PubMed | Illinois State University, Glenbard North High School and Provena Covenant Medical Center
Type: Journal Article | Journal: International journal of sports physical therapy | Year: 2014
Due to the repetitive rotational and distractive forces exerted onto the posterior shoulder during the deceleration phase of the overhead throwing motion, limited glenohumeral (GH) range of motion (ROM) is a common trait found among baseball players, making them prone to a wide variety of shoulder injuries. Although utilization of instrument-assisted soft tissue mobilization (IASTM), such as the Graston Technique, has proven effective for various injuries and disorders, there is currently no empirical data regarding the effectiveness of this treatment on posterior shoulder tightness.To determine the effectiveness of IASTM in improving acute passive GH horizontal adduction and internal rotation ROM in collegiate baseball players.Thirty-five asymptomatic collegiate baseball players were randomly assigned to one of two groups. Seventeen participants received one application of IASTM to the posterior shoulder in between pretest and posttest measurements of passive GH horizontal adduction and internal rotation ROM. The remaining 18 participants did not receive a treatment intervention between tests, serving as the controls. Data were analyzed using separate 2 2 mixed-model analysis of variance, with treatment group as the between-subjects variable and time as the within-subjects variable.A significant group-by-time interaction was present for GH horizontal adduction ROM with the IASTM group showing greater improvements in ROM (11.1) compared to the control group (-0.12) (p <0.001). A significant group-by-time interaction was also present for GH internal rotation ROM with the IASTM group having greater improvements (4.8) compared to the control group (-0.14) (p < 0.001).The results of this study indicate that an application of IASTM to the posterior shoulder provides acute improvements in both GH horizontal adduction ROM and internal rotation ROM among baseball players.2b.
Ali M.Y.,University of Illinois at Urbana - Champaign |
Anand S.V.,University of Illinois at Urbana - Champaign |
Tangella K.,University of Illinois at Urbana - Champaign |
Tangella K.,Provena Covenant Medical Center |
And 3 more authors.
Journal of Visualized Experiments | Year: 2015
Cancer cells respond to matrix mechanical stiffness in a complex manner using a coordinated, hierarchical mechano-chemical system composed of adhesion receptors and associated signal transduction membrane proteins, the cytoskeletal architecture, and molecular motors1, 2. Mechanosensitivity of different cancer cells in vitro are investigated primarily with immortalized cell lines or murine derived primary cells, not with primary human cancer cells. Hence, little is known about the mechanosensitivity of primary human colon cancer cells in vitro. Here, an optimized protocol is developed that describes the isolation of primary human colon cells from healthy and cancerous surgical human tissue samples. Isolated colon cells are then successfully cultured on soft (2 kPa stiffness) and stiff (10 kPa stiffness) polyacrylamide hydrogels and rigid polystyrene (~3.6 GPa stiffness) substrates functionalized by an extracellular matrix (fibronectin in this case). Fluorescent microbeads are embedded in soft gels near the cell culture surface, and traction assay is performed to assess cellular contractile stresses using free open access software. In addition, immunofluorescence microscopy on different stiffness substrates provides useful information about primary cell morphology, cytoskeleton organization and vinculin containing focal adhesions as a function of substrate rigidity. © 2015 Journal of Visualized Experiments.
Schulmerich M.V.,University of Illinois at Urbana - Champaign |
Reddy R.,University of Illinois at Urbana - Champaign |
Kodali A.K.,University of Illinois at Urbana - Champaign |
Elgass L.J.,University of Illinois at Urbana - Champaign |
And 2 more authors.
Analytical Chemistry | Year: 2010
Confocal Raman microscopy is often used for optical sectioning but is problematic when the sample plane of interest has a weak Raman cross-section/signal relative to areas that are out-of-focus. This is especially true for clinical samples in pathology, which consist of a thin tissue (∼5 μm) sample placed on a thick glass slide. Here, we recognize that the problem is the result of the extent of the illumination at the confocal plane being larger than the size of the sample and propose a dark field illumination scheme to efficiently reject substrate signals. The ability of several optical configurations in rejecting out-of-plane signal is investigated for two model systems: SU-8 photo resist over Teflon and SU-8 photo resist over polystyrene. The proposed reflective dark field approach, in which excitation converged to a focal point slightly above the focal plane of the collection optics, was found to be most effective in recording data from the sample. The proposed approach is validated by the rejection of substrate response (fluorescence) in spectra acquired from ∼4 μm of breast tissue on a glass microscope slide. The proposed approach is easy to implement on existing confocal systems, has a straightforward optimization in acquiring data, and is not expected to result in loss of lateral resolution in mapping experiments. © 2010 American Chemical Society.
Mir M.,University of Illinois at Urbana - Champaign |
Ding H.,University of Illinois at Urbana - Champaign |
Wang Z.,University of Illinois at Urbana - Champaign |
Reedy J.,Provena Covenant Medical Center |
And 2 more authors.
Journal of Biomedical Optics | Year: 2010
Blood smear analysis has remained a crucial diagnostic tool for pathologists despite the advent of automatic analyzers such as flow cytometers and impedance counters. Though these current methods have proven to be indispensible tools for physicians and researchers alike, they provide limited information on the detailed morphology of individual cells, and merely alert the operator to manually examine a blood smear by raising flags when abnormalities are detected. We demonstrate an automatic interferometry-based smear analysis technique known as diffraction phase cytometry (DPC), which is capable of providing the same information on red blood cells as is provided by current clinical analyzers, while rendering additional, currently unavailable parameters on the 2-D and 3-D morphology of individual red blood cells. To validate the utility of our technique in a clinical setting, we present a comparison between tests generated from 32 patients by a state of the art clinical impedance counter and DPC. © 2010 Society of Photo-Optical Instrumentation Engineers.