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Methods and Protocols, Volume 2, Issue 3

September 2019 - 24 articles

Cover Story: Wide-field temporal focused two-photon microscopy enables high-speed volumetric imaging via the simultaneous acquisition of a large sample area with high lateral and axial resolution. Implementations to date have been held back due to the requirement for high fluence laser sources for the excitation of a large area, which typically operated at a low repetition. Achieving high signal intensity in this configuration necessitates increasing the energy per pulse; however, this exacerbates photobleaching in a power-law fashion. We demonstrate that the increase in the repetition rate of the laser system, within thermal constraints compatible with live imaging, strongly enhances fluorescence signal intensity without accelerating photobleaching. We apply these findings to the volumetric imaging of the nematode C. elegans sensory neurons. View this paper.
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Articles (24)

  • Article
  • Open Access
9 Citations
5,619 Views
11 Pages

Dynamic Macronutrient Meal-Equivalent Menu Method: Towards Individual Nutrition Intervention Programs

  • Ana Teresa Limon-Miro,
  • Veronica Lopez-Teros and
  • Humberto Astiazaran-Garcia

5 September 2019

Nutrition interventions should reflect the state of the art in science and dietetics to meet each patient’s requirements. Incorporating new knowledge into individualized food-based nutrition interventions is a major challenge, and health care p...

  • Protocol
  • Open Access
24 Citations
8,132 Views
11 Pages

An Enhanced Self-Care Protocol for People Affected by Moderate to Severe Lymphedema

  • Janet Douglass,
  • Hayley E. Mableson,
  • Sarah Martindale and
  • Louise A. Kelly-Hope

4 September 2019

Lymphedema is a chronic skin disease that has many causes and leads to significant disfigurement and disability worldwide. Recommendations for lymphedema self-care vary by setting and the World Health Organization guidelines for people affected by ly...

  • Protocol
  • Open Access
1 Citations
6,034 Views
10 Pages

Quantifying Fluorescently Labeled Ceramide Levels in Human Sarcoma Cell Lines in Response to a Sphingomyelin Synthase Inhibitor

  • Srinath Pashikanti,
  • Farjana Afrin,
  • Trevor C. Meldrum,
  • John L. Stegelmeier,
  • Adriene Pavek,
  • Yashar A. Habashi,
  • Kaniz Fatema and
  • Jared J. Barrott

Sphingolipid metabolism is an important process in sustaining the growth needs of rapidly dividing cancer cells. Enzymes that synthesize sphingolipids have become attractive targets in cancer pharmacology. Ceramide is a precursor for synthesizing sph...

  • Protocol
  • Open Access
7 Citations
3,516 Views
10 Pages

Large Field Alpha Irradiation Setup for Radiobiological Experiments

  • Stefan J. Roobol,
  • Jasper J.M. Kouwenberg,
  • Antonia G. Denkova,
  • Roland Kanaar and
  • Jeroen Essers

The use of alpha particles irradiation in clinical practice has gained interest in the past years, for example with the advance of radionuclide therapy. The lack of affordable and easily accessible irradiation systems to study the cell biological imp...

  • Article
  • Open Access
2 Citations
4,281 Views
9 Pages

An Assay to Study Intra-Chromosomal Deletions in Yeast

  • Bailey E. Lucas,
  • Matthew T. McPherson,
  • Tila M. Hawk,
  • Lexia N. Wilson,
  • Jacob M. Kroh,
  • Kyle G. Hickman,
  • Sean R. Fitzgerald,
  • W. Miguel Disbennett,
  • P. Daniel Rollins and
  • Hannah M. Hylton
  • + 4 authors

An accurate DNA damage response pathway is critical for the repair of DNA double-strand breaks. Repair may occur by homologous recombination, of which many different sub-pathways have been identified. Some recombination pathways are conservative, mea...

  • Article
  • Open Access
15 Citations
4,818 Views
20 Pages

The Effects of Chloride Flux on Drosophila Heart Rate

  • Catherine E. Stanley,
  • Alex S. Mauss,
  • Alexander Borst and
  • Robin L. Cooper

Approaches are sought after to regulate ionotropic and chronotropic properties of the mammalian heart. Electrodes are commonly used for rapidly exciting cardiac tissue and resetting abnormal pacing. With the advent of optogenetics and the use of tiss...

  • Article
  • Open Access
12 Citations
8,547 Views
14 Pages

Comparison of Sample Preparation Methods for Multielements Analysis of Olive Oil by ICP-MS

  • Fadwa Damak,
  • Maki Asano,
  • Koji Baba,
  • Mohamed Ksibi and
  • Kenji Tamura

Elemental analysis of olive oils by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is challenging because of the high organic load in olive oil samples and the low analyte concentrations. However, conflicting operating procedures in the prepar...

  • Protocol
  • Open Access
14 Citations
5,002 Views
15 Pages

Method to Convert Stem Cells into Cancer Stem Cells

  • Said M. Afify,
  • Ling Chen,
  • Ting Yan,
  • Anna Sanchez Calle,
  • Neha Nair,
  • Chikae Murakami,
  • Maram H. Zahra,
  • Nobuhiro Okada,
  • Yoshiaki Iwasaki and
  • Akimasa Seno
  • + 1 author

The cancer stem cell (CSC) hypothesis suggests that tumors are sustained exclusively by a small population of the cells with stem cell properties. CSCs have been identified in most tumors and are responsible for the initiation, recurrence, and resist...

  • Protocol
  • Open Access
22 Citations
5,032 Views
8 Pages

Synthesis Chalones and Their Isomerization into Flavanones and Azaflavanones

  • Djenisa H. A. Rocha,
  • Patrícia A. A. M. Vaz,
  • Diana C. G. A. Pinto and
  • Artur M. S. Silva

Flavanones [2-aryl-2,3-dihydrochromen-4(1H)ones] and 2-aryl-2,3-dihydroquinolin-4(1H)-ones are valuable precursors in the synthesis of important pharmacological scaffolds, so efficient methodologies towards their synthesis are important in the medici...

  • Protocol
  • Open Access
1 Citations
4,569 Views
7 Pages

Available protocols for the synthesis of ketocyanine dyes precursor 2,5-bis((dimethylamino)methylene)cyclopentanone are not straightforward and the reported yields are low to moderate. The important feature in the synthesis of this product through or...

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Methods Protoc. - ISSN 2409-9279