X-irradiation of developing hippocampal neurons causes changes in neuron population phenotypes, dendritic morphology and synaptic protein expression in surviving neurons at maturity

Publication date: Available online 8 November 2019Source: Neuroscience ResearchAuthor(s): Anggraeini Puspitasari, Hiroyuki Yamazaki, Hidemasa Kawamura, Takashi Nakano, Akihisa Takahashi, Tomoaki Shirao, Kathryn D HeldAbstractThe effects of X-irradiation on developing neurons and their functions are unclear. We used primary cultures of mouse hippocampal neurons to investigate the effects of X-irradiation on cell death in developing neurons by analyzing caspase-3, MAP2 and DAPI-labeled cells, and the phenotypes and function of surviving neurons, by examining GAD67-positive cells as a GABAergic marker, and the synaptic markers synapsin 1, drebrin and PSD-95 through its maturation. One-day in vitro (DIV 1) cells were exposed to 0.5 Gy or 1 Gy of X-rays. A significant increase in the percentage of activated caspase-3, a decrease in the number of MAP2/DAPI-positive cells and change in the percentage of GAD67 positive neurons, compared with sham controls, were found 6 days after 1 Gy and 13 days after 0.5 Gy of X-rays. The expression of PSD-95 and drebrin, as well as drebrin clusters, in the remaining neurons was decreased at DIV 21, in both 0.5 Gy and on 1 Gy-irradiation there was a reduced number of dendritic intersection as well. Together, our findings show that 0.5 Gy and 1 Gy of X-irradiation at DIV 1 not only causes neuronal cell death but elicits an increase in the percentage of inhibitory neurons, changes in the dendrit...
Source: Neuroscience Research - Category: Neuroscience Source Type: research

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CONCLUSIONThis study demonstrated an optimal approach for relieving upper urinary tract obstruction and acute infection in which percutaneous nephrostomy drainage is preferred for patients with severe pyonephrosis, large stones (>10 mm) with high-grade hydronephrosis, steinstrasse, or failure in retrograde ureteric stent placement, while retrograde ureteral catheterization using cystoscopy is suitable for patients diagnosed with small stones (≤10 mm) and low-grade hydronephrosis. PMID: 31796723 [PubMed - as supplied by publisher]
Source: Journal of X-Ray Science and Technology - Category: Radiology Tags: J Xray Sci Technol Source Type: research
AbstractIntroductionWhile the clinical impact of coronal and sagittal alignment in adult spinal deformity (ASD) patients (pts) is established, there is a paucity of data in terms of axial plane deformity and potential association between muscle degeneration and 3D deformity. The purpose of this study was to analyze spinopelvic muscles characteristics in association with the 3D deformity of ASD patients.MethodsThis is a prospective cohort study; primary lumbar scoliosis patients (Cobb  >  20°) were enrolled and sustained a low-dose X-rays with 3D spinal reconstructions and a fat/water separation MRI (fr...
Source: European Spine Journal - Category: Orthopaedics Source Type: research
Conclusions: Positive MARS-MRI can often occur in the absence of elevated metal ion levels; elevated blood metal ion levels do not mean MARS-MRI will be positive. All patients with MoM replacements were at risk. It is imperative to assess patients regularly for symptoms that may raise clinical suspicion and maintain a low threshold to performing MARS-MRI. PMID: 31788162 [PubMed - in process]
Source: Clinics in Orthopedic Surgery - Category: Orthopaedics Tags: Clin Orthop Surg Source Type: research
By SAURABH JHA, MD Slumdog TB No one knows who gave Rahul Roy tuberculosis. Roy’s charmed life as a successful trader involved traveling in his Mercedes C class between his apartment on the plush Nepean Sea Road in South Mumbai and offices in Bombay Stock Exchange. He cared little for Mumbai’s weather. He seldom rolled down his car windows – his ambient atmosphere, optimized for his comfort, rarely changed. Historically TB, or “consumption” as it was known, was a Bohemian malady; the chronic suffering produced a rhapsody which produced fine art. TB was fashionable in Victorian Britain...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: Artificial Intelligence Health Tech Saurabh Jha TB tuberculosis Source Type: blogs
The objective of this study is to investigate the changes in swallowing function after using an absorbable collagen biomembrane during anterior cervical spine surgery (ACSS). A prospective controlled study of patients who underwent two-level anterior cervical decompression and fusion (ACDF) with a zero-profile implant or single-level anterior cervical corpectomy and fusion (ACCF) with cage and plate fixation was performed in our hospital from January 2016. An absorbable collagen biomembrane was used after suturing the prevertebral fascia in the experimental groups. The thickness of prevertebral soft tissue (PST) was measur...
Source: Dysphagia - Category: Speech-Language Pathology Source Type: research
By AMEYA KULKARNI, MD When Samuel Morse left his New Haven home to paint a portrait of the Maquis du Lafayette in Washington DC, it was the last time he would see his pregnant wife. Shortly after his arrival in Washington, his wife developed complications during childbirth. A messenger took several days on horseback to relay the message to Mr Morse. Because the trip back to New Haven took several more, his wife had died by the time he arrived at their home.  So moved was he by the tragedy of lost time that he dedicated the majority of the rest of his life to make sure that this would never happen to anyone again. H...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: Health Policy Medical Practice Ameya Kulkarni Global Health Maternal mortality public health Source Type: blogs
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Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
ConclusionAdults with spastic diplegic CP who received their first orthopaedic intervention more than 15  years ago (based on ISA) showed similar incidence of spinal deformities as reported in the younger CP population, suggesting stability of spinal curvature into adulthood.Graphic abstractThese slides can be retrieved under Electronic Supplementary Material.
Source: European Spine Journal - Category: Orthopaedics Source Type: research
Conclusion: Use of graft if there is collapse on joint surface, early knee motion, and early started full weightbearing after surgical fixation of tibial plateau fracture is essential for successful outcome. Findings of osteoarthritis on X-rays are not related to poor functional outcome at the mid- to long-term follow-up of surgical treated tibial plateau fractured patients.
Source: Nigerian Journal of Clinical Practice - Category: Rural Health Authors: Source Type: research
Conclusion: Our study demonstrated that there was no difference in the means of both sides of femoral neck width and the intertrochanteric width of the left side. The correlations between PFG parameters showed that there was strong positive correlation that was significant apart from the right acetabular angle that did not correlate with other parameters.
Source: Nigerian Journal of Clinical Practice - Category: Rural Health Authors: Source Type: research
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