scholarly journals Evidence of Helicobacter spp. in Saliva and Gastric Mucosa of Domestic Dogs in the Central Region of Rio Grande do Sul, Brazil

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Daniel D. Guerra Segundo ◽  
Camila B. E. Mello ◽  
Juliana F. Cargnelutti ◽  
Mariana M. Flores ◽  
Luís F. Pedrotti ◽  
...  
Keyword(s):  
Central Region ◽  
Gastric Lesion ◽  
Rio Grande ◽  
Domestic Dogs ◽  
Occurrence Rate ◽  
Rio Grande Do Sul ◽  
Gastric Lesions ◽  
Gastric Diseases ◽  
Phylogenetic Groups ◽  
H Pylori

Helicobacter pylori is a spiral-shaped bacterium, which plays a role in the aetiology of gastric diseases in humans. Non-H. pylori Helicobacter (NHPH) species naturally colonise the stomach of animals and also induce gastric lesions in humans, highlighting their zoonotic importance. We evaluated the gastric bacterial colonisation density and gastric lesions and sought to identify the main phylogenetic groups of the Helicobacter spp. obtained from dogs in the central region of Rio Grande do Sul, Brazil, with this study aiming to investigate the occurrence of Helicobacter spp. in saliva and gastric samples from these dogs. This study included 35 dogs and used analysis such as cytology, histopathology, PCR, rapid urease testing, and phylogenetic analysis. Of the dogs, 94.3% were positive for Helicobacter spp., and these bacteria were present in the stomach of 32 dogs and saliva of eight. Respectively, eight, 15, and nine dogs had mild, moderate, and severe colonisation. Lymphocytic-plasmacytic infiltrate was the main gastric lesion. However, the presence of Helicobacter and the density appeared to be unrelated to the gastric lesions. The samples possessed a high nucleotide identity with remarkably similar sequences among some of the species of NHPH such as H. heilmannii s.s., H. salomonis, H. felis, and H. bizzozeronii. The saliva of domestic dogs, even of those who appear clinically healthy, can cause Helicobacter infection in humans and other animals, with, in these dogs, increased density, occurrence rate, and predominance of NHPH of zoonotic importance being found in the stomach with a lower occurrence of Helicobacter spp. in the saliva.

scholarly journals Clinical, pathological and epidemiological aspects of outbreaks of bluetongue disease in sheep in the central region of Rio Grande do Sul

2017 ◽  
Vol 37 (12) ◽  
pp. 1443-1452
Author(s):  
Ronaldo M. Bianchi ◽  
Welden Panziera ◽  
Tatiane C. Faccin ◽  
Gisane L. de Almeida ◽  
Juliana F. Cargnelutti ◽  
...  
Keyword(s):  
Central Region ◽  
Striated Muscle ◽  
Clinical Signs ◽  
Rio Grande ◽  
Nasal Discharge ◽  
Rio Grande Do Sul ◽  
Sample Collection ◽  
Area At Risk ◽  
Tissue Samples ◽  
Facial Swelling

ABSTRACT: This article describes the clinical, pathological and epidemiological aspects of 17 outbreaks of bluetongue (BT) disease in sheep occurring between December 2014 and July 2015 in the central region of Rio Grande do Sul state (RS), southern Brazil. Affected farms were visited for clinical examination, necropsy, sample collection and epidemiological investigation. The outbreaks were seasonal and occurred during the summer and autumn. A total of 180 sheep (20.4%) out of 884 in 17 small herds were affected. All ages of Texel and mixed breed sheep were affected. However, lambs (younger than one year) had higher morbidity than adult sheep. The most frequent clinical signs were anorexia, lethargy, loss of body condition, facial swelling mainly involving the lips, and greenish seromucous or mucous nasal discharge. Pulmonary lesions characterized by edema were the most prevalent findings; however, erosive and ulcerative lesions in the upper gastrointestinal tract, as well as cardiac, skeletal muscle and esophageal striated muscle necrosis, and hemorrhage in the pulmonary artery were also frequent. The bluetongue virus (BTV) genome was detected by RT-PCR in blood and tissue samples (spleen and lungs) of 21 animals from 17 outbreaks. The virus involved in the outbreak 3 was subsequently isolated and shown to belong to serotype 17, for the first time reported in Brazil. In summary, our data support the BTV genotype 17 as the etiological agent of the outbreaks and indicate that the central region of RS is an area at risk for BT in sheep, a disease previously not recognized in the region.

Recognizing Different Lifeways and Subsistence Practices through Analysis of the Material Cultures of Mound Sites in Rio Grande do Sul, Brazil

2020 ◽  
Vol 31 (2) ◽  
pp. 308-324
Author(s):  
Anderson Marques Garcia
Keyword(s):  
Central Region ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Hunter Gatherers ◽  
Patos Lagoon ◽  
Projectile Points ◽  
Brazilian State ◽  
Subsistence Practices ◽  
Mound Sites

In the Brazilian state of Rio Grande do Sul, the term cerrito was traditionally used to designate archaeological phenomena that emerge in the form of mounds in different landscapes. Except for recent research developed in the southwestern region of the Patos Lagoon, few advances have occurred since the 1980s in the study of cerritos in Brazil. This article presents an analysis of the lithic industries of sites with mounds in the southwestern region of the Patos Lagoon and in the central region in the current territory of Rio Grande do Sul. The results, along with other data from the sites, suggest that coastal sites were occupied by sedentary fisher-hunter-gatherers, who also possibly domesticated certain plants. Lithic material was scarce there and was mainly produced from pebbles and quartz cobbles using the anvil technique. In contrast, central region formations presented mounds on outcrops, using land, pebbles, and boulders; the area was occupied by a hunter-gatherer group that had projectile points and other instruments carved mainly by façonnage and débitage.

Aegla manuinflata, a new species of freshwater anomuran (Decapoda: Anomura: Aeglidae) from Brazil, determined by morphological and molecular characters

Zootaxa ◽  
2009 ◽  
Vol 2088 (1) ◽  
pp. 31-40 ◽  
Author(s):  
SANDRO SANTOS ◽  
GEORGINA BOND-BUCKUP ◽  
MARCOS PÉREZ-LOSADA ◽  
MARLISE LADVOCAT BARTHOLOMEI-SANTOS ◽  
LUDWIG BUCKUP
Keyword(s):  
New Species ◽  
Central Region ◽  
Mitochondrial Gene ◽  
Rio Grande ◽  
Sister Group ◽  
Rio Grande Do Sul ◽  
High Degree ◽  
Uruguay River ◽  
A New Species ◽  
Molecular Characters

A new species of freshwater anomuran, Aegla manuinflata n. sp. (Decapoda: Anomura: Aeglidae), is described from the Ibicuí River basin, a tributary of the Uruguay River, from the central region of the state of Rio Grande do Sul, Brazil. It can be distinguished from its congeners based on both morphological and molecular (mitochondrial gene — COII) evidence. Morphologically, the new species partly resembles A. inermis and A. uruguayana, but differs in having an inflated cheliped propodus and more elongated dactyls, besides other features. Our molecular results showed a high degree of genetic divergence between A. manuinflata and its sister group (composed of A. singularis, A. uruguayana, A. rossiana and A. platensis), an indication of species distinctness within the Aeglidae.

scholarly journals Balantidium coli in Pigs of Distinct Animal Husbandry Categories and Different Hygienic-Sanitary Standards in the Central Region of Rio Grande do Sul State, Brazil

2017 ◽  
Vol 45 (1) ◽  
pp. 6 ◽  
Author(s):  
Luís Antonio Sangioni ◽  
Sônia De Avila Botton ◽  
Fernanda Ramos ◽  
Gustavo Cauduro Cadore ◽  
Silvia Gonzales Monteiro ◽  
...  
Keyword(s):  
Central Region ◽  
Intestinal Parasites ◽  
Physiological State ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Natural Reservoir ◽  
Swine Farms ◽  
Balantidium Coli ◽  
Significant Difference ◽  
Stool Samples

Background: Balantidium coli is a commensal protozoan that infects several animals, but it has pigs as its natural reservoir. In the presence of predisposing factors, B. coli can become pathogenic for swine, causing enteric lesions. Infections determined by this protozoan may be a risk to public health, due to dysentery in animal keepers and veterinarians. This study aimed to determine the occurrence of infection by B. coli in pigs of distinct husbandry categories, as well as unlike physiological state, kept in farms with different hygienic-sanitary standards, located in the central region of Rio Grande do Sul State in Brazil.Materials, Methods & Results: Stool samples were collected from 12 different farms with different hygienic-sanitary standards being four farms of finisher pigs (G1; n = 287), four farms with pregnant females (G2; n = 60) and four farms with lactation sows (G3;  n = 40), and all samples were submitted to coproparasitological analyses to verify the presence of cysts or trophozoites of B. coli. The infection levels were considered mild (1-100 cyst/trophozoite), moderate (101300 cyst/trophozoite) and high (>300 cysts/trophozoite). In addition, information about hygienic-sanitary conditions of each farm was collected. The occurrence of B. coli infection in all swine stool samples analyzed was 60.9% (236/387); however, in G1, G2 and G3 was 54.7% (157/287), 91.7% (55/60) and 65% (26/40) respectively. There was significant difference in the occurrence of G1 (P < 0.05) except between farms B and C (67.9% and 56.6% respectively). There was also a significant difference (P < 0.05) between the occurrence of B. coli found in G2 and G3. The infection levels were considered predominantly mild in G1; and mild to moderate in G2 and G3.Discussion: In this research it was confirmed the presence of B. coli in swine farms located in the central region of Rio Grande do Sul State in Brazil. This area is known as being an important producer of pigs in Brazil. The results obtained in this study, demonstrated that swine farms with better hygienic and sanitary standards, had mild infections by B. coli. However, the presence of intestinal parasites, especially protozoa, can occur even in properties with good management practices. However, protozoa infections can cause important production losses, especially when associated with other pathogens or nutritional problems. The occurrence of B. coli observed in pregnant (G2) and lactating (G3) females was significant, and the infection level was mild to moderate. These conditions suggest that pregnancy, childbirth and lactation are critical stages for females, mainly due to physiological stress, resulting in a change in the hormonal levels and immune status of the animals. Thus, these factors cause declines in the immune response of pigs making them susceptible to infections and the increase of cyst excretion of B. coli in feces. The abundance of protozoan cysts in feces contaminates the environment and increases the risk of infections in humans. In addition, it was demonstrated the occurrence of B. coli in an important site of swine production in RS, Brazil. B. coli is related to the physiological state of the animals and the hygienic and sanitary management in different categories of swine. In conclusion, this study highlights the epidemiological importance of swine as natural reservoir of Balantidium coli and the risk potential of infection to animals and humans. Additionally, sanitary program in farming pigs must be improved in order to guarantee healthy and food-safe product for consumers.

scholarly journals Estudo sistemático da família Cichlidae na região central do Rio Grande do Sul. I Gêneros: Aequidens, Chichlaurus e Geophagus

1981 ◽  
Vol 3 (3) ◽  
pp. 65
Author(s):  
Maria Lacy Cezimbra Weis ◽  
Ilca Marion Knewitz Bossemeyer ◽  
Horst Oscar Lippold
Keyword(s):  
Central Region ◽  
Rio Grande ◽  
The State ◽  
Rio Grande Do Sul ◽  
Geophagus Brasiliensis ◽  
Aequidens Portalegrensis

Among the specimens of the Cichlidae family collected in the central region of the State of Rio Grande do Sul (Brazil), the initial studies were done in genera represented by orbicular forms, which comprise: Aequidens, Cichlaurus and Geophagus. Of these genera, four species were found in different proportions: Aequidens portalegrensis, Cichlaurus facetus, Geophagus brasiliensis and Geophagus gymnogenys.

scholarly journals Gestão escolar e produção da aula: o trabalho dos professores em pauta/ School Management and Class Ellaboration: Work of Teachers on the Agenda

2016 ◽  
Vol 18 (26) ◽  
pp. 133-154
Author(s):  
Liliana Soares Ferreira ◽  
Gabriel dos Santos Kehler
Keyword(s):  
Public Schools ◽  
Central Region ◽  
Rio Grande ◽  
School Management ◽  
Production Data ◽  
Rio Grande Do Sul ◽  
Research Project ◽  
Democratic Management ◽  
Democratic School

Sistematiza-se projeto de pesquisa que analisou os sentidos atribuídos pelos professores às relações entre a gestão escolar e seu trabalho. A produção de dados aconteceu por meio de entrevistas, entre os anos de 2007 e 2008, em escolas públicas da região Central do Estado do Rio Grande do Sul, envolvendo quarenta professores. Estudo de caráter dialético, apresenta três sequências argumentativas: concepções de gestão escolar democrática, seus sentidos e movimentos; a relação entre escola e gestão democrática a partir dos discursos dos professores entrevistados; a relação entre trabalho e gestão escolar democrática. Seguem-se as considerações finais aos argumentos apresentados. ABSTRACTSystematized research project carried out with the objective to analyze the meanings assigned by teachers to relations between the school management and his work. The production data was through interviews, between the years 2007 and 2008 in public schools in the central region of Rio Grande do Sul, involving forty teachers. Study dialectical character, is organized into three sequences argumentative: conceptions of democratic school management, their senses and movements, the relation between school and democratic management from the discourses of the teachers interviewed, the relation between labor and democratic school management. Here are the final considerations objectify systematizing the arguments.

scholarly journals Cacti of Santa Maria – RS, Brazil

2021 ◽  
Vol 43 ◽  
pp. e23
Author(s):  
Igor Wassiljew Moia ◽  
Guilherme Moreira da Silva ◽  
Liliana Essi
Keyword(s):  
Endangered Species ◽  
Central Region ◽  
Threatened Species ◽  
Conservation Status ◽  
Rio Grande ◽  
Complete List ◽  
Rio Grande Do Sul ◽  
Species List ◽  
Floristic Survey ◽  
Santa Maria

A floristic survey of the Cactaceae family was carried out in the municipality of Santa Maria, Brazil, which is localized in the central region of Rio Grande do Sul state. The study was conducted between August 2017 and November 2018, during which time 14 species were recorded. Five species are on the endangered species list of Rio Grande do Sul. The threatened species are Echinopsis oxygona (Link) Zucc. Ex. Pfeiff. Otto, Parodia horstii (F. Ritter) N.P. Taylor, Parodia glaucina (F. Ritter), Hofacker M. Machado, Parodia linkii (Lehm.), R. Kiesling, and Parodia ottonis (Lehm.) N. P. Taylor. This paper presents a complete list of the species with reference to conservation status.

scholarly journals CARACTERIZAÇÃO FLORÍSTICA E ESTRUTURAL DE UM FRAGMENTO FLORESTAL NA REGIÃO CENTRAL DO RIO GRANDE DO SUL

Nativa ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 73 ◽  
Author(s):  
Roselene Marostega Felker ◽  
Ana Paula Moreira Rovedder ◽  
Maureen De Moares Stefanello ◽  
Rafaela Badinelli Hummel ◽  
Bruna Balestrin Piaia ◽  
...  
Keyword(s):  
Central Region ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Forest Fragment ◽  
Horizontal Structure ◽  
History Of ◽  
Advanced Stages ◽  
Restoration Strategies ◽  
Structure Density ◽  
Definition Of

O conhecimento da estrutura e composição de espécies florestais, juntamente com o entendimento da formação de grupos florísticos é um importante subsídio para a definição de estratégias de conservação e restauração florestal. O presente estudo analisou a estrutura, diversidade e agrupamentos florísticos de um fragmento florestal com histórico de degradação no Parque Estadual Quarta Colônia, região central do Rio Grande do Sul. Em 2012, foram avaliados os indivíduos arbóreos com CAP ≥ 15 cm, em 16 parcelas de 10 x 10 m. Para análise da estrutura florística foram calculados densidade e frequência em dados absolutos, diversidade Shannon (H’) e equabilidade de Pielou (J). A caracterização da vegetação foi realizada através da análise de agrupamento, pelo método Twinspan. O fragmento apresentou grupos em estágios iniciais e avançados de sucessão. Dentre as espécies levantadas Escallonia bifida se destacou como indicadora na formação dos grupos florísticos de áreas abertas. Os altos valores de densidade e frequência da espécie, também a caracterizam como a mais importante na estrutura horizontal do fragmento florestal, demonstrando potencial para utilização em ações de restauração.Palavra-chave: grupos florísticos; Escallonia bifida; sucessão ecológica. FLORISTIC AND STRUCTURAL CHARACTERIZATION OF A FOREST FRAGMENT IN THE CENTRAL REGION OF RIO GRANDE DO SUL STATE ABSTRACT:The knowledge of the structure and composition of forest species together with the understanding of the formation of floristic groups is an important subsidy for the definition of conservation and restoration strategies. The present study analyzed the structure, diversity and floristic clusters of a forest fragment with a history of degradation, in the State Park Quarta Colônia, central region of Rio Grande do Sul. In 2012, tree individuals with CBH ≥ 15 cm were evaluated in 16 plots of 10x10 m. For analysis of the floristic structure density and frequency were calculated in absolute data, Shannon diversity (H ') and Pielou equability (J). The vegetation characterization was performed through the cluster analysis, using the Twinspan method. The fragment presented groups in the early and advanced stages of succession. Among the raised species Escallonia bifida was highlighted as an indicator in the formation of floristic groups of open areas. The high values of density and frequency of the species also characterize it as the most important in the horizontal structure of the forest fragment, demonstrating potential for use in restoration actions.Keywords: Floristic groups, Escallonia bifida, ecological succession. DOI:

scholarly journals A circulação atmosférica regional e as famílias de tipos de tempo identificadas na região central do Rio Grande do Sul

1981 ◽  
Vol 3 (3) ◽  
pp. 101
Author(s):  
Maria Da Graça Barros Sartori
Keyword(s):  
Central Region ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Behavioural Patterns ◽  
Atmospheric Systems ◽  
Tropical Systems

The analysis of the action of the atmospheric systems in the central region of Rio Grande do Sul made possible the individuation of the various types of weather associated to them, resulting from various behavioural patterns. The patterns were obtained through the tecnique of rhythmic analysis. The identified patterns, numbering fifteen, made the establishment of three big families of types of weather possible as a results of the plotted responses from atmospheric elements due either to the advance and dominance of the extra-tropical systems in the region, or to the inter-tropical systems, or their un-stabilizing mechanisms over the weather.

scholarly journals Prevalência da infecção por Helicobacter pylori e das lesões precusoras do câncer gástrico em pacientes dispéticos

2007 ◽  
Vol 44 (2) ◽  
pp. 93-98 ◽  
Author(s):  
Leandro Bizarro Muller ◽  
Renato Borges Fagundes ◽  
Claudia Carvalho de Moraes ◽  
Alexandre Rampazzo
Keyword(s):  
Helicobacter Pylori ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Endoscopia Digestiva ◽  
De Se ◽  
H Pylori ◽  
Metaplasia Intestinal ◽  
Cáncer Gástrico

RACIONAL: A infecção pelo Helicobacter pylori é fator importante no desenvolvimento da carcinogênese gástrica, mas somente uma fração dos pacientes infectados irá desenvolver câncer gástrico. A infecção pelo H. pylori determina gastrite crônica não-atrófica, que pode evoluir para gastrite atrófica e metaplasia intestinal e, finalmente, para displasia e adenocarcinoma. OBJETIVO: Estudar a prevalência da infecção pelo H. pylori e das lesões precursoras de câncer gástrico e sua associação, em pacientes submetidos a endoscopia digestiva alta em serviço de referência da região central do Estado do Rio Grande do Sul. MÊTODOS: Foram analisadas retrospectivamente biopsias de corpo e antro gástrico obtidas de pacientes submetidos a endoscopia digestiva alta no período entre 1994 e 2003, nas quais foi realizada pesquisa de H. pylori. As lâminas foram coradas pelo método da hematoxilina-eosina e os achados histológicos foram classificados de acordo com o sistema de Sydney em mucosa normal, gastrite crônica não-atrófica, gastrite atrófica e metaplasia intestinal. As alterações histológicas encontradas foram relacionadas com a presença de infecção pelo H. pylori. RESULTADOS: Biopsias de 2.019 pacientes foram incluídas no estudo. A idade média dos pacientes foi de 52 (±15) anos e 59% eram do sexo feminino. A pesquisa de H. pylori foi positiva em 76% dos pacientes. Mucosa normal, gastrite crônica não-atrófica, gastrite atrófica e metaplasia intestinal foram diagnosticadas em 5%, 77%, 3% e 15% das biopsias, respectivamente. A infecção por H. pylori determinou uma razão de chances 10 vezes (IC95% 6.50 - 17%) maior de se encontrar algum grau de alteração histológica na mucosa gástrica. A razão de chances dos pacientes infectados apresentarem gastrite crônica não-atrófica, foi igual a 3 (IC95% 2,2 - 3,4). A razão de chances dos pacientes infectados apresentarem gastrite atrófica e metaplasia intestinal foi menor que 1. CONCLUSÃO: A prevalência da infecção por H. pylori foi alta (76%) e os indivíduos infectados apresentaram probabilidade 10 vezes maior para a ocorrência de lesão da mucosa gástrica. Gastrite crônica não-atrófica apresentou prevalência de 77%, gastrite atrófica 3% e metaplasia intestinal 15%. A infecção pelo H. pylori determinou uma probabilidade 3 vezes maior para o desenvolvimento de gastrite crônica não-atrófica e não determinou risco para a ocorrência de gastrite atrófica e metaplasia intestinal, sugerindo que possivelmente outros fatores de risco, além do H. pylori, estejam envolvidos no processo da carcinogênese gástrica.

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