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Avilés R, Delgadillo JA, Flores JA, Duarte G, Vielma J, Flores MJ, Petrovski K, Zarazaga LA, Hernández H. Melatonin administration during the dry period stimulates subsequent milk yield and weight gain of offspring in subtropical does kidding in summer. J Dairy Sci 2019; 102:11536-11543. [PMID: 31563308 DOI: 10.3168/jds.2019-16836] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 08/21/2019] [Indexed: 11/19/2022]
Abstract
In the present experiment, we tested the hypothesis that in does kidding in summer, melatonin administration during dry period is galactopoietic for the subsequent lactation and results in improved growth of their suckling kids. Twenty-five multiparous pregnant creole does were enrolled into a randomized complete block design during their dry period in the 49 d prepartum, and under natural long photoperiods around the summer solstice, pregnant does either received 2 subcutaneous ear implants (18 mg) of melatonin (MEL, n = 10) or served as nonimplanted controls (CONT, n = 15). During the first 14 wk of subsequent lactation (suckling and milking periods), MEL does yielded more milk than CONT does. Throughout subsequent lactation, milk composition was not affected by treatment. In MEL does, peripheral triiodothyronine levels peaked at 2 wk of lactation, remaining higher than in CONT does. The mean daily weight gain was higher in MEL compared with CONT kids and was also higher in males than females, and for males, was positively correlated with milk yield. The current data support our hypothesis that melatonin during the prepartum period is galactopoietic in suckling does.
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Affiliation(s)
- R Avilés
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico
| | - J A Delgadillo
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico
| | - J A Flores
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico
| | - G Duarte
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico
| | - J Vielma
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico
| | - M J Flores
- Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Campo Experimental La Laguna, Matamoros 27440, Coahuila, Mexico
| | - K Petrovski
- Davies Research Centre, School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy 5371, South Australia, Australia
| | - L A Zarazaga
- Departamento de Ciencias Agroforestales, Universidad de Huelva, Palos de la Frontera, 21810, Huelva, Spain
| | - H Hernández
- Centro de Investigación en Reproducción Caprina, Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico; Departamento de Ciencias Básicas, Universidad Autónoma Agraria Antonio Narro, Torreón 27054, Coahuila, Mexico.
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Chen X, Zheng X, Ali S, Guo M, Zhong R, Chen Z, Zhang Y, Qing H, Deng Y. Isolation and Sequencing of Salsolinol Synthase, an Enzyme Catalyzing Salsolinol Biosynthesis. ACS Chem Neurosci 2018; 9:1388-1398. [PMID: 29602279 DOI: 10.1021/acschemneuro.8b00023] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Salsolinol (1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline), a derivate of dopamine, is suspected to be the most probable neurotoxin in the degeneration of dopaminergic neurons. Numerous hypotheses regarding its pathophysiological roles have been raised, especially related to Parkinson's disease and alcohol addiction. In the mammalian brain, salsolinol may be enzymatically synthesized by salsolinol synthase from dopamine and acetaldehyde. However, the direct evidence of its biosynthesis was still missing. In this study, we purified salsolinol synthase from rat brain by a systematical procedure involving acid precipitation, ultrafiltration, and hydrophilic interaction chromatography. The molecular weight of salsolinol synthase determined by MALDI-TOF MS is 8622.29 Da, comprising 77 amino acids (MQIFVKTLTG KTITLEVEPS DTIKNVKAKI QDKEGIPPDQ QRLIFAGKQL EDGRTLSDYN IQKKSTLHLV LRLRVDY). Homology analysis showed that the enzyme is a ubiquitin-like protein, with a difference of four amino acids, which suggests it is a novel protein. After it was overexpressed in eukaryotic cells, the production of salsolinol was significantly increased as compared with control, confirming the catalytic function of this enzyme. To our knowledge, it is the first systematic purification and sequencing of salsolinol synthase. Together, this work reveals a formerly anonymous protein and urges further exploration of its possible prognostic value and implications in Parkinson's disease and other related disorders.
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Affiliation(s)
- Xuechai Chen
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
| | - Xiaotong Zheng
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
| | - Sakhawat Ali
- College of Life Science and Bioengineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
| | - Minjun Guo
- College of Life Science and Bioengineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
| | - Rugang Zhong
- Beijing Key Laboratory of Environmental and Viral Oncology, College of Life Science and Bioengineering, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China
| | - Zixuan Chen
- School of Life Science and Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Yongqian Zhang
- School of Life Science and Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Hong Qing
- School of Life Science and Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
| | - Yulin Deng
- School of Life Science and Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, People’s Republic of China
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Hashizume T, Watanabe R, Inaba Y, Sawai K, Fülöp F, Nagy GM. Hypothalamic dopamine is required for salsolinol-induced prolactin secretion in goats. Anim Sci J 2017; 88:1588-1594. [DOI: 10.1111/asj.12816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/08/2017] [Indexed: 11/27/2022]
Affiliation(s)
| | | | - Yuki Inaba
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Ken Sawai
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; Faculty of Pharmacy; University of Szeged; Szeged Hungary
| | - György Miklos Nagy
- Department of Anatomy; Ross University School of Medicine; Roseau Commonwealth of Dominica
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Inaba Y, Kato Y, Itou A, Chiba A, Sawai K, Fülöp F, Nagy GM, Hashizume T. Effects of extracerebral dopamine on salsolinol- or thyrotropin-releasing hormone-induced prolactin (PRL) secretion in goats. Anim Sci J 2016; 87:1522-1527. [DOI: 10.1111/asj.12586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 10/28/2015] [Accepted: 11/19/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Inaba
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Yuki Kato
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Azumi Itou
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Aoi Chiba
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Ken Sawai
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; Faculty of Pharmacy, University of Szeged; Szeged Hungary
| | - György Miklos Nagy
- Neuromorphological and Neuroedocrine Research Laboratory; Department of Human Morphology, Hungarian Academy of Science and Semmelweis University; Budapest Hungary
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Jin J, Hara S, Sawai K, Fülöp F, Nagy GM, Hashizume T. Effects of hypothalamic dopamine (DA) on salsolinol (SAL)-induced prolactin (PRL) secretion in male goats. Anim Sci J 2013; 85:461-7. [PMID: 24329779 DOI: 10.1111/asj.12157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 09/05/2013] [Indexed: 02/03/2023]
Abstract
The aim of the present study was to clarify the effects of hypothalamic dopamine (DA) on salsolinol (SAL)-induced prolactin (PRL) release in goats. The PRL-releasing response to an intravenous (i.v.) injection of SAL was examined after treatment with augmentation of central DA using carbidopa (carbi) and L-dopa in male goats under 8-h (8 h light, 16 h dark) or 16-h (16 h light, 8 h dark) photoperiod conditions. The carbi and L-dopa treatments reduced basal PRL concentrations in the 16-h photoperiod group (P < 0.05), while a reduction was not observed in the 8-h photoperiod group. The mean basal plasma PRL concentration in the control group for the 8-h photoperiod was lower than that for the 16-h photoperiod (P < 0.05). SAL significantly stimulated the release of PRL promptly after the injection in both the 8- and 16-h photoperiod groups (P < 0.05). PRL-releasing responses for the 16-h photoperiod were greater than those for the 8-h photoperiod (P < 0.05). The carbi and L-dopa treatments blunted SAL-induced PRL release in both the 8- and 16-h photoperiods (P < 0.05). These results indicate that hypothalamic DA blunts the SAL-induced release of PRL in male goats, regardless of the photoperiod, which suggests that both SAL and DA are involved in regulating the secretion of PRL in goats.
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Affiliation(s)
- Jin Jin
- Faculty of Agriculture, Iwate University, Morioka, Japan
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7
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Jin J, Sawai K, Hashizume T. Effects of photoperiod on secretory patterns of growth hormone in adult male goats. Anim Sci J 2013; 84:790-7. [DOI: 10.1111/asj.12073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/24/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Jin Jin
- Faculty of Agriculture; Iwate University; Morioka Japan
| | - Ken Sawai
- Faculty of Agriculture; Iwate University; Morioka Japan
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