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Crossed hypersensitivity

Marco Aurélio Fornazieri, Anibal Rodrigues Neto, Fabio de Rezende Pinna, Fabio Henrique Gobbi Porto, Paulo de Lima Navarro, Richard Louis Voegels, Richard L Doty
OBJECTIVE: Olfaction-related symptoms accompany migraine attacks and some, such as osmophobia, may be useful in differentiating migraine from other types of headaches. However, the types and frequencies of olfactory symptoms associated with migraine have not been well characterized. The goal of this study was to better characterize the olfactory symptoms of migraine. METHODS: A cross-sectional study was devised. One hundred and thirteen patients who met the International Classification of Headache Disorders II criteria for migraine were administered a new 65-item questionnaire specifically focused on olfaction-related experiences (eg, odor-related triggers, osmophobia, cacosmia, phantosmia, olfactory hallucinations, olfactory hypersensitivity, and self-perceived olfactory function)...
October 25, 2016: Headache
Inmaculada Doña, María Salas, James R Perkins, Esther Barrionuevo, Francesco Gaeta, Jose A Cornejo-García, Paloma Campo, Maria José Torres
Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the leading causes of hypersensitivity reactions to drugs, and they are classified in two groups: those induced by non-specific immunological mechanisms (non-allergic or cross-intolerance (CI) reactions), or by specific immunological mechanisms (allergic or selective reactions (SR)). The pathogenesis of CI is associated with their pharmacological activity (COX-1 inhibition), with symptoms due to an imbalance in the arachidonic acid pathway, independently of their chemical structure...
September 28, 2016: Current Pharmaceutical Design
Katherine C Konvinse, Elizabeth J Phillips, Katie D White, Jason A Trubiano
PURPOSE OF REVIEW: Antimicrobials are a leading cause of severe T cell-mediated adverse drug reactions (ADRs). The purpose of this review is to address the current understanding of antimicrobial cross-reactivity and the ready availability of and evidence for in-vitro, in-vivo, and ex-vivo diagnostics for T cell-mediated ADRs. RECENT FINDINGS: Recent literature has evaluated the efficacy of traditional antibiotic allergy management, including patch testing, skin prick testing, intradermal testing, and oral challenge...
October 7, 2016: Current Opinion in Infectious Diseases
Annick Barbaud, Julie Waton
Systemic hypersensitivity (HS) to corticosteroids (CS) is paradoxical but does exist. Some patients with a previous contact allergy to topical CS may develop a systemic contact dermatitis (SCD) while receiving CS orally or intravenously. However, a previous contact sensitization is not mandatory for developing a systemic HS to CS. Acute or delayed urticaria can occur in immediate HS. Immediate HS can be due to excipients, mainly carboxymethylcellulose or to CS themselves. Delayed reactions, mainly maculopapular rash and acute generalized exanthematous pustulosis can occur...
October 12, 2016: Current Pharmaceutical Design
Adriana Ariza, Cristobalina Mayorga, María Salas, Inmaculada Doña, Ángela Martín-Serrano, Ezequiel Pérez-Inestrosa, Dolores Pérez-Sala, Antonio E Guzmán, María I Montañez, María J Torres
The optimal recognition of penicillin determinants, including amoxicillin (AX), by specific IgE antibodies is widely believed to require covalent binding to a carrier molecule. The nature of the carrier and its contribution to the antigenic determinant is not well known. Here we aimed to evaluate the specific-IgE recognition of different AX-derived structures. We studied patients with immediate hypersensitivity reactions to AX, classified as selective or cross-reactors to penicillins. Competitive immunoassays were performed using AX itself, amoxicilloic acid, AX bound to butylamine (AXO-BA) or to human serum albumin (AXO-HSA) in the fluid phase, as inhibitors, and amoxicilloyl-poli-L-lysine (AXO-PLL) in the solid-phase...
October 12, 2016: Scientific Reports
Takashi Suzuki, Naoyuki Morishige, Reiko Arita, Shizuka Koh, Tohru Sakimoto, Rika Shirakawa, Kazunori Miyata, Yuichi Ohashi
BACKGROUND: Phlyctenular keratitis is a hypersensitivity reaction of the cornea, and a complication of eyelid margin disease in children and young adults. In this study, we compared the morphology of the meibomian glands in eyelids between phlyctenular keratitis patients and healthy young adults, using noncontact meibography. METHODS: The study included 16 eyes of 13 patients diagnosed with phlyctenular keratitis and 17 eyes of 17 healthy volunteers. Slit-lamp observations of the cornea and eyelid were performed on all subjects...
October 10, 2016: BMC Ophthalmology
Lene H Garvey
Perioperative hypersensitivity reactions are rare, often life-threatening events, and subsequent investigations to identify the culprit are important to avoid re-exposure. All exposures in the perioperative setting may potentially be the cause of a hypersensitivity reaction, but drugs administered intravenously such as neuromuscular blocking agents (NMBA), induction agents and antibiotics have traditionally been reported to be implicated most commonly. It has recently become apparent that there are geographical differences in sensitization patterns related to variation in exposures, referral patterns and performance and interpretation of investigations...
October 4, 2016: Current Pharmaceutical Design
Karim Elhennawy, Falk Schwendicke
OBJECTIVES: We systematically reviewed treatment modalities for MIH-affected molars and incisors. DATA: Trials on humans with ≥1 MIH molar/incisor reporting on various treatments were included. Two authors independently searched and extracted records. Sample-size-weighted annual failure rates were estimated where appropriate. The risk of bias was assessed using the Newcastle-Ottawa scale. SOURCES: Electronic databases (PubMed, Embase, Cochrane CENTRAL, Google Scholar) were screened, and hand searches and cross-referencing performed...
September 28, 2016: Journal of Dentistry
Bing Cao, Jun Wang, Li Mu, David Chun-Hei Poon, Ying Li
Visceral hypersensitivity (VH) is a key factor of irritable bowel syndrome (IBS). Previous studies have identified an enhanced response of anterior cingulate cortex (ACC) to colorectal distension in VH rats, which can be observed up to 7weeks following colonic anaphylaxis, independent of colonic inflammation. The induction of VH produces a change in the ability to induce subsequent synaptic plasticity at the ACC circuitry. In clinical practice, a positive link between IBS and cognitive impairments has been noted for years, but no animal model has been reported...
September 21, 2016: Experimental Neurology
Aliya Mubarak, Chantal Cyr, Martin St-André, Daniel Paquette, Mutsuko Emond-Nakamura, Louise Boisjoly, Sylvain Palardy, Stéphanie Adin, Iréna Stikarovska
BACKGROUND: Individuals with sensory regulation disorders present with many difficulties in terms of managing emotions, behavior, and motor control. Children with such difficulties are often referred to psychiatric clinics for assessment of their behavioral and emotional problems. Few studies have investigated the role of environmental factors on sensory dysfunctions, and none have specifically studied its association with child attachment in a clinical sample. OBJECTIVE: In this cross-sectional study, we examined the association between sensory regulation and child attachment among preschoolers referred to a psychiatric clinic...
September 15, 2016: Clinical Child Psychology and Psychiatry
Jenny M Porritt, Farzana Sufi, Sarah R Baker
BACKGROUND: The current investigation examined the determinants of oral health experiences associated with dentine hypersensitivity using prospective diary methodology. METHODS: Staff and students from a large UK university who had self-diagnosed dentine hypersensitivity completed an online daily diary and text survey for 2 weeks recording their mood, oral health-related coping behaviours, coping and pain appraisals, pain experiences and functional limitations. Cross sectional and lagged path analyses were employed to examine relationships...
2016: BMC Oral Health
Reza Bahador, Ahmadreza Mirbolook, Sara Arbab, Pooya Derakhshan, Amirmohammad Gholizadeh, Sadegh Abedi
BACKGROUND: Reflex sympathetic dystrophy (RSD) syndrome is a multifactorial disorder with clinical features of neurogenic inflammation that causes hypersensitivity to pain or severe allodynia as well as blood flow problems, swelling, skin discoloration and maladaptive neuroplasticity due to vasomotor disorders. Patients with major trauma are prone to homeostasis leading to inflammatory response syndrome and multiple organ distress syndrome. Several studies have investigated the etiology of this condition, but the cause remains unknown...
May 2016: Trauma Monthly
Marie Westwood, Bram Ramaekers, Shona Lang, Nigel Armstrong, Caro Noake, Shelley de Kock, Manuela Joore, Johan Severens, Jos Kleijnen
BACKGROUND: Allergy is a form of immune-mediated exaggerated sensitivity (hypersensitivity) to a substance that is either inhaled, swallowed, injected or comes into contact with the skin. Foreign substances that provoke allergies are called allergens. It has been claimed that multiplex allergen testing may help in diagnosing the cause of symptoms in patients with an unclear cause of allergy or who are allergic to more than one substance. OBJECTIVES: To evaluate multiplex allergen testing [devices that can measure the presence of multiple immunoglobulin E (IgE) antibodies in a patient's blood at the same time], by assessing (1) clinical effectiveness (allergy symptoms, incidence of acute exacerbations, mortality, adverse events of testing and treatment, health-care presentations or admissions, health-related quality of life); (2) effects on treatment (diet, immunotherapy medications, other potential testing); (3) any additional diagnostic information provided by multiplex allergen testing; and (4) cost-effectiveness (cost of different assessment strategies)...
September 2016: Health Technology Assessment: HTA
Konrad Juczewski, Helen von Richthofen, Claudia Bagni, Tansu Celikel, Gilberto Fisone, Patrik Krieger
Fragile X syndrome (FXS) is a common inherited form of intellectual disability caused by the absence or reduction of the fragile X mental retardation protein (FMRP) encoded by the FMR1 gene. In humans, one symptom of FXS is hypersensitivity to sensory stimuli, including touch. We used a mouse model of FXS (Fmr1 KO) to study sensory processing of tactile information conveyed via the whisker system. In vivo electrophysiological recordings in somatosensory barrel cortex showed layer-specific broadening of the receptive fields at the level of layer 2/3 but not layer 4, in response to whisker stimulation...
September 8, 2016: Neurobiology of Disease
Jung Yeon Hong, Jong Hwan Bae, Kyung Eun Lee, Mina Kim, Min Hee Kim, Hyun Jung Kang, Eun Hye Park, Kyung Sook Yoo, Se Kyoo Jeong, Kyung Won Kim, Kyu Earn Kim, Myung Hyun Sohn
PURPOSE: High-affinity receptor I (FcεRI) on mast cells and basophils plays a key role in the immunoglobulin E (IgE)-mediated type I hypersensitivity mediated by allergen cross-linking of the specific IgE-FcεRI complex. Thus, prevention of IgE binding to FcεRI on these cells is an effective therapy for allergic disease. We have developed a strategy to disrupt IgE binding to FcεRI using an antibody targeting FcεRIα. MATERIALS AND METHODS: Fab fragment antibodies, which lack the Fc domain, with high affinity and specificity for FcεRIα and effective inhibitory activity against IgE-FcεRI binding were screened...
November 2016: Yonsei Medical Journal
Tetsuya Suzuki, Petr Grúz, Masamitsu Honma, Noritaka Adachi, Takehiko Nohmi
Translesion DNA synthesis (TLS) is a cellular defense mechanism against genotoxins. Defects or mutations in specialized DNA polymerases (Pols) involved in TLS are believed to result in hypersensitivity to various genotoxic stresses. Here, DNA polymerase ζ (Pol ζ)-deficient (KO: knockout) and Pol ζ catalytically dead (CD) human cells were established and their sensitivity towards cytotoxic activities of various genotoxins was examined. The CD cells were engineered by altering the DNA sequence encoding two amino acids essential for the catalytic activity of Pol ζ, i...
September 2016: Mutation Research
Kyung Hee Park, Young Woong Son, Sang Chul Lee, Kyunguk Jeong, Da Woon Sim, Hye Jung Park, Sooyoung Lee, Jae Hyun Lee, Jung Won Park
PURPOSE: Clinical features of peanut allergy can range from localized to systemic reactions. Because peanut and birch pollen have cross-reactivity, peanut can lead to localized allergic reaction in Fagales pollen-sensitized oral allergy syndrome (OAS) patients without peanut sensitization per se. The purpose of this study was to discriminate true peanut food allergy from cross-reactive hypersensitivity in birch-sensitized peanut allergy. METHODS: Birch-sensitized (n=81) and peanut anaphylaxis patients (n=12) were enrolled...
November 2016: Allergy, Asthma & Immunology Research
Jia Chen, Feng Yu, Ying Liu, Changqing Du, Xiushan Li, Sirui Zhu, Xianchun Wang, Wenzhi Lan, Pedro L Rodriguez, Xuanming Liu, Dongping Li, Liangbi Chen, Sheng Luan
Receptor-like kinase FERONIA (FER) plays a crucial role in plant response to small molecule hormones [e.g., auxin and abscisic acid (ABA)] and peptide signals [e.g., rapid alkalinization factor (RALF)]. It remains unknown how FER integrates these different signaling events in the control of cell growth and stress responses. Under stress conditions, increased levels of ABA will inhibit cell elongation in the roots. In our previous work, we have shown that FER, through activation of the guanine nucleotide exchange factor 1 (GEF1)/4/10-Rho of Plant 11 (ROP11) pathway, enhances the activity of the phosphatase ABA Insensitive 2 (ABI2), a negative regulator of ABA signaling, thereby inhibiting ABA response...
September 13, 2016: Proceedings of the National Academy of Sciences of the United States of America
Mustafa Melih Bilgi, Rukiye Vardar, Esra Yıldırım, Baybars Veznedaroğlu, Serhat Bor
BACKGROUND: Limited data exist regarding the psychosocial aspects of gastroesophageal reflux disease (GERD). Some GERD subgroups, such as functional heartburn and hypersensitive esophagus, might show different psychiatric comorbidities than others. AIM: We aimed to evaluate the psychiatric comorbidities of GERD subgroups using a cross-sectional design. METHODS: A group of GERD patients at a tertiary outpatient clinic were evaluated via upper GIS (gastrointestinal system) endoscopy, esophageal manometry, and 24-h impedance-pH monitoring...
August 26, 2016: Digestive Diseases and Sciences
Sandra Nora González-Díaz, Alfredo Arias-Cruz, Dulce María Rivero-Arias, Alma Belén Partida-Ortega, Bárbara Elizondo-Villarreal, Jesús Arturo Ibarra-Chávez, Lissette Ramos-Valencia, Olga Patricia Monge-Ortega, Carlos Macouzet-Sánchez, María Rocío Salinas-Díaz
BACKGROUND: The presence of allergic mucin in allergic fungal sinusitis (AFS) is a manifestation that identifies it as a hypersensitivity process. AFS has a phenomenon of cross-reactivity to IgE-bound proteins having at least two shared epitopes. CLINICAL REPORT: A 13-year-old male with nasal obstructive symptoms of three years of evolution. An obstructive mass was identified in the sinuses through physical examination and CT. In endoscopic surgery, the left nostril polyp was identified with the macroscopic appearance of allergic mucin; the polyp was resected...
July 2016: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
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