scholarly journals Properties of a naturally occurring hemagglutinin from the body fluid of goose barnacle

1983 ◽  
Vol 49 (6) ◽  
pp. 983-983 ◽  
Author(s):  
Hisao KAMIYA ◽  
Kyoko OGATA
Keyword(s):  
Body Fluid ◽  
The Body ◽  
Naturally Occurring ◽  
Goose Barnacle

The biocompatibility of biofuel cells operating inside the body

2020 ◽  
Vol 48 (3) ◽  
pp. 867-879
Author(s):  
Geraldine Penven ◽  
Gauthier Menassol ◽  
Jean-Pierre Alcaraz ◽  
François Boucher ◽  
Jacques Thélu ◽  
...  
Keyword(s):  
Medical Devices ◽  
Body Fluid ◽  
Three Dimensional ◽  
Life Time ◽  
The Body ◽  
Biofuel Cells ◽  
Naturally Occurring ◽  
Voltage Output ◽  
Enzymatic Biofuel Cells ◽  
Implanted Medical Devices

In 1968 Wolfson et al. published the concept for producing energy inside the body using catalytic electrodes exposed to the body fluid as an electrolyte and utilising naturally occurring fuels such as glucose. Since then, the technology has advanced to enhance the levels of power using enzymes immobilised within three-dimensional bioelectrodes that are nanostructured. Current research in the field of enzymatic fuel cells is directed toward applying electrochemical and nanostructural expertise to increase the energy density, to increase the power density, to increase the operational stability, and to increase the voltage output. Nonetheless, biocompatibility remains the major challenge for increasing the life-time for implanted enzymatic biofuel cells. Here, we discuss the current issues for biocompatibility and suggest directions to enhance the design of biofuel cells so as to increase the life-time of implantation whilst maintaining sufficient performance to provide power for implanted medical devices.

Stress management: Corpus-based insights into vernacular interpretations of stress

2014 ◽  
Vol 10 (1) ◽  
pp. 81-93
Author(s):  
Laurel Smith Stvan
Keyword(s):  
Traumatic Stress ◽  
American English ◽  
Physical Symptom ◽  
The Body ◽  
Post Traumatic Stress ◽  
The Past ◽  
Academic Texts ◽  
Naturally Occurring ◽  
Post Traumatic ◽  
Semantic Shift

Examination of the term stress in naturally occurring vernacular prose provides evidence of three separate senses being conflated. A corpus analysis of 818 instances of stress from non-academic texts in the Corpus of Contemporary American English (COCA) and the Corpus of American Discourses on Health (CADOH) shows a negative prosody for stress, which is portrayed variously as a source outside the body, a physical symptom within the body and an emotional state. The data show that contemporary speakers intermingle the three senses, making more difficult a discussion between doctors and patients of ways to ‘reduce stress’, when stress might be interpreted as a stressor, a symptom, or state of anxiety. This conflation of senses reinforces the impression that stress is pervasive and increasing. In addition, a semantic shift is also refining a new sense for stress, as post-traumatic stress develops as a specific subtype of emotional stress whose use has increased in circulation in the past 20 years.

Exploitation of plant and archaeal viruses in bionanotechnology

2009 ◽  
Vol 37 (4) ◽  
pp. 665-670 ◽  
Author(s):  
David J. Evans
Keyword(s):  
The Body ◽  
Layer By Layer ◽  
Archaeal Virus ◽  
Sulfolobus Islandicus ◽  
Naturally Occurring ◽  
Archaeal Viruses ◽  
Nanobuilding Blocks ◽  
Multiple Copies ◽  
Site Selective ◽  
Virion Surface

CPMV (cowpea mosaic virus), a plant virus, is a naturally occurring sphere-like nanoparticle, and is used as a synthon and/or template in bionanoscience. The virions formed by CPMV can be regarded as programmable nanobuilding blocks with a diameter of ∼30 nm. A range of molecules have been attached to this viral nanoscaffold, yielding stable nanoparticles that display multiple copies of the desired molecule. It has been shown that, in addition to surface amine groups, surface carboxy groups are also addressable, and a procedure has been developed that enables introduction of reactive thiols at the virion surface that avoids virus aggregation. Furthermore, the virions can be functionalized to form electroactive nanoparticles. Methods for the construction of arrays and multilayers, using a layer-by-layer approach, have been established. As proof of concept, for example, CPMV particles have been immobilized on surfaces and arranged in defined layers. Engineered variants of CPMV can be used as templates for mineralization with, for example, silica to give monodisperse robust silica nanoparticles of ∼32 nm. SIRV2 (Sulfolobus islandicus rod-shaped virus 2), is a robust archaeal virus, resistant to high temperature and low pH. SIRV2 can act as a template for site-selective and spatially controlled chemical modification. Both the ends and the body of the virus, or the ends only, can be chemically addressed; SIRV2 can be regarded as a structurally unique nanobuilding block.

Of the Movement of Worms

1950 ◽  
Vol 27 (1) ◽  
pp. 29-39 ◽  
Author(s):  
GARTH CHAPMAN
Keyword(s):  
Hydrostatic Pressure ◽  
Closed System ◽  
Body Fluid ◽  
The Body ◽  
Cross Sectional ◽  
Working Length ◽  
Cylindrical Form ◽  
Maximum Thrust

Four aspects of the functioning of a fluid-filled cylindrical animal have been examined, viz.: (I) the role of the body fluid as a skeleton for the interaction of the longitudinal and circular muscles of which the animal must be composed; (2) the measurement of the maximum thrust which the animal can exert by measurement of its internal hydrostatic pressure; (3) the application of the force to the substratum and the part played by friction; (4) the relation between the changes in dimensions of the animal and the working length of the muscles. Under (1) the necessity for a longitudinal and circular construction has been shown and the necessity for a closed system emphasized. Under (2) the pressure exerted on the body fluid by the contraction of the longitudinal and circular muscles is discussed, and from their cross-sectional areas it is shown to be probable that when contracting maximally in Lumbricus they are not balanced, but that the longitudinals are about ten times as strong as the circulars. Under (3) it is shown that the strength of an animal as measured by its internal hydrostatic pressure is sufficient to account for its customary activities. Use which may be made of the longitudinals during burrowing is pointed out. Under (4) it is shown to be mechanically sound for burrowing animals of cylindrical form to be ‘fat’, but that a ‘thin’ animal is more efficient at progression.

Studies on the Physiology of Ascaris Lumbricoides

1952 ◽  
Vol 29 (1) ◽  
pp. 22-29
Author(s):  
A. D. HOBSON ◽  
W. STEPHENSON ◽  
A. EDEN
Keyword(s):  
Ascaris Lumbricoides ◽  
Body Fluid ◽  
External Medium ◽  
Chloride Concentration ◽  
The Body ◽  
Considerable Proportion ◽  
Limiting Factor ◽  
Inorganic Cations ◽  
Sodium And Potassium ◽  
Total Concentrations

The results obtained in this investigation are admittedly not as extensive as is desirable but they allow certain conclusions to be drawn. 1. The sodium and potassium contents of the body fluid of Ascaris lumbricoides are somewhat variable, but these variations do not seem to be dependent upon those of the external medium. 2. The calcium and magnesium contents of the body fluid are relatively constant and are not affected by those of the external medium. 3. The chloride concentration of the body fluid is closely related to and always remains lower than that of the external medium. 4. As shown in Table 2, there is a large gap between the total concentrations of inorganic cations and anions in the intestinal fluid of the pig. Presumably a considerable proportion of the inorganic cations are combined with organic anions, at present undetermined. Exposing the worms to saline media composed of chloride caused a large rise in the internal chloride concentration. This may well be a limiting factor in the life of the animals in such media, and the next step forward would seem to be the fuller analysis of the environment to which they are normally exposed.

scholarly journals Could radical pairs play a role in xenon-induced general anesthesia?

2020 ◽  
Author(s):  
Jordan Smith ◽  
Hadi Zadeh Haghighi ◽  
Christoph Simon
Keyword(s):  
General Anesthesia ◽  
Radical Pair ◽  
The Body ◽  
Radical Pair Mechanism ◽  
General Anesthetic ◽  
Radical Pairs ◽  
Naturally Occurring ◽  
Isotopic Dependence ◽  
Anesthetic Potency ◽  
Recombination Dynamics

ABSTRACTUnderstanding the mechanisms underlying anesthesia would be a key step towards understanding consciousness. The process of xenon-induced general anesthesia has been shown to involve electron transfer, and the potency of xenon as a general anesthetic exhibits isotopic dependence. We propose that these observations can be explained by a mechanism in which the xenon nuclear spin influences the recombination dynamics of a naturally occurring radical pair of electrons. We develop a simple model inspired by the body of work on the radical-pair mechanism in cryptochrome in the context of avian magnetoreception, and we show that our model can reproduce the observed isotopic dependence of the general anesthetic potency of xenon in mice. Our results are consistent with the idea that radical pairs of electrons with entangled spins could be important for consciousness.

scholarly journals MANAGEMENT OF CHRONIC KIDNEY DISEASE BY AYURVEDA W.S.R. TO BASTI

2020 ◽  
Vol 8 (9) ◽  
pp. 4426-4430
Author(s):  
Bhuvnesh Sharma ◽  
Gyanendra Datta Shukla ◽  
Parul Sharma
Keyword(s):  
Quality Of Life ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Body Fluid ◽  
Financial Burden ◽  
Vital Role ◽  
The Body ◽  
Gradual Loss ◽  
Urine Formation

Kidneys plays a vital role in homeostasis by maintaining the body fluid and removing the harmful toxins out of the body through urine formation. Chronic kidney disease is a type of kidney disease which is pro-gressive in nature and there is gradual loss of kidney function over a period of months or years and have complex and different etio-pathologies. With the growing number of cases and keeping in mind the availa-ble conventional line of treatment and its financial burden on patient, Ayurveda through its holistic line of management, either in the form of Shamana & Shodhana or in the form of dietary advices stand distinct and it seems to be effective and safe. And by including proper daily dietary rules and regimens in patients of Chronic kidney disease (CKD) it can be very effectively managed. Here Trinpanchmool, Punarnava, Gokshur used in Basti. Basti plays a vital role here in CKD, it helps in expelling out the uremic toxins which originates in gut thereby improving the quality of life and reducing the sign and symptoms of dis-ease.

scholarly journals Transcriptomic Analysis Reveals that Atf3/c-Jun/Lgals3 axis is associated with Central Diabetes Insipidus after Hypothalamic Injury

2021 ◽  
Author(s):  
Mingfeng Zhou ◽  
Yichao Ou ◽  
Guangsen Wu ◽  
Kai Li ◽  
Junjie Peng ◽  
...  
Keyword(s):  
Diabetes Insipidus ◽  
Arginine Vasopressin ◽  
Body Fluid ◽  
Microglial Activation ◽  
The Body ◽  
Transcriptomic Analysis ◽  
Central Diabetes Insipidus ◽  
Electrolyte Imbalance ◽  
Hypothalamic Injury ◽  
Vasopressin Neurons

Background: Hypothalamic injury causes several complicated neuroendocrine-associated disorders, such as water-electrolyte imbalance, obesity, and hypopituitarism. Among these, central diabetes insipidus (CDI), characterized by polyuria, polydipsia, low urine specific gravity, and deficiency of arginine vasopressin contents, is a typical complication after hypothalamic injury. Methods: CDI was induced by hypothalamic pituitary stalk injury in male animals. Behavioral parameters and blood sample were collected to evaluate the characteristics of body fluid metabolism imbalance. The brains were harvested for high-throughput RNA sequencing and immunostaining to identify pathophysiological changes in corresponding hypothalamic nuclei. Results: Based on transcriptomic analysis, we demonstrated the upregulation of the Atf3/c-Jun axis and identified Lgals3, a microglial activation related gene, as the most significant target gene in response to the body fluid imbalance in CDI. Furthermore, we found that the microglia possessed elevated phagocytic ability, which could promote the elimination of arginine vasopressin neurons after hypothalamic injury. Conclusion: Our findings suggested that the Atf3/c-Jun/Lgals3 axis was associated with the microglial activation, and might participate in the loss of functional arginine vasopressin neurons in CDI after hypothalamic injury.

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