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https://www.readbyqxmd.com/read/29782983/an-in-vivo-biocompatibility-study-of-surgical-meshes-made-from-bacterial-cellulose-modified-with-chitosan
#1
Joanna Piasecka-Zelga, Piotr Zelga, Joanna Szulc, Justyna Wietecha, Danuta Ciechańska
Bacterial cellulose modified with chitosan (MBC) is an innovative biomaterial used in regenerative medicine which may potentially improve treatment outcomes mesh for hernia repair surgery by facilitating better absorption in native tissue with less risk of mesh-related infections. The aim of the present study was to evaluate the biocompatibility of mesh based on MBC, and determine whether immunological reactions occur due to hypersensitivity to the implants. Forty five Imp:WIST rats were randomly assigned to be implanted with one of three mesh types: simple polypropylene mesh (n = 15), mesh modified by bacterial cellulose only (n = 15) and MBC mesh (n = 15) and evaluated after one and three months following intramuscular implantation...
May 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29782330/a-transgenic-mouse-model-for-hla-b-57-01-linked-abacavir-drug-tolerance-and-reactivity
#2
Marco Cardone, Karla Garcia, Mulualem E Tilahun, Lisa F Boyd, Sintayehu Gebreyohannes, Masahide Yano, Gregory Roderiquez, Adovi D Akue, Leslie Juengst, Elliot Mattson, Suryatheja Ananthula, Kannan Natarajan, Montserrat Puig, David H Margulies, Michael A Norcross
Adverse drug reactions (ADRs) are a major obstacle to drug development, and some of these, including hypersensitivity reactions to the HIV reverse transcriptase inhibitor abacavir (ABC), are associated with HLA alleles, particularly HLA-B*57:01. However, not all HLA-B*57:01+ patients develop ADRs, suggesting that in addition to the HLA genetic risk, other factors may influence the outcome of the response to the drug. To study HLA-linked ADRs in vivo, we generated HLA-B*57:01-Tg mice and show that, although ABC activated Tg mouse CD8+ T cells in vitro in a HLA-B*57:01-dependent manner, the drug was tolerated in vivo...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29782303/clindamycin-induced-maculopapular-exanthema-with-preferential-involvement-of-striae-distensae-a-koebner-phenomenon
#3
Benigno Monteagudo, Miguel Cabanillas, Pilar Iriarte, Aquilina Ramírez-Santos, Elvira León-Muinos, Daniel González-Vilas, Óscar Suárez-Amor
Clindamycin is a lincomycin-derived antibiotic useful for the treatment of anaerobic and Gram-positive aerobic bacterial infections. Cutaneous adverse reactions are usually maculopapular exanthemas, although hypersensitivity syndrome, acute generalized exanthematous pustulosis, and Stevens-Johnson syndrome have also been reported (1). We report the case of a patient with a maculopapular rash triggered by clindamycin who developed cutaneous lesions on striae distensae (SD). A 47-year-old woman was referred to our clinic for pruritic cutaneous lesions which had started 6 days earlier...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782298/orthopedic-and-cutaneous-reactions-to-nickel-after-total-hip-replacement
#4
Domagoj Delimar, Ivan Bohaček, Zrinjka Paštar, Jasna Lipozenčić
Implant degradation products have shown signs of a cutaneous allergic response after implantation of a metal orthopedic replacement, loosening and failure of the joints as well as skin rashes, general fatigue, pain, and impaired wounds and bone healing. The prevalence of contact skin sensitivity in patients with a joint replacement device is higher than that in the general population. This delayed hypersensitivity to metallic orthopedic implants is more clearly defined and is a contributing factor to implant failure...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781810/active-suppression-rather-than-ignorance-tolerance-to-abacavir-induced-hla-b-57-01-peptide-repertoire-alteration
#5
Elizabeth J Phillips, Simon A Mallal
The discovery of HLA-B*57:01-associated abacavir hypersensitivity is a translational success story that eliminated adverse reactions to abacavir through pretreatment screening and defined a mechanistic model of an altered peptide repertoire. In this issue of the JCI, Cardone et al. have developed an HLA-B*57:01-transgenic mouse model and demonstrated that CD4+ T cells play a key role in mediating tolerance to the dramatically altered endogenous peptide repertoire induced by abacavir and postulate a known mechanism by which CD4+ T cells suppress DC maturation...
May 21, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29780732/effect-of-fixed-metallic-oral-appliances-on-oral-health
#6
REVIEW
Ahmad Alnazzawi
There is a substantial proportion of the population using fixed metallic oral appliances, such as crowns and bridges, which are composed of various dental alloys. These restorations may be associated with a number of effects on oral health with variable degrees of severity, to review potential effects of using fixed metallic oral appliances, fabricated from various alloys. The MEDLINE/PubMed database was searched using certain combinations of keywords related to the topic. The search revealed that burning mouth syndrome, oral pigmentation, hypersensitivity and lichenoid reactions, and genotoxic and cytotoxic effects are the major potential oral health changes associated with fixed prosthodontic appliances...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780064/systemic-lupus-erythematosus-and-sj%C3%A3-gren-s-syndrome-complicated-by-conversion-disorder-a-case-report
#7
Misa Nakamura, Seiji Tanaka, Tadashi Inoue, Yasuto Maeda, Kiyohito Okumiya, Takuya Esaki, G O Shimomura, Kenji Masunaga, Shinichiro Nagamitsu, Yushiro Yamashita
Conversion disorder (CD) is sometimes accompanied by motor and sensory impairments, such as muscle weakness, paralysis, sensory hypersensitivity, and sensory loss. Sjögren's syndrome (SS) complicates 5-10% of cases of systemic lupus erythematosus (SLE). Patients with SS or SLE present with various neurological symptoms and psychiatric manifestations. When neurological symptoms are present, it is important to distinguish whether the symptoms are caused by a neurological or a mental disorder because the former requires early intensive intervention, such as methylprednisolone pulse therapy (MPT), whereas psychotherapy or antidepressant drugs are recommended for mental disorders...
May 21, 2018: Kurume Medical Journal
https://www.readbyqxmd.com/read/29778965/metal-hypersensitivity-in-the-context-of-connective-tissue-disease-an-opportunity-for-practice-prevention
#8
Jack Ρ Guccione, Sharon E Jacob
Metal hypersensitivity reactions (MHR) are not associated with metal containing orthodontic implants unless there is a positive history of dermatitis from a high nickel-release item (piercing post, earring, watch). We wish to present this letter to highlight evidence surrounding orthodontic-related nickel hypersensitivity and to bring to the readers attention current American Contact Dermatitis Society (ACDS) guidelines that endorse the importance of addressing metal hypersensitivity reactions in the setting of implantable dental devices...
May 17, 2018: Environmental Research
https://www.readbyqxmd.com/read/29773475/concordance-between-aspergillus-specific-precipitating-antibody-and-igg-in-allergic-bronchopulmonary-aspergillosis
#9
Kazuki Harada, Tsuyoshi Oguma, Akemi Saito, Yuma Fukutomi, Jun Tanaka, Katsuyoshi Tomomatsu, Masami Taniguchi, Koichiro Asano
BACKGROUND: Several serological tests for specific precipitin or IgG are available to demonstrate type III hypersensitivity reactions to Aspergillus species and are essential for infectious fungal disease diagnosis. These assays are also important for allergic bronchopulmonary aspergillosis (ABPA) diagnosis; however, their concordance in ABPA was not well studied. METHODS: Fifty-two ABPA patients diagnosed based on ISHAM criteria were enrolled. Precipitins and IgG specific to Aspergillusfumigatus, Aspergillusniger, Aspergillusflavus, or Aspergillusterreus were measured using Ouchterlony double immunodiffusion tests and ImmunoCAP method, respectively...
May 15, 2018: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29772494/effects-of-ceftriaxone-induced-intestinal-dysbacteriosis-on-regulatory-t-cells-validated-by-anaphylactic-mice
#10
Xia Luo, Zengfeng Pan, Shuang Luo, Qi Liu, Shaowei Huang, Guanghua Yang, Feifei Nong, Yajun Fu, Xiangliang Deng, Lian Zhou
Both probiotics and pathogens in the human gut express pathogen-associated molecular patterns (PAMPs) and die with the release of endotoxin and bacterial DNA, which can stimulate our immune system and cause immune reaction. However, it's interesting and fascinating to address why the normal intestinal flora will not generate immunological rejection like the pathogen does. By investigating the changes in cells and molecules relevant to immune tolerance in mice with ceftriaxone-induced dysbacteriosis, our study discovered that both the Evenness indexes and Shannon Wiener index of intestinal flora showed a decrease in dysbacteriosis mice...
May 14, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29768492/association-between-periprosthetic-tissue-metal-content-whole-blood-and-synovial-fluid-metal-ion-levels-and-histopathological-findings-in-patients-with-failed-metal-on-metal-hip-replacement
#11
Lari Lehtovirta, Aleksi Reito, Jyrki Parkkinen, Sirpa Peräniemi, Jouko Vepsäläinen, Antti Eskelinen
Adverse Reaction to Metal Debris (ARMD) is a major cause of implant failure leading to revision surgery in patients with metal-on-metal (MoM) hip arthroplasties. However, the pathogenesis and its association to implant wear are poorly understood and previous studies have yielded discrepant results. We sought to investigate the associations between histological findings, whole blood and synovial fluid metal ion concentrations and periprosthetic tissue metal concentrations in patients with MoM total hip replacements and hip resurfacings revised for ARMD...
2018: PloS One
https://www.readbyqxmd.com/read/29766368/systemic-contact-dermatitis
#12
REVIEW
Marcella Aquino, Greg Rosner
Systemic contact dermatitis (SCD) traditionally refers to a skin condition where an individual who is cutaneously sensitized to an allergen will subsequently react to that same allergen or a cross reacting allergen via a different route. It occurs to allergens including metals, medications, and foods. The exact pathophysiology underlying this disease remains unknown, although it appears to be mediated by type 4 hypersensitivity reactions and possibly type 3 hypersensitivity reactions. The p-I concept (pharmacologic interaction with immunoreceptors) hypothesized that drugs are able to bind directly to a T cell receptor without first being presented by MHC (major histocompatibility complex) molecules and without prior metabolism, which would help explain why SCD can be seen on first exposure to medications...
May 15, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29765441/suspected-unexpected-and-other-adverse-reactions-to-antiretroviral-drugs-used-as-post-exposure-prophylaxis-of-hiv-infection-five-year-experience-from-clinical-practice
#13
Justyna D Kowalska, Ewa Pietraszkiewicz, Ewa Firląg-Burkacka, Andrzej Horban
Introduction: With increased use of antiretroviral drugs (ARVs) in HIV uninfected persons, proper reporting on suspected unexpected serious adverse reactions (SUSARs) and continued insight into adverse drug reactions (ADRs) are needed for adequate information on safety of ARVs in such populations. Material and methods: Medical documentation of persons receiving ARVs after non-occupational HIV exposure (non-occupational post-exposure prophylaxis - nPEP) during 5 successive years (2009-2013) was evaluated by two HIV physicians...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765217/allergy-to-chlorpromazine-and-valproic-acid-following-carbamazepine-hypersensitivity-in-a-patient-with-an-hla-b-4601-allele
#14
Kumi Sakurada, Takeshi Kozaru, Kazuo Yamada, Masashi Nibuya, Kiyoshi Nagata, Eiji Suzuki
A 73-year-old man, exhibiting psychomotor excitement after traumatic brain injury, developed allergic cutaneous eruptions and hepatic inflammation that did not resolve after the cessation of carbamazepine (CBZ). Fusing maculopapular erythema was observed in the face, neck, presternal region, and bilaterally in the forearms and feet. A drug-induced lymphocyte stimulation test revealed hypersensitivity to chlorpromazine (CPZ) and valproic acid (VPA), as well as to CBZ. The allergic reaction with eosinophilia to CPZ and VPA was suspected to have emerged following CBZ hypersensitivity, since previous treatment with CPZ and VPA prior to the introduction of CBZ had not been associated with adverse reactions earlier in the course of treatment...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29762034/ionic-liquid-based-paclitaxel-preparation-a-new-potential-formulation-for-cancer-treatment
#15
Chowdhury Md Raihan, Rahman Md Moshikur, Rie Wakabayashi, Yoshiro Tahara, Noriho Kamiya, Muhammad Moniruzzaman, Masahiro Goto
Paclitaxel (PTX) injection (i.e. Taxol) has been used as an effective chemotherapeutic treatment for various cancers. However, the current Taxol formulation contains Cremophor EL, which causes hypersensitivity reactions during intravenous administration and precipitation by aqueous dilution. This article reports the preliminary results on the ionic liquid (IL)-based PTX formulations developed to address the aforementioned issues. The formulations were composed of PTX/cholinium amino acid ILs/ethanol/tween-80/water...
May 15, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29761928/systematic-review-of-hypersensitivity-to-parenteral-nutrition
#16
REVIEW
Vikram J Christian, Matthew Tallar, Cassandra L S Walia, Rita Sieracki, Praveen S Goday
Hypersensitivity to the components of parenteral nutrition (PN) is a rare but important complication of PN. We performed a systematic review of hypersensitivity to PN to enable us to build an approach to the individual patient who presents with PN hypersensitivity. A systematic literature search was performed in Ovid Medline, CINAHL, Scopus, and Web of Science using terms for "hypersensitivity" AND "parenteral nutrition" and relevant synonyms. A total of 28 articles were analyzed, and 33 hypersensitivities to PN or components of PN were reported in these 28 articles...
May 15, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29761728/safety-assessment-of-hydrolyzed-wheat-protein-and-hydrolyzed-wheat-gluten-as-used-in-cosmetics
#17
Christina Burnett, Wilma F Bergfeld, Donald V Belsito, Ronald A Hill, Curtis D Klaassen, Daniel C Liebler, James G Marks, Ronald C Shank, Thomas J Slaga, Paul W Snyder, F Alan Andersen, Bart Heldreth
The Cosmetic Ingredient Review (CIR) Expert Panel (Panel) reviewed the product use, formulation, and safety data on hydrolyzed wheat protein and hydrolyzed wheat gluten, which function as skin- and hair-conditioning agents. The Panel determined that data from clinical and laboratory studies were sufficient to demonstrate that these ingredients will not elicit type 1 immediate hypersensitivity reactions in sensitized individuals and will not induce sensitization when the polypeptide lengths of the hydrolysates do not exceed 30 amino acids...
May 2018: International Journal of Toxicology
https://www.readbyqxmd.com/read/29760877/an-eaaci-task-force-report-recognising-the-potential-of-the-primary-care-physician-in-the-diagnosis-and-management-of-drug-hypersensitivity
#18
REVIEW
I Doña, J C Caubet, K Brockow, M Doyle, E Moreno, I Terreehorst, M J Torres
Adverse drug reactions include drug hypersensitivity reactions (DHRs), which can be immunologically mediated (allergy) or non-immunologically mediated. The high number of DHRs that are unconfirmed and often self-reported is a frequent problem in daily clinical practice, with considerable impact on future prescription choices and patient health. It is important to distinguish between hypersensitivity and non-hypersensitivity reactions by adopting a structured diagnostic approach to confirm or discard the suspected drug, not only to avoid life-threatening reactions, but also to reduce the frequent over-diagnosis of DHRs...
2018: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/29757876/a-randomized-trial-of-prophylactic-extended-carboplatin-infusion-to-reduce-hypersensitivity-reactions-in-recurrent-ovarian-cancer
#19
Katherine LaVigne, David M Hyman, Qin C Zhou, Alexia Iasonos, William P Tew, Carol Aghajanian, Vicky Makker, Martee L Hensley, Jason Konner, Rachel N Grisham, Nicholas Cangemi, Krysten Soldan, David R Spriggs, Paul J Sabbatini, Roisin E OʼCearbhaill
OBJECTIVE: Hypersensitivity with repeated exposure to platinum agents is common and can preclude continued treatment, even in patients with disease that remains platinum sensitive. We sought to compare the effects of prophylactic, extended carboplatin infusion versus standard infusion on the rate of carboplatin hypersensitivity reactions (HSRs) in women with recurrent ovarian cancer. METHODS: This was a single-institution, randomized, nonblinded trial comparing a graded, 3-hour extended infusion of carboplatin with a standard 30-minute infusion in patients with recurrent ovarian cancer who were enrolled from January 2011 to April 2015...
May 4, 2018: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29755712/lymphoproliferative-syndromes-associated-with-human-herpesvirus-6a-and-human-herpesvirus-6b
#20
REVIEW
Eva Eliassen, Gerhard Krueger, Mario Luppi, Dharam Ablashi
Human herpesvirus 6A and 6B (HHV-6A and HHV-6B) have been noted since their discovery for their T-lymphotropism. Although it has proven difficult to determine the extent to which HHV-6A and HHV-6B are involved in the pathogenesis of many diseases, evidence suggests that primary infection and reactivation of both viruses may induce or contribute to the progression of several lymphoproliferative disorders, ranging from benign to malignant and including infectious mononucleosis-like illness, drug induced hypersensitivity syndrome/drug reaction with eosinophilia and systemic symptoms (DIHS/DRESS), and nodular sclerosis Hodgkin's lymphoma...
2018: Mediterranean Journal of Hematology and Infectious Diseases
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