The clinical relevance of oliguria in the critically ill patient : Analysis of a large observational database

Funding Information: Marc Leone reports receiving consulting fees from Amomed and Aguettant; lecture fees from MSD, Pfizer, Octapharma, 3 M, Aspen, Orion; travel support from LFB; and grant support from PHRC IR and his institution. JLV is the Editor-in-Chief of Critical Care. The other authors declare that they have no relevant financial interests. Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.Background: Urine output is widely used as one of the criteria for the diagnosis and staging of acute renal failure, but few studies have specifically assessed the role of oliguria as a marker of acute renal failure or outcomes in general intensive care unit (ICU) patients. Using a large multinational database, we therefore evaluated the occurrence of oliguria (defined as a urine output 16 years) patients in the ICON audit who had a urine output measurement on the day of admission were included. To investigate the association between oliguria and mortality, we used a multilevel analysis. Results: Of the 8292 patients included, 2050 (24.7%) were oliguric during the first 24 h of admission. Patients with oliguria on admission who had at least one additional 24-h urine output recorded during their ICU stay (n = 1349) were divided into three groups: transient - oliguria resolved within 48 h after the admission day (n = 390 [28.9%]), prolonged - oliguria resolved > 48 h after the admission day (n = 141 [10.5%]), and permanent - oliguria persisting for the whole ICU stay or again present at the end of the ICU stay (n = 818 [60.6%]). ICU and hospital mortality rates were higher in patients with oliguria than in those without, except for patients with transient oliguria who had significantly lower mortality rates than non-oliguric patients. In multilevel analysis, the need for RRT was associated with a significantly higher risk of death (OR = 1.51 [95% CI 1.19-1.91], p = 0.001), but the presence of oliguria on admission was not (OR = 1.14 [95% CI 0.97-1.34], p = 0.103). Conclusions: Oliguria is common in ICU patients and may have a relatively benign nature if only transient. The duration of oliguria and need for RRT are associated with worse outcome.publishersversionPeer reviewe

Progressive skin fibrosis is associated with a decline in lung function and worse survival in patients with diffuse cutaneous systemic sclerosis in the European Scleroderma Trials and Research (EUSTAR) cohort.

Objectives To determine whether progressive skin fibrosis is associated with visceral organ progression and mortality during follow-up in patients with diffuse cutaneous systemic sclerosis (dcSSc). Methods We evaluated patients from the European Scleroderma Trials and Research database with dcSSc, baseline modified Rodnan skin score (mRSS) ≥7, valid mRSS at 12±3 months after baseline and ≥1 annual follow-up visit. Progressive skin fibrosis was defined as an increase in mRSS >5 and ≥25% from baseline to 12±3 months. Outcomes were pulmonary, cardiovascular and renal progression, and all-cause death. Associations between skin progression and outcomes were evaluated by Kaplan-Meier survival analysis and multivariable Cox regression. Results Of 1021 included patients, 78 (7.6%) had progressive skin fibrosis (skin progressors). Median follow-up was 3.4 years. Survival analyses indicated that skin progressors had a significantly higher probability of FVC decline ≥10% (53.6% vs 34.4%; p<0.001) and all-cause death (15.4% vs 7.3%; p=0.003) than non-progressors. These significant associations were also found in subgroup analyses of patients with either low baseline mRSS (≤22/51) or short disease duration (≤15 months). In multivariable analyses, skin progression within 1 year was independently associated with FVC decline ≥10% (HR 1.79, 95% CI 1.20 to 2.65) and all-cause death (HR 2.58, 95% CI 1.31 to 5.09). Conclusions Progressive skin fibrosis within 1 year is associated with decline in lung function and worse survival in dcSSc during follow-up. These results confirm mRSS as a surrogate marker in dcSSc, which will be helpful for cohort enrichment in future trials and risk stratification in clinical practice

The pollen tube journey in the pistil and imaging the in vivo process by two-photon microscopy

The process of pollen germination and tube growth in the pistil involves a series of cell-cell interactions, some facilitating fertilization while others prohibiting pollen tube access to the female gametophyte, either because of incompatibility or as a result of mechanisms to avert polyspermy and to ensure reproductive success. Understanding pollen tube growth and guidance to the female gametophyte has long been a pursuit among plant biologists, and observations indicate that diverse strategies may be adopted by different plant species. Recent studies in Arabidopsis, maize, and Torenia fournieri suggest that low molecular weight secretory molecules probably play major roles in the short-range attraction of pollen tubes to the female gametophyte. The process of pollen tube growth in the pistil occurs beneath several cell layers so much of the information that conveys the intimate partnership between penetrating pollen tubes and the female tissues has come from fixed samples and observations of in vitro pollen tube growth responses to female factors. A unique glimpse of the in vivo pollen germination and tube growth process is provided here by intra-vital two-photon excitation (TPE) microscopy of pollinated Arabidopsis pistils that remained on intact plants. Further discoveries of critical factors of male or female origins and how they control the pollen tube growth and fertilization process will broaden our understanding of the common themes and diverse strategies that plants have evolved to ensure reproductive success. The advancement of imaging technology to monitor pollination and fertilization and the development of probes to monitor various aspects of the pollen tube growth process, including pollen intracellular dynamics, will allow us to superimpose details obtained from studying pollen tube growth in culture conditions to interpret and understand the in vivo events

Ethylene-independent signaling by the ethylene precursor ACC in Arabidopsis ovular pollen tube attraction

The phytohormone ethylene has numerous effects on plant growth and development. Its immediate precursor, 1-aminocyclopropane-1-carboxylic acid (ACC), is a non-proteinogenic amino acid produced by ACC SYNTHASE (ACS). ACC is often used to induce ethylene responses. Here, we demonstrate that ACC exhibits ethylene-independent signaling in Arabidopsis thaliana reproduction. By analyzing an acs octuple mutant with reduced seed set, we find that ACC signaling in ovular sporophytic tissue is involved in pollen tube attraction, and promotes secretion of the pollen tube chemoattractant LURE1.2. ACC activates Ca2+-containing ion currents via GLUTAMATE RECEPTOR-LIKE (GLR) channels in root protoplasts. In COS-7 cells expressing moss PpGLR1, ACC induces the highest cytosolic Ca2+ elevation compared to all twenty proteinogenic amino acids. In ovules, ACC stimulates transient Ca2+ elevation, and Ca2+ influx in octuple mutant ovules rescues LURE1.2 secretion. These findings uncover a novel ACC function and provide insights for unraveling new physiological implications of ACC in plants.status: publishe

ATLANTIC MAMMAL TRAITS: a data set of morphological traits of mammals in the Atlantic Forest of South America

Univ Estadual Paulista, UNESP, Dept Ecol, Inst Biociencias, BR-13506900 Rio Claro, SP, BrazilUniv Fed Santa Catarina, Ctr Ciencias Biol, Dept Ecol & Zool, Florianopolis, SC, Brazil|Caipora Cooperat, Florianopolis, SC, BrazilUniv Estadual Santa Cruz, Programa Posgrad Ecol & Conservac Biodiversidade, Lab Ecol Aplicada Conservacao, Ilheus, BA, BrazilUniv Estadual Santa Cruz, CMARF, Ilheus, BA, BrazilUniv Brasilia, Dept Ecol, Inst Ciencias Biol, Lab Ecol Vertebrados, Brasilia, DF, BrazilUniv Fed Santa Maria, Dept Ecol & Evolut, Santa Maria, RS, BrazilUniv Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, SP, BrazilUniv Fed Espirito Santo, Ctr Ciencias Humanas & Nat, Dept Ciencias Biol, Vitoria, ES, BrazilUniv Fed Minas Gerais, Inst Ciencias Biol, Dept Biol Geral, Belo Horizonte, MG, BrazilUniv Fed Mato Grosso de Sul, Inst Biociencias, Campo Grande, MS, BrazilUniv Fed Parana, Dept Zool, Curitiba, Parana, BrazilUniv Fed Parana, Programa Posgrad Ecol & Conservcao, Curitiba, Parana, BrazilUniv Estado Rio de Janeiro, Dept Ecol, Rio De Janeiro, RJ, BrazilUniv Estadual Paulista, UNESP, Inst Biociencias, Dept Zool, Rio Claro, SP, BrazilUniv Extremo Sul Catarinense, Programa Posgrad Ciencias Ambientais, Criciuma, SC, BrazilUniv Sao Paulo, ESALQ, Dept Ciencias Biol, Piracicaba, SP, BrazilUniv Nacl Misiones, CONICET, Inst Biol Subtrop, Puerto Iguazu, Misiones, ArgentinaAsociac Civil Ctr Invest Bosque Atlantico, Puerto Iguazu, Misiones, ArgentinaFIOCRUZ Amazonas, Inst Leonidas & Maria Deane, Manaus, Amazonas, BrazilUniv Estadual Paulista, UNESP, Dept Zootecnia, Jaboticabal, SP, BrazilField Museum Nat Hist, Integrated Res Ctr, Chicago, IL 60605 USAUniv Fed Pernambuco, Ctr Biociencias, Dept Zool, Lab Ciencia Aplicada Conservacao Biodiversidade, Recife, PE, BrazilInst Chico Mendes Conservacao Biodiversidade, Ctr Nacl Pesquisa & Conservacao Mamiferos Carnivo, Sao Paulo, BrazilUniv Vale Rio dos Sinos, Sao Leopoldo, RS, BrazilUniv Reg Cariri, Dept Biol, Lab Ecol Mamiferos, Crato, CE, BrazilUniv Fed Rio de Janeiro, Dept Ecol, Lab Vertebrados, Rio De Janeiro, RJ, BrazilUniv Federal Mato Grosso do Sul, Programa Posgrad Ecol & Conservacao, Campo Grande, MS, BrazilIPE, Nazare Paulista, SP, BrazilUniv Fed Minas Gerais, Programa Posgrad Zool, Belo Horizonte, MG, BrazilUniv Estado Minas Gerais, Dept Ciencias Biol, Ibirite, MG, BrazilPREA, Programa Educ Ambiental, Juiz De Fora, MG, BrazilChinese Acad Sci, Inst Zool, Key Lab Zool Systemat and Evolut, Beijing, Peoples R ChinaMinist Salud Nacion, Inst Nacl Med Trop INMeT, Puerto Iguazu, Misiones, ArgentinaUniv Fed Vicosa, Dept Engn Florestal, Vicosa, MG, BrazilUniv Fed Goias, Inst Biociencias, Jatai, Go, BrazilInst Chico Mendes Conservacao Biodiversidade ICMB, Ctr Nacl Pesquisa & Conservacao Primatas Brasilei, Joao Pessoa, PB, BrazilCtr Rescate Fauna Silvestre Guira Oga, Puerto Iguazu, ArgentinaFdn Hist Nat Felix de Azara, Buenos Aires, ArgentinaProjeto Carnivoros Iguacu, Foz Do Iguacu, PR, BrazilUniv Estadual Paulista, Dept Med Vet Prevent & Reprod Anim, Fac Ciencias Agr & Vet Jaboticabal, Jaboticabal, SP, BrazilUniv Fed Integracao Latinoamer, Inst Latinoamer Ciencias Vida & Nat, Foz Do Iguacu, PR, BrazilUniv Fed Sao Paulo, Dept Ciencias Ambientais, Diadema, SP, BrazilUniv Fed Paraiba, Dept Sistemat & Ecol, Lab Mamiferos, Joao Pessoa, Paraiba, BrazilIUCN Peccary Specialist Grp, Campo Grande, MS, BrazilWWF Brazil, Campo Grande, MS, BrazilChicago State Univ, Dept Biol Sci, Chicago, IL USAUniv Fed Rio de Janeiro, Nucleo Ecol & Desenvolvimento Socioambiental Maca, Macae, RJ, BrazilUniv Vila Velha, Programa Posgrad Ecol Ecossistemas, Vila Velha, ES, BrazilUniv Fed Rio de Janeiro, Museu Nacl, Dept Vertebrados, Rio De Janeiro, RJ, BrazilUniv Fed Bahia, Programa Posgrad Ecol, Salvador, BA, BrazilUniv Fed Paraiba, Dept Sistemat & Ecol, Programa Posgrad Ciencias Biol Zool, Lab Mamiferos, Joao Pessoa, Paraiba, BrazilUniv Fed Sao Paulo, Dept Ciencias Ambientais, Diadema, SP, BrazilWeb of Scienc