection is still the best therapeutic method to treat hepatocellular carcinoma, but the effects of different surgical methods on postoperative recurrence of hepatocellular carcinoma are still controversial. According to the technical points and developmental course of anatomical and non-anatomical hepatectomy, this paper analyzes the published literature and draws a conclusion that success of hepatectomy depends on exact balance between residual liver reserve function and radical resection of tumor...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27915433/does-the-tnm-classification-of-solitary-internal-mammary-lymph-node-metastases-in-breast-cancer-still-apply
#13
V Habraken, T J A van Nijnatten, L de Munck, M Moossdorff, E M Heuts, M B I Lobbes, M L Smidt
PURPOSE: TNM classification of solitary internal mammary lymph node metastases (IMLNMs) in breast cancer varies depending on their method of detection: sentinel lymph node biopsy (pN1b) or clinical examination including radiological and/or physical examination (pN2b). This study aimed to evaluate whether there is a difference in prognosis between both groups. METHODS: Data of all patients diagnosed with primary invasive epithelial breast cancer between 2005 and 2008 were obtained from the Netherlands Cancer Registry...
December 3, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27914584/outcome-of-poorly-functioning-kidneys-secondary-to-pujo-preserved-by-pyeloplast
#14
Yasir Ahmad Lone, Ram Samujh, Anish Bhattacharya, Ravi Prakash Kanojia
AIMS: To study the intermediate term to long-term functional status of kidneys with split renal function(SRF) <15% secondary to PUJO which are preserved by pyeloplasty and to find out whether these kidneys can recover or eventually need nephrectomy. METHODS: 24 patients with SRF<15% and undergoing pyeloplasty with or without prior percutaneous nephrostomy (PCN) were studied. Those with associated VUR, B/L disease and redo pyeloplasties were excluded. Follow up USG and EC scan were done at 3, 9 and 18months and yearly thereafter to document functional status after surgery...
November 26, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27913099/benign-but-not-harmless-solitary-fibrous-tumor
#15
Jason Chertoff, Azka Ali, Brandon Dyer, James Wynne
No abstract text is available yet for this article.
November 29, 2016: American Journal of Medicine
https://www.readbyqxmd.com/read/27912795/follicular-thyroid-carcinoma-presenting-as-solitary-liver-metastasis-a-case-report
#16
Azhar J Battoo, Zubaida Rasool, Zahoor A Sheikh, Altaf G Haji
BACKGROUND: Distant metastasis from differentiated thyroid carcinoma at presentation is rare and isolated liver metastasis on presentation is almost unknown. We report a case of primary follicular carcinoma of the thyroid with isolated liver metastasis at presentation. CASE PRESENTATION: A 65-year-old man of Kashmiri origin presented to our tertiary referral center with obstructive jaundice; he was evaluated with magnetic resonance cholangiopancreatography and positron emission tomography-computed tomography...
December 3, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27912247/molecular-evolution-in-insect-societies-an-eco-evo-devo-synthesis
#17
Amy L Toth, Sandra M Rehan
The evolution of eusociality is a perennial issue in evolutionary biology, and genomic advances have fueled steadily growing interest in the genetic changes underlying social evolution. Along with a recent flurry of research on comparative and evolutionary genomics in different eusocial insect groups (bees, ants, wasps, and termites), several mechanistic explanations have emerged to describe the molecular evolution of eusociality from solitary behavior. These include solitary physiological ground plans, genetic toolkits of deeply conserved genes, evolutionary changes in protein-coding genes, cis regulation, and the structure of gene networks, epigenetics, and novel genes...
November 28, 2016: Annual Review of Entomology
https://www.readbyqxmd.com/read/27911954/the-bees-among-us-modelling-occupancy-of-solitary-bees
#18
J Scott MacIvor, Laurence Packer
Occupancy modelling has received increasing attention as a tool for differentiating between true absence and non-detection in biodiversity data. This is thought to be particularly useful when a species of interest is spread out over a large area and sampling is constrained. We used occupancy modelling to estimate the probability of three phylogenetically independent pairs of native-introduced species [Megachile campanulae (Robertson)-Megachile rotundata (Fab.), Megachile pugnata Say-Megachile centuncularis (L...
2016: PloS One
https://www.readbyqxmd.com/read/27911520/role-of-multiple-soliton-interactions-in-the-generation-of-rogue-waves-the-modified-korteweg-de-vries-framework
#19
A V Slunyaev, E N Pelinovsky
The role of multiple soliton and breather interactions in the formation of very high waves is disclosed within the framework of the integrable modified Korteweg-de Vries (MKdV) equation. Optimal conditions for the focusing of many solitons are formulated explicitly. Namely, trains of ordered solitons with alternate polarities evolve to huge strongly localized transient waves. The focused wave amplitude is exactly the sum of the focusing soliton heights; the maximum wave inherits the polarity of the fastest soliton in the train...
November 18, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27911263/contrast-enhanced-us-guided-percutaneous-biopsy-of-anterior-mediastinal-lesions
#20
Dong Yi, Mao Feng, Wang Wen Ping, Ji Zheng Biao, Pei Li Fan
PURPOSE: We aimed to explore the value of contrast-enhanced ultrasonography (CEUS) in guidance of percutaneous biopsy of anterior mediastinal lesions. METHODS: Ninety patients with solitary anterior mediastinal lesions (55 males, 35 females; mean age, 46±4 years) were included. Patients were randomly divided into CEUS group (n=45) and conventional ultrasonography (US) group (n=45). Real-time US-guided core needle (16 G) percutaneous biopsies were performed in all lesions...
December 2, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
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