Osmotic Production of Sterile Oral Rehydration Solutions — An Economic, Low-Technology Method

1993 ◽  
Vol 23 (2) ◽  
pp. 69-72 ◽  
Author(s):  
Michael Wilson ◽  
Phillip Monro ◽  
William AM Cutting

A sterile oral rehydration solution can be produced by immersing in water a semi-permeable cellulose tube containing glucose and salts. Osmotically driven ultrafiltration excludes all microbes and particulate matter even when the immersion water contains 45 × 106 cfu/ml of Pseudomonas aeruginosa, 25 × 107 cfu/ml of Staphylococcus aureus or 20 × 107 cfu/ml of Escherichia coli. Solutions of consistent composition can be obtained by having a standard amount of glucose-electrolytes in a cellulose tube of appropriate dimensions and immersing this in a fixed volume of water for a minimum period of time. The method is simple, inexpensive, low-technology and requires no external source of power. It has potential for producing sterile solutions for injections and intravenous use in situations with very limited and simple resources, in emergencies and during natural disasters. Further studies are now needed to determine whether the method can be adapted to provide the large quantities of oral rehydration fluid needed in field conditions.

2021 ◽  
pp. 026010602199164
Author(s):  
Samuel N Cheuvront ◽  
Robert W Kenefick ◽  
Laura Luque ◽  
Katherine M Mitchell ◽  
Sadasivan Vidyasagar

Background: A historical turning point occurred in the treatment of diarrhea when it was discovered that glucose could enhance intestinal sodium and water absorption. Adding glucose to salt water (oral rehydration solution, ORS) more efficiently replaced intestinal water and salt losses. Aim: Provide a novel hypothesis to explain why mainstream use of ORS has been strongly recommended, but weakly adopted. Methods: Traditional (absorptive) and novel (secretory) physiological functions of glucose in an ORS were reviewed. Results: Small amounts of glucose can stimulate both intestinal absorption and secretion. Glucose can exacerbate a net secretory state and may aggravate pathogen-induced diarrhea, particularly for pathogens that affect glucose transport. Conclusion: A hypothesis is made to explain why glucose-based ORS does not appreciably reduce diarrheal stool volume and why modern food science initiatives should focus on ORS formulations that replace water and electrolytes while also reducing stool volume and duration of diarrhea.


PEDIATRICS ◽  
1981 ◽  
Vol 67 (1) ◽  
pp. 79-83
Author(s):  
Robert E. Black ◽  
Michael H. Merson ◽  
Philip R. Taylor ◽  
Robert H. Yolken ◽  
Md. Yunus ◽  
...  

The use of oral rehydration solutions containing essential electrolytes and either glucose or sucrose of equal osmolality was compared in a double-blind sequential trial of 784 children with rotavirus-associated diarrhea treated at a center in rural Bangladesh. The oral fluid failure rate was 11.5% for the sucrose-containing solution group and 7.3% for the glucose-containing group (P = NS). Vomiting was a significantly more common cause of failure for the group treated with sucrose-containing oral rehydration solution and was associated with an increased rate of intake of the sweeter sucrose-containing solution. The purging rate was not different for the two groups. The oral fluid failure rates for children in the most underweight category (<60% of expected weight for age) were not different from those for other groups, although, as assessed by purging rate and initial dehydration, the stool losses of members of this group constituted a greater proportion of their body weight. Glucose is the preferred carbohydrate for oral electrolyte solutions, although sucrose can be substituted with only minimum loss of efficacy.


PEDIATRICS ◽  
1992 ◽  
Vol 89 (5) ◽  
pp. 980-980
Author(s):  
MARK L. TOCHEN ◽  
DON TSUKAMAKI

To the Editor.— The article by Dr Snyder, "Use and Misuse of Oral Rehydration Therapy for Diarrhea,"1 led us to review our treatment of gastroenteritis, revise our telephone protocols, and seek out rehydration solutions. Our difficulty in obtaining adequate supplies mirrored that of Dr O'Banion.2 Expense to the patient is also an important factor: commercial premixed solutions sell for $4 to $6 per quart in our area, which many families cannot pay. Our solution was to obtain from the World Health Organization the name of the US supplier of oral rehydration solution (ORS) packets and order direct from the supplier (Jianas Bros Packaging Co, 2533 SW Blvd, Kansas City, MO 64108).


2019 ◽  
Vol 17 (3) ◽  
pp. 140-148 ◽  
Author(s):  
A. Ouelhadj ◽  
L. Ait Salem ◽  
D. Djenane

Ce travail vise l’étude de l’activité antibactérienne de l’huile essentielle (HE) de Pelargoniumx asperum et de la bactériocine, la nisine seul et en combinaison vis-à-vis de six bactéries dont quatre sont multirésistantes d’origine clinique. L’activité antibactérienne in vitro a été évaluée par la méthode de diffusion sur gélose. La concentration minimale inhibitrice (CMI) est aussi déterminée pour HE. Les résultats ont révélé une activité antibactérienne significative exercée par HE visà-vis de Staphylococcus aureus (ATCC 43300), Staphylococcus aureus et Escherichia coli avec des diamètres d’inhibition de 36,00 ; 22,50 et 40,00 mm, respectivement. Cependant, l’HE de Pelargonium asperum a montré une activité antibactérienne supérieure par rapport à la nisine. Les valeurs des CMI rapportées dans cette étude sont comprises entre 1,98–3,96 μl/ml. Les combinaisons réalisées entre HE et la nisine ont montré un effet additif vis-à-vis de Escherichia coli (ATCC 25922) avec (50 % HE Pelargonium asperum + 50 % nisine). Par contre, nous avons enregistré une synergie vis-à-vis de Klebsiella pneumoniae avec (75 % HE Pelargonium asperum + 25 % nisine) et contre Pseudomonas aeruginosa avec les trois combinaisons testées. Les résultats obtenus permettent de dire que l’HE de Pelargonium asperum possède une activité antibactérienne ainsi que sa combinaison avec la nisine pourrait représenter une bonne alternative pour la lutte contre l’antibiorésistance.


2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.


Bionatura ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 1335-1339
Author(s):  
Pool Marcos-Carbajal ◽  
Christian Allca-Muñoz ◽  
Ángel Urbano-Niño ◽  
Alberto Salazar-Granara

El objetivo del estudio es determinar la actividad antibacteriana de Metformina frente a Escherichia coli, Staphylococcus aureus y Pseudomonas aeruginosa. Se evaluó la actividad antibacteriana mediante la técnica de Kirby Bauer. Se utilizó cepas de Escherichia coli (ATCC 25922), Staphylococcus aureus (ATCC 25923) y Pseudomonas aeruginosa (ATCC 27853), las cuales se expusieron a Metformina en concentraciones de 250 mg y 500 mg, Ciprofloxacino (CIP) 5 µg, Imipenem (IPM) 10 µg, y Cefoxitin (FOX) 30 µg. Frente a Escherichia coli, Staphylococcus aureus y Pseudomonas aeruginosa se presentó un halo de inhibición de 6 mm. para Metformina 250 mg, 6 mm. para Metformina 500 mg, y un halo de inhibición >25 mm. con el uso de Ciprofloxacino 5 µg, Cefoxitin 30 µg, e Imipenem 10 µg respectivamente. En conclusion, In vitro Metformina a dosis de 250 y 500 mg, no presentó efecto antibacteriano frente a Escherichia coli, Staphylococcus aureus y Pseudomonas aeruginosa.


Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1541
Author(s):  
Jie Zhang ◽  
Jia Wang ◽  
Qingjun Zhu ◽  
Binbin Zhang ◽  
Huihui Xu ◽  
...  

A novel AgBr/Ag2MoO4@InVO4 composite photocatalyst with different heterojunction structures was successfully constructed by compounding InVO4 with Ag2MoO4 and AgBr. According to the degradation, antibacterial and free radical trapping data, the photocatalytic antibacterial and antifouling activities of AgBr/Ag2MoO4@InVO4 composite were evaluated, and the corresponding photocatalytic reaction mechanism was proposed. Adding AgBr/Ag2MoO4@InVO4 composite, the degradation rate of ciprofloxacin (CIP) achieved 95.5% within 120 min. At the same time, the antibacterial rates of Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa) achieved 99.99%. The AgBr/Ag2MoO4@InVO4 composite photocatalyst showed promising usage in photocatalytic antibacterial and purification areas.


2009 ◽  
Vol 58 (3) ◽  
pp. 80-87 ◽  
Author(s):  
Germain Nappert ◽  
Jose Miguel Barrios ◽  
Gordon A. Zello ◽  
Jonathan M. Naylor

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