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https://www.readbyqxmd.com/read/28937971/puzzle-maker-in-smb6-accompany-type-valence-fluctuation-state
#1
Qi Wu, Liling Sun
In recent years, studying the Kondo insulator SmB6, a strongly correlated electron material that has been puzzling the community for decades, has again become an attractive topic due to the discovery of its unusual metallic surface state coexisting with the bulk insulating state. Many efforts have been made to understand the microphysics in SmB6, but some puzzles that have been hotly debated and argued have not been solved. In this article, based on the latest progress made in our high-pressure studies on SmB6 and the accumulating results reported by other groups, we propose a notion named the 'accompany-type valence fluctuation state', which possibly coexists with the bulk Kondo insulating ground state of SmB6...
September 22, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28937966/malusides-novel-glucosylceramides-isolated-from-apple-pomace-malus-domestica
#2
Mathias Reisberg, Norbert Arnold, Andrea Porzel, Reinhard H H Neubert, Birgit Dräger
Three new glucosylceramides (GluCers) named malusides I-III (1-3) were isolated from apple (cultivars of Malus domestica) pomace (fruit material remaining after juice extraction). An unusual oxo/hydroxy group pattern within the sphingadienine (d18:2) type sphingoid base was observed. All compounds contained the same α-hydroxylated fatty acid (h16:0) and a β-D-glucose moiety. Their structures were assigned on the basis of one- and two-dimensional (1D and 2D) nuclear magnetic resonance (NMR) spectroscopic analyses and mass spectrometry (MS) measurements...
September 22, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/28937773/probing-the-hiv-1-ncp7-nucleocapsid-protein-with-site-specific-gold-i-phosphine-complexes
#3
Raphael E F de Paiva, Zhifeng Du, Erica J Peterson, Pedro P Corbi, Nicholas P Farrell
In this work, we examined a series of thiophilic Au(I) compounds based on [Au(L)(PR3)] (L = Cl(-), 4-dimethylaminopyridine (dmap); R= ethyl (Et), cyclohexyl (Cy)) for chemoselective auration of the C-terminal HIV nucleocapsid protein NCp7 F2 and the "full" HIV NCp7 (NC, zinc finger (ZnF)) as probes of nucleocapsid topography. The choice of phosphine allowed electronic and steric effects to be considered. The use of the heterocycle "leaving group" allowed us to study the effect of possible π-stacking with the essential tryptophan residue of NC on the reactivity and selectivity, mimicking the naturally occurring interaction between the zinc finger and nucleic acids...
September 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28937739/applications-of-iridium-catalyzed-asymmetric-allylic-substitution-reactions-in-target-oriented-synthesis
#4
Jianping Qu, Günter Helmchen
Metal catalyzed allylic substitution is a cornerstone of organometallic and synthetic chemistry. Enantioselective versions have been developed with catalysts derived from transition metals, most notably molybdenum, nickel, ruthenium, rhodium, iridium, palladium, and copper. The palladium- and the iridium-catalyzed versions have turned out to be particularly versatile in organic synthesis because of the very broad scope of the nucleophile and great functional group compatibility. Assets of the iridium-catalyzed reaction are the formation of branched, chiral products from simple monosubstituted allylic substrates, high degrees of regio- and enantioselectivity, and use of modular, readily available chiral ligands...
September 22, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28937669/in-situ-solid-state-nmr-and-xrd-studies-of-the-ador-process-and-the-unusual-structure-of-zeolite-ipc-6
#5
Samuel A Morris, Giulia P M Bignami, Yuyang Tian, Marta Navarro, Daniel S Firth, Jiří Čejka, Paul S Wheatley, Daniel M Dawson, Wojciech A Slawinski, David S Wragg, Russell E Morris, Sharon E Ashbrook
The assembly-disassembly-organization-reassembly (ADOR) mechanism is a recent method for preparing inorganic framework materials and, in particular, zeolites. This flexible approach has enabled the synthesis of isoreticular families of zeolites with unprecedented continuous control over porosity, and the design and preparation of materials that would have been difficult-or even impossible-to obtain using traditional hydrothermal techniques. Applying the ADOR process to a parent zeolite with the UTL framework topology, for example, has led to six previously unknown zeolites (named IPC-n, where n = 2, 4, 6, 7, 9 and 10)...
October 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28937439/langerhans-cell-histiocytosis-with-clinical-and-histologic-features-of-hidradenitis-suppurativa-brief-report-and-review
#6
Jessica E Kalen, Divya Shokeen, Mona Mislankar, Michael Wangia, Kiran Motaparthi
Langerhans cell histiocytosis (LCH) is an uncommon histiocytic disorder in adults. Clinically, this rare entity can mimic other dermatologic conditions, including hidradenitis suppurativa. A case of LCH is reported with clinical and histologic features of hidradenitis suppurativa, along with a review of these unusual findings. Clinical dermatologists and dermatopathologists benefit from awareness of this unique presentation, which may prompt earlier identification and diagnosis of adult patients with LCH.
September 11, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28937425/a-case-of-lymphomatoid-papulosis-type-e-with-an-unusual-exacerbated-clinical-course
#7
Irena E Belousova, Liubov Kyrpychova, Alexey V Samtsov, Dmitry V Kazakov
Lymphomatoid papulosis (LyP) type E is a recently delineated variant characterized by the occurrence of large necrotic "eschar"-like lesions displaying microscopically angioinvasive and angiodestructive infiltrates composed of CD30 lymphocytes, frequently coexpressing CD8. In contrast to other LyP variants where patients develop multiple lesions, most patients with LyP type E present with few lesions (often 1 or 2 at a given time). In this article, we describe a 34-year-old man with LyP type E with an exacerbated clinical course characterized by the occurrence of almost a hundred of lesions...
September 12, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28937386/bilateral-seminomas-coexisting-with-adenomatoid-tumor-an-unusual-occurrence
#8
Suchi Mittal, Rathindra Sarangi, Sunila Jain
Coexistence of bilateral seminomas and adenomatoid tumor is rare. We encountered an interesting case of bilateral testicular seminomas along with a paratesticular nodule which was diagnosed as an adenomatoid tumor on histology. Although seminomas and adenomatoid tumor are frequent neoplasms, bilaterality and their coexistence have been rarely described and can pose diagnostic difficulties. Herein, we describe a case of a 53-year-old man who presented with bilateral testicular swellings which were diagnosed as bilateral seminomas with an adenomatoid tumor in the left paratesticular region on histopathology...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937385/primary-classical-hodgkin-lymphoma-of-rectum-report-of-an-extremely-rare-case-and-review-of-the-literature
#9
Jayasudha Arundhathi Vasudevan, Rekha A Nair, K Rakul Nambiar
Hodgkin lymphoma (HL) commonly presents as nodal disease, but in a subset of cases, the disease primarily develops in extranodal sites. Primary classical HL of the gastrointestinal (GI) tract is an extremely rare occurrence. Primary nature of the disease is confirmed after a complete lymphoma work up including chest radiograph, computed tomography scan, peripheral blood, and bone marrow studies. Only a few cases of primary GI lymphomas with limited immunohistochemical or molecular confirmation have been reported in literature...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937384/nonspecific-granulomatous-prostatitis-in-association-with-eosinophilic-epithelial-metaplasia-and-prostatic-adenocarcinoma
#10
Dorian I Dikov, Maria Stoyanova Koleva, Zhivko K Peshev, Veselin T Belovezhdov
We present the first case of nonspecific granulomatous prostatitis (NSGP) associated with both eosinophilic epithelial metaplasia (EM) in benign glands and prostatic adenocarcinoma (PCa). The patient was a 68-year old man with a history of obstructive prostatic syndrome. After a transurethral resection of the prostate, the histologic analysis revealed NSGP and PCa. EM was seen in benign peri-granulomatous secretory epithelial cells as PAS Diastase positive granular eosinophilic transformation of the apical cell cytoplasm...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937370/clinicopathologic-features-of-four-rare-types-of-chordomas-confirmed-by-brachyury-immunostaining
#11
Bharat Rekhi, Devmalya Banerjee, Mukta Ramadwar, Jyoti Bajpai, Nirmala A Jambhekar
BACKGROUND: A wide clinicopathologic spectrum of a chordoma exists. Brachyury constitutes as its most useful diagnostic immunohistochemical (IHC) marker. METHODS: During a 7-year-period, 4 unusual histopathologic types of chordomas were identified. Immunohistochemistry was performed by polymer technique. RESULTS: Clinicopathologic features of the 4 cases are as follows: Cases 1 and 2: Two tumors occurred in the sacrococcygeal and lumbosacral regions of a 42-year-old male and a 34-year-old female, respectively...
July 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28937164/a-capped-trigonal-pyramidal-molybdenum-hydrido-complex-and-an-unusually-mild-sulfur-carbon-bond-cleavage-reaction
#12
Robert H Morris
DFT calculations reveal that a reported molybdenum hydride complex has an unprecedented geometry with the molybdenum in the base of trigonal pyramid defined by three thiolate ligands with a phosphine ligand on the apex and a hydride capping a PS2 face. This complex reacts with methanol to produce a sulfido complex by a new reaction: the protonation of an ipso carbon of a thiolate ligand by coordinated methanol.
September 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28937155/polycatenation-tuned-microporosity-of-two-metal-tris-4-carboxybiphenyl-amine-frameworks-with-multilayer-structures
#13
Yan-Ping He, Lv-Bing Yuan, Jian Zhang
By employing a nanosized tris(4'-carboxybiphenyl)amine ligand to assemble with Zn(2+) ions, a novel trilayer network (FIR-37) and an unprecedented 2D → 3D microporous polycatenation framework (FIR-38) based on unusual tetralayers have been synthesized and structurally characterized. FIR-38 shows permanent porosity with a Langmuir surface area of 1408.4 m(2) g(-1).
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28937086/pulmonary-thromboembolism-as-first-presentation-of-childhood-membranous-nephropathy
#14
Mohit Madken, Shankar Prasad Nagaraju, Ravindra Prabhu Attur, Mahesha Vankalakunti
Nephrotic syndrome is associated with an increased risk of thromboembolism. Pulmonary thromboembolism has been described in nephrotic syndrome with or without deep vein thrombosis. In this case report, we describe an unusual first presentation of childhood membranous nephropathy with massive pulmonary thrombus with pulmonary infarction with right renal vein thrombosis.
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28937085/galloway-mowat-syndrome-unusual-form-of-nephrotic-syndrome-in-adolescent
#15
G Diwakar Naidu, Pathapati Deepthi, K RajaKarthik, S Sriram, G Swarnalatha, T Gangadhar
Galloway-Mowat syndrome (GMS), also acknowledged as Microcephaly-Hiatal hernia nephrotic syndrome, is an uncommon genetic disorder inherited as an autosomal recessive trait usually seen before two years of life. It is an exceptional multisystem genetic disorder with a collection of skeletal, neurological, facial, gastrointestinal, growth, and renal abnormalities. This case report describes GMS in a girl, suffering from developmental delay, stunted growth, and various dysmorphic features, in whom nephrotic syndrome became apparent at adolescent age...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28936661/isolation-of-rice-sperm-cells-for-transcriptional-profiling
#16
Scott D Russell, Daniel S Jones, Sarah Anderson, Xinkun Wang, Venkatesan Sundaresan, Xiaoping Gou
The male germline of flowering plants displays unexpectedly divergent transcriptional profiles compared to other cell types and tissues of plants. As these are among the smallest cells, and are harbored within pollen, isolating a pure collection of germline RNA presents unusual challenges. The sperm cells of rice represent a particularly challenging subject for study as the pollen are unusually short lived upon release from the anther, and the marker gene sequences that make FACS possible in Arabidopsis have not yet been introduced into rice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28936440/amyand-s-hernia-presenting-as-an-unusual-inguinal-mass-a-case-report
#17
Jennifer To, Paul Hanna, Ricardo Mohammed, Shauna Trinh, Franklyn Vazquez, Jamshed Zuberi, Robert Madlinger
Accounting for approximately 0.4-0.6% of all inguinal hernias, Amyand's hernia is a rare condition in which a vermiform appendix is found in an inguinal hernia sac. It is most commonly found in males and in the pediatric population. Since Claudius Amyand's first reported case in 1736, there have only been a total of 228 documented cases of the Amyand's hernia. Due to its rarity, the pathophysiology and risk factors of the condition are still unclear. Some theorize that it is secondary to a patent processus vaginalis or perhaps the presence of a fibrous band between the hernia sac and testes...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28936438/unusual-case-of-spindle-cell-sarcoma-metastases-to-right-ventricle-a-case-report-and-a-literature-review
#18
Rezarta Frakulli, Silvia Cammelli, Fabrizio Salvi, Damiano Balestrini, Antonella Baldissera, Claudio Degli Esposti, Ombretta Martelli, Massimo Abate, Anna Piaoli, Stefano Ferrari, Alessio G Morganti, Giovanni Piero Frezza
Cardiac metastases from sarcoma are uncommon. Due to their rarity there is not a standard of care. However, complete cardiac metastases resection is the best option but most of patients has widespread disease. In these patients palliative radiotherapy (RT) might improve symptoms and prevent further cardiac function decline. Here we present the case of a symptomatic 30-year-old woman with spindle cell sarcoma metastasis of right ventriculum and widespread disease. The patient received radiotherapy to the heart with palliative intent...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28936192/the-intricate-relationship-between-psychotic-like-experiences-and-associated-subclinical-symptoms-in-healthy-individuals
#19
Lui Unterrassner, Thomas A Wyss, Diana Wotruba, Helene Haker, Wulf Rössler
The interplay between subclinical psychotic, negative, and affective symptoms has gained increased attention regarding the etiology of psychosis spectrum and other mental disorders. Importantly, research has tended to not differentiate between different subtypes of psychotic-like experiences (PLE) although they may not have the same significance for mental health. In order to gain information on the subclinical interplay between specific PLE and other symptoms as well as the significance of PLE for mental health, we investigated their specific associations in 206 healthy individuals (20-60 years, 73 females) using correlational and linear regression analyses...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28936156/an-unusual-case-of-neural-palatal-swelling
#20
Preethi A Poonja, Atul P Sattur, Krishna N Burde, Kaveri Hallikeri, Venkatesh S Anehosur
Neural tumors in the oral cavity occur both in the soft tissues and in the jaw bones. They occur as painless, smooth surface swelling in the soft tissues of the mouth, exhibiting a slow rate of growth and mild expansion of the cortical plates. Here, we report a rare case of a cellular variant of schwannoma in a young Indian female patient who presented with an asymptomatic nodule in the mid-palatine raphe region of the hard palate, mimicking a fibroma, thus creating a dilemma in the diagnosis.
July 2017: International Journal of Health Sciences
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