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Juliana Garcia da Silva Fonseca
University of São Paulo
11Publications
4H-index
40Citations
Publications 11
Newest
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2Catarina Augusta de Queiroz Nunes (USP: University of São Paulo)
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 6 authors...
Abstract Heat stress has a relevant effect on animal health and productivity. Stress and environmental changes can contribute to disease development, such as avian necrotic enteritis (NE). The goal of this study was to analyze the effects of heat stress applied to broiler chickens in an experimental model of co-infection with Clostridium perfringens and Eimeria spp. Therefore, the current study was designed to analyze the effect of heat stress to broiler chickens in an experimental model of infe...
Heat stress has been related to the impairment of behavioral and immunological parameters in broiler chickens. However, the literature is not clear on the involvement of neuroimmune interactions in a heat stress situation associated with bacterial and parasitic infections. The present study evaluated the production of monoamines and their metabolites in brain regions (rostral pallium, hypothalamus, brain stem, and midbrain) in broiler chickens submitted to chronic heat stress and/or infection an...
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2W.M. Quinteiro-Filho (USP: University of São Paulo)H-Index: 11
Last.Ana Paula Lima (USP: University of São Paulo)H-Index: 2
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O estresse, importante fator limitante para a producao avicola modula a resposta imune e tem sido apontado como um dos principais fatores predisponentes para o desenvolvimento de doencas em frangos de corte. Investigacoes com a neuroimunomodulacao induzida pelo estresse por calor demonstraram que as alteracoes imunes e neurais ocorrem de forma sistemica e que sao capazes de influenciar a invasibilidade bacteriana e a lesao tecidual intestinal. O presente trabalho quantificou as expressoes relati...
The gut-brain axis is known to modulate behavioral and immune responses in animals; evidence supporting this modulation in chickens, however, is elusive. Here, we analyzed the effects of heat stress and/orClostridium perfringens (CP) infection on behavior, intestinal morphology, brain activity, and corticosterone serum levels in chickens. Broilers were randomly divided into 5 equal groups: a naive group (N), a thioglycolate group (T), a thioglycolate heat-stressed group (T/HS35), an infected gro...
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2Adriana de Siqueira (USP: University of São Paulo)H-Index: 6
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 9 authors...
Abstract Avian necrotic enteritis (NE) induced by Clostridium perfringens is a disease that affects mainly the first weeks of poultry’s life. The pathogenesis of NE is complex and involves the combination of several factors, such as co-infection with different species of coccidia, immunosuppression and stress. Stress is one of the main limiting factors in poultry production. Although several studies emphasized the effects of stress on immunity, few works analyzed these effects on immunoglobulins...
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2Lilian Bernadete Namazu (USP: University of São Paulo)H-Index: 3
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 8 authors...
A enterite necrotica aviaria (NE) e uma doenca que acomete aves de producao de duas a seis semanas de vida [1]. O seu agente etiologico primario e o Clostridium perfringens, uma bacteria de crescimento em anaerobiose, gram positiva, toxigenica, formadora de esporos [2]. A patogenese da NE e complexa e envolve a associacao de diversos fatores, como a co-infeccao com especies de coccidia, imunossupressao e estresse. O estresse e um dos principais fatores limitantes na producao de aves. Dessa forma...
#1Bruno Takashi Bueno Honda (USP: University of São Paulo)H-Index: 3
#2Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 7 authors...
Multiple factors, such as environment, nutritional status, and disease, induce stress in animals during livestock production. It has been shown that poultry exposed to stressors for prolonged periods had decreases in their performance parameters, mortality and decreased host resistance to pathogenic agents. It seems that early age stress may have long-lasting impact and could possibly modify the expression of their genetic potential on growth performance and immunity. This study aimed to discuss...
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2Juliana Garcia da Silva Fonseca (USP: University of São Paulo)H-Index: 4
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 9 authors...
The brain-gut-axis has been studied as a modulating factor of immune and behavioral responses throughout the course of infectious diseases. To analyze these relationships, 25 broilers were divided into 5 groups: naive group (N), thioglycolate group (T), thioglycolate heat stressed group (T/HS35), infected group (I) and infected heat stressed group (I/HS35). The broilers of I and I/HS35 groups were infected with Clostridium perfringens from the ±15th to the 19th day of life. Heat Stress (35 ± 1 °...
#1Atilio Sersun Calefi (USP: University of São Paulo)H-Index: 7
#2Bruno Takashi Bueno Honda (USP: University of São Paulo)H-Index: 3
Last.João Palermo-Neto (USP: University of São Paulo)H-Index: 29
view all 10 authors...
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