76
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Kwan J, Croke J, Bender J, Panzarella T, Ubhi K, Liu F, Fyles A, Koch A, Dinniwell R, Levin W, McCready D, Chung C. EP-1198: Low risk breast cancer patients’ supportive care needs and perceptions of follow-up care options. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31634-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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77
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Nadhan K, Shipman S, Buchanan E, Malat G, Doyle A, Chung C. 237 Cutaneous infection rates are not affected by chronic HIV(+) or HCV(+) coinfection in organ transplant recipients. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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78
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Nadhan K, Shaver C, Ogrich L, Abdelmalek M, Cusack C, Malat G, Doyle A, Chung C. 184 Marked racial differences in post-transplant diseases. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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79
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Park H, Cheon M, Kim S, Chung C. Temporal variations in presynaptic release probability in the lateral habenula. Sci Rep 2017; 7:40866. [PMID: 28106159 PMCID: PMC5247757 DOI: 10.1038/srep40866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 12/13/2016] [Indexed: 11/09/2022] Open
Abstract
Rhythmicity plays an important role in a number of biological systems. The habenular complex is reported to contain an intrinsic molecular clock and to show rhythmic expression of circadian clock genes and proteins including per2/PER2. In this study, we observed that there is a temporal rhythmicity in the presynaptic efficacy of the lateral habenula (LHb) neurons. We collected a substantial number of recordings at different time points of the day during the light phase. The frequency and amplitude of spontaneous excitatory transmission were increased in the afternoon compared to recordings performed in the morning. In addition, the paired-pulse ratio and the success rate of minimal stimulation were also significantly different depending on the time of the recording. We did not see any significant differences in recordings obtained from pyramidal neurons of the hippocampus in the same brain slices. Taken together, our data indicates that the LHb exhibits intrinsic temporal oscillation in basal neurotransmission and in presynaptic release probability. Given the rapidly growing interest on the function of the LHb, more careful examination of synaptic transmission in the LHb is thus required.
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Weidhaas J, Harris J, Schaue D, Chen A, Chin R, Axelrod R, El-Naggar A, Singh A, Galloway T, Raben D, Wang D, Matthiesen C, Avizonis V, Manon R, Yumen O, Nguyen-Tan P, Trotti A, Skinner H, Zhang Q, Sayre J, Ferris R, Sidransky D, Chung C. The KRAS-variant is a Biomarker of Cetuximab Response and Altered Immunity in Head and Neck Cancer: NRG Oncology/RTOG 0522. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.09.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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81
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Coolens C, Driscoll B, Foltz W, Chung C. SU-D-303-02: Impact of Arterial Input Function Selection and T10 Correction On DCE-MRI Tumour Response Prediction Using Compared to Volumetric DCE CT. Med Phys 2016. [DOI: 10.1118/1.4923889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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82
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Hu H, Liu H, Peng C, Deng T, Fu X, Chung C, Zhang E, Lu C, Zhang K, Liang Z, Yang Y. Clinical Experience of Non-Invasive Prenatal Chromosomal Aneuploidy Testing in 190,277 Patient Samples. Curr Mol Med 2016; 16:759-766. [DOI: 10.2174/1566524016666161013142335] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 09/29/2016] [Accepted: 10/02/2016] [Indexed: 11/22/2022]
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83
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Taunk N, Laughney A, Ghossein R, Lee N, Chung C, Bakhoum S. The Relationship of Numerical Chromosomal Instability With Clinical Characteristics and Outcomes in Head and Neck Cancers Treated With Multimodality Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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84
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Hahn E, Velazquez-Martin J, Somani S, Payne D, Waldron J, Krema H, Simpson R, Laperriere N, Chung C. Hypofractionated Palliative Radiation Therapy for Choroidal Metastases: Clinical Outcomes and Predictors of Overall Survival. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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85
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Dai Z, Cai W, Hu F, Lan Y, Li L, Chung C, Caughey B, Zhang K, Tang X. Plasma Mitochondrial DNA Levels as a Biomarker of Lipodystrophy Among HIV-infected Patients Treated with Highly Active Antiretroviral Therapy (HAART). Curr Mol Med 2016; 15:975-9. [PMID: 26592244 PMCID: PMC5403959 DOI: 10.2174/1566524016666151123114401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 10/28/2015] [Accepted: 11/18/2015] [Indexed: 11/22/2022]
Abstract
Lipodystrophy is a common complication in HIV-infected patients taking highly active antiretroviral therapy. Its early diagnosis is crucial for timely modification of antiretroviral therapy. We hypothesize that mitochondrial DNA in plasma may be a potential marker of LD in HIV-infected individuals. In this study, we compared plasma mitochondrial DNA levels in HIV-infected individuals and non-HIV-infected individuals to investigate its potential diagnostic value. Total plasma DNA was extracted from 67 HIV-infected patients at baseline and 12, 24 and 30 months after initiating antiretroviral therapy. Real-time quantitative PCR was used to determine the mitochondrial DNA levels in plasma. Lipodystrophy was defined by the physician-assessed presence of lipoatrophy or lipohypertrophy in one or more body regions. The mitochondrial DNA levels in plasma were significantly higher at baseline in HIV-infected individuals than in non-HIV-infected individuals (p<0.05). At month 30, 33 out of 67 patients (49.2%) showed at least one sign of lipodystrophy. The mean plasma mitochondrial DNA levels in lipodystrophy patients were significantly higher compared to those without lipodystrophy at month 24 (p<0.001). The receiver operating curve analysis demonstrated that using plasma mitochondrial DNA level (with cut-off value <5.09 log10 copies/ml) as a molecular marker allowed identification of patients with lipodystrophy with a sensitivity of 64.2% and a specificity of 73.0%. Our data suggest that mitochondrial DNA levels may help to guide therapy selection with regards to HIV lipodystrophy risk.
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86
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Ford J, Chung C, Leos M, Scholz H, Vogel J. Correlation between a new BioPlex® 2200 ToRC IgM assay and established commercial assays for the detection of IgM antibodies to T. gondii, rubella, and cytomegalovirus. J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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87
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Rodin D, Banihashemi B, Wang L, Lau A, Harris S, Levin W, Dinniwell R, Millar BA, Chung C, Laperriere N, Bezjak A, Wong RKS. The Brain Metastases Symptom Checklist as a novel tool for symptom measurement in patients with brain metastases undergoing whole-brain radiotherapy. ACTA ACUST UNITED AC 2016; 23:e239-47. [PMID: 27330360 DOI: 10.3747/co.23.2936] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE We evaluated the feasibility, reliability, and validity of the Brain Metastases Symptom Checklist (bmsc), a novel self-report measure of common symptoms experienced by patients with brain metastases. METHODS Patients with first-presentation symptomatic brain metastases (n = 137) referred for whole-brain radiotherapy (wbrt) completed the bmsc at time points before and after treatment. Their caregivers (n = 48) provided proxy ratings twice on the day of consultation to assess reliability, and at week 4 after wbrt to assess responsiveness to change. Correlations with 4 other validated assessment tools were evaluated. RESULTS The symptoms reported on the bmsc were largely mild to moderate, with tiredness (71%) and difficulties with balance (61%) reported most commonly at baseline. Test-retest reliability for individual symptoms had a median intraclass correlation of 0.59 (range: 0.23-0.85). Caregiver proxy and patient responses had a median intraclass correlation of 0.52. Correlation of absolute scores on the bmsc and other symptom assessment tools was low, but consistency in the direction of symptom change was observed. At week 4, change in symptoms was variable, with improvements in weight gain and sleep of 42% and 41% respectively, and worsening of tiredness and drowsiness of 62% and 59% respectively. CONCLUSIONS The bmsc captures a wide range of symptoms experienced by patients with brain metastases, and it is sensitive to change. It demonstrated adequate test-retest reliability and face validity in terms of its responsiveness to change. Future research is needed to determine whether modifications to the bmsc itself or correlation with more symptom-specific measures will enhance validity.
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88
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Nelson A, Cong Z, Chung C, Danby W. 302 E-cadherin expression is lost in hidradenitis suppurativa lesions. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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89
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Sandstrom H, Chung C, Gårding J, Toma-Dasu I. PO-0648: Pilot study in the assessment of contouring variability in stereotactic radiosurgery. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)31898-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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90
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Bae H, Park M, Jang B, Kang Y, Park J, Lee H, Chung H, Chung C, Hong S, Kwon Y, Yakobson BI, Lee H. High-throughput screening of metal-porphyrin-like graphenes for selective capture of carbon dioxide. Sci Rep 2016; 6:21788. [PMID: 26902156 PMCID: PMC4763268 DOI: 10.1038/srep21788] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 02/01/2016] [Indexed: 12/13/2022] Open
Abstract
Nanostructured materials, such as zeolites and metal-organic frameworks, have been considered to capture CO2. However, their application has been limited largely because they exhibit poor selectivity for flue gases and low capture capacity under low pressures. We perform a high-throughput screening for selective CO2 capture from flue gases by using first principles thermodynamics. We find that elements with empty d orbitals selectively attract CO2 from gaseous mixtures under low CO2 pressures (~10(-3) bar) at 300 K and release it at ~450 K. CO2 binding to elements involves hybridization of the metal d orbitals with the CO2 π orbitals and CO2-transition metal complexes were observed in experiments. This result allows us to perform high-throughput screening to discover novel promising CO2 capture materials with empty d orbitals (e.g., Sc- or V-porphyrin-like graphene) and predict their capture performance under various conditions. Moreover, these findings provide physical insights into selective CO2 capture and open a new path to explore CO2 capture materials.
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91
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Wong L, Chung C, Flores S, Mortimer J. Abstract P1-10-23: Bladder symptoms in women with newly diagnosed breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p1-10-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Changes in bladder function are recognized effects of aging and menopause but have not generally been reported in women treated for breast cancer. We initiated a prospective trial to assess the impact of (neo) adjuvant therapy on women with early stage breast cancer.
Methods: Women with newly diagnosed invasive breast cancer who were to initiate (neo) adjuvant chemotherapy or endocrine therapy were approached for study participation. At baseline a urinalysis, urine culture, and self assessment quality of life questionnaires were completed. The Urogenital Distress Inventory (UDI-6) assesses bladder symptoms and the Incontinence Impact Questionnaire (IIQ-7) assesses the impact of bladder symptoms on quality of life. Three months after initiation of (neo)adjuvant therapy, the quality of life questionnaires were repeated. We report the results of the pretreatment questionnaires.
Results: Between February and June, 2015, forty-nine women with newly diagnosed breast cancer were enrolled on study. The median age was 54 (Range 25-78); 21 were premenopausal and 28 postmenopausal. Twenty nine (59%) were treated in the adjuvant setting; 12 with chemotherapy and 17 with endocrine therapy. Twenty patients, (41%) were treated in the neoadjuvant setting with chemotherapy. Prior to initiation of therapy, " Frequent urination" was reported in 38 (65%), " Leakage related to urgency" in 5 ( 10%), " Leakage with physical activity" in 32 (55%) and "Small amounts of leakage" in 32 (55%). Bladder symptoms impacted the ability to perform household chores in 8 (16%), Physical recreation in 10 (20%), social activities in 9 (18%), and Emotional health in 5 (10%).
Conclusions: Symptoms of bladder dysfunction are common in women with newly diagnosed breast cancer even before therapy is initiated.
Citation Format: Wong L, Chung C, Flores S, Mortimer J. Bladder symptoms in women with newly diagnosed breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P1-10-23.
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92
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Coolens C, Foltz W, Driscoll B, Pellow C, Chung C. Comparison of Arterial Input Functions by Magnitude and Phase Signal Measurement in DCE MRI of brain cancer patients. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30056-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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93
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Zwald F, Leitenberger J, Zeitouni N, Soon S, Brewer J, Arron S, Bordeaux J, Chung C, Abdelmalek M, Billingsley E, Vidimos A, Stasko T. Recommendations for Solid Organ Transplantation for Transplant Candidates With a Pretransplant Diagnosis of Cutaneous Squamous Cell Carcinoma, Merkel Cell Carcinoma and Melanoma: A Consensus Opinion From the International Transplant Skin Cancer Collaborative (ITSCC). Am J Transplant 2016; 16:407-13. [PMID: 26820755 DOI: 10.1111/ajt.13593] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 10/09/2015] [Accepted: 10/14/2015] [Indexed: 01/25/2023]
Abstract
Advancements in solid organ transplantation successfully extend the lives of thousands of patients annually. The tenet of organ stewardship aims to prevent the futile expenditure of scarce donor organs in patient populations with high mortality risk, to the detriment of potential recipients with greater predicted life expectancy. The development of skin cancer posttransplantation portends tremendous morbidity, adversely affecting quality of life for many transplant recipients. This special article, provided by of members of the International Transplant Skin Cancer Collaborative (ITSCC), will provide the transplant professional with a consensus opinion and recommendations as to an appropriate wait period pretransplantation for transplant candidates with a history of either cutaneous squamous cell carcinoma, malignant melanoma, or Merkel cell carcinoma.
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Key Words
- cancer, malignancy, neoplasia
- clinical research, practice
- dermatology
- malignancy
- melanoma, cancer, malignancy, neoplasia
- metastatic disease
- neoplasia
- organ transplantation in general
- risk factors, cancer, malignancy, neoplasia
- skin, nonmelanoma, cancer
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Pfahl K, Chung C, Singleton MD, Shuck KM, Go YY, Zhang J, Campos J, Adams E, Adams DS, Timoney PJ, Balasuriya UBR. Further evaluation and validation of a commercially available competitive ELISA (cELISA) for the detection of antibodies specific to equine arteritis virus (EAV). Vet Rec 2016; 178:95. [DOI: 10.1136/vr.103362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2015] [Indexed: 11/03/2022]
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95
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Kim KC, Rhee J, Park JE, Lee DK, Choi CS, Kim JW, Lee HW, Song MR, Yoo HJ, Chung C, Shin CY. Overexpression of Telomerase Reverse Transcriptase Induces Autism-like Excitatory Phenotypes in Mice. Mol Neurobiol 2015; 53:7312-7328. [DOI: 10.1007/s12035-015-9630-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 12/15/2015] [Indexed: 12/27/2022]
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96
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Lee SY, Park SH, Chung C, Kim JJ, Choi SY, Han JS. Oxytocin Protects Hippocampal Memory and Plasticity from Uncontrollable Stress. Sci Rep 2015; 5:18540. [PMID: 26688325 PMCID: PMC4685249 DOI: 10.1038/srep18540] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 11/20/2015] [Indexed: 11/24/2022] Open
Abstract
The hippocampus is vulnerable to uncontrollable stress and is enriched with oxytocin receptors, but their interactive influences on hippocampal functioning are unknown. This study aimed to determine the effects of intranasal oxytocin administration on stress-induced alterations in synaptic plasticity and spatial memory in male rats. While vehicle-administered stressed rats showed impairment in long-term potentiation, enhancement in long-term depression, and weakened spatial memory, these changes were not observed in oxytocin-administered stressed rats. To reveal the potential signaling mechanism mediating these effects, levels of phosphorylated extracellular signal-regulated kinases (pERK) in the hippocampus was examined. Western blotting showed that oxytocin treatment blocked stress-induced alterations of pERK. Additionally, the oxytocin receptor antagonist L-368,899 inhibited the oxytocin’s protective effects on hippocampal memory to stress. Thus, intranasal administration of oxytocin reduced stress effects on hippocampal synaptic plasticity and memory in rats via acting on oxytocin receptors and regulating ERK activity. This study suggests that exogenous oxytocin may be a therapeutically effective means to counter the detrimental neurocognitive effects of stress.
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Kim HJ, Shin EJ, Lee BH, Choi SH, Jung SW, Cho IH, Hwang SH, Kim JY, Han JS, Chung C, Jang CG, Rhim H, Kim HC, Nah SY. Oral Administration of Gintonin Attenuates Cholinergic Impairments by Scopolamine, Amyloid-β Protein, and Mouse Model of Alzheimer's Disease. Mol Cells 2015; 38:796-805. [PMID: 26255830 PMCID: PMC4588723 DOI: 10.14348/molcells.2015.0116] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/22/2015] [Accepted: 06/29/2015] [Indexed: 12/25/2022] Open
Abstract
Gintonin is a novel ginseng-derived lysophosphatidic acid (LPA) receptor ligand. Oral administration of gintonin ameliorates learning and memory dysfunctions in Alzheimer's disease (AD) animal models. The brain cholinergic system plays a key role in cognitive functions. The brains of AD patients show a reduction in acetylcholine concentration caused by cholinergic system impairments. However, little is known about the role of LPA in the cholinergic system. In this study, we used gintonin to investigate the effect of LPA receptor activation on the cholinergic system in vitro and in vivo using wild-type and AD animal models. Gintonin induced [Ca(2+)]i transient in cultured mouse hippocampal neural progenitor cells (NPCs). Gintonin-mediated [Ca(2+)]i transients were linked to stimulation of acetylcholine release through LPA receptor activation. Oral administration of gintonin-enriched fraction (25, 50, or 100 mg/kg, 3 weeks) significantly attenuated scopolamine-induced memory impairment. Oral administration of gintonin (25 or 50 mg/kg, 2 weeks) also significantly attenuated amyloid-β protein (Aβ)-induced cholinergic dysfunctions, such as decreased acetylcholine concentration, decreased choline acetyltransferase (ChAT) activity and immunoreactivity, and increased acetylcholine esterase (AChE) activity. In a transgenic AD mouse model, long-term oral administration of gintonin (25 or 50 mg/kg, 3 months) also attenuated AD-related cholinergic impairments. In this study, we showed that activation of G protein-coupled LPA receptors by gintonin is coupled to the regulation of cholinergic functions. Furthermore, this study showed that gintonin could be a novel agent for the restoration of cholinergic system damages due to Aβ and could be utilized for AD prevention or therapy.
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98
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Park H, Yu JE, Kim S, Nahm SS, Chung C. Decreased Na(+) influx lowers hippocampal neuronal excitability in a mouse model of neonatal influenza infection. Sci Rep 2015; 5:13440. [PMID: 26310542 PMCID: PMC4550875 DOI: 10.1038/srep13440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 07/30/2015] [Indexed: 02/03/2023] Open
Abstract
Influenza virus infection is one of common infectious diseases occurring worldwide. The human influenza virus can infect the central nervous system and cause brain dysfunctions affecting cognition and spatial memory. It has been previously shown that infection with the influenza viral protein within the hippocampus decreases Ca(2+) influx and reduces excitatory postsynaptic currents. However, the neuronal properties of animals surviving neonatal infection have not been investigated. Using a mouse model of neonatal influenza infection, we performed thorough electrophysiological analyses of hippocampal neurotransmission. We found that animals surviving the infection exhibited reduced spontaneous transmission with no significant defects in evoked neurotransmission. Interestingly, the hippocampus of the infected group conducted synaptic transmission with less fidelity upon repeated stimulations and failed to generate action potentials faithfully upon step current injections primarily due to reduced Na(+) influx. The reversal potential for the Na(+) current was hyperpolarized and the activation of Na(+) channels was slower in the infected group while the inactivation process was minimally disturbed. Taken together, our observations suggest that neonatally infected offsprings exhibit noticeable deficits at rest and severe failures when higher activity is required. This study provides insight into understanding the cellular mechanisms of influenza infection-associated functional changes in the brain.
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99
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Chung C, Luciano M, John S, Kosmorsky G, Lystad L, Hui F. E-068 transverse sinus configurations in pseudotumor cerebri patients without elevated pressure gradients. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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100
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Chung C, Wunderle K, John S, Hui F. E-090 superior radiation dose reduction in modern siemens bi-plane angiography units. J Neurointerv Surg 2015. [DOI: 10.1136/neurintsurg-2015-011917.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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