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Li L, Zhou W, Miao S, Dong X, Zou X. Effects of Zinc on Cell Proliferation, Zinc Transport, and Calcium Deposition in Primary Endometrial Epithelial Cells of Laying Hens In Vitro. Biol Trace Elem Res 2021; 199:4251-4259. [PMID: 33615394 DOI: 10.1007/s12011-020-02545-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/13/2020] [Indexed: 11/25/2022]
Abstract
For birds, the uterus is an important part for eggshell mineralization, and the establishment of the endometrial epithelial cell (EEC) model was beneficial to the study of uterine function. This study was conducted to establish a culture model of primary EECs of laying hens and explore the effects of zinc on primary EEC proliferation, zinc transport, and calcium deposition in vitro. The EECs were isolated and cultured via type I collagenase digestion, and in the logarithmic phase during 2-5 days, and then reached the plateau phase on the 7th day of inoculation. Results showed that the proliferation of EECs treated by 50 μM ZnSO4 or zinc-methionine (Zn-Met) were markedly promoted at 24-h or 48-h treating time (P < 0.05). In later experiments, the EECs were divided into three groups, involving a control group (no zinc treated), ZnSO4 group (50 μM zinc treated) and a Zn-Met group (50 μM zinc treated). Results showed the relative fluorescence intensity of Ca2+ in the Zn-Met group was significantly higher than that in the control group (P < 0.05). As for zinc transporters, it was only observed that mRNA levels of metallothionein (MT) in EECs showed a significant difference (P < 0.05) between the Zn-Met group and the control. In conclusion, the EECs of laying hens isolated by scraping and digested collagenase I were with better adherent growth. Moreover, Zn-Met can increase intracellular Ca2+ concentration and upregulate expressions of MT mRNA in the EECs of laying hens.
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Affiliation(s)
- Lanlan Li
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan, 430023, People's Republic of China
| | - Wenting Zhou
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Sasa Miao
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Xinyang Dong
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Xiaoting Zou
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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Cui Z, Zhang Z, Amevor FK, Du X, Li L, Tian Y, Kang X, Shu G, Zhu Q, Wang Y, Li D, Zhang Y, Zhao X. Circadian miR-449c-5p regulates uterine Ca 2+ transport during eggshell calcification in chickens. BMC Genomics 2021; 22:764. [PMID: 34702171 PMCID: PMC8547053 DOI: 10.1186/s12864-021-08074-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 10/06/2021] [Indexed: 12/27/2022] Open
Abstract
Background miRNAs regulate circadian patterns by modulating the biological clocks of animals. In our previous study, we found that the clock gene exhibited a cosine expression pattern in the fallopian tube of chicken uterus. Clock-controlled miRNAs are present in mammals and Drosophila; however, whether there are clock-controlled miRNAs in the chicken uterus and, if so, how they regulate egg-laying rhythms is unclear. In this study, we selected 18 layer hens with similar ovipositional rhythmicity (each of three birds were sacrificed for study per 4 h throughout 24 h); their transcriptomes were scanned to identify the circadian miRNAs and to explore regulatory mechanisms within the uterus of chickens. Results We identified six circadian miRNAs that are mainly associated with several biological processes including ion trans-membrane transportation, response to calcium ion, and enrichment of calcium signaling pathways. Verification of the experimental results revealed that miR-449c-5p exhibited a cosine expression pattern in the chicken uterus. Ca2+-transporting ATPase 4 (ATP2B4) in the plasma membrane is the predicted target gene of circadian miR-449c-5p and is highly enriched in the calcium signaling pathway. We speculated that clock-controlled miR-449c-5p regulated Ca2+ transportation during eggshell calcification in the chicken uterus by targeting ATP2B4. ATP2B4 mRNA and protein were rhythmically expressed in the chicken uterus, and dual-luciferase reporter gene assays confirmed that ATP2B4 was directly targeted by miR-449c-5p. The expression of miR-449c-5p showed an opposite trend to that of ATP2B4 within a 24 h cycle in the chicken uterus; it inhibited mRNA and protein expression of ATP2B4 in the uterine tubular gland cells. In addition, overexpression of ATP2B4 significantly decreased intracellular Ca2+ concentration (P < 0.05), while knockdown of ATP2B4 accelerated intracellular Ca2+ concentrations. We found similar results after ATP2B4 knockdown by miR-449c-5p. Taken together, these results indicate that ATP2B4 promotes uterine Ca2+ trans-epithelial transport. Conclusions Clock-controlled miR-449c-5p regulates Ca2+ transport in the chicken uterus by targeting ATP2B4 during eggshell calcification. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08074-3.
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Affiliation(s)
- Zhifu Cui
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Zhichao Zhang
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Felix Kwame Amevor
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Xiaxia Du
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Liang Li
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Yaofu Tian
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Xincheng Kang
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Gang Shu
- Department of Pharmacy, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, People's Republic of China
| | - Qing Zhu
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Yan Wang
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Diyan Li
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Yao Zhang
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China
| | - Xiaoling Zhao
- Department of Animal Science, Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Apt 211, Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan Province, People's Republic of China.
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Belkameh MM, Sedghi M, Azarfar A. The Effect of Different Levels of Dietary Magnesium on Eggshell Quality and Laying Hen's Performance. Biol Trace Elem Res 2021; 199:1566-1573. [PMID: 32588334 DOI: 10.1007/s12011-020-02259-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/17/2020] [Indexed: 10/23/2022]
Abstract
This study aimed to investigate the effects of different levels of dietary magnesium (Mg) on eggshell quality and laying hen's performance. Four dietary treatments including a commercial-type basal diet containing 3.19 g/kg Mg and three additional diets supplemented with 2, 4, or 6 g/kg magnesium oxide (MgO) to provide 4.03, 4.87, or 5.71 g/kg Mg were used in a completely randomized design. A total of 120 Bovans White layers at the age of 35 weeks were fed with dietary treatments for 8 weeks. Results indicated that increasing concentrations of Mg in the diets significantly increased hen-day egg production and feed intake (P < 0.05). Dietary Mg supplementation had no effect on egg weight, feed conversion ratio, and average daily weight gain. Eggshell weight, thickness, and strength were significantly increased by adding Mg to the diets (P < 0.05). Dietary treatments significantly increased yolk weight (P < 0.05) but decreased yolk color (P < 0.05). Albumen weight, Haugh unit, yolk shape, and egg shape index were similar among the dietary treatments. Eggshell Mg content (g/kg of dry matter) was significantly increased by the inclusion of Mg in the diets. In conclusion, the results of this study indicated that supplementation of Mg up to 5.71 g/kg diet improved eggshell quality and laying hen's performance.
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Affiliation(s)
- Mohammad Mahdi Belkameh
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Mohammad Sedghi
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, Isfahan, Iran.
| | - Arash Azarfar
- Department of Animal Science, Faculty of Agriculture, Lorestan University, Khorramabad, Iran
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Gloux A, Le Roy N, Brionne A, Bonin E, Juanchich A, Benzoni G, Piketty ML, Prié D, Nys Y, Gautron J, Narcy A, Duclos MJ. Candidate genes of the transcellular and paracellular calcium absorption pathways in the small intestine of laying hens. Poult Sci 2019; 98:6005-6018. [PMID: 31328776 PMCID: PMC6771766 DOI: 10.3382/ps/pez407] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/24/2019] [Indexed: 12/31/2022] Open
Abstract
To meet the high calcium (Ca) demand during eggshell biomineralization (2 g of Ca per egg), laying hens develop specific metabolic regulations to maintain Ca homeostasis. The intake of Ca, its solubilization, and absorption capacity are enhanced at sexual maturity (SM). A better knowledge of the intestinal Ca transporters involved in their variations at this stage could indicate new nutritional strategies to enhance Ca digestive utilization. Transcellular Ca absorption pathway and its major player calbindin-D 28 K (CALB1) mediate a saturable transport, which has been extensively described in this model. Conversely, a contribution by the paracellular pathway involving non-saturable Ca transport through intercellular tight junction has also been suggested. The aim of the present study was to identify candidate genes of these two pathways and their patterns of expression, in immature pullets (12, 15, and 17 wk old) and mature laying hens (23 wk old) in the duodenum, jejunum, and ileum. Using RT-qPCR, this study identifies 3 new candidate genes for transcellular, and 9 for paracellular Ca transport. A total of 5 candidates of the transcellular pathway, transient receptor potential cation channels subfamily C member 1 (TRPC1) and M member 7 (TRPM7); CALB1 and ATPase plasma membrane Ca2+ transporting 1 (ATP2B1) and ATPase plasma membrane Ca2+ transporting 2 (ATP2B2) were enhanced with age or after SM in the duodenum, the jejunum or all 3 segments. A total of 4 candidates of the paracellular pathway Claudin 2 (CLDN2) and tight junction proteins 1, 2, and 3 (TJP1, TJP2 and TJP3) increased in the small intestine after SM. Additionally, CALB1, ATP2B2, and CLDN2 were overexpressed in the duodenum or the jejunum or both segments after SM. The enhanced expression of candidate genes of the paracellular Ca pathway after SM, supports that the non-saturable transport could be a mechanism of great importance when high concentrations of soluble Ca are observed in the intestinal content during eggshell formation. Both pathways may work cooperatively in the duodenum and jejunum, the main sites of Ca absorption in laying hens.
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Affiliation(s)
- A Gloux
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - N Le Roy
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - A Brionne
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - E Bonin
- GeT-PlaGe, INRA, Auzeville, 31326 Castanet-Tolosan, France
| | - A Juanchich
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - G Benzoni
- Prospective and Innovation department, Neovia, 56250 Saint-Nolff, France
| | - M-L Piketty
- Service des Explorations Fonctionnelles, G.H. Necker Enfants Malades, 75743 Paris Cedex 15, France, Université Paris Descartes Faculté de Médecine, INSERM U1151
| | - D Prié
- Service des Explorations Fonctionnelles, G.H. Necker Enfants Malades, 75743 Paris Cedex 15, France, Université Paris Descartes Faculté de Médecine, INSERM U1151
| | - Y Nys
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - J Gautron
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - A Narcy
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
| | - M J Duclos
- BOA, INRA, Université de Tours, 37380 Nouzilly, France
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Affiliation(s)
- S.E. Solomon
- Poultry Research Unit, Department of Veterinary Preclinical Studies, University of Glasgow Veterinary School, Beardsen, Glasgow G61 1QH, United Kingdom,
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Li LL, Zhang NN, Gong YJ, Zhou MY, Zhan HQ, Zou XT. Effects of dietary Mn-methionine supplementation on the egg quality of laying hens. Poult Sci 2018; 97:247-254. [PMID: 29077932 DOI: 10.3382/ps/pex301] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 09/20/2017] [Indexed: 02/01/2023] Open
Abstract
This study was conducted to investigate the effects of dietary manganese-methionine (Mn-Met) supplementation on the egg quality of laying hens. A total of 480 Jinghong-1 strain layers aged 53 wk were divided into 5 groups with 6 replicates of 16 layers. Birds in the control group were fed a diet supplemented with 60 mg Mn/kg in the form of MnSO4; the birds in other 4 experimental groups were fed a diet supplemented with 20, 40, 60, and 80 mg Mn/kg as Mn-Met, respectively. Dietary Mn-Met treatments significantly affected (P < 0.05) the albumen height, yolk color, and Haugh unit compared to those of the control diet. The Mn contents in the eggshell increased (P < 0.01) significantly by increasing the Mn-Met supplementation, whereas Mn content in eggshell was triple that in the yolk or albumen. Compared with the 60 mg/kg Mn-Met group, the transverse surface in the control group had (P < 0.01) a greater width of mammillary cones, and there were obvious cracks on the outer surface in the control. There was no difference (P > 0.05) in the eggshell gland (ESG) in the expression of calbindin-D28k (CaBP-D28k) mRNA in response to any diet treatment. In conclusion, dietary Mn-Met supplementation increased internal egg quality and the ultrastructure of the eggshell. Compared to the control, 60 mg/kg Mn-Met treatment resulted in improving egg quality, and 20 mg/kg Mn-Met treatment had similar effects the control treatment had on the egg quality. This indicates that the inorganic Mn can be replaced by the lower concentration of Mn-Met.
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Affiliation(s)
- L L Li
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
| | - N N Zhang
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
| | - Y J Gong
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
| | - M Y Zhou
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
| | - H Q Zhan
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
| | - X T Zou
- Feed Science Institute, College of Animal Science, Zhejiang University, Hangzhou, China, 310058
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Jonchère V, Brionne A, Gautron J, Nys Y. Identification of uterine ion transporters for mineralisation precursors of the avian eggshell. BMC PHYSIOLOGY 2012; 12:10. [PMID: 22943410 PMCID: PMC3582589 DOI: 10.1186/1472-6793-12-10] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 08/16/2012] [Indexed: 11/25/2022]
Abstract
BACKGROUND In Gallus gallus, eggshell formation takes place daily in the hen uterus and requires large amounts of the ionic precursors for calcium carbonate (CaCO3). Both elements (Ca2+, HCO3-) are supplied by the blood via trans-epithelial transport. Our aims were to identify genes coding for ion transporters that are upregulated in the uterine portion of the oviduct during eggshell calcification, compared to other tissues and other physiological states, and incorporate these proteins into a general model for mineral transfer across the tubular gland cells during eggshell formation. RESULTS A total of 37 candidate ion transport genes were selected from our database of overexpressed uterine genes associated with eggshell calcification, and by analogy with mammalian transporters. Their uterine expression was compared by qRTPCR in the presence and absence of eggshell formation, and with relative expression levels in magnum (low Ca2+/HCO3- movement) and duodenum (high rates of Ca2+/HCO3- trans-epithelial transfer). We identified overexpression of eleven genes related to calcium movement: the TRPV6 Ca2+ channel (basolateral uptake of Ca2+), 28 kDa calbindin (intracellular Ca2+ buffering), the endoplasmic reticulum type 2 and 3 Ca2+ pumps (ER uptake), and the inositol trisphosphate receptors type 1, 2 and 3 (ER release). Ca2+ movement across the apical membrane likely involves membrane Ca2+ pumps and Ca2+/Na+ exchangers. Our data suggests that Na+ transport involved the SCNN1 channel and the Na+/Ca2+ exchangers SLC8A1, 3 for cell uptake, the Na+/K+ ATPase for cell output. K+ uptake resulted from the Na+/K+ ATPase, and its output from the K+ channels (KCNJ2, 15, 16 and KCNMA1).We propose that the HCO3- is mainly produced from CO2 by the carbonic anhydrase 2 (CA2) and that HCO3- is secreted through the HCO3-/Cl- exchanger SLC26A9. HCO3- synthesis and precipitation with Ca2+ produce two H+. Protons are absorbed via the membrane's Ca2+ pumps ATP2B1, 2 in the apical membrane and the vacuolar (H+)-atpases at the basolateral level. Our model incorporate Cl- ions which are absorbed by the HCO3-/Cl- exchanger SLC26A9 and by Cl- channels (CLCN2, CFTR) and might be extruded by Cl-/H+ exchanger (CLCN5), but also by Na+ K+ 2 Cl- and K+ Cl- cotransporters. CONCLUSIONS Our Gallus gallus uterine model proposes a large list of ion transfer proteins supplying Ca2+ and HCO3- and maintaining cellular ionic homeostasis. This avian model should contribute towards understanding the mechanisms and regulation for ionic precursors of CaCO3, and provide insight in other species where epithelia transport large amount of calcium or bicarbonate.
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Affiliation(s)
| | | | - Joël Gautron
- INRA, UR83 Recherches Avicoles, F-37380, Nouzilly, France
| | - Yves Nys
- INRA, UR83 Recherches Avicoles, F-37380, Nouzilly, France
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Bar A. Calcium homeostasis and vitamin D metabolism and expression in strongly calcifying laying birds. Comp Biochem Physiol A Mol Integr Physiol 2008; 151:477-90. [DOI: 10.1016/j.cbpa.2008.07.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2008] [Revised: 07/03/2008] [Accepted: 07/07/2008] [Indexed: 12/14/2022]
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Parker SL, Lindsay LA, Herbert JF, Murphy CR, Thompson MB. Expression and localization of Ca2+-ATPase in the uterus during the reproductive cycle of king quail (Coturnix chinensis) and zebra finch (Poephila guttata). Comp Biochem Physiol A Mol Integr Physiol 2008; 149:30-5. [DOI: 10.1016/j.cbpa.2007.09.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Revised: 09/27/2007] [Accepted: 09/27/2007] [Indexed: 11/28/2022]
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Balnave D, el-Khatib NU, Zhang D. Calcium and carbonate supply in the shell gland of hens laying eggs with strong and weak shells and during and after a rest from lay. Poult Sci 1992; 71:2035-40. [PMID: 1470588 DOI: 10.3382/ps.0712035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The concentration of calcium-binding protein (CaBP) and the activities of calcium adenosine triphosphatase (Ca(2+)-ATPase) and carbonic anhydrase (CA) were determined in the shell gland mucosa of hens in two experiments. In Experiment 1, laying hens on a proprietary layer mash were compared with hens rested from lay by the feeding of whole grain barley. In Experiment 2 comparisons were made of laying hens fed the proprietary layer mash and producing eggs with either strong or weak shells. These latter comparisons were also made when the shell gland was quiescent or active with respect to daily eggshell formation. Feeding whole grain barley reduced egg production to zero after 11 days. This reduction in rate of lay was accompanied by significant reductions in all three markers, the effect on Ca(2+)-ATPase and CaBP being less than for CA. Control values were regained between 10 and 16 days after the barley was replaced with the layer mash. Relative shell strength and the physiological status of the shell gland with respect to time of daily eggshell formation had no significant effect on any marker in Experiment 2.
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Affiliation(s)
- D Balnave
- Department of Animal Science, University of Sydney, Camden, New South Wales, Australia
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Wasserman RH, Smith CA, Smith CM, Brindak ME, Fullmer CS, Krook L, Penniston JT, Kumar R. Immunohistochemical localization of a calcium pump and calbindin-D28k in the oviduct of the laying hen. HISTOCHEMISTRY 1991; 96:413-8. [PMID: 1660861 DOI: 10.1007/bf00315999] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The localization of a plasma membrane calcium pump in the oviduct of the laying hen was investigated by immunohistochemical techniques, utilizing a monoclonal antibody (5F10) produced against the human erythrocyte calcium pump. This antibody was shown to react with an epitope of the pump in oviductal tissue, and prominent staining was observed on the microvilli of the tubular gland cells of the hen shell gland (uterus) and the isthmus. The Ca2+ pump was not detectable in the infundibulum or the magnum. Calbindin-D28k, also localized by immunohistochemical means, was observed to be present in the tubular gland cells of the shell gland and the distal isthmus (adjacent to shell gland) but not in either the proximal isthmus (adjacent to the magnum), the magnum or the infundibulum. The localization of the Ca2+ pump in the oviduct corresponds to known sites of mineral deposition during egg shell formation. The distribution of calbindin-D28k differed, co-localizing with the Ca2+ pump in the shell gland and distal isthmus but not in the proximal isthmus. This might reflect a greater rate of active Ca2+ secretion in the distal isthmus and shell gland as compared to the proximal isthmus.
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Affiliation(s)
- R H Wasserman
- Department of Physiology, New York State College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
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Abstract
The plasma membrane fraction of chicken osteoclasts was purified utilizing 20% continuous Percoll gradients. Biochemical marker enzyme analysis (ouabain-sensitive Na+,K(+)-ATPase and 5'-nucleotidase) indicated that plasma membrane enrichment was 11.87-fold and 7.25-fold, respectively, and contamination with mitochondria, endoplasmic reticulum, and lysosomes was low as determined by succinic dehydrogenase, NADH dehydrogenase, and N-acetylglucosaminidase activities, respectively. SDS latency of Na+,K(+)-ATPase and 5'-nucleotidase activities of the isolated plasma membranes revealed that 43-50% of vesicles were sealed, with 10-16% in the inside-out orientation, depending on the membrane fraction used. Electron microscopy confirmed the vesicular nature of the plasma membrane fraction. The plasma membrane Ca2(+)-ATPase had a high-affinity (KCa = 0.22 microM; Vmax = 0.16 mumol/mg per min) and a low-affinity (KCa = 148 microM; Vmax = 0.37 mumol/mg per min) component. Calmodulin (0.12 microM) had no effect on Ca2(+)-ATPase activity. However, trifluoperazine (0.1 mM), a calmodulin antagonist, strongly inhibited especially the high-affinity component of the enzyme. Vanadate and lanthanum also caused inhibition. In the presence of CDTA, a potent Ca2+ and Mg2+ chelating agent, high-affinity Ca2(+)-ATPase activity was abolished, indicating that trace Mg2+ was essential for activity. The Ca2(+)-ATPase substrate curve using ATP showed a high-affinity (Km = 12.3 microM; Vmax = 0.022 mumol/mg per min) and a low-affinity (Km = 43.8 microM; Vmax = 0.278 mumol/mg per min) component. These results demonstrate that osteoclasts have a plasma membrane Ca2(+)-ATPase with characteristics similar to the enzyme responsible for active calcium extrusion in other cells.
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Affiliation(s)
- P J Bekker
- Department of Molecular and Cell Biology, Pennsylvania State University, University Park 16802
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Castaldo DJ, Maurice DV. Shell gland adenosine triphosphatase in hens producing strong and weak egg shells. Br Poult Sci 1990; 31:225-9. [PMID: 2141292 DOI: 10.1080/00071669008417250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
1. Two groups of 4 hens at the end of their first production cycle were classified as producers of strong egg shells (greater than 70 mg/cm2) and weak egg shells (less than 60 mg/cm2) on the basis of shell surface density. 2. Shell gland mucosa was homogenised and fractionated into nuclear, mitochondrial, microsomal and supernatant fractions, and ATPase activity determined. 3. ATPase activity in the total homogenate was significantly greater for hens producing strong shells (SES) than for hens producing weak shells (WES). 4. ATPase activities detected in the nuclear fraction, mitochondria and microsomes were significantly greater for SES than for WES birds.
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Affiliation(s)
- D J Castaldo
- Department of Poultry Science, Clemson University, South Carolina 29634-0379
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14
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Watanabe E, Kobayashi S, Terashima Y, Itoh H. Adenosine triphosphatase in the uterus and duodenum of chicken hens during eggshell formation. Poult Sci 1989; 68:564-8. [PMID: 2526326 DOI: 10.3382/ps.0680564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Plasma calcium concentration and uterine and duodenal adenosine triphosphatase (ATPase) activities were determined during shell formation for high (H) and low (L) shell strength lines of hens selected from the last of four consecutive generations. The H and L lines were divided into three groups according to shell formation at 0, 15, and 22 h following oviposition. Plasma total calcium was determined from blood samples collected from the common carotid artery. Activity of ATPase was determined in uterine and duodenal mucosa. Shell strength, shell weight, percentage of shell per egg and shell thickness of the H line hens significantly exceeded those of the L line. During shell formation, no significant fluctuation in plasma calcium levels was observed within a line, but overall mean plasma calcium concentrations were higher in the H line than L line. Uterine ATPase activity increased with time after oviposition in both lines, with that of the H line being greater. Duodenal ATPase activity of H line hens remained fairly constant throughout the period, but this value showed fluctuations in the L line hens. It thus appears that laying hens with high and low shell strength may vary in their ability to use calcium for shell formation.
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Affiliation(s)
- E Watanabe
- Faculty of Animal Science, Kitasato University, Aomori, Japan
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15
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Castaldo DJ, Maurice DV. Characterization of shell gland lipids from chickens (Gallus domesticus) producing strong or weak egg shells. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1989; 94:521-4. [PMID: 2620496 DOI: 10.1016/0305-0491(89)90191-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
1. The reduction in egg shell strength in hens at the end of the first reproductive cycle was not associated with abnormal uterine or body fat accumulation. 2. The phosphatidylcholine concentration was greater in the shell glands of hens producing strong egg shells compared to that of producing weak egg shells. 3. Differences were not detected in the total lipid or cholesterol concentrations or the fatty acid profiles of phosphatidylcholine or phosphatidylethanolamine fractions. 4. Following an induced molt, the fatty acid profile of the total lipid fraction of the shell gland was altered with a decrease in stearic acid and an increase in oleic acid. 5. The results demonstrate that alterations in egg shell strength are mainly associated with changes in shell gland phospholipid polar head group composition and not with changes in phospholipid fatty acid profile or cholesterol concentration.
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Affiliation(s)
- D J Castaldo
- Department of Poultry Science, Clemson University, SC 29634-0379
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16
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CASTALDO D, MAURICE D. Phospholipid Content of the Chicken Shell Gland and Its Relationship to Egg Shell Strength. Poult Sci 1988. [DOI: 10.3382/ps.0670427] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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17
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Tuan RS, Knowles KA. Calcium-activated ATPase of the chick embryonic chorioallantoic membrane. Identification, developmental expression, and topographic relationship with calcium-binding protein. J Biol Chem 1984. [DOI: 10.1016/s0021-9258(17)43210-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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18
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Flik G, Wendelaar Bonga SE, Fenwick JC. Ca2+-dependent phosphatase and Ca2+-dependent ATPase activities in plasma membranes of eel gill epithelium—II. Evidence for transport high-affinity Ca2+-ATPase. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0305-0491(84)90069-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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