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1.
J Assist Reprod Genet ; 39(2): 505-516, 2022 Feb.
Article in English | MEDLINE | ID: mdl-35032286

ABSTRACT

PURPOSE: As a further step to elucidate the actual diverse spectrum of oncofertility practices for breast cancer around the globe, we present and discuss the comparisons of oncofertility practices for breast cancer in limited versus optimum resource settings based on data collected in the Repro-Can-OPEN Study Part I & II. METHODS: We surveyed 39 oncofertility centers including 14 in limited resource settings from Africa, Asia & Latin America (Repro-Can-OPEN Study Part I), and 25 in optimum resource settings from the United States, Europe, Australia and Japan (Repro-Can-OPEN Study Part II). Survey questions covered the availability of fertility preservation and restoration options offered to young female patients with breast cancer as well as the degree of utilization. RESULTS: In the Repro-Can-OPEN Study Part I & II, responses for breast cancer and calculated oncofertility scores showed the following characteristics: (1) higher oncofertility scores in optimum resource settings than in limited resource settings especially for established options, (2) frequent utilization of egg freezing, embryo freezing, ovarian tissue freezing, GnRH analogs, and fractionation of chemo- and radiotherapy, (3) promising utilization of oocyte in vitro maturation (IVM), (4) rare utilization of neoadjuvant cytoprotective pharmacotherapy, artificial ovary, and stem cells reproductive technology as they are still in preclinical or early clinical research settings, (5) recognition that technical and ethical concerns should be considered when offering advanced and innovative oncofertility options. CONCLUSIONS: We presented a plausible oncofertility best practice model to guide oncofertility teams in optimizing care for breast cancer patients in various resource settings.


Subject(s)
Breast Neoplasms , Fertility Preservation , Neoplasms , Breast Neoplasms/complications , Embryo, Mammalian , Female , Humans , In Vitro Oocyte Maturation Techniques , Surveys and Questionnaires
2.
Palliat Med Rep ; 3(1): 322-325, 2022.
Article in English | MEDLINE | ID: mdl-36636613

ABSTRACT

The syndrome of remitting seronegative symmetrical synovitis with pitting edema (RS3PE) is a rare diagnosis that is often missed due to lack of both definitive diagnostic criteria and awareness of the disease. This case report describes a patient with chronic lymphocytic leukemia whose diagnosis of RS3PE was possibly delayed due to concomitant treatment-related arthralgias. The pathophysiology, presentation, and treatment of RS3PE are discussed. Greater awareness of malignancy-related RS3PE is crucial from a palliative care perspective as typical opioid pain management will prove ineffective and delay appropriate treatment.

3.
Respir Med ; 183: 106419, 2021 07.
Article in English | MEDLINE | ID: mdl-33957436

ABSTRACT

BACKGROUND: Cognitive dysfunction is often reported in patients who have experienced acute respiratory distress syndrome (ARDS). Extra Corporeal Membrane Oxygenation (ECMO) therapy is increasingly used to manage ARDS patients in ICU, transforming survival rates. However, few studies have examined cognitive outcomes. METHODS: We examined self-reported cognitive complaints, psychiatric outcomes and neuropsychological test performance in survivors of severe hypoxaemia managed with VV-ECMO, at 18-24 month follow-up, compared with a group of healthy controls. RESULTS: Over 70% of ECMO-treated patients (N = 46) complained of difficulty in at least one aspect of cognition on self-report measures (study 1). However, a much lower frequency of cognitive impairment was found on formal neuropsychological testing (study 2). Mean neuropsychological test scores of the ECMO group (N = 24) did not significantly differ from healthy controls (N = 23) after controlling for depression. Less than 30% of ECMO-treated patients showed impairments in anterograde memory, and deficits on general IQ or executive function were seen in <17% of patients. However, we observed high levels of self-reported anxiety and depression in the ECMO-treated patients. CONCLUSIONS: Cognitive outcomes in ECMO-treated patients were generally good, with preserved neuropsychological function in the majority of patients, despite severe hypoxaemia and high rates of self-reported difficulties. However, we saw high levels of mental health symptoms in these patients, highlighting a need for psychological support.


Subject(s)
Cognition , Extracorporeal Membrane Oxygenation , Respiratory Distress Syndrome/psychology , Respiratory Distress Syndrome/therapy , Adult , Aged , Anxiety , Depression , Executive Function , Female , Humans , Male , Middle Aged , Neuropsychological Tests , Patient Reported Outcome Measures , Time Factors , Young Adult
4.
Sci Rep ; 9(1): 11503, 2019 Aug 08.
Article in English | MEDLINE | ID: mdl-31395897

ABSTRACT

Recent advances in additive manufacturing have enabled fabrication of phononic crystals and metamaterials which exhibit spectral gaps, or stopbands, in which the propagation of elastic waves is prohibited by Bragg scattering or local resonance effects. Due to the high level of design freedom available to additive manufacturing, the propagation properties of the elastic waves in metamaterials are tunable through design of the periodic cell. In this paper, we outline a new design approach for metamaterials incorporating internal resonators, and provide numerical and experimental evidence that the stopband exists over the irreducible Brillouin zone of the unit cell of the metamaterial (i.e. is a three-dimensional stopband). The targeted stopband covers a much lower frequency range than what can be realised through Bragg scattering alone. Metamaterials have the ability to provide (a) lower frequency stopbands than Bragg-type phononic crystals within the same design volume, and/or (b) comparable stopband frequencies with reduced unit cell dimensions. We also demonstrate that the stopband frequency range of the metamaterial can be tuned through modification of the metamaterial design. Applications for such metamaterials include aerospace and transport components, as well as precision engineering components such as vibration-suppressing platforms, supports for rotary components, machine tool mounts and metrology frames.

5.
J Immunother Cancer ; 4: 67, 2016.
Article in English | MEDLINE | ID: mdl-27777776

ABSTRACT

BACKGROUND: VEGF-targeted therapy has become the mainstay of treatment for majority of mRCC patients. For most patients, benefit is short-lived and therefore treatment remains palliative in intent. HD IL2 is an effective immunotherapy treatment capable of durable remission in some patients but its unselected use has been difficult due to its modest response rate and considerable adverse effects. Using set pathology criteria as a selection tool in clinical practice, we have been able to show improved outcomes in our previous report. Here, we present an updated and extended report of this treatment and seek to explore any pathological, clinical and treatment variables likely to predict better outcomes. METHODS: This is an extension of a previously reported clinical audit, which includes mRCC cases treated with HD IL2 between 2003 and 2013. Since 2006, tumour specimens of potential candidates were routinely reviewed prospectively and stratified into Favourable or Other categories based on constitution of histological growth pattern, namely alveolar or solid versus papillary and/or sarcomatoid architecture; clear cell versus granular cell cytoplasmic morphology. HD IL2 was preferentially offered to patients with Favourable pathology. Outcome evaluation includes response rates, survival, and treatment tolerance. Multivariate analysis was performed to explore potential prognostic and predictive factors. RESULTS: Among prospectively selected patients with Favourable pathology (n = 106), overall response rate was 48.1 % (51/106) with CR rate of 21.6 % (23/106). Median OS was 58.1 months. Factors associated with significantly better response and/or survival includes favourable pathology pattern, higher cycle 1 tolerance and lower number of metastatic organ sites (<3). CAIX (Carbonic anhydrase 9) has prognostic value but is not predictive of response. Toxicities were those expected of IL2 but were manageable on general medical wards, with no treatment-related death. Importantly most complete responses were durable with 76 % (23/30) cases remained relapse-free (median 39 months follow up) and 2 of the seven who relapsed had had long-term disease free survival after resection of oligometastatic relapse. CONCLUSIONS: Our experience shows that HD IL2 remains an effective and safe treatment in well-selected cases of mRCC. The result in this single-institution patient series confirms similar outcomes to our previously reported retrospective series. Given the prospect of long-term remission, fit patients with Favourable histology and low disease burden should be considered for HD IL2 in an experienced centre. Better understanding has been gained from this in-depth analysis especially the examination of possible response predictors and strategies that can improve treatment outcome.


Subject(s)
Antineoplastic Agents, Immunological/administration & dosage , Carcinoma, Renal Cell/drug therapy , Carcinoma, Renal Cell/pathology , Immunologic Factors/administration & dosage , Interleukin-2/administration & dosage , Kidney Neoplasms/drug therapy , Kidney Neoplasms/pathology , Adult , Aged , Biomarkers, Tumor , Carbonic Anhydrase IX/genetics , Carbonic Anhydrase IX/metabolism , Carcinoma, Renal Cell/mortality , Cell Membrane/metabolism , Combined Modality Therapy , Female , Humans , Kaplan-Meier Estimate , Kidney Neoplasms/mortality , Male , Middle Aged , Neoplasm Metastasis , Neoplasm Staging , Patient Selection , Proportional Hazards Models , Treatment Outcome , Young Adult
6.
Pediatr Obes ; 11(5): 321-5, 2016 10.
Article in English | MEDLINE | ID: mdl-27684716

ABSTRACT

BACKGROUND: Member states of the World Health Organization have adopted resolutions aiming to achieve 'no increase on obesity levels' by 2025 (based on 2010 levels) for infants, adolescents and adults. OBJECTIVES: We aimed to assess the scale of the problem facing health planners and service providers. METHODS AND RESULTS: Using data prepared by the Global Burden of Disease collaborative for 2000 and 2013, we have estimated that by 2025 some 268 million children aged 5-17 years may be overweight, including 91 million obese, assuming no policy interventions have proven effective at changing current trends. We have also estimated the likely numbers of children in 2025 with obesity-related comorbidities: impaired glucose tolerance (12 million), type 2 diabetes (4 million), hypertension (27 million) and hepatic steatosis (38 million). A supplemental table provides estimates for each of 184 nations. CONCLUSION: The 2025 targets are unlikely to be met, and health service providers will need to plan for a significant increase in obesity-linked comorbidities.


Subject(s)
Global Health/statistics & numerical data , Overweight/epidemiology , Pediatric Obesity/epidemiology , Adolescent , Child , Child, Preschool , Comorbidity , Female , Humans , Infant , Overweight/complications , Pediatric Obesity/complications , Prevalence
7.
Obes Rev ; 17(10): 1001-11, 2016 10.
Article in English | MEDLINE | ID: mdl-27324830

ABSTRACT

Overweight and obesity increase the risks of diabetes and cardiovascular disease (CVD). This has been shown to be reversed with weight loss. A systematic review and meta-analysis were performed to determine the effect of weight loss in the primary prevention of CVD. PubMed, Embase and the Cochrane Library databases were searched electronically through to May 2013. Randomized controlled trials assessing weight loss and cardiovascular risk factors and outcomes were included. A random effects meta-analysis, with sub-group analyses for degree of weight loss, and age were performed. Because few studies reported clinical outcomes of CVD, analyses were limited to cardiovascular risk factors (83 studies). Interventions that caused any weight loss significantly reduced systolic blood pressure (-2.68 mmHg, 95% CI -3.37, -2.11), diastolic blood pressure (-1.34 mmHg, 95% CI -1.71, -0.97), low-density lipoprotein cholesterol (-0.20 mmol L(-1) , 95% CI -0.29, -0.10), triglycerides (-0.13 mmol L(-1) , 95% CI -0.22, -0.03), fasting plasma glucose (-0.32 mmol L(-1) , 95% CI -0.43, -0.22) and haemoglobin A1c(-0.40%, 95% CI -0.52, -0.28) over 6-12 months. Significant changes remained after 2 years for several risk factors. Similar results were seen in sub-group analyses. Interventions that cause weight loss are effective at improving cardiovascular risk factors at least for 2 years. © 2016 World Obesity.


Subject(s)
Cardiovascular Diseases/prevention & control , Diabetes Mellitus, Type 2/prevention & control , Diabetic Angiopathies/prevention & control , Diet, Reducing , Exercise , Obesity/complications , Primary Prevention/methods , Weight Loss , Blood Pressure , Humans , Obesity/physiopathology , Obesity/prevention & control , Treatment Outcome
8.
Rev Sci Instrum ; 87(4): 041101, 2016 04.
Article in English | MEDLINE | ID: mdl-27131645

ABSTRACT

The scope of this review is to investigate the main post-process optical form measurement technologies available in industry today and to determine whether they are applicable to industrial-grade metal additive manufactured parts. An in-depth review of the operation of optical three-dimensional form measurement technologies applicable to metal additive manufacturing is presented, with a focus on their fundamental limitations. Looking into the future, some alternative candidate measurement technologies potentially applicable to metal additive manufacturing will be discussed, which either provide higher accuracy than currently available techniques but lack measurement volume, or inversely, which operate in the appropriate measurement volume but are not currently accurate enough to be used for industrial measurement.

9.
B-ENT ; Suppl 26(1): 11-19, 2016.
Article in English | MEDLINE | ID: mdl-29461730

ABSTRACT

Face and neck: airway and sensorial capacities. For the assessment and the management of face and neck trauma knowledge of the neuro-anatomy and physiology of the ear, nose, throat (ENT) and head and neck (HN) region and structures is essential, as this area is particularly vulnerable to injury. Indeed, the complex anatomy and physiology in this specific area supports important basic functions. In addition, this review elaborates on upper airway and sensorial capacities. Upper airway dimensions are influenced by bony and soft tissues. Age is of fundamental importance in the upper airway assessment, as significant differences in size and proportions apply in children and adults. The cranial nerves (CN) supply motor, sensory ad special sensory fibres to the upper airway. Injury of the CN is a frequent complication of trauma.


Subject(s)
Cranial Nerve Injuries/diagnosis , Cranial Nerves/anatomy & histology , Face/anatomy & histology , Facial Injuries/diagnosis , Neck Injuries/diagnosis , Neck/anatomy & histology , Respiratory System/anatomy & histology , Adult , Age Factors , Child , Cranial Nerves/physiology , Face/physiology , Hearing , Humans , Neck/physiology , Nociception , Postural Balance , Respiratory Physiological Phenomena , Smell , Taste Perception , Vision, Ocular
10.
B-ENT ; Suppl 26(2): 1-18, 2016.
Article in English | MEDLINE | ID: mdl-29558572

ABSTRACT

Facial trauma. Patients with facial trauma must be assessed in a systematic way so as to avoid missing any injury. Severe and disfiguring facial injuries can be distracting. However, clinicians must first focus on the basics of trauma care, following the Advanced Trauma Life Support (ATLS) system of care. Maxillofacial trauma occurs in a significant number of severely injured patients. Life- and sight-threatening injuries must be excluded during the primary and secondary surveys. Special attention must be paid to sight-threatening injuries in stabilized patients through early referral to an appropriate specialist or the early initiation of emergency care treatment. The gold standard for the radiographic evaluation of facial injuries is computed tomography (CT) imaging. Nasal fractures are the most frequent isolated facial fractures. Isolated nasal fractures are principally diagnosed through history and clinical examination. Closed reduction is the most frequently performed treatment for isolated nasal fractures, with a fractured nasal septum as a predictor of failure. Ear, nose and throat surgeons, maxillofacial surgeons and ophthalmologists must all develop an adequate treatment plan for patients with complex maxillofacial trauma.


Subject(s)
Facial Injuries/diagnosis , Facial Injuries/surgery , Algorithms , Anti-Bacterial Agents/therapeutic use , Diagnostic Imaging , Emergency Medical Services , Facial Bones/diagnostic imaging , Facial Bones/injuries , Facial Bones/surgery , Fracture Fixation , Fractures, Bone/diagnosis , Fractures, Bone/surgery , Humans , Medical History Taking , Physical Examination , Time-to-Treatment
11.
B-ENT ; Suppl 26(2): 103-118, 2016.
Article in English | MEDLINE | ID: mdl-29558580

ABSTRACT

Complex intubation, cricothyrotomy and tracheotomy. Successful management of a difficult airway begins with recognizing the potential problem. When the patient cannot breathe spontaneously, oxygenation and ventilation should start first with bag-valve ventilation, with or without an airway adjunct such as a Mayo cannula, followed by an orotrache4l intubation attempt, performed by an experienced emergency doctor. If orotracheal intubation fails, a quick decision must be made regarding surgical options. In a "cannot intubate, cannot ventilate" situation, a surgical cricothyrotomy should be considered. When orotracheal intubation is impossible, but bag-valve or laryngeal mask ventilation is possible, an urgent surgical tracheostomy should be performed. In the long run, patients in need of longterm artificial ventilation will need a percutaneous or open tracheostomy. This review provides an update of all aspects of immediate and long-term airway management.


Subject(s)
Airway Management/methods , Intubation, Intratracheal , Laryngeal Muscles/surgery , Tracheotomy/methods , Humans , Intubation, Intratracheal/instrumentation , Intubation, Intratracheal/methods , Laryngoscopes , Physical Examination , Tracheotomy/adverse effects , Video Recording
12.
Placenta ; 36(3): 270-8, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25589361

ABSTRACT

INTRODUCTION: The epidermal growth factor (EGF) signaling system regulates trophoblast differentiation, and its disruption could contribute to perinatal disease. We hypothesized that this pathway is altered in preeclampsia, a disorder associated with trophoblast apoptosis and failure to invade and remodel the uterine spiral arteries. METHODS: Six EGF family peptides and a truncated EGF receptor splice variant (p110/EGFR) were examined using immunohistochemistry in the trophoblast of placentas (N = 76) from women with preeclampsia, and compared to placentas from women of similar gestational age (GA) with preterm labor (PTL) or small for gestational age (SGA) fetuses, as well as normal term placentas. EGF, transforming growth factor-α (TGFA), and heparin-binding EGF-like growth factor (HBEGF) were evaluated using ELISA in maternal plasma from another 20 pregnancies with or without preeclampsia. Cell death was evaluated in the HTR-8/SVneo human cytotrophoblast cell line using TUNEL to evaluate the protective effects of EGF peptides. RESULTS: Trophoblast HBEGF, TGFA, and EGF were significantly reduced in preeclampsia compared to PTL and SGA, while p110/EGFR accumulated significantly on the surface of the chorionic villi (p < 0.05). Plasma EGF levels were significantly decreased in preeclamptic patients, compared to non-preeclamptic patients (p < 0.05). HBEGF, EGF, TGFA, epiregulin, and betacellulin each blocked cytotrophoblast cell death in vitro (p < 0.05). DISCUSSION: Three members of the EGF family are dysregulated in placentas with preeclampsia, whereas p110/EGFR, a potential EGF receptor antagonist, is overexpressed. These findings are consistent with the concept that disruption of the EGF signaling system contributes to aberrant trophoblast development associated with preeclampsia.


Subject(s)
Down-Regulation , Epidermal Growth Factor/metabolism , ErbB Receptors/antagonists & inhibitors , Heparin-binding EGF-like Growth Factor/metabolism , Placenta/metabolism , Pre-Eclampsia/metabolism , Transforming Growth Factor alpha/metabolism , Adult , Apoptosis , Cell Line, Transformed , Chorionic Villi/metabolism , Chorionic Villi/pathology , Cohort Studies , Epidermal Growth Factor/blood , Epidermal Growth Factor/chemistry , ErbB Receptors/chemistry , ErbB Receptors/genetics , ErbB Receptors/metabolism , Female , Heparin-binding EGF-like Growth Factor/blood , Humans , Peptide Fragments/blood , Peptide Fragments/metabolism , Placenta/pathology , Placentation , Pre-Eclampsia/blood , Pre-Eclampsia/pathology , Pregnancy , Protein Isoforms/chemistry , Protein Isoforms/genetics , Protein Isoforms/metabolism , Transforming Growth Factor alpha/blood , Trophoblasts/metabolism , Trophoblasts/pathology , Young Adult
13.
J Anim Sci ; 91(8): 3564-73, 2013 Aug.
Article in English | MEDLINE | ID: mdl-23736052

ABSTRACT

Bovine respiratory disease (BRD) is the most economically important disease in U.S. feedlots. Infection can result in morbidity, mortality, and reduced average daily gain. Cheap and reliable genetic methods of prediction and protection from BRD would be highly advantageous to the industry. The immune response may correlate with BRD incidence. Cattle (n = 2,182) were vaccinated against common viral and bacterial pathogens of BRD. Two blood samples were collected, one during booster vaccination and one 21d later, enabling 3 phenotypes for each trait [prebooster (pre), postbooster (post), and delta (post minus pre)]. From the blood samples innate and adaptive responses [counts of white blood cells (WBC), neutrophils, lymphocytes, monocytes, eosinophils, and basophils] were measured. In addition, feedlot ADG and binary traits [health records (HR; 0 = healthy, 1 = ill) and lung scores (LS; collected at harvest; 0 = no lesions, 1 = lesions)] were also recorded. Traits ADG, HR, and LS have all been significantly correlated with infection to BRD. In this investigation we aimed to find correlations between the immune response and ADG, HR, and LS to find an easily measurable trait that would be a good predictor of BRD resistance after vaccination. The results showed an average positive delta for the innate immune response (eosinophils, basophils, neutrophils), whereas the adaptive immune response had an average negative delta (lymphocytes). Overall, we discovered that the immune responses had moderately high heritabilities (h(2); lowest: delta monocytes, 0.21 ± 0.05; greatest: pre lymphocytes: 0.5 ± 0.05), with lymphocytes having the greatest h(2) throughout the study (h(2) ≥ 0.41). All genetic correlations were calculated using bivariate REML models. Although LS did not significantly correlate with any of the immune phenotypes, both ADG (post lymphocytes, -0.24 ± 0.12) and HR (pre eosinophils, -0.67 ± 0.29; delta WBC, -0.5 ± 0.24, and delta lymphocytes, -0.67 ± 0.21) did. All the significant genetic correlations with HR were negative; resistance to BRD appears to be a function of greater delta lymphocytes and WBC. The increase in eosinophils may potentially link its role in decreasing lymphocytes. These results may enable producers to predict if revaccination, quarantine, and breeding of animals is required to reduce the incidence of BRD postvaccination. In addition, immunological phenotypes maybe used to aid genomic selection indices to select animals with greater rates of protection after BRD vaccination.


Subject(s)
Bacterial Vaccines/immunology , Bovine Respiratory Disease Complex/prevention & control , Leukocytes/physiology , Lung/pathology , Viral Vaccines/immunology , Weight Gain/physiology , Animals , Bovine Respiratory Disease Complex/genetics , Bovine Respiratory Disease Complex/immunology , Cattle , Genetic Variation , Immunization, Secondary/veterinary
14.
J Anim Sci ; 91(8): 3549-56, 2013 Aug.
Article in English | MEDLINE | ID: mdl-23736055

ABSTRACT

Vitamin D is an important modulator of calcium homeostasis and has several effects on the immune system. The objective of the study was to estimate its heritability and to identify genomic regions associated with concentration of circulating 25-hydroxyvitamin D (25OHD) in beef cattle. Status of vitamin D was measured in crossbred animals from Cycle VII of the United States Meat Animal Research Center (USMARC) Germplasm Evaluation Project. Progeny were born from March through May in 2008 and in 2010. Heritability was estimated and a genomewide association study was conducted on the concentration of 25OHD measured in 1,432 animals at preconditioning and 1,333 animals at weaning. Genotyping of the population was done by imputing from the parental generation genotyped with a high density array (777,000 SNP) to a target population genotyped with a medium density SNP array (50,000 SNP). After imputation, 675,018 SNP were used in the genomewide association study. Heritability of concentration of circulating 25OHD in cattle at preconditioning and at weaning was 0.41 ± 0.08 and 0.32 ± 0.11, respectively. A region on chromosome 3 was associated with circulating 25OHD. The region on BTA3 had 7 SNP significantly (P < 7.4 × 10(-8)) associated at the genomewide level with serum concentrations of serum 25OHD. Genomewide significant SNP spanned the region between 84.93 and 86.65 megabases (Mb); however, 6 SNP reside between 86.64 and 86.65 Mb. The gene CYP2J2 was identified as a candidate gene associated with concentrations of serum 25OHD in cattle. This is 1 of 6 enzymes involved in metabolizing vitamin D to 25OHD. Results from the present study suggest that CYP2J2 is a gene controlling serum 25OHD concentrations in cattle. CYP2J2 should be considered a prime candidate for understanding both genetic and physiological factors affecting serum 25OHD concentrations in cattle and, therefore, vitamin D status.


Subject(s)
Cattle/genetics , Cattle/metabolism , Cytochrome P-450 Enzyme System/metabolism , Genomics , Vitamin D/blood , Animals , Calcifediol/blood , Calcifediol/metabolism , Calcium/metabolism , Cattle/blood , Chromosome Mapping , Cytochrome P-450 CYP2J2 , Cytochrome P-450 Enzyme System/genetics , Female , Gene Expression Regulation/physiology , Genetic Markers , Genotype , Male , Polymorphism, Single Nucleotide
15.
J Microsc ; 251(1): 99-107, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23691963

ABSTRACT

This work reports on the retrieval of the pupil function and coherent transfer function of a coherent reflection type confocal microscope from simulated measurements of the intensity point spread function. Two phase retrieval algorithms are presented in this vein, which incorporate the multiple pupil dependence of image formation in confocal microscopy. Verification of the algorithms follows by numerical simulations.

17.
Obes Rev ; 14(7): 523-31, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23601528

ABSTRACT

A common policy response to the rise in obesity prevalence is to undertake interventions in childhood, but it is an open question whether this is more effective than reducing the risk of becoming obese during adulthood. In this paper, we model the effect on health outcomes of (i) reducing the prevalence of obesity when entering adulthood; (ii) reducing the risk of becoming obese throughout adult life; and (iii) combinations of both approaches. We found that, while all approaches reduce the prevalence of chronic diseases and improve life expectancy, a given percentage reduction in obesity prevalence achieved during childhood had a smaller effect than the same percentage reduction in the risk of becoming obese applied throughout adulthood. A small increase in the probability of becoming obese during adulthood offsets a substantial reduction in prevalence of overweight/obesity achieved during childhood, with the gains from a 50% reduction in child obesity prevalence offset by a 10% increase in the probability of becoming obese in adulthood. We conclude that both policy approaches can improve the health profile throughout the life course of a cohort, but they are not equivalent, and a large reduction in child obesity prevalence may be reversed by a small increase in the risk of becoming overweight or obese in adulthood.


Subject(s)
Models, Biological , Obesity/complications , Obesity/epidemiology , Outcome Assessment, Health Care , Risk Assessment , Adult , Child , Chronic Disease , Humans , Life Expectancy , Obesity/mortality , Prevalence
18.
J Trauma Acute Care Surg ; 73(4): 977-82, 2012 Oct.
Article in English | MEDLINE | ID: mdl-22914077

ABSTRACT

BACKGROUND: The severity and location of injuries resulting from vehicular collisions are normally recorded in Abbreviated Injury Scale (AIS) code; we propose a system to link AIS code to a description of acute aortic syndrome (AAS), thus allowing the hypothesis that aortic injury is progressive with collision kinematics to be tested. METHODS: Standard AIS codes were matched with a clinical description of AAS. A total of 199 collisions that resulted in aortic injury were extracted from a national automotive collision database and the outcomes mapped onto AAS descriptions. The severity of aortic injury (AIS severity score) and stage of AAS progression were compared with collision kinematics and occupant demographics. Post hoc power analyses were used to estimate maximum effect size. RESULTS: The general demographic distribution of the sample represented that of the UK population in regard to sex and age. No significant relationship was observed between estimated test speed, collision direction, occupant location or seat belt use and clinical progression of aortic injury (once initiated). Power analysis confirmed that a suitable sample size was used to observe a medium effect in most of the cases. Similarly, no association was observed between injury severity and collision kinematics. CONCLUSION: There is sufficient information on AIS severity and location codes to map onto the clinical AAS spectrum. It was not possible, with this data set, to consider the influence of collision kinematics on aortic injury initiation. However, it was demonstrated that after initiation, further progression along the AAS pathway was not influenced by collision kinematics. This might be because the injury is not progressive, because the vehicle kinematics studied do not fully represent the kinematics of the occupants, or because an unknown factor, such as stage of cardiac cycle, dominates. LEVEL OF EVIDENCE: Epidemiologic/prognostic study, level IV.


Subject(s)
Abbreviated Injury Scale , Accidents, Traffic , Aorta, Thoracic/injuries , Aortic Diseases/diagnosis , Thoracic Injuries/diagnosis , Acute Disease , Adolescent , Adult , Aged , Aged, 80 and over , Aortic Diseases/epidemiology , Aortic Diseases/etiology , Child , Female , Follow-Up Studies , Humans , Incidence , Male , Middle Aged , Retrospective Studies , Syndrome , Thoracic Injuries/complications , Time Factors , United Kingdom/epidemiology , Young Adult
19.
Article in English | MEDLINE | ID: mdl-20374938

ABSTRACT

Longitudinal bone growth depends upon the execution of an intricate series of cellular activities by epiphyseal growth plate chondrocytes. In order to better understand these coordinated events, microarray analysis was used to compare gene expression in chondrocytes isolated from the proliferative and hypertrophic zones of the avian growth plate. RT-PCR was used to confirm the identity of a select number of genes. The expression of 745 genes was found to differ 3-fold or greater at the 0.05 level of probability. Transferrin was the most highly up-regulated (321-fold) gene associated with chondrocyte hypertrophy. Immunohistochemistry localized this peptide adjacent to the penetrating blood vessels in the growth plate of 3-week-old chicks. Fibulin, OC-116, DMP-1 and PHEX were among the expanded number of genes associated with extracellular matrix metabolism. The presence of NELL2, ATOH8 and PLEXIN suggests a neuronal involvement in growth plate physiology. In addition, the expression of a large number of genes associated with angiogenesis and cellular stress was up-regulated. These processes are important to the physiology and survival of chondrocytes in the unique and stressful environment of the epiphyseal growth plate.


Subject(s)
Chickens/growth & development , Chickens/genetics , Epiphyses/growth & development , Epiphyses/metabolism , Gene Expression Profiling , Growth Plate/metabolism , Oligonucleotide Array Sequence Analysis , Animals , Bone Morphogenetic Proteins/genetics , Bone Morphogenetic Proteins/metabolism , Cell Differentiation , Cell Proliferation , Chondrocytes/cytology , Chondrocytes/metabolism , Extracellular Matrix/enzymology , Gene Expression Regulation, Developmental , Intercellular Signaling Peptides and Proteins/metabolism , Ion Transport/genetics , Lipid Metabolism/genetics , Neovascularization, Physiologic/genetics , Neurons/metabolism , Oxidoreductases/genetics , Oxidoreductases/metabolism , Peptides/metabolism , Prostaglandins/genetics , Prostaglandins/metabolism , Selenoproteins/genetics , Selenoproteins/metabolism , Signal Transduction/genetics , Transcription Factors/genetics , Transcription Factors/metabolism , Tretinoin/metabolism , Triiodothyronine/metabolism
20.
BMJ ; 338: a2790, 2009 Jan 20.
Article in English | MEDLINE | ID: mdl-19155255
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