LIVIVO - Search results -

Search results

Result 1 - 10 of total 248

Search options

Article ; Online: Gold perfusion experiments support the multi-layered, mesoporous nature of intervessel pit membranes in angiosperm xylem.

Zhang, Ya / Pereira, Luciano / Kaack, Lucian / Liu, Jiabao / Jansen, Steven

2024 Volume 242, Issue 2, Page(s) 493–506

Abstract: Fluid transport across intervessel pit membranes of angiosperm xylem plays a major role in plant transpiration, with transport resistance largely depending on pore constriction sizes. Traditionally, fluid particles traversing pit membranes are assumed to ...

Abstract	Fluid transport across intervessel pit membranes of angiosperm xylem plays a major role in plant transpiration, with transport resistance largely depending on pore constriction sizes. Traditionally, fluid particles traversing pit membranes are assumed to cross a single instead of multiple pore constrictions. We tested a multi-layered pit membrane model in xylem of eight angiosperm species by estimating the size frequency of pore constrictions in relation to pit membrane thickness and compared modelled data with perfusion characteristics of nanoscale gold particles based on transmission electron microscopy. The size frequency of modelled pore constrictions showed similar patterns to the measured number of perfused particle sizes inside pit membranes, although frequency values measured were 10-50 times below modelled data. Small particles enter pit membranes most easily, especially when injected in thin pit membranes. The trapping of gold particles by pore constrictions becomes more likely with increasing pore constriction number and pit membrane thickness. While quantitative differences between modelled and experimental data are due to various practical limitations, their qualitative agreement supports a multi-layered pit membrane model with multiple pore constrictions. Pore constrictions between 5 and 50 nm are realistic, and confirm the mesoporous nature of pit membranes.
MeSH term(s)	Gold ; Magnoliopsida ; Xylem ; Biological Transport ; Perfusion ; Water
Chemical Substances	Gold (7440-57-5) ; Water (059QF0KO0R)
Language	English
Publishing date	2024-02-25
Publishing country	England
Document type	Journal Article
ZDB-ID	208885-x
ISSN	1469-8137 ; 0028-646X
ISSN (online)	1469-8137
ISSN	0028-646X
DOI	10.1111/nph.19608
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Bonn / Germany

Z 868: Show issues

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article: Current and Emerging Markers and Tools Used in the Diagnosis and Management of Chronic Kidney Disease-Mineral and Bone Disorder in Non-Dialysis Adult Patients.

Fusaro, Maria / Pereira, Luciano / Bover, Jordi

Journal of clinical medicine

2023 Volume 12, Issue 19

Abstract: Chronic kidney disease (CKD) is a significant public health concern associated with significant morbidity and has become one of the foremost global causes of death in recent years. A frequent comorbidity of CKD is secondary hyperparathyroidism (SHPT), ... ...

Abstract	Chronic kidney disease (CKD) is a significant public health concern associated with significant morbidity and has become one of the foremost global causes of death in recent years. A frequent comorbidity of CKD is secondary hyperparathyroidism (SHPT), exemplified by high serum parathyroid hormone (PTH) levels. The mineral metabolism disturbances resulting from CKD and progression to SHPT are currently considered part of the definition of chronic kidney disease-mineral and bone disorder (CKD-MBD). However, CKD-MBD does not only include abnormalities in laboratory-measured parameters; it is a complex condition characterized by dysregulation of bone turnover, mineralization, growth and strength, accompanied by vascular or another soft-tissue calcification. Together, this increases the risk of bone fractures, cardiovascular disease, and overall mortality in CKD-MBD patients. Monitoring serum markers is essential in diagnosing SHPT and CKD-MBD, and there are several recognized indicators for prognosis, optimal clinical management and treatment response in late-stage kidney disease patients receiving dialysis. However, far fewer markers have been established for patients with non-dialysis CKD. This review provides an overview of current and emerging markers and tools used in the diagnosis and management of CKD-MBD in non-dialysis adult patients.
Language	English
Publishing date	2023-09-30
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2662592-1
ISSN	2077-0383
ISSN	2077-0383
DOI	10.3390/jcm12196306
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Game-based learning enhances students' understanding of endocrine physiology in veterinary medicine.

Afonso, Marcos Vinícius Ramos / Lopes, Rodrigo Braga / Andrade, Eric Francelino / Pereira, Luciano José

Advances in physiology education

2024 Volume 48, Issue 2, Page(s) 155–163

Abstract: Endocrine physiology is a complex subject for students. Game-based learning (GBL) and case-based learning (CBL) are active methodologies that are widely used because of their potential for motivation and greater proximity to the reality of modern ... ...

Abstract	Endocrine physiology is a complex subject for students. Game-based learning (GBL) and case-based learning (CBL) are active methodologies that are widely used because of their potential for motivation and greater proximity to the reality of modern students. We evaluated the effectiveness of GBL and CBL among veterinary medicine students compared with a control group using peer tutoring. Students (
MeSH term(s)	Humans ; Learning ; Students ; Motivation ; Problem Solving ; Surveys and Questionnaires
Language	English
Publishing date	2024-01-18
Publishing country	United States
Document type	Journal Article
ZDB-ID	1024917-5
ISSN	1522-1229 ; 1043-4046
ISSN (online)	1522-1229
ISSN	1043-4046
DOI	10.1152/advan.00182.2023
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 5611: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (2.OG) ab Jg. 2022: Lesesaal (EG)
Uc I Zs.89: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Corrigendum to "Surface-guided radiotherapy for lung cancer can reduce the number of close patient contacts without compromising initial setup accuracy" [Tech. Innov. Patient Support Radiat. Oncol. 20 (2021) 61-63].

Blake, Nicola / Pereira, Luciano / Eaton, David J / Dobson, Deirdre

Technical innovations & patient support in radiation oncology

2023 Volume 25, Page(s) 100197

Abstract: This corrects the article DOI: 10.1016/j.tipsro.2021.11.005.]. ...

Abstract	[This corrects the article DOI: 10.1016/j.tipsro.2021.11.005.].
Language	English
Publishing date	2023-01-07
Publishing country	England
Document type	Published Erratum
ISSN	2405-6324
ISSN (online)	2405-6324
DOI	10.1016/j.tipsro.2022.12.004
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- Full text online
- Order with fees

Article ; Online: Physical exercise and peritoneal dialysis: An area yet to be explored.

Maia Neves Menezes, José Inacio / Lopes Pereira, Luciano Artur

Nefrologia

2022 Volume 42, Issue 3, Page(s) 265–272

Abstract: Health-related quality of life (HRQoL) of patients suffering from chronic kidney disease (CKD) is profoundly impaired by their frailty, disability and decreased physical capacity. Especially among older patients, a high prevalence of low physical ... ...

Abstract	Health-related quality of life (HRQoL) of patients suffering from chronic kidney disease (CKD) is profoundly impaired by their frailty, disability and decreased physical capacity. Especially among older patients, a high prevalence of low physical activity levels and reduced functional performance has been reported. Physical exercise training has been shown to have a beneficial impact, counteracting these same hazardous consequences of inactivity and sedentarism both on CKD and end-stage kidney disease (ESKD) patients on hemodialysis (HD) treatment. The evidence-based knowledge on the effects of physical exercise on ESKD patients undergoing Peritoneal Dialysis (PD) treatment is scarce, even though this is a continually growing population that shares the same risk factors and desired clinical outcomes as the previously mentioned groups of patients. Further investigation will be necessary to clarify whether this exercise-based approach may be suitable for the PD population. This paper's purpose is to review the available literature, including randomized controlled trials, reviews and meta-analysis results that assessed the impact of physical exercise on patients under PD treatment bearing in mind their HRQoL, physical functioning and cardiovascular parameters. Furthermore, it aims to evaluate the perceived significant barriers and limitations of the PD population in what concerns physical exercise practice and how nephrologists should address them.
MeSH term(s)	Exercise ; Humans ; Kidney Failure, Chronic/etiology ; Peritoneal Dialysis/adverse effects ; Quality of Life ; Renal Insufficiency, Chronic/etiology ; Renal Insufficiency, Chronic/therapy
Language	English
Publishing date	2022-10-06
Publishing country	Spain
Document type	Journal Article ; Meta-Analysis ; Review
ZDB-ID	2837917-2
ISSN	2013-2514 ; 2013-2514
ISSN (online)	2013-2514
ISSN	2013-2514
DOI	10.1016/j.nefroe.2021.02.012
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: The bone-vessel axis in chronic kidney disease: An update on biochemical players and its future role in laboratory medicine.

Pereira, Luciano / Frazão, João M

Clinica chimica acta; international journal of clinical chemistry

2020 Volume 508, Page(s) 221–227

Abstract: Vascular wall calcification (VC) is highly prevalent in patients with chronic kidney disease (CKD). In CKD, VC is more frequent and severe than in the general population and it is associated with increased cardiovascular mortality and morbidity. In the ... ...

Abstract	Vascular wall calcification (VC) is highly prevalent in patients with chronic kidney disease (CKD). In CKD, VC is more frequent and severe than in the general population and it is associated with increased cardiovascular mortality and morbidity. In the last years, laboratory and clinical evidence have drawn the attention to the relationship between bone disease and VC in CKD patients, leading to the concept of a bone-vessel or bone-vascular axis. It means that disorders of bone volume and bone turnover may influence the risk of VC and ultimately the high risk of cardiovascular mortality. In fact, a higher burden of VC has been associated to low bone volume and low bone turnover in hemodialysis (HD) patients with renal osteodystrophy characterized by histomorphometric evaluation of bone biopsies. The molecular mechanisms underlying the regulation of bone cells and vascular cells in CKD are poorly understood. In this review, we discuss relevant evidence linking bone disorders and VC in CKD and also rising molecular players involved in this bone-vascular axis. Indeed, accumulating data is available for two proposed systems: receptor activator for nuclear factor kB (RANK)/ RANK ligand (RANKL)/osteoprotegerin (OPG) system and inhibitors of Wnt signaling - mainly sclerostin. Although they are promising biochemical markers linking bone formation and bone reabsorption with VC, there is a long way to go as long evidence from laboratory studies is often divergent to the clinical data as will be discussed. Future prospective studies are needed in order to evaluate the role of these biochemical players as useful clinical markers for VC, bone volume and perhaps bone turnover.
MeSH term(s)	Bone and Bones ; Chronic Kidney Disease-Mineral and Bone Disorder/diagnosis ; Humans ; Laboratories ; Prospective Studies ; Renal Insufficiency, Chronic ; Vascular Calcification
Language	English
Publishing date	2020-05-15
Publishing country	Netherlands
Document type	Journal Article ; Review
ZDB-ID	80228-1
ISSN	1873-3492 ; 0009-8981
ISSN (online)	1873-3492
ISSN	0009-8981
DOI	10.1016/j.cca.2020.05.023
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Ud II Zs.173: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Physical exercise and peritoneal dialysis: An area yet to be explored.

Maia Neves Menezes, José Inacio / Lopes Pereira, Luciano Artur

Nefrologia

2021

Abstract	Health-related quality of life (HRQoL) of patients suffering from chronic kidney disease (CKD) is profoundly impaired by their frailty, disability and decreased physical capacity. Especially among older patients, a high prevalence of low physical activity levels and reduced functional performance has been reported. Physical exercise training has been shown to have a beneficial impact, counteracting these same hazardous consequences of inactivity and sedentarism both on CKD and end-stage kidney disease (ESKD) patients on hemodialysis (HD) treatment. The evidence-based knowledge on the effects of physical exercise on ESKD patients undergoing Peritoneal Dialysis (PD) treatment is scarce, even though this is a continually growing population that shares the same risk factors and desired clinical outcomes as the previously mentioned groups of patients. Further investigation will be necessary to clarify whether this exercise-based approach may be suitable for the PD population. This paper's purpose is to review the available literature, including randomized controlled trials, reviews and meta-analysis results that assessed the impact of physical exercise on patients under PD treatment bearing in mind their HRQoL, physical functioning and cardiovascular parameters. Furthermore, it aims to evaluate the perceived significant barriers and limitations of the PD population in what concerns physical exercise practice and how nephrologists should address them.
Language	Spanish
Publishing date	2021-08-18
Publishing country	Spain
Document type	Journal Article ; Review
ZDB-ID	2837917-2
ISSN	2013-2514 ; 2013-2514
ISSN (online)	2013-2514
ISSN	2013-2514
DOI	10.1016/j.nefro.2021.02.007
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: The urogenital microbiome in chronic kidney disease patients on peritoneal dialysis.

Araujo, Ricardo / Merino-Ribas, Ana / Pereira, Luciano / Campos, Joana / Silva, Nádia / Alencastre, Inês Soares / Pestana, Manuel / Sampaio-Maia, Benedita

Nefrologia

2024 Volume 44, Issue 2, Page(s) 194–203

Abstract: Introduction and objectives: Diabetes, dyslipidemia, older age, gender, urinary tract infections, and recent antibiotic intake have been associated with a decrease in the urobiome richness and other fluctuations in this microbiome. Gut and blood ... ...

Abstract	Introduction and objectives: Diabetes, dyslipidemia, older age, gender, urinary tract infections, and recent antibiotic intake have been associated with a decrease in the urobiome richness and other fluctuations in this microbiome. Gut and blood microbiome have been reported to be altered in patients with chronic kidney disease (CKD), and specifically in peritoneal dialysis (PD) patients. Still, there are currently no studies describing the urogenital microbiome in CKD-PD patients. In this study we characterized the urobiome profile in 46 PD patients and analyzed its clinical and inflammatory parameters. Materials and methods: Mid-stream urine, fecal and blood samples were collected from 46 patients undergoing PD at Centro Hospitalar Universitário de São João (CHUSJ) in Porto, Portugal. Exclusion criteria were age under 18 years old, inability to give informed consent, history of infection in the last three months, and antibiotic intake in the last three months. The microbiome communities were analyzed by amplification and sequencing of the V3-V4 region of the bacterial 16S rRNA gene. Correlations with the patients' clinical data and inflammatory profile were performed. Results: CKD-PD patients presented a unique urobiome profile dominated by Bacillota, Actinomycetota and Pseudomonadota and characterized by a lower Shannon diversity than fecal and blood microbiome. The taxonomic profiles of urogenital samples were organized in multiple subtypes dominated by populations of Lactobacillus, Staphylococcus, Streptococcus, Gardnerella, Prevotella, Escherichia-Shigella, being similar to other non-PD-CKD patients. Gender, sCD14, residual diuresis and history of peritonitis were significantly associated to variations in the urobiome. Although not reaching statistical significance, diabetes and the time on PD also showed association with particular taxonomic groups. Depletion of Gardnerella, Staphylococcus, Corynebacterium, Lactobacillus or Dermabacter populations correlated with CKD-PD patients with history of diabetes, history of peritonitis and altered levels of sCD14. Conclusions: Our results highlight urogenital microbiome as a potential partner and/or marker in the overall health state of CKD-PD patients.
MeSH term(s)	Humans ; Female ; Male ; Peritoneal Dialysis/adverse effects ; Middle Aged ; Microbiota ; Renal Insufficiency, Chronic/microbiology ; Renal Insufficiency, Chronic/therapy ; Renal Insufficiency, Chronic/complications ; Aged ; Urogenital System/microbiology ; Adult ; Feces/microbiology
Language	English
Publishing date	2024-05-02
Publishing country	Spain
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2837917-2
ISSN	2013-2514 ; 2013-2514
ISSN (online)	2013-2514
ISSN	2013-2514
DOI	10.1016/j.nefroe.2024.04.004
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Estimation of pure quantum states in high dimension at the limit of quantum accuracy through complex optimization and statistical inference.

Zambrano, Leonardo / Pereira, Luciano / Niklitschek, Sebastián / Delgado, Aldo

Scientific reports

2020 Volume 10, Issue 1, Page(s) 12781

Abstract: Quantum tomography has become a key tool for the assessment of quantum states, processes, and devices. This drives the search for tomographic methods that achieve greater accuracy. In the case of mixed states of a single 2-dimensional quantum system ... ...

Abstract	Quantum tomography has become a key tool for the assessment of quantum states, processes, and devices. This drives the search for tomographic methods that achieve greater accuracy. In the case of mixed states of a single 2-dimensional quantum system adaptive methods have been recently introduced that achieve the theoretical accuracy limit deduced by Hayashi and Gill and Massar. However, accurate estimation of higher-dimensional quantum states remains poorly understood. This is mainly due to the existence of incompatible observables, which makes multiparameter estimation difficult. Here we present an adaptive tomographic method and show through numerical simulations that, after a few iterations, it is asymptotically approaching the fundamental Gill-Massar lower bound for the estimation accuracy of pure quantum states in high dimension. The method is based on a combination of stochastic optimization on the field of the complex numbers and statistical inference, exceeds the accuracy of any mixed-state tomographic method, and can be demonstrated with current experimental capabilities. The proposed method may lead to new developments in quantum metrology.
Language	English
Publishing date	2020-07-29
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-020-69646-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Enophthalmos in silent brain syndrome.

Lando, Leonardo / Paiva, Marina O S / Pereira, Luciano S

Indian journal of ophthalmology

2020 Volume 68, Issue 11, Page(s) 2536

MeSH term(s)	Brain ; Enophthalmos/diagnosis ; Enophthalmos/etiology ; Humans ; Maxillary Sinus ; Paranasal Sinus Diseases
Language	English
Publishing date	2020-10-23
Publishing country	India
Document type	Journal Article
ZDB-ID	187392-1
ISSN	1998-3689 ; 0301-4738
ISSN (online)	1998-3689
ISSN	0301-4738
DOI	10.4103/ijo.IJO_897_20
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 329: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular ab Jg. 2022: Lesesaal (EG)
Zs.MO 598: Show issues

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

To top

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito