scholarly journals The potential of backscattering interferometry as an in vitro clinical diagnostic tool for the serological diagnosis of infectious disease

The Analyst ◽  
2010 ◽  
Vol 135 (7) ◽  
pp. 1535 ◽  
Author(s):  
Amanda Kussrow ◽  
Carolyn S. Enders ◽  
Arnold R. Castro ◽  
David L. Cox ◽  
Ronald C. Ballard ◽  
...  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Hee-Gyeong Yi ◽  
Hyeonji Kim ◽  
Junyoung Kwon ◽  
Yeong-Jin Choi ◽  
Jinah Jang ◽  
...  

AbstractRapid development of vaccines and therapeutics is necessary to tackle the emergence of new pathogens and infectious diseases. To speed up the drug discovery process, the conventional development pipeline can be retooled by introducing advanced in vitro models as alternatives to conventional infectious disease models and by employing advanced technology for the production of medicine and cell/drug delivery systems. In this regard, layer-by-layer construction with a 3D bioprinting system or other technologies provides a beneficial method for developing highly biomimetic and reliable in vitro models for infectious disease research. In addition, the high flexibility and versatility of 3D bioprinting offer advantages in the effective production of vaccines, therapeutics, and relevant delivery systems. Herein, we discuss the potential of 3D bioprinting technologies for the control of infectious diseases. We also suggest that 3D bioprinting in infectious disease research and drug development could be a significant platform technology for the rapid and automated production of tissue/organ models and medicines in the near future.


Author(s):  
Instrumentation Cohn ◽  
Richard Domanik
Keyword(s):  

2021 ◽  
pp. medethics-2020-106940
Author(s):  
Emily C Lisi

Madison Kilbride recently argued that insurance (eg, Centers for Medicare & Medicaid Services (CMS)) should cover in vitro fertilisation with preimplantation genetic testing (IVF-PGT) services for couples at high risk of having a child affected with a genetic condition. She argues that IVF-PGT meets CMS’s definition of ‘medically necessary care’, where such care includes ‘services or supplies needed to diagnose or treat an illness, injury, condition, disease or its symptoms’. Kilbride argues that IVF-PGT satisfies this definition in two ways: as a diagnostic tool and as a treatment. Contradicting Kilbride, however, I argue that IVF-PGT provides neither diagnosis nor treatment under CMS’s definition. Thus, as long as we accept CMS’s definition of medically necessary care—which Kilbride does, explicitly—it follows that IVF-PGT does not count as medically necessary care. Still, there may be other reasons to conclude that IVF-Preimplantation genetic testing should be covered, and so, it would be a mistake to reject Kilbride’s conclusion altogether. The problem is simply that Kilbride’s argument—that the procedure should be covered because it is medically necessary per CMS’s definition—is not sound. I conclude by discussing a number of other genetic services that are not currently being covered despite the fact that (unlike IVF-PGT) they do seem to satisfy CMS’s definition of ‘medically necessary diagnosis or treatment’. These services, I argue, should be provided under CMS before we consider expanding coverage to include elective procedures such as IVF-PGT.


2017 ◽  
Vol 2 (2) ◽  
pp. 42-47
Author(s):  
Shahanara Begum ◽  
Md. Abdullah Yusuf ◽  
Bhuiyan Mohammad Mahtab Uddin

Diagnostic Microbiology is the tool that makes it possible to identify the exact pathogens of infectious diseases and the most optimal therapy at the level of individual patients. Conventional methods require time to grow the microbes in vitro under specific conditions and not all microbes can easily be cultured. This is followed by biochemical methods for identification which further makes the process lengthy. Transport of the specimens under less than ideal conditions, prior use of antibiotics and small number of organisms are among the factors that render culture-based methods less reliable. Newer methods depend on amplification of nucleic acids followed by use of probes for identification. This mitigates the need for higher microbial load, presence of metabolically active viable organisms and shortens the time. These methods can be used to detect antibiotic resistance genes directly from the specimen and help direct targeted therapy with efficacy. Since these methods will not fulfill all the diagnostic needs, a second approach is being used to shorten the time to identification after the organism has already grown. Mass spectrometry and bioinformatics are the tools making this possible. This review gives a historical perspective on diagnostic microbiology, discusses the pitfalls of current methodology and provides an overview of newer and future methods.Bangladesh Journal of Infectious Disease 2015;2(2):42-47


2007 ◽  
Vol 51 (11) ◽  
pp. 4071-4076 ◽  
Author(s):  
Yoshihisa Kohno ◽  
Hideaki Ohno ◽  
Yoshitsugu Miyazaki ◽  
Yasuhito Higashiyama ◽  
Katsunori Yanagihara ◽  
...  

ABSTRACT The recommended treatments for Mycobacterium avium complex (MAC) infectious disease are combination regimens of clarithromycin (CLR) or azithromycin with ethambutol and rifamycin. However, these chemotherapy regimens are sometimes unsuccessful. Recently developed antimicrobial agents, such as newer fluoroquinolones (FQs) containing C-8 methoxy quinolone (moxifloxacin [MXF] and gatifloxacin [GAT]), are expected to be novel antimycobacterial agents. Here, we evaluated the in vitro and in vivo antimycobacterial activities of three FQs (MXF, GAT, and levofloxacin) and CLR against clinically isolated MAC strains. Subsequently, the in vitro and in vivo synergic activities of FQ-CLR combinations against MAC strains were investigated. CLR and the individual FQs alone showed promising activity against MAC strains in vitro, and the bacterial counts in organs (lungs, liver, and spleen) of MAC-infected mice treated with single agents were significantly reduced compared to control mice. CLR showed the best anti-MAC effect in vivo. When the three FQs were individually combined with CLR in vitro, mild antagonism was observed for 53 to 57% of the tested isolates. Moreover, mice were infected with MAC strains showing mild antagonism for FQ-CLR combinations in vitro, and the anti-MAC effects of the FQ-CLR combinations were evaluated by counting the viable bacteria in their organs and by histopathological examination after 28 days of treatment. Several FQ-CLR combinations exhibited bacterial counts in organs significantly higher than those in mice treated with CLR alone. Our results indicate that the activity of CLR is occasionally attenuated by combination with an FQ both in vitro and in vivo and that this effect seems to be MAC strain dependent. Careful combination chemotherapy using these agents against MAC infectious disease may be required.


Author(s):  
Emmanuel J. Favaloro ◽  
Mario Plebani ◽  
Giuseppe Lippi

AbstractA revised framework for the regulation of in vitro diagnostic devices (IVDs) came into force in Australia on July 1, 2010 that aims to ‘ensure that public and personal health are adequately protected’, but which instead may lead to adverse outcomes in clinical diagnosis and management. The regulatory process aims to regulate all IVDs, including those used by clinical diagnostic laboratories, which are already subject to scrutiny as part of the current laboratory accreditation process. The IVD regulatory process initiated in Australia is similar to that used in Canada, but different to that currently operating in the USA and Europe. However, it is feasible that other countries will in time adopt a similar regulatory framework, given that many countries are involved in the development process. In this opinion paper, the regulatory process for IVDs across several geographies are outlined, as are some benefits and weaknesses of the new regulatory process now applied to Australia, as potentially planned for other regions of the world.


Blood ◽  
2000 ◽  
Vol 95 (5) ◽  
pp. 1642-1651 ◽  
Author(s):  
Sara E. J. Cotterell ◽  
Christian R. Engwerda ◽  
Paul M. Kaye

Alterations in hematopoiesis are common in experimental infectious disease. However, few studies have addressed the mechanisms underlying changes in hematopoietic function or assessed the direct impact of infectious agents on the cells that regulate these processes. In experimental visceral leishmaniasis, caused by infection with the protozoan parasite Leishmania donovani, parasites persist in the spleen and bone marrow, and their expansion in these sites is associated with increases in local hematopoietic activity. The results of this study show that L donovani targets bone marrow stromal macrophages in vivo and can infect and multiply in stromal cell lines of macrophage, but not other lineages in vitro. Infection of stromal macrophages increases their capacity to support myelopoiesis in vitro, an effect mediated mainly through the induction of granulocyte macrophage-colony stimulating factor and tumor necrosis factor-. These data are the first to directly demonstrate that intracellular parasitism of a stromal cell population may modify its capacity to regulate hematopoiesis during infectious disease.


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