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Quantum limits of position-sensitive photodiodes. OPTICS EXPRESS 2022; 30:39374-39381. [PMID: 36298891 DOI: 10.1364/oe.471673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
The split photodiode and the lateral effect photodiode are two popular detectors for measuring beam displacement. For small displacements of a Gaussian beam, which is the case of interest here, they are often seen as equivalent and used interchangeably, giving a signal proportional to the displacement. We show theoretically and experimentally that in the limit of low technical noise, where the signal to noise ratio is dominated by the shot noise of the light, the lateral effect photodiode produces a better signal to noise ratio than the split photodiode, owing to its optimum spatial detector response. This quantum advantage can be practically exploited in spite of the intrinsic thermal noise of the lateral effect photodiode.
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464 Local Extension of a Solitary Extra Medullary Nasal Plasmacytoma into the Orbit. Br J Surg 2022. [PMCID: PMC9452088 DOI: 10.1093/bjs/znac269.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Aim Method Results Conclusions
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Disseminated BCGosis following Systemic Absorption of Mycobacterium Bovis. IRISH MEDICAL JOURNAL 2022; 115:641. [PMID: 36301237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Effect of Initial Knee angle and Arm Facilitation on biomechanics of the Sit-to-Stand movement. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:4155-4158. [PMID: 36086603 DOI: 10.1109/embc48229.2022.9871567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Spinal cord injuries cause loss of muscle function and subsequently reduce independence. Therapeutic interventions such as transcutaneous spinal cord stimulation are increasingly being used to help improve motor functioning however, a comprehensive understanding of the biomechanical elements of movement may help optimize stimulation protocols. Twenty healthy participants completed five sit-to-stand (STS) transitions while initial knee angle and arm facilitation were altered. Electromyography (EMG) activation of four lower limb muscles and centre of pressure dynamics were recorded. Acute initial knee angles resulted in a change in duration of phases within the STS, and restrictive arm positioning caused the time to completion to increase (p=0.04). Muscle activation patterns across phases were compared and showed significant differences between phases in both the Tibialis Anterior and Rectus Femoris (p<0.006). Acute initial knee angles were also found to significantly increase Biceps Femoris activation across multiple phases (p=0.034). Altering the starting position and limb movement result in vastly different temporal and muscular strategies to complete the STS. Thus, joint angle and upper limb facilitation should be considered when designing rehabilitative interventions for clinical cohorts.
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Selectivity of upper limb posterior root muscle reflexes via cervicothoracic spinal cord stimulation. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2022; 2022:3077-3080. [PMID: 36085735 DOI: 10.1109/embc48229.2022.9871841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Recent studies have reported that transcutaneous spinal stimulation (tSCS) may facilitate improved upper limb motor function in those with incomplete tetraplesia. However, little is known about how tSCS engages upper limb motor pools. This study aimed to explore the extent to which discrete upper limb motor pools can be selectively engaged via altering stimulus location and intensity. 14 participants with intact nervous systems completed two test visits, during which posterior root-muscle reflexes (PRMR) were evoked via a 3x3 cathode matrix applied over the cervicothoracic spine. An incremental recruitment curve at C7 vertebral level was initially performed to attain minimal threshold intensity (MTI) in each muscle. Paired pulses (1ms square monophasic with inter-pulse interval of 50ms) were subsequently delivered at a frequency of 0.25Hz at two intensities (MTI and [Formula: see text]) across all nine locations. in a random order. Evoked response to the 1st (PRMR1) and 2nd (PRMR2) stimuli were recorded from four upper limb muscles. A significant effect of spinal level was observed in all muscles for PRMR1 with greater responses recorded more caudally. Unexpectedly, contralateral cathode placement significantly increased PRMR1 in Biceps Brachii (P=0.012), Flexor Carpi Radialis (P=0.035) and Abductor Pollicis Brevis (P=0.001). Post-activation depression (PAD) was also significantly increased with contralateral cathode placement in Biceps Brachii (P=0.001), Triceps Brachii (P=0.012) and Flexor Carpi Radialis (P=0.001). These results suggest that some level of unilateral motor pool selectivity may be attained via altering stimulus intensity and location during cervicothoracic tSCS.
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POS-183 NEPHROCHECK AKI RISK SCORES IN PREGNANT AND NON-PREGNANT HEALTHY WOMEN. Kidney Int Rep 2021. [DOI: 10.1016/j.ekir.2021.03.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Abstract
The effects of COVID-19 have the potential to impact on the management of chronic diseases including osteoporosis. A global survey has demonstrated that these impacts include an increase in telemedicine consultations, delays in DXA scanning, interruptions in the supply of medications and reductions in parenteral medication delivery. INTRODUCTION The COVID-19 pandemic has had profound effects on the health of the global population both directly, via the sequelae of the infection, and indirectly, including the relative neglect of chronic disease management. Together the International Osteoporosis Foundation and National Osteoporosis Foundation sought to ascertain the impact on osteoporosis management. METHODS Questionnaires were electronically circulated to a sample of members of both learned bodies and included information regarding the location and specialty of respondents, current extent of face to face consultations, alterations in osteoporosis risk assessment, telemedicine experience, alterations to medication ascertainment and delivery and electronic health record (EHR) utilisation. Responses were collected, quantitative data analysed, and qualitative data assessed for recurring themes. RESULTS Responses were received from 209 healthcare workers from 53 countries, including 28% from Europe, 24% from North America, 19% from the Asia Pacific region, 17% from the Middle East and 12% from Latin America. Most respondents were physicians (85%) with physician assistants, physical therapists and nurses/nurse practitioners represented in the sample. The main three specialties represented included rheumatology (40%), endocrinology (22%) and orthopaedics (15%). In terms of the type of patient contact, 33% of respondents conducted telephone consultations and 21% video consultations. Bone mineral density assessment by dual-energy X-ray absorptiometry (DXA) usage was affected with only 29% able to obtain a scan as recommended. The majority of clinicians (60%) had systems in place to identify patients receiving parenteral medication, and 43% of clinicians reported difficulty in arranging appropriate osteoporosis medications during the COVID-19 crisis. CONCLUSIONS To conclude through surveying a global sample of osteoporosis healthcare professionals, we have observed an increase in telemedicine consultations, delays in DXA scanning, interrupted supply of medications and reductions in parenteral medication delivery.
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Abstract
A Correction to this paper has been published: 10.1007/s00198-021-05905-7
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Considerations for the design and conduct of human gut microbiota intervention studies relating to foods. Eur J Nutr 2020; 59:3347-3368. [PMID: 32246263 PMCID: PMC7669793 DOI: 10.1007/s00394-020-02232-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/18/2020] [Indexed: 12/15/2022]
Abstract
With the growing appreciation for the influence of the intestinal microbiota on human health, there is increasing motivation to design and refine interventions to promote favorable shifts in the microbiota and their interactions with the host. Technological advances have improved our understanding and ability to measure this indigenous population and the impact of such interventions. However, the rapid growth and evolution of the field, as well as the diversity of methods used, parameters measured and populations studied, make it difficult to interpret the significance of the findings and translate their outcomes to the wider population. This can prevent comparisons across studies and hinder the drawing of appropriate conclusions. This review outlines considerations to facilitate the design, implementation and interpretation of human gut microbiota intervention studies relating to foods based upon our current understanding of the intestinal microbiota, its functionality and interactions with the human host. This includes parameters associated with study design, eligibility criteria, statistical considerations, characterization of products and the measurement of compliance. Methodologies and markers to assess compositional and functional changes in the microbiota, following interventions are discussed in addition to approaches to assess changes in microbiota-host interactions and host responses. Last, EU legislative aspects in relation to foods and health claims are presented. While it is appreciated that the field of gastrointestinal microbiology is rapidly evolving, such guidance will assist in the design and interpretation of human gut microbiota interventional studies relating to foods.
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Association of Visceral Adipose Tissue and Subclinical Atherosclerosis in US-Born Mexican Americans but not First Generation Immigrants. J Am Heart Assoc 2020; 9:e017373. [PMID: 33054499 PMCID: PMC7763390 DOI: 10.1161/jaha.120.017373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background Excess visceral adipose tissue (VAT) is a primary driver for the cardiometabolic complications of obesity; VAT-associated cardiovascular disease risk varies by race, but most studies have been done on Non-Hispanics. This study aimed to evaluate the clinical and metabolic correlates of VAT, its association with subclinical atherosclerosis, and the factors affecting this association in Mexican Americans. Methods and Results Participants (n=527) were drawn from the Cameron County Hispanic Cohort (CCHC), on whom a carotid ultrasound to assess carotid intima media thickness and a dual-energy X-ray absorptiometry scan to assess for VAT were obtained. Those in the highest quartiles of VAT were more likely to have hypertension, hypertriglyceridemia, low high-density lipoprotein, diabetes mellitus, and metabolic syndrome. Increased carotid intima media thickness was more prevalent in those in the highest quartile for VAT (57.4% versus 15.4% for the lowest quartile; P<0.001). There was a graded increase in mean carotid intima media thickness with increasing VAT, after adjusting for covariates; for every 10 cm2 increase in VAT, there was an increase of 0.004 mm (SE=0.002; P=0.0299) in mean carotid intima media thickness. However, this association was only seen among second or higher generation US-born Mexican Americans but not among first generation immigrants (P=0.024). Conclusions Excess VAT is associated with indicators of metabolic disorders and subclinical atherosclerosis in Mexican Americans regardless of body mass index. However, acculturation appears to be an important modulator of this association. Longitudinal follow-up with targeted interventions among second or higher generation Hispanics to lower VAT and improve cardiometabolic risk may help prevent premature cardiovascular disease in this cohort.
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Transcatheter and surgical aortic valve replacement impact on outcomes and cancer treatment schedule. Int J Cardiol 2020; 326:62-70. [PMID: 32858137 DOI: 10.1016/j.ijcard.2020.08.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/01/2020] [Accepted: 08/19/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Recent data suggest that transcatheter aortic valve replacement (TAVR) for the treatment of severe aortic stenosis (AS) is viable in cancer patients. TAVR may be preferred in cancer patients due to its minimally invasive nature and smaller impact on oncologic therapies compared to SAVR. Objectives We sought to determine if TAVR is an acceptable alternative to SAVR in cancer patients and whether TAVR allows for earlier initiation or resumption of anti-cancer therapies. METHODS Cancer patients in a tertiary cancer center diagnosed with severe AS were retrospectively included. Patients accepted by the heart team underwent either TAVR or SAVR, while remaining patients received medical therapy alone. Time intervals to initiation of cancer treatment and the impact of cancer treatment on the replaced valves were recorded. Logistic regression was performed to determine the impact of treatment strategy on overall survival (OS) in all 3 subgroups. RESULTS One hundred and eighty-seven cancer patients diagnosed with severe AS were identified. AVR was associated with better OS compared to medical therapy alone (p < 0.0001). TAVR was associated with better OS at 72 months (HR = 0.468, p < 0.001) compared to medical therapy alone, with no difference in OS observed between SAVR and TAVR. Time intervals to initiation of cancer treatments were shorter in the TAVR group, with no valve deterioration or infection observed in all groups. CONCLUSION Cancer patients with severe AS benefit from AVR. TAVR is a viable alternative to SAVR in high-risk cancer patients to prolong survival and allow for earlier administration or resumption of anti-neoplastic therapies.
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Identifying Hemostatic Thresholds in Cancer Patients Undergoing Coronary Angiography Based on Platelet Count and Thromboelastography. Front Cardiovasc Med 2020; 7:9. [PMID: 32118047 PMCID: PMC7033624 DOI: 10.3389/fcvm.2020.00009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/21/2020] [Indexed: 11/13/2022] Open
Abstract
Objectives: To evaluate the role of platelet count and thromboelastogram (TEG) in the treatment of thrombocytopenic cancer patients with suspected coronary artery disease (CAD). Background: Cancer patients with CAD and thrombocytopenia are often treated non-invasively (i.e., without coronary angiography when clinically indicated) due to perceived high risk of bleeding. We sought to evaluate coagulability based on TEG and determine if platelet count and TEG could predict bleeding risk/mortality among cancer patients undergoing coronary angiography (CA). Methods: Baseline demographics, platelet count, and TEG parameters were recorded among cancer patients that underwent CA and had a concomitant TEG. Logistic regression and univariate proportional hazards regression analysis were performed to determine the impact of platelet count and coagulability on 24-month overall survival (OS). Results: All patients with platelet count <20,000/mm3 and nearly all patients with platelet count 20,000–49,000/mm3 were hypocoagulable based on TEG results. In contrast, nearly all patients with platelet counts of 50,000–99,999/mm3 had normal TEG results and OS similar to those with platelet counts of ≥100,000/mm3. Coagulability based on TEG was not associated with OS. However, a platelet count of <50,000/mm3 was associated with worse 24-month OS (hazard ratio = 2.76; p = 0.0072) when compared with a platelet count of ≥100,000/mm3. No major bleeding complications were observed in all groups. Conclusion: The majority of cancer patients with platelet counts of <50,000/mm3 were hypocoagulable based on TEG and had worse OS at 24 months. The relatively normal TEGs in the >50,000/mm3 groups, as well as the improved survival, suggest that with appropriate clinical indication and risk/benefit assessment, a cut-off of 50,000/mm3 platelets can be considered for CA in cancer patients.
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Abstract
Erdheim-Chester disease is a rare infiltrative histiocytic disorder with around 800 cases being reported worldwide. Patients most commonly present with skeletal pain, but the condition has been shown to affect multiple other organs. We describe a rare presentation in which the disease infiltrated the sinuses and affected an ex-RAF pilot's vision. After extensive investigation of the elusive diagnosis, repeating of a molecular test using polymerase chain reaction analysis allowed for identification of a mutation (BRAF V600) ultimately leading to the diagnosis of Erdheim-Chester disease.
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P678Pericardiocentesis in thrombocytopenic cancer patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pericardial effusion is a known complication in cancer patients, resulting in chest pain, cardiac tamponade, and cardiogenic shock. Although technological advances allow for early detection, treatment options are limited for those also suffering from thrombocytopenia.
Purpose
Our study aims to evaluate survivorship of thrombocytopenic cancer patients who underwent pericardiocentesis.
Methods
From 2008 to 2019, we assessed overall mortality and follow-up post-pericardiocentesis in cancer patients with concurrent thrombocytopenia (<150,000 cells/microliter) at our cancer center. Thrombocytopenia grading was determined on the procedure day via serology platelet cell count with the following thresholds: Grade 1 (<50x103 cells/mL), Grade 2 (51–100x103 cells/mL), and Grade 3 (101–149x103 cells/mL).
Results
In 137 patients, we identified 65 (47%) patients with Grade 1, 30 (22%) with Grade 2, and 42 (31%) with Grade 3 thrombocytopenia. The calculated platelet count average was 66x103 cells/mL, median was 59x103 cells/mL, and range was 6 to 147x103 cells/mL. Of note, 7 (5%) patients had platelets <10x103 cells/mL. One patient developed a hematoma at the percutaneous site of pericardial drain, no other complications were noted. Kaplan Meier survival analysis by log-rank (mantel-cox) showed statistical significance (p=0.025). Comparatively, the cumulative survival of patients at 30 days was 63% in Grade 1, 67% in Grade 2, and 83% in Grade 3 patients. At one year, it was 26% in Grade 1, 37% in Grade 2, and 48% in Grade 3 patients.
Conclusion
Pericardiocentesis offers rapid symptomatic relief and can be life-saving in cardiac tamponade. In cancer patients, the development of pericardial effusions and thrombocytopenia increases due to the underlying malignancy and cancer therapeutics. Although thrombocytopenia is thought to increase peri-procedural risks, in this cohort there was only one minor complication and this occurred in Grade 2 thrombocytopenia. For thrombocytopenic cancer patients suffering from large pericardial effusions, high pre-operative risk scores often exclude them from receiving surgical pericardial windows. Although mortality was higher in severe thrombocytopenia, this is likely due to the competing risk of more severe cancer; there were no complications with Grade 1 thrombocytopenia. Especially noteworthy, no complications in those with platelets <10,000 cells/uL. Our study shows that in this population of patients, pericardiocentesis is a feasible intervention with low complication rate to help improve quality of life and potentially life-saving treatment.
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919 Overexpression of cyclooxygenase-2 in the skin of adult transgenic mice leads to sebaceous gland hyperplasia and thinning of hair shafts. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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CORONARY ANGIOGRAPHY AMONG CANCER PATIENTS: DETERMINING A SAFE PLATELET THRESHOLD. J Am Coll Cardiol 2019. [DOI: 10.1016/s0735-1097(19)31896-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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DGH experience of implementing NOLCP: day –3 to 0. Lung Cancer 2019. [DOI: 10.1016/s0169-5002(19)30107-2] [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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Comparison of three commercially available placental growth factor-based tests in women with suspected preterm pre-eclampsia: the COMPARE study. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2019; 53:62-67. [PMID: 29575304 PMCID: PMC6588004 DOI: 10.1002/uog.19051] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/25/2018] [Accepted: 03/03/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To compare the performance of three placental growth factor (PlGF)-based tests in predicting delivery within 14 days from testing in women with suspected preterm pre-eclampsia before 35 weeks' gestation. METHODS This was a retrospective analysis of samples collected from three prospective pregnancy cohort studies. Participants were pregnant women with suspected preterm pre-eclampsia recruited in tertiary maternity units in the UK and Ireland. Samples were analyzed simultaneously according to the manufacturers' directions. The tests compared were the DELFIA Xpress PlGF 1-2-3 test, the Triage PlGF test and the Elecsys immunoassay soluble fms-like tyrosine kinase-1 (sFlt-1)/PlGF ratio. Areas under receiver-operating characteristics curves (AUCs) were compared. The main outcome measure was detection of a difference of 0.05 in AUC between tests for delivery within 14 days of testing. RESULTS Plasma samples from 396 women and serum samples from 244 women were assayed. In predicting delivery within 14 days secondary to suspected pre-eclampsia prior to 35 weeks' gestation, no significant differences were observed in AUCs (P = 0.795), sensitivities (P = 0.249), positive predictive values (P = 0.765) or negative predictive values (P = 0.920) between the three tests. The specificity of the Elecsys sFlt-1/PlGF ratio test was higher than that of the other two tests (P < 0.001). CONCLUSIONS The tests perform similarly in their prediction of need for delivery within 14 days in women with suspected pre-eclampsia. The high negative predictive values support the role of PlGF-based tests as 'rule-out' tests for pre-eclampsia. © 2018 Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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PSV-11 A comparison of meiotic recombination in spermatocytes of cattle and sheep from the United States and Czech Republic. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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PSXIV-7 Transcriptomic analysis of varying immune responses in BVDV challenged cattle. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Frequency of Nonalcoholic Fatty Liver Disease and Subclinical Atherosclerosis Among Young Mexican Americans. Am J Cardiol 2017; 119:1717-1722. [PMID: 28395890 DOI: 10.1016/j.amjcard.2017.03.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 02/08/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is considered as the hepatic manifestation of the metabolic syndrome, whose criteria are risk factors for atherosclerotic cardiovascular disease. We aimed to evaluate the prevalence of NAFLD, its association with subclinical atherosclerosis, and factors that may account for this association in Mexican Americans. In a population-based cross-sectional sample drawn from the Cameron County Hispanic Cohort in Texas, carotid intima media thickness (cIMT), an indicator of subclinical atherosclerosis, was measured. Abnormal carotid ultrasound study was defined as mean cIMT >75th percentile for age and gender and/or plaque presence. NAFLD was defined as steatosis by ultrasound in the absence of other causes of liver disease. Multivariable weighted regression analyses were performed to evaluate associations between NAFLD and cIMT. Mean age was 50.4 ± 1.2 years with 58.3% women. Mean body mass index was 31.0 ± 0.4 kg/m2, and 54.0% had the metabolic syndrome. NAFLD was highly prevalent (48.80%); subjects with NAFLD had greater body mass index, central obesity, fasting glucose levels, and dyslipidemia and were more likely to have the metabolic syndrome. Nearly 1/3 of subjects with NAFLD also had evidence of subclinical atherosclerosis (31.2%). After adjusting for covariates, there was an independent association between NAFLD and increased cIMT only in younger subjects <45 years (p = 0.0328). Subjects with both abnormal liver and carotid ultrasound studies tended to be obese, diabetic and have the metabolic syndrome. In conclusion, NAFLD is highly prevalent in this Mexican American cohort, with an independent association between NAFLD and subclinical atherosclerosis among younger subjects; clustering of diabetes, obesity, and metabolic syndrome in this health disparity cohort increases the risk of both liver disease and early atherosclerosis in young adults.
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ANALGESIC EFFECT OF 4 PROTOCOLS OF EPIDURAL ANAESTHESIA IN CANINES UNDERGOING ROUTINE OVARIOHISTERECTOMY. COMPENDIO DE CIENCIAS VETERINARIAS 2016. [DOI: 10.18004/compend.cienc.vet.2016.06.02.13-19] [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] Open
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The Renal Outer Medullary Potassium Channel Inhibitor, MK-7145, Lowers Blood Pressure, and Manifests Features of Bartters Syndrome Type II Phenotype. ACTA ACUST UNITED AC 2016; 359:194-206. [DOI: 10.1124/jpet.116.235150] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/14/2016] [Indexed: 12/13/2022]
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A comprehensive review of the sub-axial ligaments of the vertebral column: part I anatomy and function. Childs Nerv Syst 2015; 31:1037-59. [PMID: 25930727 DOI: 10.1007/s00381-015-2729-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 04/20/2015] [Indexed: 11/25/2022]
Abstract
BACKGROUND As important as the vertebral ligaments are in maintaining the integrity of the spinal column and protecting the contents of the spinal canal, a single detailed review of their anatomy and function is missing in the literature. METHODS A literature search using online search engines was conducted. RESULTS Single comprehensive reviews of the spinal ligaments are not found in the extant medical literature. CONCLUSIONS This review will be useful to those who treat patients with pathology of the spine or who interpret imaging or investigate the anatomy of the ligaments of the vertebral column.
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Bilingualism and cochlear implants--issues and answers? Adv Otorhinolaryngol 2015; 50:177-85. [PMID: 7610957 DOI: 10.1159/000424456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Improved upper limits on the stochastic gravitational-wave background from 2009-2010 LIGO and Virgo data. PHYSICAL REVIEW LETTERS 2014; 113:231101. [PMID: 25526109 DOI: 10.1103/physrevlett.113.231101] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Indexed: 06/04/2023]
Abstract
Gravitational waves from a variety of sources are predicted to superpose to create a stochastic background. This background is expected to contain unique information from throughout the history of the Universe that is unavailable through standard electromagnetic observations, making its study of fundamental importance to understanding the evolution of the Universe. We carry out a search for the stochastic background with the latest data from the LIGO and Virgo detectors. Consistent with predictions from most stochastic gravitational-wave background models, the data display no evidence of a stochastic gravitational-wave signal. Assuming a gravitational-wave spectrum of Ω_{GW}(f)=Ω_{α}(f/f_{ref})^{α}, we place 95% confidence level upper limits on the energy density of the background in each of four frequency bands spanning 41.5-1726 Hz. In the frequency band of 41.5-169.25 Hz for a spectral index of α=0, we constrain the energy density of the stochastic background to be Ω_{GW}(f)<5.6×10^{-6}. For the 600-1000 Hz band, Ω_{GW}(f)<0.14(f/900 Hz)^{3}, a factor of 2.5 lower than the best previously reported upper limits. We find Ω_{GW}(f)<1.8×10^{-4} using a spectral index of zero for 170-600 Hz and Ω_{GW}(f)<1.0(f/1300 Hz)^{3} for 1000-1726 Hz, bands in which no previous direct limits have been placed. The limits in these four bands are the lowest direct measurements to date on the stochastic background. We discuss the implications of these results in light of the recent claim by the BICEP2 experiment of the possible evidence for inflationary gravitational waves.
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The effects of temperature and innate immunity on transmission of Campylobacter jejuni (Campylobacterales: Campylobacteraceae) between life stages of Musca domestica (Diptera: Muscidae). JOURNAL OF MEDICAL ENTOMOLOGY 2014; 51:670-677. [PMID: 24897861 DOI: 10.1603/me13220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The house fly (Musca domestica L.) is a well-established vector of human pathogens, including Campylobacter spp., which can cause infection of broiler chicken flocks, and through contaminated broiler meat can cause outbreaks of campylobacteriosis in humans. We investigated whether Campylobacter jejuni (Jones) could be transferred between life stages of M. domestica (larvae-pupae-adults) and determined bacterial counts of C. jejuni at different time points after bacterial exposure. C. jejuni was transmitted from infected larvae to pupae, but not to the adult stage. Infected larvae maintained at 25 degrees C had mean bacterial numbers of 6.5 +/- 0.2 SE log10 (colony forming units [CFU]/g) that subsequently dropped to 3.6 +/- 0.3 SE log10 (CFU/g) 8 h after infection. Pupae originating from infected larvae contained mean bacterial numbers of 5.3 +/- 0.1 SE log10 (CFU/g), and these numbers dropped to 4.8 +/- 0.1 SE log10 (CFU/g) 24 h after pupation. The decline in C. jejuni numbers during pupal development coincided with increased expression of antimicrobial peptides, including cecropin, diptericin, attacin, and defensin, in the larva-pupa transition stage and a later second peak in older pupae (4 or 48 h). Conversely, there was a reduced expression of the digestive enzyme, lysozyme, in pupae and adults compared with larvae.
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Constraints on cosmic strings from the LIGO-Virgo gravitational-wave detectors. PHYSICAL REVIEW LETTERS 2014; 112:131101. [PMID: 24745400 DOI: 10.1103/physrevlett.112.131101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Indexed: 06/03/2023]
Abstract
Cosmic strings can give rise to a large variety of interesting astrophysical phenomena. Among them, powerful bursts of gravitational waves (GWs) produced by cusps are a promising observational signature. In this Letter we present a search for GWs from cosmic string cusps in data collected by the LIGO and Virgo gravitational wave detectors between 2005 and 2010, with over 625 days of live time. We find no evidence of GW signals from cosmic strings. From this result, we derive new constraints on cosmic string parameters, which complement and improve existing limits from previous searches for a stochastic background of GWs from cosmic microwave background measurements and pulsar timing data. In particular, if the size of loops is given by the gravitational backreaction scale, we place upper limits on the string tension Gμ below 10(-8) in some regions of the cosmic string parameter space.
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A new code for parameter estimation in searches for gravitational waves from known pulsars. ACTA ACUST UNITED AC 2012. [DOI: 10.1088/1742-6596/363/1/012041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Effect of Dopamine Agonist Medications on Blood Pressure in Early Parkinson's Disease (P06.084). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p06.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Publisher’s Note: Search for gravitational waves from compact binary coalescence in LIGO and Virgo data from S5 and VSR1 [Phys. Rev. D82, 102001 (2010)]. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.85.089903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Directional limits on persistent gravitational waves using LIGO S5 science data. PHYSICAL REVIEW LETTERS 2011; 107:271102. [PMID: 22243300 DOI: 10.1103/physrevlett.107.271102] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Indexed: 05/31/2023]
Abstract
The gravitational-wave (GW) sky may include nearby pointlike sources as well as stochastic backgrounds. We perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sources. Finding no evidence to support the detection of GWs, we present 90% confidence level (C.L.) upper-limit maps of GW strain power with typical values between 2-20×10(-50) strain(2) Hz(-1) and 5-35×10(-49) strain(2) Hz(-1) sr(-1) for pointlike and extended sources, respectively. The latter result is the first of its kind. We also set 90% C.L. limits on the narrow-band root-mean-square GW strain from interesting targets including Sco X-1, SN 1987A and the Galactic center as low as ≈7×10(-25) in the most sensitive frequency range near 160 Hz.
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A Concise and Convergent Synthesis of Luotonin B and E. Synlett 2010. [DOI: 10.1055/s-0030-1259098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Working with The Campbell Collaboration to produce reviews of relevance to public health across the education, justice and social welfare sectors. J Public Health (Oxf) 2010; 32:138-40. [DOI: 10.1093/pubmed/fdp130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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P2.131 Rate of antiparkinsonian medication increase after bilateral deep brain stimulation of the subthalamic nucleus. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70482-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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A high-resolution radiation hybrid map of sheep chromosome X and comparison with human and cattle. Cytogenet Genome Res 2009; 125:40-5. [PMID: 19617695 DOI: 10.1159/000207520] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2009] [Indexed: 11/19/2022] Open
Abstract
A radiation hybrid (RH) map of sheep X chromosome (Ovisaries; OARX) containing 146 physically anchored loci was generated in this study, providing information for comparative X chromosome analysis between the maps of sheep, human, and cattle. Primers typed on the USUoRH5000 ovine whole-genome radiation hybrid panel were designed from sequences predicted to be on the ovine X chromosome, based on comparative mapping within the virtual sheep genome browser (v1.2). The resulting RH map for the ovine X chromosome consists of 4 linkage groups composed of 76 BAC end sequences (BES), 28 gene loci that were confirmed within ovine BAC clones in the CHORI-243 ovine BAC library, 28 additional gene loci from the ovine comparative map and 14 polymorphic sequence tagged sites (STS) from the OARX linkage map. This first-generation RH map of OARX contributes to the expansion of a comprehensive ovine genome map for sheep and provides evidence of rearrangements in loci order compared to the human and cattle orders.
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307 POSTER Effects of triple knockdown of cIAP-1, c-IAP-2 and XIAP on prostate cancer cell susceptibility to apoptosis. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72241-9] [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] Open
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Novel titanocene analogues induce apoptosis in prostate cancer epithelial cells by initiating a DNA damage response. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)71286-2] [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] Open
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Novel titanocene anti-cancer drugs and their effect on apoptosis and the apoptotic pathway in prostate cancer cells. Apoptosis 2006; 11:1205-14. [PMID: 16699961 DOI: 10.1007/s10495-006-6796-1] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Advanced prostate cancer is not curable by current treatment strategies indicating a significant need for new chemotherapeutic options. Highly substituted ansa-titanocene compounds have shown promising cytotoxic activity in a range of cancers. The objectives of this study are to examine the effects of these titanocene compounds on prostate cancer cells. Prostate cell lines were treated with three novel titanocene compounds and compared to titanocene dichloride and cisplatin. Percent apoptosis, viability and cell cycle were assessed using propidium iodide DNA incorporation with flow cytometry. Cytochrome C was assessed by western blotting of mitochondrial and cytoplasmic fractions. Apoptosis Inducing Factor was assessed by confocal microscopy. These novel compounds induced more apoptosis compared to cisplatin in a dose dependent manner. Compound Y had the most significant effect on cell cycle and apoptosis. Despite the release of cytochrome C from the mitochondrial fraction there was no inhibition of apoptosis with the pan caspase inhibitor, ZVAD-FMK. AIF was shown to translocate from the cytosol to the nucleus mediating a caspase independent cell death. Bcl-2 over expressing PC-3 cells, which were resistant to cisplatin induced apoptosis, underwent apoptosis following treatment with all the titanocene compounds. This study demonstrates possible mechanisms by which these novel titanocene compounds can mediate their apoptotic effect in vitro. The fact that they can induce more apoptosis than cisplatin in advanced cancer cell lines would confer an advantage over cisplatin. They represent exciting new agents with future potential for the treatment of advanced prostate cancer.
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Specific substitutions in the echinocandin target Fks1p account for reduced susceptibility of rare laboratory and clinical Candida sp. isolates. Antimicrob Agents Chemother 2005; 49:3264-73. [PMID: 16048935 PMCID: PMC1196231 DOI: 10.1128/aac.49.8.3264-3273.2005] [Citation(s) in RCA: 321] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
An association between reduced susceptibility to echinocandins and changes in the 1,3-beta-d-glucan synthase (GS) subunit Fks1p was investigated. Specific mutations in fks1 genes from Saccharomyces cerevisiae and Candida albicans mutants are described that are necessary and sufficient for reduced susceptibility to the echinocandin drug caspofungin. One group of amino acid changes in ScFks1p, ScFks2p, and CaFks1p defines a conserved region (Phe 641 to Asp 648 of CaFks1p) in the Fks1 family of proteins. The relationship between several of these fks1 mutations and the phenotype of reduced caspofungin susceptibility was confirmed using site-directed mutagenesis or integrative transformation. Glucan synthase activity from these mutants was less susceptible to caspofungin inhibition, and heterozygous and homozygous Cafks1 C. albicans mutants could be distinguished based on the shape of inhibition curves. The C. albicans mutants were less susceptible to caspofungin than wild-type strains in a murine model of disseminated candidiasis. Five Candida isolates with reduced susceptibility to caspofungin were recovered from three patients enrolled in a clinical trial. Four C. albicans strains showed amino acid changes at Ser 645 of CaFks1p, while a single Candida krusei isolate had a deduced R1361G substitution. The clinical C. albicans mutants were less susceptible to caspofungin in the disseminated candidiasis model, and GS inhibition profiles and DNA sequence analyses were consistent with a homozygous fks1 mutation. Our results indicate that substitutions in the Fks1p subunit of GS are sufficient to confer reduced susceptibility to echinocandins in S. cerevisiae and the pathogens C. albicans and C. krusei.
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Just say no to faulty, outdated equipment. NURSING TIMES 2001; 97:21. [PMID: 11954346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Half empty, half full, half cock? BRITISH JOURNAL OF PERIOPERATIVE NURSING : THE JOURNAL OF THE NATIONAL ASSOCIATION OF THEATRE NURSES 2001; 11:53. [PMID: 11892335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Effects of dimenhydrinate on computerized dynamic posturography. THE JOURNAL OF OTOLARYNGOLOGY 2000; 29:337-9. [PMID: 11770139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE Previous studies have demonstrated that sedatives and antiemetics commonly used by patients suppress the vestibulo-ocular reflexes during electronystagmography, making it more difficult to quantify function in such patients. The effects of these medications on computerized dynamic posturography (CDP) have not been studied, and the influences, if any, on the vestibulospinal reflexes are not known. We aimed to study the influence, if any, of dimenhydrinate on CDP performance. DESIGN A double-blinded study using a randomized protocol to compare the effects of dimenhydrinate and placebo on CDP performance in normal subjects. SETTING A tertiary/quaternary care facility using a standardized CDP assessment protocol. METHODS After a CDP training session (one assessment) to rule out any learning effect, 10 subjects underwent CDP assessment on 2 separate days after ingestion of either a standard single dose of dimenhydrinate or placebo. MAIN OUTCOME MEASURES Pre- and post-medication CDP performance was measured using Sensory Organization Test (SOT) composite scores and also scores on CDP conditions particularly sensitive to measurement of vestibular impairment (SOT conditions 5 and 6). RESULTS Analysis of data showed no significant effect on CDP performance of normal subjects after dimenhydrinate administration, although there may be a trend toward a slight effect on performance. CONCLUSIONS There seems to be no significant effect of dimenhydrinate on CDP performance in normal subjects, although there may be a trend. Further studies using a dose causing more significant symptoms or using a higher number of subjects may clarify this.
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Realising your assets. BRITISH JOURNAL OF PERIOPERATIVE NURSING : THE JOURNAL OF THE NATIONAL ASSOCIATION OF THEATRE NURSES 2000; 10:499. [PMID: 11892311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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What every physician should know about HCFA's new Payment Error Prevention Program. MISSOURI MEDICINE 2000; 97:238-9. [PMID: 10916991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Being old is detrimental to your health. BRITISH JOURNAL OF PERIOPERATIVE NURSING : THE JOURNAL OF THE NATIONAL ASSOCIATION OF THEATRE NURSES 2000; 10:78. [PMID: 11042794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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Genomic characterization of the sheep vasopressin V1a receptor gene and promoter, with assignment to bands q23-24 of sheep chromosome 3 and cattle chromosome 5. Gene 1999; 240:183-92. [PMID: 10564825 DOI: 10.1016/s0378-1119(99)00407-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Arginine vasopressin interacts with the vasopressin type 1a receptor (V1aR) to initiate physiological effects such as vasoconstriction of blood vessels and glycogenolysis. AVP is also involved in central nervous effects such as body homeostasis and blood pressure control. The complete genomic organization of the sheep V1aR gene has been determined, including the presence of one major and two minor transcriptional start sites at -321, -206 and -91bp respectively, relative to the ATG codon. Another more distal minor transcriptional start site was also localized between nucleotides -997 and -892 relative to the ATG codon. One intron exists in the sheep V1aR gene and potential cis- and trans- acting sites were identified in the sheep V1aR promoter. The promoter was also compared to the rat V1aR promoter. The sheep V1aR promoter displays features typical of housekeeping genes, although tissue-specific expression does not support this. V1aR mRNA is absent in the adult sheep liver but not the kidney. One copy of the V1aR gene exists in the sheep genome, which was localized to chromosome 3q23-24, and to the homoeologous position, 5q23-24 in cattle.
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The Chris Gill column. Crisis? What crisis? THE BRITISH JOURNAL OF THEATRE NURSING : NATNEWS : THE OFFICIAL JOURNAL OF THE NATIONAL ASSOCIATION OF THEATRE NURSES 1999; 9:105. [PMID: 10347414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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