Preparation, standardization and in vitro safety testing of Mycobacterium nosodes (Emtact- polyvalent nosode)

Homeopathy ◽  
2016 ◽  
Vol 105 (03) ◽  
pp. 225-232 ◽  
Author(s):  
Suvarna Joshi ◽  
Sandeepan Mukerjee ◽  
Shashikant Vaidya ◽  
Gitanjali Talele ◽  
Abhay Chowdhary ◽  
...  
Keyword(s):  
In Vitro Testing ◽  
Safety Testing ◽  
Sterility Testing ◽  
Original Stock ◽  
Individual Strain ◽  
Different Strains ◽  
Pathological Material ◽  
Scientific Documentation

Background: Most of the nosodes in the homeopathic pharmacopeia have been sourced from obscure pathological material over a century ago; of which no scientific documentation is available. Method: A method for preparation and standardization of univalent and polyvalent Mycobacterium nosodes (labeled as Emtact), using different strains of Mycobacterium tuberculosis was developed. The committee comprising microbiologists, scientist, pharmacist, homeopaths and clinicians had reviewed and approved the method of preparation of nosode. Preparation of the nosode was based on the reference in the Homeopathy Pharmacopoeia of India (HPI), group N-IV. Strains of M. tuberculosis viz. Standard strain H37Rv, multi-drug resistant (MDR) M. tuberculosis, Mycobacterium bovis (BCG vaccine) and Mycobacterium avium were identified, procured and documented. Twenty billion viable cells for each strain were taken for Original Stock Nosode (OSN). The original stock was prepared by suspending the microbial cells into water for injection (WFI) (1 ml). As per the Indian Pharmacopoeia (IP) monograph, sterility testing was done for different potencies. Polymerase Chain Reaction (PCR) was performed for 30c potency for detection of any DNA material of the source organisms. Result: A polyvalent (multi-strain) and univalent M. tuberculosis nosodes were prepared for research and clinical use. No growth of Mycobacterium was observed in any of the samples above 5c potency. The in-vitro testing for nosode (30c) was found to be free from any organism and DNA material. Conclusion: Mycobacterium nosodes sourced from individual strain and polyvalent Emtact nosode in vitro testing results found to be satisfactory for its handling and utilization. The nosode seems to be safe and may be tested further in vivo to explore its therapeutic application.

In vivo and in vitro testing of gloves for protection against UV-curable acrylate resin systems

1984 ◽  
Vol 11 (5) ◽  
pp. 279-282 ◽  
Author(s):  
Robert L. Rietschel ◽  
Ronald Muggins ◽  
Nicole Levy ◽  
Pat M. Pruitt
Keyword(s):  
In Vitro Testing ◽  
Uv Curable ◽  
Acrylate Resin

Laboratory and in-vitro testing of skin antiseptics: a prediction for in-vivo activity?

1991 ◽  
Vol 18 ◽  
pp. 5-11 ◽  
Author(s):  
F. Baquero ◽  
C. Patrón ◽  
R. Cantón ◽  
M.Martínez Ferrer
Keyword(s):  
In Vitro Testing

scholarly journals Rationally Designing Simple Rod-Like Amphiphilic NIR-Emissive AIE Probes for Precise In-Vivo Detection of Aβ Fibrils/Plaques at A Super-Early Stage

2021 ◽  
Author(s):  
Yipu Wang ◽  
Dong Mei ◽  
Xinyi Zhang ◽  
Da-Hui Qu ◽  
Ju Mei ◽  
...  
Keyword(s):  
High Performance ◽  
Ex Vivo ◽  
Early Stage ◽  
Signal To Noise Ratio ◽  
High Signal ◽  
In Vivo Detection ◽  
Different Strains ◽  
Aβ Fibrils

With increase of social aging, Alzheimer's disease (AD) has been one of the serious diseases threatening human health. The occurrence of A<i>β </i>fibrils<i> </i>or plaques is recognized as the hallmark of AD.<i> </i>Currently, optical imaging has stood out to be a promising technique for the imaging of A<i>β</i> fibrils/plaques and the diagnosis of AD. However, restricted by their poor blood-brain barrier (BBB) penetrability, short-wavelength excitation and emission, and aggregation-caused quenching (ACQ) effect, the clinically used gold-standard optical probes such as <a>thioflavin</a> T (ThT) and thioflavin S (ThS), are not effective enough in the early diagnosis of AD <i>in vivo</i>. Herein, we put forward an “all-in-one” design principle and demonstrate its feasibility in developing high-performance fluorescent probes which are specific to A<i>β</i> fibrils/plaques and promising for super-early <i>in</i>-<i>vivo</i> diagnosis of AD. As a proof of concept, a simple rod-like amphiphilic NIR fluorescent AIEgen, i.e., AIE-CNPy-AD, is developed by taking the specificity, BBB penetration ability, deep-tissue penetration capacity, high signal-to-noise ratio (SNR) into consideration. AIE-CNPy-AD is constituted by connecting the electron-donating and accepting moieties through single bonds and tagging with a propanesulfonate tail, giving rise to the NIR fluorescence, aggregation-induced emission (AIE) effect, amphiphilicity, and rod-like structure, which in turn result in high binding-affinity and excellent specificity to A<i>β</i> fibrils/plaques, satisfactory ability to penetrate BBB and deep tissues, ultrahigh SNR and sensitivity, and high-fidelity imaging capability. <i>In-vitro, ex-vivo,</i> and <i>in-vivo</i> <a>identifying of A<i>β</i> fibrils/plaques</a> in different strains of mice indicate that AIE-CNPy-AD holds the universality to the detection of A<i>β</i> fibrils/plaques. It is noteworthy that AIE-CNPy-AD is even able to trace the small and sparsely distributed A<i>β</i> fibrils/plaques in very young AD model mice such as 4-month-old APP/PS1 mice which are reported to be the youngest mice to have A<i>β</i> deposits in brains, suggesting its great potential in diagnosis and intervention of AD at a super-early stage.

scholarly journals Mining the Microbiota of the Neonatal Gastrointestinal Tract for Conjugated Linoleic Acid-Producing Bifidobacteria

2004 ◽  
Vol 70 (8) ◽  
pp. 4635-4641 ◽  
Author(s):  
E. Rosberg-Cody ◽  
R. P. Ross ◽  
S. Hussey ◽  
C. A. Ryan ◽  
B. P. Murphy ◽  
...  
Keyword(s):  
Linoleic Acid ◽  
Conjugated Linoleic Acid ◽  
Bifidobacterium Bifidum ◽  
Genomic Diversity ◽  
Gas Liquid Chromatography ◽  
Fecal Material ◽  
Single Strain ◽  
Different Strains

ABSTRACT This study was designed to isolate different strains of the genus Bifidobacterium from the fecal material of neonates and to assess their ability to produce the cis-9, trans-11 conjugated linoleic acid (CLA) isomer from free linoleic acid. Fecal material was collected from 24 neonates aged between 3 days and 2 months in a neonatal unit (Erinville Hospital, Cork, Ireland). A total of 46 isolates from six neonates were confirmed to be Bifidobacterium species based on a combination of the fructose-6-phosphate phosphoketolase assay, RAPD [random(ly) amplified polymorphic DNA] PCR, pulsed-field gel electrophoresis (PFGE), and partial 16S ribosomal DNA sequencing. Interestingly, only 1 of the 11 neonates that had received antibiotic treatment produced bifidobacteria. PFGE after genomic digestion with the restriction enzyme XbaI demonstrated that the bifidobacteria population displayed considerable genomic diversity among the neonates, with each containing between one and five dominant strains, whereas 11 different macro restriction patterns were obtained. In only one case did a single strain appear in two neonates. All genetically distinct strains were then screened for CLA production after 72 h of incubation with 0.5 mg of free linoleic acid ml−1 by using gas-liquid chromatography. The most efficient producers belonged to the species Bifidobacterium breve, of which two different strains converted 29 and 27% of the free linoleic acid to the cis-9, trans-11 isomer per microgram of dry cells, respectively. In addition, a strain of Bifidobacterium bifidum showed a conversion rate of 18%/μg dry cells. The ability of some Bifidobacterium strains to produce CLA could be another human health-promoting property linked to members of the genus, given that this metabolite has demonstrated anticarcinogenic activity in vitro and in vivo.

RESEARCH OF THE INFLUENCE OF ANTIBACTERIAL AND FUNGICIDAL PREPARATIONS ON FORMATION BIOFILM OF MICROORGANISMS

2021 ◽  
Vol 1 (4) ◽  
pp. 448-458
Author(s):  
Ekaterina M. Lenchenko ◽  
◽  
Dmitriy V. Stepanov ◽  
Dmitriy A. Blumenkrants ◽  
◽  
...  
Keyword(s):  
Culture Media ◽  
Animal Husbandry ◽  
The Body ◽  
Heterogeneous Structure ◽  
Candida Spp ◽  
Functional Patterns ◽  
Frequency Occurrence ◽  
Pathological Material

The results of studies general patterns formation heterogeneous structure biofilms gram-negative and gram-positive bacteria, as well as yeast-like fungi Candida spp. are presented. Рrocesses intercellular communication of various systematic groups microorganisms has common morphological and functional patterns biofilm formation. Heteromorphic structures of biofilms united by the intercellular matrix have been revealed in natural, industrial, and clinical conditions, both in the body of mammals and birds, and in food products, devices and equipment, animal husbandry and food production technologies. Indication in a large number of microcolonies, as well as yeast and micellar phases in isolates from pathological material of animals, was a differential sign in local and systemic pathologies. Under the influence drugs on biofilms microorganisms, a direct correlation was established between morphometric and densitometric indicators, reflecting a decrease in the frequency occurrence clusters and optical density, respectively. Under the bacteriostatic effect of chemotherapeutic and disinfecting drugs, accumulations altered cells of spheroplastic type, capable forming stable and unstable L-forms, were revealed. For detection of viable microorganisms in a heterogeneous population microorganisms in vitro and in vivo, fluorescence microscopy and culture media with growth factors for the repair cell wall of L-forms bacteria are promising.

Zebrafish semaphorin Z1a collapses specific growth cones and alters their pathway in vivo

Development ◽  
1998 ◽  
Vol 125 (7) ◽  
pp. 1275-1283 ◽  
Author(s):  
W. Shoji ◽  
C.S. Yee ◽  
J.Y. Kuwada
Keyword(s):  
Sensory Neurons ◽  
Lateral Line ◽  
Knockout Mice ◽  
Specific Growth ◽  
Transmembrane Proteins ◽  
Growth Cones ◽  
In Vitro Activity ◽  
Different Strains

The semaphorin/collapsin gene family encodes secreted and transmembrane proteins several of which can repulse growth cones. Although the in vitro activity of Semaphorin III/D/Collapsin 1 is clear, recent analyses of two different strains of semaphorin III/D/collapsin 1 knockout mice have generated conflicting findings. In order to clarify the in vivo action of this molecule, we analyzed sema Z1a, a zebrafish homolog of semaphorin III/D/collapsin 1. The expression pattern of sema Z1a suggested that it delimited the pathway of the growth cones of a specific set of sensory neurons, the posterior ganglion of the lateral line, in zebrafish. To examine the in vivo action of this molecule, we analyzed (1) the pathways followed by lateral line growth cones in mutants in which the expression of sema Z1a is altered in an interesting way, (2) response of lateral line growth cones to exogenous Sema Z1a in living embryos, and (3) the pathway followed by lateral line growth cones when Sema Z1a is misexpressed by cells along their normal route. The results suggest that a repulsive action of Sema Z1a helps guide the growth cones of the lateral line along their normal pathway.

Mining a Nanoparticle Dataset, Compiled Within the MODENA-COST Action

2021 ◽  
pp. 1706-1724
Author(s):  
Sabine Van Miert ◽  
Jan Creylman ◽  
Geert R. Verheyen
Keyword(s):  
Chemical Properties ◽  
In Vitro Testing ◽  
Cost Action ◽  
Robust Model ◽  
Physico Chemical ◽  
Classification And Regression ◽  
Toxic Potential ◽  
Sheer Number

Engineered nanomaterials (ENM) have new or enhanced physico-chemical properties compared to their micron-sized counterparts, but may also have an increased toxic potential. Animal and in vitro testing are typically employed to investigate the toxic effects of (nano)materials. The sheer number of ENMs and their physico-chemical parameters make it impossible to only use in vivo and in vitro testing, and modelling technologies are also deployed to find relationships between ENM parameters and toxicity. A heterogenous dataset containing information on 192 nanoparticle endpoints was compiled within the MODENA COST-Action consortium. Here, the available data was mined to identify relationships between nanoparticle properties and cell-death as measured with four cytotoxicity assays. ANOVA, collinearity analyses and classification and regression trees gave indications on potential relations between the NP-properties and toxicity, but could not deliver a robust model. More information and datapoints are necessary to build well-validated models.

scholarly journals DualSeqDB: the host–pathogen dual RNA sequencing database for infection processes

2020 ◽  
Vol 49 (D1) ◽  
pp. D687-D693
Author(s):  
Javier Macho Rendón ◽  
Benjamin Lang ◽  
Marc Ramos Llorens ◽  
Gian Gaetano Tartaglia ◽  
Marc Torrent Burgas
Keyword(s):  
Pathogenic Bacteria ◽  
High Throughput Sequencing ◽  
Homo Sapiens ◽  
Cell Types ◽  
Natural Hosts ◽  
Host Infection ◽  
Infection Processes ◽  
Different Strains

Abstract Despite antibiotic resistance being a matter of growing concern worldwide, the bacterial mechanisms of pathogenesis remain underexplored, restraining our ability to develop new antimicrobials. The rise of high-throughput sequencing technology has made available a massive amount of transcriptomic data that could help elucidate the mechanisms underlying bacterial infection. Here, we introduce the DualSeqDB database, a resource that helps the identification of gene transcriptional changes in both pathogenic bacteria and their natural hosts upon infection. DualSeqDB comprises nearly 300 000 entries from eight different studies, with information on bacterial and host differential gene expression under in vivo and in vitro conditions. Expression data values were calculated entirely from raw data and analyzed through a standardized pipeline to ensure consistency between different studies. It includes information on seven different strains of pathogenic bacteria and a variety of cell types and tissues in Homo sapiens, Mus musculus and Macaca fascicularis at different time points. We envisage that DualSeqDB can help the research community in the systematic characterization of genes involved in host infection and help the development and tailoring of new molecules against infectious diseases. DualSeqDB is freely available at http://www.tartaglialab.com/dualseq.

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