4,176 results match your criteria decreased mast

Serglycin-Deficiency Causes Reduced Weight Gain and Changed Intestinal Cytokine Responses in Mice Infected With .

Front Immunol 2021 8;12:677722. Epub 2021 Jul 8.

Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden.

The proteoglycan serglycin (SG) is expressed by different innate and adaptive immune cells, mast cells, macrophages, neutrophils, and cytotoxic T lymphocytes, where SG contributes to correct granule storage and extracellular activity of inflammatory mediators. Here the serglycin-deficient (SG) mouse strain was used to investigate the impact of SG on intestinal immune responses during infection with the non-invasive protozoan parasite . Young (≈11 weeks old) oral gavage-infected congenic SG mice showed reduced weight gain as compared with the infected SG littermate mice and the PBS-challenged SG and SG littermate mice. Read More

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Lantana canescens (Kunth) inhibits inflammatory and hyperalgesic responses in murine models.

J Ethnopharmacol 2021 Jul 29;280:114461. Epub 2021 Jul 29.

Laboratory of Pharmacology and Inflammation, FACFAN/ Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil. Electronic address:

Ethnopharmacological Relevance: Lantana canescens is popularly known in Brazil as "cidreirinha" or "chumbinho-branco". It is found in Pantanal biome and its flowers and leaves are used in traditional medicine to treat pain and inflammation. Information about this species is limited to the activity of isolated essential oils. Read More

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Enhancement of Mast Cell Degranulation Mediated by Purinergic Receptors' Activation and PI3K Type δ.

J Immunol 2021 Jul 30. Epub 2021 Jul 30.

Drexel University College of Medicine, Philadelphia, PA.

Mast cells express multiple metabotropic purinergic P2Y receptor (P2YR) subtypes. Few studies have evaluated their role in human mast cell (HMC) allergic response as quantified by degranulation induced by cross-linking the high-affinity IgE receptor (FcεRI). We have previously shown that extracellular nucleotides modify the FcεRI activation-dependent degranulation in HMCs derived from human lungs, but the mechanism of this action has not been fully delineated. Read More

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Anti-allergic effects of Asarum heterotropoides on an ovalbumin-induced allergic rhinitis murine model.

Biomed Pharmacother 2021 Jul 22;141:111944. Epub 2021 Jul 22.

Herbal Medicine Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero Yuseong-gu, Daejeon 34054, South Korea. Electronic address:

Allergic rhinitis (AR) is a common chronic respiratory disease. Asarum heterotropoides (AH) is predicted to be a treatment for allergic diseases, but its therapeutic effect is unclear. We aimed to determine the anti-allergic effects of AH in mice with ovalbumin (OVA)-induced AR. Read More

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Sputum Gene Expression Reveals Dysregulation of Mast Cells and Basophils in Eosinophilic COPD.

Int J Chron Obstruct Pulmon Dis 2021 21;16:2165-2179. Epub 2021 Jul 21.

National Health and Medical Research Council Centre for Research Excellence in Severe Asthma, Newcastle, NSW, Australia.

Purpose: The clinical and inflammatory associations of mast cells (MCs) and basophils in chronic obstructive pulmonary disease (COPD) are poorly understood. We previously developed and validated a qPCR-based MC/basophil gene signature in asthma to measure these cells in sputum samples. Here, we measured this gene signature in a COPD and control population to explore the relationship of sputum MCs/basophils to inflammatory and COPD clinical characteristics. Read More

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Yiqi Jiemin decoction alleviates allergic rhinitis in a guinea pig model by suppressing inflammation, restoring Th1/Th2 balance, and improving cellular metabolism.

Aging (Albany NY) 2021 Jul 27;13(undefined). Epub 2021 Jul 27.

Department of Otorhinolaryngology, Dongzhimen Hospital, The First Affiliated Hospital of Beijing University of Chinese Medicine, Beijing 100000, China.

We investigated the mechanisms underlying the therapeutic effects of Yiqi Jiemin decoction (YJD), a traditional Chinese medicine (TCM), in the ovalbumin (OVA)-induced allergic rhinitis (AR) model in guinea pigs. YJD significantly decreased infiltration of mast cells and eosinophils into the nasal mucosa of AR model guinea pigs. YJD also increased expression of TGF-β in the nasal mucosa, restored the balance of Th1/Th2 immune cell responses, and decreased serum levels of various pro-inflammatory mediators, including histamine (HA), neuropeptide Y (NPY), acetylcholine (ACH), norepinephrine and immunoglobulin E (IgE). Read More

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Ultraviolet-A light reduces cellular cytokine release from human endotracheal cells infected with Coronavirus.

Photodiagnosis Photodyn Ther 2021 Jul 24:102457. Epub 2021 Jul 24.

Medically Associated Science and Technology (MAST) Program, Cedars-Sinai, Los Angeles, CA, USA; Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai, Los Angeles, CA, USA. Electronic address:

Background: An important clinical feature of coronavirus disease 2019 (COVID-19) is hypercytokinemia (cytokine storm). We previously showed that narrow band ultraviolet-A (NB-UVA) treatment salvages coronavirus (CoV)-229E-infected human tracheal cells, and that daily endotracheal NB-UVA therapy reduced severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) levels in human subjects, with improved clinical outcomes. Here, we examined NB-UVA effects on cytokine release during CoV-229E infection. Read More

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Effects of chloroform fraction of Fritillariae Thunbergii Bulbus on atopic symptoms in a DNCB-induced atopic dermatitis-like skin lesion model and in vitro models.

J Ethnopharmacol 2021 Jul 24:114453. Epub 2021 Jul 24.

Department of Anatomy, College of Korean Medicine, Kyung Hee University, 26, Kyunghee dae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea. Electronic address:

Ethnopharmacological Relevance: Fritillariae thunbergii Bulbus (FT), knowns as "Jeolpaemo ()" in Korean traditional medicine, is a perennial plant belonging to the Liliaceae family and has been used to treat symptoms such as cough, sputum formation, and purulent pneumonia. Owing to its effects of lowering heat, removing sputum, and reducing swelling, the plant has also been used as an external prescription medicine to treat inflammation.

Aim Of The Study: To analyze the anti-inflammatory effects of FT-ethanol extract (FT-Et) and FT-chloroform fraction extract (FT-Cl) on 1-chloro-2,4-dinitrobenzene (DNCB)-induced atopic dermatitis (AD) in vivo and in vitro. Read More

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Cera Flava Alleviates Atopic Dermatitis by Activating Skin Barrier Function via Immune Regulation.

Int J Mol Sci 2021 Jul 14;22(14). Epub 2021 Jul 14.

Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, 111 Geonjae-ro, Naju-si 58245, Korea.

Cera Flava (CF), a natural extract obtained from beehives, is widely used in dermatological products owing to its wound healing, wrinkle reduction, UV-protective, and skin cell turnover stimulation effects. However, its effect on AD-like skin lesions is unknown. In this study, we used a mouse model of AD to evaluate the effects of CP at the molecular and phenotypic levels. Read More

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Lycoperoside H, a steroidal alkaloid saponin in tomato seeds, ameliorates atopic dermatitis-like symptoms in IL-33 transgenic mice.

J Food Biochem 2021 Jul 23:e13877. Epub 2021 Jul 23.

Oryza Oil & Fat Chemical Co., Ltd, Ichinomiya, Japan.

Tomato seeds contain steroidal saponins called lycoperosides. However, it currently remains unclear whether lycoperosides exert anti-inflammatory or anti-allergic effects. Therefore, we herein investigated the effects of tomato seed extract (TSE) and lycoperoside H (LH) in Interleukin (IL)-33 transgenic mice. Read More

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Aminocellulose - grafted polycaprolactone-coated core-shell nanoparticles alleviate the severity of ulcerative colitis: a novel adjuvant therapeutic approach.

Biomater Sci 2021 Jul 21. Epub 2021 Jul 21.

Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector-81, Sahibzada Ajit Singh Nagar, Punjab Pin - 140306, India.

Ulcerative colitis (UC) is an idiopathic inflammatory condition of colorectal regions. Existing therapies for UC face grave lacunae including off-target and other harmful side effects, extensive first-pass metabolism, rapid clearance, limited or poor drug absorption and various other limitations, resulting in lower bioavailability. These conditions demand advanced delivery strategies to inflammatory colonic conditions so that drugs can counter stomach acid, avail protective strategies at this pH and selectively deliver drugs to the colon. Read More

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Inhibition of Chitinase-3-like-1 by K284-6111 Reduces Atopic Skin Inflammation via Repressing Lactoferrin.

Immune Netw 2021 Jun 29;21(3):e22. Epub 2021 Jun 29.

College of Pharmacy and Medical Research Center, Chungbuk National University, Cheongju, Korea.

Chitinase-3-like-1 (CHI3L1) is known to induce inflammation in the progression of allergic diseases. Previous our studies revealed that 2-({3-[2-(1-cyclohexen-1-yl)ethyl]-6,7-dimethoxy-4-oxo-3,4-dihydro-2-quinazolinyl}sulfanyl)-N-(4-ethylphenyl)butanamide (K284-6111; K284), the CHI3L1 inhibiting compound, has the anti-inflammatory effect on neuroinflammation. In this study, we investigated that K284 treatment could inhibit the development of atopic dermatitis (AD). Read More

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Neuro-Immune Modulation Effects of Sacral Nerve Stimulation for Visceral Hypersensitivity in Rats.

Front Neurosci 2021 2;15:645393. Epub 2021 Jul 2.

Division of Gastroenterology and Hepatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States.

Visceral hypersensitivity (VH) is one of the underlying pathophysiologies of irritable bowel syndrome. Mast cell overactivation has been found to be one of the main causes of VH. We investigated the effects and mechanisms of actions of sacral nerve stimulation (SNS) on visceral pain in a rodent model of VH. Read More

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Autologous Lipofilling Improves Clinical Outcome in Patients With Symptomatic Dermal Scars Through Induction of a Pro-Regenerative Immune Response.

Aesthet Surg J 2021 Jul 16. Epub 2021 Jul 16.

Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.

Background: Autologous lipofilling is emerging procedure to augment and possibly reverse dermal scars and to reduce scar-related pain, but its efficacy and mechanisms are poorly understood.

Objectives: To test the hypothesis that repeated lipografts reverse dermal scars by re-initiation of wound healing.

Methods: In a prospective, non-placebo controlled clinical study, 27 adult patients with symptomatic scars were given two lipofilling treatments at 3-month intervals. Read More

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Cytological analysis of tracheal wash and bronchoalveolar lavage fluid in health and respiratory disease in dromedary camels.

PeerJ 2021 2;9:e11723. Epub 2021 Jul 2.

Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia.

Background: Tracheal wash (TW) and bronchoalveolar lavage (BAL) have proven to be useful tools for the identification of disease-associated changes in the respiratory tract in human and different animal species. In the dromedary camel, little is known about cytological analysis of TW and BAL in health and disease. The aim of the present study was to evaluate the cytological composition of TW and BAL in health and respiratory disease in dromedary camels. Read More

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Tongxie Anchang Decoction Relieves Visceral Hypersensitivity in Diarrhea-Predominant Irritable Bowel Syndrome Rats by Regulating the NGF/TrkA Signaling Pathway.

Evid Based Complement Alternat Med 2021 18;2021:6679348. Epub 2021 Jun 18.

Department of Gastroenterology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, China.

Irritable bowel syndrome (IBS) is a functional gastrointestinal disease characterized by visceral hypersensitivity-related abdominal pain, in which diarrhea-predominant IBS (IBS-D) is the main subtype and has a high clinical incidence. Tongxie Anchang Decoction (TXACD) has been proved to significantly improve abdominal pain in patients with IBS-D, but its underlying therapeutic mechanism still remains unclear. In the present study, IBS-D model rats were induced by neonatal maternal separation (NMS) combined with restraint stress (RS). Read More

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Dexmedetomidine preconditioning mitigates myocardial ischemia/reperfusion injury via inhibition of mast cell degranulation.

Biomed Pharmacother 2021 Jul 6;141:111853. Epub 2021 Jul 6.

Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China. Electronic address:

The degranulation of cardiac mast cells is associated with occurrence and development of myocardial ischemia/reperfusion (I/R) injury. Dexmedetomidine has a cardioprotective effect from I/R injury. The purpose of this study was to investigate whether dexmedetomidine preconditioning induced cardioprotection is related to suppression of degranulation of cardiac mast cell. Read More

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Brain Acetyl-CoA Production and Phosphorylation of Cytoskeletal Proteins Are Targets of CYP46A1 Activity Modulation and Altered Sterol Flux.

Neurotherapeutics 2021 Jul 7. Epub 2021 Jul 7.

Department of Ophthalmology and Visual Sciences, Case Western Reserve University, Cleveland, OH, USA.

Cholesterol and 24-hydroxycholesterol are the most abundant brain sterols and represent the substrate and product, respectively, of cytochrome P450 46A1 (CYP46A1), a CNS-specific enzyme. CYP46A1 controls cholesterol elimination and turnover in the brain, the two processes that determine the rate of brain sterol flux through the plasma membranes and thereby the properties of these membranes. Brain sterol flux is decreased in Cyp46a1 mice compared to wild-type mice and increased in 5XFAD mice (a model of Alzheimer's disease) when they are treated with a small dose of efavirenz, a CYP46A1 activator. Read More

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The suppressive effect of tamarixetin, isolated from , on degranulation and eicosanoid production in bone marrow-derived mast cells.

Allergol Immunopathol (Madr) 2021 1;49(4):195-201. Epub 2021 Jul 1.

Division of Korean Medicine Development, National Development Institute of Korean Medicine, Gyeongsan, Republic of Korea;

Background: The study aimed to evaluate the inhibitory effect of tamarixetin on the production of inflammatory mediators in immunoglobulin E /antigen-induced mouse bone marrow-derived mast cells (BMMCs).

Material And Methods: Tamarixetin isolated from was infected into BMMCs. The inhibitory effect of tamarixetin were analyzed by quantifying β-hexosaminidase, eicosanoid generation, intracellular calcium measurement, and Western blot analysis. Read More

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Hidrox and Chronic Cystitis: Biochemical Evaluation of Inflammation, Oxidative Stress, and Pain.

Antioxidants (Basel) 2021 Jun 29;10(7). Epub 2021 Jun 29.

Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy.

Interstitial cystitis/painful bladder syndrome (IC/PBS) is a chronic bladder condition characterized by frequent urination, inflammation, oxidative stress, and pain. The aim of the study was to evaluate the anti-inflammatory and antioxidant effects of an oral administration of Hidrox (10 mg/kg) in the bladder and spinal cord in a rodent model of IC/BPS. The chronic animal model of cystitis was induced by repeated intraperitoneal injections of cyclophosphamide (CYP) for five consecutive days. Read More

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Forsythiasides-Rich Extract From Forsythiae Fructus Inhibits Mast Cell Degranulation by Enhancing Mitochondrial Ca Uptake.

Front Pharmacol 2021 14;12:696729. Epub 2021 Jun 14.

Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.

Mast cells (MCs) activated via IgE/FcεRI or MAS-related G protein coupled receptor (Mrgpr)-mediated pathway can release granules that play prominent roles in hypersensitivity reactions. Forsythiae Fructus, a well-known traditional Chinese medicine, has been clinically used for allergic diseases. Although previous studies indicated that Forsythiae Fructus extract inhibited compound 48/80-induced histamine release from MCs, its effect on IgE-dependent MC degranulation and possible underlying mechanisms remain to be explored. Read More

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Optimizing drug inhibition of IgE-mediated anaphylaxis in mice.

J Allergy Clin Immunol 2021 Jun 26. Epub 2021 Jun 26.

Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio. Electronic address:

Background: Administering allergens in increasing doses can temporarily suppress IgE-mediated allergy and anaphylaxis by desensitizing mast cells and basophils; however, allergen administration during desensitization therapy can itself induce allergic responses. Several small molecule drugs and nutraceuticals have been used clinically and experimentally to suppress these allergic responses.

Objectives: This study sought to optimize drug inhibition of IgE-mediated anaphylaxis. Read More

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The Immune Atlas of Human Deciduas With Unexplained Recurrent Pregnancy Loss.

Front Immunol 2021 7;12:689019. Epub 2021 Jun 7.

Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Institute of Translational Medicine, First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China.

Recurrent pregnancy loss (RPL) is a common fertility problem that affects 1%-2% of couples all over the world. Despite exciting discoveries regarding the important roles of the decidual natural killer cell (dNK) and regulatory T cell in pregnancy, the immune heterogeneity in patients with unexplained recurrent pregnancy loss (URPL) remains elusive. Here, we profiled the transcriptomes of 13,953 CD45 cells from three normal and three URPL deciduas. Read More

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Mast Cells Regulate Ductular Reaction and Intestinal Inflammation in Cholestasis via Farnesoid X Receptor Signaling.

Hepatology 2021 Jun 23. Epub 2021 Jun 23.

Richard L. Roudebush VA Medical Center, Indiana University School of Medicine, Indianapolis, IN, USA.

Background & Aim: Cholestasis is characterized by increased total bile acid (TBA) levels, which are regulated by farnesoid X receptor (FXR)/fibroblast growth factor 15 (FGF15). Primary sclerosing cholangitis (PSC) patients typically present with inflammatory bowel disease (IBD). Mast cells (MCs) (i) express FXR and (ii) infiltrate the liver during cholestasis promoting liver fibrosis. Read More

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The role of Sp140 revealed in IgE and mast cell responses in Collaborative Cross mice.

JCI Insight 2021 Jun 22;6(12). Epub 2021 Jun 22.

Department of Pathology, Stanford University School of Medicine, Stanford, California, USA.

Mouse IgE and mast cell (MC) functions have been studied primarily using inbred strains. Here, we (a) identified effects of genetic background on mouse IgE and MC phenotypes, (b) defined the suitability of various strains for studying IgE and MC functions, and (c) began to study potentially novel genes involved in such functions. We screened 47 Collaborative Cross (CC) strains, as well as C57BL/6J and BALB/cJ mice, for strength of passive cutaneous anaphylaxis (PCA) and responses to the intestinal parasite Strongyloides venezuelensis (S. Read More

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Chloroquine attenuates thymic stromal lymphopoietin production via suppressing caspase-1 signaling in mast cells.

Biomed Pharmacother 2021 Jun 17;141:111835. Epub 2021 Jun 17.

Department of Anatomy & Information Sciences, College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea. Electronic address:

Thymic stromal lymphopoietin (TSLP) produced by mast cells is involved in allergic inflammation pathogenesis. Chloroquine (CQ) is known to be an anti-malarial drug; however, additional protective functions of CQ have been discovered. This study aims to clarify an anti-inflammatory effect of CQ through modulating TSLP levels using an in vitro model of phorbol myristate acetate (PMA) + A23187-activated human mast cell line (HMC-1) and an in vivo model of PMA-irritated ear edema. Read More

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Mepolizumab targets multiple immune cells in aspirin-exacerbated respiratory disease.

J Allergy Clin Immunol 2021 Jun 16. Epub 2021 Jun 16.

Department of Medicine, Harvard Medical School, the Division of Allergy and Clinical Immunology, Brigham and Women's Hospital, Boston, Mass. Electronic address:

Background: Eosinophilic asthma and nasal polyposis are hallmarks of aspirin-exacerbated respiratory disease (AERD), and IL-5 inhibition has been shown to provide therapeutic benefit. However, IL-5Rα is expressed on many cells in addition to eosinophils, and the mechanisms by which IL-5 inhibition leads to clinical benefit in eosinophilic asthma and nasal polyposis are unlikely to be due exclusively to antieosinophil effects.

Objective: We sought to identify the mechanisms by which anti-IL-5 treatment with mepolizumab improves respiratory inflammation in AERD. Read More

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Mdivi-1 alleviates atopic dermatitis through the inhibition of NLRP3 inflammasome.

Exp Dermatol 2021 Jun 16. Epub 2021 Jun 16.

Department of Dermatology, Shengjing Hospital of China Medical University, Shenyang, China.

Atopic dermatitis (AD) is a chronic inflammatory cutaneous disorder with few treatment options. Dynamin-related protein 1 (Drp1)-dependent mitochondrial fission contributes to the activation of NLRP3 inflammasome, and inhibiting Drp1 has been become an attractive therapeutic strategy for inflammatory diseases. This study aimed to investigate the effects of Drp1 inhibitor mdivi-1 on experimental AD. Read More

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Anti-asthmatic effects of tannic acid from Chinese natural gall nuts in a mouse model of allergic asthma.

Int Immunopharmacol 2021 Jun 11;98:107847. Epub 2021 Jun 11.

Department of Biochemistry, ICMR-National Institute for Research in Environmental Health, Bhopal, Madhya Pradesh, India. Electronic address:

Asthma is a chronic inflammatory disease of the airways, which is characterized by infiltration of inflammatory cells, airway hyperresponsiveness (AHR), and airway remodeling. This study aimed to explore the role and mechanism of tannic acid (TA), a naturally occurring plant-derived polyphenol, in murine asthma model. BALB/c mice were given ovalbumin (OVA) to establish an allergic asthma model. Read More

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Antimicrobial resistance and molecular epidemiological typing of Neisseria gonorrhoeae isolates from Kyrgyzstan in Central Asia, 2012 and 2017.

BMC Infect Dis 2021 Jun 12;21(1):559. Epub 2021 Jun 12.

WHO Collaborating Centre for Gonorrhoea and Other STIs, National Reference Laboratory for STIs, Department of Laboratory Medicine, Clinical Microbiology, Faculty of Medicine and Health, Örebro University Hospital, SE-701 85, Örebro, Sweden.

Background: Gonorrhoea and antimicrobial resistance (AMR) in Neisseria gonorrhoeae are significant public health concerns globally. Nearly no gonococcal AMR data are available from Central Asia, and no data from Kyrgyzstan has been published. We examined, for the first time, AMR and molecular epidemiology of N. Read More

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