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Raveane A, Aneli S, Montinaro F, Athanasiadis G, Barlera S, Birolo G, Boncoraglio G, Di Blasio AM, Di Gaetano C, Pagani L, Parolo S, Paschou P, Piazza A, Stamatoyannopoulos G, Angius A, Brucato N, Cucca F, Hellenthal G, Mulas A, Peyret-Guzzon M, Zoledziewska M, Baali A, Bycroft C, Cherkaoui M, Chiaroni J, Di Cristofaro J, Dina C, Dugoujon JM, Galan P, Giemza J, Kivisild T, Mazieres S, Melhaoui M, Metspalu M, Myers S, Pereira L, Ricaut FX, Brisighelli F, Cardinali I, Grugni V, Lancioni H, Pascali VL, Torroni A, Semino O, Matullo G, Achilli A, Olivieri A, Capelli C. Population structure of modern-day Italians reveals patterns of ancient and archaic ancestries in Southern Europe. Sci Adv 2019; 5:eaaw3492. [PMID: 31517044 PMCID: PMC6726452 DOI: 10.1126/sciadv.aaw3492] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/10/2019] [Accepted: 08/06/2019] [Indexed: 05/10/2023]
Abstract
European populations display low genetic differentiation as the result of long-term blending of their ancient founding ancestries. However, it is unclear how the combination of ancient ancestries related to early foragers, Neolithic farmers, and Bronze Age nomadic pastoralists can explain the distribution of genetic variation across Europe. Populations in natural crossroads like the Italian peninsula are expected to recapitulate the continental diversity, but have been systematically understudied. Here, we characterize the ancestry profiles of Italian populations using a genome-wide dataset representative of modern and ancient samples from across Italy, Europe, and the rest of the world. Italian genomes capture several ancient signatures, including a non-steppe contribution derived ultimately from the Caucasus. Differences in ancestry composition, as the result of migration and admixture, have generated in Italy the largest degree of population structure detected so far in the continent, as well as shaping the amount of Neanderthal DNA in modern-day populations.
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Affiliation(s)
- A. Raveane
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
- Department of Zoology, University of Oxford, Oxford, UK
- Corresponding author. (A.R.); (S.A.); (F.M.); (C.C.)
| | - S. Aneli
- Department of Zoology, University of Oxford, Oxford, UK
- Department of Medical Sciences, University of Turin, Turin, Italy
- IIGM (Italian Institute for Genomic Medicine), Turin, Italy
- Corresponding author. (A.R.); (S.A.); (F.M.); (C.C.)
| | - F. Montinaro
- Department of Zoology, University of Oxford, Oxford, UK
- Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, Estonia
- Corresponding author. (A.R.); (S.A.); (F.M.); (C.C.)
| | - G. Athanasiadis
- Bioinformatics Research Centre, Aarhus University, Aarhus, Denmark
| | - S. Barlera
- Department of Cardiovascular Research, Istituto di Ricovero e Cura a Carattere Scientifico–Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy
| | - G. Birolo
- Department of Medical Sciences, University of Turin, Turin, Italy
- IIGM (Italian Institute for Genomic Medicine), Turin, Italy
| | - G. Boncoraglio
- Department of Cerebrovascular Diseases, IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
- PhD Program in Neuroscience, University Milano-Bicocca, Monza, Italy
| | - A. M. Di Blasio
- Istituto Auxologico Italiano, IRCCS, Centro di Ricerche e Tecnologie Biomediche, Milano, Italy
| | - C. Di Gaetano
- Department of Medical Sciences, University of Turin, Turin, Italy
- IIGM (Italian Institute for Genomic Medicine), Turin, Italy
| | - L. Pagani
- Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, Estonia
- APE lab, Department of Biology, University of Padua, Padua, Italy
| | - S. Parolo
- Computational Biology Unit, Institute of Molecular Genetics, National Research Council, Pavia, Italy
| | - P. Paschou
- Department of Biological Sciences, Purdue University, West Lafayette, IN, USA
| | - A. Piazza
- Department of Medical Sciences, University of Turin, Turin, Italy
- Academy of Sciences, Turin, Italy
| | - G. Stamatoyannopoulos
- Department of Medicine and Genome Sciences, University of Washington, Seattle, WA, USA
| | - A. Angius
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato, Cagliari, Italy
| | - N. Brucato
- Evolutionary Medicine Group, Laboratoire d’Anthropologie Moléculaire et Imagerie de Synthèse, Centre National de la Recherche Scientifique (CNRS), Université de Toulouse, Toulouse, France
| | - F. Cucca
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato, Cagliari, Italy
| | - G. Hellenthal
- University College London Genetics Institute (UGI), University College London, London, UK
| | - A. Mulas
- Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Lanusei, Italy
| | - M. Peyret-Guzzon
- The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - M. Zoledziewska
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato, Cagliari, Italy
| | - A. Baali
- Faculté des Sciences Semlalia de Marrakech (FSSM), Université Cadi Ayyad, Marrakech, Morocco
| | - C. Bycroft
- The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - M. Cherkaoui
- Faculté des Sciences Semlalia de Marrakech (FSSM), Université Cadi Ayyad, Marrakech, Morocco
| | - J. Chiaroni
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
- Etablissement Français du Sang PACA Corse, Biologie des Groupes Sanguins, Marseille, France
| | - J. Di Cristofaro
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
- Etablissement Français du Sang PACA Corse, Biologie des Groupes Sanguins, Marseille, France
| | - C. Dina
- l’institut du thorax, INSERM, CNRS, University of Nantes, Nantes, France
| | - J. M. Dugoujon
- Evolutionary Medicine Group, Laboratoire d’Anthropologie Moléculaire et Imagerie de Synthèse, Centre National de la Recherche Scientifique (CNRS), Université de Toulouse, Toulouse, France
| | - P. Galan
- Equipe de Recherche en Epidémiologie Nutritionnelle (EREN), Centre de Recherche en Epidémiologie et Statistiques, Université Paris 13/Inserm U1153/Inra U1125/ Cnam, COMUE Sorbonne Paris Cité, F-93017 Bobigny, France
| | - J. Giemza
- l’institut du thorax, INSERM, CNRS, University of Nantes, Nantes, France
| | - T. Kivisild
- Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, Estonia
- Department of Human Genetics, KU Leuven, Herestraat 49, box 604, Leuven 3000, Belgium
| | - S. Mazieres
- Aix Marseille Univ, CNRS, EFS, ADES, Marseille, France
| | - M. Melhaoui
- Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - M. Metspalu
- Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, Estonia
| | - S. Myers
- The Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - L. Pereira
- i3S–Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP–Instituto de Patologia e Imunologia Molecular, Universidade do Porto, Porto, Portugal
| | - F. X. Ricaut
- Evolutionary Medicine Group, Laboratoire d’Anthropologie Moléculaire et Imagerie de Synthèse, Centre National de la Recherche Scientifique (CNRS), Université de Toulouse, Toulouse, France
| | - F. Brisighelli
- Section of Legal Medicine, Institute of Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | - I. Cardinali
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - V. Grugni
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
| | - H. Lancioni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - V. L. Pascali
- Section of Legal Medicine, Institute of Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | - A. Torroni
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
| | - O. Semino
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
| | - G. Matullo
- Department of Medical Sciences, University of Turin, Turin, Italy
- IIGM (Italian Institute for Genomic Medicine), Turin, Italy
| | - A. Achilli
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
| | - A. Olivieri
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, Pavia, Italy
| | - C. Capelli
- Department of Zoology, University of Oxford, Oxford, UK
- Corresponding author. (A.R.); (S.A.); (F.M.); (C.C.)
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Bellodi A, Porcu C, Cannas R, Cau A, Marongiu MF, Mulas A, Vittori S, Follesa MC. Life-history traits of the long-nosed skate Dipturus oxyrinchus. J Fish Biol 2017; 90:867-888. [PMID: 27873321 DOI: 10.1111/jfb.13205] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/10/2016] [Indexed: 06/06/2023]
Abstract
This work investigates life-history traits of the long-nosed skate Dipturus oxyrinchus, which is a common by-catch in Sardinian waters. The reproductive variables were analysed from 979 specimens sampled during scientific and commercial hauls. Females (10·4-117·5 cm total length, LT ) attained larger sizes than males (14·5-99·5 cm LT ). To evaluate age and growth, a sub-sample of 130 individuals (76 females and 54 males) were used. The age was estimated by annuli counts of sectioned vertebral centra. Four models were used for the length-at-age data: the von Bertalanffy, the exponential, the Gompertz and the logistic functions. According to the Akaike's information criterion, the Gompertz model seemed to provide the best fitting curve (L∞ mean ± s.e.: 127·55 ± 4·90 cm, k: 0·14 ± 0·09, IP: 3·97 ± 0·90 years). The oldest female and male were aged 17 (115·5 cm LT ) and 15 years (96·0 cm LT ), respectively. Lengths at maturity were 103·5 cm for females and 91·0 cm for males, corresponding to 90% of the maximum observed length in both sexes. The monthly distribution of maturity stages highlighted an extended reproductive cycle, with spawning females and active males being present almost throughout the year, as confirmed by the gonado-somatic index. Ovarian fecundity reached a maximum of 26 yolked follicles with a mean ± s.e. size of 19·7 ± 6·5 mm.
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Affiliation(s)
- A Bellodi
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - C Porcu
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - R Cannas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - Al Cau
- Department of Architecture, Design and Urban Development, University of Sassari, Palazzo Pou Salit, P.zza Duomo 6, 07041, Alghero, Italy
| | - M F Marongiu
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - A Mulas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - S Vittori
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
| | - M C Follesa
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy
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Demirkan A, Lahti J, Direk N, Viktorin A, Lunetta KL, Terracciano A, Nalls MA, Tanaka T, Hek K, Fornage M, Wellmann J, Cornelis MC, Ollila HM, Yu L, Smith JA, Pilling LC, Isaacs A, Palotie A, Zhuang WV, Zonderman A, Faul JD, Sutin A, Meirelles O, Mulas A, Hofman A, Uitterlinden A, Rivadeneira F, Perola M, Zhao W, Salomaa V, Yaffe K, Luik AI, Liu Y, Ding J, Lichtenstein P, Landén M, Widen E, Weir DR, Llewellyn DJ, Murray A, Kardia SLR, Eriksson JG, Koenen K, Magnusson PKE, Ferrucci L, Mosley TH, Cucca F, Oostra BA, Bennett DA, Paunio T, Berger K, Harris TB, Pedersen NL, Murabito JM, Tiemeier H, van Duijn CM, Räikkönen K. Somatic, positive and negative domains of the Center for Epidemiological Studies Depression (CES-D) scale: a meta-analysis of genome-wide association studies. Psychol Med 2016; 46:1613-1623. [PMID: 26997408 PMCID: PMC5812462 DOI: 10.1017/s0033291715002081] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Major depressive disorder (MDD) is moderately heritable, however genome-wide association studies (GWAS) for MDD, as well as for related continuous outcomes, have not shown consistent results. Attempts to elucidate the genetic basis of MDD may be hindered by heterogeneity in diagnosis. The Center for Epidemiological Studies Depression (CES-D) scale provides a widely used tool for measuring depressive symptoms clustered in four different domains which can be combined together into a total score but also can be analysed as separate symptom domains. METHOD We performed a meta-analysis of GWAS of the CES-D symptom clusters. We recruited 12 cohorts with the 20- or 10-item CES-D scale (32 528 persons). RESULTS One single nucleotide polymorphism (SNP), rs713224, located near the brain-expressed melatonin receptor (MTNR1A) gene, was associated with the somatic complaints domain of depression symptoms, with borderline genome-wide significance (p discovery = 3.82 × 10-8). The SNP was analysed in an additional five cohorts comprising the replication sample (6813 persons). However, the association was not consistent among the replication sample (p discovery+replication = 1.10 × 10-6) with evidence of heterogeneity. CONCLUSIONS Despite the effort to harmonize the phenotypes across cohorts and participants, our study is still underpowered to detect consistent association for depression, even by means of symptom classification. On the contrary, the SNP-based heritability and co-heritability estimation results suggest that a very minor part of the variation could be captured by GWAS, explaining the reason of sparse findings.
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Affiliation(s)
- A. Demirkan
- Genetic Epidemiology Unit, Departments of Epidemiology and Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | - J. Lahti
- Institute of Behavioural Sciences, University of Helsinki, Helsinki, Finland
| | - N. Direk
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - A. Viktorin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - K. L. Lunetta
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - A. Terracciano
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
- College of Medicine, Florida State University, Tallahassee, FL, USA
| | - M. A. Nalls
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - T. Tanaka
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - K. Hek
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Department of Psychiatry, Epidemiological and Social Psychiatric Research Institute, Erasmus MC, Rotterdam, The Netherlands
| | - M. Fornage
- Houston Institute of Molecular Medicine, University of Texas, Houston, TX, USA
| | - J. Wellmann
- Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany
| | - M. C. Cornelis
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - H. M. Ollila
- Public Health Genomics Unit and Institute for Molecular Medicine Finland (FIMM), National Institute for Health and Welfare, Helsinki, Finland
| | - L. Yu
- Department of Neurological Sciences, Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - J. A. Smith
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | | | - A. Isaacs
- Genetic Epidemiology Unit, Departments of Epidemiology and Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | - A. Palotie
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge, UK
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - W. V. Zhuang
- Department of Preventive Medicine and Public Health, School of Medicine, Creighton University, Omaha, NE, USA
| | - A. Zonderman
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - J. D. Faul
- Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - A. Sutin
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - O. Meirelles
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - A. Mulas
- Istituto di Ricerca Genetica e Biomedica, CNR, Monserrato, Cagliari, Italy
| | - A. Hofman
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - A. Uitterlinden
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Member of Netherlands Consortium for Healthy Aging sponsored by Netherlands Genomics Initiative, Leiden, The Netherlands
- Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - F. Rivadeneira
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Member of Netherlands Consortium for Healthy Aging sponsored by Netherlands Genomics Initiative, Leiden, The Netherlands
- Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - M. Perola
- Public Health Genomics Unit and Institute for Molecular Medicine Finland (FIMM), National Institute for Health and Welfare, Helsinki, Finland
| | - W. Zhao
- Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - V. Salomaa
- Department of Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
| | - K. Yaffe
- Departments of Psychiatry, University of California, San Francisco, CA, USA
| | - A. I. Luik
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - NABEC
- North American Brain Expression Consortium, USA
| | - UKBEC
- UK Brain Expression Consortium, UK
| | - Y. Liu
- Center for Human Genomics, Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - J. Ding
- Geriatrics & Gerontology, Sticht Center on Aging, Wake Forest University, Primate Center, Epidemiology & Prevention, Winston-Salem, NC, USA
| | - P. Lichtenstein
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - M. Landén
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - E. Widen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - D. R. Weir
- Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | | | - A. Murray
- University of Exeter Medical School, Exeter, UK
| | - S. L. R. Kardia
- Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI, USA
| | - J. G. Eriksson
- National Institute for Health and Welfare, Helsinki, Finland
- Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland
| | - K. Koenen
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - P. K. E. Magnusson
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - L. Ferrucci
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - T. H. Mosley
- Department of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - F. Cucca
- Istituto di Ricerca Genetica e Biomedica, CNR, Monserrato, Cagliari, Italy
| | - B. A. Oostra
- Genetic Epidemiology Unit, Departments of Epidemiology and Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
- Department of Clinical Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - D. A. Bennett
- Department of Neurological Sciences, Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - T. Paunio
- Public Health Genomics Unit and Institute for Molecular Medicine Finland (FIMM), National Institute for Health and Welfare, Helsinki, Finland
| | - K. Berger
- Institute of Epidemiology and Social Medicine, University of Münster, Münster, Germany
| | - T. B. Harris
- Laboratory of Epidemiology, Demography, and Biometry, National Institute on Ageing, National Institutes of Health, Bethesda, MD, USA
| | - N. L. Pedersen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden
| | - J. M. Murabito
- Department of Medicine, Section of General Internal Medicine, Boston University School of Medicine, Boston, MA, USA
| | - H. Tiemeier
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - C. M. van Duijn
- Genetic Epidemiology Unit, Departments of Epidemiology and Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
- Member of Netherlands Consortium for Healthy Aging sponsored by Netherlands Genomics Initiative, Leiden, The Netherlands
| | - K. Räikkönen
- Institute of Behavioural Sciences, University of Helsinki, Helsinki, Finland
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Mulas A, Bellodi A, Cannas R, Cau A, Cuccu D, Marongiu MF, Porcu C, Follesa MC. Diet and feeding behaviour of longnosed skate Dipturus oxyrinchus. J Fish Biol 2015; 86:121-138. [PMID: 25557426 DOI: 10.1111/jfb.12551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 09/17/2014] [Indexed: 06/04/2023]
Abstract
A total of 255 longnosed skate Dipturus oxyrinchus caught in Sardinian waters (central-western Mediterranean Sea), was analysed with respect to fish total length (LT ), season and depth, in order to provide information on diet and feeding behaviour. Specimens ranging from 93 to 1153 mm LT , were collected at depths between 121 and 671 m, during experimental trawl surveys carried out from 2005 to 2010. The diet comprised crustaceans [prey specific index of relative importance (%IPSRI ) = 72·69], teleosts (%IPSRI = 10·28) and molluscs (%IPSRI = 10·94). Levins' index (Bi ) showed a narrow niche breadth (Bi = 0·35). The mean ± s.e. trophic level (TL ) was 3·63 ± 0·50. The analysis showed major ontogenetic changes in the feeding behaviour. Early life stages were characterized by a benthic diet, which changed to benthopelagic during growth. Mysids, particularly Lophogaster typicus (%IPSRI = 34·51), were the main prey items of immature individuals, replaced by euphausiids, mainly Meganyctiphanes norvegica (%IPSRI = 13·19), in maturing fish. Crustaceans became less important in mature specimens, being replaced by molluscs (%IPSRI = 28·99) and teleosts (%IPSRI = 24·56). A concomitant increase of the TL was recorded (mean ± s.e. = 3·41 ± 0·44, 3·75 ± 0·54 and 4·28 ± 0·61 for immature, maturing and mature individuals). These feeding patterns ensured low levels of intraspecific competition. This study provides new information about the role that the D. oxyrinchus plays in the marine food chain and data now essential to formulate new and effective management plans for this species.
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Affiliation(s)
- A Mulas
- Department of Life and Environmental Sciences, University of Cagliari, Via T. Fiorelli 1, Cagliari 09126, Italy
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Abstract
The spotfin burrfish Chilomycterus reticulatus (405 mm standard length) is recorded for the first time on the shoreline of the Mediterranean Sea. The adult specimen was found dried on a beach near the south Sardinian Sea (S. Antioco's Island). Photographs and morphometrics of the specimen are given.
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Affiliation(s)
- M C Follesa
- Department of Animal Biology and Ecology, University of Cagliari, Viale Poetto n.1 09126 Cagliari, Italy.
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Mulas A. [Not Available]. Stor Med Pop 2001; 7:47-56. [PMID: 11637914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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Spina L, Longoni R, Mulas A, Chang KJ, Di Chiara G. Dopamine-dependent behavioural stimulation by non-peptide delta opioids BW373U86 and SNC 80: 1. Locomotion, rearing and stereotypies in intact rats. Behav Pharmacol 1998; 9:1-8. [PMID: 9832942] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The unconditioned behavioural effects of two non-peptide delta-opioid receptor agonists, BW 373U86 and SNC 80, were studied in the intact rat. BW 373U86 (0.1-2.5 mg/kg s.c.) and SNC 80 (2.5-10 mg/kg s.c.) dose-dependently elicited locomotion, rearing, stereotyped sniffing, licking and gnawing. These effects were abolished by pretreatment with the delta-opioid receptor antagonist naltrindole (5.0 mg/kg s.c.). In view of the phenomenological similarities between this syndrome and that elicited by dopamine-receptor agonists, the role played by dopamine receptors was investigated. The specific dopamine D1 receptor antagonist SCH 23390 and the specific dopamine D2/D3 receptor antagonist raclopride reduced or even abolished the behavioural stimulation induced by lower doses of BW 373U86 and SNC 80. When higher doses of BW 373U86 were used (2.5 mg/kg), however, raclopride, even at high cataleptic doses (6.0 mg/kg), only partly prevented the behavioural stimulation induced by the delta-opioid receptor agonist. The behavioural stimulation remaining after high doses of raclopride was abolished by the administration of SCH 23390. These results show that delta-opioid receptor stimulation elicits dopamine-dependent behavioural activation in the rat that depends on dopamine receptors, particularly of the D1 subtype.
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Affiliation(s)
- L Spina
- Department of Toxicology, University of Cagliari, Italy
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Longoni R, Cadoni C, Mulas A, Di Chiara G, Spina L. Dopamine-dependent behavioural stimulation by non-peptide delta opioids BW373U86 and SNC 80: 2. Place-preference and brain microdialysis studies in rats. Behav Pharmacol 1998; 9:9-14. [PMID: 9832943] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The motivational properties of the non-peptide delta-opioid receptor agonists BW373U86 and SNC 80 were investigated using the place-conditioning paradigm. BW373U86 (0.5-1.0 mg/kg s.c.) and SNC 80 (1.25-5.0 mg/kg s.c.) elicited significant preference for the drug-paired compartment, in a dose-related fashion. Naltrindole (5.0 mg/kg s.c.) pretreatment, while failing to modify preference when given alone, completely prevented place-preference induced by BW373U86 (1.0 mg/kg s.c.) and SNC 80 (1.25 mg/kg s.c.). The dopamine D1 receptor antagonist SCH23390, given at doses that do not affect place-preference (0.012 mg/kg s.c.), completely prevented the place-preference induced by BW373U86 and SNC 80. At the doses effective in eliciting place-preference, BW373U86 and SNC 80 failed to modify extracellular dopamine in the medial nucleus accumbens, while in the dorso-lateral caudate-putamen BW373U86 (1.0 and 2.5 mg/kg s.c.) reduced extracellular dopamine, and this effect was prevented by naltrindole (5.0 mg/kg s.c.). SNC 80, only at the dose of 5 mg/kg s.c., significantly reduced extracellular DA in the dorso-lateral caudate-putamen. The results indicate that stimulation of delta-opioid receptors has incentive properties that might be related to an indirect amplification of post-synaptic dopamine transmission.
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Affiliation(s)
- R Longoni
- Department of Toxicology, University of Cagliari, Italy
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Lugliè PF, Millia E, Cellai A, Mulas A, Pinna GG. [Intermediate medications in endodontics: a quantitative in-vitro evaluation of 2 phenolic derivatives]. Minerva Stomatol 1995; 44:135-138. [PMID: 7659049] [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] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In a series of in vitro experiments with dental elements obtained after an extraction, the persistence in the pulpal chamber of two phenolic compounds largely used as dental medicaments has been evaluated. The substances, p-chlorophenol and eugenol were put in a small piece of cotton inside the dental elements where they were left for 7 days. Spectrophotometric UV determination of p-chlorophenol and eugenol were made after 3 and 7 days. Our results indicate that 25% of the initial amount of p-chlorophenol is found after three days and nearly 1/5 after 7 days. The figures for eugenol are: 1/3 after three days and 1/6 of the initial amount after 7 days. The authors therefore suggest the substances under study be used as dental medicaments with an optimum of three days of interval between two medications, even if a longer interval may be observed due to the good in situ persistence of the two phenols.
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Affiliation(s)
- P F Lugliè
- Istituto di Clinica Odontostomatologica, Università degli Studi, Sassari
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Lugliè PF, Milia E, Cellai A, Mulas A. [Phenolic derivatives in intermediate medications in endodontics. 1. A review of the literature]. Minerva Stomatol 1995; 44:155-8. [PMID: 7659052] [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] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The authors review the literature on phenolic derivatives, a widely used compound antiseptic for intermediate endodontic medication. There is interest in these substances owing to the frequency of their clinical application in order to maintain the antiseptic conditions obtained during the course of the chemico-mechanical preparation of the radicular canal.
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Affiliation(s)
- P F Lugliè
- Istituto di Clinica Odontostomatologica, Università degli Studi, Sassari
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Longoni R, Spina L, Mulas A, Carboni E, Garau L, Melchiorri P, Di Chiara G. (D-Ala2)deltorphin II: D1-dependent stereotypies and stimulation of dopamine release in the nucleus accumbens. J Neurosci 1991; 11:1565-76. [PMID: 1646295 PMCID: PMC6575425] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In order to investigate the relative role of central delta- and mu-opioid receptors in behavior, the effects of (D-Ala2)deltorphin II, a natural delta-opioid peptide, and PL017, a beta-casomorphin derivative specific for mu receptors, were compared after local intracerebral and intraventricular administration. Intracerebral infusion of the two peptides was done bilaterally in the limbic nucleus accumbens and in the ventral and dorsal caudate putamen of freely moving rats through chronic intracerebral cannulas. After intra-accumbens infusion, the two peptides elicited marked but opposite behavioral effects: while (D-Ala2)deltorphin II evoked dose-dependent motor stimulation characterized by locomotion, sniffing, and oral stereotypies, PL017 elicited motor inhibition with rigidity and catalepsy. These effects were site specific because they could not be evoked from the ventral or from the dorsal caudate. Low doses of naloxone (0.1 mg/kg, s.c.) blocked the effects of PL017 but not those of (D-Ala2)deltorphin II, which instead were reduced by high doses of naloxone (1.0 mg/kg) and by the putative delta-antagonist naltrindole; this drug failed to affect the catalepsy induced by PL017. Therefore, while (D-Ala2)deltorphin II effects were delta-mediated, PL017 effects were mu-mediated. Blockade of dopamine D1 receptors by SCH 23390 abolished (D-Ala2)deltorphin II effects, while blockade of dopamine D2 receptors by raclopride or by haloperidol was without effect. Local application by reverse dialysis of (D-Ala2)deltorphin II (5 microM) to the accumbens resulted in a naloxone-sensitive increase of extracellular dopamine concentrations; these effects could not be evoked from the caudate, nor by PL017 in the accumbens. Intracerebroventricular administration of (D-Ala2)deltorphin II or of PL017 elicited behavioral effects qualitatively similar to those obtained from the accumbens.
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Affiliation(s)
- R Longoni
- Institute of Experimental Pharmacology and Toxicology, University of Cagliari, Italy
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Spina L, Longoni R, Mulas A, Di Chiara G. SKF 38393 potentiates yawning induced by LY 171555: further evidence against the autoreceptor hypothesis of yawning. Psychopharmacology (Berl) 1989; 98:567-8. [PMID: 2570436 DOI: 10.1007/bf00441963] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The effect of concurrent D-1 receptor stimulation by SKF 38393 on the expression of yawning elicited by D-2 receptor stimulation with LY 171555 was studied in the rat. A low dose of SKF 38393 (2.5 mg/kg SC), while failed to elicit yawning, potentiated the effectiveness of LY 171555 in eliciting yawning at all the doses tested (12.5, 25 and 50 micrograms/kg SC) and this effect was abolished by SCH 23390 (0.012 mg/kg SC). The results indicate that in analogy with typical post-synaptic dopaminergic effects (hypermotility-stereotypy), yawning elicited by a D-2 agonist is facilitated by concurrent stimulation of D-1 receptors and therefore is consistent with previous evidence that yawning in response to a D-2 agonist is not mediated by autoreceptors.
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Affiliation(s)
- L Spina
- Institute of Experimental Pharmacology and Toxicology, University of Cagliari, Italy
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Imperato A, Mulas A, Di Chiara G. The D-1 antagonist SCH 23390 stimulates while the D-1 agonist SKF 38393 fails to affect dopamine release in the dorsal caudate of freely moving rats. Eur J Pharmacol 1987; 142:177-81. [PMID: 2891544 DOI: 10.1016/0014-2999(87)90672-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
SCH 23390, from doses of 0.012 mg/kg s.c., dose dependently stimulated the release of dopamine (DA) and the output of its metabolites, dihydroxyphenylacetic acid and homovanillic acid, in the dorsal caudate of freely moving rats implanted with transcerebral dialysis fibers. SKF 38393 failed to modify DA release and metabolism at doses of 5, 10 and 25 mg/kg s.c. but at 25 mg/kg s.c. it abolished the effect of 0.025 mg/kg of SCH 23390. Administration of gamma-butyrolactone (700 mg/kg s.c.), which blocks the firing of DA neurons, prevented the effect of 0.050 mg/kg s.c. SCH 23390. The results indicate that D-1 receptors control the release of DA, probably through stimulation of the firing of DA neurons.
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Affiliation(s)
- A Imperato
- Institute of Experimental Pharmacology and Toxicology, University of Cagliari, Italy
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Moroni F, Mulas A, Moneti G, Pepeu G. In vitro changes in gamma-aminobutyric acid output from the cerebral cortex induced by inhibitors of gamma-aminobutyric acid uptake and metabolism. J Neurochem 1982; 39:582-4. [PMID: 7086436 DOI: 10.1111/j.1471-4159.1982.tb03986.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The effects of inhibitors of gamma-aminobutyric acid (GABA) metabolism or uptake on GABA output from the cerebral cortex was studied by means of a collecting cup placed on the exposed cortex of rats anaesthetized with urethane. GABA was identified and quantified by a mass-fragmentographic method. Ethanolamine-O-sulphate (10(-2) M) applied directly on the cerebral cortex caused a long-lasting twofold increase in GABA output, whereas DL-2,4-diaminobutyric acid (5 X 10(-3) M) caused a sevenfold increase and beta-alanine was active. The results indicate that glial uptake has little effect on GABA inactivation in the cerebral cortex. The inhibition of neuronal uptake seems a more effective tool to increase GABA concentration in the synaptic cleft, and consequently also in GABA output, than the inhibition of GABA metabolism.
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Gioia M, Plotti G, Scardina R, Petrozzi U, Mulas A, Beccia F. [Our experience with peridural anesthesia in labor]. Minerva Anestesiol 1981; 47:851-8. [PMID: 7335188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A clinical study has been carried out on 86 child-bearing mothers, continuous lumbar peridural block being employed, in the light of personal experience, to induce analgesia during labour. The results were positive on the whole as regards duration and the algogenous intensity measured during the dilatation phase and during expulsion.
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Mulas A, Longoni R, Spina L, Del Fiacco M, Di Chiara G. Ipsiversive turning behaviour after discrete unilateral lesions of the dorsal mesencephalic reticular formation by kainic acid. Brain Res 1981; 208:468-72. [PMID: 7194130 DOI: 10.1016/0006-8993(81)90579-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Discrete axon-sparing lesions were placed unilaterally in the mesencephalon by the local injection of kainic acid. Unilateral lesions of the dorsal reticular formation just beneath the superior colliculus and lateral to the periacqueductal grey resulted in consistent ipsiversive apomorphine-induced circling. Only weak motor asymmetries were observed after unilateral lesions restricted to the superior colliculus or to the periacqueductal grey. The results indicate that the dorsal mesencephalic reticular formation plays an essential role as an output station for striatal postural functions.
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Abstract
Acetylcholine (ACh) levels were determined in the brain of rats killed by decapitation or focussed microwave radiation during drug-induced convulsions. During metrazol or strychnine-induced convulsions a diffuse decrease in ACh levels was found in rats killed by decapitation. When the rats were killed by radiation and the brain was only divided into three large regions, strychnine caused no changes in ACh levels; metrazol caused a decrease in the cerebral cortex and lower brainstem. When discrete brain regions were investigated in rats killed by radiation, metrazol-induced convulsions were associated with a decrease in ACh level in all regions dissected and strychnine-induced convulsions with a decrease in the hippocampus and caudate nucleus only. Picrotoxin-induced convulsions were associated with a decrease in ACh level in the cerebral cortex, hippocampus, midbrain and medulla-pons, those induced by bicuculline with an increase in ACh level in the frontal cortex, hippocampus, midbrain and medulla-pons, by dimefline with an increase in the frontal cortex, midbrain and medulla-pons and a decrease in the caudate nucleus. The experiments show that each type of convulsant affects ACh levels in discrete brain regions in a different way.
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Longoni R, Mulas A, Novak BO, Pepeu IM, Pepeu G. Effect of single and repeated electroshock applications on brain acetylcholine levels and choline acetyltransferase activity in the rat. Neuropharmacology 1976; 15:283-6. [PMID: 934440 DOI: 10.1016/0028-3908(76)90129-5] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Longoni R, Mulas A, Pepeu G. Proceedings: Drug effect on acetylcholine level in discrete brain regions of rats killed by microwave irradiation. Br J Pharmacol 1974; 52:429P-430P. [PMID: 4458852 PMCID: PMC1777047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Mulas A, Crabai F, Pepeu G. The influence of repeated experience on the effects of scopolamine and of amphetamine on exploratory behaviour in the rat. ACTA ACUST UNITED AC 1970. [DOI: 10.1016/s0031-6989(70)80001-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mulas A, Pepeu G. Disappearance in rats with septal lesions of the stimulatory effect of hyoscine on exploratory behaviour. Br J Pharmacol 1970; 39:209P-210P. [PMID: 4911759 PMCID: PMC1703031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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