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https://www.readbyqxmd.com/read/29781223/delayed-injury-of-hippocampal-interneurons-after-neonatal-hypoxia-ischemia-and-therapeutic-hypothermia-in-a-murine-model
#1
Raul Chavez-Valdez, Paul Emerson, Janasha Goffigan-Holmes, Alfredo Kirkwood, Lee J Martin, Frances J Northington
Delayed hippocampal injury and memory impairments follow neonatal hypoxia-ischemia (HI) despite the use of therapeutic hypothermia (TH). Death of hippocampal pyramidal cells occurs acutely after HI, but characterization of delayed cell death and injury of interneurons (INs) is unknown. We hypothesize that injury of INs after HI is: i) asynchronous to that of pyramidal cells, ii) independent of injury severity, and iii) unresponsive to TH. HI was induced in C57BL6 mice at p10 with unilateral right carotid ligation and 45 min of hypoxia (FiO2 =0...
May 21, 2018: Hippocampus
https://www.readbyqxmd.com/read/29742555/primary-subcutaneous-synovial-sarcoma-first-reported-subcutaneous-case-showing-tle1-immunoreactivity
#2
Victoria Alegría-Landa, Laura Nájera, Dolores Suárez Massa, Gastón Roustan, María Del Río, Heinz Kutzner, Luis Requena
Synovial sarcoma (SS) accounts for 5%-10% of all soft tissue sarcomas. It is a well-defined soft tissue neoplasm with biphasic and monophasic histologic subtypes and unknown histogenesis. It usually occurs in the extremities, especially the thigh-knee region of young adults. Recurrences are frequent and distant metastasis developed in approximately half of the patients. SSs are characterized by a recurrent nonrandom chromosomal translocation, t(X; 18) (p11; q11), which is considered the primary genetic event in more than 90% of cases...
May 8, 2018: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29716189/molecular-design-for-preparation-of-hexagonal-ordered-porous-films-based-on-side-chain-type-liquid-crystalline-star-polymer
#3
Yumiko Naka, Hiromu Takayama, Teruhisa Koyama, Khoa V Le, Takeo Sasaki
Fabrication of regularly porous films by the breath-figure method has attracted much attention. The simple, low-cost technique uses the condensation of water droplets to produce these structures, but the phenomenon itself is complex, requiring control over many interacting parameters that change throughout the process. Developing a unified understanding for the molecular design of polymers to prepare ordered porous films is challenging, but required for further advancements. In this article, the effects of the chemical structure of polymers in the breath-figure technique were systematically explored using side-chain type liquid-crystalline (LC) star polymers...
May 2, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29707408/a-de-novo-xp11-23-duplication-in-a-girl-with-a-severe-phenotype-expanding-the-clinical-spectrum
#4
Pinar Arican, Dilek Cavusoglu, Pinar Gencpinar, Berk Ozyilmaz, Taha Resid Ozdemir, Nihal Olgac Dundar
The Xp11.22-p11.23 duplication syndrome was described in 2009 by Giorda et al and is characterized by intellectual disability, speech delay, and electroencephalography anomalies. We report a case of a 23-month-old girl who presented with epilepsy and global developmental delay and who had a small duplication at Xp11.23. The case we present here is the first case showing the clinical features of Xp11.22-p11.23 duplication syndrome only involving synovial sarcoma, X breakpoint ( SSX ) genes: SSX1 , SSX3 , SSX4 , and SSX9 ...
June 2018: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/29706463/characterizing-a-novel-vglut3-p2a-icreer-knockin-mouse-strain-in-cochlea
#5
Chao Li, Yilai Shu, Guangqin Wang, He Zhang, Ying Lu, Xiang Li, Gen Li, Lei Song, Zhiyong Liu
Precise mouse genetic studies rely on specific tools that can label specific cell types. In mouse cochlea, previous studies suggest that vesicular glutamate transporter 3 (vGlut3), also known as Slc17a8, is specifically expressed in inner hair cells (IHCs) and loss of vGlut3 causes deafness. To take advantage of its unique expression pattern, here we generate a novel vGlut3-P2A-iCreER knockin mouse strain. The P2A-iCreER cassette is precisely inserted before stop codon of vGlut3, by which the endogenous vGlut3 is intact and paired with iCreER as well...
April 17, 2018: Hearing Research
https://www.readbyqxmd.com/read/29684482/two-cases-of-complex-balanced-autosomal-translocations-associated-with-severe-oligozoospermia
#6
Yan-Wei Sha, Li-Bin Mei, Zhi-Yong Ji, Lu Ding, Yunsheng Ge, Qiong Wu, Hui Kong, Zhi-Ying Su, Ping Li
Complex balanced autosomal translocation is rare and can lead to impaired spermatogenesis in males; however, its effects on oligozoospermia have rarely been reported. We report here two cases of rare complex balanced translocation in men with infertility. The karyotype of the first case was 46,XY,der(1)t(1;12)(p22;p11.2)ins(9;1)(p24;q25q23),der(9)ins(9;1),der(12)t(1;12)·ish der(1)t(1;12)(RP11-636B1+;RP11-659D23+)ins(9;1)(RP11-118P13+),der(9)ins(9;1),der(12)t(1;12). And the patient showed severe oligozoospermia with adult schizophrenia without other abnormalities...
April 20, 2018: Gene
https://www.readbyqxmd.com/read/29676159/self-assembly-of-cis-configured-squaraine-dyes-at-tio-2-dye-interface-far-red-active-dyes-for-dye-sensitized-solar-cells
#7
Vellimalai Punitharasu, Munavvar Fairoos Mele Kavungathodi, Jayaraj Nithyanandhan
To synergize both steric and electronic factors in designing the dyes for dye-sensitized solar cells (DSSCs), a series of cis-configured unsymmetrical squaraine dyes P11-15 with suitably functionalized alkyl groups and electron withdrawing group containing squaric acid unit were synthesized, respectively. These dyes capture the importance of (i) the effect and position of branched alkyl groups, (ii) mono- and di-anchoring groups containing dyes and (iii) further appending alkyl groups through the cyanoester vinyl unit on the central squaric acid units of D-A-D based cis-configured squaraine dyes...
April 20, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29666008/h2afy-is-a-novel-fusion-partner-of-mecom-in-acute-myeloid-leukemia
#8
Qiaoyan Han, Jiao Lu, Jianjiang Wang, Jinsong Ye, Xin Jiang, Haoyue Chen, Chunhua Liu, Lu Chen, Tong Lin, Suning Chen, Miao Sun, Feng Gao
The MECOM gene encoding a zinc finger protein that functions as a transcription factor, was located on chromosome 3q26, and rearrangements of MECOM often cause its overexpression in acute myeloid leukemia (AML). We identified H2AFY as a novel fusion gene partner of MECOM in an elderly male AML patient with cryptic 3q26 rearrangement using the whole transcriptome sequencing, who carried out abnormal karyotype of 46,XY,t(3;5)(q27;q31),add(14)(p11). We validated the existence of the unreported H2AFY-MECOM fusion gene by RT-PCR and Sanger DNA sequencing, and detected mutations of NRAS and BCOR in this patient...
April 2018: Cancer Genetics
https://www.readbyqxmd.com/read/29665859/morphology-and-genomic-hallmarks-of-breast-tumours-developed-by-atm-deleterious-variant-carriers
#9
Anne-Laure Renault, Noura Mebirouk, Laetitia Fuhrmann, Guillaume Bataillon, Eve Cavaciuti, Dorothée Le Gal, Elodie Girard, Tatiana Popova, Philippe La Rosa, Juana Beauvallet, Séverine Eon-Marchais, Marie-Gabrielle Dondon, Catherine Dubois d'Enghien, Anthony Laugé, Walid Chemlali, Virginie Raynal, Martine Labbé, Ivan Bièche, Sylvain Baulande, Jacques-Olivier Bay, Pascaline Berthet, Olivier Caron, Bruno Buecher, Laurence Faivre, Marc Fresnay, Marion Gauthier-Villars, Paul Gesta, Nicolas Janin, Sophie Lejeune, Christine Maugard, Sébastien Moutton, Laurence Venat-Bouvet, Hélène Zattara, Jean-Pierre Fricker, Laurence Gladieff, Isabelle Coupier, Georgia Chenevix-Trench, Janet Hall, Anne Vincent-Salomon, Dominique Stoppa-Lyonnet, Nadine Andrieu, Fabienne Lesueur
BACKGROUND: The ataxia telangiectasia mutated (ATM) gene is a moderate-risk breast cancer susceptibility gene; germline loss-of-function variants are found in up to 3% of hereditary breast and ovarian cancer (HBOC) families who undergo genetic testing. So far, no clear histopathological and molecular features of breast tumours occurring in ATM deleterious variant carriers have been described, but identification of an ATM-associated tumour signature may help in patient management. METHODS: To characterise hallmarks of ATM-associated tumours, we performed systematic pathology review of tumours from 21 participants from ataxia-telangiectasia families and 18 participants from HBOC families, as well as copy number profiling on a subset of 23 tumours...
April 17, 2018: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29619004/protection-of-oligodendrocytes-through-neuronal-overexpression-of-the-small-gtpase-ras-in-hyperoxia-induced-neonatal-brain-injury
#10
Meray Serdar, Josephine Herz, Karina Kempe, Elke Winterhager, Holger Jastrow, Rolf Heumann, Ursula Felderhoff-Müser, Ivo Bendix
Prematurely born infants are highly susceptible to various environmental factors, such as inflammation, drug exposure, and also high environmental oxygen concentrations. Hyperoxia induces perinatal brain injury affecting white and gray matter development. It is well known that mitogen-activated protein kinase signaling is involved in cell survival, proliferation, and differentiation. Therefore, we aim to elucidate cell-specific responses of neuronal overexpression of the small GTPase Ras on hyperoxia-mediated brain injury...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29618683/-malt-lymphoma-with-t-x-14-p11-2-q32-developing-during-the-course-of-cutaneous-leukocytoclastic-angitis
#11
Yu Uemura, Hirotaka Sakai, Yusuke Saiki, Akiko Uchida, Kazuyuki Sato, Yuka Tsuruoka, Satoshi Yokoi, Yuji Nishio, Manabu Matsunawa, Yoshinori Suzuki, Yasushi Isobe, Masayuki Kato, Naoto Tomita, Yasuyuki Inoue, Ikuo Miura
A 73-year-old man with left parotid gland swelling over 2 months was referred to our hospital in March 201X. Purpura on the lower legs had been recurrent for >20 years. Biopsy of the parotid gland demonstrated diffuse infiltration of abnormal lymphocytes that were negative for CD10 and positive for CD19, CD20, and κ-chain. The Ki-67 positivity was <10%; lymphoepithelial lesions were observed. The patient was diagnosed with extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT lymphoma)...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/29614500/precursor-t-lymphoblastic-lymphoma-associated-with-t-8-9-p11-2-q33-a-case-report-and-review-of-the-literature
#12
Hui Lv, Shaoyan Hu, Jun Lu, Qin Zhai, Zong Zhai, Zhizhuo Du, Yina Sun, Jie Li, Hailong He, Yi Wang
The 8p11 myeloproliferative syndrome (EMS) is an aggressive neoplasm associated with chromosomal translocations involving the fibroblast growth factor receptor 1 (FGFR1) tyrosine kinase gene on chromosome 8p11-12. A new case of a 9-year-old boy with leukocytosis, eosinophilia, and general lymphadenopathy is reported in this study. Bone marrow examination showed eosinophilic hyperplasia, with blast cells amounting to 6-7%. Karyotyping revealed cytogenetic abnormalities, including t(8;9)(p11.2;q3?3). Fluorescence in situ hybridization for the FGFR1 gene rearrangement yielded positive results...
April 4, 2018: Acta Haematologica
https://www.readbyqxmd.com/read/29602375/-primary-breast-synovial-sarcoma
#13
Clara Alfaro-Cervelló, Octavio Burgués
Primary synovial sarcoma of the breast is very rare. We report a case of a 33-year-old woman, who had previously undergone a radical mastectomy, having been diagnosed with fusocellular breast carcinoma. Histopathology revealed a hypercellular lesion formed by spindle cells with storiform and herringbone patterns. Immunohistochemistry showed strong expression of vimentin and CD99, and focal bcl2, EMA, CK AE1-AE3, actin and desmin, with negativity for S100, CD34, CK7, CK14, CK19, hormone receptors, caldesmon and myosin...
April 2018: Revista Española de Patología
https://www.readbyqxmd.com/read/29602217/a-fluorescently-labeled-undecapeptide-derived-from-a-protein-in-royal-jelly-of-the-honeybee-royalisin-for-specific-detection-of-oxidized-low-density-lipoprotein
#14
Akira Sato, Hiroto Unuma, Yoji Yamazaki, Keiichi Ebina
The probes for detection of oxidized low-density lipoprotein (ox-LDL) in plasma and in atherosclerotic plaques are expected to facilitate the diagnosis, prevention, and treatment of atherosclerosis. Recently, we have reported that a heptapeptide (Lys-Trp-Tyr-Lys-Asp-Gly-Asp, KP6) coupled through the ε-amino group of N-terminal Lys to fluorescein isothiocyanate (FITC), (FITC)KP6, can be useful as a fluorescent probe for specific detection of ox-LDL. In the present study, to develop a novel fluorescent peptide for specific detection of ox-LDL, we investigated the interaction (with ox-LDL) of an undecapeptide corresponding to positions 41 to 51 of a potent antimicrobial protein (royalisin, which consists of 51 residues; from royal jelly of honeybees), conjugated at the N-terminus to FITC in the presence of 6-amino-n-caproic acid (AC) linker, (FITC-AC)-royalisin P11, which contains both sequences, Phe-Lys-Asp and Asp-Lys-Tyr, similar to Tyr-Lys-Asp in (FITC)KP6...
March 30, 2018: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/29567297/fine-tuning-the-physicochemical-properties-of-peptide-based-blood-brain-barrier-shuttles
#15
Somaye Ghasemy, Júlia García-Pindado, Fatemeh Aboutalebi, Kianoush Dormiani, Meritxell Teixidó, Morteza Malakoutikhah
N-methylation is a powerful method to modify the physicochemical properties of peptides. We previously found that a fully N-methylated tetrapeptide, Ac-(N-MePhe)4 -CONH2 , was more lipophilic than its non-methylated analog Ac-(Phe)4 -CONH2 . In addition, the former crossed artificial and cell membranes while the latter did not. Here we sought to optimize the physicochemical properties of peptides and address how the number and position of N-methylated amino acids affect these properties. To this end, 15 analogs of Ac-(Phe)4 -CONH2 were designed and synthesized in solid-phase...
March 9, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29567212/molecular-dissection-of-the-membrane-aggregation-mechanisms-induced-by-monomeric-annexin-a2
#16
Juan C López-Rodríguez, Francisco J Martínez-Carmona, J Ignacio Rodríguez-Crespo, M Antonia Lizarbe, Javier Turnay
Annexins are a multigene family of proteins involved in aggregation and fusion processes of biological membranes. One of its best-known members is annexin A2 (or p36), capable of binding to acidic phospholipids in a calcium-dependent manner, as occurs with other members of the same family. In its heterotetrameric form, especially with protein S100A10 (p11), annexin A2 has been involved as a determinant factor in innumerable biological processes like tumor development or anticoagulation. However, the subcellular coexistence of different pools of the protein, in which the monomeric form of annexin A2 is growing in functional relevance, is to date poorly described...
March 19, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29550716/enhancing-bond-strength-on-demineralized-dentin-by-pre-treatment-with-selective-remineralising-agents
#17
Luiz Filipe Barbosa-Martins, Jossaria Pereira de Sousa, Aline Rogéria Freire de Castilho, Julia Puppin-Rontani, Robert P W Davies, Regina Maria Puppin-Rontani
Bonding to demineralized dentin of a diseased tooth has shown to be a significant clinical issue. This study evaluated the effect of 0.2% NaF-(NaF), MI Paste™-(CPP-ACP) and the self-assembling peptide 'P11 - 4 ' (Ace-QQRFEWEFEQQ-NH2 ) contained in Curodont™ Repair, have on microtensile bond strength-(µTBS) of two different adhesive systems (Adper™ Single Bond-(SB) or Clearfil™ SE Bond (CSE)) and wettability of demineralized dentin slices after remineralising agents were applied. The highest µTBS were found for the demineralized dentin-(DD) treated with CPP-ACP; both adhesives systems (p < 0...
May 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29550211/recent-insights-into-antidepressant-therapy-distinct-pathways-and-potential-common-mechanisms-in-the-treatment-of-depressive-syndromes
#18
REVIEW
Dietrich van Calker, Tsvetan Serchov, Claus Normann, Knut Biber
There is an urgent, unmet clinical need for faster and more efficient antidepressant drugs with higher response rates. In animal models of depression it was shown in the last few years that inhibition of three signaling molecules (BDNF, p11 and Homer1a) prevents efficacy of antidepressant therapy. These data not only show the crucial role of these factors for the treatment of depression, but may also point towards a better understanding of the molecular changes responsible for successful antidepressant therapy...
May 2018: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29546879/cathepsin-d-deficiency-delays-central-nervous-system-myelination-by-inhibiting-proteolipid-protein-trafficking-from-late-endosome-lysosome-to-plasma-membrane
#19
Da-Zhi Guo, Lin Xiao, Yi-Jun Liu, Chen Shen, Hui-Fang Lou, Yan Lv, Shu-Yi Pan
This study aimed to investigate the role of cathepsin D (CathD) in central nervous system (CNS) myelination and its possible mechanism. By using CathD knockout mice in conjunction with immunohistochemistry, immunocytochemistry and western blot assays, the myelination of the CNS and the development of oligodendrocyte lineage cells in vivo and in vitro were observed. Endocytosis assays, real-time-lapse experiments and total internal reflection fluorescence microscopy were used to demonstrate the location and movement of proteolipid protein in oligodendrocyte lineage cells...
March 16, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29543367/volumetric-imaging-of-the-developing-prepubertal-mouse-uterine-epithelium-using-light-sheet-microscopy
#20
Zer Vue, Gabriel Gonzalez, C Allison Stewart, Shyamin Mehra, Richard R Behringer
Endometrial or uterine glands secrete substances essential for uterine receptivity to the embryo, implantation, conceptus survival, and growth. Adenogenesis is the process of gland formation within the stroma of the uterus. In the mouse, uterine gland formation initiates at postnatal day (P) 5. Uterine gland morphology is poorly understood because it is primarily based on two-dimensional (2D) histology. To more fully describe uterine gland morphogenesis, we generated three-dimensional (3D) models of postnatal uterine glands from P0 to P21, based on volumetric imaging using light sheet microscopy...
March 15, 2018: Molecular Reproduction and Development
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