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https://www.readbyqxmd.com/read/29763384/the-effects-of-dihydroartemisinin-on-inflammatory-bowel-disease-related-bone-loss-in-a-rat-model
#1
Xingtao Ge, Zhijian Chen, Zhenjie Xu, Fang Lv, Kewei Zhang, Yu Yang
Bone loss is one of the important extra-intestinal manifestations in patients with inflammatory bowel diseases (IBDs). Compounds derived from natural products have been used to treat IBDs. However, the role of natural products on IBD-induced bone loss is not completely clarified. In the present study, we observed the effects of dihydroartemisinin (DHA), an antimalaria drug, on IBD and IBD-induced bone loss in a rat model. Chronic IBD model was established in Sprague-Dawley rats by giving them 2.5% dextran sodium sulfate in drinking water...
May 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29755473/differential-effect-of-viable-versus-necrotic-neutrophils-on-mycobacterium-tuberculosis-growth-and-cytokine-induction-in-whole-blood
#2
David M Lowe, Julie Demaret, Nonzwakazi Bangani, Justine K Nakiwala, Rene Goliath, Katalin A Wilkinson, Robert J Wilkinson, Adrian R Martineau
Neutrophils exert both positive and negative influences on the host response to tuberculosis, but the mechanisms by which these differential effects are mediated are unknown. We studied the impact of live and dead neutrophils on the control of Mycobacterium tuberculosis using a whole blood bioluminescence-based assay, and assayed supernatant cytokine concentrations using Luminex™ technology and ELISA. CD15+ granulocyte depletion from blood prior to infection with M. tuberculosis -lux impaired control of mycobacteria by 96 h, with a greater effect than depletion of CD4+, CD8+, or CD14+ cells ( p  < 0...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29725438/lower-gingival-squamous-cell-carcinoma-with-brain-metastasis-during-long-term-cetuximab-treatment-a-case-report
#3
Tomofumi Naruse, Mitsuko Tokuhisa, Souichi Yanamoto, Yuki Sakamoto, Kohei Okuyama, Hiroki Tsuchihashi, Masahiro Umeda
Long-term cetuximab treatment can lead to acquired resistance, and tumor progression and/or new lesions often occur. The present report describes a case of lower gingival squamous cell carcinoma with brain metastasis during long-term cetuximab treatment in a 60-year-old man, including findings of an immunohistochemical study. The resected primary tumors, biopsy of the lung metastasis before administration of cetuximab, and brain metastasis specimens mediated by cetuximab were immunohistochemically examined...
May 2018: Oncology Letters
https://www.readbyqxmd.com/read/29719465/antinociceptive-and-anti-inflammatory-effects-of-ginsenoside-rf-in-a-rat-model-of-incisional-pain
#4
Min Kyoung Kim, Hyun Kang, Chong Wha Baek, Yong Hun Jung, Young Cheol Woo, Geun Joo Choi, Hwa Yong Shin, Kyung Soo Kim
Background: Ginseng saponin has long been used as a traditional Asian medicine and is known to be effective in treating various kinds of pain. Ginsenoside Rf is one of the biologically active saponins found in ginseng. We evaluated ginsenoside Rf's antinociceptive and anti-inflammatory effects, and its mechanism of action on adrenergic and serotonergic receptors, in an incisional pain model. Methods: Mechanical hyperalgesia was induced via plantar incision in rats followed by intraperitoneal administration of increasing doses of ginsenoside Rf (vehicle, 0...
April 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29703889/necroptosis-promotes-cell-autonomous-activation-of-proinflammatory-cytokine-gene-expression
#5
Kezhou Zhu, Wei Liang, Zaijun Ma, Daichao Xu, Shuangyi Cao, Xiaojuan Lu, Nan Liu, Bing Shan, Lihui Qian, Junying Yuan
Necroptosis, a form of regulated necrotic cell death, is mediated by receptor interacting protein 1 (RIPK1), RIPK3, and mixed lineage kinase domain-like protein (MLKL). However, the mechanism by which necroptosis promotes inflammation is still unclear. Here we report that the expression of cytokines is robustly upregulated in a cell-autonomous manner during necroptosis induced by tumor necrosis factor alpha (TNFα). We demonstrate that TNFα-induced necroptosis leads to two waves of cytokine production. The first wave, more transient and weaker than the second, is in response to TNFα alone; whereas the second wave depends upon the necroptotic signaling...
April 27, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29686118/pearls-oy-sters-the-critical-role-of-histopathology-in-diagnosing-cancer-associated-necrotizing-cns-vasculitis
#6
Joshua Sheehan, Jessica Tate, Ryan Mott, Carol Geer, Rachel Wolfe, Roy E Strowd, Amy Guzik
OBJECTIVE: To highlight the importance of a broad differential and histopathologic confirmation in patients with newly diagnosed cancer with brain lesions atypical for CNS metastasis. METHODS: We report 2 cases of biopsy-proven CNS vasculitis in patients undergoing treatment for a newly diagnosed nonmetastatic cancer. Comprehensive medical record review was performed to identify the clinical presentation, representative neuroimaging, histopathologic features, and response to treatment...
April 24, 2018: Neurology
https://www.readbyqxmd.com/read/29684818/glut1-protects-prostate-cancer-cells-from-glucose-deprivation-induced-oxidative-stress
#7
Pedro Gonzalez-Menendez, David Hevia, Rebeca Alonso-Arias, Alejandro Alvarez-Artime, Aida Rodriguez-Garcia, Sandrina Kinet, Ivan Gonzalez-Pola, Naomi Taylor, Juan C Mayo, Rosa M Sainz
Glucose, chief metabolic support for cancer cell survival and growth, is mainly imported into cells by facilitated glucose transporters (GLUTs). The increase in glucose uptake along with tumor progression is due to an increment of facilitative glucose transporters as GLUT1. GLUT1 prevents cell death of cancer cells caused by growth factors deprivation, but there is scarce information about its role on the damage caused by glucose deprivation, which usually occurs within the core of a growing tumor. In prostate cancer (PCa), GLUT1 is found in the most aggressive tumors, and it is regulated by androgens...
April 12, 2018: Redox Biology
https://www.readbyqxmd.com/read/29681977/effects-of-4-week-intervention-with-ulmus-macrocarpa-hance-extract-on-immune-function-biomarkers-in-healthy-adults-a-randomized-controlled-trial
#8
A Ra Cho, Sang Yeoup Lee, Young Hye Cho, Cheol Min Kim, Sung Goo Kim
Ulmus macrocarpa extract has been shown to have immune-related effects in animals, but no studies have yet been performed in humans. This randomized, double-blind, placebo-controlled trial was conducted to determine the effect of short-term administration of Ulmus macrocarpa Hance extract (UME) on immune function biomarkers and its safety in human subjects. Fifty-eight subjects were randomly assigned to a UME group or a placebo group. Subjects in the UME group were given 500 mg per day of UME orally for 4 weeks...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29644528/a-novel-semi-synthetic-diterpenoid-16-r-and-s-phenylamino-cleroda-3-13-14-z-dien-15-16-olide-pgea-an-inhibits-the-growth-and-cell-survival-of-human-neuroblastoma-cell-line-sh-sy5y-by-modulating-p53-pathway
#9
Syed Saad Hussain, Kinza Rafi, Shaheen Faizi, Zaid Abdul Razzak, Shabana U Simjee
Neuroblastoma being the most common extracranial pediatric solid tumor accounts for 15% of overall cancer-related childhood mortalities. Resistance to chemotherapeutic drugs is one of the limiting factors for positive prognosis for neuroblastoma. Therefore, there is always a need for developing new therapeutic moieties which can become a future prospect of neuroblastoma therapy. Terpenoids being the largest natural compounds have demonstrated many biological activities including anticancer activity. Keeping in mind the role of terpenoids in biological system, we aimed to identify novel semi-synthetic terpenoid derived from cleroda diterpene, 16-oxo-cleroda-3,13(14)E-diene-15-oic acid (1) as a potential anticancer moiety against neuroblastoma...
April 11, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29624700/sarcomatoid-pilomatrix-carcinoma
#10
Angel Fernandez-Flores, David S Cassarino
Pilomatrical (pilomatrix) carcinoma is a rare cutaneous adnexal tumor with matrical differentiation and recurrent and metastatic potential. Sarcomatoid pilomatrix carcinoma is a rare variant which shows a sarcomatoid component intermingling with the epithelial one. There are only four cases previously published. We present an additional case on the hand of a 78 year-old man which appeared as a 6 mm hyperkeratotic ─focally ulcerated─ plaque. A shave biopsy demonstrated a dermal infiltrative neoplasm, composed of markedly atypical-appearing basaloid cells with focal necrotic/ghost cells, as well as an intimately associated population of atypical oval to spindle-shaped cells...
April 6, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29616016/heparan-sulfate-induces-necroptosis-in-murine-cardiomyocytes-a-medical-in-silico-approach-combining-in-vitro-experiments-and-machine-learning
#11
Elisabeth Zechendorf, Phillip Vaßen, Jieyi Zhang, Ahmed Hallawa, Antons Martincuks, Oliver Krenkel, Gerhard Müller-Newen, Tobias Schuerholz, Tim-Philipp Simon, Gernot Marx, Gerd Ascheid, Anke Schmeink, Guido Dartmann, Christoph Thiemermann, Lukas Martin
Life-threatening cardiomyopathy is a severe, but common, complication associated with severe trauma or sepsis. Several signaling pathways involved in apoptosis and necroptosis are linked to trauma- or sepsis-associated cardiomyopathy. However, the underling causative factors are still debatable. Heparan sulfate (HS) fragments belong to the class of danger/damage-associated molecular patterns liberated from endothelial-bound proteoglycans by heparanase during tissue injury associated with trauma or sepsis. We hypothesized that HS induces apoptosis or necroptosis in murine cardiomyocytes...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29534658/gene-expression-profile-of-toll-like-receptor-adaptor-interferon-regulatory-factor-cytokine-axis-during-liver-regeneration-after-partial-ischemia-reperfusion-injury
#12
Meysam Nasiri, Mohammad-Hossein Karimi, Negar Azarpira, Iraj Saadat
OBJECTIVES: Toll-like receptors and downstream signal transduction pathways play pivotal roles in induction of inflammation, which is crucial for liver injury and regeneration. MATERIALS AND METHODS: Using a mouse model of partial hepatic ischemia-reperfusion injury followed by a 28-day time course for liver repair and regeneration, we assessed gene expression levels for Toll-like receptors, myeloid differentiation primary response 88, TIR-domain-containing adapter-inducing interferon-β, nuclear factor κB, interferon regulatory factors, tumor necrosis factor-α, and interleukins 1β and 6 at days 1, 4, 7, 14, and 28 after reperfusion in liver and blood cells by quantitative polymerase chain reaction...
March 9, 2018: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29491645/hepatoprotective-effects-of-nonpolar-extracts-from-inflorescences-of-thistles-cirsium-vulgare-and-cirsium-ehrenbergii-on-acute-liver-damage-in-rat
#13
Eduardo Fernández-Martínez, Maribel Jiménez-Santana, Mónica Centeno-Álvarez, Jose Martín Torres-Valencia, Mineko Shibayama, Raquel Cariño-Cortés
Background: Drugs for the treatment of liver diseases are scarce and not effective enough. Some species of the genus Cirsium possess hepatoprotective activity. There are no studies on the hepatoprotective effects of nonpolar extracts from inflorescences of thistles Cirsium vulgare and Cirsium ehrenbergii , and there are few reports on their chemical composition. Objective: The aim is to obtain the hexane extract from inflorescences of both thistles and to identify preliminarily their main chemical component, and to evaluate the hepatoprotective properties of the extracts...
January 2018: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29491429/simulated-microgravity-inhibits-cell-focal-adhesions-leading-to-reduced-melanoma-cell-proliferation-and-metastasis-via-fak-rhoa-regulated-mtorc1-and-ampk-pathways
#14
Xin Tan, Aizhang Xu, Tuo Zhao, Qin Zhao, Jun Zhang, Cuihong Fan, Yulin Deng, Andrew Freywald, Harald Genth, Jim Xiang
Simulated microgravity (SMG) was reported to affect tumor cell proliferation and metastasis. However, the underlying mechanism is elusive. In this study, we demonstrate that clinostat-modelled SMG reduces BL6-10 melanoma cell proliferation, adhesion and invasiveness in vitro and decreases tumor lung metastasis in vivo. It down-regulates metastasis-related integrin α6β4, MMP9 and Met72 molecules. SMG significantly reduces formation of focal adhesions and activation of focal adhesion kinase (FAK) and Rho family proteins (RhoA, Rac1 and Cdc42) and of mTORC1 kinase, but activates AMPK and ULK1 kinases...
February 28, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29478919/intravoxel-incoherent-motion-diffusion-weighted-mr-imaging-for-early-evaluation-of-the-effect-of-radiofrequency-ablation-in-rabbit-liver-vx2-tumors
#15
Lian Shanshan, Shi Feng, Wei Kaikai, Zhang Yijun, Liu Huiming, Xie Chuanmiao
RATIONALE AND OBJECTIVES: This study aims to investigate the value of intravoxel incoherent motion (IVIM)-derived parameters for early evaluation of the efficiency of radiofrequency ablation (RFA) treatment for rabbit liver VX2 tumor. MATERIALS AND METHODS: Eighteen rabbit liver VX2 tumor models were constructed, and computed tomography-guided RFA was performed. One day before and 7 days after RFA, 18 models underwent magnetic resonance imaging, including contrast-enhanced imaging and IVIM diffusion-weighted imaging with 16 b-factors (0-1000 s/mm2 )...
February 22, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29474446/physicell-an-open-source-physics-based-cell-simulator-for-3-d-multicellular-systems
#16
Ahmadreza Ghaffarizadeh, Randy Heiland, Samuel H Friedman, Shannon M Mumenthaler, Paul Macklin
Many multicellular systems problems can only be understood by studying how cells move, grow, divide, interact, and die. Tissue-scale dynamics emerge from systems of many interacting cells as they respond to and influence their microenvironment. The ideal "virtual laboratory" for such multicellular systems simulates both the biochemical microenvironment (the "stage") and many mechanically and biochemically interacting cells (the "players" upon the stage). PhysiCell-physics-based multicellular simulator-is an open source agent-based simulator that provides both the stage and the players for studying many interacting cells in dynamic tissue microenvironments...
February 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29470288/digested-early-preterm-human-milk-suppresses-tumor-necrosis-factor-induced-inflammation-and-cytotoxicity-in-intestinal-epithelial-cells
#17
Yimin Chen, Aloka Patel, Paula P Meier, Giamila Fantuzzi
OBJECTIVES: The aim of this study was to determine the effect of digested whole human milk (HM; first sample available after birth from mothers of premature infants) on inflammation, oxidative stress, and cytotoxicity in Caco-2 human intestinal epithelial cells stimulated with lipopolysaccharides or tumor necrosis factor (TNF) to mimic the potential in vivo insults facing the premature infant's gastrointestinal tract. METHODS: Fully differentiated Caco-2 cells were exposed to digested HM (n = 10; samples from 10 different individuals) before stimulation with lipopolysaccharides, TNF, or no stimulation overnight...
February 21, 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29450993/near-infrared-photoimmunotherapy-with-combined-exposure-of-external-and-interstitial-light-sources
#18
Yasuhiro Maruoka, Tadanobu Nagaya, Kazuhide Sato, Fusa Ogata, Shuhei Okuyama, Peter L Choyke, Hisataka Kobayashi
Near infrared photoimmunotherapy (NIR-PIT) is a new target-cell-specific cancer treatment that induces highly selective necrotic/immunogenic cell death after systemic administration of a photoabsorber antibody conjugate and subsequent NIR light exposure. However, the depth of NIR light penetration in tissue (approximately 2 cm) with external light sources limits the therapeutic effects of NIR-PIT. Interstitial light exposure using cylindrical diffusing optical fibers can overcome this limitation. The purpose in this study was to compare three NIR light delivery methods for treating tumors with NIR-PIT using a NIR laser system at an identical light energy; external exposure alone, interstitial exposure alone, and the combination...
February 21, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29436604/cav-1-2-and-cav-2-2-expression-is-regulated-by-different-endogenous-ghrelin-levels-in-pancreatic-acinar-cells-during-acute-pancreatitis
#19
Jie Zhou, Mengbin Qin, Huilin Wang, Jiaping He, Hongzong Fu, Huirong Shi, Zhihai Liang, Guodu Tang
Ghrelin influences pancreatic endocrine and exocrine functions, regulates intracellular calcium [Ca2+]i levels, and has an anti-inflammatory role in acute pancreatitis. This study investigated the role of endogenous ghrelin in the expression of Cav 1.2 (L-type of Ca2+ channel) and Cav 2.2 (N-type of Ca2+ channel) in acute pancreatitis. For this purpose, acute edematous pancreatitis (AEP) and acute necrotizing pancreatitis (ANP) rat models were established. Cav 1.2 and Cav 2.2 expression was assessed by immunohistochemistry in the pancreatic tissues of rats; ghrelin, interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) serum levels were detected using ELISA...
May 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29434948/granulocyte-colony-stimulating-factor-producing-mucinous-cystic-neoplasm-with-an-associated-invasive-carcinoma-of-the-pancreas
#20
Kazuhide Shimamatsu, Yoshiki Naito, Yutaro Mihara, Masamichi Nakayama, Masahiko Tanigawa, Yushi Abe, Ken Nakamura, Toshihiro Araki, Kenji Sakata, Kazunori Noguchi, Jun Akiba, Hirohisa Yano, Osamu Nakashima
The present case study documents an autopsy case of granulocyte-colony stimulating factor (G-CSF)-producing mucinous cystic neoplasm (MCN), with an associated invasive carcinoma of the pancreas. A 65-year-old woman presented to Omuta City Hospital (Omuta Japan) with a primary complaint of abdominal pain. Multiple liver nodules and a pancreatic cyst were detected upon abdominal computed tomography. Initially, liver abscess was suspected as the patient exhibited leukocytosis and elevated C-reactive protein level...
February 2018: Oncology Letters
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