Read by QxMD icon Read


Lei Hu, Feiyu Qin, Andrea Sanson, Liang-Feng Huang, Zhao Pan, Qiang Li, Qiang Sun, Lu Wang, Fangming Guo, Umut Aydemir, Yang Ren, Chengjun Sun, Jinxia Deng, Giuliana Aquilanti, James M Rondinelli, Jun Chen, Xianran Xing
The local symmetry, beyond the averaged crystallographic structure, tends to bring unusual performances. Negative thermal expansion is a peculiar physical property of solids. Here, we report the delicate design of the localized symmetry breaking to achieve the controllable thermal ex-pansion in ScF3 nano-scale frameworks. Intriguingly, an iso-tropic zero thermal expansion is concurrently engineered by localized symmetry breaking, with a remarkably low coefficient of thermal expansion of about +4.0×10-8/K up to 675K...
March 20, 2018: Journal of the American Chemical Society
Wilson Huanca-Mamani, Raúl Arias-Carrasco, Steffany Cárdenas-Ninasivincha, Marcelo Rojas-Herrera, Gonzalo Sepúlveda-Hermosilla, José Carlos Caris-Maldonado, Elizabeth Bastías, Vinicius Maracaja-Coutinho
Long non-coding RNAs (lncRNAs) have been defined as transcripts longer than 200 nucleotides, which lack significant protein coding potential and possess critical roles in diverse cellular processes. Long non-coding RNAs have recently been functionally characterized in plant stress-response mechanisms. In the present study, we perform a comprehensive identification of lncRNAs in response to combined stress induced by salinity and excess of boron in the Lluteño maize, a tolerant maize landrace from Atacama Desert, Chile...
March 20, 2018: Genes
Louise Ewing, Elizabeth Pellicano, Harriet King, Laura Lennuyeux-Comnene, Emily K Farran, Annette Karmiloff-Smith, Marie L Smith
Unusual patterns of fixation behavior in individuals with autism spectrum disorder during face tasks hint at atypical processing strategies that could contribute to diminished face expertise in this group. Here, we use the Bubbles reverse correlation technique to directly examine face-processing strategies during identity judgments in children with and without autism, and typical adults. Results support a qualitative atypicality in autistic face processing. We identify clear differences not only in the specific features relied upon for face judgments, but also more generally in the extent to which they demonstrate a flexible and adaptive profile of information use...
March 20, 2018: Developmental Neuropsychology
Jarosław D Skowroński, Jerzy Pręgowski, Paweł Tyczyński, Łukasz Kalińczuk, Adam Witkowski
No abstract text is available yet for this article.
2018: Kardiologia Polska
Gokmen Kahilogullari, Fatih Yakar, Eyup Bayatli, Esra Erden, Cem Meco, Agahan Unlu
INTRODUCTION: Dermoid cysts (DCs) are unusual benign congenital intracranial tumors that typicallyarise in the midline and form as a result of abnormal sequestration of ectodermal cells during neural tubeformation. In all age groups, endoscopic approaches are preferable for the removal of sellar lesions. A 6-year-old girl with recurrent meningitis underwent endoscopic endonasal surgery forsellar DC. CONCLUSION: To the best of our knowledge, we present the first case of a suprasellar DC in a pediatric patient that was removed endoscopically...
March 20, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Waltraud Friesenbichler, Angela Schumich, Ingrid Simonitsch-Klupp, Renate Panzer-Grümayer, Oskar Haas, Georg Mann, Michael Dworzak
Myelofibrosis is associated with a wide variety of neoplastic and non-neoplastic bone marrow diseases, predominately myeloproliferative neoplasms and acute myeloid leukemia. The following case documents an unusual patient presenting with pancytopenia and acute myelofibrosis accompanied by precursor B-cell acute lymphoblastic leukemia. This very rare clinical presentation raises questions concerning the relationship between concurrent occurrence of acute myelofibrosis and acute lymphoblastic leukemia.
March 19, 2018: Journal of Pediatric Hematology/oncology
Bernard G Lee, Ye Chen, Saul Rajak, Dinesh Selva
Intradiploic epidermoid cysts are uncommon in the orbital walls and typically present with chronic headaches. We present the unusual presentation of a 46-year-old man where a long-standing intradiploic mass of the orbital roof led to acute onset of pain and mechanical ptosis. Computed tomography and magnetic resonance imaging revealed an intradiploic cystic mass within the orbital roof. The cystic mass was extirpated and histological examination confirmed the diagnosis of an epidermoid cyst. This case illustrates the potential of long-standing intradiploic epidermoid cysts in producing an acute presentation...
March 20, 2018: Orbit
Victoria Huckstadt, María E Heis Mendoza, Angélica Moresco, María G Obregon
Pai syndrome is a very rare congenital disorder characterized by medial cleft lip, nasal and facial cutaneous polyps, and pericallosal lipoma. Broad phenotypic variability exists in this condition. Neurodevelopment is usually normal. Up to date 42 cases have been reported in the literature. Different types of inheritance have been proposed, but most cases are sporadic. No gene has been identified. We report two cases with Pai syndrome, one of them with novel clinical findings as vertebral segmentation defects and choroidal osteoma...
April 1, 2018: Archivos Argentinos de Pediatría
Irene Baquedano Lobera, Raquel Bernadó Fonz, Sara Laliena Aznar, Matilde Bustillo Alonso, Carmelo Guerrero Laleona
The main clinical manifestation of human herpesvirus 6 is exanthema subitum (also known as roseola infantum) and febrile syndrome. Central nervous system manifestations are not unusual in herpesvirus 6 infection, and even though the pathophysiology is not clear, they need to be early diagnosed and treated in order to avoid potentially serious damage. We present the case of an immunocompetent 2-year-old girl with encephalitis as a complication of herpesvirus 6 infection. We want to emphasize the significance of an early diagnosis and treatment in order to prevent further complications due to the central nervous system extension...
April 1, 2018: Archivos Argentinos de Pediatría
Chao-Feng Chang, Tien-Yu Huang, Te-Yu Lin
No abstract text is available yet for this article.
March 20, 2018: Internal and Emergency Medicine
Carlo Pallotto, Gioele Simonte, Fabio Verzini, Massimo Lenti, Franco Baldelli, Daniela Francisci, Maurizio Fiorio
Propionibacterium acnes is a member of the human microbiota that has been recently associated with late-onset infections of indwelling devices, especially shoulder prosthesis. Aortic graft infection are rare events with significant morbidity and mortality. Here, we describe the case of an abdominal aortic graft infection due to P. acnes with an unusual early onset. A review of the recent English language literature has been added.
March 20, 2018: Journal of Chemotherapy
Min Wang, Dandan Chen, Qunfei Zhao, Wen Liu
The species Streptomyces lincolnensis is known as a producer of lincomycin A, a clinically important lincosamide antibiotic with activity against Gram-positive bacteria. Here, we report that S. lincolnensis produces a new cysteate-containing lactone product, cysteoamide (1), which arises from non-ribosomal peptide synthetase-programmed sequential assembly of the monomers phenylacetic acid, valine, cysteate, threonine, β-hydroxyleucine and β-alanine and subsequent intramolecular cyclization to form a lactone ring...
March 20, 2018: Journal of Organic Chemistry
Nicola Erdsack, Sophy R McCully Phillips, Sentiel A Rommel, D Ann Pabst, William A McLellan, John E Reynolds
Florida manatees (Trichechus manatus latirostris) possess an unusual suite of adaptations to accommodate both a fully aquatic lifestyle and an herbivorous diet, including a low metabolic rate and a very limited thermoneutral zone. Their relatively high lower critical temperature of around 20 °C suggests strong sensitivity to cold, thereby limiting their distribution to tropical and subtropical waters. "Cold stress syndrome" affects and kills Florida manatees every year during intense or prolonged cold weather, posing one of the major threats to manatees...
March 19, 2018: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
Saraj K Singh, Kapil Jain, Vijendra Kumar Jain
PURPOSE: Purely cystic brain stem epidermoid is a rare diagnosis among all brainstem cystic lesions. Further, it is very rare in pediatric age group. METHODS: Here, we are reporting a rare case of completely cystic brain stem epidermoid in a child. The patient presented with clinical features of brain stem involvement. MRI brain was suggestive of cystic brain stem lesion. RESULTS: Patient went through surgical procedure. Final diagnosis of epidermoid cyst was confirmed on histopathological report...
March 19, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Anas Boulemden, Gemma L Malin, Suzanne V F Wallace, Amr Mahmoud, William H T Smith, Adam A Szafranek
We report the case of a 44-year-old pregnant woman who was diagnosed with symptomatic severe mitral stenosis that did not respond to optimal medical therapy and balloon valvuloplasty. After a multidisciplinary team discussion on the timing and risks of interventions and postoperative optimization of peripartum anticoagulation, the patient underwent mechanical mitral valve replacement during the 2nd trimester of pregnancy. The outcome was excellent for the mother and the infant. This case emphasizes the importance of a multidisciplinary approach in managing unusual cases...
February 2018: Texas Heart Institute Journal
Shogo Mori, Allan H Pang, Taylor A Lundy, Atefeh Garzan, Oleg V Tsodikov, Sylvie Garneau-Tsodikova
Interrupted adenylation domains are enigmatic fusions, in which one enzyme is inserted into another to form a highly unusual bifunctional enzyme. We present the first crystal structure of an interrupted adenylation domain that reveals a unique embedded methyltransferase. The structure and functional data provide insight into how these enzymes N-methylate amino acid precursors en route to nonribosomal peptides.
March 19, 2018: Nature Chemical Biology
Benjamin M Fontaine, Kevin S Martin, Jennifer M Garcia-Rodriguez, Claire Jung, Laura Briggs, Jessica E Southwell, Xin Jia, Emily E Weinert
Regulation of nucleotide and nucleoside concentrations is critical for faithful DNA replication, transcription, and translation in all organisms, and has been linked to bacterial biofilm formation. Unusual 2',3'-cyclic nucleotide monophosphates (2',3'-cNMPs) recently were quantified in mammalian systems, and previous reports have linked these nucleotides to cellular stress and damage in eukaryotes, suggesting an intriguing connection with nucleotide/nucleoside pools and/or cyclic nucleotide signaling. This work reports the first quantification of 2',3'-cNMPs in Escherichia coli and demonstrates that 2',3'-cNMP levels in E...
March 19, 2018: Biochemical Journal
Michael Young, Matthew Putty, Keith Schaible
We present an exceptionally rare case of spontaneous otogenic intraventricular pneumocephalus which resulted in a decline in mentation and neurologic deficit. The case involves a 58-year-old female who was subsequently treated with ventriculostomy and middle fossa craniotomy with repair of bony defect and dural closure. This case demonstrates an unusual presentation of pneumocephalus necessitating ventriculostomy in addition to the traditional repair of a cerebrospinal fluid fistula.
March 16, 2018: World Neurosurgery
D Sylva, L Tamayo, G Mosquera-Klinger, J J Carvajal, J C Pérez
No abstract text is available yet for this article.
March 16, 2018: Revista de Gastroenterología de México
Ting-Ying Lee, Chia-Wen Wang, Teng-Wei Chen, De-Chuan Chan, Guo-Shiou Liao, Hsiu-Lung Fan
BACKGROUND: Gallbladder cancer is unusually seen but can result in highly mortality rate. It makes challenge to diagnose for clinicians due to present asymptomatic or non-specific clinical presentation including abdominal pain, anorexia. It usually also accompanies with cholelithiasis (incidence is 1-2%) and incidentally detected by radiologic examination such as ultrasound, computed tomography or intra-operative intervention accidentally. Gallbladder cancer results in highly fatal malignancy because it is difficult to early detect...
March 20, 2018: BMC Research Notes
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"