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https://www.readbyqxmd.com/read/29163221/the-superficial-dermis-may-initiate-keloid-formation-histological-analysis-of-the-keloid-dermis-at-different-depths
#1
Hu Jiao, Tiran Zhang, Jincai Fan, Ran Xiao
Several studies have reported on certain aspects of the characteristics of different sites within a keloid lesion, but detailed studies on the keloid dermis at different depths within a keloid lesion are scarce. The aim of this study was to investigate the histology of the keloid dermis at different depths. This study included 19 keloid tissue samples that were collected from 19 patients and 19 normal skin samples, which were harvested from subjects without keloids or hypertrophic scar. Samples were studied by light microscopy using routine hematoxylin and eosin histochemical staining, and immunohistochemistry to detect CD20-positive B-lymphocytes and CD3-positive T-lymphocytes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29163071/systematic-morphometry-of-catecholamine-nuclei-in-the-brainstem
#2
Domenico Bucci, Carla L Busceti, Maria T Calierno, Paola Di Pietro, Michele Madonna, Francesca Biagioni, Larisa Ryskalin, Fiona Limanaqi, Ferdinando Nicoletti, Francesco Fornai
Catecholamine nuclei within the brainstem reticular formation (RF) play a pivotal role in a variety of brain functions. However, a systematic characterization of these nuclei in the very same experimental conditions is missing so far. Tyrosine hydroxylase (TH) immune-positive cells of the brainstem correspond to dopamine (DA)-, norepinephrine (NE)-, and epinephrine (E)-containing cells. Here, we report a systematic count of TH-positive neurons in the RF of the mouse brainstem by using stereological morphometry...
2017: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/29161694/immunohistochemical-localization-of-darpp-32-in-the-brain-of-two-lungfishes-further-assessment-of-its-relationship-with-the-dopaminergic-system
#3
Jesús M López, Ruth Morona, Agustín González
The distribution of DARPP-32 (a phosphoprotein related to the dopamine D1 receptor) has been widely used as a means to clarify the brain regions with dopaminoceptive cells, primarily in representative species of tetrapods. The relationship between dopaminergic and dopaminoceptive elements is frequently analyzed using the catecholamine marker tyrosine hydroxylase (TH). In the present study, by means of combined immunohistochemistry, we have analyzed these relationships in lungfishes, the only group of sarcopterygian fishes represented by 6 extant species that are the phylogenetically closest living relatives of tetrapods...
November 22, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/29160406/cheiloscopic-study-among-monozygotic-twins-non-twin-brothers-and-non-relative-individuals
#4
Larissa Chaves Cardoso Fernandes, Julyana de Araújo Oliveira, Bianca Marques Santiago, Patrícia Moreira Rabello, Marcus Vitor Diniz de Carvalho, Reginaldo Inojosa Carneiro Campello, Evelyne Pessoa Soriano
This study aimed to investigate cheiloscopic patterns among monozygotic twins (MT), non-twin siblings (NTS) and unrelated individuals (UI). The sample consisted of 20 pairs of monozygotic twins (G1), 20 pairs of non-twin siblings (G2) and 20 pairs of unrelated individuals (G3). Lip thickness, commissures and grooves were evaluated and the latter were classified as: I - clear-cut vertical grooves; I' - incomplete vertical grooves; II - branched grooves; III - intersecting; IV - reticular grooves and V - undetermined, in 8 labial regions (sub-quadrants)...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29155552/reliably-modeling-the-mechanical-stability-of-rigid-and-flexible-metal-organic-frameworks
#5
Sven M J Rogge, Michel Waroquier, Veronique Van Speybroeck
Over the past two decades, metal-organic frameworks (MOFs) have matured from interesting academic peculiarities toward a continuously expanding class of hybrid, nanoporous materials tuned for targeted technological applications such as gas storage and heterogeneous catalysis. These oft-times crystalline materials, composed of inorganic moieties interconnected by organic ligands, can be endowed with desired structural and chemical features by judiciously functionalizing or substituting these building blocks...
November 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29154687/pyruvate-enhancement-of-cardiac-performance-cellular-mechanisms-and-clinical-application
#6
Robert T Mallet, Albert H Olivencia-Yurvati, Rolf Bünger
Cardiac contractile function is adenosine-5'-triphosphate (ATP)-intensive, and the myocardium's high demand for oxygen and energy substrates leaves it acutely vulnerable to interruptions in its blood supply. The myriad cardioprotective properties of the natural intermediary metabolite pyruvate make it a potentially powerful intervention against the complex injury cascade ignited by myocardial ischemia-reperfusion. A readily oxidized metabolic substrate, pyruvate augments myocardial free energy of ATP hydrolysis to a greater extent than the physiological fuels glucose, lactate and fatty acids, particularly when it is provided at supra-physiological plasma concentrations...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29154199/ultraviolet-b-radiation-down-regulates-ulk1-and-atg7-expression-and-impairs-the-autophagy-response-in-human-keratinocytes
#7
Xu Chen, Li Li, Song Xu, Wenbo Bu, Kun Chen, Min Li, Heng Gu
Autophagy is a self-digestive pathway that helps to maintain cellular homeostasis, and many autophagy-related gene (ATG)s involved the regulation of the autophagy process. Ultraviolet light is a common stressor of skin, but it is unclear how autophagy is regulated after ultraviolet exposure in epidermal keratinocytes. Here, we found that the mRNAs of some key ATG genes such as ULK1, ATG5 and ATG7 exhibited significantly lower levels in the skin tissues of the face and chest with solar ultraviolet exposure, compared with perineal skin...
September 4, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29139359/oral-lichen-planus-a-cross-sectional-descriptive-study-of-33-patients
#8
Virendra N Sehgal, Nazim Hussain Syed, Ashok Aggarwal, Shruti Sehgal
Oral lichen planus (OLP), a well-known entity, is often neglected; however, its assessment is considered essential for evolving future strategies for treatment. Thirty-three patients with OLP from 200 consecutive patients with oral mucosal lesions were studied according to demography. Tobacco chewing, smoking, and alcohol intake were recorded. Examination of the oral cavity, using a head light and tongue depressor, was undertaken to define the morphology of the lesion(s). Colored photographs were an essential part of the process...
2017: Skinmed
https://www.readbyqxmd.com/read/29138697/following-spinal-cord-injury-transected-reticulospinal-tract-axons-develop-new-collateral-inputs-to-spinal-interneurons-in-parallel-with-locomotor-recovery
#9
Zacnicte May, Keith K Fenrich, Julia Dahlby, Nicholas J Batty, Abel Torres-Espín, Karim Fouad
The reticulospinal tract (RtST) descends from the reticular formation and terminates in the spinal cord. The RtST drives the initiation of locomotion and postural control. RtST axons form new contacts with propriospinal interneurons (PrINs) after incomplete spinal cord injury (SCI); however, it is unclear if injured or uninjured axons make these connections. We completely transected all traced RtST axons in rats using a staggered model, where a hemisection SCI at vertebra T10 is followed by a contralateral hemisection at vertebra T7...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29137100/ultrasonic-and-pathological-characteristics-of-ovarian-mucinous-cystic-tumors-with-malignant-mural-nodules-two-cases-report
#10
Yan Zhang, Zheng Yuan, Kai Sun, Peifeng Li
RATIONALE: Sarcomatous or anaplastic carcinoma mural nodules presenting in ovarian mucinous cystic tumors are very rare. Here, we reported the ultrasonic and pathological features of 2 such cases. PATIENT CONCERNS: A 60-year-old woman presented with a complaint of lower abdominal pain. Physical examination revealed a hard, palpable mass in her right lower abdomen with mild tenderness. In addition, a 48-year-old woman presented with left abdominal pain and abdominal fullness...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29130562/the-prognostic-significance-of-pneumothorax-in-patients-with-idiopathic-pulmonary-fibrosis
#11
Koji Nishimoto, Tomoyuki Fujisawa, Katsuhiro Yoshimura, Yasunori Enomoto, Noriyuki Enomoto, Yutaro Nakamura, Naoki Inui, Hiromitsu Sumikawa, Takeshi Johkoh, Thomas V Colby, Takafumi Suda
BACKGROUND AND OBJECTIVE: Pneumothorax is a co-morbidity in patients with idiopathic pulmonary fibrosis (IPF). However, its incidence, risk factors and prognostic significance in IPF remain unclear. The aim of this study was to clarify the incidence and prognostic significance of pneumothorax in patients with IPF, and to further investigate the risk factors for its onset. METHODS: Eighty-four consecutive patients with IPF based on the consensus guideline were included in this study...
November 12, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/29127718/-frontal-eye-field-in-prosimian-galagos-intracortical-microstimulation-and-tracing-studies
#12
Iwona Stepniewska, Pierre Pouget, Jon H Kaas
The frontal eye field (FEF) in prosimian primates was identified as a small cortical region, above and anterior to the anterior frontal sulcus, from which saccadic eye movements were evoked with electrical stimulation. Tracer injections revealed FEF connections with cortical and subcortical structures participating in higher order visual processing. Ipsilateral cortical connections were the densest with adjoining parts of the dorsal premotor and prefrontal cortex (PFC). Label in a region corresponding to supplementary eye field (SEF) of other primates, suggests the existence of SEF in galagos...
November 11, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29124658/atypical-hrct-manifestations-of-pulmonary-sarcoidosis
#13
Diletta Cozzi, Elena Bargagli, Alessandro Giuseppe Calabrò, Elena Torricelli, Federico Giannelli, Edoardo Cavigli, Vittorio Miele
PURPOSE: To present our experience of cases of pulmonary sarcoidosis with atypical HRCT patterns found during 2016 focusing on the differential diagnosis to contribute to the difficult role of the radiologist in the disease identification and to help the clinicians to reach the diagnosis. MATERIALS AND METHODS: The HRCT examinations of 47 patients with sarcoidosis were studied retrospectively. All patients had a histopathological confirm of the disease. 29 (61.7%) show a typical pulmonary pattern and 18 (38...
November 9, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/29123569/diagnostic-dilemma-severe-thrombotic-microangiopathy-in-pregnancy
#14
Sarah Birkhoelzer, Alexandra Belcher, Helen Peet
A diagnostic dilemma occurred when thrombotic microangiopathy developed during pregnancy. The diagnostic criteria of thrombotic microangiopathy include thrombocytopenia (platelets <100) and microangiopathic haemolytic anaemia (including thrombotic thrombocytopenic purpura and haemolytic-uraemic syndrome). An urgent interdisciplinary approach is required to treat thrombotic microangiopathy in pregnancy to differentiate between thrombotic microangiopathy and HELLP syndrome (haemolysis, elevated liver enzymes, low platelets)...
November 2017: J Intensive Care Soc
https://www.readbyqxmd.com/read/29119068/ischemic-stroke-of-midbrain-and-cerebellum-involving-reticular-activating-system
#15
Waleed Sadiq, Madeeha Subhan
The reticular activating system is the part of the brain that maintains the sleep/wake cycle. Any damage to this region can cause hypersomnolence and drowsiness along with altered sensorium. This case presents a patient with cerebellar and midbrain stroke with infarct of the reticular activating system, leading to hypersomnolence, drowsiness, and altered sensorium.
September 1, 2017: Curēus
https://www.readbyqxmd.com/read/29109283/sirp%C3%AE-dendritic-cells-regulate-homeostasis-of-fibroblastic-reticular-cells-via-tnf-receptor-ligands-in-the-adult-spleen
#16
Yasuyuki Saito, Datu Respatika, Satomi Komori, Ken Washio, Taichi Nishimura, Takenori Kotani, Yoji Murata, Hideki Okazawa, Hiroshi Ohnishi, Yoriaki Kaneko, Katsuyuki Yui, Koji Yasutomo, Chikako Nishigori, Yoshihisa Nojima, Takashi Matozaki
In secondary lymphoid organs, development and homeostasis of stromal cells such as podoplanin (Pdpn)-positive fibroblastic reticular cells (FRCs) are regulated by hematopoietic cells, but the cellular and molecular mechanisms of such regulation have remained unclear. Here we show that ablation of either signal regulatory protein α (SIRPα), an Ig superfamily protein, or its ligand CD47 in conventional dendritic cells (cDCs) markedly reduced the number of CD4(+) cDCs as well as that of Pdpn(+) FRCs and T cells in the adult mouse spleen...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29106983/gabab-receptor-subtypes-differentially-regulate-thalamic-spindle-oscillations
#17
REVIEW
Daniel Ulrich, Txomin Lalanne, Martin Gassmann, Bernhard Bettler
Following the discovery of GABAB receptors by Norman Bowery and colleagues, cloning and biochemical efforts revealed that GABAB receptors assemble multi-subunit complexes composed of principal and auxiliary subunits. The principal receptor subunits GABAB1a, GABAB1b and GABAB2 form two heterodimeric GABAB(1a,2) and GABAB(1b,2) receptors that can associate with tetramers of auxiliary KCTD (K(+) channel tetramerization domain) subunits. Experiments with subunit knock-out mice revealed that GABAB(1b,2) receptors activate slow inhibitory postsynaptic currents (sIPSCs) while GABAB(1a,2) receptors function as heteroreceptors and inhibit glutamate release...
October 26, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29097850/middermal-elastolysis-dermal-fibroblasts-cooperate-with-inflammatory-cells-to-the-elastolytic-disorder
#18
Giovanna De Cunto, Arianna Lamberti, Maria Margherita de Santi, Clelia Miracco, Michele Fimiani, Giuseppe Lungarella, Eleonora Cavarra
Little is known about the cause and pathophysiology of middermal elastolysis (MDE). In this condition, variable inflammatory infiltrate may be present or not together with loss of elastic fibres in the middermis that spares both papillary and lower reticular dermis. MDE may be a consequence of abnormal extracellular matrix degradation related to an imbalance between elastolytic enzymes released from inflammatory and resident cells and their naturally occurring inhibitors. However, the cause of this imbalance is still an object of investigation...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29096218/feasibility-of-deep-brain-stimulation-for-controlling-the-lower-urinary-tract-functions-an-animal-study
#19
Shih-Ching Chen, Pei-Yi Chu, Tsung-Hsun Hsieh, Yu-Ting Li, Chih-Wei Peng
OBJECTIVE: To evaluate the feasibility of deep brain stimulation (DBS) and compare the potential of four DBS targets in rats for regulating bladder activity: the periaqueductal gray (PAG), locus coeruleus (LC), rostral pontine reticular nucleus (PnO), and pedunculopontine tegmental nucleus (PPTg). METHODS: A bipolar stimulating electrode was implanted. The effects of DBS on the inhibition and activation of micturition reflexes were investigated by using isovolumetric intravesical pressure recordings...
September 30, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29093389/the-onset-of-eosinophilic-pneumonia-preceding-anti-synthetase-syndrome
#20
Yoshimasa Hachisu, Yasuhiko Koga, Noriaki Sunaga, Chiharu Kashiwagi, Yuri Sawada, Yasuyuki Saito, Yusuke Tsukagoshi, Norimitsu Kasahara, Reiko Sakurai, Hiroaki Tsurumaki, Masakiyo Yatomi, Kyoichi Kaira, Akihiro Ono, Toshitaka Maeno, Takeshi Hisada
A 66-year-old man had been treated with prednisolone for eosinophilic pneumonia for 8 years. His slowly progressing cough and dyspnea were accompanied by elevated levels of fibrotic serological markers and an increased reticular shadow on chest computed tomography images. The patient had recently tested positive for anti-EJ antibodies, a type of anti-aminoacyl-tRNA synthetase antibody; therefore, we diagnosed him with an exacerbation of interstitial pneumonia due to anti-synthetase syndrome (ASS). He was treated with tacrolimus and an increased prednisolone dosage...
November 1, 2017: Internal Medicine
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