1
|
Outskouni Z, Christodoulou C, Goutas A, Kyriazis ID, Paraskevopoulou A, Laliotis GP, Matsakidou A, Gogas A, Trachana V. Cryptomphalus aspersa Egg Extract Protects against Human Stem Cell Stress-Induced Premature Senescence. Int J Mol Sci 2024; 25:3715. [PMID: 38612526 PMCID: PMC11011511 DOI: 10.3390/ijms25073715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Cellular senescence is a tightly regulated pathophysiologic process and is caused by replicative exhaustion or external stressors. Since naturally derived bioactive compounds with anti-ageing properties have recently captured scientific interest, we analysed the anti-ageing and antioxidant efficacy of Cryptomphalus aspersa egg extract (CAEE). Its effects on stemness, wound-healing properties, antioxidant defense mechanisms, and DNA damage repair ability of Human Wharton's jelly mesenchymal stem cells (WJ-MSCs) were analysed. Our results revealed that CAEE fortifies WJ-MSCs stemness, which possibly ameliorates their wound-healing ability. Additionally, we show that CAEE possesses a strong antioxidant capacity as demonstrated by the elevation of the levels of the basic antioxidant molecule, GSH, and the induction of the NRF2, a major antioxidant regulator. In addition, CAEE alleviated cells' oxidative stress and therefore prevented stress-induced premature senescence (SIPS). Furthermore, we demonstrated that the prevention of SIPS could be mediated via the extract's ability to induce autophagy, as indicated by the elevation of the protein levels of all basic autophagic molecules and the increase in formation of autophagolysosomes in CAEE-treated WJ-MSCs. Moreover, CAEE-treated cells exhibited decreased Caveolin-1 levels. We propose that Cryptomphalus aspersa egg extract comprises bioactive compounds that can demonstrate strong antioxidant/anti-ageing effects by regulating the Caveolin-1-autophagy-senescence molecular axis.
Collapse
Affiliation(s)
- Zozo Outskouni
- Department of Biology, Faculty of Medicine, University of Thessaly, 41500 Larisa, Greece; (Z.O.); (C.C.); (A.G.); (I.D.K.)
| | - Christina Christodoulou
- Department of Biology, Faculty of Medicine, University of Thessaly, 41500 Larisa, Greece; (Z.O.); (C.C.); (A.G.); (I.D.K.)
| | - Andreas Goutas
- Department of Biology, Faculty of Medicine, University of Thessaly, 41500 Larisa, Greece; (Z.O.); (C.C.); (A.G.); (I.D.K.)
- Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Ioannis D. Kyriazis
- Department of Biology, Faculty of Medicine, University of Thessaly, 41500 Larisa, Greece; (Z.O.); (C.C.); (A.G.); (I.D.K.)
| | - Adamantini Paraskevopoulou
- Laboratory of Food Chemistry & Technology, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.P.); (A.M.)
| | - George P. Laliotis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece;
| | - Anthia Matsakidou
- Laboratory of Food Chemistry & Technology, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.P.); (A.M.)
| | | | - Varvara Trachana
- Department of Biology, Faculty of Medicine, University of Thessaly, 41500 Larisa, Greece; (Z.O.); (C.C.); (A.G.); (I.D.K.)
| |
Collapse
|
2
|
Papadaki K, Laliotis GP, Koutsouli P, Bizelis I. Attention bias and novel object test in rams (Ovis aries) under intensive farming. Behav Processes 2024; 215:104993. [PMID: 38246264 DOI: 10.1016/j.beproc.2024.104993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 12/12/2023] [Accepted: 01/17/2024] [Indexed: 01/23/2024]
Abstract
Affective states are long lasting mood states resulting from an accumulation of experiences. The knowledge of the affective state of animals can significantly help maintain and/or increase animal welfare. The aim of the study was to recognize the affective state of 13 adult rams reared under an intensive system and to further associate their affective state with hierarchy, sociability order and maintenance and social behaviour. The affective state was estimated by exposing them to an attention bias test and two novel object tests. Individuals with negative affective states performed reduced head hanging (p = 0.014), reduced agonistic behaviour (p = 0.033), increased social proximity (p = 0.009) and received less affiliative behaviours (p = 0.006). The study estimated the affective state of the rams and indicated easily recognizable maintenance and social behaviours correlated with negative affective state. Such behaviours could increase the awareness of the animals' welfare and thus improve management practices.
Collapse
Affiliation(s)
- Kallirroi Papadaki
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| | - George P Laliotis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece.
| | - Panagiota Koutsouli
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| | - Iosif Bizelis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| |
Collapse
|
3
|
Laliotis GP, Papadaki K, Bizelis I. Ovine vocal individuality expression by ewes and lambs at a late (40 days) post-partum time point. J Acoust Soc Am 2023; 153:751. [PMID: 36859133 DOI: 10.1121/10.0017075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
Recognizing the identity of conspecifics is important for survival and social interactions. In sheep, vocal individuality enhances postnatal recognition and strengthens the mother-offspring bond. Although previous studies report vocal individuality in an early postnatal period (3-15 days of life), scarce information exists on whether individuality occurs at a later postnatal time point. The aim of the study was to identify whether individuality in acoustic cues is expressed in ewes' and their lambs' bleats at 40 days post-partum. Dairy ewes (N = 21) and their suckling offspring (n = 30) were isolated separately without hearing or seeing each other, and vocalizations were recorded. Different approaches for estimating individuality on 18 determined acoustic parameters were implemented. All parameters showed individuality, but higher individuality appeared in those related with source and spectral characteristics. A discriminant function analysis showed similar levels of individuality between ewes and lambs, but lower than that reported in an earlier postnatal time, suggesting that ewes and lambs do not need strong individualized cues at the examined time point. In both cases, jitter was the only common parameter, suggesting its importance. Distinctive cues were noted between siblings. Ewes displayed vocal individuality at their dry season (a later time point than suckling period), which was based on amplitude-related acoustic parameters.
Collapse
Affiliation(s)
- George P Laliotis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| | - Kallirroi Papadaki
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| | - Iosif Bizelis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 75 Iera Odos, GR11855 Athens, Greece
| |
Collapse
|
4
|
Papadaki K, Laliotis GP, Koutsouli P, Bizelis I. Association of personality traits with maintenance and social behaviour of rams (Ovis aries). Small Rumin Res 2023. [DOI: 10.1016/j.smallrumres.2023.106928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
5
|
Papadaki K, Laliotis GP, Koutsouli P, Pafilis P, Bizelis I. Do sheep (
Ovis aries
) perform third‐party interventions? Ethology 2022. [DOI: 10.1111/eth.13326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kallirroi Papadaki
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science Agricultural University of Athens Athens Greece
| | - George P. Laliotis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science Agricultural University of Athens Athens Greece
| | - Panagiota Koutsouli
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science Agricultural University of Athens Athens Greece
| | - Panayiotis Pafilis
- Section of Zoology – Marine Biology, Department of Biology National & Kapodistrian University of Athens Athens Greece
| | - Iosif Bizelis
- Laboratory of Animal Breeding and Husbandry, Department of Animal Science Agricultural University of Athens Athens Greece
| |
Collapse
|
6
|
Antonopoulos D, Vougiouklaki D, Laliotis GP, Tsironi T, Valasi I, Chatzilazarou A, Halvatsiotis P, Houhoula D. Identification of Polymorphisms of the CSN2 Gene Encoding β-Casein in Greek Local Breeds of Cattle. Vet Sci 2021; 8:vetsci8110257. [PMID: 34822630 PMCID: PMC8625921 DOI: 10.3390/vetsci8110257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/09/2021] [Accepted: 10/26/2021] [Indexed: 12/31/2022] Open
Abstract
This e research focused on the detection and identification of genetic polymorphisms in exon 7 of the β-casein CSN2 gene in blood samples from Greek Holstein cows and from local breeds of cattle, such as Vrachykeratiki, Katerinis, and Sykias. For this purpose, DNA was isolated from 780 blood samples obtained from Greek Holstein cows, 86 from three local breeds of cattle, namely Brachyceros, Katerinis, and Sykias, and 14 from Greek buffalo. The desired region of exon 7 was amplified by PCR, resulting in 121 and 251 bp products in bovine and buffalo samples. The PCR product was digested with restriction fragment length polymorphism (RFLP) on agarose gels. The restriction enzymes DdeI and TaqI were used. All of the blood samples had the amplified size. The results showed that 74.4% of the Greek Holstein cows had the A2A2 β-casein genotype, the three native breads Vrachykeratiki had 57.7%, and the other two had 100% of the A2A2 β-casein. From the 14 Greek buffalo, 100% had the A2A2 β-casein.
Collapse
Affiliation(s)
- Dionysios Antonopoulos
- Department of Food Science and Technology, Faculty of Food Sciences, University of West Attica, 12243 Athens, Greece; (D.A.); (D.V.)
| | - Despina Vougiouklaki
- Department of Food Science and Technology, Faculty of Food Sciences, University of West Attica, 12243 Athens, Greece; (D.A.); (D.V.)
| | - George P. Laliotis
- Department of Animal Science, Agricultural University of Athens, 11855 Athens, Greece;
| | - Theofania Tsironi
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece;
| | - Irene Valasi
- Department of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece;
| | - Archodoula Chatzilazarou
- Department of Wine, Vine and Beverage Sciences, Faculty of Food Sciences, University of West Attica, 12243 Athens, Greece;
| | - Panagiotis Halvatsiotis
- 2nd Propaedeutic Department of Internal Medicine, Medical School, National and Kapodistrian University of Athens, “ATTIKON” University Hospital, 12462 Chaidari, Greece;
| | - Dimitra Houhoula
- Department of Food Science and Technology, Faculty of Food Sciences, University of West Attica, 12243 Athens, Greece; (D.A.); (D.V.)
- Correspondence:
| |
Collapse
|
7
|
Papadaki K, Laliotis GP, Bizelis I. Acoustic variables of high-pitched vocalizations in dairy sheep breeds. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
8
|
Papachristou D, Koutsouli P, Laliotis GP, Kunz E, Upadhyay M, Seichter D, Russ I, Gjoko B, Kostaras N, Bizelis I, Medugorac I. Genomic diversity and population structure of the indigenous Greek and Cypriot cattle populations. Genet Sel Evol 2020; 52:43. [PMID: 32727375 PMCID: PMC7391618 DOI: 10.1186/s12711-020-00560-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 07/15/2020] [Indexed: 11/17/2022] Open
Abstract
Background The indigenous cattle populations from Greece and Cyprus have decreased to small numbers and are currently at risk of extinction due to socio-economic reasons, geographic isolation and crossbreeding with commercial breeds. This study represents the first comprehensive genome-wide analysis of 10 indigenous cattle populations from continental Greece and the Greek islands, and one from Cyprus, and compares them with 104 international breeds using more than 46,000 single nucleotide polymorphisms (SNPs). Results We estimated several parameters of genetic diversity (e.g. heterozygosity and allelic diversity) that indicated a severe loss of genetic diversity for the island populations compared to the mainland populations, which is mainly due to the declining size of their population in recent years and subsequent inbreeding. This high inbreeding status also resulted in higher genetic differentiation within the Greek and Cyprus cattle group compared to the remaining geographical breed groups. Supervised and unsupervised cluster analyses revealed that the phylogenetic patterns in the indigenous Greek breeds were consistent with their geographical origin and historical information regarding crosses with breeds of Anatolian or Balkan origin. Cyprus cattle showed a relatively high indicine ancestry. Greek island populations are placed close to the root of the tree as defined by Gir and the outgroup Yak, whereas the mainland breeds share a common historical origin with Buša. Unsupervised clustering and D-statistics analyses provided strong support for Bos indicus introgression in almost all the investigated local cattle breeds along the route from Anatolia up to the southern foothills of the Alps, as well as in most cattle breeds along the Apennine peninsula to the southern foothills of the Alps. Conclusions All investigated Cyprus and Greek breeds present complex mosaic genomes as a result of historical and recent admixture events between neighbor and well-separated breeds. While the contribution of some mainland breeds to the genetic diversity pool seems important, some island and fragmented mainland breeds suffer from a severe decline of population size and loss of alleles due to genetic drift. Conservation programs that are a compromise between what is feasible and what is desirable should focus not only on the still highly diverse mainland breeds but also promote and explore the conservation possibilities for island breeds.
Collapse
Affiliation(s)
- Dimitris Papachristou
- Laboratory of Animal Husbandry, Faculty of Animal Sciences, Department of Animal Production, Agricultural University of Athens, 75 Iera Odos, 11855, Athens, Greece
| | - Panagiota Koutsouli
- Laboratory of Animal Husbandry, Faculty of Animal Sciences, Department of Animal Production, Agricultural University of Athens, 75 Iera Odos, 11855, Athens, Greece
| | - George P Laliotis
- Laboratory of Animal Husbandry, Faculty of Animal Sciences, Department of Animal Production, Agricultural University of Athens, 75 Iera Odos, 11855, Athens, Greece
| | - Elisabeth Kunz
- Population Genomics Group, Department of Veterinary Sciences, LMU Munich, Lena-Christ-Str. 48, 82152, Martinsried, Germany
| | - Maulik Upadhyay
- Population Genomics Group, Department of Veterinary Sciences, LMU Munich, Lena-Christ-Str. 48, 82152, Martinsried, Germany
| | - Doris Seichter
- Tierzuchtforschung e.V. München, Senator-Gerauer-Str. 23, 85586, Poing, Germany
| | - Ingolf Russ
- Tierzuchtforschung e.V. München, Senator-Gerauer-Str. 23, 85586, Poing, Germany
| | - Bunevski Gjoko
- Livestock Department, Faculty of Agricultural Sciences and Food Institute of Animal Biotechnology, University Ss. Cyril and Methodius, 16-ta Makedonska Brigada 3, 1000, Skopje, North Macedonia
| | - Nikolaos Kostaras
- AMALTHIA, Network for the Protection of Greek Indigenous Farm Animals, 51 Argyrokastrou, 15669, Athens, Greece
| | - Iosif Bizelis
- Laboratory of Animal Husbandry, Faculty of Animal Sciences, Department of Animal Production, Agricultural University of Athens, 75 Iera Odos, 11855, Athens, Greece
| | - Ivica Medugorac
- Population Genomics Group, Department of Veterinary Sciences, LMU Munich, Lena-Christ-Str. 48, 82152, Martinsried, Germany.
| |
Collapse
|
9
|
Abstract
The aim of the present study was to determine any potential association of the BF, RBP4, and ESR2 genes with reproduction traits in an autochthonous Greek pig population. The PCR-RFLP methodology was implemented for genotyping purposes of the examined genes. No deviation from the Hardy-Weinberg equilibrium was observed for the examined loci, while the B allele noted to be the more frequent in all analyzed genes. In addition, sows with the AA genotype of BF gene found to produce significantly lower numbers of the total born piglets (TNB) and number of piglets born alive (TNA), while the respective BB genotype significantly exceeded in TNB and NBA traits compared to the other two genotypes (P < 0.001). In the case of RBP4 gene, sows with the AB genotype noted to have significant higher values of TNB and NBA in regard to the respective homozygous genotypes (AA or BB), while the BB genotype showed intermediate results (P < 0.001). There were no statistical differences between the BB genotype and the AB genotype of ESR2 locus in regard to the examined traits. However, a noticeable superiority (P < 0.01) of the BB genotype compared to the homozygous AA genotype, adding almost 2 piglets/litter in TNB and NBA trait, was found. ABBREVIATIONS TNB: Total number of born piglets; NBA: Number of piglets born alive.
Collapse
Affiliation(s)
- G P Laliotis
- a Laboratory of Physiology of Reproduction of Farm Animals, Department of Animal Production, School of Agriculture , Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - A Marantidis
- a Laboratory of Physiology of Reproduction of Farm Animals, Department of Animal Production, School of Agriculture , Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - M Avdi
- a Laboratory of Physiology of Reproduction of Farm Animals, Department of Animal Production, School of Agriculture , Aristotle University of Thessaloniki , Thessaloniki , Greece
| |
Collapse
|
10
|
Giantsis IA, Laliotis GP, Stoupa O, Avdi M. Polymorphism of the melatonin receptor 1A (MNTR1A) gene and association with seasonality of reproductive activity in a local Greek sheep breed. ACTA ACUST UNITED AC 2016; 23:9. [PMID: 27134846 PMCID: PMC4850675 DOI: 10.1186/s40709-016-0050-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 04/18/2016] [Indexed: 12/15/2022]
Abstract
Background Sheep’s reproductive physiology in temperate latitudes (such as Greece), is characterized by seasonality and is also regulated by photoperiodic exposure. Melatonin is the key hormone involved in this regulation. However, the melatonin secretion and therefore the ewes reproductive activity underlies variation, proposed to be linked with the melatonin receptor subtype 1A (MNTR1A) gene structure. This study was designed to investigate the polymorphism of the MNTR1A gene in a local Greek sheep breed and to determine its potential association with reproductive seasonality. Results Two groups of farmed ewes, each consisted of 30 individuals, were chosen. Males were introduced in both groups in spring (April). The first group consisted of ewes that showed reproductive activity in spring (May), while the second of ewes that showed reproductive activity 3 months later, in summer. The PCR–RFLP methodology was carried out on a 824-bp DNA fragment of the MTNR1A exon 2 using the RsaI restriction endonuclease. The electrophoretic procedure revealed three genotypes, C/C, C/T and T/T. Specifically, 44 animals showed the C/C genotype (28 from the first group and 16 from the second), 14 the C/T genotype (2 from the first and 12 from the second) and 2 animals had the T/T genotype (both from the second group). Conclusions Statistical analysis indicated a positive correlation between genotype and reproductive seasonality, with C/C genotype playing a crucial role in out-of-season reproduction activity.
Collapse
Affiliation(s)
- Ioannis A Giantsis
- Department of Animal Production, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George P Laliotis
- Department of Animal Production, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Olympia Stoupa
- Department of Animal Production, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Melpomeni Avdi
- Department of Animal Production, Faculty of Agriculture, Aristotle University of Thessaloniki, Thessaloniki, Greece
| |
Collapse
|
11
|
Marantidis A, Laliotis GP, Michailidis G, Avdi M. Study of Toll-Like Receptor and B-Defensins Genes Expression Pattern in Porcine Reproductive Organs. Anim Biotechnol 2015; 26:188-93. [DOI: 10.1080/10495398.2014.902849] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
12
|
Triantaphyllopoulos KA, Laliotis GP, Bizelis IA. Energy balance-dependent regulation of ovine glucose 6-phosphate dehydrogenase protein isoform expression. Adipocyte 2014; 3:30-8. [PMID: 24575366 PMCID: PMC3917929 DOI: 10.4161/adip.26437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/25/2013] [Accepted: 09/09/2013] [Indexed: 11/19/2022] Open
Abstract
G6PDH is the rate-limiting enzyme of the pentose phosphate pathway and one of the principal source of NADPH, a major cellular reductant. Importantly, in ruminant's metabolism the aforementioned NADPH provided, is utilized for de novo fatty acid synthesis. Previous work of cloning the ovine (Ovis aries) og6pdh gene has revealed the presence of two cDNA transcripts (og6pda and og6pdb), og6pdb being a product of alternative splicing not similar to any other previously reported.1 In the current study the effect of energy balance in the ovine G6PDH protein expression was investigated, shedding light on the biochemical features and potential physiological role of the oG6PDB isoform. Changes in energy balance leads to protein expression changes in both transcripts, to the opposite direction and not in a proportional way. Negative energy balance was not in favor of the presence of any particular isoform, while both protein expression levels were not significantly different (P > 0.05). In contrast, at the transition point from negative to positive and on the positive energy balance, there is a significant increase of oG6PDA compared with oG6PDB protein expression (P < 0.001). Both oG6PDH protein isoforms changed significantly toward the positive energy balance. oG6PDA is escalating, while oG6PDB is falling, under the same stimulus (positive energy balance alteration). This change is also positively associated with increasing levels in enzyme activity, 4 weeks post-weaning in ewes’ adipose tissue. Furthermore, regression analysis clearly demonstrated the linear correlation of both proteins in response to the WPW, while energy balance, enzyme activity, and oG6PDA relative protein expression follow the same escalating trend; in contrast, oG6PDB relative protein expression falls in time, similar to both transcripts accumulation pattern, as reported previously.2
Collapse
|
13
|
Laliotis GP, Bizelis I, Vitsa A, Rogdakis E. Increase of Energy Balance Significantly Alters Major Lipogenic Gene Expression in Lactation Ewes. Anim Biotechnol 2012; 23:64-9. [DOI: 10.1080/10495398.2011.639423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- George P. Laliotis
- a Department of Animal Science, Laboratory of Animal Breeding and Husbandry , Agricultural University of Athens , Athens , Greece
| | - Iosif Bizelis
- a Department of Animal Science, Laboratory of Animal Breeding and Husbandry , Agricultural University of Athens , Athens , Greece
| | - Alkistis Vitsa
- a Department of Animal Science, Laboratory of Animal Breeding and Husbandry , Agricultural University of Athens , Athens , Greece
| | - Emmanuel Rogdakis
- a Department of Animal Science, Laboratory of Animal Breeding and Husbandry , Agricultural University of Athens , Athens , Greece
| |
Collapse
|
14
|
Laliotis GP, Bizelis I, Rogdakis E. Comparative Approach of the de novo Fatty Acid Synthesis (Lipogenesis) between Ruminant and Non Ruminant Mammalian Species: From Biochemical Level to the Main Regulatory Lipogenic Genes. Curr Genomics 2011; 11:168-83. [PMID: 21037855 PMCID: PMC2878982 DOI: 10.2174/138920210791110960] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2009] [Revised: 01/03/2010] [Accepted: 01/10/2010] [Indexed: 11/24/2022] Open
Abstract
Over the second half of 20th century much research on lipogenesis has been conducted, especially focused on increasing the production efficiency and improving the quality of animal derived products. However, many diferences are observed in the physiology of lipogenesis between species. Recently, many studies have also elucidated the involvement of numerous genes in this procedure, highlighting diferences not only at physiology but also at the molecular level. The main scope of this review is to point out the major differences between ruminant and non ruminant species, that are observed in key regulatory genes involved in lipogenesis. Human is used as a central reference and according to the findinggs, main differences are analysed. These findings could serve not only as basis for understanding the main physiology of lipogenesis and further basic research, but also as a basis for any animal scientist to develop new concepts and methods for use in improving animal production and modern genetic improvement.
Collapse
Affiliation(s)
- G P Laliotis
- Department of Animal Science, Laboratory of Animal Breeding and Husbandry, Agricultural University of Athens, Iera Odos 75,118 55 Athens, Greece
| | | | | |
Collapse
|
15
|
Laliotis GP, Trivizaki S, Bizelis I, Charismiadou MA, Rogdakis E. Enzymatic and mRNA transcript response of ovine 6-phosphogluconate dehydrogenase (6PGD) in respect to different weights from weaning to four months of age. Anim Biotechnol 2010; 21:149-55. [PMID: 20665286 DOI: 10.1080/10495391003673096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Ovine 6-phosphogluconate dehydrogenase (6PGD), an enzyme of the pentose phosphate pathway, provides the necessary compounds of NADPH for the synthesis of fatty acids. Much of research has been conducted not only on the enzymatic level, but also on molecular level elucidating its cDNA sequence. Herein, we tried to elucidate if any correlation between enzymatic activity and expression of ovine 6PGD gene exists, in respect to two different weights from weaning to 4 months old. 18 male and 16 female lambs of Chios breed were randomly selected after weaning and assigned to two groups based on sex in a different experimental open-plan shed. Two subgroups were defined in each sex and they were slaughtered at 25 kg and 30 kg, respectively. Samples of adipose tissue (tail, perirenal and shoulder site) were collected and 6PGD enzymatic activity, gene expression, and characteristics of adipocytes were determined. According to the determined data, tail subcutaneous adipose tissue matures later than the others examined tissues and has a diminished lipogenic activity. A 6PGD gene expression pattern was not followed by analogous changes of its enzymatic activity, suggesting that other mechanisms such as post transcription or/and post translation regulation may be involved.
Collapse
Affiliation(s)
- George P Laliotis
- Department of Animal Science, Agricultural University of Athens, Greece
| | | | | | | | | |
Collapse
|
16
|
Laliotis GP, Vitsa A, Bizelis I, Charismiadou MA, Rogdakis E. Molecular study of ovine glucose 6-phosphate dehydrogenase gene expression in respect to different energy intake. Comp Biochem Physiol Part D Genomics Proteomics 2010; 5:124-9. [PMID: 20403772 DOI: 10.1016/j.cbd.2010.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 02/24/2010] [Accepted: 02/26/2010] [Indexed: 11/29/2022]
Abstract
Glucose 6-phosphate dehydrogenase (G6PD) plays an important role in a ruminant's metabolism catalyzing the first committed reaction in the pentose phosphate pathway as it provides necessary compounds of NADPH for the synthesis of fatty acids. The cloning of ovine (Ovis aries) G6PD gene revealed the presence of two cDNA transcripts (oG6PD(A) and oG6PD(B)), with oG6PD(B) being a product of alternative splicing and with no similarity to any other previously reported G6PD transcript. Here, we attempt to study the effect of energy balance in ovine G6PD transcript expression, trying simultaneously to find out any potential physiological role of the oG6PD(B) transcript. Changes of energy balance that lead to synergistic changes in the expression of both transcripts, but in opposite directions and not in a proportional way. Negative energy balance favours the presence of the oG6PD(B) transcript leading to a significant increase of its expression, compared to oG6PD(A) expression (P<0.05). In contrast, positive energy balance leads to a significant increase of oG6PD(A) compared to oG6PD(B) expression (P<0.05). In either condition oG6PD(B) expression is unchanged. Regression analysis showed that there is an energy balance threshold where the expression of both transcripts shows no change.
Collapse
Affiliation(s)
- George P Laliotis
- Department of Animal Science, Agricultural University of Athens, Greece
| | | | | | | | | |
Collapse
|
17
|
Laliotis GP, Bizelis I, Argyrokastritis A, Rogdakis E. Cloning, characterization and computational analysis of the 5' regulatory region of ovine glucose 6-phosphate dehydrogenase gene. Comp Biochem Physiol B Biochem Mol Biol 2007; 147:627-34. [PMID: 17493856 DOI: 10.1016/j.cbpb.2007.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2006] [Revised: 04/02/2007] [Accepted: 04/03/2007] [Indexed: 01/14/2023]
Abstract
To better understand the structure and the function of ovine glucose 6-phosphate dehydrogenase (G6PD) promoter region, a genome-walking procedure was followed to isolate and sequence a 1628 bp fragment, containing the 5' regulatory region of the G6PD gene. In silico analysis of the sequence showed many conserved blocks and features with other known mammalian G6PD promoter regions. The analysis also revealed the presence of one TATA box, three GC boxes, two E-boxes and several binding sites for Stimulating Protein 1 (Sp1) and Activator Protein 2 (AP2). Moreover, elements involved in the regulation of lipogenesis like USF (Upstream stimulating factor), HSF (Heat Shock Factor), F2F (Prolactin receptor), RAR (Retinoid Acid Receptor), STRE (STress Response Element), RORa (Retinoid related Orphan Receptor alpha), GATA (GATA binding factor), RFX (Regulatory Factor X), SREBP (Sterol Regulatory Element Binding Protein), MEP (Metal Element Protein), CREB (insulin receptor), PRE (Progesterone receptor), and HNF4 (Hepatic Nuclear Factor 4) were detected. The most important regulatory motifs were found to be conserved as compared to those in human and mouse counterparts. However, some differences were noted, likely indicating differences in the transcription regulation of G6PD gene between ruminant and non-ruminant species.
Collapse
Affiliation(s)
- George P Laliotis
- Department of Animal Science, Laboratory of Animal Breeding and Husbandry, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece
| | | | | | | |
Collapse
|
18
|
Laliotis GP, Argyrokastritis A, Bizelis I, Rogdakis E. Cloning and characterization of an alternative transcript of ovine glucose 6-phosphate dehydrogenase gene: Comparative approach between ruminant and non-ruminant species. Gene 2007; 388:93-101. [PMID: 17157446 DOI: 10.1016/j.gene.2006.10.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Revised: 09/25/2006] [Accepted: 10/07/2006] [Indexed: 10/23/2022]
Abstract
Glucose 6-phosphate dehydrogenase (G6PD) plays an important role in ruminant's lipogenesis, as it provides necessary compounds of NADPH for the synthesis of fatty acids catalyzing the first committed reaction in the pentose phosphate pathway. In this work the full length ovine glucose 6-phosphate dehydrogenase cDNA was isolated using a polymerase chain reaction based strategy. Two isoforms (OG6PDA and OG6PDB) were detected encoding a protein of 515 and 524 amino acids, respectively. Both deduced amino acid sequences reveal a well conserved protein containing all the important residues for its catalytic role. The extra nine amino acids encoded by OG6PDB cause a frameshift in the polypeptide chain resulting in changes around the area of the potential substrate binding site. A three-dimensional model of ovine G6PD protein shows that this frameshift cause structural changes in the catalytic binding "pocket" of the molecule. Southern blot and RT analysis revealed that ovine G6PD appears as a single copy gene while it is expressed, with slight variability, in all tissues analyzed. Moreover, expression analysis of the ovine G6PD isoforms showed that OG6PDB is expressed only in tissues where lipogenesis is high in ruminants. Thus, we hypothesize that in ruminants G6PD may be regulated by the ratio of the two transcripts, according to the existence stimulus.
Collapse
Affiliation(s)
- George P Laliotis
- Department of Animal Science, Laboratory of Animal Breeding and Husbandry, Agricultural University of Athens, Iera Odos 75, 118 55 Athens, Greece
| | | | | | | |
Collapse
|