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1.
Arq. bras. med. vet. zootec ; 61(3): 752-754, jun. 2009. tab
Article in English | LILACS | ID: lil-519472

ABSTRACT

A ocorrência da infecção por coronavírus felino (FCoV), herpesvírus felino tipo 1 (FHV-1), calicivírus felino (FCV) e parvovírus felino (FPV) foi investigada mediante a detecção de anticorpos no soro de 97 gatos domésticos de Pelotas, RS, pelo teste de soro-neutralização. Entre os animais estudados, 51 não eram vacinados, 11 haviam sido vacinados contra FHV-1, FCV e FPV com pelo menos uma dose, e 35 tinham histórico de vacinação desconhecido. Foram detectados anticorpos para o FCoV em 75,2% (73/97) dos gatos. Anticorpos contra o FHV-1 estavam presentes em 38,1% (37/97): 73% (8/11) dos gatos vacinados, 39,2% (20/51) dos não vacinados e 25,7% (9/35) dos gatos com histórico de vacinação desconhecido. Anticorpos para o FCV estavam presentes em 56,7% (55/97): 81,8% (9/11) dos gatos vacinados, 52,9% (27/51) dos não vacinados, e 54,3% (19/35) dos gatos com histórico de vacinação desconhecido. Para o FPV, havia anticorpos em 69,1% (67/97): 100% (11/11) dos vacinados, 66,6% (34/51) dos não vacinados e 62,8% (22/35) dos gatos com histórico de vacinação desconhecido. Os resultados sugerem alta exposição ao FCoV, FHV-1, FCV e FPV na população de gatos na área estudada.


Subject(s)
Animals , Male , Female , Antibodies, Viral/isolation & purification , Antibodies, Viral/blood , Calicivirus, Feline/immunology , Coronavirus, Feline/immunology , Cats/immunology , Herpesviridae/immunology , Parvovirus/immunology
2.
Periodontia ; 19(2): 38-44, 2009. tab
Article in Portuguese | LILACS, BBO | ID: lil-576685

ABSTRACT

Periodontite é uma doença multifatorial com diversos padrões clínicos não precisamente explicados pelo papel etiológico de bactérias. Herpesvírus têm sido encontrados em locais afetados por periodontite, pela PCR. Sabe-se que os herpesvírus afetam a regulação imune; assim, variações nas respostas inflamatória e imune atribuídas a eles podem reduzir a resistência do hospedeiro contra colonização subgengival e multiplicação de patógenos periodontais. Mais investigações experimentais para avaliar a real relação dos efeitos observados em estudos descritivos podem trazer provas causativas e conclusivas dos efeitos específicos dos herpesvírus nas doenças periodontais.


Periodontitis is a multilayered factors disease with diverse clinical features not precisely explained by the etiologic role of bacteria. Herpesviruses have been found in periodontally affected sites by PCR. Herpesviruses are known to exertimmune regulation and thus, variations on inflammatory and immune responses attributed to them may reduce host resistance against subgingival colonization and multiplication of periodontal pathogens. More trials to evaluate whether the effects seen in observational studies are truly related to herpes viruses could bring a causative and conclusive proof for their specific effect in periodontal disease.


Subject(s)
Herpesviridae/immunology , Periodontitis/etiology , Cytomegalovirus , Simplexvirus
3.
Braz. j. med. biol. res ; 38(4): 509-522, Apr. 2005. tab
Article in English | LILACS | ID: lil-398189

ABSTRACT

Vaccine approaches to infectious diseases are widely applied and appreciated. Amongst them, vectors based on recombinant viruses have shown great promise and play an important role in the development of new vaccines. Many viruses have been investigated for their ability to express proteins from foreign pathogens and induce specific immunological responses against these antigens in vivo. Generally, gene-based vaccines can stimulate potent humoral and cellular immune responses and viral vectors might be an effective strategy for both the delivery of antigen-encoding genes and the facilitation and enhancement of antigen presentation. In order to be utilized as a vaccine carrier, the ideal viral vector should be safe and enable efficient presentation of required pathogen-specific antigens to the immune system. It should also exhibit low intrinsic immunogenicity to allow for its re-administration in order to boost relevant specific immune responses. Furthermore, the vector system must meet criteria that enable its production on a large-scale basis. Several viral vaccine vectors have thus emerged to date, all of them having relative advantages and limits depending on the proposed application, and thus far none of them have proven to be ideal vaccine carriers. In this review we describe the potential, as well as some of the foreseeable obstacles associated with viral vaccine vectors and their use in preventive medicine.


Subject(s)
Humans , Genetic Vectors/immunology , Vaccines, DNA/immunology , Viral Vaccines/immunology , Virus Diseases/prevention & control , Adenoviridae/immunology , Alphavirus/immunology , Herpesviridae/immunology , Poliovirus/immunology , Poxviridae/immunology , Recombination, Genetic , Viral Vaccines/genetics , Virus Diseases/genetics , Virus Diseases/immunology
4.
Rev. méd. Hosp. Gen. Méx ; 61(4): 226-40, oct.-dic. 1998. tab, ilus, graf
Article in English | LILACS | ID: lil-248093

ABSTRACT

Los virus linfotrópicos herpes humanos ejercen un efecto dual en el sistema inmune: estimulan como antígenos e interfieren funcionalmente debido a sulinfotropismo. En consecuencias, pueden resultar diferentes enfermedades, o verse éstas influenciadas en su evolución, posterior a la reactivación o persistencia de dichos virus. Los efectos son modulados por la edad del afectado y mediante la actividad variable del sistema de defensa humano. Los patrones de enfermedad asociados con estos virus van desde aproliferativos (aplásticos) hasta proliferativos (neoplásicos) y desórdenes autoinmunes. Esta revisión resume los conceptos e hipótesis actuales


Subject(s)
Humans , Autoimmune Diseases/virology , Cytokines , Herpesvirus 4, Human , Herpesviridae Infections/immunology , Herpesviridae Infections/epidemiology , Herpesviridae Infections/virology , Herpesviridae/immunology , Herpesviridae/pathogenicity , Lymphoma/virology
5.
Rev. méd. Hosp. Gen. Méx ; 61(4): 262-7, oct.-dic. 1998. graf, tab, ilus
Article in English | LILACS | ID: lil-248095

ABSTRACT

Se aislaron blastos atípicos de la sangre periférica de un niño con síndrome de Wiskott-Aldrich y autotransplante de médula ósea. Las células fueron inmunotipificadas como monoblastos y crecieron en cultivo tisular en doble tiempo de 3 a 4 días. Las células aisladas originalmente y los cultivos iniciales, contenían antígenos tanto del virus herpes humano-6 (HHV-6) como del virus herpes humano-7 (HHV-7) y ácido desoxirribonucleico (ADN). Lo que disminuyó con la desdiferenciación celular en los cultivos subsecuentes. Los sobrenadantes de los cultivos celulares contenían cantidades moderadas de interleucina-6 (IL-6) y marcados niveles de factor estimulante de colonias-granulocito-monocítico (GM-CSF). Se discutió el caso desde el punto de vista de una posible co-patogénesis viral


Subject(s)
Humans , Male , Infant , Herpesviridae/immunology , Antigens, Viral , Cells, Cultured/immunology , Cells, Cultured/virology , Wiskott-Aldrich Syndrome/immunology , Wiskott-Aldrich Syndrome/blood , Wiskott-Aldrich Syndrome/virology , Transplantation, Autologous , Bone Marrow Transplantation
6.
Gulf Journal of Dermatology and Venereology [The]. 1998; 5 (1): 24-29
in English | IMEMR | ID: emr-47992

ABSTRACT

In this study, the Immunoconcepts EA indirect enzyme antibody technique [colorzyme] was used not only for detection of IgG antibodies but also for quantitative detection of IgM antibodies to Herpes Simplex Virus [HSV], Cytomegalovirus [CMV] and Epstein Barr Virus [EBV] to diagnose recent active infection. Reference reactive and negative antisera and randomly collected human sera were tested by complement fixation test [CFT] against HSV antigens and tested also by immunofluorescent [IF] and colorzyme Immunoconcepts EA tests. All sera that were negative to HSV, CMV and EBV antibodies by CFT were negative by IF and colorzyme EA tests. All antibody positive sera and reference positive antisera were also positive by IF and colorzyme EA tests with slight variation in antibody titres between CFT and colorzyme test results. Human sera which were negative or IgM positive to HSV, CMV and EBV by ELISA as well as negative and positive reference sera from different diagnostic kits were retested by IF and colorzyme EA for IgM. Antiviral reactivity results were concordant by the three tests. All incubations in colorzyme test were at room temperature and only an ordinary microscope used in IF test or plate washers and readers needed for ELISA test. The colorzyme immunoconcepts is a simple, rapid and sensitive technical for viral diagnosis and can be used in any private laboratory


Subject(s)
Humans , Herpesviridae/immunology , Antibody Formation , Immunoglobulin G/blood , Immunoglobulin M/blood , Serologic Tests , Immunologic Techniques , Complement Fixation Tests , Enzyme-Linked Immunosorbent Assay , Fluorescent Antibody Technique
7.
Rev. cuba. med. trop ; 48(1): 56-8, ene.-abr. 1996. tab
Article in Spanish | LILACS | ID: lil-185383

ABSTRACT

Se estudiaron 20 pares de sueros provenientes del Sistema de Vigilancia Seroepidemiologica Nacional de la vacuna triple viral que llegaron al laboratorio con el diagnostico de rash febril. Mediante la tecnica de inhibicion de la hemaglutinacion se observo una respuesta anormal de anticuerpos, tanto a rubeola como a sarampion, manifiesta por una caida del titulo de anticuerpos a una o ambas entidades o a una de ellas con seroconversion a la otra. Con el objetivo de definir la respuesta de anticuerpos a la familia Herpesviridae (HSV, EBV, CMV, VZV), se encontro el 80 por ciento de la respuesta a estos virus. Los resultados se presentan y se discuten


Subject(s)
Humans , Infant , Child, Preschool , Antibodies, Viral , Herpesviridae/immunology , Immune Sera/analysis , Immunity, Cellular , Hemagglutination Inhibition Tests , Rubella virus/immunology , Measles virus/immunology
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