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https://www.readbyqxmd.com/read/29678764/relation-of-nnos-isoforms-to-mitochondrial-density-and-pgc-1alpha-expression-in-striated-muscles-of-mice
#1
Oliver Baum, Dea Aaldijk, Anna Lena Engeli, Matthias Spree, Serge Summermatter, Christoph Handschin, Andreas Zakrzewicz
The expression of neuronal NO synthase (nNOS) alpha- and beta-isoforms in skeletal muscle is well documented but only little information is available about their regulation/functions. Using different mouse models, we now assessed whether the expression of nNOS-isoforms in muscle fibers is related to mitochondria content/activity and regulated by peroxisome proliferator-activated receptor gamma coactivator-1alpha (PGC-1alpha). Catalytic histochemistry revealed highest nNOS-concentrations to be present in type-2 oxidative muscle fibers...
April 17, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29674419/comparative-study-of-the-novel-rgd-motif-containing-itg%C3%AE-v%C3%AE-6-binding-peptides-sflap3-and-sfitgv6-for-diagnostic-application-in-hnscc
#2
Saskia Roesch, Thomas Lindner, Max Sauter, Anastasia Loktev, Paul Flechsig, Martin Müller, Walter Mier, Rolf Warta, Gerhard Dyckhoff, Christel Herold-Mende, Uwe Haberkorn, Annette Altmann
Alpha v beta 6 (αvβ6) integrin is overexpressed by several carcinomas, and thus considered as target for diagnostic imaging and anti-cancer therapies. Recently, we presented SFITGv6 as a novel potential tracer for imaging and targeted therapy of αvβ6 integin-positive carcinomas. Here, we analyzed affinity and specificity of five native αvβ6 integrin-specific binders in comparison to SFITGv6. Methods: Sunflower trypsin inhibitor (SFTI)-1-based peptides containing arginine-glycine-aspartic acid (RGD) motif-spanning octamers of fibronectin (SFFN1), tenascin C (SFTNC), vitronectin (SFVTN), and latency-associated peptides (LAP) 1 (SFLAP1), and 3 (SFLAP3) were synthesized and their binding potential to αvβ6 integrin-expressing head and neck squamous cell carcinoma (HNSCC) cell lines was evaluated...
April 19, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29660116/a-novel-histochemistry-assay-to-assess-and-quantify-focal-cytochrome-c-oxidase-deficiency
#3
Marie-Lune Simard, Arnaud Mourier, Laura C Greaves, Robert W Taylor, James B Stewart
Defects in the respiratory chain, interfering with energy production in the cell, are major underlying causes of mitochondrial diseases. In spite of this, the surprising variety of clinical symptoms, disparity between ages of onset as well as the involvement of mitochondrial impairment in ageing and age-related diseases, continues to challenge our understanding of the pathogenic processes. This complexity can be in part attributed to the unique metabolic needs of organs or of various cell types. In this view, it remains essential to investigate mitochondrial dysfunction at the cellular level...
April 16, 2018: Journal of Pathology
https://www.readbyqxmd.com/read/29656535/uterine-and-eggshell-modifications-associated-with-the-evolution-of-viviparity-in-south-american-water-snakes-helicops-spp
#4
Henrique B Braz, Selma M Almeida-Santos, Christopher R Murphy, Michael B Thompson
The evolution of viviparity requires eggshell thinning to bring together the maternal uterus and extraembryonic membranes to form placentae for physiological exchanges. Eggshell thinning likely involves reduced activity of the uterine glands that secrete it. We tested these hypotheses by comparing the uterine and eggshell structure and histochemistry among oviparous and viviparous water snakes (Helicops) using phylogenetic methods. Eggshell thinning occurred convergently in all three origins of viviparity in Helicops and was accomplished by the loss of the mineral layer and thinning of the shell membrane...
April 14, 2018: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/29626056/methylindoles-and-methoxyindoles-are-agonists-and-antagonists-of-human-aryl-hydrocarbon-receptor-ahr
#5
Martina Stepankova, Iveta Bartonkova, Eva Jiskrova, Radim Vrzal, Sridhar Mani, Sandhya Kortagere, Zdenek Dvorak
Novel methyl-indoles were identified as endobiotic and xenobiotic ligands of human aryl hydrocarbon receptor (AhR). We examined the effects of 22 methylated and methoxylated indoles on the transcriptional activity of AhR. Employing reporter gene assays in AZ-AHR transgenic cells, we determined full agonist, partial agonist or antagonist activities of tested compounds, having substantially variable EC50 , IC50 and relative efficacies. The most effective agonists (EMAX relative to 5 nM dioxin) of AhR were 4-Me-indole (134%), 6-Me-indole (91%) and 7-MeO-indole (80%), respectively...
April 6, 2018: Molecular Pharmacology
https://www.readbyqxmd.com/read/29622093/glycoconjugates-pattern-and-chemosensory-cells-in-the-camel-respiratory-mucosa-lectin-and-immunohistochemical-studies
#6
Dalia Ibrahim
The glycoconjugates pattern of acidic secretions and distribution of chemosensory cells (SCCs) in the respiratory mucosa of dromedary camels were analyzed so as to identify their functional role. Secretions of the goblet cells and mucous glandular cells were analyzed to evaluate the variety of sugar chains, focusing on the acidic glycoconjugates. Using lectin histochemistry, WGA, STL, DBA, SBA, VVA and RCA-120 intensely bound to the goblet cells. PNA and ECL labeled the goblet cells with moderate intensity...
April 2018: Tissue & Cell
https://www.readbyqxmd.com/read/29620941/cerebrovascular-%C3%AE-amyloid-deposition-and-associated-microhemorrhages-in-a-tg2576-alzheimer-mouse-model-are-reduced-with-a-dha-enriched-diet
#7
Justine Hur, Véronique Mateo, Nicolas Amalric, Mégane Babiak, Gilbert Béréziat, Claire Kanony-Truc, Thierry Clerc, Régis Blaise, Isabelle Limon
Cerebral amyloid angiopathy (CAA) is a major contributor to Alzheimer's disease (AD) pathogenesis. Like AD, CAA is often accompanied by marked inflammation, aggravating associated vasculopathies. No evidence-based prevention or treatment strategies are available. Here, we evaluate the possible beneficial effect of a diet enriched with docosahexaenoic acid (DHA), which is known to attenuate inflammation in CAA. Tg2576 mice, a transgenic model of AD/CAA, were fed a DHA-enriched diet starting at 2 mo of age and ending at 10, 14, or 18 mo of age...
April 5, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29619229/transcriptional-analysis-and-histochemistry-reveal-that-hypersensitive-cell-death-and-h-2-o-2-have-crucial-roles-in-the-resistance-of-tea-plant-camellia-sinensis-l-o-kuntze-to-anthracnose
#8
Yuchun Wang, Xinyuan Hao, Qinhua Lu, Lu Wang, Wenjun Qian, Nana Li, Changqing Ding, Xinchao Wang, Yajun Yang
Anthracnose causes severe losses of tea production in China. Although genes and biological processes involved in anthracnose resistance have been reported in other plants, the molecular response to anthracnose in tea plant is unknown. We used the susceptible tea cultivar Longjing 43 and the resistant cultivar Zhongcha 108 as materials and compared transcriptome changes in the leaves of both cultivars following Colletotrichum fructicola inoculation. In all, 9015 and 8624 genes were differentially expressed between the resistant and susceptible cultivars and their controls (0 h), respectively...
2018: Horticulture Research
https://www.readbyqxmd.com/read/29609419/add-on-therapy-with-the-%C3%AE-blockers-tamsulosin-and-naftopidil-improves-voiding-function-by-enhancing-neuronal-activity-in-prostatic-hyperplasia-rats
#9
Il-Gyu Ko, Lakkyong Hwang, Jun-Jang Jin, Sang-Hoon Kim, Jin Hee Han, Jung Won Jeon, Sung Tae Cho
PURPOSE: Benign prostatic hyperplasia (BPH) impacts quality of life in men by causing lower urinary tract symptoms. α1-Adrenoceptor (α1-AR) blockers improve lower urinary tract symptoms. We investigated the efficacy of add-on therapy with α1-AR blockers on BPH rats. METHODS: Rats in the drug-treated groups were orally administered each drug once a day for 30 days after orchiectomy. To induce BPH, rats were castrated and testosterone (20 mg/kg) was injected subcutaneously once per day for 30 days...
March 2018: International Neurourology Journal
https://www.readbyqxmd.com/read/29607689/curcumin-and-resveratrol-rescue-cortical-hippocampal-system-from-chronic-fluoride-induced-neurodegeneration-and-enhance-memory-retrieval
#10
Chhavi Sharma, Pooja Suhalka, Maheep Bhatnagar
OBJECTIVE: The aim of this study were: (1) To evaluate neuroprotective effect of Resveratrol and Curcumin on NADPH-d (Nicotinamide adenine dinucleotide phosphate diaphorase) activity in neuronal cell in sub regions of mice brain (2) To evaluate the effects on antioxidant status, and (3) To evaluate the protective effects of phytochemicals on learning and memory following fluoride exposure. METHOD: Young Mice (one month old, B.W. 30±5mg) were provided to 120 ppm sodium fluoride dissolved in drinking water...
April 2, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29603301/quantification-of-lectin-fluorescence-in-gne-myopathy-muscle-biopsies
#11
Petcharat Leoyklang, Bradley Class, Satoru Noguchi, William A Gahl, Nuria Carrillo, Ichizo Nishino, Marjan Huizing, May Christine Malicdan
INTRODUCTION: GNE myopathy is an adult-onset muscle disorder characterized by impaired sialylation of (muscle) glycans, detectable by lectin histochemistry. We describe a standardized method to quantify (lectin-)fluorescence in muscle sections, applicable for diagnosis and response to therapy for GNE myopathy. METHODS: Muscle sections were fluorescently labeled with the sialic acid-binding Sambucus nigra agglutinin (SNA) lectin and antibodies to sarcolemma residence protein Caveolin-3 (CAV-3)...
March 30, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29602989/an-in-vivo-analysis-of-safe-laparoscopic-grasping-thresholds-for-colorectal-surgery
#12
Jenifer Barrie, Louise Russell, Adrian J Hood, David G Jayne, Anne Neville, Peter R Culmer
BACKGROUND: Analysis of safe laparoscopic grasping thresholds for the colon has not been performed. This study aimed to analyse tissue damage thresholds when the colon is grasped laparoscopically, correlating histological changes to mechanical compressive forces. METHODS: An instrumented laparoscopic grasper was used to measure the forces applied to porcine colon, with data captured and plotted as a force-time (f-t) curve. Haematoxylin and eosin histochemistry of tissue subjected to 10, 20, 40, 50 and 70 N for 5, 30 and 60 s was performed, and the area of colonic circular and longitudinal muscle was compared in grasped and un-grasped regions...
March 30, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29599600/an-enigmatic-clinical-presentation-of-plasma-cell-granuloma-of-the-oral-cavity
#13
Pravesh Kumar Jhingta, Kavita Mardi, Deepak Sharma, Vinay Kumar Bhardwaj, Ashu Bhardwaj, Nitin Saroch, Nishant Negi
Plasma cell granuloma is a rare benign lesion characterized by the infiltration of plasma cells; primarily occurring in the lungs. It is also seen to occur in the brain, kidney stomach, heart, and so on but its intraoral occurrence is a rarity. This case report represents one of the uncommon locations in the oral cavity affected by plasma cell granuloma, its clinical and histological features, and establishes the differential diagnosis with other malignant or benign disease entities and planning the treatment accordingly...
January 2018: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29590252/morphology-of-the-spermatheca-of-triatoma-lecticularia-hemiptera-reduviidae-stal-1859
#14
M F Monteiro, L C O Lisboa, T M Carvalho-Costa, J C Nevoa, C J F Oliveira, J E Serrão, E A Souza
Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) is a potential vector of Chagas's disease and the comprehension of its reproductive biology is an important tool to control this insect. In the reproductive tract of female insects, the spermatheca plays a crucial role storing male spermatozoa after mating. Whithin insects the spermatheca shows a wide morphological diversity and the analysis of this characteristic can contribute to understand the reproductive biology of the species. This study describes the histology and histochemistry of the spermatheca of T...
March 22, 2018: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/29582708/peritoneal-and-scrotal-carcinomas-of-unknown-origin-in-two-bovine-calves
#15
Kelsey A Brakel, Grace VanHoy, Austin Hinds, Justin Breitbach, Christopher Premanandan, Rebecca Kohnken
Two unrelated bovine beef calves, aged 2 mo and 3 mo, were presented to The Ohio State University Veterinary Medical Center because of scrotal swelling and abdominal distension. On postmortem examination, there was abundant peritoneal fluid and numerous small friable masses covering all peritoneal surfaces and extending into the scrotum via the tunica vaginalis, with no identifiable primary neoplasm. Based on light microscopy, differential diagnoses included malignant mesothelioma and anaplastic carcinoma. Immunohistochemically, the neoplasms labeled positive for cytokeratin, and negative for vimentin and calretinin...
March 1, 2018: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/29582397/chronic-hippocampal-expression-of-notch-intracellular-domain-induces-vascular-thickening-reduces-glucose-availability-and-exacerbates-spatial-memory-deficits-in-a-rat-model-of-early-alzheimer
#16
Pablo Galeano, María C Leal, Carina C Ferrari, María C Dalmasso, Pamela V Martino Adami, María I Farías, Juan C Casabona, Mariana Puntel, Sonia Do Carmo, Clara Smal, Martín Arán, Eduardo M Castaño, Fernando J Pitossi, A Claudio Cuello, Laura Morelli
The specific roles of Notch in progressive adulthood neurodegenerative disorders have begun to be unraveled in recent years. A number of independent studies have shown significant increases of Notch expression in brains from patients at later stages of sporadic Alzheimer's disease (AD). However, the impact of Notch canonical signaling activation in the pathophysiology of AD is still elusive. To further investigate this issue, 2-month-old wild-type (WT) and hemizygous McGill-R-Thy1-APP rats (Tg(+/-)) were injected in CA1 with lentiviral particles (LVP) expressing the transcriptionally active fragment of Notch, known as Notch Intracellular Domain (NICD), (LVP-NICD), or control lentivirus particles (LVP-C)...
March 26, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29580573/-benign-and-malignant-giant-cell-rich-lesions-of-bone-pathological-diagnosis-with-special-emphasis-on-recent-immunohistochemistry-and-molecular-techniques
#17
Nicolas Macagno, Kevin Caselles, Sébastien Aubert, Virginie Audard, Anne Gomez-Brouchet, Christine Galant, Jean-Marc Guinebretière, Marie Karanian, Frédérique Larousserie, Béatrice Marie, Gonzague de Pinieux, Corinne Bouvier
The infiltration by numerous osteoclastic giant cells is a frequent finding in bone tumors and pseudo-tumors. Pathologists must integrate clinical and radiological data to achieve a correct diagnosis in bone pathology. Benign giant-cell rich lesions of bone encompass giant cell tumor of bone, aneurysmal bone cyst, chondroblastoma, brown tumor and fibrous cortical defect/non-ossifying fibroma. Amongst malignant neoplasms, variants of conventional osteosarcoma, undifferentiated pleomorphic sarcoma, leiomyosarcoma and bone metastasis must be discussed...
March 23, 2018: Annales de Pathologie
https://www.readbyqxmd.com/read/29567036/fibrocartilaginous-metaplasia-identified-in-the-long-head-of-the-biceps-brachii
#18
Carlo Bottegoni, Luca Farinelli, Alberto Aquili, Sandra Manzotti, Marco Baldini, Antonio Gigante
BACKGROUND: In the glenohumeral joint, the long head of biceps brachii (LHBB) is exposed to tension and compression loading. The short head of biceps brachii (SHBB) works only in tension. It is known that tendon under compression might develop fibrocartilaginous metaplasia that improves the resistance to compression but reduces the resistance to tension. This study evaluated the presence of cartilage in LHBB and SHBB samples, supporting its possible role in tendon tear. METHODS: Between 2014 and 2016, 13 samples of LHBB and SHBB were collected during surgery for shoulder instability, glenohumeral arthritis, and massive rotator cuff tears...
March 19, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29545993/combined-staining-techniques-for-demonstration-of-staphylococcus-aureus-biofilm-in-routine-histopathology
#19
Louise Kruse Jensen, Nicole Lind Henriksen, Thomas Bjarnsholt, Kasper Nørskov Kragh, Henrik Elvang Jensen
Aim: Visualization of Staphylococcus aureus biofilm using histochemical staining and combined histochemistry (HC) and immunohistochemistry (IHC). Methods: The ability of S. aureus S54F9 to form biofilm was tested in vitro . Hereafter, infected bone tissue was collected from two different porcine models of osteomyelitis inoculated with S. aureus strain S54F9. The infection time was five and fifteen days, respectively. Twenty-five different histochemical staining protocols were tested in order to find the stains that could identify extracellular biofilm matrix...
2018: Journal of Bone and Joint Infection
https://www.readbyqxmd.com/read/29540650/glycoconjugate-expression-in-the-olfactory-bulb-of-the-premetamorphic-larva-of-the-japanese-sword-tailed-newt-cynops-ensicauda
#20
Toshiyasu Matsui, Yasushi Kobayashi
We examined the organization of the olfactory organ and assessed the lectin histochemistry to investigate the glycoconjugate distribution of the olfactory bulb in premetamorphic larvae of Cynops ensicauda. The nasal cavity was an oval chamber that contained olfactory epithelium and a primitive vomeronasal organ. Secretory products were found in the supporting cells of the two sensory epithelia and in the respiratory cells. Ten lectins bound to the olfactory and vomeronasal nerve fibers as well as to the glomeruli in the olfactory bulb...
March 15, 2018: Journal of Veterinary Medical Science
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