scholarly journals Optical glucose sensing using ethanolamine–polyborate complexes

2018 ◽  
Vol 6 (5) ◽  
pp. 816-823 ◽  
Author(s):  
C. Toncelli ◽  
R. Innocenti Malini ◽  
D. Jankowska ◽  
F. Spano ◽  
H. Cölfen ◽  
...  
Keyword(s):  
Glucose Sensor ◽  
Glucose Sensing ◽  
Emission Mechanism ◽  
Aggregation Induced Emission ◽  
Amine Complexes ◽  
Optical Glucose Sensor

An optical glucose sensor based on polyborate–amine complexes with an aggregation-induced emission mechanism.

scholarly journals Waste eggshell membrane-templated synthesis of functional Cu2+–Cu+/biochar for an ultrasensitive electrochemical enzyme-free glucose sensor

RSC Advances ◽  
2021 ◽  
Vol 11 (31) ◽  
pp. 18994-18999
Author(s):  
Linzhi Li ◽  
Tianzeng Huang ◽  
Saijun He ◽  
Xing Liu ◽  
Qi Chen ◽  
...  
Keyword(s):  
Glucose Sensor ◽  
Glucose Sensing ◽  
Fabrication Process ◽  
Eggshell Membrane ◽  
Templated Synthesis ◽  
Free Glucose

The fabrication process of the nonenzyme glucose sensing based Cu2+–Cu+/biochar.

A Miniature Optical Glucose Sensor Based on Affinity Binding

1984 ◽  
Vol 2 (10) ◽  
pp. 885-890 ◽  
Author(s):  
Sohrab Mansouri ◽  
Jerome S. Schultz
Keyword(s):  
Glucose Sensor ◽  
Affinity Binding ◽  
Optical Glucose Sensor

scholarly journals Two glucose sensing/signaling pathways stimulate glucose-induced inactivation of maltose permease in Saccharomyces.

1997 ◽  
Vol 8 (7) ◽  
pp. 1293-1304 ◽  
Author(s):  
H Jiang ◽  
I Medintz ◽  
C A Michels
Keyword(s):  
Signaling Pathways ◽  
Glucose Transport ◽  
Glucose Sensor ◽  
Constitutive Expression ◽  
Glucose Sensing ◽  
Regulation Of Transcription ◽  
Carbohydrate Utilization ◽  
Maltose Permease ◽  
Glucose Levels ◽  
Dependent Signal

Glucose is a global metabolic regulator in Saccharomyces. It controls the expression of many genes involved in carbohydrate utilization at the level of transcription, and it induces the inactivation of several enzymes by a posttranslational mechanism. SNF3, RGT2, GRR1 and RGT1 are known to be involved in glucose regulation of transcription. We tested the roles of these genes in glucose-induced inactivation of maltose permease. Our results suggest that at least two signaling pathways are used to monitor glucose levels. One pathway requires glucose sensor transcript and the second pathway is independent of glucose transport. Rgt2p, which along with Snf3p monitors extracellular glucose levels, appears to be the glucose sensor for the glucose-transport-independent pathway. Transmission of the Rgt2p-dependent signal requires Grr1p. RGT2 and GRR1 also play a role in regulating the expression of the HXT genes, which appear to be the upstream components of the glucose-transport-dependent pathway regulating maltose permease inactivation. RGT2-1, which was identified as a dominant mutation causing constitutive expression of several HXT genes, causes constitutive proteolysis of maltose permease, that is, in the absence of glucose. A model of these glucose sensing/signaling pathways is presented.

scholarly journals 3D Modeling of Silver Doped ZrO2 Coupled Graphene-Based Mesoporous Silica Quaternary Nanocomposite for a Nonenzymatic Glucose Sensing Effects

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 193
Author(s):  
Kamrun Nahar Fatema ◽  
Chang-Sung Lim ◽  
Yin Liu ◽  
Kwang-Youn Cho ◽  
Chong-Hun Jung ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Mesoporous Silica ◽  
Photoelectron Spectroscopy ◽  
Glucose Sensor ◽  
Diffuse Reflectance Spectroscopy ◽  
Active Material ◽  
Glucose Sensing ◽  
X Ray ◽  
Transmission Electron

We described the novel nanocomposite of silver doped ZrO2 combined graphene-based mesoporous silica (ZrO2-Ag-G-SiO2,) in bases of low-cost and self-assembly strategy. Synthesized ZrO2-Ag-G-SiO2 were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDX), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), Raman spectroscopy, Nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy (XPS), and Diffuse Reflectance Spectroscopy (DRS). The ZrO2-Ag-G-SiO2 as an enzyme-free glucose sensor active material toward coordinate electro-oxidation of glucose was considered through cyclic voltammetry in significant electrolytes, such as phosphate buffer (PBS) at pH 7.4 and commercial urine. Utilizing ZrO2-Ag-G-SiO2, glucose detecting may well be finished with effective electrocatalytic performance toward organically important concentrations with the current reaction of 9.0 × 10−3 mAcm−2 and 0.05 mmol/L at the lowest potential of +0.2 V, thus fulfilling the elemental prerequisites for glucose detecting within the urine. Likewise, the ZrO2-Ag-G-SiO2 electrode can be worked for glucose detecting within the interferometer substances (e.g., ascorbic corrosive, lactose, fructose, and starch) in urine at proper pH conditions. Our results highlight the potential usages for qualitative and quantitative electrochemical investigation of glucose through the ZrO2-Ag-G-SiO2 sensor for glucose detecting within the urine concentration.

Cuprous Oxide Films with Hollow Cubic Cage Structure for Nonenzymatic Glucose Detection

NANO ◽  
2019 ◽  
Vol 14 (04) ◽  
pp. 1950045
Author(s):  
Fang Sun ◽  
Lehong Xing ◽  
Xihui Yang ◽  
Hailiang Huang ◽  
Lina Ning
Keyword(s):  
Electrode Materials ◽  
Glucose Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Glucose Sensing ◽  
Glucose Sensors ◽  
Cage Structure ◽  
Active Materials ◽  
Nonenzymatic Glucose Sensor ◽  
Step Procedure

In this study, CuO films with hollow cubic cages were prepared by a facile two-step procedure consisting of electrodeposition synthesis and subsequent direct calcination. First, Cu2O nanocubes were fabricated on ITO substrate through a simple electrodeposition procedure. Then, Cu2O nanocubes were converted to CuO hollow cubic cages without obvious morphological change through direct calcination. The obtained CuO cubic cages serving as active materials illustrated a favorable performance for nonenzymatic glucose sensing with high sensitivity of [Formula: see text]A[Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text] at a low applied potential of 0.50[Formula: see text]V, fast-response time (less than 3[Formula: see text]s), low detection limit of 1.0[Formula: see text][Formula: see text]M and wide linear range up from 2.0[Formula: see text][Formula: see text]M to 1.0[Formula: see text]mM ([Formula: see text]). Moreover, the good selectivity of the CuO cubic cages-based nonenzymatic glucose sensor against electroactive compounds such as ascorbic acid, uric acid and dopamine were also demonstrated. These good features indicate that the as-prepared CuO cubic cages can be used as promising electrode materials, which have a great potential in the development of sensitive and selective nonenzymatic glucose sensors.

Glucose homeostasis and hypothalamic-pituitary-adrenocortical axis during development in rats

1990 ◽  
Vol 259 (5) ◽  
pp. E601-E613 ◽  
Author(s):  
E. P. Widmaier
Keyword(s):  
Stress Responses ◽  
Adrenocorticotropic Hormone ◽  
Glucose Sensor ◽  
Adult Life ◽  
Glucose Sensing ◽  
Physiological Data ◽  
Compensatory Mechanisms ◽  
Definition Of

Glucoprivation represents a model stress in which activation of different stress responses at different ages can be monitored both in vivo and in vitro. Physiological data indicate rat brain contains a liver/pancreas-type glucose sensor, yet no biochemical or immunocytochemical evidence exists for such a sensor. Young rats appear to lack normal hypothalamic glucose-sensing ability and do not show typical secretory patterns of corticotropin-releasing factor, adrenocorticotropic hormone, or corticosterone after experimentally induced glucoprivation. However, they hypersecrete catecholamines and glucagon (compared with adults) and thrive on fuel sources other than glucose that are abundant after birth. High steroid levels during the first 24 h after birth may be critical for inducing gluconeogenic enzymes and promoting differentiation of tissues like pancreas. Neonatal rats also have unique control systems to combat the damaging effects of other stresses like hypoxia; these systems may disappear in adults. Thus the definition of stress may change during development, and the compensatory mechanisms employed to combat stress change from neonatal to adult life and are intricately related to the metabolic needs of the animal.

Direct Observation of Aggregation‐Induced Emission Mechanism

2020 ◽  
Vol 132 (35) ◽  
pp. 15013-15019
Author(s):  
Jianxin Guan ◽  
Rong Wei ◽  
Antonio Prlj ◽  
Jie Peng ◽  
Kun‐Han Lin ◽  
...  
Keyword(s):  
Direct Observation ◽  
Emission Mechanism ◽  
Aggregation Induced Emission

scholarly journals Reduced graphene oxide-supported methylene blue nanocomposite as a glucose oxidase-mimetic for electrochemical glucose sensing

RSC Advances ◽  
2018 ◽  
Vol 8 (57) ◽  
pp. 32565-32573 ◽  
Author(s):  
Shaojun Yang ◽  
Daliang Liu ◽  
Qing Bo Meng ◽  
Shuyao Wu ◽  
Xi-Ming Song
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Glucose Oxidase ◽  
Reduced Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Glucose Sensor ◽  
Glucose Sensing ◽  
Reduced Graphene

A novel electrochemical glucose sensor based on methylene blue-reduced graphene oxide nanocomposite was constructed, and the sensor exhibited good glucose oxidase-mimetic electrocatalytic activity towards glucose and practical applicability.

Sign in / Sign up

Export Citation Format

Share Document