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https://www.readbyqxmd.com/read/28623974/increased-placental-phospholipase-a2-gene-expression-and-free-f2-isoprostane-levels-in-response-to-oxidative-stress-in-preeclampsia
#1
M Brien, J Larose, K Greffard, P Julien, J F Bilodeau
Vasoactive eicosanoids such as thromboxane (TX) A2 and F2-isoprostanes (F2-isoPs) were shown to be increased in the preeclamptic placenta. Only one of the 64 possible isomers of F2-isoPs derived from the oxidation of arachidonic acid was investigated in the placenta so far. F2-isoPs are released from membrane phospholipids by phospholipases A2 (PLA2) and were shown to act on the TXA2 receptor (TBXA2R). However, the PLA2 deregulated in preeclampsia (PE) remains to be determined. In this study, we analyzed the concentrations of six isomers of F2-isoPs; 8-iso-PGF2α, 8-iso-15(R)-PGF2α, 15(R)-PGF2α, iPF2α-IV, iPF2α-VI, 5-iPF2α-VI and the concentrations of the stable metabolites of TXA2, TXB2, by high performance liquid chromatography coupled with tandem mass spectrometry in placentas of PE (n = 17) and normotensive (n = 15) pregnancies according to the biopsy site: peri-insertion or periphery...
July 2017: Placenta
https://www.readbyqxmd.com/read/28617726/comparative-analysis-of-peripheral-corneal-geometry-in-health-and-keratoconus
#2
Enric Mas-Aixala, Joan Gispets, Núria Lupón, Genís Cardona
OBJECTIVES: To describe and compare corneal peripheral angles in normal and keratoconic eyes, to gain a better understanding of the topography of the periphery of the cornea in keratoconus and assist practitioners in the selection and fitting of large diameter contact lenses. METHODS: Eighty-eight eyes were included in the study, divided into three groups: healthy (A0, 28 eyes), keratoconus at stage I according to the Amsler-Krumeich classification (AI, 33 eyes) and keratoconus at stages II to IV (AII, 27 eyes)...
June 14, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28607094/pharmacology-of-the-nav1-1-domain-iv-voltage-sensor-reveals-coupling-between-inactivation-gating-processes
#3
Jeremiah D Osteen, Kevin Sampson, Vivek Iyer, David Julius, Frank Bosmans
The Nav1.1 voltage-gated sodium channel is a critical contributor to excitability in the brain, where pathological loss of function leads to such disorders as epilepsy, Alzheimer's disease, and autism. This voltage-gated sodium (Nav) channel subtype also plays an important role in mechanical pain signaling by primary afferent somatosensory neurons. Therefore, pharmacologic modulation of Nav1.1 represents a potential strategy for treating excitability disorders of the brain and periphery. Inactivation is a complex aspect of Nav channel gating and consists of fast and slow components, each of which may involve a contribution from one or more voltage-sensing domains...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28588779/pancreatic-acinar-cell-carcinoma-presenting-with-panniculitis-successfully-treated-with-folfirinox-a-case-report
#4
Tomoyasu Yoshihiro, Kenta Nio, Kenji Tsuchihashi, Hiroshi Ariyama, Kenichi Kohashi, Nobuhiro Tsuruta, Fumiyasu Hanamura, Kyoko Inadomi, Mamoru Ito, Kosuke Sagara, Yuta Okumura, Michitaka Nakano, Shuji Arita, Hitoshi Kusaba, Yoshinao Oda, Koichi Akashi, Eishi Baba
Pancreatic acinar cell carcinoma (PACC) is a rare tumor of the exocrine pancreas, representing only 1% of all pancreatic malignancies. A 50-year-old man presented with edema of the thumb joints bilaterally, followed by an appearance of masses in the bilateral lower extremities and fever (38°C). The masses were diagnosed as panniculitis by skin biopsy, and multiple intraperitoneal masses were incidentally detected on pelvic magnetic resonance imaging performed to investigate the leg abnormalities. The patient was referred to the Kyushu University Hospital for further investigation, and fluorodeoxyglucose-positron emission tomography/computed tomography (CT) revealed high-uptake tumors in the pancreatic tail, in the periphery of the liver, and in the pelvis...
June 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28556833/blockade-of-interleukin-6-receptor-in-the-periphery-promotes-rapid-and-sustained-antidepressant-actions-a-possible-role-of-gut-microbiota-brain-axis
#5
J-C Zhang, W Yao, C Dong, C Yang, Q Ren, M Ma, K Hashimoto
Depression is a common, severe and chronic psychiatric disease. Although the currently available antidepressants have been used in the treatment of depression, their beneficial effects are limited. Accumulating evidence suggests that pro-inflammatory cytokines such as interleukin-6 (IL-6) have an important role in the pathogenesis of depression. This study was undertaken to examine whether anti-mouse IL-6 receptor antibody (MR16-1) induces antidepressant effects in a social defeat stress model. Intravenous injection of MR16-1 induced rapid-onset and long-lasting antidepressant effects in susceptible mice after social defeat stress through its anti-inflammatory actions...
May 30, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28525331/an-immunohistochemical-analysis-of-lymphocytic-infiltrations-in-canine-skin-cancers
#6
J A Madej, J P Madej, S Dzimira, M Nowak
Lymphocytic infiltrations located in the extracellular matrix often accompany canine skin cancer. They can be characterised as an inflammatory infiltration and/or a second tumour - lymphoma. The aim of this study was an immunohistochemical analysis of a lymphocytic infiltration which accompanies spontaneous skin cancer. Twenty basal cell carcinoma, 20 non-keratinizing squamous cell carcinoma, 20 keratinizing squamous cell carcinoma and 8 sebaceous gland carcinoma samples which were accompanied by a lymphocytic infiltration and/or secondary lymphatic follicles were verified histopathologically...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28497026/chchd4-regulates-intracellular-oxygenation-and-perinuclear-distribution-of-mitochondria
#7
Luke W Thomas, Oliver Staples, Mark Turmaine, Margaret Ashcroft
Hypoxia is a characteristic of the tumor microenvironment and is known to contribute to tumor progression and treatment resistance. Hypoxia-inducible factor (HIF) dimeric transcription factors control the cellular response to reduced oxygenation by regulating the expression of genes involved in metabolic adaptation, cell motility, and survival. Alterations in mitochondrial metabolism are not only a downstream consequence of HIF-signaling but mitochondria reciprocally regulate HIF signaling through multiple means, including oxygen consumption, metabolic intermediates, and reactive oxygen species generation...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28483796/imaging-of-viral-neuroinvasion-in-the-zebrafish-reveals-that-sindbis-and-chikungunya-viruses-favour-different-entry-routes
#8
Gabriella Passoni, Christelle Langevin, Nuno Palha, Bryan C Mounce, Valérie Briolat, Pierre Affaticati, Elodie De Job, Jean-Stéphane Joly, Marco Vignuzzi, Maria-Carla Saleh, Philippe Herbomel, Pierre Boudinot, Jean-Pierre Levraud
Alphaviruses, such as chikungunya (CHIKV) and Sindbis virus (SINV), are vector‑borne pathogens that cause acute illnesses in humans and are sometimes associated with neuropathies, especially in infants and elderly patients. Little is known about their entry mechanism in the central nervous system (CNS), even for SINV, which has been used extensively as a model for viral encephalopathies. We previously established a CHIKV infection model in the optically transparent zebrafish larva; here we describe a new SINV infection model in this host...
May 8, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28435276/clinical-and-biochemical-study-of-d-serine-metabolism-among-schizophrenia-patients
#9
Hamdy N El-Tallawy, Tahia H Saleem, Abdallah Maa El-Ebidi, Mohammed H Hassan, Romany H Gabra, Wafaa Ma Farghaly, Nagwa Abo El-Maali, Hoda S Sherkawy
BACKGROUND: Schizophrenia is a typical N-methyl-d-aspartate receptor (NMDA-R) hypofunction disorder. Decreased d-serine (d-Ser) levels in the periphery occur in schizophrenia and may reflect decreased availability of d-Ser to activate NMDA-R in the brain. OBJECTIVE: The objective of this study was to investigate the role of d-Ser metabolism in the pathogenesis of schizophrenia via biochemical assays and correlates, the serum level of d-Ser, d-serine racemase (SR) (responsible for its formation from l-serine [l-Ser]) and d-amino acid oxidase (DAAO) (responsible for its catabolism), among different clinical types of schizophrenia patients...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28427063/optical-coherence-tomography-angiography-in-diabetic-maculopathy
#10
Gabriel Coscas, Marco Lupidi, Florence Coscas
Fluorescein angiography (FA) and indocyanine green angiography have provided information about the normal retinal and choroidal anatomy, nearly comparable to histological findings. These tests have been fundamental in the evaluation of all retinal and choroidal vascular diseases and have allowed clinicians to define and diagnose several pathological conditions. FA became the "gold standard" in retinal imaging due to the capacity to visualize the retinal capillary bed and its changes, both in the macular area and in the periphery...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28385600/mesenchymal-stem-cells-and-differentiated-insulin-producing-cells-are-new-horizons-for-pancreatic-regeneration-in-type-i-diabetes-mellitus
#11
Ayat M Domouky, Ashraf S Hegab, Amal Al-Shahat, Nermin Raafat
BACKGROUND: Diabetes mellitus has become the third human killer following cancer and cardiovascular disease. Millions of patients, often children, suffer from type 1 diabetes (T1D). Stem cells created hopes to regenerate damaged body tissues and restore their function. AIM: This work aimed at clarifying and comparing the therapeutic potential of differentiated and non-differentiated mesenchymal stem cells (MSCs) as a new line of therapy for T1D. METHODS: 40 Female albino rats divided into group I (control): 10 rats and group II (diabetic), III and IV, 10 rats in each, were injected with streptozotocin (50mg/kg body weight)...
April 3, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28315184/epiphyseal-arterial-network-and-inferior-retinacular-artery-seem-critical-to-femoral-head-perfusion-in-adults-with-femoral-neck-fractures
#12
Dewei Zhao, Xing Qiu, Benjie Wang, Zihua Wang, Wei Wang, Jun Ouyang, Rona M Silva, Xiaotian Shi, Kai Kang, Dachuan Xu, Chuang Li, Shizhen Zhong, Yu Zhang, Kent E Pinkerton
BACKGROUND: A better understanding of the blood supply of the femoral head is essential to guide therapeutic strategies for patients with femoral neck fractures. However, because of the limitations of conventional techniques, the precise distribution and characteristics of intraosseous arteries of the femoral head are not well displayed. QUESTIONS/PURPOSES: To explore the characteristics and interconnections of the intraosseous vessel system between different areas of the femoral head and the possible blood supply compensatory mechanism after femoral neck fracture...
March 17, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28284781/diagnosis-course-and-management-of-angioedema-in-patients-with-acquired-c1-inhibitor-deficiency
#13
Andrea Zanichelli, Giulia Maria Azin, Maddalena Alessandra Wu, Chiara Suffritti, Lorena Maggioni, Sonia Caccia, Francesca Perego, Romualdo Vacchini, Marco Cicardi
BACKGROUND: Acquired angioedema due to C1-inhibitor deficiency (C1-INH-AAE) is a rare disease with no prevalence data or approved therapies. OBJECTIVE: To report data on patients with C1-INH-AAE followed at Angioedema Center, Milan (from 1976 to 2015). METHODS: Diagnostic criteria included history of recurrent angioedema without wheals; decreased C1-INH antigen levels and/or functional activity of C1-INH and C4 antigen less than 50% of normal; late symptom onset (>40 years); no family history of angioedema and C1-INH deficiency...
March 8, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28259657/expression-of-inos-cd163-and-arg-1-taken-as-m1-and-m2-markers-of-microglial-polarization-in-human-glioblastoma-and-the-surrounding-normal-parenchyma
#14
L Lisi, G M P Ciotti, D Braun, S Kalinin, D Currò, C Dello Russo, A Coli, A Mangiola, C Anile, D L Feinstein, P Navarra
Microglia and macrophages appear to be the most common cells in the GBM microenvironment. In the present study we investigated the status of macrophages/microglia activation in surgical specimens from 41 patients diagnosed with grade IV GBM. For each patient we analyzed both the center of tumor and the parenchyma surrounding the tumor. The specimens were stained for: i) IBA1, a 17-kDa EF hand protein specifically expressed in microglia/macrophages ii) CD163, a cell surface antigen associated with M2 phenotype; iii) iNOS, taken as a functional marker of M1 phenotype, and iv) ARG-I, taken as a functional marker of M2 phenotype...
March 2, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28217325/crystal-structures-of-a-novel-nnn-pincer-ligand-and-its-dinuclear-titanium-iv-alkoxide-pincer-complex
#15
Jakub Pedziwiatr, Ion Ghiviriga, Khalil A Abboud, Adam S Veige
This report describes a synthetic protocols and the crystal structures involving a novel pincer-type H3[NNN] ligand, namely di-μ-bromido-μ-{2-(2,2-di-methylpropanimido-yl)-N-[2-(2,2-di-methyl-propanimido-yl)-4-methyl-phen-yl]-4-methylaniline}-bis-[(diethyl ether)lithium], [Li2Br2(C24H33N3)(C4H10O)2] (1) and a dinuclear metal complex, namely di-μ-bromido-2:3κ(4)Br:Br-bis-{2-(2,2-di-methylpropanimido-yl)-N-[2-(2,2-di-methyl-propanimido-yl)-4-methyl-phen-yl]-4-methylaniline}-1κ(3)N,N',N'';4κ(3)N,N',N''-tetra-μ-iso-propano-lato-1:2κ(4)O:O;3:4κ(4)O:O-diiso-propano-lato-1κO,4κO-2,3-dilithium-1,4-dititanium, [Li2Ti2Br2(C24H32N3)2(C3H7O)6] or {[NHNNH]Ti(O (i) Pr)3(LiBr)2}2 (2)...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28176853/quantifying-tumor-associated-macrophages-in-breast-cancer-a-comparison-of-iron-and-fluorine-based-mri-cell-tracking
#16
Ashley V Makela, Jeffrey M Gaudet, Paula J Foster
Tumor associated macrophages (TAMs) are associated with tumor growth and metastasis. MRI can detect TAMs labeled with iron oxide (USPIO) or perfluorocarbon (PFC) agents. This study compared these two cell tracking approaches for imaging TAMs in vivo. 4T1 tumors were imaged with MRI at 4 days or 3 weeks post cell implantation after intravenous (i.v.) administration of either USPIO or PFC. Signal loss was detected within tumors at both time points post USPIO. Images acquired at 4 days demonstrated signal loss encompassing the entire tumor and around the periphery at 3 weeks...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164283/monocytes-microglia-and-cd200-cd200r1-signaling-are-essential-in-the-transmission-of-inflammation-from-the-periphery-to-the-central-nervous-system
#17
Xin Xie, Xiaoguang Luo, Na Liu, Xiaohong Li, Fan Lou, Yumin Zheng, Yan Ren
Peripheral inflammation is known to trigger neuroinflammation and neurodegenerative disease. However, the key components during the propagation of inflammation from the periphery to the central nervous system (CNS) remain unclear. Lipopolysaccharide (LPS) was administered to Sprague-Dawley rats to induce peripheral inflammation. An intravenous injection and an intranigral injection of clodronate liposomes were given to deplete monocytes and microglia, respectively. Recombinant CD200 fusion protein (CD200Fc) or an anti-CD200R1 antibody was injected into the substantia nigra to manipulate the involvement of CD200 and CD200R1...
April 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28159234/immunohistochemical-detection-of-pro-inflammatory-and-anti-inflammatory-cytokines-in-granulomas-in-cattle-with-natural-mycobacterium-bovis-infection
#18
Ana M Canal, Natalia Pezzone, Angel Cataldi, Martín Zumarraga, Mariano Larzabal, Sergio Garbaccio, Analía Fernandez, Lucas Dominguez, Alicia Aranaz, Antonio Rodriguez-Bertos
Cellular immune response was evaluated in lymph nodes and lung with different granulomatous lesions from cattle naturally infected with Mycobacterium bovis. For this purpose, we assessed pro-inflammatory and anti-inflammatory cytokines by immunohistochemical assays. Immunoreaction was observed for all the cytokines analyzed. Fourteen animals displayed advanced stage IV granulomas, with intense immunoreactivity to IFN-γ and TGF-β in areas of caseous necrosis, macrophages and lymphocytes. Seven animals showed stage III granuloma, with high immunoreactivity to IFN-γ (average of 44...
February 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28138158/selective-increase-of-cerebrospinal-fluid-il-6-during-experimental-systemic-inflammation-in-humans-association-with-depressive-symptoms
#19
H Engler, P Brendt, J Wischermann, A Wegner, R Röhling, T Schoemberg, U Meyer, R Gold, J Peters, S Benson, M Schedlowski
Systemic inflammation is accompanied by profound behavioral and mood changes that resemble symptoms of depression. Findings in animals suggest that pro-inflammatory cytokines released by activated immune cells in the periphery evoke these behavioral symptoms by driving inflammatory changes in the brain. However, experimental data in humans are lacking. Here we demonstrate in healthy male volunteers (10 endotoxin treated, 8 placebo treated) that intravenous administration of low-dose endotoxin (0.8 ng/kg body weight), a prototypical pathogen-associated molecular pattern that activates the innate immune system, not only induces a significant increase in peripheral blood cytokine concentrations (that is, tumor necrosis factor-α, interleukin (IL)-6, IL-10) but also results, with some latency, in a robust and selective increase of IL-6 in the cerebrospinal fluid (CSF)...
January 31, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28133208/-a-case-of-primary-acinic-cell-carcinoma-acc-of-the-breast
#20
Hiroshi Kawai, Ryoma Sugimoto, Norichika Iga, Hirokuni Ikeda, Ryosuke Yoshida, Naohisa Waki, Masahiro Ishizaki, Hideyuki Nishi, Kazuki Yamashita
A49 -year-old woman presented with a 3.5 cm mass in her right breast. Mammography revealed a lobular mass with poorly defined margins and no microcalcification. Ultrasonography showed a hypoechoic mass with an irregular margin. The tumor was diagnosed as breast carcinoma using a core needle biopsy. The patient underwent a modified radical mastectomy with sentinel lymph node biopsy, and received adjuvant chemotherapy. The tumor consisted of 2 types of carcinoma. The center of the tumor was solid-tubular carcinoma, and the periphery was acinic cell carcinoma(ACC)...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
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