scholarly journals The Chemical Composition and the Acid Base Balance of Archidoris Britannica

1937 ◽  
Vol 22 (1) ◽  
pp. 273-280 ◽  
Author(s):  
R. A. McCance ◽  
M. Masters
Keyword(s):  
Sea Water ◽  
Potassium Phosphate ◽  
The Body ◽  
Mineral Matter ◽  
Acid Base Balance ◽  
Visceral Mass ◽  
Base Balance ◽  
Inorganic Composition ◽  
Calcium And Magnesium ◽  
High Concentrations

The body of Archidoris britannica contains very high concentrations of calcium and magnesium which appear to be combined mostly with CO3 and fluoride. The bulk of these materials are in solid deposits throughout the submucous tissue. Sodium chloride and potassium phosphate account for most of the residual mineral matter.The mucus secreted by the body has an inorganic composition resembling sea water.The visceral mass contains only one-tenth as much calcium and magnesium as the body. The predominating bases are potassium and sodium and the acid radicles are essentially chlorides and phosphates.

The highs and lows of electrolytes part 2: calcium, phosphate and magnesium

2021 ◽  
Vol 12 (1) ◽  
pp. 20-25
Author(s):  
Paula Anderson
Keyword(s):  
Critical Care ◽  
Calcium Phosphate ◽  
The Body ◽  
Cellular Functions ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance ◽  
Critical Care Patients

There are six electrolytes that are important in maintaining homeostasis within the body. They play vital roles in regulating neurological, myocardial, muscular and cellular functions and are involved in fluid and acid–base balance. Recognising and treating electrolyte derangements is an important role for veterinary nurses especially in emergency and critical care patients. This series of two articles will discuss the physiology behind each of the six major electrolytes and discuss to monitor and treat any abnormalities.

Role of peripheral chemoreceptors and central chemosensitivity in the regulation of respiration and circulation.

1982 ◽  
Vol 100 (1) ◽  
pp. 23-40 ◽  
Author(s):  
R G O'Regan ◽  
S Majcherczyk
Keyword(s):  
The Body ◽  
Ion Concentration ◽  
Regulation Of Respiration ◽  
Acid Base Balance ◽  
Acid Base ◽  
Vascular Effects ◽  
Peripheral Chemoreceptor ◽  
Hydrogen Ion Concentration ◽  
Central Chemosensitivity ◽  
Base Balance

Adjustments of respiration and circulation in response to alterations in the levels of oxygen, carbon dioxide and hydrogen ions in the body fluids are mediated by two distinct chemoreceptive elements, situated peripherally and centrally. The peripheral arterial chemoreceptors, located in the carotid and aortic bodies, are supplied with sensory fibres coursing in the sinus and aortic nerves, and also receive sympathetic and parasympathetic motor innervations. The carotid receptors, and some aortic receptors, are essential for the immediate ventilatory and arterial pressure increases during acute hypoxic hypoxaemia, and also make an important contribution to respiratory compensation for acute disturbances of acid-base balance. The vascular effects of peripheral chemoreceptor stimulation include coronary vasodilation and vasoconstriction in skeletal muscle and the splanchnic area. The bradycardia and peripheral vasoconstriction during carotid chemoreceptor stimulation can be lessened or reversed by effects arising from a concurrent hyperpnoea. Central chemoreceptive elements respond to changes in the hydrogen ion concentration in the interstitial fluid in the brain, and are chiefly responsible for ventilatory and circulatory adjustments during hypercapnia and chronic disturbances of acid-base balance. The proposal that the neurones responsible for central chemoreception are located superficially in the ventrolateral portion of the medulla oblongata is not universally accepted, mainly because of a lack of convincing morphological and electrophysiological evidence. Central chemosensitive structures can modify peripheral chemoreceptor responses by altering discharges in parasympathetic and sympathetic nerves supplying these receptors, and such modifications could be a factor contributing to ventilatory unresponsiveness in mild hypoxia. Conversely, peripheral chemoreceptor drive can modulate central chemosensitivity during hypercapnia.

Acid-Base Balance with Different Capd Solutions

1996 ◽  
Vol 16 (1_suppl) ◽  
pp. 126-129 ◽  
Author(s):  
Mariano Feriani ◽  
Claudio Ronco ◽  
Giuseppe La Greca
Keyword(s):  
Acid Production ◽  
Dwell Time ◽  
Lactate Concentration ◽  
The Body ◽  
Plasma Lactate ◽  
Acid Base Balance ◽  
Bicarbonate Concentration ◽  
Acid Base ◽  
Plasma Bicarbonate ◽  
Base Balance

Our objective is to investigate transperitoneal buffer fluxes with solution containing lactate and bicarbonate, and to compare the final effect on body base balance of the two solutions. One hundred and four exchanges, using different dwell times, were performed in 52 stable continuous ambulatory peritoneal dialysis (CAPD) patients. Dialysate effluent lactate and bicarbonate and volumes were measured. Net dialytic base gain was calculated. Patients’ acid-base status and plasma lactate were determined. In lactate-buffered CAPD solution, lactate concentration in dialysate effluent inversely correlated with length of dwell time, but did not correlate with plasma lactate concentration and net ultrafiltration. Bicarbonate concentration in dialysate effluent correlated with plasma bicarbonate and dwell time but not with ultrafiltration. The arithmetic sum of the lactate gain and bicarbonate loss yielded the net dialytic base gain. Ultrafiltration was the most important factor affecting net dialytic base gain. A previous study demonstrated that in patients using a bicarbonate-buffered solution the net bicarbonate gain is a function of dwell time, ultrafiltration, and plasma bicarbonate. By combining the predicted data of the dialytic base gain with the calculated metabolic acid production, an approximate body base balance could be obtained with both lactate and bicarbonate-buffered CAPD solutions. The body base balance in CAPD patients is self-regulated by the feedback between plasma bicarbonate concentration and dialytic base gain. The level of plasma bicarbonate is determined by the dialytic base gain and the metabolic acid production. This can explain the large interpatient variability in acid-base correction. Bicarbonate-buffered CAPD solution is equal to lactate solution in correcting acid-base disorders of CAPD patients.

THE CULTURE OF DUNALIELLA TERTIOLECTA BUTCHER—A EURYHALINE ORGANISM

1960 ◽  
Vol 6 (3) ◽  
pp. 367-379 ◽  
Author(s):  
Jack McLachlan
Keyword(s):  
Sodium Chloride ◽  
Sea Water ◽  
Dunaliella Tertiolecta ◽  
Monovalent Cations ◽  
Minimum Requirement ◽  
Fresh Waters ◽  
Wide Range ◽  
Calcium And Magnesium ◽  
Low Levels ◽  
High Concentrations

Dunaliella tertiolecta Butcher was found to be a euryhaline organism which grew at salinities ranging from 3.75 to 120‰. All the conservative elements of sea water, with the exception of chlorine, were found necessary for growth of the alga. The minimum requirement for sodium was much greater than that for any other element, and it was not possible to substitute other monovalent cations for the minimum requirement. Also, the alga could tolerate high concentrations of sodium chloride. The potassium and sulphur concentrations of the medium could be reduced to very low levels. Dunaliella could also tolerate high concentrations of these two elements. The addition of lithium to the medium inhibited the growth of the alga. High concentrations of sodium could partially eliminate the inhibition due to lithium. The minimum concentrations of calcium and magnesium necessary for growth approached the concentrations found in fresh waters. Calcium and magnesium were inhibitory at high concentrations, but the inhibition at high concentrations could be prevented if a Mg/Ca ratio of 4 was maintained over a wide range of concentrations in the medium.

scholarly journals Relationship Between Gender, Age, Duration And Frequency Of Hemodialysis Therapy With The Creatinine Level reduction Of Pre And Post Hemodialysis

2019 ◽  
Vol 5 (1) ◽  
pp. 41
Author(s):  
Anny Thuraidah ◽  
Misbawati Misbawati ◽  
Nurlailah Nurlailah ◽  
Haitami Haitami
Keyword(s):  
Creatinine Level ◽  
Sampling Technique ◽  
The Body ◽  
P Value ◽  
Acid Base Balance ◽  
Cross Sectional ◽  
Significant Difference ◽  
Patient Will ◽  
Base Balance ◽  
The Relationship

The kidneys are organs of the body that function to regulate water balance in the body, the concentration of electrolytes in the blood and acid-base balance and secretion of waste material. If the kidney fails to function, the patient will need immediate treatment and even undergo hemodialysis (HD) therapy. A critical indicator in determining whether a person with impaired kidney function requires HD therapy is to know the creatinine level. The study aimed to ascertain the differences in creatinine levels pre and post HD also study the relationship between the age, gender, duration and frequency of HD therapy of respondents with the decrease of creatinine levels pre and post. Type of research detailed survey with a cross-sectional design. The sample was taken using a total sampling technique of 35 respondents from H BadaruddinKasimHospitalin Tanjung with a sample examination technique using the Jaffe method. The examination results of creatinine levels average for pre and post hemodialysis was11,36 and 5,58 mg/dl, which decreased 51%. The analysis statistically used Paired T-Test has a p-value = 0,000, indicating a significant difference for creatinine levels pre and post HD. Relationship between Age, Gender, Duration, and Frequency of HD Therapy with the decrease of creatinine levels pre and post HD was analyzed with Spearmen correlation and had p values more than 0,05. It means there was no relation between them. Conclusion there were significant differences in creatinine levels reduction pre and post HD while the relationship between the four of respondent characteristics to the magnitude of creatinine reduction show that there was no significant relationship.

scholarly journals Study of Electrolyte Levels in Diabetic Patients

2019 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Nur Qadri Rasyid ◽  
Muawanah Usman
Keyword(s):  
Diabetes Mellitus ◽  
The Body ◽  
Diabetic Patients ◽  
Acid Base Balance ◽  
Normal Range ◽  
Serum Electrolyte ◽  
High Blood Glucose ◽  
Glucose Levels ◽  
Base Balance ◽  
Group B

Diabetes mellitus is a metabolic disorder / disease characterized by high blood glucose levels (hyperglycemia) with changes in carbohydrate, lipid, and protein metabolism in the body due to disruption in insulin action, insulin secretion or both. These metabolic changes affect the concentration of electrolytes. Electrolytes contained in the body play an important role in many body processes, such as controlling fluid levels, acid base balance (pH), nerve conduction, blood clotting and muscle contraction. Sodium, potassium and chloride are the most common macroelectrolytes and correlate with diabetes mellitus. In this study, we examined the prevalence of diabetes and its relationship to electrolyte concentrations in 28 subjects, divided into two groups: group A consisted of 14 diabetic patients in Labuang Baji Hospital and group B consisting of 14 non-diabetic subjects. The results of the research conducted showed that serum electrolyte levels (Na +, K +, Cl-) for the control were all in the normal range. In contrast, serum electrolyte (Na +, Cl-) levels have two patients who have Na + electrolyte levels below the normal range.  

scholarly journals WHAT IS ORP AND WHAT YOU SHOULD KNOW ABOUT IT

2014 ◽  
Vol 11 (1) ◽  
pp. 32-38
Author(s):  
Irena Čerčikienė ◽  
Jolanta Jurkevičiūtė ◽  
Dalė Židonytė
Keyword(s):  
Mineral Water ◽  
Reduction Potential ◽  
The Body ◽  
Acid Base Balance ◽  
Reduction Potentials ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Bactericidal Properties ◽  
Base Balance ◽  
Two Parameters

Currently in mass media and advertising we often hear about the importance of living water in human daily life. You may ask, “What is living water? Is it really living? Is it alkaline?” The importance of water to the human body can be determined by the oxidation – reduction potential (ORP) – a parameter characterizing the ability of the matter to give and connect electrons, which can be measured not only in water but also in food and in the air. Solutions, which contain negative ORP value (e.g. alkaline ionized water), are characterized by reduction features and have the ability to neutralize free radicals and stop the signs of aging. Solutions containing positive ORP value have oxidative properties, which are typical for the alkaline ionized water, which has bactericidal properties. Thus, the ionized water has two parameters: its pH and oxidation - reduction potential, which make it different from the ordinary water. Ionized water, like the raw unprocessed food, is considered to be the body rejuvenating agent. The basic principle, which should be followed, is to consume food and water, which contain the lowest possible negative ORP. The authors provide the research results, although, it is known that most of water tests are difficult to reproduce due to objective reasons, as water, with the gases dissolved in it, represents a very complicated balanced oxidation – reduction system. Oxidation reduction potentials of drinking and mineral water, as well as other beverages, have been studied, and the dynamics of these parameters in ionized water over time has been determined. Key words: acid-base balance, pH index, oxidation – reduction potential (ORP), ionized water, alkaline water, living water, catholyte, acidic water, inanimate water, anolyte.

Temperature and acid—base balance in ectothermic vertebrates: the imidazole alphastat hypotheses and beyond

2002 ◽  
Vol 205 (23) ◽  
pp. 3587-3600 ◽  
Author(s):  
Richard F. Burton
Keyword(s):  
Cell Function ◽  
The Body ◽  
Published Data ◽  
Passive Component ◽  
Ph Homeostasis ◽  
Acid Base Balance ◽  
Other Information ◽  
Base Balance ◽  
Fish Cells ◽  
Temperature Responses

SUMMARY The `imidazole alphastat hypothesis' states that intracellular and extracellular pH, partly via buffering by imidazole groups, change with temperature in a way that keeps imidazole and protein ionization constant, thus maintaining cell function and minimizing shifts of base equivalents and total CO2, while adjustment of PCO2 involves imidazole-based receptors. `The hypothesis', which is actually several hypotheses, has been variously perceived and judged, but its underlying conceptual framework remains largely valid, and is reformulated using differential equations requiring less information input than their integral equivalents. Their usefulness is illustrated with published data on temperature responses in fish cells and whole tetrapods. Mathematical modelling allows general principles to be explored with less immediate concern for uncertainties in experimental data and other information. In tetrapods, it suggests that warming is followed by a loss of base equivalents from the body, and that this loss is due to metabolic adjustments that are not part of pH homeostasis. Uncertainties include intracellular buffer values, local variations in PCO2 within the body, the possible role of buffering by bone mineral, and the temperature dependence of pK values for CO2/HCO3- and imidazole groups. The equations utilize a single, notional, temperature-dependent pK value for all non-bicarbonate buffers in a given body compartment. This approximates to the`passive component' of pH adjustment to temperature change as measured by the homogenate technique. Also discussed are the diversity of cell responses within individual animals, relevant aspects of the control of ventilation,metabolism and transmembrane transport, and the basis of optimum pH—temperature relationships.

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