Kidney functional morphology variations between spring and winter in the Saharan male lizard Uromastyx acanthinura (Sauria, Agamidae), with special reference to body water economy

Talmatamar, Amina; Chaabane, Isma; Salem, Sabiha; Touati, Hanane; Remana, Soumia; Chevalier, Clément; Moudilou, Elara; Exbrayat, Jean-Marie; Zohra, Barka-Dahane

doi:10.1016/j.tice.2020.101448

Cited by 6 publications

(9 citation statements)

References 53 publications

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“…Interestingly and described for the first time, the dehydrated 18month-old male rats showed higher renal expression of α-SMA than control 18-monthold male rats. Similar results were observed in the lizard Uromastix acanthinura, with the expression of α-SMA surrounding the collecting duct, indicating that this renal structural characteristic is involved in body water economy and may be considered as an adaptive mechanism to resist dehydration in an arid environment (24).…”

Section: Discussionsupporting

confidence: 73%

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Cognuck¹,

Almeida²,

Reis³

et al. 2022

Preprint

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Aging is a complex biological process, with gradual and progressive decline in structure and function in many organ systems. Our objective is to determine if structural changes produced by aging, vary with sex, in a stressful situation such as dehydration. The expression of Slc12a3 mRNA in renal cortex, α-smooth muscle actin (α-SMA) and fibronectin, was evaluated in male and female rats aged 3 and 18 months submitted or not to water deprivation (WD) for 48 hours. When comparing ages, 18-month-old males showed lower expression of Slc12a3 mRNA than 3-month-old males, and control and WD 18-moth-old male and female rats exhibited higher expression of α-SMA than respective 3-month-old rats. Fibronectin was higher in both control and WD 18-month-old males than respective 3-month-old males. In females, only control 18-month-old rats showed higher fibronectin than control 3-month-old rats. When we compared sex, control and WD 3-month-old female rats had lower expression of Slc12a3 mRNA than re-spective males. WD 18-month-old male rats presented higher expression of fibronectin and α-SMA than WD 18-month-old female rats. When we compared hydric condition, WD 18-month-old males displayed lower relative expression of Slc12a3 mRNA and higher α-SMA expression than control 18-month-old males. Aging, sex, and dehydration lead to alteration in kidney structure.

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Section: Discussionsupporting

confidence: 73%

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Cognuck¹,

Almeida²,

Reis³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Interestingly, and described for the first time, the water-deprived 18-month-old male rats showed higher renal expression of α-SMA than control 18-month-old male rats. Similar results were observed in the lizard Uromastyx acanthinura , with the expression of α-SMA surrounding the collecting duct, indicating that this renal structural characteristic is involved in body water economy and may be considered as an adaptive mechanism to resist dehydration in an arid environment [ 23 ].…”

Section: Discussionsupporting

confidence: 56%

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Cognuck

Almeida

Reis

et al. 2022

IJMS

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Aging is a complex biological process, resulting in gradual and progressive decline in structure and function in many organ systems. Our objective is to determine if structural changes produced by aging vary with sex in a stressful situation such as dehydration. The expression of Slc12a3 mRNA in the renal cortex, α-smooth muscle actin (α-SMA), and fibronectin was evaluated in male and female rats, aged 3 and 18 months, submitted and not submitted to water deprivation (WD) for 48 h, respectively. When comparing ages, 18-month-old males showed a lower expression of Slc12a3 mRNA than 3-month-old males, and control and WD 18-month-old male and female rats exhibited a higher expression of α-SMA than the respective 3-month-old rats. Fibronectin was higher in both control and WD 18-month-old males than the respective 3-month-old males. In females, only the control 18-month-old rats showed higher fibronectin than the control 3-month-old rats. When we compared sex, control and WD 3-month-old female rats had a lower expression of Slc12a3 mRNA than the respective males. The WD 18-month-old male rats presented a higher expression of fibronectin and α-SMA than the WD 18-month-old female rats. When we compared hydric conditions, the WD 18-month-old males displayed a lower relative expression of Slc12a3 mRNA and higher α-SMA expression than the control 18-month-old males. Aging, sex, and dehydration lead to alterations in kidney structure.

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“…They were 0.8 cm long and weight 0.065 gm (Fig 1C). The same outcomes were observed in the kidneys of Uromastyx acanthinura (Talmatamar et al, 2020), Notomabuya frenata (Novelli et al, 2018) and Cerberus rynchops (Thongboon et al, 2017). The cortex and medulla were not differentiated in both species, this means that the renal corpuscles and tubules were scattered throughout the cortex and medulla.…”

Section: Resultsmentioning

confidence: 55%

“…The cortex and medulla were not differentiated in both species, this means that the renal corpuscles and tubules were scattered throughout the cortex and medulla. Al-Shehri and Al-Doaiss (2021), Talmatamar et al (2020), Novelli et al (2018), Thongboon et al (2017) and Yari and Gharzi (2013) all achieved similar findings.…”

Section: Resultsmentioning

confidence: 66%

“…According to Richter and Splechtna (1996) and Melman et al (1991), the amphibian Malpighian corpuscle has undergone extensive studies and was quite large when compared to that of other vertebrates. Talmatamar et al (2020) showed that Uromastyx acanthinura's kidney's glomeruli were small in comparison to frogs. This could provide information on the Uromastyx acanthinura's urine flow rate and glomerular filtration rate.…”

Section: Resultsmentioning

confidence: 99%

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Comparative Study on the Kidneys of Ptychadena mascarenensis and Chalcides ocellatus ocellatus in Relation to Their Environment

Moghith,

Ibrahim,

El-Kader

et al. 2024

IJAR

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Background: The kidneys manage body fluids and electrolytes in addition to performing osmoregulation and metabolic waste disposal. The goal of the present study was to investigate the structural characteristics of the kidneys of two tetrapod species; Ptychadena mascarenensis (Mascarene frog) and Chalcides ocellatus ocellatus (Ocellated skink) concerning their habitat, which could be linked to unique structural renal differences. Methods: During December 2020, four specimens of each species were obtained from various locations in Egypt. The animals were captured alive and were suffocated by inhaling chloroform. There kidneys were removed and processed for morphological, histological and electron microscopy examinations. Result: Ptychadena mascarenensis and Chalcides ocellatus ocellatus have groups of nephrons in their kidneys and each nephron consists of a renal corpuscle, an intermediate segment, a proximal tubule, a distal tubule and a collecting duct system. The renal corpuscles and tubules were dispersed throughout the cortex and medulla of both species so the cortex and medulla were not differentiated. In the two tetrapod classes Amphibia (Ptychadena mascareniensis) and Reptilia (Chalcides ocellatus ocellatus), some differences in the morphological, histological and ultrastructural features of the kidney have been identified. Animals use each of these structures to help them adapt to their surroundings.

show abstract

Kidney functional morphology variations between spring and winter in the Saharan male lizard Uromastyx acanthinura (Sauria, Agamidae), with special reference to body water economy

Cited by 6 publications

References 53 publications

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Alterations in Kidney Structures Caused by Age Vary According to Sex and Dehydration Condition

Comparative Study on the Kidneys of Ptychadena mascarenensis and Chalcides ocellatus ocellatus in Relation to Their Environment

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