Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Luciane Teresinha Lovato is active.

Publication


Featured researches published by Luciane Teresinha Lovato.


Veterinary Microbiology | 2009

In vitro activity of terbinafine associated to amphotericin B, fluvastatin, rifampicin, metronidazole and ibuprofen against Pythium insidiosum.

Ayrton Sydnei Cavalheiro; Régis Adriel Zanette; Tatiana Spader; Luciane Teresinha Lovato; Maria Isabel de Azevedo; Sônia de Avila Botton; Sydney Hartz Alves; Janio Morais Santurio

We evaluated the in vitro activities of terbinafine alone and in combination with amphotericin B, fluvastatin, rifampicin, metronidazole or ibuprofen against 17 clinical isolates of Pythium insidiosum. The assays were based on technique M38-A2, as well as the checkerboard microdilution method. The main synergism observed was by combination of terbinafine plus amphotericin B (41.18%). Antagonisms were observed in combinations of terbinafine with fluvastatin (35.30%) or rifampicin (5.88%).


Ciencia Rural | 2011

Atividade antiviral do extrato de própolis contra o calicivírus felino, adenovírus canino 2 e vírus da diarréia viral bovina

Ana Paula Cueto; Sydney Hartz Alves; Marciele Ribas Pilau; Rudi Weiblen; Thaís Felli Kubiça; Luciane Teresinha Lovato

Propolis is a resinous substance produced by bees for which several biological activities have been attributed. In this article, the antiviral activity of two propolis extracts was tested against bovine viral diarrhea virus (BVDV), canine adenovirus type 2 (CAV-2), and feline calicivirus (FCV). One of the extracts was obtained by ethanolic extraction of propolis from the Santa Maria (RS) region, while the other was bought from a Minas Gerais industry. The high efficiency liquid cromatography (HPLC) analysis detected the presence of some flavonoids like rutin, quercetin, and gallic acid. The MTT test was applied in order to detect the citotoxicity and also the antiviral activity. Both extracts showed antiviral activity against BVDV and CAV-2 when incubated with the cell cultures before viral inoculation. The extracts were less effective against FCV comparing to the results for the other viruses and, the antiviral activity was observed only when the propolis was present after virus inoculation The extract obtained in the lab showed the highest selectivity index (SI= CC50/ EC50). Thus, propolis showed antiviral activity against three different viruses, making it a target for the development of new natural compounds with antiviral activity.


Pesquisa Veterinaria Brasileira | 2010

Microbiota cloacal aeróbia de cracídeos cativos no Rio Grande do Sul e sua susceptibilidade a antimicrobianos

Helton Fernandes dos Santos; Maristela Lovato Flôres; Valéria Maria Lara; Mariana Sá e Silva; Luciano de Oliveira Battisti; Luciane Teresinha Lovato

Cracids are wildlife Galliformes which inhabits the Americas tropical forests. Fifty one cloacal swabs were collected from 10 different species of captive cracids from the Rio Grande do Sul State during 2007. The cloacal swab samples were submitted to bacterial isolation, identification and, subsequently; antimicrobial susceptibility testing. Ninety three bacterial isolates were obtained from the cracid population examined. The most prevalent among the isolates were Escherichia coli, and bacteria from the Staphylococcus and Streptococcus genera. All samples tested in this study were negative for Salmonella spp. The antimicrobial susceptibility tests showed that none of the 93 strains presented resistance to the antimicrobial imipinem. In addition, the lower percentages of resistance were observed against cloranfenicol and ciprofloxacine. The bacteria genus and species with the highest percentage of resistance to the different antimicrobials examined were E. coli, Serratia marcescens, Staphylococcus spp. and Streptococcus spp. In conclusion, the data presented in this article demonstrate that the cloacal microbiota of the reported cracid population is composed of several bacterial genera and species and multi-drug resistance may be a problem for the future, since some strains showed elevated percentage of resistance against several different antimicrobials.


Brazilian Journal of Microbiology | 2012

Isolation and identification of feline calicivirus and feline herpesvirus in Southern Brazil

Andréia Henzel; Mário Celso Sperotto Brum; Claudia Lautert; Mathias Martins; Luciane Teresinha Lovato; Rudi Weiblen

Feline calicivirus (FCV) and feline herpesvirus type 1 (FHV-1) are the two primary causes of upper respiratory tract disease in cats. The aim of this study was to demonstrate the distribution of FCV and FHV-1 among the feline population of several counties in Rio Grande do Sul State, Brazil. To this end, conjunctival and nasal swabs were collected from 302 cats from different locations, including households, breeding catteries, veterinary clinics, animal hospitals and experimental research facilities. The samples were collected between July 2006 to June 2009. The virus isolation was performed in CRFK cells and, subsequently, the identification was confirmed by PCR. FCV, FHV-1, or both were isolated from 55 cats from 28 different locations. FCV alone was isolated from 52.7% (29/55) of the animals that tested positively, FHV-1 alone was isolated from 38.2% (21/55) of the animals that tested positively, and co-infection were detected in 9.1% (5/55) of the animals that tested positively. Virus detection was more prevalent in cats that were less than 1 year old, among animals that shared a living space with other cats, and females. FCV and FHV-1 were isolated from vaccinated cats. In addition, both viruses were isolated from cats that showed no signs of disease. The results suggest that a carrier state is common for both viruses in the evaluated population. A search for other causes of respiratory disease in that population is necessary; and further studies relating to the molecular characterization of viruses and vaccine efficacy are also necessary.


Brazilian Journal of Microbiology | 2014

In vitro inhibition of the bovine viral diarrhoea virus by the essential oil of Ocimum basilicum (basil) and monoterpenes

Thaís Felli Kubiça; Sydney Hartz Alves; Rudi Weiblen; Luciane Teresinha Lovato

The bovine viral diarrhoea virus (BVDV) is suggested as a model for antiviral studies of the hepatitis C virus (HCV). The antiviral activity of the essential oil of Ocimum basilicum and the monoterpenes camphor, thymol and 1,8-cineole against BVDV was investigated. The cytotoxicities of the compounds were measured by the MTT (3-(4.5-dimethylthiazol-2-yl)-2.5-diphenyltetrazolium bromide) test, and the antiviral activities were tested by the plaque reduction assay. The oil or compounds were added to the assay in three different time points: a) pre-treatment of the virus (virucidal assay); b) pre-treatment of the cells; or c) post-treatment of the cells (after virus inoculation). The percentage of plaques inhibition for each compound was determined based on the number of plaques in the viral control. The results were expressed by CC50 (50% cytotoxic concentration), IC50 (inhibitory concentration for 50% of plaques) and SI (selectivity index = CC50/IC50). Camphor (CC50 = 4420.12 μg mL−1) and 1,8-cineole (CC50 = 2996.10 μg mL−1) showed the lowest cytotoxicities and the best antiviral activities (camphor SI = 13.88 and 1,8-cineol SI = 9.05) in the virucidal assay. The higher activities achieved by the monoterpenes in the virucidal assay suggest that these compounds act directly on the viral particle.


Ciencia Rural | 2008

Anticorpos contra vírus em galinhas de terreiro do Estado do Rio Grande do Sul, Brasil

Helton Fernandes dos Santos; Luciane Teresinha Lovato; Maristela Lovato Flôres; Iara Maria Trevisol; Ketty Cristina Mazzutti; Kleitton Adolfo Pan

The backyard poultry are not included in the biosecurity system applied in commercial flocks in Brazil. To investigate the presence of antibodies to specific viral pathogens in this population, blood samples were collected from 867 non-vaccinated birds, from 60 flocks in 22 counties of the Rio Grande do Sul State, Brazil. The samples were tested to detect antibodies against infectious bronchitis virus (IBV), avian reovirus (ARV) and infectious bursal disease virus (IBDV), through the virus neutralization test. Antibodies to IBV were detected in 65% (564/867), against ARV in 21.6% (187/867), and against IBDV in 80.2% (695/867) of the samples. All the flocks had chickens positive to IBV and IBDV antibodies, and 88.3% of them harbored antibodies to ARV. The results show the presence of these viruses in backyard poultry from the central region of the State. It also indicates the need for additional studies aimed to evaluate the real importance of these infections for this type of flocks.


Ciencia Rural | 2009

Anticorpos contra vírus de galinha em cracídeos

Helton Fernandes dos Santos; Maristela Lovato Flôres; Valéria Maria Lara; Iara Maria Trevisol; Luciane Teresinha Lovato

The cracids are wild Galliformes native from the Americas. Fifty one serum samples were collected from individuals of 10 different species of cracids in order to obtain information regarding to the antibody status of different viruses. These birds were kept in shelters and zoos localized in Santa Maria, Soledade, Passo Fundo, Sapucaia, Gravatai, Viamao and Tres Coroas counties, in the Rio Grande do Sul State, Brazil. Neutralizing antibodies were detected in the individuals serum from different species specific referring to infectious bronchitis virus in 5.9% (3/51) of the samples, to avian reovirus in 15.7% (8/51) and, to infectious bursal disease virus in 35.3% (18/51). All samples were negative for fowlpox virus, as measured by IDGA test. The detection of commercial poultry viruses antibodies suggests that cracids could be susceptible to infection by those viruses.


Saúde (Santa Maria) | 2005

PNEUMONIA ASIÁTICA: UMA PEQUENA REVISÃO

Luciane Teresinha Lovato; Mário Celso Sperotto Brum; Helton Fernandes dos Santos

Neste artigo abordam-se alguns aspectos da “SARS” (Severe Acute Respiratory Syndrome) ouPneumonia Asiatica como ficou conhecida no Brasil. A epidemiologia, os sinais clinicos, o diagnostico e as estrategias de tratamento utilizadas para controlar a enfermidade sao aqui revisados deforma resumida. Enfatiza-se a historia natural desta importante doenca infecciosa emergente e seurapido controle atraves da acao conjunta de microbiologistas, epidemiologistas, e clinicos de variospaises. Esta acao nao teria sido possivel sem o conhecimento acumulado ao longo de muitasdecadas de pesquisa basica.


Acta Physiologiae Plantarum | 2013

Antimicrobial and antiviral activity-guided fractionation from Scutia buxifolia Reissek extracts

Aline Augusti Boligon; Thaís Felli Kubiça; Débora Alves Nunes Mario; Thiele Faccim de Brum; Mariana Piana; Rudi Weiblen; Luciane Teresinha Lovato; Sydney Hartz Alves; Roberto Christ Vianna Santos; Camilla Filippi dos Santos Alves; Margareth Linde Athayde


Journal of Applied Biomedicine | 2015

HPLC analysis and antimicrobial, antimycobacterial and antiviral activities of Tabernaemontana catharinensis A. DC

Aline Augusti Boligon; Mariana Piana; Thaís Felli Kubiça; Débora Alves Nunes Mario; Tanise Vendruscolo Dalmolin; Pauline Cordenonsi Bonez; Rudi Weiblen; Luciane Teresinha Lovato; Sydney Hartz Alves; Marli Matiko Anraku de Campos; Margareth Linde Athayde

Collaboration


Dive into the Luciane Teresinha Lovato's collaboration.

Top Co-Authors

Avatar

Rudi Weiblen

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar

Sydney Hartz Alves

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar

Helton Fernandes dos Santos

Universidade Federal do Rio Grande do Sul

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Maristela Lovato Flôres

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Thaís Felli Kubiça

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar

Mauro Pires Moraes

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar

Valéria Maria Lara

Universidade Federal de Santa Maria

View shared research outputs
Top Co-Authors

Avatar

Aline Augusti Boligon

Universidade Federal de Santa Maria

View shared research outputs
Researchain Logo
Decentralizing Knowledge