LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 20

Search options

  1. Article ; Online: Reply.

    Guntur, Vamsi P / Moore, Camille M / Manka, Laurie A

    The Journal of allergy and clinical immunology

    2023  Volume 151, Issue 5, Page(s) 1411

    Language English
    Publishing date 2023-03-03
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2023.01.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article: Long COVID: Where Are We in 2023?

    Regunath, Hariharan / Goldstein, Nir M / Guntur, Vamsi P

    Missouri medicine

    2023  Volume 120, Issue 2, Page(s) 102–105

    MeSH term(s) Humans ; Post-Acute COVID-19 Syndrome ; COVID-19
    Language English
    Publishing date 2023-04-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 427362-x
    ISSN 0026-6620
    ISSN 0026-6620
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Sex and gender in asthma.

    Chowdhury, Nowrin U / Guntur, Vamsi P / Newcomb, Dawn C / Wechsler, Michael E

    European respiratory review : an official journal of the European Respiratory Society

    2021  Volume 30, Issue 162

    Abstract: Asthma is a heterogenous disease, and its prevalence and severity are different in ... ...

    Abstract Asthma is a heterogenous disease, and its prevalence and severity are different in males
    MeSH term(s) Adult ; Asthma/diagnosis ; Asthma/drug therapy ; Asthma/epidemiology ; COVID-19 ; Child ; Female ; Gonadal Steroid Hormones ; Humans ; Male ; Pregnancy ; Prevalence ; SARS-CoV-2 ; Sex Factors
    Chemical Substances Gonadal Steroid Hormones
    Language English
    Publishing date 2021-11-17
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1077620-5
    ISSN 1600-0617 ; 0905-9180
    ISSN (online) 1600-0617
    ISSN 0905-9180
    DOI 10.1183/16000617.0067-2021
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Safety and efficacy of electronic cigarettes: a review.

    Peralta, A Rolando / Guntur, Vamsi P

    Missouri medicine

    2014  Volume 111, Issue 3, Page(s) 238–244

    Abstract: Tobacco smoking remains the highest cause of preventable deaths worldwide. Electronic cigarettes have recently become popular as nicotine alternatives. With public use on the rise and recent tobacco industry interest, field experts and regulatory ... ...

    Abstract Tobacco smoking remains the highest cause of preventable deaths worldwide. Electronic cigarettes have recently become popular as nicotine alternatives. With public use on the rise and recent tobacco industry interest, field experts and regulatory agencies voiced concerns about their safety and unregulated production. Electronic cigarettes are safer than conventional cigarettes and at least as safe as other approved nicotine replacement therapies. Further evidence is needed as their popularity increases amidst controversy over safety and efficacy.
    MeSH term(s) Equipment and Supplies ; Humans ; Nicotine/administration & dosage ; Nicotine/adverse effects ; Nicotinic Agonists/administration & dosage ; Nicotinic Agonists/adverse effects ; Perception ; Smoking/adverse effects ; Smoking/epidemiology ; Smoking Cessation/methods
    Chemical Substances Nicotinic Agonists ; Nicotine (6M3C89ZY6R)
    Language English
    Publishing date 2014-07-10
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 427362-x
    ISSN 0026-6620
    ISSN 0026-6620
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Efficacy and safety of reslizumab in the treatment of eosinophilic granulomatosis with polyangiitis.

    Manka, Laurie A / Guntur, Vamsi P / Denson, Joshua L / Dunn, Ryan M / Dollin, Yeshai T / Strand, Matthew J / Wechsler, Michael E

    Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology

    2021  Volume 126, Issue 6, Page(s) 696–701.e1

    Abstract: ... corticosteroid (P < .05). Of the 10 subjects, 3 experienced an EGPA exacerbation during the treatment. One had ...

    Abstract Background: Eosinophilic granulomatosis with polyangiitis (EGPA), a rare vasculitis with substantial morbidity, is characterized by asthma, eosinophilia, sinusitis, pulmonary infiltrates, neuropathy, positivity for antineutrophil cytoplasmic antibody, and multiorgan vasculitis. Although treatment options previously included corticosteroids and immunosuppressants, anti-interleukin 5 therapies have gained interest in EGPA treatment. Mepolizumab was approved for and recently benralizumab was found to have safety and efficacy in EGPA.
    Objective: To determine the safety and efficacy of reslizumab in EGPA.
    Methods: In this open-label, pilot study, we evaluated the safety and efficacy of intravenous reslizumab (3 mg/kg) in EGPA in 10 subjects. Oral corticosteroid dose, adverse events, exacerbations, symptom control, disease activity, blood markers, and lung function were evaluated before, during, and after 7 monthly reslizumab treatments.
    Results: Reslizumab was tolerated and resulted in a significant reduction in daily oral corticosteroid (P < .05). Of the 10 subjects, 3 experienced an EGPA exacerbation during the treatment. One had a severe adverse event, requiring removal from the study.
    Conclusion: Yielding similar results to other anti-interleukin 5 biologic medications, reslizumab is generally a safe and effective treatment for EGPA that warrants further study.
    Trial registration: ClinicalTrials.gov Identifier: NCT02947945.
    MeSH term(s) Adrenal Cortex Hormones/therapeutic use ; Adult ; Anti-Asthmatic Agents/adverse effects ; Anti-Asthmatic Agents/therapeutic use ; Antibodies, Monoclonal, Humanized/adverse effects ; Antibodies, Monoclonal, Humanized/therapeutic use ; Eosinophilia/drug therapy ; Female ; Granulomatosis with Polyangiitis/drug therapy ; Humans ; Interleukin-5/antagonists & inhibitors ; Male ; Middle Aged ; Prednisone/therapeutic use ; Treatment Outcome
    Chemical Substances Adrenal Cortex Hormones ; Anti-Asthmatic Agents ; Antibodies, Monoclonal, Humanized ; IL5 protein, human ; Interleukin-5 ; reslizumab (35A26E427H) ; Prednisone (VB0R961HZT)
    Language English
    Publishing date 2021-02-04
    Publishing country United States
    Document type Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1228189-x
    ISSN 1534-4436 ; 0003-4738 ; 1081-1206
    ISSN (online) 1534-4436
    ISSN 0003-4738 ; 1081-1206
    DOI 10.1016/j.anai.2021.01.035
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Signatures of Mitochondrial Dysfunction and Impaired Fatty Acid Metabolism in Plasma of Patients with Post-Acute Sequelae of COVID-19 (PASC).

    Guntur, Vamsi P / Nemkov, Travis / de Boer, Esther / Mohning, Michael P / Baraghoshi, David / Cendali, Francesca I / San-Millán, Inigo / Petrache, Irina / D'Alessandro, Angelo

    Metabolites

    2022  Volume 12, Issue 11

    Abstract: Exercise intolerance is a major manifestation of post-acute sequelae of severe acute respiratory syndrome coronavirus infection (PASC, or "long-COVID"). Exercise intolerance in PASC is associated with higher arterial blood lactate accumulation and lower ... ...

    Abstract Exercise intolerance is a major manifestation of post-acute sequelae of severe acute respiratory syndrome coronavirus infection (PASC, or "long-COVID"). Exercise intolerance in PASC is associated with higher arterial blood lactate accumulation and lower fatty acid oxidation rates during graded exercise tests to volitional exertion, suggesting altered metabolism and mitochondrial dysfunction. It remains unclear whether the profound disturbances in metabolism that have been identified in plasma from patients suffering from acute coronavirus disease 2019 (COVID-19) are also present in PASC. To bridge this gap, individuals with a history of previous acute COVID-19 infection that did not require hospitalization were enrolled at National Jewish Health (Denver, CO, USA) and were grouped into those that developed PASC (n = 29) and those that fully recovered (n = 16). Plasma samples from the two groups were analyzed via mass spectrometry-based untargeted metabolomics and compared against plasma metabolic profiles of healthy control individuals (n = 30). Observational demographic and clinical data were retrospectively abstracted from the medical record. Compared to plasma of healthy controls or individuals who recovered from COVID-19, PASC plasma exhibited significantly higher free- and carnitine-conjugated mono-, poly-, and highly unsaturated fatty acids, accompanied by markedly lower levels of mono-, di- and tricarboxylates (pyruvate, lactate, citrate, succinate, and malate), polyamines (spermine) and taurine. Plasma from individuals who fully recovered from COVID-19 exhibited an intermediary metabolic phenotype, with milder disturbances in fatty acid metabolism and higher levels of spermine and taurine. Of note, depletion of tryptophan-a hallmark of disease severity in COVID-19-is not normalized in PASC patients, despite normalization of kynurenine levels-a tryptophan metabolite that predicts mortality in hospitalized COVID-19 patients. In conclusion, PASC plasma metabolites are indicative of altered fatty acid metabolism and dysfunctional mitochondria-dependent lipid catabolism. These metabolic profiles obtained at rest are consistent with previously reported mitochondrial dysfunction during exercise, and may pave the way for therapeutic intervention focused on restoring mitochondrial fat-burning capacity.
    Language English
    Publishing date 2022-10-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662251-8
    ISSN 2218-1989
    ISSN 2218-1989
    DOI 10.3390/metabo12111026
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Characteristics and outcomes of ambulatory patients with suspected COVID-19 at a respiratory referral center.

    Guntur, Vamsi P / Modena, Brian D / Manka, Laurie A / Eddy, Jared J / Liao, Shu-Yi / Goldstein, Nir M / Zelarney, Pearlanne / Horn, Carrie A / Keith, Rebecca C / Make, Barry J / Petrache, Irina / Wechsler, Michael E

    Respiratory medicine

    2022  Volume 197, Page(s) 106832

    Abstract: Rationale: SARS-CoV-2 continues to cause a global pandemic and management of COVID-19 in outpatient settings remains challenging.: Objective: We sought to describe characteristics of patients with chronic respiratory disease (CRD) experiencing ... ...

    Abstract Rationale: SARS-CoV-2 continues to cause a global pandemic and management of COVID-19 in outpatient settings remains challenging.
    Objective: We sought to describe characteristics of patients with chronic respiratory disease (CRD) experiencing symptoms consistent with COVID-19, who were seen in a novel Acute Respiratory Clinic, prior to widely available testing, emergence of variants, COVID-19 vaccination, and post-vaccination (breakthrough) SARS-CoV-2 infections.
    Methods: Retrospective electronic medical record data were analyzed from 907 adults with presumed COVID-19 seen between March 16, 2020 and January 7, 2021. Data included demographics, comorbidities, medications, vital signs, laboratory tests, pulmonary function tests, patient disposition, and co-infections. The overdispersed data (aod) R package was used to create a logit model using COVID-19 diagnosis by PCR as the dichotomous outcome variable. Univariate, conventional multivariate and elastic net machine learning were used to analyze data.
    Results: Male gender, elevated baseline temperature, and respiratory rate predicted COVID-19 diagnosis. Eosinopenia, neutrophilia, and lymphocytosis were also associated with COVID-19 diagnosis. However, asthma and COPD diagnoses were not associated with SARS-CoV-2 PCR positive test. Male gender, low oxygen saturation, and lower forced expiratory volume in 1 s (FEV
    Conclusions: CRD patients with acute respiratory symptoms in the ambulatory setting were more likely to have COVID-19 if male, febrile and tachypneic. Patients with lower pre-morbid FEV
    MeSH term(s) Adult ; COVID-19/diagnosis ; COVID-19/epidemiology ; COVID-19 Testing ; COVID-19 Vaccines ; Fever/diagnosis ; Humans ; Male ; Referral and Consultation ; Retrospective Studies ; SARS-CoV-2
    Chemical Substances COVID-19 Vaccines
    Language English
    Publishing date 2022-04-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1003348-8
    ISSN 1532-3064 ; 0954-6111
    ISSN (online) 1532-3064
    ISSN 0954-6111
    DOI 10.1016/j.rmed.2022.106832
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Refractory neutrophilic asthma and ciliary genes.

    Guntur, Vamsi P / Manka, Laurie A / Moore, Camille M / Wynn, Elizabeth / Vladar, Eszter K / Alam, Rafeul / Pham, Tuyet-Hang / Fingerlin, Tasha E / Martin, Richard J

    The Journal of allergy and clinical immunology

    2022  Volume 149, Issue 6, Page(s) 1970–1980

    Abstract: Background: Refractory asthma (RA) remains poorly controlled, resulting in high health care utilization despite guideline-based therapies. Patients with RA manifest higher neutrophilia as a result of increased airway inflammation and subclinical ... ...

    Abstract Background: Refractory asthma (RA) remains poorly controlled, resulting in high health care utilization despite guideline-based therapies. Patients with RA manifest higher neutrophilia as a result of increased airway inflammation and subclinical infection, the underlying mechanisms of which remain unclear.
    Objective: We sought to characterize and clinically correlate gene expression differences between refractory and nonrefractory (NR) asthma to uncover molecular mechanisms driving group distinctions.
    Methods: Microarray gene expression of paired airway epithelial brush and endobronchial biopsy samples was compared between 60 RA and 30 NR subjects. Subjects were hierarchically clustered to identify subgroups of RA, and biochemical and clinical traits (airway inflammatory molecules, respiratory pathogens, chest imaging) were compared between groups. Weighted gene correlation network analysis was used to identify coexpressed gene modules. Module expression scores were compared between groups using linear regression, controlling for age, sex, and body mass index.
    Results: Differential gene expression analysis showed upregulation of proneutrophilic and downregulation of ciliary function genes/pathways in RA compared to NR. A subgroup of RA with downregulated ciliary gene expression had increased levels of subclinical infections, airway neutrophilia, and eosinophilia as well as higher chest imaging mucus burden compared to other RA, the dominant differences between RA and NR. Weighted gene correlation network analysis identified gene modules related to ciliary function, which were downregulated in RA and were associated with lower pulmonary function and higher airway wall thickness/inflammation, markers of poorer asthma control.
    Conclusions: Identification of a novel ciliary-deficient subgroup of RA suggests that diminished mucociliary clearance may underlie repeated asthma exacerbations despite adequate treatment, necessitating further exploration of function, mechanism, and therapeutics.
    MeSH term(s) Asthma/metabolism ; Biomarkers ; Bronchoscopy ; Humans ; Inflammation/metabolism ; Lung/pathology ; Mucociliary Clearance
    Chemical Substances Biomarkers
    Language English
    Publishing date 2022-01-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2021.12.761
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: The potential use of tyrosine kinase inhibitors in severe asthma.

    Guntur, Vamsi P / Reinero, Carol R

    Current opinion in allergy and clinical immunology

    2012  Volume 12, Issue 1, Page(s) 68–75

    Abstract: Purpose of review: Severe asthma comprises heterogeneous phenotypes that share in common a poor response to traditional therapies. Recent and ongoing work with tyrosine kinase inhibitors suggests a potential beneficial role in treatment of severe asthma. ...

    Abstract Purpose of review: Severe asthma comprises heterogeneous phenotypes that share in common a poor response to traditional therapies. Recent and ongoing work with tyrosine kinase inhibitors suggests a potential beneficial role in treatment of severe asthma.
    Recent findings: Various receptor and nonreceptor tyrosine kinase pathways contribute to aspects of airway inflammation, airway hyperresponsiveness, and remodeling of asthma. Selective and nonselective tyrosine kinase inhibitors may be useful to block pathways that are pathologically overactive or overexpressed in severe asthma. Recent in-vivo studies have demonstrated the utility of inhibitors against specific tyrosine kinases (epidermal growth factor receptor, c-kit/platelet derived growth factor receptor, vascular endothelial growth factor receptor, spleen tyrosine kinase, and janus kinase) in altering key aspects of severe asthma.
    Summary: Asthma and even severe asthma does not consist of a single phenotype. Targeting key inflammatory and remodeling pathways engaged across subphenotypes with tyrosine kinase inhibitors appears to hold promise.
    MeSH term(s) Airway Remodeling/drug effects ; Airway Remodeling/immunology ; Asthma/drug therapy ; Asthma/enzymology ; Asthma/immunology ; Humans ; Protein Kinase Inhibitors/pharmacology ; Protein Kinase Inhibitors/therapeutic use ; Protein-Tyrosine Kinases/antagonists & inhibitors ; Protein-Tyrosine Kinases/immunology ; Signal Transduction/drug effects
    Chemical Substances Protein Kinase Inhibitors ; Protein-Tyrosine Kinases (EC 2.7.10.1)
    Language English
    Publishing date 2012-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2088710-3
    ISSN 1473-6322 ; 1528-4050
    ISSN (online) 1473-6322
    ISSN 1528-4050
    DOI 10.1097/ACI.0b013e32834ecb4f
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Benralizumab as a Steroid-Sparing Treatment Option in Eosinophilic Granulomatosis with Polyangiitis.

    Guntur, Vamsi P / Manka, Laurie A / Denson, Joshua L / Dunn, Ryan M / Dollin, Yeshai T / Gill, Mary / Kolakowski, Christena / Strand, Matthew J / Wechsler, Michael E

    The journal of allergy and clinical immunology. In practice

    2020  Volume 9, Issue 3, Page(s) 1186–1193.e1

    Abstract: ... with the pre- and posttreatment phases (4.6, P = .008 for treatment vs pre- and postphases combined ...

    Abstract Background: Eosinophilic granulomatosis with polyangiitis (EGPA) is a vasculitis associated with significant morbidity and mortality that has historically been treated with systemic corticosteroids and immunosuppressants. The IL-5 antagonist mepolizumab was Food and Drug Administration approved in 2017 after demonstrating safety and efficacy in EGPA. We hypothesized that benralizumab, an IL-5 receptor antagonist approved for eosinophilic asthma, would demonstrate safety and efficacy in EGPA.
    Objectives: To determine the safety and efficacy of benralizumab in EGPA as measured by reduction in oral corticosteroid dose and EGPA exacerbations.
    Methods: We conducted a prospective 40-week open-label pilot study of benralizumab 30 mg administered subcutaneously in 10 patients with EGPA. Adverse events, oral corticosteroid dosing, exacerbations, and lung function were evaluated before, during, and after benralizumab treatment. Paired tests and tests derived from longitudinal models were used to compare outcome variables between phases or visits.
    Results: Benralizumab was well tolerated and resulted in reduction of median corticosteroid dose from 15 mg at the start to 2 mg at the end of treatment. Geometric mean corticosteroid dose was reduced from 11.6 mg during pretreatment to 6.3 mg during treatment phase. Five patients were able to achieve a dose of 0 mg. Mean annualized exacerbation rate was lowest during the treatment (1.5) compared with the pre- and posttreatment phases (4.6, P = .008 for treatment vs pre- and postphases combined).
    Conclusions: Benralizumab was well tolerated, facilitated oral corticosteroid reduction, and reduced exacerbations in EGPA. Larger controlled trials are warranted to further evaluate the role of benralizumab in EGPA.
    MeSH term(s) Antibodies, Monoclonal, Humanized ; Churg-Strauss Syndrome/diagnosis ; Churg-Strauss Syndrome/drug therapy ; Granulomatosis with Polyangiitis ; Humans ; Pilot Projects ; Prospective Studies ; Steroids
    Chemical Substances Antibodies, Monoclonal, Humanized ; Steroids ; benralizumab (71492GE1FX)
    Language English
    Publishing date 2020-10-14
    Publishing country United States
    Document type Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2843237-X
    ISSN 2213-2201 ; 2213-2198
    ISSN (online) 2213-2201
    ISSN 2213-2198
    DOI 10.1016/j.jaip.2020.09.054
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top