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  1. Article ; Online: Glyoxylate Shunt and Pyruvate-to-Acetoin Shift Are Specific Stress Responses Induced by Colistin and Ceragenin CSA-13 in Enterobacter hormaechei ST89.

    Prasad, Suhanya V / Fiedoruk, Krzysztof / Zakrzewska, Magdalena / Savage, Paul B / Bucki, Robert

    Microbiology spectrum

    2023  Volume 11, Issue 4, Page(s) e0121523

    Abstract: Ceragenins, including CSA-13, are cationic antimicrobials that target the bacterial cell envelope differently than colistin. However, the molecular basis of their action is not fully understood. Here, we examined the genomic and transcriptome responses ... ...

    Abstract Ceragenins, including CSA-13, are cationic antimicrobials that target the bacterial cell envelope differently than colistin. However, the molecular basis of their action is not fully understood. Here, we examined the genomic and transcriptome responses by Enterobacter hormaechei after prolonged exposure to either CSA-13 or colistin. Resistance of the
    MeSH term(s) Colistin/pharmacology ; Anti-Bacterial Agents/pharmacology ; Acetoin ; Pyruvic Acid ; Drug Resistance, Bacterial/genetics ; Anti-Infective Agents/pharmacology ; Glyoxylates ; Microbial Sensitivity Tests ; Bacterial Proteins/genetics
    Chemical Substances Colistin (Z67X93HJG1) ; Anti-Bacterial Agents ; ceragenin CSA-13 ; Acetoin (BG4D34CO2H) ; Pyruvic Acid (8558G7RUTR) ; Anti-Infective Agents ; Glyoxylates ; Bacterial Proteins
    Language English
    Publishing date 2023-06-20
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.01215-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Extracellular vimentin as a modulator of the immune response and an important player during infectious diseases.

    Suprewicz, Łukasz / Zakrzewska, Magdalena / Okła, Sławomir / Głuszek, Katarzyna / Sadzyńska, Alicja / Deptuła, Piotr / Fiedoruk, Krzysztof / Bucki, Robert

    Immunology and cell biology

    2024  Volume 102, Issue 3, Page(s) 167–178

    Abstract: Vimentin, an intermediate filament protein primarily recognized for its intracellular role in maintaining cellular structure, has recently garnered increased attention and emerged as a pivotal extracellular player in immune regulation and host-pathogen ... ...

    Abstract Vimentin, an intermediate filament protein primarily recognized for its intracellular role in maintaining cellular structure, has recently garnered increased attention and emerged as a pivotal extracellular player in immune regulation and host-pathogen interactions. While the functions of extracellular vimentin were initially overshadowed by its cytoskeletal role, accumulating evidence now highlights its significance in diverse physiological and pathological events. This review explores the multifaceted role of extracellular vimentin in modulating immune responses and orchestrating interactions between host cells and pathogens. It delves into the mechanisms underlying vimentin's release into the extracellular milieu, elucidating its unconventional secretion pathways and identifying critical molecular triggers. In addition, the future perspectives of using extracellular vimentin in diagnostics and as a target protein in the treatment of diseases are discussed.
    MeSH term(s) Humans ; Vimentin ; Intermediate Filaments ; Cytoskeleton ; Communicable Diseases ; Host-Pathogen Interactions
    Chemical Substances Vimentin
    Language English
    Publishing date 2024-01-11
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 284057-1
    ISSN 1440-1711 ; 0818-9641
    ISSN (online) 1440-1711
    ISSN 0818-9641
    DOI 10.1111/imcb.12721
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Pneumocystis

    Zakrzewska, Magdalena / Roszkowska, Renata / Zakrzewski, Mateusz / Maciorkowska, Elżbieta

    Journal of mother and child

    2021  Volume 23, Issue 3, Page(s) 159–162

    Abstract: Pneumocystis carinii pneumonia is a common opportunistic respiratory infection among children with human immunodeficiency virus and a weakened immune system. The primary infection in immunocompetent patients may be asymptomatic, whereas fever, shortness ... ...

    Abstract Pneumocystis carinii pneumonia is a common opportunistic respiratory infection among children with human immunodeficiency virus and a weakened immune system. The primary infection in immunocompetent patients may be asymptomatic, whereas fever, shortness of breath, night sweats, nonproductive (dry) cough, pneumonia, progressive respiratory distress and apnea are cardinal symptoms of full-blown pneumocystis pneumonia. The diagnosis can be confirmed by histochemical staining of biological specimens or, recently, by polymerase chain reaction. International recommendations indicate that the drug of choice is the intravenously administered trimethoprim-sulfamethoxazole combination. Early diagnosis and appropriate treatment reduce the mortality of the disease. This article briefly highlights the epidemiology of Pneumocystis pneumonia, its diagnosis and therapeutic options in the pediatric population.
    MeSH term(s) AIDS-Related Opportunistic Infections/diagnosis ; AIDS-Related Opportunistic Infections/drug therapy ; AIDS-Related Opportunistic Infections/prevention & control ; Child ; Humans ; Pneumonia, Pneumocystis/diagnosis ; Pneumonia, Pneumocystis/drug therapy ; Pneumonia, Pneumocystis/etiology ; Pneumonia, Pneumocystis/prevention & control ; Risk Factors ; Trimethoprim, Sulfamethoxazole Drug Combination/therapeutic use
    Chemical Substances Trimethoprim, Sulfamethoxazole Drug Combination (8064-90-2)
    Language English
    Publishing date 2021-01-29
    Publishing country Poland
    Document type Journal Article ; Review
    ISSN 2719-535X
    ISSN (online) 2719-535X
    DOI 10.34763/devperiodmed.20192303.159162
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The Oncogenic Relevance of miR-17-92 Cluster and Its Paralogous miR-106b-25 and miR-106a-363 Clusters in Brain Tumors.

    Gruszka, Renata / Zakrzewska, Magdalena

    International journal of molecular sciences

    2018  Volume 19, Issue 3

    Abstract: The fundamental function of ribonucleic acids is to transfer genetic information from DNA to protein during translation process, however, this is not the only way connecting active RNA sequences with essential biological processes. Up until now, many RNA ...

    Abstract The fundamental function of ribonucleic acids is to transfer genetic information from DNA to protein during translation process, however, this is not the only way connecting active RNA sequences with essential biological processes. Up until now, many RNA subclasses of different size, structure, and biological function were identified. Among them, there are non-coding single-stranded microRNAs (miRNAs). This subclass comprises RNAs of 19-25 nucleotides in length that modulate the activity of well-defined coding RNAs and play a crucial role in many physiological and pathological processes. miRNA genes are located both in exons, introns, and also within non-translated regions. Several miRNAs that are transcribed from the adjacent miRNA genes are called cluster. One of the largest ones is miR-17-92 cluster known as OncomiR-1 due to its strong link to oncogenesis. Six miRNAs from the OncomiR-1 have been shown to play important roles in various physiological cellular processes but also through inhibition of cell death in many cancer-relevant processes. Due to the origin and similarity of the sequence, miR-17-92 cluster and paralogs, miR-106b-25 and miR-106a-363 clusters were defined. Here we discuss the oncogenic function of those miRNA subgroups found in many types of cancers, including brain tumors.
    MeSH term(s) Animals ; Brain Neoplasms/genetics ; Carcinogenesis/genetics ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Humans ; Mice ; MicroRNAs/genetics ; MicroRNAs/physiology ; Multigene Family ; Neuroblastoma/genetics ; Oncogenes/genetics ; Oncogenes/physiology
    Chemical Substances MIR17HG, human ; MIRN106 microRNA, human ; MicroRNAs
    Language English
    Publishing date 2018-03-16
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms19030879
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: mRNA and miRNA Expression Analyses of the

    Gruszka, Renata / Zakrzewski, Krzysztof / Liberski, Paweł Piotr / Zakrzewska, Magdalena

    International journal of molecular sciences

    2021  Volume 22, Issue 2

    Abstract: Numerous molecular factors disrupt the correctness of the cell cycle process leading to the development of cancer due to increased cell proliferation. Among known causative factors of such process is abnormal gene expression. Nowadays in the light of ... ...

    Abstract Numerous molecular factors disrupt the correctness of the cell cycle process leading to the development of cancer due to increased cell proliferation. Among known causative factors of such process is abnormal gene expression. Nowadays in the light of current knowledge such alterations are frequently considered in the context of mRNA-miRNA correlation. One of the molecular factors with potential value in tumorigenesis is the feedback loop between
    MeSH term(s) Astrocytoma/genetics ; Astrocytoma/pathology ; Brain Neoplasms/genetics ; Brain Neoplasms/pathology ; Carcinogenesis/genetics ; Cell Line, Tumor ; Cell Proliferation/genetics ; E2F Transcription Factors/genetics ; Gene Expression Regulation, Neoplastic/genetics ; Gene Regulatory Networks/genetics ; Humans ; MicroRNAs/genetics ; Pediatrics ; Proto-Oncogene Proteins c-myc/genetics ; RNA, Messenger/genetics
    Chemical Substances E2F Transcription Factors ; MIR17HG, human ; MIRN106 microRNA, human ; MYC protein, human ; MicroRNAs ; Proto-Oncogene Proteins c-myc ; RNA, Messenger
    Language English
    Publishing date 2021-01-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22020543
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Pneumocystis pneumonia: still a serious disease in children.

    Zakrzewska, Magdalena / Roszkowska, Renata / Zakrzewski, Mateusz / Maciorkowska, Elżbieta

    Developmental period medicine

    2019  Volume 23, Issue 3, Page(s) 159–162

    Abstract: Pneumocystis carinii pneumonia is a common opportunistic respiratory infection among children with human immunodeficiency virus and a weakened immune system. The primary infection in immunocompetent patients may be asymptomatic, whereas fever, shortness ... ...

    Abstract Pneumocystis carinii pneumonia is a common opportunistic respiratory infection among children with human immunodeficiency virus and a weakened immune system. The primary infection in immunocompetent patients may be asymptomatic, whereas fever, shortness of breath, night sweats, nonproductive (dry) cough, pneumonia, progressive respiratory distress and apnea are cardinal symptoms of full-blown pneumocystis pneumonia. The diagnosis can be confirmed by histochemical staining of biological specimens or, recently, by polymerase chain reaction. International recommendations indicate that the drug of choice is the intravenously administered trimethoprim-sulfamethoxazole combination. Early diagnosis and appropriate treatment reduce the mortality of the disease. This article briefly highlights the epidemiology of Pneumocystis pneumonia, its diagnosis and therapeutic options in the pediatric population.
    MeSH term(s) AIDS-Related Opportunistic Infections/complications ; AIDS-Related Opportunistic Infections/diagnosis ; AIDS-Related Opportunistic Infections/drug therapy ; Anti-Infective Agents/therapeutic use ; Child ; Child, Preschool ; Humans ; Pneumonia, Pneumocystis/complications ; Pneumonia, Pneumocystis/diagnosis ; Pneumonia, Pneumocystis/drug therapy ; Risk Factors ; Trimethoprim, Sulfamethoxazole Drug Combination/therapeutic use
    Chemical Substances Anti-Infective Agents ; Trimethoprim, Sulfamethoxazole Drug Combination (8064-90-2)
    Language English
    Publishing date 2019-10-22
    Publishing country Poland
    Document type Journal Article ; Review
    ISSN 2354-0060
    ISSN (online) 2354-0060
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Ceragenin-mediated disruption of Pseudomonas aeruginosa biofilms.

    Wnorowska, Urszula / Łysik, Dawid / Piktel, Ewelina / Zakrzewska, Magdalena / Okła, Sławomir / Lesiak, Agata / Spałek, Jakub / Mystkowska, Joanna / Savage, Paul B / Janmey, Paul / Fiedoruk, Krzysztof / Bucki, Robert

    PloS one

    2024  Volume 19, Issue 2, Page(s) e0298112

    Abstract: Background: Microbial biofilms, as a hallmark of cystic fibrosis (CF) lung disease and other chronic infections, remain a desirable target for antimicrobial therapy. These biopolymer-based viscoelastic structures protect pathogenic organisms from immune ...

    Abstract Background: Microbial biofilms, as a hallmark of cystic fibrosis (CF) lung disease and other chronic infections, remain a desirable target for antimicrobial therapy. These biopolymer-based viscoelastic structures protect pathogenic organisms from immune responses and antibiotics. Consequently, treatments directed at disrupting biofilms represent a promising strategy for combating biofilm-associated infections. In CF patients, the viscoelasticity of biofilms is determined mainly by their polymicrobial nature and species-specific traits, such as Pseudomonas aeruginosa filamentous (Pf) bacteriophages. Therefore, we examined the impact of microbicidal ceragenins (CSAs) supported by mucolytic agents-DNase I and poly-aspartic acid (pASP), on the viability and viscoelasticity of mono- and bispecies biofilms formed by Pf-positive and Pf-negative P. aeruginosa strains co-cultured with Staphylococcus aureus or Candida albicans.
    Methods: The in vitro antimicrobial activity of ceragenins against P. aeruginosa in mono- and dual-species cultures was assessed by determining minimum inhibitory concentration (MIC) and minimum bactericidal/fungicidal concentration (MBC/MFC). Inhibition of P. aeruginosa mono- and dual-species biofilms formation by ceragenins alone and in combination with DNase I or poly-aspartic acid (pASP) was estimated by the crystal violet assay. Additionally, the viability of the biofilms was measured by colony-forming unit (CFU) counting. Finally, the biofilms' viscoelastic properties characterized by shear storage (G') and loss moduli (G"), were analyzed with a rotational rheometer.
    Results: Our results demonstrated that ceragenin CSA-13 inhibits biofilm formation and increases its fluidity regardless of the Pf-profile and species composition; however, the Pf-positive biofilms are characterized by elevated viscosity and elasticity parameters.
    Conclusion: Due to its microbicidal and viscoelasticity-modifying properties, CSA-13 displays therapeutic potential in biofilm-associated infections, especially when combined with mucolytic agents.
    MeSH term(s) Humans ; Pseudomonas aeruginosa ; Aspartic Acid ; Expectorants ; Anti-Bacterial Agents/pharmacology ; Anti-Infective Agents/pharmacology ; Biofilms ; Cystic Fibrosis ; Deoxyribonuclease I ; Microbial Sensitivity Tests ; Pseudomonas Infections ; Steroids
    Chemical Substances ceragenins ; Aspartic Acid (30KYC7MIAI) ; Expectorants ; Anti-Bacterial Agents ; Anti-Infective Agents ; Deoxyribonuclease I (EC 3.1.21.1) ; Steroids
    Language English
    Publishing date 2024-02-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0298112
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Gestational Dysfunction-Driven Diets and Probiotic Supplementation Correlate with the Profile of Allergen-Specific Antibodies in the Serum of Allergy Sufferers.

    Ogrodowczyk, Anna Maria / Zakrzewska, Magdalena / Romaszko, Ewa / Wróblewska, Barbara

    Nutrients

    2020  Volume 12, Issue 8

    Abstract: Background: Maternal diet has significant effects on development of childhood atopic disease and hypersensitivity development. However, the gestational dysfunctions demanding special diets are becoming a widespread phenomenon, their immunological ... ...

    Abstract Background: Maternal diet has significant effects on development of childhood atopic disease and hypersensitivity development. However, the gestational dysfunctions demanding special diets are becoming a widespread phenomenon, their immunological implications can be manifested in the profile of antibodies in the offspring's serum.
    Methods: 153 allergic and 150 healthy individuals were diagnosed for allergy using specific antibody and cytokine immunoassay tests. The medical history of subjects along with mothers' course of pregnancy was completed by allergologist's anamnesis. A self-organizing neural network and multivariate analyses to complex data and pick basic interactions were used.
    Results: Two significant explanatory modules were determined. The first was formed by gestational diabetic and cholestatic diet, infant formula feeding type, probiotic supplementation and its BMI index, moderate IgE, increased IgG levels of antibodies and single or poly-food allergy type (7 clusters). The second was formed by gestational vegan/vegetarian and elimination diet, maternal probiotic supplementation, sex, high IgE total antibodies and food and mixed poly-allergy to aero- and food-origin allergens (19 clusters).
    Conclusions: Significant associations were observed between special gestational diet intake underlying foetal programming and the mechanisms of childhood allergy. The novelty is the positive association between diabetic and cholestatic diet intake and IgE/IgG-mediated food hypersensitivity.
    MeSH term(s) Adult ; Autoantibodies/blood ; Autoantibodies/immunology ; Child ; Child, Preschool ; Diet/adverse effects ; Diet/methods ; Female ; Food Hypersensitivity/blood ; Food Hypersensitivity/immunology ; Humans ; Hypersensitivity/blood ; Hypersensitivity/immunology ; Immunoglobulin E/immunology ; Immunoglobulin G/immunology ; Maternal Nutritional Physiological Phenomena/immunology ; Multivariate Analysis ; Neural Networks, Computer ; Pregnancy ; Prenatal Exposure Delayed Effects/blood ; Prenatal Exposure Delayed Effects/immunology ; Probiotics/therapeutic use
    Chemical Substances Autoantibodies ; Immunoglobulin G ; Immunoglobulin E (37341-29-0)
    Language English
    Publishing date 2020-08-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2518386-2
    ISSN 2072-6643 ; 2072-6643
    ISSN (online) 2072-6643
    ISSN 2072-6643
    DOI 10.3390/nu12082381
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: microRNA interaction with MAPK and AKT pathways in paediatric brain tumours - preliminary results and review of the literature.

    Gruszka, Renata / Zakrzewski, Krzysztof / Liberski, Paweł P / Zakrzewska, Magdalena

    Folia neuropathologica

    2020  Volume 58, Issue 2, Page(s) 123–132

    Abstract: Nowadays molecular investigations have a significant impact on the understanding of primary brain tumour biology,as well as on their classification and progress in the treatment modalities. Among novel type of biomarkers with potential therapeutic value, ...

    Abstract Nowadays molecular investigations have a significant impact on the understanding of primary brain tumour biology,as well as on their classification and progress in the treatment modalities. Among novel type of biomarkers with potential therapeutic value, microRNAs (miRNAs) are considered in some cases. miRNAs are small molecules regu-lating gene expression, including genes encoding key proteins involved in signalling pathways responsible for growth and cell survival during tumour formation. Incorrectly hyperactivated pathways implicated in brain tumour development are inter alia the PI3K/AKT/mTOR and RAS/MAPK/ERK cascades associated with worse prognosis and decreased patient survival. This work presents relationships between changes in the expression of individual miRNAs and the genes involved in the regulation of PI3K/AKT/mTOR and RAS/MAPK/ERK signalling pathways in primary brain tumours. Herein we present the preliminary results of miR-17-5p and miR-20a (key representatives of the miR-17-92 oncogenic cluster) expression analysis and their connection with signalling pathway activation in two of the most frequent paediatric tumours: medulloblastoma and ependymoma. Our study was performed using the microarray and qPCR techniques and showed PI3K/AKT/mTOR and RAS/MAPK/ERK among the forefront of the list of pathways with the largest number of genes involved in their activation compared to the control. Predicted target analysis indicated the agents from miR-17-92 cluster within miRNAs regulating activity of PI3K/AKT/mTOR and RAS/MAPK/ERK deregulated genes. The expression level of key representatives of the oncogenic cluster, miR-17-5p, and miR-20a, increased with the WHO grade of the analysed cases; the highest levels were found in medulloblastomas.
    MeSH term(s) Brain Neoplasms/genetics ; Brain Neoplasms/metabolism ; Child ; Female ; Gene Expression Regulation, Neoplastic/genetics ; Humans ; MAP Kinase Signaling System/physiology ; Male ; MicroRNAs/genetics ; Proto-Oncogene Proteins c-akt/metabolism ; Signal Transduction/physiology
    Chemical Substances MicroRNAs ; Proto-Oncogene Proteins c-akt (EC 2.7.11.1)
    Language English
    Publishing date 2020-07-29
    Publishing country Poland
    Document type Journal Article ; Review
    ZDB-ID 1310363-5
    ISSN 1509-572X ; 0028-3894 ; 1641-4640
    ISSN (online) 1509-572X
    ISSN 0028-3894 ; 1641-4640
    DOI 10.5114/fn.2020.96734
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Gestational Dysfunction-Driven Diets and Probiotic Supplementation Correlate with the Profile of Allergen-Specific Antibodies in the Serum of Allergy Sufferers

    Ogrodowczyk, Anna Maria / Zakrzewska, Magdalena / Romaszko, Ewa / Wróblewska, Barbara

    Nutrients. 2020 Aug. 09, v. 12, no. 8

    2020  

    Abstract: Background: Maternal diet has significant effects on development of childhood atopic disease and hypersensitivity development. However, the gestational dysfunctions demanding special diets are becoming a widespread phenomenon, their immunological ... ...

    Abstract Background: Maternal diet has significant effects on development of childhood atopic disease and hypersensitivity development. However, the gestational dysfunctions demanding special diets are becoming a widespread phenomenon, their immunological implications can be manifested in the profile of antibodies in the offspring’s serum. Methods: 153 allergic and 150 healthy individuals were diagnosed for allergy using specific antibody and cytokine immunoassay tests. The medical history of subjects along with mothers’ course of pregnancy was completed by allergologist’s anamnesis. A self-organizing neural network and multivariate analyses to complex data and pick basic interactions were used. Results: Two significant explanatory modules were determined. The first was formed by gestational diabetic and cholestatic diet, infant formula feeding type, probiotic supplementation and its BMI index, moderate IgE, increased IgG levels of antibodies and single or poly-food allergy type (7 clusters). The second was formed by gestational vegan/vegetarian and elimination diet, maternal probiotic supplementation, sex, high IgE total antibodies and food and mixed poly-allergy to aero- and food-origin allergens (19 clusters). Conclusions: Significant associations were observed between special gestational diet intake underlying foetal programming and the mechanisms of childhood allergy. The novelty is the positive association between diabetic and cholestatic diet intake and IgE/IgG-mediated food hypersensitivity.
    Keywords antibodies ; blood serum ; childhood ; cytokines ; elimination diets ; food allergies ; immunoassays ; infant formulas ; maternal nutrition ; medical history ; pregnancy ; probiotics ; progeny ; vegan diet
    Language English
    Dates of publication 2020-0809
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NAL-light
    ZDB-ID 2518386-2
    ISSN 2072-6643
    ISSN 2072-6643
    DOI 10.3390/nu12082381
    Database NAL-Catalogue (AGRICOLA)

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