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  1 / 9672 MEDLINE  
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[PMID]:29241234
[Au] Autor:Massey H; Leach J; Davis M; Vertongen V
[Ad] Endereço:Department of Sport and Exercise Science, University of Portsmouth, Spinnaker Building, Cambridge Road, Portsmouth PO1 2ER, UK, heather.massey@port.ac.uk.
[Ti] Título:Lost at sea: the medicine, physiology and psychology of prolonged immersion.
[So] Source:Diving Hyperb Med;47(4):239-247, 2017 Dec.
[Is] ISSN:1833-3516
[Cp] País de publicação:Australia
[La] Idioma:eng
[Ab] Resumo:In most countries, immersion represents the second most common cause of accidental death in children and the third in adults. Between 2010 and 2013, 561 deaths worldwide involving recreational divers were recorded by the Divers Alert Network. Consequently, there is no room for complacency when diving. Being lost at sea is a diver's worst nightmare. In 2006, a diver was lost at sea off the coast of New Zealand for 75 hours. It is unprecedented that, after such a long time immersed in temperate (16-17°C) waters, he was found and survived. His case is presented and utilised to illustrate the many physiological and psychological factors involved in prolonged immersion and what might determine survival under such circumstances. We also briefly review options for enhancing diver location at sea and a few issues related to search and rescue operations are discussed.
[Mh] Termos MeSH primário: Mergulho/fisiologia
Mergulho/psicologia
Imersão/fisiopatologia
Sobrevivência
[Mh] Termos MeSH secundário: Adulto
Constituição Corporal
Temperatura Baixa/efeitos adversos
Ingestão de Líquidos/fisiologia
Família
Seres Humanos
Hipotermia/etiologia
Hipotermia/fisiopatologia
Imersão/efeitos adversos
Masculino
Nova Zelândia
Estado Nutricional/fisiologia
Roupa de Proteção
Recreação
Religião e Psicologia
Trabalho de Resgate
Choque/etiologia
Choque/fisiopatologia
Estresse Psicológico
Fatores de Tempo
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180201
[Lr] Data última revisão:
180201
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171215
[St] Status:MEDLINE
[do] DOI:10.28920/dhm47.4.239-247


  2 / 9672 MEDLINE  
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[PMID]:28619304
[Au] Autor:Lin SA; Chu PY; Chen LL; Su YC; Wang SM
[Ad] Endereço:Department of Public Health, China Medical University, Taichung, Taiwan; Department of Nursing, Show Chwan Memorial Hospital, Changhua City, Taiwan.
[Ti] Título:The prevalence rate of deviations in body constitutions and related factors in follow-up stage breast cancer patients-A nationwide study.
[So] Source:Complement Ther Med;32:49-55, 2017 Jun.
[Is] ISSN:1873-6963
[Cp] País de publicação:Scotland
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: The aim of this study was to apply a rigorous traditional Chinese medicine (TCM) body constitution questionnaire (BCQ) to survey the prevalence rate of deviations in body constitution and to explore the health-related lifestyle behavior factors of deviations in body constitution. DESIGN: A cross-sectional study was administered through postal mail. Subjects were recruited from a national organization for breast cancer patients (Taiwan Breast Cancer Alliance). SETTING/MAIN OUTCOME MEASURES: Data were obtained from 311 breast cancer patients by questionnaires including a demographic record sheet, lifestyle behavior scales and the BCQ (Yang-Xu, Yin-Xu, and Stasis). Differences concerning the presence of body constitutions were analyzed by Chi-square tests and analyses of variance, and potential predictive factors were analyzed using multivariate logistic regression. RESULTS: In total, 55.3% of the subjects had a Yang-Xu constitution, 61.0% had a Yin-Xu constitution, and 47.6% had a Stasis constitution. A total of 42.8% of the patients displayed a combination of the three types of body constitutions. Feeling stressed, physical exercise, and favoring fried food were predictors of the combined Yang-Xu, Yin-Xu and Stasis constitutions (p<0.05). Staying up late was significantly associated with Yin-Xu (p=0.017), and favoring salty food was significantly associated with Stasis (p=0.019). CONCLUSIONS: A high prevalence of deviations in body constitutions was observed in the follow-up stage of breast cancer patients. Increasing the adherence to healthy lifestyle behaviors might strengthen and balance body constitution, which could improve supportive care in breast cancer survivors.
[Mh] Termos MeSH primário: Neoplasias da Mama/epidemiologia
Neoplasias da Mama/fisiopatologia
Medicina Tradicional Chinesa
Deficiência da Energia Yang/epidemiologia
Deficiência da Energia Yin/epidemiologia
[Mh] Termos MeSH secundário: Constituição Corporal
Estudos Transversais
Feminino
Seguimentos
Seres Humanos
Meia-Idade
Prevalência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170627
[Lr] Data última revisão:
170627
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170617
[St] Status:MEDLINE


  3 / 9672 MEDLINE  
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[PMID]:28441048
[Au] Autor:Dorn MJ; Bockstahler BA; Dupré GP
[Ti] Título:Influence of body weight and body conformation on the pressure-volume curve during capnoperitoneum in dogs.
[So] Source:Am J Vet Res;78(5):631-637, 2017 May.
[Is] ISSN:1943-5681
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE To evaluate the pressure-volume relationship during capnoperitoneum in dogs and effects of body weight and body conformation. ANIMALS 86 dogs scheduled for routine laparoscopy. PROCEDURES Dogs were allocated into 3 groups on the basis of body weight. Body measurements, body condition score, and body conformation indices were calculated. Carbon dioxide was insufflated into the abdomen with a syringe, and pressure was measured at the laparoscopic cannula. Volume and pressure data were processed, and the yield point, defined by use of a cutoff volume (COV) and cutoff pressure (COP), was calculated. RESULTS 20 dogs were excluded because of recording errors, air leakage attributable to surgical flaws, or trocar defects. For the remaining 66 dogs, the pressure-volume curve was linear-like until the yield point was reached, and then it became visibly exponential. Mean ± SD COP was 5.99 ± 0.805 mm Hg. No correlation was detected between yield point, body variables, or body weight. Mean COV was 1,196.2 ± 697.9 mL (65.15 ± 20.83 mL of CO /kg), and COV was correlated significantly with body weight and one of the body condition indices but not with other variables. CONCLUSION AND CLINICAL RELEVANCE In this study, there was a similar COP for all dogs of all sizes. In addition, results suggested that increasing the abdominal pressure after the yield point was reached did not contribute to a substantial increase in working space in the abdomen. No correlation was found between yield point, body variables, and body weight.
[Mh] Termos MeSH primário: Constituição Corporal
Peso Corporal
Dióxido de Carbono/administração & dosagem
Cães/cirurgia
Insuflação/veterinária
Laparoscopia/veterinária
[Mh] Termos MeSH secundário: Cavidade Abdominal
Animais
Feminino
Masculino
Pressão
Estudos Prospectivos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170719
[Lr] Data última revisão:
170719
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170426
[St] Status:MEDLINE
[do] DOI:10.2460/ajvr.78.5.631


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[PMID]:28239877
[Au] Autor:Ahlbeck Bergendahl I; Holliland PB; Hansson S; Karlöf O
[Ad] Endereço:Department of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91, Stockholm, Sweden.
[Ti] Título:Feeding range of age 1+ year Eurasian perch Perca fluviatilis in the Baltic Sea.
[So] Source:J Fish Biol;90(5):2060-2072, 2017 May.
[Is] ISSN:1095-8649
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Using the widespread Eurasian perch Perca fluviatilis as a model organism, feeding ranges were investigated using stable-isotope ratios (δ N and δ C) and body condition. Differences were found between closely located sampling sites in a littoral area without obvious migration barriers, indicating that individual fish had small feeding ranges. Body condition differences between sampled stations were consistent over 4 years. Such sedentary behaviour is important to consider in, e.g. fisheries management and environmental monitoring, as local catch regulations may be meaningful or geographic stability in sampling locations may reduce noise in data.
[Mh] Termos MeSH primário: Comportamento Alimentar
Comportamento de Retorno ao Território Vital
Percas/fisiologia
[Mh] Termos MeSH secundário: Animais
Constituição Corporal
Ecossistema
Cadeia Alimentar
Oceanos e Mares
Percas/anatomia & histologia
Suécia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171011
[Lr] Data última revisão:
171011
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170228
[St] Status:MEDLINE
[do] DOI:10.1111/jfb.13285


  5 / 9672 MEDLINE  
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[PMID]:28068838
[Au] Autor:Yu W; Ma M; Chen X; Min J; Li L; Zheng Y; Li Y; Wang J; Wang Q
[Ad] Endereço:1 Center for Studies in Constitution Research of Traditional Chinese Medicine, School of Basic Medicine, Beijing University of Chinese Medicine, Beijing 100029, P.R. China.
[Ti] Título:Traditional Chinese Medicine and Constitutional Medicine in China, Japan and Korea: A Comparative Study.
[So] Source:Am J Chin Med;45(1):1-12, 2017.
[Is] ISSN:0192-415X
[Cp] País de publicação:Singapore
[La] Idioma:eng
[Ab] Resumo:Traditional Chinese medicine (TCM), Japanese-Chinese medicine, and Korean Sasang constitutional medicine have common origins. However, the constitutional medicines of China, Japan, and Korea differ because of the influence of geographical culture, social environment, national practices, and other factors. This paper aimed to compare the constitutional medicines of China, Japan, and Korea in terms of theoretical origin, constitutional classification, constitution and pathogenesis, clinical applications and basic studies that were conducted. The constitutional theories of the three countries are all derived from the Canon of Internal Medicine or Treatise on Febrile and Miscellaneous Diseases of Ancient China. However, the three countries have different constitutional classifications and criteria. Medical sciences in the three countries focus on the clinical applications of constitutional theory. They all agree that different pathogenic laws that guide the treatment of diseases govern different constitutions; thus, patients with different constitutions are treated differently. The three countries also differ in terms of drug formulations and medication. Japanese medicine is prescribed only based on constitution. Korean medicine is based on treatment, in which drugs cannot be mixed. TCM synthesize the treatment model of constitution differentiation, disease differentiation and syndrome differentiation with the treatment thought of treating disease according to three categories of etiologic factors, which reflect the constitution as the characteristic of individual precision treatment. In conclusion, constitutional medicines of China, Japan, and Korea have the same theoretical origin, but differ in constitutional classification, clinical application of constitutional theory on the treatment of diseases, drug formulations and medication.
[Mh] Termos MeSH primário: Constituição Corporal
Medicina Tradicional Chinesa
Medicina Tradicional Coreana
[Mh] Termos MeSH secundário: China
Seres Humanos
Japão
Coreia (Geográfico)
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; REVIEW
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170214
[Lr] Data última revisão:
170214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170111
[St] Status:MEDLINE
[do] DOI:10.1142/S0192415X1750001X


  6 / 9672 MEDLINE  
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[PMID]:28056656
[Au] Autor:Martinec Nováková L; Plotená D; Havlícek J
[Ad] Endereço:Faculty of Humanities, Charles University, Prague, Czech Republic; Faculty of Science, Charles University, Prague, Czech Republic; National Institute of Mental Health, Klecany, Czech Republic.
[Ti] Título:Age and Pubertal Status-Related Changes in Reports of Perception of Personal Odors.
[So] Source:Perception;46(3-4):484-497, 2017 Mar-Apr.
[Is] ISSN:1468-4233
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:As previously suggested, preferences for kin body odor might undergo an adaptive change over the course of puberty in order to avoid potential inbreeding, resulting in aversion to body odor of the opposite-gender kin as individuals mature sexually. However, studies based on mutual body odor aversion are rather inconclusive. We therefore investigated whether children's reports of individuals smelling good or bad differed as a function of age and pubertal status. We asked 219 children (94 male) aged 10 to 15 years to assess their pubertal development using a standardized measure and to name individuals they thought smelled good or bad. Results of the present study show that the older the girls were, the more likely they were to name males than females among nice-smelling people. Further, in both girls and boys alike, children with higher puberty scores were more likely to name children than adults. Neither in girls nor in boys did we observe any concurrent effect of age or pubertal status on children's reports of persons thought to smell bad. Irrespective of whether these changes are driven by age itself or age-related phenomena, these results suggest a shift toward a more general positive attitude to peers rather than active kin avoidance.
[Mh] Termos MeSH primário: Envelhecimento/psicologia
Odorantes
Percepção Olfatória
Maturidade Sexual
[Mh] Termos MeSH secundário: Adolescente
Constituição Corporal
Criança
Feminino
Seres Humanos
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170517
[Lr] Data última revisão:
170517
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170107
[St] Status:MEDLINE
[do] DOI:10.1177/0301006616686096


  7 / 9672 MEDLINE  
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[PMID]:28052980
[Au] Autor:Murphy RA; Moore SC; Playdon M; Meirelles O; Newman AB; Milijkovic I; Kritchevsky SB; Schwartz A; Goodpaster BH; Sampson J; Cawthon P; Simonsick EM; Gerszten RE; Clish CB; Harris TB; Health ABC Study
[Ad] Endereço:Centre of Excellence in Cancer Prevention, School of Population and Public Health, University of British Columbia, Vancouver, Canada.
[Ti] Título:Metabolites Associated With Lean Mass and Adiposity in Older Black Men.
[So] Source:J Gerontol A Biol Sci Med Sci;72(10):1352-1359, 2017 Oct 01.
[Is] ISSN:1758-535X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:To identify biomarkers of body mass index, body fat, trunk fat, and appendicular lean mass, nontargeted metabolomics was performed in plasma from 319 black men in the Health, Aging and Body Composition study (median age 72 years, median body mass index 26.8 kg/m2). Body mass index was calculated from measured height and weight; percent fat, percent trunk fat, and appendicular lean mass were measured with dual-energy x-ray absorptiometry. Pearson partial correlations between body composition measures and metabolites were adjusted for age, study site, and smoking. Out of 350 metabolites, body mass index, percent fat, percent trunk fat, and appendicular lean mass were significantly correlated with 92, 48, 96, and 43 metabolites at p less than .0014. Metabolites most strongly correlated with body composition included carnitine, a marker of fatty acid oxidation (positively correlated), triacylglycerols (positively correlated), and amino acids including branched-chain amino acids (positively correlated except for acetylglycine and serine). Gaussian Graphical Models of metabolites found that 25 lipid metabolites clustered into a single network. Groups of five amino acids, three plasmalogens, and two carnitines were also observed. Findings confirm prior reports of associations between amino acids, lean mass, and fat mass in addition to associations not previously reported. Future studies should consider whether these metabolites are relevant for metabolic disease processes.
[Mh] Termos MeSH primário: Adiposidade
Afroamericanos
Constituição Corporal
Metabolômica/métodos
[Mh] Termos MeSH secundário: Absorciometria de Fóton
Idoso
Distribuição da Gordura Corporal
Índice de Massa Corporal
Peso Corporal
Feminino
Seres Humanos
Estudos Longitudinais
Masculino
Medicare
Estudos Prospectivos
Estados Unidos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171002
[Lr] Data última revisão:
171002
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170106
[St] Status:MEDLINE
[do] DOI:10.1093/gerona/glw245


  8 / 9672 MEDLINE  
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[PMID]:28046027
[Au] Autor:Kim T; Park AY; Baek Y; Cha S
[Ad] Endereço:Mibyeong Research Center, Korea Institute of Oriental Medicine, Yuseong-gu, Daejeon, Republic of Korea.
[Ti] Título:Genome-Wide Association Study Reveals Four Loci for Lipid Ratios in the Korean Population and the Constitutional Subgroup.
[So] Source:PLoS One;12(1):e0168137, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Circulating lipid ratios are considered predictors of cardiovascular risks and metabolic syndrome, which cause coronary heart diseases. One constitutional type of Korean medicine prone to weight accumulation, the Tae-Eum type, predisposes the consumers to metabolic syndrome, hypertension, diabetes mellitus, etc. Here, we aimed to identify genetic variants for lipid ratios using a genome-wide association study (GWAS) and followed replication analysis in Koreans and constitutional subgroups. GWASs in 5,292 individuals of the Korean Genome and Epidemiology Study and replication analyses in 2,567 subjects of the Korea medicine Data Center were performed to identify genetic variants associated with triglyceride (TG) to HDL cholesterol (HDLC), LDL cholesterol (LDLC) to HDLC, and non-HDLC to HDLC ratios. For subgroup analysis, a computer-based constitution analysis tool was used to categorize the constitutional types of the subjects. In the discovery stage, seven variants in four loci, three variants in three loci, and two variants in one locus were associated with the ratios of log-transformed TG:HDLC (log[TG]:HDLC), LDLC:HDLC, and non-HDLC:HDLC, respectively. The associations of the GWAS variants with lipid ratios were replicated in the validation stage: for the log[TG]:HDLC ratio, rs6589566 near APOA5 and rs4244457 and rs6586891 near LPL; for the LDLC:HDLC ratio, rs4420638 near APOC1 and rs17445774 near C2orf47; and for the non-HDLC:HDLC ratio, rs6589566 near APOA5. Five of these six variants are known to be associated with TG, LDLC, and/or HDLC, but rs17445774 was newly identified to be involved in lipid level changes in this study. Constitutional subgroup analysis revealed effects of variants associated with log[TG]:HDLC and non-HDLC:HDLC ratios in both the Tae-Eum and non-Tae-Eum types, whereas the effect of the LDLC:HDLC ratio-associated variants remained only in the Tae-Eum type. In conclusion, we identified three log[TG]:HDLC ratio-associated variants, two LDLC:HDLC ratio-associated variants, and one non-HDLC:HDLC-associated variant in Koreans and the constitutional subgroups.
[Mh] Termos MeSH primário: Doenças Cardiovasculares/genética
HDL-Colesterol/sangue
LDL-Colesterol/sangue
Estudo de Associação Genômica Ampla
Síndrome Metabólica/genética
Triglicerídeos/sangue
[Mh] Termos MeSH secundário: Constituição Corporal/genética
Doenças Cardiovasculares/sangue
Doenças Cardiovasculares/etnologia
Colesterol/sangue
Estudos de Coortes
Feminino
Variação Genética
Genótipo
Seres Humanos
Masculino
Medicina Tradicional Coreana
Síndrome Metabólica/sangue
Síndrome Metabólica/etnologia
Polimorfismo de Nucleotídeo Único
Análise de Regressão
República da Coreia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cholesterol, HDL); 0 (Cholesterol, LDL); 0 (Triglycerides); 97C5T2UQ7J (Cholesterol)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170104
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0168137


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[PMID]:27993483
[Au] Autor:He J; Xu X; Zhu J; Zhu B; Zhang B; Lu L; He X; Bai X; Xu X; Zou H
[Ad] Endereço:Department of Preventative Ophthalmology, Shanghai Eye Disease Prevention and Treatment Center, Shanghai, China.
[Ti] Título:Lens Power, Axial Length-to-Corneal Radius Ratio, and Association with Diabetic Retinopathy in the Adult Population with Type 2 Diabetes.
[So] Source:Ophthalmology;124(3):326-335, 2017 Mar.
[Is] ISSN:1549-4713
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To calculate crystalline lens power and to determine the relationship between ocular biometry and diabetic retinopathy (DR) in an adult population with type 2 diabetes mellitus (T2DM). DESIGN: Cross-sectional, population-based study. PARTICIPANTS: Patients with T2DM from the Beixinjing community, Changning district, Shanghai. METHODS: Random clustering sampling was used to identify adults with T2DM in the Beixinjing community. Spherical equivalent (SE) was determined by subjective refraction that achieved the best corrected vision. Axial length (AL), corneal power (CP), and anterior chamber depth (ACD) were measured using the IOLMaster. Diabetic retinopathy and diabetic macular edema (DME) were assessed according to the international DR classification. MAIN OUTCOME MEASURES: The crystalline lens power was calculated using the Bennett-Rabbetts formula. The AL-to-corneal radius ratio (AL/CR ratio) was defined as the axial length divided by the mean corneal radius of curvature. RESULTS: A total of 4011 eyes of 2057 subjects with T2DM were included in the analysis. In multivariate logistic models adjusting for age, sex, duration of diabetes, glycosylated hemoglobin A1c, serum creatinine, body mass index, systolic blood pressure, and cataract, after categorizing values into quartiles, there were trend associations between lens power and any DR (P = 0.01), between AL/CR ratio and any DR (P = 0.02), and between AL and any DR (P = 0.03), between lens power and moderate DR (P = 0.02), and between AL and moderate DR (P = 0.02); eyes with higher AL/CR ratio were less likely to have any DR (odds ratio [OR], 0.43; 95% confidence interval [CI], 0.24-0.78; P = 0.01 per 1 increase) and moderate DR (OR, 0.44; 95% CI, 0.21-0.93; P = 0.03 per 1 increase), eyes with longer AL were less likely to have any DR (OR, 0.88; 95% CI, 0.81-0.95; P = 0.002 per millimeter increase) or moderate DR (OR, 0.89; 95% CI, 0.80-0.98; P = 0.02 per millimeter increase), and eyes with higher SE were more likely to have any DR (OR, 1.08; 95% CI, 1.03-1.13; P = 0.003 per diopter increase). CONCLUSIONS: In persons with T2DM, lens power, AL/CR ratio, and AL were associated with the presence of any DR and moderate DR. These findings suggested that globe elongation plays a major role in protective effects against DR, with contributions from lens power and other refractive components.
[Mh] Termos MeSH primário: Comprimento Axial do Olho/patologia
Córnea/patologia
Diabetes Mellitus Tipo 2/fisiopatologia
Retinopatia Diabética/fisiopatologia
Cristalino/fisiopatologia
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Câmara Anterior/patologia
Biometria
Constituição Corporal
Estudos de Coortes
Creatinina/sangue
Estudos Transversais
Diabetes Mellitus Tipo 2/diagnóstico
Retinopatia Diabética/diagnóstico
Técnicas de Diagnóstico Oftalmológico
Feminino
Hemoglobina A Glicada/metabolismo
Seres Humanos
Edema Macular/diagnóstico
Edema Macular/fisiopatologia
Masculino
Meia-Idade
Razão de Chances
Refração Ocular/fisiologia
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Glycated Hemoglobin A); 0 (hemoglobin A1c protein, human); AYI8EX34EU (Creatinine)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161221
[St] Status:MEDLINE


  10 / 9672 MEDLINE  
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[PMID]:27870855
[Au] Autor:Stenkewitz U; Nielsen ÓK; Skírnisson K; Stefánsson G
[Ad] Endereço:Faculty of Life and Environmental Sciences, University of Iceland, Askja, Reykjavík, Iceland.
[Ti] Título:Host-Parasite Interactions and Population Dynamics of Rock Ptarmigan.
[So] Source:PLoS One;11(11):e0165293, 2016.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Populations of rock ptarmigan (Lagopus muta) in Iceland fluctuate in multiannual cycles with peak numbers c. every 10 years. We studied the ptarmigan-parasite community and how parasites relate to ptarmigan age, body condition, and population density. We collected 632 ptarmigan in northeast Iceland in early October from 2006 to 2012; 630 (99.7%) were infected with at least one parasite species, 616 (98%) with ectoparasites, and 536 (85%) with endoparasites. We analysed indices for the combined parasite community (16 species) and known pathogenic parasites, two coccidian protozoans Eimeria muta and Eimeria rjupa, two nematodes Capillaria caudinflata and Trichostrongylus tenuis, one chewing louse Amyrsidea lagopi, and one skin mite Metamicrolichus islandicus. Juveniles overall had more ectoparasites than adults, but endoparasite levels were similar in both groups. Ptarmigan population density was associated with endoparasites, and in particular prevalence of the coccidian parasite Eimeria muta. Annual aggregation level of this eimerid fluctuated inversely with prevalence, with lows at prevalence peak and vice versa. Both prevalence and aggregation of E. muta tracked ptarmigan population density with a 1.5 year time lag. The time lag could be explained by the host specificity of this eimerid, host density dependent shedding of oocysts, and their persistence in the environment from one year to the next. Ptarmigan body condition was negatively associated with E. muta prevalence, an indication of their pathogenicity, and this eimerid was also positively associated with ptarmigan mortality and marginally inversely with fecundity. There were also significant associations between fecundity and chewing louse Amyrsidea lagopi prevalence (negative), excess juvenile mortality and nematode Capillaria caudinflata prevalence (positive), and adult mortality and skin mite Metamicrolichus islandicus prevalence (negative). Though this study is correlational, it provides strong evidence that E. muta through time-lag in prevalence with respect to host population size and by showing significant relations with host body condition, mortality, and fecundity could destabilize ptarmigan population dynamics in Iceland.
[Mh] Termos MeSH primário: Eimeria/fisiologia
Galliformes/parasitologia
Ácaros/fisiologia
Nematoides/fisiologia
Ftirápteros/fisiologia
[Mh] Termos MeSH secundário: Envelhecimento/fisiologia
Animais
Constituição Corporal
Fertilidade
Galliformes/fisiologia
Interações Hospedeiro-Parasita
Islândia
Dinâmica Populacional
Prevalência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170626
[Lr] Data última revisão:
170626
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161122
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0165293



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