abstract：Background:Saber-toothed mammals, now all extinct, were cats or "cat-like" forms with enlarged, blade-like upper canines, proposed as specialists in taking large prey. During the last 66 Ma, the saber-tooth ecomorph has evolved convergently at least in five different mammalian lineages across both marsupials and placen...

journal_title：PeerJ

authors： M Janis C,Figueirido B,DeSantis L,Lautenschlager S

更新日期：2020-06-26 00:00:00

abstract：Background:Stoichiometric relations drive powerful constraints in several fundamental ecosystem processes. However, limited studies have been conducted on the ecological stoichiometry of plants after the change of community composition induced by Stellera chamaejasme removal in alpine grassland in the Qinghai-Tibetan P...

journal_title：PeerJ

authors： Song M,Wang Y,Bao G,Wang H,Yin Y,Li X,Zhang C

更新日期：2020-06-23 00:00:00

abstract：Background:Quantifying lower-limb load and asymmetry during team sport match-play may be important for injury prevention and understanding performance. However, current analysis methods of lower-limb symmetry during match-play employ wearable microtechnology that may not be best suited to the task. A popular microtechn...

journal_title：PeerJ

authors： Glassbrook DJ,Fuller JT,Alderson JA,Doyle TLA

更新日期：2020-06-23 00:00:00

abstract：:Monkeypox (MPX) is a zoonotic disease similar to smallpox. Its fatality rate is about 11% and it is endemic to the Central and West African countries. In this paper, we analyze a compartmental model of MPX dynamics. Our goal is to see whether MPX can be controlled and eradicated by voluntary vaccinations. We show that...

journal_title：PeerJ

authors： Bankuru SV,Kossol S,Hou W,Mahmoudi P,Rychtář J,Taylor D

更新日期：2020-06-22 00:00:00

abstract：:Heterotrophic plants-plants that have lost the ability to photosynthesize-are characterized by a number of changes at all levels of organization. Heterotrophic plants are divided into two large categories-parasitic and mycoheterotrophic (MHT). The question of to what extent such changes are similar in these two catego...

journal_title：PeerJ

authors： Shtratnikova VY,Schelkunov MI,Penin AA,Logacheva MD

更新日期：2020-06-19 00:00:00

abstract：Purpose:To explore whether unilateral relapse of Bechet's disease-associated uveitis (BDU) causes differences in the tear proteome between the diseased and the contralateral quiescent eye and potential tear biomarkers for uveitis recurrence and disease monitoring. Method:To minimize interindividual variations, bilater...

journal_title：PeerJ

authors： Liang A,Qin W,Zhang M,Gao F,Zhao C,Gao Y

更新日期：2020-06-19 00:00:00

abstract：Background:To reduce bird fatalities from millions of window collisions each year in North America, it is important to understand how design and landscape elements relate to collision risk. The current study extends prior research that found that buildings near ornamental pear trees (Prunus calleryana) and buildings wi...

journal_title：PeerJ

authors： Brown BB,Hunter L,Santos S

更新日期：2020-06-19 00:00:00

abstract：:In highly biodiverse systems, such as coral reefs, prey species are faced with predatory threats from numerous species. Recognition of predators can be innate, or learned, and can help increase the chance of survival. Research suggests that parental exposure to increased predatory threats can affect the development, b...

journal_title：PeerJ

authors： Atherton JA,McCormick MI

更新日期：2020-06-18 00:00:00

abstract：:The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum. They have been documented in Middle to early Late Devonian deposits of Laurussia and th...

journal_title：PeerJ

authors： Champreux A,Meyer-Berthaud B,Decombeix AL

更新日期：2020-06-16 00:00:00

abstract：:A previous study found that use of the traditional halibut hook (čibu.d) of the Makah Tribe in present day recreational Pacific halibut (Hippoglossus stenolepis) fisheries significantly reduced bycatch compared to paired 8/0 circle hooks. The study also found that the čibu.d had a significantly reduced catch of halibu...

journal_title：PeerJ

authors： Petersen JR,Scordino JJ,Svec CI,Buttram RH,Gonzalez MR,Scordino J

更新日期：2020-06-12 00:00:00

abstract：:Environmental DNA (eDNA) is an emerging tool for monitoring invasive and imperiled species, particularly at low densities. However, the factors that control eDNA production, transport, and persistence in aquatic systems remain poorly understood. For example, the extent to which carcasses produce detectable eDNA is unk...

journal_title：PeerJ

authors： Curtis AN,Larson ER

更新日期：2020-06-11 00:00:00

abstract：:P-glycoprotein (P-gp) is one of the highly expressed cancer cell efflux transporters that cause the failure of chemotherapy. To reverse P-gp induced multidrug resistance, we employed a flaxseed-derived lignan; secoisolariciresinol (SECO) that acts as an inhibitor of breast cancer resistance protein; another efflux tra...

journal_title：PeerJ

authors： Morsy MA,El-Sheikh AAK,Ibrahim ARN,Venugopala KN,Kandeel M

更新日期：2020-06-10 00:00:00

abstract：:Since 2014, Stony Coral Tissue Loss Disease (SCTLD) has led to mass mortality of the majority of hard coral species on the Florida Reef Tract. Following the successful treatment of SCTLD lesions on laboratory corals using water dosed with antibiotics, two topical pastes were developed as vehicles to directly apply ant...

journal_title：PeerJ

authors： Neely KL,Macaulay KA,Hower EK,Dobler MA

更新日期：2020-06-09 00:00:00

abstract：Background:Type 2 diabetes mellitus (T2DM) had been reported to be associated with tendinopathy. However, the underlying mechanisms of diabetic tendinopathy still remain largely to be discovered. The purpose of this study was to develop insulin resistance (IR) model on primary human tenocytes (hTeno) culture with tumou...

journal_title：PeerJ

authors： Tan HY,Tan SL,Teo SH,Roebuck MM,Frostick SP,Kamarul T

更新日期：2020-06-08 00:00:00

abstract：Background:Plant reproduction is influenced by the net outcome of plant-herbivore and plant-pollinator interactions. While both herbivore impacts and pollinator impacts on plant reproduction have been widely studied, few studies examine them in concert. Methodology:Here, we review the contemporary literature that exam...

journal_title：PeerJ

authors： Haas SM,Lortie CJ

更新日期：2020-06-08 00:00:00

abstract：:This article aimed to give the visibility of Latin American researchers' contributions to the comprehension of COVID-19; our method was a literature review. Currently, the world is facing a health and socioeconomic crisis caused by the novel coronavirus, SARS-CoV-2, and its disease COVID-19. Therefore, in less than 4 ...

journal_title：PeerJ

authors： Fiesco-Sepúlveda KY,Serrano-Bermúdez LM

更新日期：2020-06-04 00:00:00

abstract：:In this study we analysed the impact of water regime and soil nutrients on the clonal diversity and genetic variation of the sedge Carex nigra in a central alpine fen. For our analysis, we established 16 study plots randomly distributed over the fen. We determined the exact elevation of each plot as an indicator for t...

journal_title：PeerJ

authors： Reisch C,Meier S,Schmid C,Bartelheimer M

更新日期：2020-06-03 00:00:00

abstract：Background:Carbon (C), nitrogen (N) and phosphorus (P) stoichiometric ratios are important indicators of ecosystem function and productivity. However, few studies have assessed the nutrient relationship between plant, litter and soil, and the nutrient stock in different secondary mixed forest types. Methods:We investi...

journal_title：PeerJ

authors： Pang Y,Tian J,Zhao X,Chao Z,Wang Y,Zhang X,Wang D

更新日期：2020-06-03 00:00:00

abstract：:Divergences between agricultural management can result in different types of biological interactions between plants and microorganisms, which may affect food quality and productivity. Conventional practices are well-established in the agroindustry as very efficient and lucrative; however, the increasing demand for sus...

journal_title：PeerJ

authors： Carvalho CR,Dias AC,Homma SK,Cardoso EJ

更新日期：2020-06-02 00:00:00

abstract：Background:The fall webworm, Hyphantria cunea Drury (Lepidoptera: Erebidae), is a widespread invasive species. It is native to North America, ranging from southern Canada to northern Mexico. During and after the 1940s, this pest was accidentally introduced in many parts of Europe and Asia. It has now spread to more tha...

journal_title：PeerJ

authors： Mikami OK,Takamatsu M,Yarita R

更新日期：2020-06-02 00:00:00

abstract：:The impacts of sea-level rise (SLR) are likely to be the greatest for ecosystems that exist at the land-sea interface, where small changes in sea-level could result in drastic changes in habitat availability. Rocky intertidal ecosystems possess a number of characteristics which make them highly vulnerable to changes i...

journal_title：PeerJ

authors： Kaplanis NJ,Edwards CB,Eynaud Y,Smith JE

更新日期：2020-05-29 00:00:00

abstract：Background:Influenza A (H5N1) virus is a global concern with potential as a pandemic threat. High sequence variability of influenza A viruses is a major challenge for effective vaccine design. A continuing goal towards this is a greater understanding of influenza A (H5N1) proteome sequence diversity in the context of t...

journal_title：PeerJ

authors： Abd Raman HS,Tan S,August JT,Khan AM

更新日期：2020-05-27 00:00:00

abstract：:Hypocotyl elongation is a critical sign of seed germination and seedling growth, and it is regulated by multi-environmental factors. Light, temperature, and water potential are the major environmental stimuli, and their regulatory mechanism on hypocotyl growth has been extensively studied at molecular level. However, ...

journal_title：PeerJ

authors： Wang H,Shang Q

更新日期：2020-05-26 00:00:00

abstract：Background:In arid environments, plant primary productivity is generally low and highly variable both spatially and temporally. Resources are not evenly distributed in space and time (e.g., soil nutrients, water), and depend on global (El Niño/ Southern Oscillation) and local climate parameters. The launch of the Senti...

journal_title：PeerJ

authors： Funghi C,Heim RHJ,Schuett W,Griffith SC,Oldeland J

更新日期：2020-05-26 00:00:00

abstract：:Vitiligo is a chronic asymptomatic disorder affecting melanocytes from the basal layer of the epidermis which leads to a patchy loss of skin color. Even though it is one of the neglected disease conditions, people suffering from vitiligo are more prone to psychological disorders. As of now, various studies have been d...

journal_title：PeerJ

authors： Srivastava P,Choudhury A,Talwar M,Mohanty S,Narad P,Sengupta A

更新日期：2020-05-21 00:00:00

abstract：Background:Anaplastic thyroid carcinoma (ATC) is a rare malignant tumor with a poor prognosis. However, there is no useful clinical prognostic predictive tool for ATC so far. Our study identified risk factors for survival of ATC and created a reliable nomogram to predict overall survival (OS) and cancer-specific surviv...

journal_title：PeerJ

authors： Gui W,Zhu W,Lu W,Shang C,Zheng F,Lin X,Li H

更新日期：2020-05-21 00:00:00

abstract：Background:Little is known regarding the toxic and therapeutic doses of amygdalin. Treatment regimens and schedules can vary between humans and animal models, and there have been reports of cyanide toxicity due to amygdalin use. Objective:The aim of this study was to evaluate the effect of different doses of amygdalin...

journal_title：PeerJ

authors： Albogami S,Hassan A,Ahmed N,Alnefaie A,Alattas A,Alquthami L,Alharbi A

更新日期：2020-05-21 00:00:00

abstract：Introduction:A high body fat coupled with low cardiopulmonary fitness and an increase in oxidative stress has been connoted as contributing factors in developing cardiovascular comorbidities. This study aimed to investigate the correlation between antioxidants and oxidative stress status with cardiopulmonary responses ...

journal_title：PeerJ

authors： Adenan DM,Jaafar Z,Jayapalan JJ,Abdul Aziz A

更新日期：2020-05-19 00:00:00

abstract：Introduction:Metabolomics has emerged as a valuable tool to discover novel biomarkers and study the pathophysiology of diabetic nephropathy (DN). However, the effect of postoperative acute kidney injury (AKI) on diabetes mellitus (DM) to chronic DN progression has not been evaluated from the perspective of metabolomics...

journal_title：PeerJ

authors： Wang J,Yan W,Zhou X,Liu Y,Tang C,Peng Y,Liu H,Sun L,Xiao L,He L

更新日期：2020-05-14 00:00:00

abstract：:We point out complications inherent in biodiversity inventory metrics when applied to large-scale datasets. The number of units of inventory effort (e.g., days of inventory effort) in which a species is detected saturates, such that crucial numbers of detections of rare species approach zero. Any rare errors can then ...

journal_title：PeerJ

authors： Khalighifar A,Jiménez L,Nuñez-Penichet C,Freeman B,Ingenloff K,Jiménez-García D,Peterson T

更新日期：2020-05-13 00:00:00

abstract：:The ability to accurately identify and label emotions in the self and others is crucial for successful social interactions and good mental health. In the current study we tested the longitudinal relationship between early language skills and recognition of facial and vocal emotion cues in a representative UK populatio...

journal_title：PeerJ

authors： Griffiths S,Goh SKY,Norbury CF,the SCALES team.

更新日期：2020-05-12 00:00:00

abstract：Background:The effect of fat tissue on a developing individual is fundamentally different from the effect on an adult. Several changes caused by obesity during sexual maturation have an irreversible and severe negative effect (lower fertility, reduced final height, type 2 diabetes mellitus) even for those who have subs...

journal_title：PeerJ

authors： Novak JM,Bruzek J,Zamrazilova H,Vankova M,Hill M,Sedlak P

更新日期：2020-05-11 00:00:00

abstract：:Purple Broccoli (Brassica oleracea L. var italica) attracts growing attention as a functional food. Its purple coloration is due to high anthocyanin amounts. Light represents a critical parameter affecting anthocyanins biosynthesis. In this study, 'Purple Broccoli', a light-responding pigmentation cultivar, was assess...

journal_title：PeerJ

authors： Liu C,Yao X,Li G,Huang L,Xie Z

更新日期：2020-05-05 00:00:00

abstract：:The Yazoo Darter, Etheostoma raneyi (Percidae), is an imperiled freshwater fish species endemic to tributaries of the Yocona and Little Tallahatchie rivers of the upper Yazoo River basin, in northern Mississippi, USA. The two populations are allopatric, isolated by unsuitable lowland habitat between the two river drai...

journal_title：PeerJ

authors： Sterling KA,Nielsen SV,Brown AJ,Warren ML Jr,Noonan BP

更新日期：2020-05-04 00:00:00

abstract：Purpose:Pterygium results from a variety of biological pathways that are involved in the formation of ocular surface diseases. However, the exact pathogenesis of pterygium is still unclear. Our study focused on gene expression profiles to better understand the potential mechanisms of pterygium. Methods:RNA sequencing ...

journal_title：PeerJ

authors： Chen Y,Wang H,Jiang Y,Zhang X,Wang Q

更新日期：2020-05-04 00:00:00

abstract：Background:B-mode ultrasound is one of the most commonly used imaging techniques for evaluating thyroid nodules due to its noninvasive property and excellent performance in terms of discriminating between benign and malignant nodules. However, the accuracy of differential diagnosis strongly depends on the experience of...

journal_title：PeerJ

authors： Wang J,He X,Ma L,Li M,Sun L,Jiang J,Zhou Q

更新日期：2020-05-04 00:00:00

abstract：:Development of mobile sensors brings new opportunities to medical research. In particular, mobile electroencephalography (EEG) devices can be potentially used in low cost screening for epilepsy and other neurological and psychiatric disorders. The necessary condition for such applications is thoughtful validation in t...

journal_title：PeerJ

authors： Kutafina E,Brenner A,Titgemeyer Y,Surges R,Jonas S

更新日期：2020-05-01 00:00:00

abstract：Background:This study evaluates the generalizability of an eight-station progress clinical skills examination and assesses the growth in performance for six clinical skills domains among first- and second-year medical students over four time points during the academic year. Methods:We conducted a generalizability stud...

journal_title：PeerJ

authors： Laird-Fick HS,Chang C,Wang L,Parker C,Malinowski R,Emery M,Solomon DJ

更新日期：2020-05-01 00:00:00

abstract：Background:As key negative regulators of gene expression, microRNAs (miRNAs) play an important role in the onset and progression of hepatocellular carcinoma (HCC). This study aimed to identify the miRNAs involved in HCC carcinogenesis and their regulated genes. Methods:The Gene Expression Omnibus (GEO) dataset (GSE108...

journal_title：PeerJ

authors： Liu Y,Cao Y,Cai W,Wu L,Zhao P,Liu XG

更新日期：2020-04-29 00:00:00

abstract：:Soil sickness is the progressive loss of soil quality due to continuous monocropping. The bacterial populations are critical to sustaining agroecosystems, but their responses to long-term peanut monocropping have not been determined. In this study, based on a previously constructed gradient of continuous monocropped p...

journal_title：PeerJ

authors： Chen M,Liu H,Yu S,Wang M,Pan L,Chen N,Wang T,Chi X,Du B

更新日期：2020-04-28 00:00:00