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  1. Article ; Online: Susceptibility of the Elderly to SARS-CoV-2 Infection: ACE-2 Overexpression, Shedding, and Antibody-dependent Enhancement (ADE).

    Peron, Jean Pierre Schatzmann / Nakaya, Helder

    Clinics (Sao Paulo, Brazil)

    2020  Volume 75, Page(s) e1912

    Abstract: The world is currently facing a serious SARS-CoV-2 infection pandemic. ... This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics ... that occurred in 2002 and 2013, respectively. ... ...

    Abstract The world is currently facing a serious SARS-CoV-2 infection pandemic. </mac_aq>This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics</mac_aq> that occurred in 2002 and 2013, respectively. SARS-CoV-2 has currently infected more than 142,000 people, causing </mac_aq>5,000 deaths and spreading across more than 130 </mac_aq>countries worldwide. The spreading capacity of the virus clearly demonstrates the potential threat </mac_aq>of respiratory viruses to human health, thereby reiterating to the governments around the world that preventive </mac_aq>health policies and scientific research are pivotal to overcoming the crisis. Coronavirus disease (COVID-19) causes flu-like symptoms in most cases. However, approximately 15% of the patients need hospitalization, and 5% require assisted ventilation, depending on the cohorts studied. What is intriguing, however, is the higher susceptibility of the elderly, especially individuals who are older than 60 years of age, and have comorbidities, including hypertension, diabetes, and heart disease. In fact, the death rate in this group may be up to 10-12%. Interestingly, children are somehow less susceptible and are not considered as a risk group. Therefore, in this review, we discuss some possible molecular and cellular mechanisms by virtue of which the elderly subjects may be more susceptible to severe COVID-19. Toward this, we raise two main </mac_aq>points, i) increased ACE-2 expression in pulmonary and heart tissues in users of chronic angiotensin 1 </mac_aq>receptor (AT1R) blockers; and ii) antibody-dependent enhancement (ADE) after previous exposure to other circulating coronaviruses. We believe that these points are pivotal for a better understanding of the pathogenesis of severe COVID-19, and must be carefully addressed by physicians and scientists in the field.
    MeSH term(s) Aged ; Angiotensin-Converting Enzyme 2 ; Antibody Formation/immunology ; Antibody-Dependent Enhancement ; Betacoronavirus ; Biomarkers/metabolism ; COVID-19 ; Coronavirus Infections/enzymology ; Coronavirus Infections/immunology ; Coronavirus Infections/metabolism ; Humans ; Pandemics ; Peptidyl-Dipeptidase A/immunology ; Peptidyl-Dipeptidase A/metabolism ; Pneumonia, Viral/enzymology ; Pneumonia, Viral/immunology ; Pneumonia, Viral/metabolism ; SARS-CoV-2 ; Up-Regulation
    Chemical Substances Biomarkers ; Peptidyl-Dipeptidase A (EC 3.4.15.1) ; ACE2 protein, human (EC 3.4.17.23) ; Angiotensin-Converting Enzyme 2 (EC 3.4.17.23)
    Keywords covid19
    Language English
    Publishing date 2020-05-15
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2182801-5
    ISSN 1980-5322 ; 1807-5932
    ISSN (online) 1980-5322
    ISSN 1807-5932
    DOI 10.6061/clinics/2020/e1912
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Susceptibility of the Elderly to SARS-CoV-2 Infection

    Peron, Jean Pierre Schatzmann / Nakaya, Helder

    Clinics v.75 2020

    ACE-2 Overexpression, Shedding, and Antibody-dependent Enhancement (ADE)

    2020  

    Abstract: The world is currently facing a serious SARS-CoV-2 infection pandemic. ... This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics ... that occurred in 2002 and 2013, respectively. ... ...

    Abstract The world is currently facing a serious SARS-CoV-2 infection pandemic. </mac_aq>This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics</mac_aq> that occurred in 2002 and 2013, respectively. SARS-CoV-2 has currently infected more than 142,000 people, causing </mac_aq>5,000 deaths and spreading across more than 130 </mac_aq>countries worldwide. The spreading capacity of the virus clearly demonstrates the potential threat </mac_aq>of respiratory viruses to human health, thereby reiterating to the governments around the world that preventive </mac_aq>health policies and scientific research are pivotal to overcoming the crisis. Coronavirus disease (COVID-19) causes flu-like symptoms in most cases. However, approximately 15% of the patients need hospitalization, and 5% require assisted ventilation, depending on the cohorts studied. What is intriguing, however, is the higher susceptibility of the elderly, especially individuals who are older than 60 years of age, and have comorbidities, including hypertension, diabetes, and heart disease. In fact, the death rate in this group may be up to 10-12%. Interestingly, children are somehow less susceptible and are not considered as a risk group. Therefore, in this review, we discuss some possible molecular and cellular mechanisms by virtue of which the elderly subjects may be more susceptible to severe COVID-19. Toward this, we raise two main </mac_aq>points, i) increased ACE-2 expression in pulmonary and heart tissues in users of chronic angiotensin 1 </mac_aq>receptor (AT1R) blockers; and ii) antibody-dependent enhancement (ADE) after previous exposure to other circulating coronaviruses. We believe that these points are pivotal for a better understanding of the pathogenesis of severe COVID-19, and must be carefully addressed by physicians and scientists in the field.
    Keywords SARS-CoV-2 ; Immunopathology ; ACE-2 ; covid19
    Subject code 360
    Language English
    Publishing date 2020-01-01
    Publisher Faculdade de Medicina / USP
    Publishing country br
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: ZIKV Infection and miRNA Network in Pathogenesis and Immune Response

    Polonio, Carolina Manganeli / Peron, Jean Pierre Schatzmann

    Viruses. 2021 Oct. 04, v. 13, no. 10

    2021  

    Abstract: Over the years, viral infections have caused severe illness in humans. Zika Virus (ZIKV) is a flavivirus transmitted by mosquito vectors that leads to notable neurological impairment, whose most dramatic impact is the Congenital ZIKV Syndrome (CZS). ZIKV ...

    Abstract Over the years, viral infections have caused severe illness in humans. Zika Virus (ZIKV) is a flavivirus transmitted by mosquito vectors that leads to notable neurological impairment, whose most dramatic impact is the Congenital ZIKV Syndrome (CZS). ZIKV targets neuronal precursor cells leading to apoptosis and further impairment of neuronal development, causing microcephaly, lissencephaly, ventriculomegaly, and calcifications. Several regulators of biological processes are involved in CZS development, and in this context, microRNAs (miRNAs) seem to have a fundamental role. miRNAs are important regulators of protein translation, as they form the RISC silencing complex and interact with complementary mRNA target sequences to further post-transcriptional repression. In this context, little is known about their participation in the pathogenesis of viral infections. In this review, we discuss how miRNAs could relate to ZIKV and other flavivirus infections.
    Keywords Flavivirus infections ; Zika virus ; apoptosis ; complementary RNA ; congenital abnormalities ; gene silencing ; immune response ; messenger RNA ; microRNA ; mosquito-borne diseases ; nervous system diseases ; pathogenesis ; post-translational modification ; stem cells
    Language English
    Dates of publication 2021-1004
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2516098-9
    ISSN 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13101992
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: ZIKV Infection and miRNA Network in Pathogenesis and Immune Response.

    Polonio, Carolina Manganeli / Peron, Jean Pierre Schatzmann

    Viruses

    2021  Volume 13, Issue 10

    Abstract: Over the years, viral infections have caused severe illness in humans. Zika Virus (ZIKV) is a flavivirus transmitted by mosquito vectors that leads to notable neurological impairment, whose most dramatic impact is the Congenital ZIKV Syndrome (CZS). ZIKV ...

    Abstract Over the years, viral infections have caused severe illness in humans. Zika Virus (ZIKV) is a flavivirus transmitted by mosquito vectors that leads to notable neurological impairment, whose most dramatic impact is the Congenital ZIKV Syndrome (CZS). ZIKV targets neuronal precursor cells leading to apoptosis and further impairment of neuronal development, causing microcephaly, lissencephaly, ventriculomegaly, and calcifications. Several regulators of biological processes are involved in CZS development, and in this context, microRNAs (miRNAs) seem to have a fundamental role. miRNAs are important regulators of protein translation, as they form the RISC silencing complex and interact with complementary mRNA target sequences to further post-transcriptional repression. In this context, little is known about their participation in the pathogenesis of viral infections. In this review, we discuss how miRNAs could relate to ZIKV and other flavivirus infections.
    MeSH term(s) Animals ; Gene Regulatory Networks/genetics ; Humans ; Immunity/genetics ; Immunity/immunology ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Virus Replication/genetics ; Zika Virus/genetics ; Zika Virus/pathogenicity ; Zika Virus/physiology ; Zika Virus Infection/genetics ; Zika Virus Infection/pathology ; Zika Virus Infection/virology
    Chemical Substances MicroRNAs
    Language English
    Publishing date 2021-10-04
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v13101992
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Susceptibility of the elderly to SARS-COV-2 infection: ACE-2 overexpression, shedding, and antibody-dependent enhancement (ADE)

    Peron, Jean Pierre Schatzmann / Nakaya, Helder

    Clinics

    Abstract: The world is currently facing a serious SARS-CoV-2 infection pandemic. This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics that occurred in 2002 and 2013, respectively. SARS-CoV-2 has ... ...

    Abstract The world is currently facing a serious SARS-CoV-2 infection pandemic. This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics that occurred in 2002 and 2013, respectively. SARS-CoV-2 has currently infected more than 142,000 people, causing 5,000 deaths and spreading across more than 130 countries worldwide. The spreading capacity of the virus clearly demonstrates the potential threat of respiratory viruses to human health, thereby reiterating to the governments around the world that preventive health policies and scientific research are pivotal to overcoming the crisis. Coronavirus disease (COVID-19) causes flu-like symptoms in most cases. However, approximately 15% of the patients need hospitalization, and 5% require assisted ventilation, depending on the cohorts studied. What is intriguing, however, is the higher susceptibility of the elderly, especially individuals who are older than 60 years of age, and have comorbidities, including hypertension, diabetes, and heart disease. In fact, the death rate in this group may be up to 10-12%. Interestingly, children are somehow less susceptible and are not considered as a risk group. Therefore, in this review, we discuss some possible molecular and cellular mechanisms by virtue of which the elderly subjects may be more susceptible to severe COVID-19. Toward this, we raise two main points, i) increased ACE-2 expression in pulmonary and heart tissues in users of chronic angiotensin 1 receptor (AT1R) blockers; and ii) antibody-dependent enhancement (ADE) after previous exposure to other circulating coronaviruses. We believe that these points are pivotal for a better understanding of the pathogenesis of severe COVID-19, and must be carefully addressed by physicians and scientists in the field.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #687442
    Database COVID19

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  6. Article ; Online: Susceptibility of the Elderly to SARS-CoV-2 Infection

    Peron, Jean Pierre Schatzmann / Nakaya, Helder

    Clinics; v.; e1912 ; Clinics; Vol. 75 (2020); e1912 ; Clinics; Vol 75 (2020); e1912 ; 1980-5322 ; 1807-5932

    ACE-2 Overexpression, Shedding, and Antibodydependent Enhancement (ADE)

    2020  Volume 75

    Abstract: The world is currently facing a serious SARS-CoV-2 infection pandemic. This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics that occurred in 2002 and 2013, respectively. SARS-CoV-2 has ... ...

    Abstract The world is currently facing a serious SARS-CoV-2 infection pandemic. This virus is a new isolate of coronavirus, and the current infection crisis has surpassed the SARS and MERS epidemics that occurred in 2002 and 2013, respectively. SARS-CoV-2 has currently infected more than 142,000 people, causing 5,000 deaths and spreading across more than 130 countries worldwide. The spreading capacity of the virus clearly demonstrates the potential threat of respiratory viruses to human health, thereby reiterating to the governments around the world that preventive health policies and scientific research are pivotal to overcoming the crisis. Coronavirus disease (COVID-19) causes flu-like symptoms in most cases. However, approximately 15% of the patients need hospitalization, and 5% require assisted ventilation, depending on the cohorts studied. What is intriguing, however, is the higher susceptibility of the elderly, especially individuals who are older than 60 years of age, and have comorbidities, including hypertension, diabetes, and heart disease. In fact, the death rate in this group may be up to 10-12%. Interestingly, children are somehow less susceptible and are not considered as a risk group. Therefore, in this review, we discuss some possible molecular and cellular mechanisms by virtue of which the elderly subjects may be more susceptible to severe COVID-19. Toward this, we raise two main points, i) increased ACE-2 expression in pulmonary and heart tissues in users of chronic angiotensin 1 receptor (AT1R) blockers; and ii) antibody-dependent enhancement (ADE) after previous exposure to other circulating coronaviruses. We believe that these points are pivotal for a better understanding of the pathogenesis of severe COVID-19, and must be carefully addressed by physicians and scientists in the field.
    Keywords SARS-CoV-2 ; Immunopathology ; ACE-2 ; covid19
    Subject code 360
    Language English
    Publishing date 2020-05-26
    Publisher Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo
    Publishing country br
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Viral receptors for flaviviruses: Not only gatekeepers.

    Oliveira, Lilian G / Peron, Jean Pierre Schatzmann

    Journal of leukocyte biology

    2019  Volume 106, Issue 3, Page(s) 695–701

    Abstract: Arboviruses have been a huge threat for human health since the discovery of yellow fever virus in 1901. Arboviruses are arthropod born viruses, mainly transmitted by mosquitoes and ticks, responsible for more than thousands of deaths annually. The ... ...

    Abstract Arboviruses have been a huge threat for human health since the discovery of yellow fever virus in 1901. Arboviruses are arthropod born viruses, mainly transmitted by mosquitoes and ticks, responsible for more than thousands of deaths annually. The Flavivirideae family is probably the most clinically relevant, as it is composed of very important agents, such as dengue, yellow fever, West Nile, Japanese encephalitis, and, recently, Zika virus. Intriguingly, despite their structural and genomic similarities, flaviviruses may cause conditions ranging from mild infections with fever, cutaneous rash, and headache, to very severe cases, such as hemorrhagic fever, encephalitis, Guillain-Barré syndrome, and microcephaly. These differences may greatly rely on viral burden, tissue tropism, and mechanisms of immune evasion that may depend on both viral and host genetic factors. Unfortunately, very little is known about the biology of these factors, and how they orchestrate these differences. In this context, viral structural proteins and host cellular receptors may have a great relevance, as their interaction dictates not only viral tissue tropism, but also a plethora on intracellular mechanisms that may greatly account for either failure or success of infection. A great number of viral receptors have been described so far, although there is still a huge gap in understanding their overall role during infection. Here we discuss some important aspects triggered after the interaction of flaviviruses and host membrane receptors, and how they change the overall outcome of the infection.
    MeSH term(s) Animals ; Flavivirus/metabolism ; Humans ; Integrins/metabolism ; Phosphatidylserines/metabolism ; Receptors, Virus/metabolism
    Chemical Substances Integrins ; Phosphatidylserines ; Receptors, Virus
    Language English
    Publishing date 2019-05-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 605722-6
    ISSN 1938-3673 ; 0741-5400
    ISSN (online) 1938-3673
    ISSN 0741-5400
    DOI 10.1002/JLB.MR1118-460R
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Immature neutrophil signature associated with the sexual dimorphism of systemic juvenile idiopathic arthritis.

    Prada-Medina, Cesar Augusto / Peron, Jean Pierre Schatzmann / Nakaya, Helder I

    Journal of leukocyte biology

    2020  Volume 108, Issue 4, Page(s) 1319–1327

    Abstract: Juvenile idiopathic arthritis (JIA) is a group of inflammatory conditions of unknown etiology whose incidence is sex dependent. Although several studies have attempted to identify JIA-related gene signatures, none have systematically assessed the impact ... ...

    Abstract Juvenile idiopathic arthritis (JIA) is a group of inflammatory conditions of unknown etiology whose incidence is sex dependent. Although several studies have attempted to identify JIA-related gene signatures, none have systematically assessed the impact of sex on the whole blood transcriptomes of JIA patients. By analyzing over 400 unique pediatric gene expression profiles, we characterized the sexual differences in leukocyte composition of systemic JIA patients and identified sex-specific gene signatures that were related to immature neutrophils. Female systemic JIA patients presented higher activation of immature neutrophil-related genes compared to males, and these genes were associated with the response to IL-1 receptor blockade treatment. Also, we found that this immature neutrophil signature is sexually dimorphic across human lifespan and in adults with rheumatoid arthritis and asthma. These results suggest that neutrophil maturation is sexually dimorphic in rheumatic inflammation, and that this may impact disease progression and treatment.
    MeSH term(s) Adolescent ; Adult ; Arthritis, Juvenile/immunology ; Arthritis, Juvenile/pathology ; Child ; Databases, Nucleic Acid ; Female ; Gene Expression Regulation/immunology ; Humans ; Male ; Neutrophils/immunology ; Neutrophils/pathology ; Sex Characteristics ; Transcriptome
    Language English
    Publishing date 2020-08-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605722-6
    ISSN 1938-3673 ; 0741-5400
    ISSN (online) 1938-3673
    ISSN 0741-5400
    DOI 10.1002/JLB.6MA0720-015RR
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Unraveling the Link Between Mitochondrial Dynamics and Neuroinflammation.

    de Oliveira, Lilian Gomes / Angelo, Yan de Souza / Iglesias, Antonio H / Peron, Jean Pierre Schatzmann

    Frontiers in immunology

    2021  Volume 12, Page(s) 624919

    Abstract: Neuroinflammatory and neurodegenerative diseases are a major public health problem worldwide, especially with the increase of life-expectancy observed during the last decades. For many of these diseases, we still lack a full understanding of their ... ...

    Abstract Neuroinflammatory and neurodegenerative diseases are a major public health problem worldwide, especially with the increase of life-expectancy observed during the last decades. For many of these diseases, we still lack a full understanding of their etiology and pathophysiology. Nonetheless their association with mitochondrial dysfunction highlights this organelle as an important player during CNS homeostasis and disease. Markers of Parkinson (PD) and Alzheimer (AD) diseases are able to induce innate immune pathways induced by alterations in mitochondrial Ca
    MeSH term(s) Alarmins/metabolism ; Animals ; Brain/immunology ; Brain/metabolism ; Brain/pathology ; Cytokines/metabolism ; Humans ; Inflammation/immunology ; Inflammation/metabolism ; Inflammation/pathology ; Inflammation Mediators/metabolism ; Mitochondria/immunology ; Mitochondria/metabolism ; Mitochondria/pathology ; Mitochondrial Dynamics ; Nerve Degeneration ; Neurodegenerative Diseases/immunology ; Neurodegenerative Diseases/metabolism ; Neurodegenerative Diseases/pathology ; Neuroimmunomodulation
    Chemical Substances Alarmins ; Cytokines ; Inflammation Mediators
    Language English
    Publishing date 2021-03-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2021.624919
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Neurological Complications of the COVID-19 Pandemic: What Have We Got So Far?

    Bandeira, Isabelle Pastor / Schlindwein, Marco Antônio Machado / Breis, Leticia Caroline / Peron, Jean Pierre Schatzmann / Gonçalves, Marcus Vinícius Magno

    Advances in experimental medicine and biology

    2021  Volume 1321, Page(s) 21–31

    Abstract: The recently emerged coronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causal agent of COVID-19, is the newest threat to human health. It has already infected more than 54.5 million people worldwide, currently leading to ...

    Abstract The recently emerged coronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causal agent of COVID-19, is the newest threat to human health. It has already infected more than 54.5 million people worldwide, currently leading to more than 1.3 million deaths. Although it causes a mild flu-like disease in most patients, lethality may increase to more than 20% in elderly subjects, especially in those with comorbidities, like hypertension, diabetes, or lung and cardiac disease, and the mechanisms are still elusive. Common symptoms at the onset of illness are fever, cough, myalgia or fatigue, headache, and diarrhea or constipation. Interestingly, respiratory viruses have also placed themselves as relevant agents for central nervous system (CNS) pathologies. Conversely, SARS-CoV-2 has already been detected in the cerebrospinal fluid. Here, we discuss several clinical features related to CNS infection during COVID-19. Patients may progress from headaches and migraines to encephalitis, stroke, and seizures with leptomeningitis. However, the pathway used by the virus to reach the brain is still unknown. It may infect the olfactory bulb by retrograde neuronal transportation from olfactory epithelium, or it could be transported by the blood. Either way, neurological complications of COVID-19 add greatly to the complex pathophysiology of the disease. Neurological signs and symptoms must alert physicians not only to worst outcomes but also to future possible degenerative diseases.
    MeSH term(s) Aged ; COVID-19 ; Coronavirus Infections/epidemiology ; Humans ; Nervous System Diseases/epidemiology ; Pandemics ; SARS-CoV-2
    Language English
    Publishing date 2021-03-03
    Publishing country United States
    Document type Journal Article
    ISSN 2214-8019 ; 0065-2598
    ISSN (online) 2214-8019
    ISSN 0065-2598
    DOI 10.1007/978-3-030-59261-5_2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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