Results 41 to 50 of about 10,565 (202)

Occult B infection in the Brazilian northeastern region: a preliminary report

open access: yesBrazilian Journal of Infectious Diseases
A sentinel study on viral hepatitis is currently being carried out in the village of Cavunge in a semiarid rural region of the state of Bahia, northeastern Brazil. This study has identified individuals in whom anti-HBc IgG was the only serological marker
Delvone Almeida   +6 more
doaj   +1 more source

Provider-initiated testing and counselling programmes in sub-Saharan Africa: a systematic review of their operational implementation. [PDF]

open access: yes, 2013
OBJECTIVE: The routine offer of an HIV test during patient-provider encounters is gaining momentum within HIV treatment and prevention programmes. This review examined the operational implementation of provider-initiated testing and counselling (PITC ...
Ferguson, Laura   +4 more
core   +1 more source

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

open access: yesAdvanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li   +7 more
wiley   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

Ribozymes for RNA‐Catalyzed RNA Methylation and Labeling

open access: yesAngewandte Chemie International Edition, EarlyView.
Ribozymes are powerful tools for site‐specific RNA modification. Their activities range from installing tags and fluorophores to generating natural RNA methylations, making them valuable tools to uncover the many functions that RNA plays in nature.
Carolin P. M. Scheitl   +1 more
wiley   +1 more source

Low Energy Theorems of Hidden Local Symmetries

open access: yes, 1993
We prove to all orders of the loop expansion the low energy theorems of hidden local symmetries in four-dimensional nonlinear sigma models based on the coset space $G/H$, with $G$ and $H$ being arbitrary compact groups.
Harada, Masayasu   +2 more
core   +1 more source

Targeting neutrophil extracellular traps in metabolic and immune niche: Nanomaterials for diabetes tissue regeneration

open access: yesBMEMat, EarlyView.
The effects of NETs on regeneration of various diabetic tissues, and strategies targeting NETs for diabetes tissue regeneration. In the diabetic environment, NETs undergo complex metabolic and immune reprogramming, leading to dynamic changes in antibacterial and proinflammatory functions, and affecting regeneration of multiple systemic tissues.
Xinyi Jiang   +6 more
wiley   +1 more source

Evaluation of the effect of flaxseed oil and docosahexaenoic acid on hematological and oxidative stress markers of female Wistar rats with 7, 12‐dimethylbenz[a]anthracene‐induced breast cancer

open access: yesFood Biomacromolecules, EarlyView.
DHA and flaxseed oil reduce tumor sizes, superoxide dismutase activity, malondialdehyde level and increase white blood cells, platelets, serum protein level, glutathione peroxidase, nitric oxide, catalase activities in DMBA‐induced breast cancer in Wistar rats compared to the negative control.
Julia Ndifor Mebami   +5 more
wiley   +1 more source

A Novel Type of Fluorescent Chlorophyll Catabolites Hypermodified by Lipophilic Chloroplast Membrane Components

open access: yesHelvetica Chimica Acta, EarlyView.
Breakdown of chlorophyll (Chl) is a fundamental biological phenomenon. In de‐greening banana leaves, Chl is transformed into colorless “fluorescent” Chl‐catabolites (FCCs) that cause the leaves to luminesce blue. Hypothesis‐driven search for apolar banana‐FCCs, and structure elucidation, have revealed a striking first link between lipid metabolism and ...
Clemens Vergeiner, Bernhard Kräutler
wiley   +1 more source

Epidemiology of hepatitis B virus infection in people living in poverty in the central-west region of Brazil

open access: yesBMC Public Health, 2019
Background People living in poverty (PLP) are highly vulnerable to hepatitis B virus (HBV) infection. This study aimed to investigate the epidemiology of HBV infection in PLP in the metropolitan region of Goiânia, Goiás State, in the Central-West Region ...
Lara Cristina da Cunha Guimarães   +12 more
doaj   +1 more source

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