Minimum inhibitory concentrations of chlorhexidine- and lactic acid-based teat disinfectants: An intervention trial assessing bacterial selection and susceptibility

Author(s):  
J.A. Schwenker ◽  
U. Schotte ◽  
C.S. Hölzel
2021 ◽  
Vol 291 ◽  
pp. 02006
Author(s):  
Svetlana Noskova ◽  
Stanislav Sukhikh ◽  
Olga Babich ◽  
Olga Bulgakova

Minimum inhibitory concentrations of lactic acid bacteria and other antagonist microorganisms isolated from natural sources of Kaliningrad region (soil, water bodies, plant objects) were determined. It was shown that the minimum inhibitory concentration of Pediococcus pentosaceus metabolites against Escherichia coli is 1.5·107 CFU/ml; Pseudomonas chlororaphis metabolites have no inhibitory effect against the test strain of Escherichia coli under study. It was found that Pediococcus damnosus metabolites adversely affect the growth of Escherichia coli, but at a concentration of 1.5·107 CFU/ml after 6-24 hours of cultivation. For metabolites isolated by Lactobacillus casei, the characteristic minimum inhibitory concentration with respect to the studied Escherichia coli strain is 1.5-107 CFU/ml, and for metabolites isolated by Lactobacillus fermentum, the minimum inhibitory concentration with respect to the studied Escherichia coli strain is 1.5·105 CFU/ml. At a concentration of Bacteroides hypermegas (Megamonas hypermegale) metabolites equal to 1.5·106 CFU/ml, an optical density lower than that of the control is observed. The minimum concentration of Pseudomonas syringae metabolites inhibiting Escherichia coli culture growth is 1.5-107 CFU/ml. For the metabolites Acetobacter aceti and Psychrobacter urativorans, the concentration of 1.5·107 CFU/ml is the lowest to inhibit the growth of Escherichia coli.


Author(s):  
A. W. Sedar ◽  
G. H. Bresnick

After experimetnal damage to the retina with a variety of procedures Müller cell hypertrophy and migration occurs. According to Kuwabara and others the reactive process in these injuries is evidenced by a marked increase in amount of glycogen in the Müller cells. These cells were considered originally supporting elements with fiber processes extending throughout the retina from inner limiting membrane to external limiting membrane, but are known now to have high lactic acid dehydrogenase activity and the ability to synthesize glycogen. Since the periodic acid-chromic acid-silver methenamine technique was shown to demonstrate glycogen at the electron microscope level, it was selected to react with glycogen in the fine processes of the Müller cell that ramify among the neural elements in various layers of the retina and demarcate these cells cytologically. The Rhesus monkey was chosen as an example of a well vascularized retina and the rabbit as an example of a avascular retina to explore the possibilities of the technique.


2000 ◽  
Vol 27 (12) ◽  
pp. 1030-1033 ◽  
Author(s):  
M. Patel ◽  
H. Tawfik ◽  
Y. Myint ◽  
D. Brocklehurst ◽  
J. W. Nicholson

2007 ◽  
Vol 38 (8) ◽  
pp. 28
Author(s):  
DAMIAN MCNAMARA
Keyword(s):  

2013 ◽  
Vol 83 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Francisco Plácido Nogueira Arcanjo ◽  
Paulo Roberto Santos ◽  
Álvaro Jorge Madeiro Leite ◽  
Francisco Sulivan Bastos Mota ◽  
Sérgio Duarte Segall

More than two billion people suffer from anemia worldwide, and it is estimated that more than 50 % of cases are caused by iron deficiency. In this community intervention trial, we evaluated infants aged 10 to 23 months of age (n = 171) from two public child day-care centers. Intervention lasted 18 weeks. The 50-g individual portion (uncooked) of fortified rice provided 56.4 mg of elemental iron as ferric pyrophosphate. Capillary blood samples to test for anemia were taken at baseline and at endpoint. The objective of this study was to evaluate the impact of rice fortified with iron (Ultrarice®) on hemoglobin and anemia prevalence compared with standard household rice. For the fortified rice center, baseline mean hemoglobin was 113.7 ± 9.2 g/L, and at endpoint 119.5 ± 7.7 g/L, p < 0.0001; for the standard rice center, baseline mean hemoglobin value was 113.5 ± 40.7 g/L, and at endpoint 113.6 ± 21.0, p = 0.99. Anemia prevalence for the fortified rice center was 27.8 % (20/72) at baseline, and 11.1 % (8/72) at endpoint, p = 0.012; for the control center, 47.1 % (33/70) were anemic at baseline, and 37.1 % (26/70) at the end of the study, p = 0.23. The Number Needed to Treat (NNT) was 4. In this intervention, rice fortified with iron given weekly was effective in increasing hemoglobin levels and reducing anemia in infants.


2009 ◽  
Author(s):  
Steven E. Knotek ◽  
Alejandra Livas ◽  
Erica Fornaris

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