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https://www.readbyqxmd.com/read/28938533/trans-sialidase-based-vaccine-candidate-protects-against-trypanosoma-cruzi-infection-not-only-inducing-an-effector-immune-response-but-also-affecting-cells-with-regulatory-suppressor-phenotype
#1
Estefanía Prochetto, Carolina Roldán, Iván A Bontempi, Daiana Bertona, Luz Peverengo, Miguel H Vicco, Luz M Rodeles, Ana R Pérez, Iván S Marcipar, Gabriel Cabrera
Prophylactic and/or therapeutic vaccines have an important potential to control Trypanosoma cruzi (T. cruzi)infection. The involvement of regulatory/suppressor immune cells after an immunization treatment and T. cruzi infection has never been addressed. Here we show that a new trans-sialidase-based immunogen (TSf) was able to confer protection, correlating not only with beneficial changes in effector immune parameters, but also influencing populations of cells related to immune control. Regarding the effector response, mice immunized with TSf showed a TS-specific antibody response, significant delayed-type hypersensitivity (DTH) reactivity and increased production of IFN-γ by CD8+ splenocytes...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28937434/th17-response-of-borderline-lepromatous-leprosy-inhibits-rash-manifestation-of-dapsone-hypersensitivity-syndrome-case-report
#2
Tamara de Nardo Vanzela, Fred Bernardes Filho, Carlos Gustavo Wambier, Francesca Maia Faria, Norma Tiraboschi Foss, Marco Andrey Cipriani Frade
BACKGROUND: Dapsone hypersensitivity syndrome (DHS) is a rare, but potentially life-threatening reaction to dapsone. OBJECTIVE: Evaluation of immunological factors involved in the sparing of borderline-lepromatous (BL) leprosy patches by the severe exanthema related to DHS. METHODS: The authors describe a 19-year-old man with borderline-lepromatous leprosy with a recent diffuse rash, sparing only the hypochromic patches of leprosy, generalized lymphadenopathy, hepatomegaly, and jaundice 25 days after the start of multibacillary multidrug therapy...
September 11, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28936910/modulation-of-the-gut-microbiota-a-focus-on-treatments-for-irritable-bowel-syndrome
#3
Lucinda A Harris, Noemi Baffy
Irritable bowel syndrome (IBS), which is characterized by recurrent abdominal pain and disordered bowel habits, is one of the most common functional bowel disorders. IBS is a substantial burden on both patient health-related quality of life and health care costs. Several pathophysiologic mechanisms have been postulated for the occurrence of IBS, including altered gastrointestinal motility, visceral hypersensitivity, changes in gut permeability, immune activation, gut-brain dysregulation, autonomic nervous system dysfunction, and changes in the gut microbiota...
September 22, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28936224/role-of-crrlk1l-cell-wall-sensors-hercules1-and-2-theseus1-and-feronia-in-growth-adaptation-triggered-by-heavy-metals-and-trace-elements
#4
Julia Richter, Marie Ploderer, Gaëlle Mongelard, Laurent Gutierrez, Marie-Theres Hauser
Cell walls are not only a protective barrier surrounding protoplasts but serve as signaling platform between the extracellular environment and the intracellular physiology. Ions of heavy metals and trace elements, summarized to metal ions, bind to cell wall components, trigger their modification and provoke growth responses. To examine if metal ions trigger cell wall sensing receptor like kinases (RLKs) of the Catharanthus roseus RLK1-like (CrRLK1L) family we employed a molecular genetic approach. Quantitative transcription analyses show that HERCULES1 (HERK1), THESEUS1 (THE1), and FERONIA (FER) were differently regulated by cadmium (Cd), nickel (Ni), and lead (Pb)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28935759/lymphangiogenesis-facilitates-initial-lymph-formation-and-enhances-the-dendritic-cell-mobilizing-chemokine-ccl21-without-affecting-migration
#5
Tine V Karlsen, Tore Reikvam, Anne Tofteberg, Elham Nikpey, Trude Skogstrand, Marek Wagner, Olav Tenstad, Helge Wiig
OBJECTIVE: Lymphatic vessels play an important role in body fluid, as well as immune system homeostasis. Although the role of malfunctioning or missing lymphatics has been studied extensively, less is known on the functional consequences of a chronically expanded lymphatic network or lymphangiogenesis. APPROACH AND RESULTS: To this end, we used K14-VEGF-C (keratin-14 vascular endothelial growth factor-C) transgenic mice overexpressing the vascular endothelial growth factor C in skin and investigated the responses to inflammatory and fluid volume challenges...
September 21, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28935260/insights-of-lr28-mediated-wheat-leaf-rust-resistance-transcriptomic-approach
#6
Dharmendra Singh, Dhananjay Kumar, Lopamudra Satapathy, Jyoti Pathak, Saket Chandra, Adnan Riaz, Govindraj Bhaganagre, Raman Dhariwal, Manish Kumar, Kumble Vinod Prabhu, Harindra Singh Balyan, Pushpendra Kumar Gupta, Kunal Mukhopadhyay
Leaf rust is a fungal disease that causes severe yield losses in wheat. Resistant varieties with major and quantitative resistance genes are the most effective method to control the disease. However, the main problem is inadequate information for understanding resistance mechanism and its usefulness. This paper presents Lr28 mediated genome-wide response of known and unknown genes during wheat-Puccinia triticina interaction. In this study, we prepared Serial Analysis of Gene Expression (SAGE) libraries using seedling wheat mRNA for infected and mock conditions...
September 18, 2017: Gene
https://www.readbyqxmd.com/read/28934532/preemptive-caffeine-administration-blocks-the-increase-in-postoperative-pain-caused-by-previous-sleep-loss-in-the-rat-a-potential-role-for-preoptic-adenosine-a2a-receptors-in-sleep-pain-interactions
#7
Viviane S Hambrecht-Wiedbusch, Maya Gabel, Linda J Liu, John P Imperial, Angelo V Colmenero, Giancarlo Vanini
Sleep and pain are reciprocally related, but the precise mechanisms underlying this relationship are poorly understood. This study used a rat model of surgical pain to examine the effect of previous sleep loss on postoperative pain and tested the hypothesis that preoptic adenosinergic mechanisms regulate sleep-pain interactions. Relative to ad libitum sleep, 6 hours of total sleep deprivation prior to a surgical incision significantly enhanced postoperative mechanical hypersensitivity in the affected paw and prolonged the time to recovery from surgery...
September 1, 2017: Sleep
https://www.readbyqxmd.com/read/28933663/type-iii-hypersensitivity-reactions-to-a-b-cell-epitope-antigen-are-abrogated-using-a-depot-forming-vaccine-platform
#8
Lisa D MacDonald, Alecia MacKay, Valarmathy Kaliaperumal, Genevieve Weir, Andrea Penwell, Rajkannan Rajagopalan, Joanne Langley, Scott Halperin, Marc Mansour, Marianne M Stanford
Peptide antigens are combined with an adjuvant in order to increase immunogenicity in vivo. The immunogenicity and safety of a RSV vaccine formulated in a novel oil-based platform, DepoVax™ (DPX), was compared to an alum formulation. A peptide B cell epitope derived from RSV small hydrophobic ectodomain (SHe) served as the antigen. Both vaccines induced SHe-specific antibodies after immunization of mice. A single dose of the DPX-based formulation resulted in anti-SHe titres for up to 20 weeks. Boosting with Alum-SHe, but not with DPX-SHe, led to unexpected clinical signs such as decreased activity, cyanosis and drop in body temperature in mice but not in rabbits...
September 21, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28932875/-severe-cutaneous-drug-reactions-in-children
#9
REVIEW
M Mockenhaupt
Among severe drug reactions in children, besides Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), a specific form of hypersensitivity syndrome which is nowadays known as "drug reaction with eosinophilia and systemic symptoms" (DRESS) has to be mentioned. Whereas SJS/TEN is considered one reaction entity of different severity, DRESS has to be distinguished from SJS/TEN but also from other severe exanthems due to multiorgan involvement. Although SJS/TEN is generally referred to as a drug reaction, only about 75% of all cases are actually caused by medications and in children it is only about 50%...
September 20, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28932406/large-scale-survey-to-estimate-the-prevalence-of-disorders-for-192-kennel-club-registered-breeds
#10
B M Wiles, A M Llewellyn-Zaidi, K M Evans, D G O'Neill, T W Lewis
BACKGROUND: Pedigree or purebred dogs are often stated to have high prevalence of disorders which are commonly assumed to be a consequence of inbreeding and selection for exaggerated features. However, few studies empirically report and rank the prevalence of disorders across breeds although such data are of critical importance in the prioritisation of multiple health concerns, and to provide a baseline against which to explore changes over time. This paper reports an owner survey that gathered disorder information on Kennel Club registered pedigree dogs, regardless of whether these disorders received veterinary care...
2017: Canine Genetics and Epidemiology
https://www.readbyqxmd.com/read/28931767/musical-instrument-associated-health-issues-and-their-management
#11
Kae Okoshi, Taro Minami, Masahiro Kikuchi, Yasuko Tomizawa
Playing musical instruments can bring joy to people, but can also cause a wide variety of health issues that range from mild disorders to potentially fatal conditions. Although sports medicine is an established medical subspecialty, relatively few studies have investigated the health issues associated with musical instruments. Here we present an overview of these health issues. These include infections due to microorganisms, allergic reactions, as well as mechanical injuries from sustained high pressures within the oral, mediastinal, thoracic, and abdominal cavities...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28931666/trpa1-activation-in-a-human-sensory-neuronal-model-relevance-to-cough-hypersensitivity
#12
Rebecca Clarke, Kevin Monaghan, Imad About, Caoimhin S Griffin, Gerard P Sergeant, Ikhlas El Karim, J Graham McGeown, S Louise Cosby, Timothy M Curtis, Lorcan P McGarvey, Fionnuala T Lundy
The cough reflex becomes hyperresponsive in acute and chronic respiratory diseases, but understanding the underlying mechanism is hampered by difficulty accessing human tissue containing both nerve endings and neuronal cell bodies. We refined an adult stem cell sensory neuronal model to overcome the limited availability of human neurones and applied the model to study transient receptor potential ankyrin 1 (TRPA1) channel expression and activation.Human dental pulp stem cells (hDPSCs) were differentiated towards a neuronal phenotype, termed peripheral neuronal equivalents (PNEs)...
September 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28930716/antinociceptive-effect-of-ghrelin-in-a-rat-model-of-irritable-bowel-syndrome-involves-trpv1-opioid-systems
#13
Yuqing Mao, Zhengyang Li, Kan Chen, Huafang Yu, Shaoren Zhang, Miao Jiang, Yuanhua Ma, Chunli Liang, Hongyan Liu, Huanqing Li, Qian Hua, Hao Zhou, Yonghong Sun, Xiaoming Fan
BACKGROUND/AIMS: Irritable bowel syndrome (IBS), defined as recurrent abdominal pain and changes in bowel habits, seriously affects quality of life and ability to work. Ghrelin is a brain-gut hormone, which has been reported to show antinociceptive effects in peripheral pain. We investigated the effect of ghrelin on visceral hypersensitivity and pain in a rat model of IBS. METHODS: Maternal deprivation (MD) was used to provide a stress-induced model of IBS in Wistar rats...
September 20, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28929775/hypersensitivity-to-azathioprine-in-a-patient-with-crohn-s-disease-a-case-report
#14
Mafalda Sousa, Luísa Proença, João Carvalho
Azathioprine (AZA) is commonly used in inflammatory bowel disease and many other medical diseases. The most common adverse events of AZA include gastrointestinal effects, hepatotoxicity, myelotoxicity and pancreatitis.
September 18, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28929493/pediatric-vasculitis-a-single-center-experience
#15
Alexios Alexopoulos, Maria Dakoutrou, Kalliopi Stefanaki, George Chrousos, Talia Kakourou
BACKGROUND: Existing studies of children with vasculitis are limited. The aim of this study was to assess the epidemiology, clinical manifestations, laboratory findings, course, and outcome of Greek children presenting with vasculitic rash. METHODS: The relevant data included in the study were collected retrospectively using a standardized form from children who were admitted into our department between 2003 and 2013, with the provisional diagnosis of vasculitis of the skin...
September 19, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28928989/an-unusual-case-of-recurrent-hypersensitivity-reaction-associated-with-kounis-like-acute-coronary-syndrome
#16
Shanker Kundumadam, Vivek Reddy, Sagar Mallikethi Reddy, Pradeep Kathi, Aiden Abidov
There have been multiple reports of allergic reactions associated with acute coronary syndromes. This has been classically described as Kounis syndrome. We present an unusual case of 70-year-old male with multiple prior hypersensitivity reactions and history of coronary artery bypass grafting who presented recurrent episode of severe angioedema and anaphylaxis. He responded to epinephrine but subsequently developed a non-ST elevation myocardial infarction with worsening heart failure. Our case is unique in that, unlike classic Kounis syndrome, the acute coronary event in this case did not present concurrently with the allergic reaction; rather it took nearly 48 hours to present...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28928658/anti-inflammatory-antinociceptive-and-antioxidant-activities-of-methanol-and-aqueous-extracts-of-anacyclus-pyrethrum-roots
#17
Houria Manouze, Otmane Bouchatta, A Chemseddoha Gadhi, Mohammed Bennis, Zahra Sokar, Saadia Ba-M'hamed
Anacyclus pyrethrum (L.) is a plant widely used in Moroccan traditional medicine to treat inflammatory and painful diseases. The objective of the present study was to evaluate the antinociceptive, anti-inflammatory and antioxidant activities of aqueous and methanol extracts of Anacyclus pyrethrum roots (AEAPR and MEAPR). The anti-inflammatory effect of AEAPR and MEAPR was determined in xylene-induced ear edema and Complete Freund's Adjuvant (CFA)-induced paw edema. The antinociceptive activity of AEAPR and MEAPR (125, 250, and 500 mg/kg) administered by gavage was examined in mice by using acetic acid-induced writhing, hot plate, and formalin tests, and the mechanical allodynia were assessed in CFA-induced paw edema...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28928366/fibromyalgia-and-microglial-tnf-%C3%AE-translational-research-using-human-blood-induced-microglia-like-cells
#18
Masahiro Ohgidani, Takahiro A Kato, Masako Hosoi, Makoto Tsuda, Kohei Hayakawa, Chie Hayaki, Rie Iwaki, Noriaki Sagata, Ryota Hashimoto, Kazuhide Inoue, Nobuyuki Sudo, Shigenobu Kanba
Fibromyalgia is a refractory disease characterized by chronic intractable pain and psychological suffering, the cause of which has not yet been elucidated due to its complex pathology. Activation of immune cells in the brain called microglia has attracted attention as a potential underlying pathological mechanism in chronic pain. Until recently, however, technological and ethical considerations have limited the ability to conduct research using human microglia. To overcome this limitation, we have recently developed a technique to create human-induced microglia-like (iMG) cells from human peripheral blood monocytes...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28927908/the-impact-of-the-standard-american-diet-in-rats-effects-on-behavior-physiology-and-recovery-from-inflammatory-injury
#19
Stacie K Totsch, Tammie L Quinn, Larissa J Strath, Laura J McMeekin, Rita M Cowell, Barbara A Gower, Robert E Sorge
BACKGROUND AND AIMS: Obesity is a significant health concern in the Western world and the presence of comorbid conditions suggests an interaction. The overlapping distributions of chronic pain populations and obesity suggests that an interaction may exist. Poor quality diet (high carbohydrates, saturated fats, omega-6 polyunsaturated fatty acids) can lead to increased adiposity which can activate immune cells independent of the activating effect of the diet components themselves. This dual action can contribute to chronic inflammation that may alter susceptibility to chronic pain and prolong recovery from injury...
September 16, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/28925936/an-atypical-local-vesicular-reaction-to-the-yellow-fever-vaccine
#20
Robert H Wauters, Camellia L Hernandez, Maureen M Petersen
Yellow fever vaccine is a live attenuated viral inoculation indicated for patients traveling to endemic areas. The vaccine is generally well tolerated with minimal adverse effects. Typical side effects include malaise, pain at the injection site, and, albeit rarely, immediate hypersensitivity reactions. We present a case of a rare adverse reaction to yellow fever vaccine in which a patient developed vesicular lesions resulting in bullae and circumferential hyperpigmentation.
September 19, 2017: Vaccines
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