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Xu L, Li N, Miao D, Huang C, Chen L, Yang H, Wang Z. Early manifestation of hypophosphatemic rickets in goslings: a potential role of insufficient muscular adenosine triphosphate in motility impairment of early P-deficient geese. Poult Sci 2024; 103:103736. [PMID: 38677064 PMCID: PMC11066551 DOI: 10.1016/j.psj.2024.103736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/29/2024] Open
Abstract
We aimed to determine the onset time of hypophosphatemic rickets and investigate the mechanism of motility impairment through adenosine triphosphate (ATP) production in goslings. Two hundred and sixteen 1-day-old male Jiangnan white geese were randomly divided into 3 groups, with 6 replicates and 12 geese per replicate. Birds were fed on 3 diets: a control diet (nonphytic phosphorus, NPP, 0.38%), a P-deficient diet (PD; NPP, 0.08%), and a high P diet (HP; NPP, 0.80%) for 14 d. Subsequently, all birds were shifted to the control diet for an additional 14 d. The cumulative incidence of lameness increased significantly (P < 0.01) starting on d 4, reaching over 80% on d 7 and 100% on d 12 in the PD group. Drinking and eating frequency decreased from d 4 and d 5, respectively, in the PD group compared to the other groups (most P < 0.01). The PD group exhibited shorter and narrower beaks, higher (worse) curvature scores of the beak and costochondral junctions, swelling caput costae, and dirtier feathers since d 4, in contrast to the control and HP groups (most P < 0.01). The HP had bigger (P < 0.05) beak and sternum sizes than the control groups on d 4 to 11. Leg muscle ATP levels were lower (P < 0.01 or 0.05) on d 4 to 11; in contrast, adenosine diphosphate (d 7-11) was higher in PD compared to the control (P < 0.05). Leg muscle ATP level had positive linear (R2 > 0.40) correlations (r > 0.60) with eating and drinking frequencies on d 7 and 11 (P < 0.01). Bone stiffness, feather cleanliness, and ATP levels recovered (P > 0.05) to the control level, whereas bone size did not recover (P < 0.05) in PD and HP after eating the control diet for 2 wk. The onset time of hypophosphatemic rickets was around 4 d in goslings, and insufficient leg muscle ATP was related to the impaired motility observed in early P-deficient geese.
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Affiliation(s)
- Lei Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Ning Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Dongzhi Miao
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Chunhui Huang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Lei Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Haiming Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Zhiyue Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225009, China.
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Wojakowska A, Pietrowska M, Widlak P, Dobrowolski D, Wylęgała E, Tarnawska D. Metabolomic Signature Discriminates Normal Human Cornea from Keratoconus-A Pilot GC/MS Study. Molecules 2020; 25:molecules25122933. [PMID: 32630577 PMCID: PMC7356237 DOI: 10.3390/molecules25122933] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/15/2020] [Accepted: 06/22/2020] [Indexed: 02/07/2023] Open
Abstract
The molecular etiology of keratoconus (KC), a pathological condition of the human cornea, remains unclear. The aim of this work was to perform profiling of metabolites and identification of features discriminating this pathology from the normal cornea. The combination of gas chromatography and mass spectrometry (GC/MS) techniques has been applied for profiling and identification of metabolites in corneal buttons from 6 healthy controls and 7 KC patients. An untargeted GC/MS-based approach allowed the detection of 377 compounds, including 46 identified unique metabolites, whose levels enabled the separation of compared groups of samples in unsupervised hierarchical cluster analysis. There were 13 identified metabolites whose levels differentiated between groups of samples. Downregulation of several carboxylic acids, fatty acids, and steroids was observed in KC when compared to the normal cornea. Metabolic pathways associated with compounds that discriminated both groups were involved in energy production, lipid metabolism, and amino acid metabolism. An observed signature may reflect cellular processes involved in the development of KC pathology, including oxidative stress and inflammation.
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Affiliation(s)
- Anna Wojakowska
- European Centre for Bioinformatics and Genomics, Institute of Bioorganic Chemistry Polish Academy of Sciences, Noskowskiego12/14, 61-704 Poznan, Poland;
| | - Monika Pietrowska
- Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Wybrzeze Armii Krajowej 15, 44-102 Gliwice, Poland; (M.P.); (P.W.)
| | - Piotr Widlak
- Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice Branch, Wybrzeze Armii Krajowej 15, 44-102 Gliwice, Poland; (M.P.); (P.W.)
| | - Dariusz Dobrowolski
- Department of Ophthalmology & Tissue and Cells Bank, St. Barbara Hospital, Trauma Center, Plac Medyków 1, 41-200 Sosnowiec, Poland;
- Chair and Clinical Department of Ophthalmology, Division of Medical Science in Zabrze, Medical University of Silesia, Panewnicka 65, 40-760 Katowice, Poland;
| | - Edward Wylęgała
- Chair and Clinical Department of Ophthalmology, Division of Medical Science in Zabrze, Medical University of Silesia, Panewnicka 65, 40-760 Katowice, Poland;
- Department of Ophthalmology, District Railway Hospital, Panewnicka 65, 40-760 Katowice, Poland
| | - Dorota Tarnawska
- Department of Ophthalmology, District Railway Hospital, Panewnicka 65, 40-760 Katowice, Poland
- Faculty of Science and Technology, Silesian Center for Education and Interdisciplinary Research, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
- Correspondence:
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Tan SZ, Begley P, Mullard G, Hollywood KA, Bishop PN. Introduction to metabolomics and its applications in ophthalmology. Eye (Lond) 2016; 30:773-83. [PMID: 26987591 DOI: 10.1038/eye.2016.37] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 01/20/2016] [Indexed: 11/09/2022] Open
Abstract
Metabolomics is the study of endogenous and exogenous metabolites in biological systems, which aims to provide comparative semi-quantitative information about all metabolites in the system. Metabolomics is an emerging and potentially powerful tool in ophthalmology research. It is therefore important for health professionals and researchers involved in the speciality to understand the basic principles of metabolomics experiments. This article provides an overview of the experimental workflow and examples of its use in ophthalmology research from the study of disease metabolism and pathogenesis to identification of biomarkers.
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Affiliation(s)
- S Z Tan
- Centre for Ophthalmology and Vision Sciences, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Department of Ophthalmology, Manchester Royal Eye Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - P Begley
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - G Mullard
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
| | - K A Hollywood
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK.,Faculty of Life Science, University of Manchester, Manchester, UK
| | - P N Bishop
- Centre for Ophthalmology and Vision Sciences, Institute of Human Development, Faculty of Medical and Human Sciences, University of Manchester, Manchester, UK.,Department of Ophthalmology, Manchester Royal Eye Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK.,Centre for Advanced Discovery and Experimental Therapeutics (CADET), Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Sciences Centre, Manchester, UK
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Lass JH, Benetz BA, Gal RL, Kollman C, Raghinaru D, Dontchev M, Mannis MJ, Holland EJ, Chow C, McCoy K, Price FW, Sugar A, Verdier DD, Beck RW. Donor age and factors related to endothelial cell loss 10 years after penetrating keratoplasty: Specular Microscopy Ancillary Study. Ophthalmology 2014; 120:2428-2435. [PMID: 24246826 DOI: 10.1016/j.ophtha.2013.08.044] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/30/2013] [Accepted: 08/30/2013] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To examine the effect of donor age and other perioperative factors on long-term endothelial cell loss after penetrating keratoplasty (PKP). DESIGN Multicenter, prospective, double-masked clinical trial. PARTICIPANTS We included 176 participants from the Cornea Donor Study cohort who had not experienced graft failure ≥ 10 years after PKP for a moderate risk condition (principally Fuchs' dystrophy or pseudophakic/aphakic corneal edema). METHODS Corneas from donors 12 to 75 years old were assigned to participants using a randomized approach, without respect to recipient factors. Surgery and postoperative care were performed according to the surgeons' usual routines. Images of the central endothelium were obtained preoperatively and at intervals for 10 years postoperatively. Images were analyzed by a central image analysis reading center to determine endothelial cell density (ECD). MAIN OUTCOME MEASURES Endothelial cell density at 10 years. RESULTS Among study participants with a clear graft at 10 years, the 125 who received a cornea from a donor 12 to 65 years old experienced a median cell loss of 76%, resulting in a 10-year median ECD of 628 cells/mm(2) (interquartile range [IQR], 522-850 cells/mm(2)), whereas the 51 who received a cornea from a donor 66 to 75 years old experienced a cell loss of 79%, resulting in a median 10-year ECD of 550 cells/mm(2) (IQR, 483-694 cells/mm(2); P adjusted for baseline ECD = 0.03). In addition to younger donor age, higher ECD values were significantly associated with higher baseline ECD (P<0.001) and larger donor tissue size (P<0.001). Forty-two of the 176 participants (24%) had an ECD of <500 cells/mm(2) at 10 years and only 24 (14%) had an ECD of >1000 cells/mm(2). CONCLUSIONS Substantial cell loss occurs in eyes with a clear graft 10 years after PKP, with the rate of cell loss being slightly greater with older donor age. Greater preoperative ECD and larger donor tissue size are associated with higher ECD at 10 years.
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Affiliation(s)
- Jonathan H Lass
- Case Western Reserve University and University Hospitals Eye Institute, Cleveland, Ohio.
| | - Beth Ann Benetz
- Case Western Reserve University and University Hospitals Eye Institute, Cleveland, Ohio
| | - Robin L Gal
- Jaeb Center for Health Research, Tampa, Florida
| | | | | | | | - Mark J Mannis
- University of California Davis, Sacramento, California
| | - Edward J Holland
- Department of Ophthalmology and Visual Sciences, Cincinnati Eye Institute, Cincinnati, Ohio
| | | | | | | | - Alan Sugar
- W.K. Kellogg Eye Center, University of Michigan, Ann Arbor, Michigan
| | | | - Roy W Beck
- Jaeb Center for Health Research, Tampa, Florida
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Early TA, Glonek T. Lake Michigan sponge phosphatic metabolite variations with habitat: a 31P nuclear magnetic resonance study. Comp Biochem Physiol B Biochem Mol Biol 1999. [DOI: 10.1016/s0305-0491(99)00068-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Harper CL, Boulton ME, Marcyniuk B, Tullo AB, Ridgway AE. Endothelial viability of organ-cultured corneas following penetrating keratoplasty. Eye (Lond) 1999; 12 ( Pt 5):834-8. [PMID: 10070520 DOI: 10.1038/eye.1998.214] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To assess endothelial integrity following corneal transplantation using human corneas stored in organ culture in the Manchester Eye Bank. METHODS A prospective study was undertaken on 24 patients who had received full-thickness corneal grafts using corneas stored in organ culture. The donor corneal endothelium was photographed prior to transplantation using light microscopy. Specular microscopy and ultrasonic pachometry were performed at 30 days (+/- 3 days), 12 weeks (+/- 1 week), 26 weeks (+/- 2 weeks) and 52 weeks (+/- 4 weeks) following corneal transplantation. The following cell parameters were measured: density, area, coefficient of variation (CV) for area, perimeter, diameter, form factor and corneal thickness. RESULTS One year after corneal transplantation there was a statistically significant decrease in endothelial cell density (-39.4%), and a statistically significant increase in endothelial cell area (+94.4%), perimeter (+36.1%), diameter (+57.1%) and form factor (+5.8%). However, no significant changes were seen in CV or corneal thickness with respect to time after transplantation. (There were no significant changes in endothelial cell parameters and corneal thickness for 12 control subjects.) CONCLUSIONS Endothelial cell loss occurs at an accelerated rate from corneal transplants. This highlights the need for improving corneal endothelial viability during and after storage in order to improve the chances of longer-term survival of the transplanted cornea.
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Affiliation(s)
- C L Harper
- University Department of Ophthalmology, Manchester, UK
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