LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 7 of total 7

Search options

  1. Article ; Online: Chlamydia psittaci Screening of Animal Workers from Argentina Exposed to Carrier Birds.

    Favier, Patricio / Wiemeyer, Guillermo M / Arias, Maite B / Lara, Claudia S / Vilar, Gabriela / Crivelli, Ana J / Ludvik, Herman K / Ardiles, María I / Teijeiro, María L / Madariaga, María J / Rolón, María J / Cadario, María E

    EcoHealth

    2024  

    Abstract: Different syndromes are involved in human psittacosis (flu-like syndrome, atypical pneumonia up to lacrimal gland lymphoma). Diagnostic methods include serology, culture, and PCR. The rate of Chlamydia psittaci (Cp) positive tests among exposed workers ... ...

    Abstract Different syndromes are involved in human psittacosis (flu-like syndrome, atypical pneumonia up to lacrimal gland lymphoma). Diagnostic methods include serology, culture, and PCR. The rate of Chlamydia psittaci (Cp) positive tests among exposed workers is still unknown. Our study aimed to assess the rate of positive tests among workers who have contact with carrier birds in natural reserves from Buenos Aires, Argentina. Secondary aims were to analyze risk factors linked to these outcomes and the occurrence of signs that suggest psittacosis. Nasopharyngeal swabs and serum pairs were collected from employees who had interacted with confirmed carrier birds. Those with detectable DNA of Cp and/or anti-Chlamydia spp. antibody baseline titer ≥ 160 mUI/ml, or at least quadruplicating, were considered positive. Activities performed with or near birds, personal protective equipment use, and previous chronic conditions were assessed. Possible Cp-related pathologies were evaluated during follow-up. A total of 63 exposed workers (71.4% men) with a median age of 35.7 years (IQR 26-39) were evaluated to detect 28.6% positives. Respiratory chronic conditions were the unique factor associated with positive tests (OR 5.2 [1.5-18.5] p < .05). Surprisingly, about a third of the workers resulted positive and all responded to medical treatment, none developing an acute atypical pneumonia syndrome associated with classical presentation of psittacosis. Active testing for early diagnosis and proper treatment in zoological workers exposed to carrier or potentially carrier birds is strongly suggested as part of zoonotic diseases preventive measures.
    Language English
    Publishing date 2024-04-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2164327-1
    ISSN 1612-9210 ; 1612-9202
    ISSN (online) 1612-9210
    ISSN 1612-9202
    DOI 10.1007/s10393-024-01683-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Hemophagocytic lymphohistiocytosis secondary to AIDS-related histoplasmosis and visceral leishmaniasis.

    Tomaino, María V / Barletta, José Ae / Andreani, Mariana / Sisto, Alicia / Abusamra, Lorena / Guelfand, Liliana / Rolón, María J

    International journal of STD & AIDS

    2022  Volume 33, Issue 9, Page(s) 873–876

    Abstract: Hemophagocytic Lymphohistiocytosis (HLH) is a rare, highly aggressive syndrome involving dysregulated immune response. Most cases are secondary to underlying diseases including infections, autoimmune disorders and malignancies. The burden of disease of ... ...

    Abstract Hemophagocytic Lymphohistiocytosis (HLH) is a rare, highly aggressive syndrome involving dysregulated immune response. Most cases are secondary to underlying diseases including infections, autoimmune disorders and malignancies. The burden of disease of histoplasmosis and leishmaniosis associated with advanced HIV is still significant in low-and-middle income countries (LMIC). We present a case of histoplasmosis and leishmaniasis associated HLH in a man with an AIDS diagnosis.
    MeSH term(s) Acquired Immunodeficiency Syndrome/complications ; Histoplasmosis/complications ; Histoplasmosis/diagnosis ; Histoplasmosis/drug therapy ; Humans ; Leishmaniasis, Visceral/complications ; Leishmaniasis, Visceral/diagnosis ; Leishmaniasis, Visceral/drug therapy ; Lymphohistiocytosis, Hemophagocytic/diagnosis ; Lymphohistiocytosis, Hemophagocytic/etiology ; Male
    Language English
    Publishing date 2022-07-01
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 1018089-8
    ISSN 1758-1052 ; 0956-4624
    ISSN (online) 1758-1052
    ISSN 0956-4624
    DOI 10.1177/09564624221110986
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Liver cirrhosis in HIV/HCV-coinfected individuals is related to NK cell dysfunction and exhaustion, but not to an impaired NK cell modulation by CD4

    Polo, María L / Ghiglione, Yanina A / Salido, Jimena P / Urioste, Alejandra / Poblete, Gabriela / Sisto, Alicia E / Martinez, Ana / Rolón, María J / Ojeda, Diego S / Cahn, Pedro E / Turk, Gabriela J / Laufer, Natalia L

    Journal of the International AIDS Society

    2019  Volume 22, Issue 9, Page(s) e25375

    Abstract: Introduction: HIV worsens HCV-related liver disease by accelerating fibrosis progression; however, progression rates are extremely variable among HIV/HCV-coinfected individuals. NK cells are associated with modulation of liver fibrosis and are ... ...

    Abstract Introduction: HIV worsens HCV-related liver disease by accelerating fibrosis progression; however, progression rates are extremely variable among HIV/HCV-coinfected individuals. NK cells are associated with modulation of liver fibrosis and are profoundly altered during HCV and HIV infections. CD4
    Methods: Thirty-four HIV/HCV-coinfected individuals with minimal (n = 16) and advanced (n = 18) fibrosis (METAVIR F0/F1 and F4 scores respectively) and 20 healthy volunteers were enrolled. PBMC were obtained from peripheral blood samples and NK and CD4
    Results: When comparing to NK cells from individuals with minimal fibrosis, degranulation and cytokine secretion by NK cells from subjects with F4 scores was significantly impaired, while PD-1 expression was augmented. On the one hand, neither the expression of activation markers nor IL-2 secretion was distinctly induced in CD4
    Conclusions: Low levels of NK and CD4
    MeSH term(s) Adult ; Aged ; CD4-Positive T-Lymphocytes/immunology ; Coinfection/complications ; Coinfection/immunology ; Coinfection/virology ; Female ; HIV Infections/complications ; HIV Infections/immunology ; HIV Infections/virology ; HIV-1/physiology ; Hepacivirus/physiology ; Hepatitis C/complications ; Hepatitis C/immunology ; Hepatitis C/virology ; Humans ; Killer Cells, Natural/immunology ; Leukocytes, Mononuclear/immunology ; Liver Cirrhosis/complications ; Liver Cirrhosis/immunology ; Liver Cirrhosis/virology ; Lymphocyte Activation ; Male ; Middle Aged ; Young Adult
    Language English
    Publishing date 2019-09-18
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2467110-1
    ISSN 1758-2652 ; 1758-2652
    ISSN (online) 1758-2652
    ISSN 1758-2652
    DOI 10.1002/jia2.25375
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Blood neutrophils from children with COVID-19 exhibit both inflammatory and anti-inflammatory markers.

    Seery, Vanesa / Raiden, Silvina C / Algieri, Silvia C / Grisolía, Nicolás A / Filippo, Daniela / De Carli, Norberto / Di Lalla, Sandra / Cairoli, Héctor / Chiolo, María J / Meregalli, Claudia N / Gimenez, Lorena I / Gregorio, Gabriela / Sarli, Mariam / Alcalde, Ana L / Davenport, Carolina / Bruera, María J / Simaz, Nancy / Pérez, Mariela F / Nivela, Valeria /
    Bayle, Carola / Tuccillo, Patricia / Agosta, María T / Pérez, Hernán / Villa Nova, Susana / Suárez, Patricia / Takata, Eugenia M / García, Mariela / Lattner, Jorge / Rolón, María J / Coll, Patricia / Sananez, Inés / Holgado, María P / Ferrero, Fernando / Geffner, Jorge / Arruvito, Lourdes

    EBioMedicine

    2021  Volume 67, Page(s) 103357

    Abstract: Background: Perhaps reflecting that children with COVID-19 rarely exhibit severe respiratory symptoms and often remain asymptomatic, little attention has been paid to explore the immune response in pediatric COVID-19. Here, we analyzed the phenotype and ...

    Abstract Background: Perhaps reflecting that children with COVID-19 rarely exhibit severe respiratory symptoms and often remain asymptomatic, little attention has been paid to explore the immune response in pediatric COVID-19. Here, we analyzed the phenotype and function of circulating neutrophils from children with COVID-19.
    Methods: An observational study including 182 children with COVID-19, 21 children with multisystem inflammatory syndrome (MIS-C), and 40 healthy children was performed in Buenos Aires, Argentina. Neutrophil phenotype was analyzed by flow cytometry in blood samples. Cytokine production, plasma levels of IgG antibodies directed to the spike protein of SARS-CoV-2 and citrullinated histone H3 were measured by ELISA. Cell-free DNA was quantified by fluorometry.
    Findings: Compared with healthy controls, neutrophils from children with COVID-19 showed a lower expression of CD11b, CD66b, and L-selectin but a higher expression of the activation markers HLA-DR, CD64 and PECAM-1 and the inhibitory receptors LAIR-1 and PD-L1. No differences in the production of cytokines and NETs were observed. Interestingly, the expression of CD64 in neutrophils and the serum concentration of IgG antibodies directed to the spike protein of SARS-CoV-2 distinguished asymptomatic from mild and moderate COVID-19.
    Interpretation: Acute lung injury is a prominent feature of severe COVID-19 in adults. A low expression of adhesion molecules together with a high expression of inhibitory receptors in neutrophils from children with COVID-19 might prevent tissue infiltration by neutrophils preserving lung function.
    Funding: This study was supported by the Ministry of Science and Technology (National Agency for Scientific and Technological Promotion, IP-COVID-19-0277 and PMO BID PICT 2018-2548), and University of Buenos Aires from Argentina (20020170100573BA).
    MeSH term(s) Antibodies, Viral/blood ; Argentina ; Biomarkers/blood ; COVID-19/blood ; COVID-19/immunology ; Case-Control Studies ; Child ; Child, Preschool ; Cytokines/blood ; Female ; Flow Cytometry ; Humans ; Immunoglobulin G/blood ; Infant ; Male ; Neutrophils/immunology ; SARS-CoV-2/immunology ; Spike Glycoprotein, Coronavirus/immunology ; Systemic Inflammatory Response Syndrome/blood ; Systemic Inflammatory Response Syndrome/immunology
    Chemical Substances Antibodies, Viral ; Biomarkers ; Cytokines ; Immunoglobulin G ; Spike Glycoprotein, Coronavirus ; spike protein, SARS-CoV-2
    Language English
    Publishing date 2021-05-09
    Publishing country Netherlands
    Document type Journal Article ; Observational Study
    ZDB-ID 2851331-9
    ISSN 2352-3964
    ISSN (online) 2352-3964
    DOI 10.1016/j.ebiom.2021.103357
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: Primer aislamiento en Argentina de Staphylococcus aureus resistente a la meticilina adquirido en la comunidad con sensibilidad intermedia a la vancomicina y no sensibilidad a la daptomicina

    Errecalde, Laura / Ceriana, Paola / Gagetti, Paula / Erbín, Mariana / Duarte, Andrea / Rolón, María J / Cuatz, Daniel / Corso, Alejandra / Kaufman, Sara

    Asociación Argentina de Microbiología Revista argentina microbiología. 2013, v. 42, no. 2

    2013  

    Abstract: We report the first case in Argentina of community-acquired methicillin-resistant Staphylococcus aureus with intermediate susceptibility to vancomycin and nonsusceptibility to daptomycin.Case report: A male patient with a history of chronic renal failure ...

    Abstract We report the first case in Argentina of community-acquired methicillin-resistant Staphylococcus aureus with intermediate susceptibility to vancomycin and nonsusceptibility to daptomycin.Case report: A male patient with a history of chronic renal failure on hemodialysis and hip fracture osteosynthesis was admitted to hospital for persistent febrile syndrome following the displacement of the prosthesis by trauma. Blood cultures grew communityacquired methicillin-resistant Staphylococcus aureus. During treatment with vancomycin and daptomycin, a gradual increase in vancomycin MIC of 1 μg/ml (VSSA) to 2μg/ml (h-VISA) and 4μg/ml (VISA) was observed, as well as the emergence of non-susceptibility to daptomycin (MIC=4μg/ml). By suspending vancomycin and daptomycin, the strain reversed to the susceptible phenotype to both drugs. It is mandatory to evaluate by MIC the susceptibility to vancomycin and daptomycin during treatment when these drugs are used as therapy.
    Keywords blood ; daptomycin ; fracture fixation ; hemodialysis ; hip fractures ; hospitals ; males ; methicillin-resistant Staphylococcus aureus ; patients ; phenotype ; prostheses ; renal failure ; vancomycin ; Argentina
    Language English
    Size p. 99-103.
    Publishing place Elsevier España
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 731952-6
    ISSN 0325-7541
    ISSN 0325-7541
    DOI 10.1016/S0325-7541(13)70007-5
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article ; Online: A poor and delayed anti-SARS-CoV2 IgG response is associated to severe COVID-19 in children.

    Sananez, Inés / Raiden, Silvina C / Algieri, Silvia C / Uranga, Macarena / Grisolía, Nicolás A / Filippo, Daniela / De Carli, Norberto / Lalla, Sandra Di / Cairoli, Héctor / Chiolo, María J / Meregalli, Claudia N / Cohen, Emilia / Mosquera, Graciela / Marcó Del Pont, María / Giménez, Lorena I / Gregorio, Gabriela / Sarli, Mariam / Alcalde, Ana L / Davenport, Carolina /
    Bruera, María J / Simaz, Nancy / Pérez, Mariela F / Nivela, Valeria / Bayle, Carola / Alvarez, Laura / Revetria, María / Tuccillo, Patricia / Agosta, María T / Pérez, Hernán / Nova, Susana Villa / Suárez, Patricia / Takata, Eugenia M / García, Mariela / Lattner, Jorge / Rolón, María J / Coll, Patricia / Salvatori, Melina / Piccardo, Claudio / Russo, Constanza / Varese, Augusto / Seery, Vanesa / Holgado, María P / Polo, María L / Ceballos, Ana / Nuñez, Myriam / Penedo, Juan Martín Gómez / Ferrero, Fernando / Geffner, Jorge / Arruvito, Lourdes

    EBioMedicine

    2021  Volume 72, Page(s) 103615

    Abstract: Background: Most children and youth develop mild or asymptomatic disease during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, a very small number of patients suffer severe Coronavirus induced disease 2019 (COVID-19). ... ...

    Abstract Background: Most children and youth develop mild or asymptomatic disease during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, a very small number of patients suffer severe Coronavirus induced disease 2019 (COVID-19). The reasons underlying these different outcomes remain unknown.
    Methods: We analyzed three different cohorts: children with acute infection (n=550), convalescent children (n=138), and MIS-C (multisystem inflammatory syndrome in children, n=42). IgG and IgM antibodies to the spike protein of SARS-CoV-2, serum-neutralizing activity, plasma cytokine levels, and the frequency of circulating Follicular T helper cells (cTfh) and plasmablasts were analyzed by conventional methods.
    Findings: Fifty-eight percent of the children in the acute phase of infection had no detectable antibodies at the time of sampling while a seronegative status was found in 25% and 12% of convalescent and MIS-C children, respectively. When children in the acute phase of the infection were stratified according disease severity, we found that contrasting with the response of children with asymptomatic, mild and moderate disease, children with severe COVID-19 did not develop any detectable response. A defective antibody response was also observed in the convalescent cohort for children with severe disease at the time of admission. This poor antibody response was associated to both, a low frequency of cTfh and a high plasma concentration of inflammatory cytokines.
    Interpretation: A weak and delayed kinetic of antibody response to SARS-CoV-2 together with a systemic pro-inflammatory profile characterize pediatric severe COVID-19. Because comorbidities are highly prevalent in children with severe COVID-19, further studies are needed to clarify their contribution in the weak antibody response observed in severe disease.
    Funding: National Agency for Scientific and Technological Promotion from Argentina (IP-COVID-19-0277 and PMO-BID-PICT2018-2548).
    MeSH term(s) Antibodies, Viral/blood ; Antibody Formation ; Argentina ; COVID-19/blood ; COVID-19/complications ; COVID-19/immunology ; Child ; Child, Preschool ; Cytokines/blood ; Female ; Humans ; Immunoglobulin G/blood ; Immunoglobulin M/blood ; Infant ; Male ; SARS-CoV-2/immunology ; Systemic Inflammatory Response Syndrome/blood ; Systemic Inflammatory Response Syndrome/immunology
    Chemical Substances Antibodies, Viral ; Cytokines ; Immunoglobulin G ; Immunoglobulin M
    Language English
    Publishing date 2021-10-11
    Publishing country Netherlands
    Document type Journal Article ; Observational Study
    ZDB-ID 2851331-9
    ISSN 2352-3964
    ISSN (online) 2352-3964
    DOI 10.1016/j.ebiom.2021.103615
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Lower respiratory tract infections among human immunodeficiency virus-exposed, uninfected infants.

    Mussi-Pinhata, Marisa M / Motta, Fabrizio / Freimanis-Hance, Laura / de Souza, Ricardo / Szyld, Edgardo / Succi, Regina C M / Christie, Celia D C / Rolon, Maria J / Ceriotto, Mariana / Read, Jennifer S

    International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

    2010  Volume 14 Suppl 3, Page(s) e176–82

    Abstract: Objectives: To evaluate whether maternal HIV disease severity during pregnancy is associated with an increased likelihood of lower respiratory tract infections (LRTIs) in HIV-exposed, uninfected infants.: Methods: HIV-exposed, uninfected, singleton, ... ...

    Abstract Objectives: To evaluate whether maternal HIV disease severity during pregnancy is associated with an increased likelihood of lower respiratory tract infections (LRTIs) in HIV-exposed, uninfected infants.
    Methods: HIV-exposed, uninfected, singleton, term infants enrolled in the NISDI Perinatal Study, with birth weight >2500g were followed from birth until 6 months of age. LRTI diagnoses, hospitalizations, and associated factors were assessed.
    Results: Of 547 infants, 103 (18.8%) experienced 116 episodes of LRTI (incidence=0.84 LRTIs/100 child-weeks). Most (81%) episodes were bronchiolitis. Forty-nine (9.0%) infants were hospitalized at least once with an LRTI. There were 53 hospitalizations (45.7%) for 116 LRTI episodes. None of these infants were breastfed. The odds of LRTI in infants whose mothers had CD4% <14 at enrollment were 4.4 times those of infants whose mothers had CD4% ≥29 (p=0.003). The odds of LRTI in infants with a CD4+ count (cells/mm(3)) <750 at hospital discharge were 16.0 times those of infants with CD4+ ≥750 (p=0.002). Maternal CD4+ decline and infant hemoglobin at the 6-12 week visit were associated with infant LRTIs after 6-12 weeks and before 6 months of age.
    Conclusions: Acute bronchiolitis is common and frequently severe among HIV-exposed, uninfected infants aged 6 months or less. Lower maternal and infant CD4+ values were associated with a higher risk of infant LRTIs. Further understanding of the immunological mechanisms of severe LRTIs is needed.
    MeSH term(s) Adult ; Argentina ; Brazil ; Bronchiolitis/etiology ; Bronchiolitis/immunology ; CD4 Lymphocyte Count ; Cohort Studies ; Female ; HIV Infections/immunology ; HIV Infections/transmission ; Humans ; Infant ; Infant, Newborn ; Infectious Disease Transmission, Vertical ; Male ; Pregnancy ; Pregnancy Complications, Infectious/immunology ; Prenatal Exposure Delayed Effects/immunology ; Prospective Studies ; Respiratory Tract Infections/etiology ; Respiratory Tract Infections/immunology ; Risk Factors
    Language English
    Publishing date 2010-05-08
    Publishing country Canada
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1331197-9
    ISSN 1878-3511 ; 1201-9712
    ISSN (online) 1878-3511
    ISSN 1201-9712
    DOI 10.1016/j.ijid.2010.01.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top