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Article ; Online: Editorial on physiology from the neotropics.

Bícego, Kênia C / Gargaglioni, Luciane H

Comparative biochemistry and physiology. Part A, Molecular & integrative physiology

2019 Volume 242, Page(s) 110641

MeSH term(s)	Animals ; Ecosystem ; Forests ; Mammals/physiology ; Periodicals as Topic
Language	English
Publishing date	2019-12-20
Publishing country	United States
Document type	Editorial
ZDB-ID	121246-1
ISSN	1531-4332 ; 0300-9629 ; 1095-6433
ISSN (online)	1531-4332
ISSN	0300-9629 ; 1095-6433
DOI	10.1016/j.cbpa.2019.110641
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Article ; Online: Temperature effects on metabolism and energy requirement during the fast growth phase in the red-footed tortoise, Chelonoidis carbonaria.

Mendoza, Pierina / Furuta, Camila / Garcia, Beatriz / Zena, Lucas A / Carciofi, Aulus C / Bícego, Kênia C

Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology

2023 Volume 193, Issue 6, Page(s) 661–676

Abstract: Early life is a challenging phase because of the high rates of morphophysiological development and growth. Changes in ambient temperature, which directly affect energy metabolism and digestive functions in ectotherms, may be of great impact during this ... ...

Abstract	Early life is a challenging phase because of the high rates of morphophysiological development and growth. Changes in ambient temperature, which directly affect energy metabolism and digestive functions in ectotherms, may be of great impact during this phase. We addressed this issue in red-footed tortoise (Chelonoidis carbonaria) hatchlings kept in captivity. To this end, we investigated the effect of temperature (28 °C and 18 °C) on mass-specific gross energy intake (GEI
MeSH term(s)	Animals ; Temperature ; Turtles ; Energy Metabolism/physiology ; Basal Metabolism ; Energy Intake
Language	English
Publishing date	2023-09-26
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	231245-1
ISSN	1432-136X ; 0174-1578
ISSN (online)	1432-136X
ISSN	0174-1578
DOI	10.1007/s00360-023-01514-4
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Article ; Online: A5 noradrenergic neurons and breathing control in neonate rats.

Taxini, Camila L / Marques, Danuzia A / Bícego, Kênia C / Gargaglioni, Luciane H

Pflugers Archiv : European journal of physiology

2021 Volume 473, Issue 6, Page(s) 859–872

Abstract: The pontine A5 noradrenergic group contributes to the maturation of the respiratory system before birth in rats. These neurons are connected to the neural network responsible for respiratory rhythmogenesis. In the present study, we investigated the ... ...

Abstract	The pontine A5 noradrenergic group contributes to the maturation of the respiratory system before birth in rats. These neurons are connected to the neural network responsible for respiratory rhythmogenesis. In the present study, we investigated the participation of A5 noradrenergic neurons in neonates (P7-8 and P14-15) in the control of ventilation during hypoxia and hypercapnia in in vivo experiments using conjugated saporin anti-dopamine beta-hydroxylase (DβH-SAP) to specifically ablate noradrenergic neurons. Thus, DβH-SAP (420 ng/μL) or saporin (SAP, control) was injected into the A5 region of neonatal male Wistar rats. Hypoxia reduced respiratory variability in control animals; however, A5 lesion prevented this effect in P7-8 rats. Our data suggest that noradrenergic neurons of the A5 region in neonate rats do not participate in the control of ventilation under baseline and hypercapnic conditions, but exert an inhibitory modulation on breathing variability under hypoxic challenge in early life (P7-8).
MeSH term(s)	Adrenergic Neurons/drug effects ; Adrenergic Neurons/metabolism ; Adrenergic Neurons/physiology ; Animals ; Animals, Newborn ; Brain Stem/cytology ; Brain Stem/growth & development ; Brain Stem/physiopathology ; Dopamine beta-Hydroxylase/pharmacology ; Hypercapnia/physiopathology ; Hypoxia/physiopathology ; Male ; Rats ; Rats, Wistar ; Respiration ; Saporins/pharmacology
Chemical Substances	Dopamine beta-Hydroxylase (EC 1.14.17.1) ; Saporins (EC 3.2.2.22)
Language	English
Publishing date	2021-04-14
Publishing country	Germany
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	6380-0
ISSN	1432-2013 ; 0031-6768
ISSN (online)	1432-2013
ISSN	0031-6768
DOI	10.1007/s00424-021-02550-1
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Article ; Online: Heat stress affects breathing and metabolism of chicks incubated at high temperature.

Patrone, Luis Gustavo A / Rocha, Aline C G / Bernardes-Ribeiro, Mariana / Lopes-da-Costa, Gleyce / Macari, Marcos / Bícego, Kênia C / Gargaglioni, Luciane H

Respiratory physiology & neurobiology

2023 Volume 314, Page(s) 104093

Abstract: Global warming poses serious implications to animal physiology and a gradual increase in ambient temperature affects all living organisms, particularly fast-growing selected species. We recorded ventilation ( ... ...

Abstract	Global warming poses serious implications to animal physiology and a gradual increase in ambient temperature affects all living organisms, particularly fast-growing selected species. We recorded ventilation (V̇
MeSH term(s)	Animals ; Male ; Female ; Temperature ; Hypercapnia ; Respiration ; Hot Temperature ; Chickens ; Hypoxia ; Heat-Shock Response
Language	English
Publishing date	2023-06-17
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2077867-3
ISSN	1878-1519 ; 1569-9048
ISSN (online)	1878-1519
ISSN	1569-9048
DOI	10.1016/j.resp.2023.104093
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Article ; Online: Thermal tachypnea in avian embryos.

Bícego, Kênia C / Mortola, Jacopo P

The Journal of experimental biology

2017

Abstract: Many adult mammals and birds respond to heat with thermal tachypnea, an increase in breathing frequency with shallow tidal volume, with minimal increase in oxygen consumption ( ... ...

Abstract	Many adult mammals and birds respond to heat with thermal tachypnea, an increase in breathing frequency with shallow tidal volume, with minimal increase in oxygen consumption (V̇
Language	English
Publishing date	2017-10-19
Publishing country	England
Document type	Journal Article
ZDB-ID	218085-6
ISSN	1477-9145 ; 0022-0949
ISSN (online)	1477-9145
ISSN	0022-0949
DOI	10.1242/jeb.171702
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Article ; Online: Prenatal fluoxetine has long-lasting, differential effects on respiratory control in male and female rats.

Biancardi, Vivian / Patrone, Luis Gustavo A / Vicente, Mariane C / Marques, Danuzia A / Bícego, Kênia C / Funk, Gregory D / Gargaglioni, Luciane H

Journal of applied physiology (Bethesda, Md. : 1985)

2022 Volume 133, Issue 2, Page(s) 371–389

Abstract: Serotonin (5-HT) is an important modulator of brain networks that control breathing. The selective serotonin reuptake inhibitor fluoxetine (FLX) is the first-line antidepressant drug prescribed during pregnancy. We investigated the effects of prenatal ... ...

Abstract	Serotonin (5-HT) is an important modulator of brain networks that control breathing. The selective serotonin reuptake inhibitor fluoxetine (FLX) is the first-line antidepressant drug prescribed during pregnancy. We investigated the effects of prenatal FLX exposure on baseline breathing, ventilatory and metabolic responses to hypercapnia and hypoxia as well as number of brainstem 5-HT and tyrosine hydroxylase (TH) neurons of rats during postnatal development (P0-82). Prenatal FLX exposure of males showed a lower baseline V̇e that appeared in juveniles and remained in adulthood, with no sleep-wake state dependency. Prenatal FLX exposure of females did not affect baseline breathing. Juvenile male FLX showed increased CO
MeSH term(s)	Animals ; Carbon Dioxide ; Female ; Fluoxetine/pharmacology ; Humans ; Hypercapnia ; Hyperventilation ; Male ; Placenta/metabolism ; Pregnancy ; Prenatal Exposure Delayed Effects ; Rats ; Serotonin/metabolism ; Serotonin Uptake Inhibitors/pharmacology
Chemical Substances	Serotonin Uptake Inhibitors ; Fluoxetine (01K63SUP8D) ; Carbon Dioxide (142M471B3J) ; Serotonin (333DO1RDJY)
Language	English
Publishing date	2022-06-16
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	219139-8
ISSN	1522-1601 ; 0021-8987 ; 0161-7567 ; 8750-7587
ISSN (online)	1522-1601
ISSN	0021-8987 ; 0161-7567 ; 8750-7587
DOI	10.1152/japplphysiol.00020.2022
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Article: Metabolic and respiratory chemosensitivity and brain monoaminergic responses to cold exposure in chicks subjected to thermal manipulation during incubation.

Rocha, Aline C G / Patrone, Luis Gustavo A / Cristina-Silva, Caroline / Silva, Kaoma Stephani da Costa / Bícego, Kênia C / Szawka, Raphael E / Gargaglioni, Luciane H

Journal of thermal biology

2022 Volume 109, Page(s) 103317

Abstract: We evaluated ventilation (V˙ ...

Abstract	We evaluated ventilation (V˙
MeSH term(s)	Animals ; Brain/metabolism ; Carbon Dioxide ; Chickens/physiology ; Female ; Hydroxyindoleacetic Acid ; Hypercapnia/metabolism ; Hyperventilation ; Hypothermia ; Hypoxia ; Male ; Oxygen Consumption/physiology ; Serotonin/metabolism
Chemical Substances	Carbon Dioxide (142M471B3J) ; Serotonin (333DO1RDJY) ; Hydroxyindoleacetic Acid (54-16-0)
Language	English
Publishing date	2022-09-13
Publishing country	England
Document type	Journal Article
ZDB-ID	1498364-3
ISSN	1879-0992 ; 0306-4565
ISSN (online)	1879-0992
ISSN	0306-4565
DOI	10.1016/j.jtherbio.2022.103317
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Article ; Online: Intra-uterine diazepam exposure decreases the number of catecholaminergic and serotoninergic neurons of neonate rats.

da Silva Junior, Carlos Aparecido / Marques, Danuzia A / Patrone, Luís Gustavo A / Biancardi, Vivian / Bícego, Kênia C / Gargaglioni, Luciane H

Neuroscience letters

2022 Volume 795, Page(s) 137014

Abstract: Benzodiazepines, such as diazepam (DZP), are used to treat anxiety disorders, and are prescribed to pregnant woman for therapeutic purposes. Concerns regarding their consequences on postnatal development rise as they cross the placenta and interact with ... ...

Abstract	Benzodiazepines, such as diazepam (DZP), are used to treat anxiety disorders, and are prescribed to pregnant woman for therapeutic purposes. Concerns regarding their consequences on postnatal development rise as they cross the placenta and interact with the embryo. Occurrence of malformation and behavioral syndromes have been reported for different ages, but little is known about their effects on the brain after exposure during intrauterine life. Thus, we sought to evaluate the effects of intrauterine exposure to DZP on the number of brainstem's catecholaminergic and serotonergic neurons, implicated in respiratory control, in male and female rats on postnatal (P) day 12-13, using immunofluorescence labeling for tyrosine-hydroxylase (TH) and serotonin (5-HT). We observed a reduction in the number of catecholaminergic neurons for males and females. Special attention is given to the reduction in the density of neurons in the A6 region, involved in ventilatory responses to CO
MeSH term(s)	Pregnancy ; Rats ; Animals ; Female ; Male ; Diazepam/pharmacology ; Serotonergic Neurons ; Benzodiazepines/pharmacology ; Anti-Anxiety Agents/pharmacology ; Brain ; Serotonin/pharmacology
Chemical Substances	Diazepam (Q3JTX2Q7TU) ; Benzodiazepines (12794-10-4) ; Anti-Anxiety Agents ; Serotonin (333DO1RDJY)
Language	English
Publishing date	2022-12-12
Publishing country	Ireland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	194929-9
ISSN	1872-7972 ; 0304-3940
ISSN (online)	1872-7972
ISSN	0304-3940
DOI	10.1016/j.neulet.2022.137014
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Article: Metabolic and respiratory chemosensitivity and brain monoaminergic responses to cold exposure in chicks subjected to thermal manipulation during incubation

Rocha, Aline C.G. / Patrone, Luis Gustavo A. / Cristina-Silva, Caroline / Silva, Kaoma Stephani da Costa / Bícego, Kênia C. / Szawka, Raphael E. / Gargaglioni, Luciane H.

Journal of thermal biology. 2022 Oct., v. 109

2022

Abstract: We evaluated ventilation (V˙E), body temperature (TB), oxygen consumption (V˙ O₂), respiratory equivalent (V˙E/ V˙ O₂), and monoamine concentrations of 14-day-old (14d) male and female chicks from eggs incubated at low (LT, 36 °C), control (CT, 37.5 °C) ... ...

Abstract	We evaluated ventilation (V˙E), body temperature (TB), oxygen consumption (V˙ O₂), respiratory equivalent (V˙E/ V˙ O₂), and monoamine concentrations of 14-day-old (14d) male and female chicks from eggs incubated at low (LT, 36 °C), control (CT, 37.5 °C) and high (HT, 39 °C) temperature during the early embryonic phase, to normoxia, hypercapnia and hypoxia under exposure to cold environment (20 °C). At normoxia, acute cold exposure did not affect the ventilatory variables, with the exception of HT males, in which cold prevented the reduced V˙E observed under thermoneutral conditions. Exposure to 20 °C caused a decrease in TB in both sexes, and LT and HT females presented a greater hypothermic response. Hypercapnia combined with cold did not alter the ventilatory variables, but LT females and CT males and females showed a blunted CO₂-induced hyperventilation due to a higher V˙ O₂, compared to the same groups in thermoneutral conditions. Unlike with thermoneutral conditions, the blunted hypercapnic hyperventilation observed in the HT groups was not observed during cold challenge. CO₂ exposure promoted a similar decrease in TB in the thermoneutral and acutely cold exposed groups, while LT females under cold condition presented a blunted hypothermic response. During hypoxia, cold challenge attenuated the increase in V˙E in LT females and HT males, due to changes in VT. Hypoxic metabolic depression was greater in LT females and males and HT males during cold exposure, while no change in V˙E/ V˙ O₂ was observed. The only alteration in monoaminergic concentration under cold challenge was an increase in brainstem 5-HIAA and 5-HIAA/5-HT ratio in HT females, and an enhanced 5-HT concentration in HT males. In summary, thermal manipulation during embryogenesis induces 14d old chicks to respond differently to cold stress with LT females and HT males being more sensitive.
Keywords	body temperature ; brain stem ; carbon dioxide ; cold ; cold stress ; cold zones ; embryogenesis ; females ; hypercapnia ; hypoxia ; males ; normoxia ; oxygen consumption ; serotonin
Language	English
Dates of publication	2022-10
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	1498364-3
ISSN	1879-0992 ; 0306-4565
ISSN (online)	1879-0992
ISSN	0306-4565
DOI	10.1016/j.jtherbio.2022.103317
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Article: Starch and fiber intake effects on energy metabolism, growth, and carapacial scute pyramiding of red-footed tortoise hatchlings (Chelonoidis carbonaria)

Mendoza, Pierina / Furuta, Camila / Garcia, Beatriz / Zena, Lucas A. / Artoni, Silvana / Dierenfeld, Ellen S. / Bícego, Kênia C. / Carciofi, Aulus C.

Comparative biochemistry and physiology. 2022 Mar., v. 265

2022

Abstract: Tortoise husbandry includes reports of excessive growth and carapace pyramiding, although triggers still remain to be fully elucidated. Juvenile red-footed tortoises (Chelonoidis carbonaria) were fed with two different diets, one high in fiber (HF; 14.2% ...

Abstract	Tortoise husbandry includes reports of excessive growth and carapace pyramiding, although triggers still remain to be fully elucidated. Juvenile red-footed tortoises (Chelonoidis carbonaria) were fed with two different diets, one high in fiber (HF; 14.2% crude fiber; 39.2% neutral detergent fiber, NDF; dry matter basis, DMB) and one high in starch (HS; 27.7% DMB), to assess effects on energy metabolism, nutrient digestibility, and growth. A total of 20 hatchlings (10 per diet) were used to evaluate: apparent digestibility coefficients (Da) of nutrients and gross energy (GE), passage times at 5 and 11 months of age; resting and post-prandial metabolic rates at 6 and 12 months of age; growth rates; pyramiding; and estimated body composition. Animals fed HS showed higher mass-specific intake of digestible energy (113.9 ± 32.1 kJ kg⁻¹ day⁻¹ vs. 99.6 ± 35.3 kJ kg⁻¹ day⁻¹; P < 0.05), digestible DM (6.1 ± 1.8 g kg⁻¹ day⁻¹ vs. 5.0 ± 1.8 g kg⁻¹ day⁻¹; P < 0.01), shorter transit (3 ± 1 days vs. 4 ± 1 days; P < 0.01) and retention times (8 ± 2 days vs. 10 ± 2 days; P < 0.01), and higher Da of DM, starch, NDF, and GE. Crude protein Da was higher for HF. Rest and post-prandial metabolic rates, and pyramiding degree were not affected by diets. At 13 months, the animals from HS presented wider plastrons and carapaces, and higher carapace width growth rates. In addition, these animals had lower body mineral content (1.88 ± 0.15% vs. 2.15 ± 0.19%; P < 0.01) and bone density (0.13 ± 0.01 g mm⁻² vs. 0.15 ± 0.02 g mm⁻²; P < 0.02). Results provide evidence that highly digestible foods can accelerate shell growth and lower mineralization in this species.
Keywords	Chelonoidis ; body composition ; bone density ; crude fiber ; crude protein ; diet ; digestibility ; digestible energy ; energy ; energy metabolism ; juveniles ; mineral content ; mineralization ; neutral detergent fiber ; starch ; tortoises
Language	English
Dates of publication	2022-03
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	121246-1
ISSN	1531-4332 ; 0300-9629 ; 1095-6433
ISSN (online)	1531-4332
ISSN	0300-9629 ; 1095-6433
DOI	10.1016/j.cbpa.2021.111131
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