Read by QxMD icon Read


Masayuki Morita, Hikaru Nagaoka, Edward H Ntege, Bernard N Kanoi, Daisuke Ito, Takahiro Nakata, Ji-Won Lee, Kazuaki Tokunaga, Tadahiro Iimura, Motomi Torii, Takafumi Tsuboi, Eizo Takashima
Upon invasion, Plasmodium falciparum exports hundreds of proteins across its surrounding parasitophorous vacuole membrane (PVM) to remodel the infected erythrocyte. Although this phenomenon is crucial for the parasite growth and virulence, elucidation of precise steps in the export pathway is still required. A translocon protein complex, PTEX, is the only known pathway that mediates passage of exported proteins across the PVM. P. falciparum Parasitophorous Vacuolar protein 1 (PfPV1), a previously reported parasitophorous vacuole (PV) protein, is considered essential for parasite growth...
February 27, 2018: Scientific Reports
Ronaldo A Pereira-Junior, Carla Huarte-Bonnet, Flávia R S Paixão, Donald W Roberts, Christian Luz, Nicolás Pedrini, Éverton K K Fernandes
AIMS: The effect of nutritional supplementation of two Metarhizium species with riboflavin (Rb) during production of conidia was (a) evaluated on conidial tolerance (based on germination) to UV-B radiation and (b) on conidial expression following UV-B irradiation, of enzymes known to be active in photoreactivation, viz., photolyase (Phr), laccase (Lcc) and polyketide synthase (Pks). METHODS AND RESULTS: Metarhizium acridum (ARSEF 324) and Metarhizium robertsii (ARSEF 2575) were grown either on (a) potato dextrose agar medium (PDA), (b) PDA supplemented with 1% yeast extract (PDAY), (c) PDA supplemented with Rb (PDA+Rb), or (d) PDAY supplemented with Rb (PDAY+Rb)...
February 23, 2018: Journal of Applied Microbiology
Misao Mizuno, Ayumi Nakajima, Hideki Kandori, Yasuhisa Mizutani
We revealed the chloride ion pumping mechanism in halorhodopsin from Natronobacterium pharaonis (pHR) by exploring sequential structural changes in the retinal chromophore during its photocycle using time-resolved resonance Raman (RR) spectroscopy on the nanosecond to millisecond timescales. A series of RR spectra of the retinal chromophore in the unphotolyzed state and of the three intermediates of pHR were obtained. Using singular value decomposition analysis of the C=C and C-C stretch bands in the time-resolved RR spectra, we identified the spectra of the K, L, and N intermediates...
February 20, 2018: Journal of Physical Chemistry. A
Ryuma Sato, Ryuhei Harada, Yasuteru Shigeta
Photolyases (PHRs) and cryptochromes (CRYs) belong to the same family known as blue-light photoreceptors. Although their amino acid sequences and corresponding structures are similar to each other, they exert different functions. PHRs function as an enzyme to repair UV-induced deoxyribonucleic acid (DNA) lesions such as a cyclobutane pyrimidine dimer (CPD) and a (6-4) photoproduct ((6-4)pp), whereas CRYs are a circadian photoreceptor in plants and animals and at the same time they control the photoperiodic induction of flowering in plants...
2018: Biophysics and Physicobiology
Yunjian Xu, Fang Liu, Guomin Han, Beijiu Cheng
The present study identified several important candidate Pi regulation genes of maize and provides a better understanding on the generation of PHR genes in gramineous plants. Plants have evolved adaptive responses to cope with low phosphate (Pi) soils. The previous studies have indicated that phosphate starvation response (PHR) genes play central roles in regulating plant Pi starvation responses. However, the investigation of PHR family in gramineous plants is limited. In this study, we identified 64 PHR genes in four gramineous plants, including maize, rice, sorghum, and brachypodium, and conducted systematical analyses on phylogenetic, structure, collinearity, and expression pattern of these PHR genes...
February 2, 2018: Plant Cell Reports
Kyung Jae Lee, Sangyeop Lee, Seul-Ki Bac, Seonghoon Choi, Hakjoon Lee, Jihoon Chang, Suho Choi, Phunvira Chongthanaphisut, Sanghoon Lee, X Liu, M Dobrowolska, J K Furdyna
Magnetization reversal in a GaMnAs trilayer system consisting of two GaMnAs layers separated by a Be-doped GaAs spacer was investigated by magnetotransport measurements. The rotation of magnetization in the two GaMnAs layers is observed as two abrupt independent transitions in planar Hall resistance (PHR). Interestingly, one GaMnAs layer manifests a positive change in PHR, while the other layer shows a negative change for the same rotation of magnetization. Such opposite behavior of the two layers indicates that anisotropic magnetoresistance (AMR) has opposite signs in the two GaMnAs layers...
February 2, 2018: Scientific Reports
Charic D Farinango, Juan S Benavides, Jesús D Cerón, Diego M López, Rosa E Álvarez
Background: Previous studies have demonstrated the effectiveness of information and communication technologies to support healthy lifestyle interventions. In particular, personal health record systems (PHR-Ss) empower self-care, essential to support lifestyle changes. Approaches such as the user-centered design (UCD), which is already a standard within the software industry (ISO 9241-210:2010), provide specifications and guidelines to guarantee user acceptance and quality of eHealth systems...
2018: Journal of Multidisciplinary Healthcare
Laura Popolo, Genny Degani, Carlo Camilloni, William A Fonzi
Candida albicans is an opportunistic microorganism that can become a pathogen causing mild superficial mycosis or more severe invasive infections that can be life-threatening for debilitated patients. In the etiology of invasive infections, key factors are the adaptability of C. albicans to the different niches of the human body and the transition from a yeast form to hypha. Hyphal morphology confers high adhesiveness to the host cells, as well as the ability to penetrate into organs. The cell wall plays a crucial role in the morphological changes C...
October 29, 2017: Journal of Fungi (Basel, Switzerland)
Ilana Graetz, Jie Huang, Richard J Brand, John Hsu, Cyrus K Yamin, Mary E Reed
OBJECTIVES: Some patients lack regular computer access and experience a digital divide that causes them to miss internet-based health innovations. The diffusion of smartphones has increased internet access across the socioeconomic spectrum, and increasing the channels through which patients can access their personal health records (PHRs) could help bridge the divide in PHR use. We examined PHR use through a computer-based Web browser or mobile device. STUDY DESIGN: Cross-sectional historical cohort analysis...
January 2018: American Journal of Managed Care
Chenyang Zhang, Jincheng Wang
A series of flame-retardant nanocomposites were established based on compounding of natural rubber (NR) and dendrimer modified flame-retardant organic montmorillonite (FR-DOMt). The merits of these nanocomposites were focused on their better mechanical and flame-retardant properties. X-ray diffractometer (XRD) together with scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis revealed that exfoliation, intercalation, or aggregation status in the NRmatrix can be achieved by addition of different amounts of FR-DOMt...
December 28, 2017: Materials
Shuqu Zhang, Xia Liu, Chengbin Liu, Shenglian Luo, Longlu Wang, Tao Cai, Yunxiong Zeng, Jili Yuan, Wanyue Dong, Yong Pei, Yutang Liu
It is highly demanded to steer the charge flow in photocatalysts for efficient photocatalytic hydrogen reactions (PHRs). In this study, we developed a smart strategy to position MoS2 quantum dots (QDs) at the S vacancies on Zn facet in monolayered ZnIn2S4 (Vs-M-ZnIn2S4) to craft two-dimensional (2D) atomic-level heterostructure (MoS2QDs@Vs-M-ZnIn2S4). The electronic structure calculations indicated that the positive charge density of Zn atom around sulfur-vacancy (Vs) was more intensive than other Zn atoms...
December 20, 2017: ACS Nano
Oliver Crawley, Andrew C Giles, Muriel Desbois, Sudhanva Kashyap, Rayna Birnbaum, Brock Grill
The Pam/Highwire/RPM-1 (PHR) proteins are conserved intracellular signaling hubs that regulate synapse formation and axon termination. The C. elegans PHR protein, called RPM-1, acts as a ubiquitin ligase to inhibit the DLK-1 and MLK-1 MAP kinase pathways. We have identified several kinases that are likely to form a new MAP kinase pathway that suppresses synapse formation defects, but not axon termination defects, in the mechanosensory neurons of rpm-1 mutants. This pathway includes: MIG-15 (MAP4K), NSY-1 (MAP3K), JKK-1 (MAP2K) and JNK-1 (MAPK)...
December 2017: PLoS Genetics
Shoji Suzuki, Norio Kurosawa
Multiple gene knockout systems developed in the thermoacidophilic crenarchaeon Sulfolobus acidocaldarius are powerful genetic tools. However, plasmid construction typically requires several steps. Alternatively, PCR tailing for high-throughput gene disruption was also developed in S. acidocaldarius , but repeated gene knockout based on PCR tailing has been limited due to lack of a genetic marker system. In this study, we demonstrated efficient homologous recombination frequency (2.8 × 104  ± 6.9 × 103 colonies/ μ g DNA) by optimizing the transformation conditions...
2017: Archaea: An International Microbiological Journal
Hasin Feroz, HyeYoung Kwon, Jing Peng, Hyeonji Oh, Bryan Ferlez, Carol S Baker, John H Golbeck, Guillermo C Bazan, Andrew L Zydney, Manish Kumar
Membrane proteins (MPs), despite being critically important drug targets for the pharmaceutical industry, are difficult to study due to challenges in obtaining high yields of functional protein. Most current extraction efforts use specialized non-ionic detergents to solubilize and stabilize MPs, with MPs being concentrated by ultrafiltration (UF). However, many detergents are retained during the UF step, which can destabilize MPs and/or interfere with their characterization. Here, we studied the influence of detergent selection on the extraction and UF-based concentration of biomedically-relevant MPs, the light-driven sodium and chloride transporters, KR2 and halorhodopsin (pHR) which are also model proteins for more complex mammalian rhodopsins...
March 12, 2018: Analyst
Borim Ryu, Nari Kim, Eunyoung Heo, Sooyoung Yoo, Keehyuck Lee, Hee Hwang, Jeong-Whun Kim, Yoojung Kim, Joongseek Lee, Se Young Jung
BACKGROUND: Personal health record (PHR)-based health care management systems can improve patient engagement and data-driven medical diagnosis in a clinical setting. OBJECTIVE: The purpose of this study was (1) to demonstrate the development of an electronic health record (EHR)-tethered PHR app named MyHealthKeeper, which can retrieve data from a wearable device and deliver these data to a hospital EHR system, and (2) to study the effectiveness of a PHR data-driven clinical intervention with clinical trial results...
December 7, 2017: Journal of Medical Internet Research
Lea Schroeder, Sabine Oldemeyer, Tilman Kottke
Plant cryptochromes are light receptors in land plants and algae with very diverse functions such as circadian timing and lifecycle progression. The receptor consists of a photolyase homology region (PHR) binding the flavin chromophore and a C-terminal extension (CCT) responsible for signaling. The reputed signaling state, the flavin neutral radical, is formed by a femtosecond electron transfer and microsecond proton transfer to the excited, oxidized flavin. Subsequently, a 500 μs loss of β-sheet structure ∼25 Å away from flavin was resolved and suggested to be part of the signal conduction to the CCT...
January 11, 2018: Journal of Physical Chemistry. A
Elisabeth Dorant, Theresia Krieger
Family caregivers are the backbone of the long-term care support system within the home environment. Comprehensive caregiver support programs require collaboration and coordination within the system. A new public health concept, Vade Mecum, aims to harmonize and professionalize family caregiver support initiatives in geriatric care settings in the Euregion Maas-Rhine. Exploration of the new concept recently started in Germany to gain in-depth insight into current support and the needs of the geriatric care team and family caregivers...
November 28, 2017: International Journal of Environmental Research and Public Health
David Ribes, Hélène E L Hachem, Lucie Oberic, François Vergez, Audrey Delas, Julie Belliere, Caroline Protin, Nassim Kamar, Inès Ferrandiz, Suzanne Tavitian, Camille Laurent, Antoine Huart, Dominique Chauveau, Loïc Ysebaert, Stanislas Faguer
Treatment of indolent B-cell non-Hodgkin lymphomas (iNHL) of renal significance is challenging given the need for deep and prolonged hematological response to restore and control renal function overtime, yet to be balanced with the risk of adverse drug-related events. This prospective single-center study included 20 patients with iNHL of renal significance (tubulointerstitial presentation [n = 8], glomerulopathy with or without monoclonal Ig deposits [n = 12]) who received a steroid-sparing regimen of rituximab plus bendamustine (BR), with either no or <1 month of steroid intake (as a first line therapy in 80%)...
March 2018: American Journal of Hematology
María Jesús Garcia-Campo, Luis Quiles-Carrillo, Jaime Masia, Miguel Jorge Reig-Pérez, Nestor Montanes, Rafael Balart
Ternary blends of poly(lactic acid) (PLA), poly(3-hydroxybutyrate) (PHB) and poly(ε-caprolactone) (PCL) with a constant weight percentage of 60%, 10% and 30% respectively were compatibilized with soybean oil derivatives epoxidized soybean oil (ESO), maleinized soybean oil (MSO) and acrylated epoxidized soybean oil (AESO). The potential compatibilization effects of the soybean oil-derivatives was characterized in terms of mechanical, thermal and thermomechanical properties. The effects on morphology were studied by field emission scanning electron microscopy (FESEM)...
November 22, 2017: Materials
Sonia Menon, Rodolfo Rossi, Stacy G Harmon, Hillary Mabeya, Steven Callens
Women living with HIV in Africa are at increased risk to be co-infected with Human Papilloma Virus (HPV), persistent high risk (HR) HPV infection and bacterial vaginosis (BV), which compounds HPV persistence, thereby increasing the risk for cervical dysplasia. New guidance from WHO in 2014 advocating for a "screen and treat" approach in resource poor settings is becoming a more widely recommended screening tool for cervical cancer prevention programs in such contexts. This review article summarizes the risk factors to be considered when designing a primary and secondary cervical prevention program in a post-vaccination era for HIV-infected women in Kenya...
November 2017: Gynecologic Oncology Reports
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"