In this article, recent developments in helium nanodroplet isolation ~HENDI! spectroscopy are reviewed, with an emphasis on the infrared region of the spectrum. We discuss how molecular beam spectroscopy and matrix isolation spectroscopy can be usefully combined into a method that provides a unique tool to tackle physical and chemical problems which had been outside our experimental possibiliti...

Working transiently but recurrently, during more than 40 years we managed to achieve the isolation of cellular mitochondria by differential centrifugation with less mechanical, thermal and chemical trauma; mostly from rodents’ livers, kidneys and brains, and principally at moments of deep rest. The mitochondria present new substructures: filaments, cones and veils. Filamented mitochondria have ...

Isolating RNA from insects is becoming increasingly important in molecular entomology. Four methods including three commercial kits RNeasy Mini Kit (Qiagen), SV Total RNA isolation system (Promega), TRIzol reagent (Invitrogen), and a cetyl trimethylammonium bromide (CTAB)-based method were compared regarding their ability to isolate RNA from whole-body larvae of Thaumatotibia leucotreta (Meyric...

Fault detection via parameter estimation relies in the principle that possible faults in the monitored system can be associated with specific parameters and states of the mathematical model of the system given in the form of an input-output relation: y(t)=f(u,e,θ,x) where y(t) represents the output vector of the system, u(t) the input vector, x(t) the state variables which are partially measura...

The research in extracellular vesicles (EVs) has been rising during the last decade. However, there is no clear consensus on the most accurate protocol to isolate and analyze them. Besides, most of the current protocols are difficult to implement in a hospital setting due to being very time-consuming or to requirements of specific infrastructure. Thus, our aim is to compare five different proto...

BACKGROUND The treatment of rotator cuff tears is still challenging. Tendon tissue engineering (TTE) might be an alternative in future. Tenocytes seem to be the most suitable cell type as they are easy to obtain and no differentiation in vitro is necessary. The aim of this study was to examine, if the long head of the biceps tendon (LHB) can deliver viable tenocytes for TTE. In this context, di...

BACKGROUND Detection of CTCs is a poor prognostic factor for many cancer types; however, their very low frequency represents an obstacle for their detection. The objective of the current study was to compare the performance of commonly used methods for CTCs isolation. METHODS The evaluated methods using spiking experiments of MCF7, SKBR3 and MDA MB-231 breast cancer cell lines were (i) ficoll...

Mitochondria regulate critical components of cellular function via ATP production, reactive oxygen species production, Ca(2+) handling and apoptotic signaling. Two classical methods exist to study mitochondrial function of skeletal muscles: isolated mitochondria and permeabilized myofibers. Whereas mitochondrial isolation removes a portion of the mitochondria from their cellular environment, my...

At the summer workshop of the Korean Endocrine Society held in 2016, some examples of protein experiments were discussed in the session entitled "All about working with proteins." In contrast to what the title suggested, it was unrealistic to comprehensively discuss all protein analytical methods. Therefore, the goal was to outline protein experimental techniques that are useful in research or ...

Hydatid cyst, the larval stage of cestodes Echinococcus spp., is recognized as a zoonotic infection in the world. The World Health Organization (WHO) has recently classified echinococcosis in a group of neglected tropical diseases.The prevalence of Echinococcus granulosus infection is high in Iran due to the presence of various intermediate hosts in this country. Considering the rising trend of...