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1.
Eur J Obstet Gynecol Reprod Biol ; 286: 90-94, 2023 Jul.
Article in English | MEDLINE | ID: mdl-37229963

ABSTRACT

BACKGROUND: The UK and Ireland are facing significant challenges in the recruitment and retention of midwifery staff. Deficiencies in staffing, training and leadership have been cited as contributory factors to substandard care in both regional and global independent maternity safety reports. Locally, workforce planning is critical to maintaining 'one to one' care for all women in labor and to meet the peaks of daily birthing suite activity. OBJECTIVES: Analyze the variation in work intensity, defined by the mean number and range of births per midwifery working hours. METHODS: Retrospective observational study of birthing suite activity between 2017 and 2020. 30,550 singleton births were reported during the study period; however, 6529 elective Cesarean sections were excluded as these were performed during normal working hours by a separate operating theatre team. The times of 24,021 singleton births were organized into five proposed midwifery working rosters lasting eight or 12 h; A (00.00-07.59), B (08.00-15.59), C (16.00-23.59), D (20.00-0.759) and E (0.800-19.59). RESULTS: The number of births was comparable between the eight-hour and 12-hour work periods with a mean of five to six babies born per roster (range zero to 15). Work periods D and E lasting 12-hours both recorded a mean of eight births (range zero to 18). Hourly births ranged from a minimum of zero to a maximum of five births per hour (greater than seven times the mean), a number that was achieved 14 times during the study period. CONCLUSIONS: The mean number of births is consistent between normal working hours and unsociable 'on-call' periods, however there is an extreme range of activity within each midwifery roster. Prompt escalation plans remain essential for maternity services to manage unexpected increases in demand and complexity. WHAT IS ALREADY KNOWN ON THIS TOPIC: Shortfalls in staffing and inadequate workforce planning have been frequently cited in recent maternity safety reports as barriers to sustainable and safe maternity care. WHAT THIS STUDY ADDS: Our study shows that the mean number of births in a large tertiary center are consistent across day and night rosters. However, there are large fluctuations in activity during which births can exceed the number of available midwives. HOW THIS STUDY MIGHT AFFECT RESEARCH, PRACTICE OR POLICY: Our study reflects the sentiments of the Ockenden review and APPG report on safe maternity staffing. Investment in services and the workforce to aid recruitment and reduce attrition is essential to establish robust escalation plans, including the deployment of additional staff in the event of extreme service pressures.


Subject(s)
Labor, Obstetric , Maternal Health Services , Midwifery , Obstetrics , Pregnancy , Female , Humans , Midwifery/education , Workforce
2.
Ultrasound Obstet Gynecol ; 54(3): 338-343, 2019 Sep.
Article in English | MEDLINE | ID: mdl-30887629

ABSTRACT

OBJECTIVE: Increased fetal size is associated with shoulder dystocia during labor and subsequent need for assisted delivery. We sought to investigate if increased fetal adiposity diagnosed sonographically in late pregnancy is associated with increased risk of operative delivery. METHODS: This secondary analysis of the Genesis Study recruited 2392 nulliparous women with singleton pregnancy in cephalic presentation, in a prospective, multicenter study, to examine prenatal and intrapartum predictors of Cesarean delivery. Participants underwent ultrasound and clinical evaluation between 39 + 0 and 40 + 6 weeks' gestation. Data on fetal biometry were not revealed to patients or to their managing clinicians. A fetal adiposity composite of fetal thigh adiposity and fetal abdominal wall thickness was compiled for each infant in order to determine whether fetal adiposity > 90th centile was associated with an increased risk of Cesarean or operative vaginal delivery. RESULTS: After exclusions, data were available for 2330 patients. Patients with a fetal adiposity composite > 90th centile had a higher maternal body mass index (BMI) (25 ± 5 kg/m2 vs 24 ± 4 kg/m2 ; P = 0.005), birth weight (3872 ± 417 g vs 3585 ± 401 g; P < 0.0001) and rate of induction of labor (47% (108/232) vs 40% (834/2098); P = 0.048) than did those with an adiposity composite ≤ 90th centile. Fetuses with adiposity composite > 90th centile were more likely to require Cesarean delivery than were those with adiposity composite ≤ 90th centile (P < 0.0001). After adjusting for birth weight, maternal BMI and need for induction of labor, fetal adiposity > 90th centile remained a risk factor for Cesarean delivery (P < 0.0001). A fetal adiposity composite > 90th centile was more predictive of the need for unplanned Cesarean delivery than was an estimated fetal weight > 90th centile (odds ratio, 2.20 (95% CI, 1.65-2.94; P < 0.001) vs 1.74 (95% CI, 1.29-2.35; P < 0.001). Having an adiposity composite > 90th centile was not associated with an increased likelihood of operative vaginal delivery when compared with having an adiposity composite ≤ 90th centile (P = 0.37). CONCLUSIONS: Fetuses with increased adipose deposition are more likely to require Cesarean delivery than are those without increased adiposity. Consideration should, therefore, be given to adding fetal thigh adiposity and abdominal wall thickness to fetal sonographic assessment in late pregnancy. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.


Subject(s)
Cesarean Section/statistics & numerical data , Fetal Macrosomia/diagnostic imaging , Ultrasonography, Prenatal , Adult , Female , Fetal Weight , Humans , Predictive Value of Tests , Pregnancy , Prospective Studies , Risk Assessment
3.
Eur J Obstet Gynecol Reprod Biol ; 198: 30-34, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26773248

ABSTRACT

OBJECTIVE: To assess continence and anal sphincter integrity during a subsequent pregnancy and delivery in women known to have a previous anal sphincter injury. DESIGN: Prospective observational study. SETTING: The National Maternity Hospital, Dublin, Ireland. POPULATION: Antenatal patients with a documented obstetric anal sphincter injury at a previous delivery. METHODS: Women underwent symptom scoring, endoanal ultrasound and manometry. MAIN OUTCOME MEASURES: Recommended and actual mode of delivery, continence scores and endoanal ultrasound findings after index delivery. RESULTS: 557 women were studied. 293 (53%) had no symptoms of faecal incontinence, 189 (34%) had mild symptoms and 75 (13%) moderate or severe symptoms. 408 (73%) had an endoanal ultrasound. 383(94%) had a normal or small (<1 quadrant) defect in the internal anal sphincter and 390 (96%) had a scar or small (<1e quadrant) defect in the external anal sphincter. 393 (70%) delivered vaginally. 164 (30%) were delivered by caesarean section. 197/557 (35%) returned for follow-up. There was no significant change in continence following either vaginal or caesarean delivery. 20 (5.1%) women had a recognised second anal sphincter tear during vaginal delivery. CONCLUSIONS: The majority of women who sustain a third degree tear have minimal or no symptoms of faecal incontinence when assessed antenatally in a subsequent pregnancy. 70% go on to have a vaginal delivery, with little impact on faecal continence. These findings provide reassurance for patients and clinicians about the safety of vaginal delivery following anal sphincter injury in appropriately selected patients.


Subject(s)
Anal Canal/injuries , Birth Injuries/complications , Obstetric Labor Complications , Parturition/physiology , Adult , Anal Canal/diagnostic imaging , Birth Injuries/diagnostic imaging , Delivery, Obstetric , Fecal Incontinence/diagnostic imaging , Fecal Incontinence/etiology , Female , Humans , Pregnancy , Prospective Studies
4.
BJOG ; 121(12): 1515-20, 2014 Nov.
Article in English | MEDLINE | ID: mdl-24621202

ABSTRACT

OBJECTIVE: To examine the incidence of obstetric anal sphincter injury in women who had a successful vaginal birth after a previous caesarean delivery (VBAC). DESIGN: Retrospective analysis of prospectively gathered data. SETTING: A tertiary referral university institution. POPULATION: All secundiparous women with a previous caesarean delivery who had a VBAC from 2001 to 2011. METHODS: Details of maternal demographics, intrapartum characteristics and outcomes were examined in cases of VBAC with accompanying anal sphincter injury. MAIN OUTCOME MEASURES: Rates of obstetric anal sphincter injury and associated risk factors. RESULTS: During the study period there were 3071 trials of labour in secundiparous women with a previous caesarean delivery; 65% (1981/3071) of these had a successful VBAC. Women having a VBAC were at greater risk of anal sphincter injury than nulliparous women having a vaginal delivery over the same period (5% [98/1981] versus 3.5% [1216/34,496], P = 0.001, odds ratio 1.4, 95% CI 1.15-1.75). The rate of instrumental delivery in woman having a VBAC was 39% (771/1981). On multiple logistic regression analysis an increased rate of instrumental delivery was a strong predictor of sphincter injury (P = 0.03, odds ratio 1.15, 95% CI 1.01-1.3). When the first labours of women with sphincter injury in the VBAC group were examined, 70% (60/86) had been in labour before undergoing their caesarean delivery. CONCLUSION: The incidence of anal sphincter injury in women undergoing VBAC is 5% and birthweight is the strongest predictor of this. The rate of instrumental delivery in this group was also increased.


Subject(s)
Anal Canal/injuries , Extraction, Obstetrical/adverse effects , Vaginal Birth after Cesarean/adverse effects , Adult , Birth Weight , Extraction, Obstetrical/statistics & numerical data , Female , Follow-Up Studies , Humans , Infant, Newborn , Logistic Models , Outcome Assessment, Health Care , Pregnancy , Retrospective Studies , Risk Factors
5.
Musculoskeletal Care ; 6(3): 155-67, 2008 Sep.
Article in English | MEDLINE | ID: mdl-18649347

ABSTRACT

OBJECTIVES: The diagnosis of rheumatoid arthritis (RA) brings rapid pharmacological and multidisciplinary team interventions to address inflammatory processes and symptom management. However, people may also need support on the journey to self-management. The aim of this study was to explore what professional support patients feel they receive upon diagnosis, and what support they feel would be most helpful. METHODS: Two focus groups comprised patients with at least five years'; disease duration (n = 7), and patients more recently diagnosed (5-18 months, n = 5). The latter had attended at least two appointments in a rheumatology nurse specialist clinic during the previous year, aimed at providing support upon diagnosis. Transcripts were subjected to thematic analysis to identify common issues regarding support needs, which were then grouped into themes. Interviewing and analysis was performed by researchers not involved in clinical care. RESULTS: Four overarching themes emerged. 'Information' was needed about the symptoms of RA, its management and personal outcome, while 'Support' related to emotional needs ('It's quite hard to grasp the enormity of it'). Information and Support overlapped, in that patients wanted someone to talk to, and to be listened to. These two themes were underpinned by issues of service delivery: 'Choice' (patient or professional to talk to, groups, one-to-one) and 'Involvement' (holistic care, partnership), which overlapped in terms of the opportunity to decide when and which interventions to access. CONCLUSIONS: People with RA report not only informational, but also emotional support needs at diagnosis. The potential for delivering emotional support to patients around the time of diagnosis warrants further exploration.


Subject(s)
Arthritis, Rheumatoid/psychology , Arthritis, Rheumatoid/therapy , Patient Satisfaction , Adult , Aged , Aged, 80 and over , Arthritis, Rheumatoid/diagnosis , Cohort Studies , Female , Focus Groups , Humans , Male , Middle Aged , Needs Assessment , Patient Education as Topic , Patient Participation , Social Support , Time Factors
6.
Musculoskeletal Care ; 6(2): 124-34, 2008 Jun.
Article in English | MEDLINE | ID: mdl-17922490

ABSTRACT

BACKGROUND: Following a diagnosis of rheumatoid arthritis (RA), patients have to adapt to lifelong, unpredictable but repeated episodes of pain and disability, potentially leading to permanent loss of function and its consequences on their lives. We established nurse clinics with the aim of supporting newly diagnosed RA patients in adapting to and managing their long-term condition. The aim of this study was to explore the content of clinic discussions in this new clinical service, in order to ascertain patients' needs upon diagnosis. METHODS: All clinic letters from the nurse to the family doctor were analysed. Every topic mentioned was systematically coded independently by a researcher and a patient research partner, who compared and agreed codes. Codes were organized into categories, and, finally, into overarching themes. RESULTS: Twenty-four patients had 74 appointment letters. A total of 79 codes were identified, from which ten categories emerged, and, finally, three overarching themes. The first theme related to 'Emotional support', which underpinned the other two themes and was discussed in almost all appointments. Issues included discussions about the emotional consequences of RA, needing time to adjust, frustration and fears for the future. The second theme 'Practicalities of the treatment of RA', included subordinate themes relating to the nature of RA, such as identity, cause, timeline, consequences and treatment. Medication issues were discussed and referrals to the multidisciplinary team were made. The final theme related to the 'Self-management of RA', and included discussions on physical symptoms and their management. CONCLUSIONS: The offer to attend a nurse clinic soon after diagnosis allowed RA patients to discuss a wide range of practical and self-management issues. However, most patients also took the opportunity and time to discuss emotional reactions and adaptations to diagnosis. The data suggest an unmet need for emotional support that a nurse clinic might be able to provide.


Subject(s)
Ambulatory Care/organization & administration , Arthritis, Rheumatoid/nursing , Nursing Services/organization & administration , Orthopedic Nursing/organization & administration , Adaptation, Psychological , Adult , Aged , Aged, 80 and over , Arthritis, Rheumatoid/complications , Arthritis, Rheumatoid/psychology , Cohort Studies , Emotions , Female , Humans , Male , Middle Aged , Needs Assessment , Self Care
7.
Arthritis Rheum ; 57(3): 429-39, 2007 Apr 15.
Article in English | MEDLINE | ID: mdl-17394228

ABSTRACT

OBJECTIVE: Fatigue is an important outcome for patients with rheumatoid arthritis (RA). The purpose of this study was to identify the scales being used to measure RA fatigue, and to systematically examine the evidence for their validation. METHODS: Articles measuring fatigue in RA were sought using the terms RA and fatigue, and RA and tiredness, plus scale, questionnaire, inventory, and checklist. Index articles reporting identifiable RA fatigue data were examined for the fatigue scale used. Index and validation articles for each scale were reviewed for evidence supporting scale validation to measure RA fatigue using a standardized checklist of content, face, criterion, and construct validity, reliability, and sensitivity to change. RESULTS: A total of 61 index articles used 23 different fatigue scales to measure RA fatigue on 71 occasions. Seventeen scales had either no data on validation in RA or limited evidence. Reasonable evidence of validation was identified for 6 scales, each also having some evidence of sensitivity to change: ordinal scales, the Short Form 36 vitality subscale, the Functional Assessment of Chronic Illness Therapy Fatigue Scale, visual analog scales (VAS), the Profile of Mood States, and the RA-specific Multidimensional Assessment of Fatigue scale (MAF). However, the 4 generic scales would benefit from further validation in patients with RA, the VAS requires standardization, and the MAF would benefit from further sensitivity data. CONCLUSION: It was possible to identify evidence of reasonable validation for 6 of 23 scales being used to measure RA fatigue. Researchers and clinicians should select scales to measure RA fatigue carefully.


Subject(s)
Arthritis, Rheumatoid/complications , Fatigue/etiology , Fatigue/physiopathology , Severity of Illness Index , Fatigue/diagnosis , Fatigue/psychology , Humans , Reproducibility of Results
8.
Anaesthesia ; 58(8): 787-91, 2003 Aug.
Article in English | MEDLINE | ID: mdl-12859473

ABSTRACT

Transurethral vaporisation of the prostate gland (TUVP) is an emerging surgical alternative to conventional electroresection (TURP). This study examined vesical pressure and fluid absorption during TUVP in 35 patients with benign prostatic hypertrophy. The irrigating fluid was a solution of glycine 1.5% and ethanol 1%. Intraoperative intravesical pressure was monitored continuously and absorption of irrigating fluid was detected by ethanol analysis in expired breath. The incidence of absorption during TUVP was 34%. Intravesical pressures were higher amongst patients who went on to absorb than amongst patients who did not. Combining data from the current study and from 35 patients in our previous investigation into TURP (Gray et al.: Anaesthesia 2001; 56: 461-4), urological trainees operated at higher mean pressure and for longer than their consultant colleagues and their resections were significantly more likely to result in absorption. The incidence of irrigating fluid absorption during trainees' operations appeared to be less using TUVP than using conventional TURP.


Subject(s)
Extravasation of Diagnostic and Therapeutic Materials/etiology , Prostatic Hyperplasia/surgery , Transurethral Resection of Prostate/adverse effects , Absorption , Biomarkers/analysis , Breath Tests , Clinical Competence , Ethanol/analysis , Extravasation of Diagnostic and Therapeutic Materials/physiopathology , Humans , Intraoperative Period , Male , Pressure , Risk Factors , Therapeutic Irrigation , Transurethral Resection of Prostate/methods , Urinary Bladder/physiopathology
9.
Rheumatology (Oxford) ; 42(3): 422-6, 2003 Mar.
Article in English | MEDLINE | ID: mdl-12626791

ABSTRACT

BACKGROUND: Patients with rheumatoid arthritis (RA) are traditionally seen regularly as out-patients, irrespective of whether it is appropriate or timely to see them. A randomized controlled trial has shown that over 2 yr, seeing patients only when they or their general practitioner (GP) request a review saves time and resources and is more convenient. This study aimed to assess clinical and psychological outcomes when the trial was extended to 4 yr. METHOD: A total of 209 patients were randomized into either 'routine review' (control) or 'no routine follow-up' but access to rapid review on request (direct access). Clinical and psychological status and patient satisfaction and confidence were reviewed after 24 and 48 months. RESULTS: Mean age at entry was 56 yr and mean disease duration 11 yr, and 134 patients remained in the study after 48 months. There were no differences between the groups, nor between those who completed the study and those who did not. There were no major differences in clinical or psychological status between the groups at 24 or 48 months. However, self-efficacy for function was stronger at 48 months for direct access patients (mean 64.0 vs 52.0, P=0.005), as was self-efficacy for other symptoms (mean 67.8 vs 59.3, P=0.009). Satisfaction at 48 months was increased in direct access compared with control (mean 8.7 vs 7.6, P=0.01) as was confidence in the system (8.9 vs 7.6, P<0.01). CONCLUSION: It is effective for patients with rheumatoid arthritis to have no regular follow-up, provided they have access to rapid review when they or their GP request it. Patients using a self-referral system of care had higher self-efficacy and greater satisfaction and confidence than those using the traditional system.


Subject(s)
Arthritis, Rheumatoid/therapy , Health Services Accessibility , Adult , Arthritis, Rheumatoid/psychology , England , Female , Follow-Up Studies , Humans , Long-Term Care/organization & administration , Male , Middle Aged , Outpatient Clinics, Hospital/organization & administration , Patient Satisfaction
10.
BJU Int ; 90(6): 573-8, 2002 Oct.
Article in English | MEDLINE | ID: mdl-12230620

ABSTRACT

OBJECTIVE: To relate the repeat length of the androgen-receptor CAG trinucleotide to the age of onset of prostate cancer, stage and grade of disease. PATIENTS AND METHODS: After obtaining ethical approval, 265 patients with locally confined or locally advanced/metastatic prostate cancer were identified and evaluated for age at diagnosis (< 65 years and > 75 years). DNA was extracted from peripheral blood lymphocytes and 1 micro g aliquots subjected to polymerase chain reaction using fluorescently labelled primers. Samples were then run on an ABI 377 gene scan analysis gel with an internal molecular weight marker. The length of the CAG repeat was determined by comparing the gene scan product size to samples where the CAG repeat length had been quantified using direct sequencing. The Kruskal-Wallis, Mann-Whitney and Wilcoxon two sample tests were used to analyse the data. RESULTS: The mean (range) length of the CAG repeat in the androgen receptor was 22.2 (10-31) in the younger and 22.5 (16-32) in the older group, and was not statistically different. There was no significant association between the CAG repeat length and the age of onset of prostate cancer (P = 0.568) or with stage (P = 0.577) and grade (P = 0.891) of prostate cancer. CONCLUSION: These results suggest that there is no correlation between the androgen receptor CAG repeat length and the age of onset, stage and grade of prostate cancer, confirming recent doubts from other similar studies of a suggested correlation between shorter androgen receptor CAG repeat and early onset and aggressiveness of prostate cancer.


Subject(s)
Prostatic Neoplasms/genetics , Receptors, Androgen/genetics , Trinucleotide Repeats/genetics , Age of Onset , Aged , Aged, 80 and over , Humans , Male , Middle Aged , Neoplasm Staging/methods , Polymerase Chain Reaction , Prostate-Specific Antigen/metabolism
11.
Rheumatology (Oxford) ; 41(1): 100-2, 2002 Jan.
Article in English | MEDLINE | ID: mdl-11792887

ABSTRACT

BACKGROUND: Many eligible people with arthritis do not receive disability benefits. Application forms are lengthy and complex, and doctors and nurses are often unsure which patients would qualify. AIM: To investigate how severe disability on the Health Assessment Questionnaire (HAQ) relates to successful application for disability benefits by people with osteoarthritis (OA) and rheumatoid arthritis (RA). METHOD: RA patients attending a hospital out-patient rheumatology clinic and patients with OA or RA in two general practices completed an HAQ and were asked about receipt of disability benefits. Those scoring 2 or more on the HAQ (severe disability) and not in receipt of benefits were offered professional help to complete applications for Disability Living Allowance (DLA) or Attendance Allowance (AA). RESULTS: Eighty per cent of patients with an HAQ score of 2 or more were already in receipt of benefits. Seventy-nine per cent of the new applicants applied successfully, the average benefit being in excess of 2580 pounds per annum. CONCLUSION: This initial study suggests that people who score 2 or more on the HAQ should be encouraged to apply for disability benefits. A test of the generalizability of these findings and the success rate associated with lower HAQ scores should be undertaken.


Subject(s)
Disability Evaluation , Health Status Indicators , Social Welfare/statistics & numerical data , Adult , Aged , Arthritis, Rheumatoid , Female , Humans , Male , Middle Aged , Osteoarthritis , Sampling Studies , Sensitivity and Specificity , Surveys and Questionnaires , United Kingdom
12.
Anaesthesia ; 56(5): 461-5, 2001 May.
Article in English | MEDLINE | ID: mdl-11350334

ABSTRACT

Intravesical pressure was measured continuously during 35 transurethral prostate resections using a fine suprapubic catheter. Absorption of irrigating fluid was detected by tagging it with ethanol and sampling the expired breath using an alcohol meter. Higher mean (SD) intravesical pressure was demonstrated in those patients who absorbed irrigating fluid (19.1 (7.7) mmHg) than in those who did not (12.4 (6.5) mmHg; p = 0.00004). Higher peak pressures were also demonstrated among absorbing patients. Traditional risk factors for fluid absorption, such as operator experience and resectate mass, were found to correlate with pressure exposure over time. Exposure to supranormal bladder pressure over time is the final common path for all causes of absorption. Vesical pressure monitoring may be a valuable feedback tool during difficult resections or operator training.


Subject(s)
Prostatic Hyperplasia/surgery , Prostatic Neoplasms/surgery , Transurethral Resection of Prostate/methods , Urinary Bladder/physiology , Absorption , Aged , Breath Tests , Ethanol , Humans , Male , Manometry , Risk Factors , Syndrome , Therapeutic Irrigation , Time Factors
13.
J Mol Biol ; 304(4): 645-56, 2000 Dec 08.
Article in English | MEDLINE | ID: mdl-11099386

ABSTRACT

Escherichia coli alkaline phosphatase (EC 3.1.3.1) belongs to a rare group of enzymes that exhibit intragenic complementation. When certain mutant versions of alkaline phosphatase are combined, the resulting heterodimeric enzymes exhibit a higher level of activity than would be expected based upon the relative activities of the parental enzymes. Nine previously identified alkaline phosphatase complementation mutants were re-examined in this work in order to determine a molecular explanation of intragenic complementation in this experimental system. The locations of these mutations were determined by DNA sequence analysis after PCR amplification of the phosphatase-negative phoA gene. Most of the mutations involved ligands to metal-binding sites. Each of the mutant enzymes was re-created by site-specific mutagenesis, expressed, purified, and kinetically characterized. To investigate cooperativity between the two subunits, we analyzed heterodimeric forms of some of the site-specific mutant enzymes. To enable the isolation of the heterodimeric alkaline phosphatase in pure form, the overall charge of one subunit was altered by replacing the C-terminal Lys residue with three Asp residues. This modification had no effect on the kinetic properties of the enzyme. Heterodimeric alkaline phosphatases were created using two methods: (1) in vitro formation by dissociation at acid pH followed by reassociation at slightly alkaline pH conditions in the presence of zinc and magnesium ions; and (2) in vivo expression from a plasmid carrying two different phoA genes. Increases in k(cat), as well as a large reduction in the p-nitrophenyl phosphate K(m) were observed for certain combinations of mutant enzymes. These results suggest that the structural assembly of E. coli alkaline phosphatase into the dimer induces cooperative interactions between the monomers necessary for the formation of the functional form of the holoenzyme.


Subject(s)
Alkaline Phosphatase/genetics , Alkaline Phosphatase/metabolism , Escherichia coli/enzymology , Escherichia coli/genetics , Genetic Complementation Test , Mutation/genetics , Alkaline Phosphatase/chemistry , Alkaline Phosphatase/isolation & purification , Amino Acid Substitution/genetics , Binding Sites , Chromatography, High Pressure Liquid , Dimerization , Genes, Bacterial/genetics , Holoenzymes/chemistry , Holoenzymes/genetics , Holoenzymes/isolation & purification , Holoenzymes/metabolism , Hydrogen-Ion Concentration , Kinetics , Magnesium/metabolism , Models, Molecular , Protein Structure, Quaternary , Protein Subunits , Static Electricity , Zinc/metabolism
14.
Br J Gen Pract ; 50(457): 645-8, 2000 Aug.
Article in English | MEDLINE | ID: mdl-11042917

ABSTRACT

BACKGROUND: General practitioners (GPs) integrate physical, psychological, and social factors when assessing patients, particularly those with chronic diseases. Recently, the emphasis has been on assessment of depression but not of other factors. AIM: To determine functional disability, psychological morbidity, social situation, and use of health and social services in patients with osteoarthritis and examine GP knowledge of these factors. METHOD: Two hundred patients completed a validated postal questionnaire about functional disability (Health Assessment Questionnaire [HAQ]), mood (Hospital Anxiety and Depression Scale [HAD]), employment status, who they lived with, welfare benefits received, and use of health and social services. A similar questionnaire was completed by the patient's GP, including a HAQ. However, a three-point scale was used to assess depression and anxiety. RESULTS: Forty-seven per cent of patients were moderately or severely disabled (HAQ > 1). GPs underestimated functional disability: mean patient HAQ = 1.04 (95% confidence interval [CI] = 0.92-1.16), mean GP HAQ = 0.74 (95% CI = 0.65-0.83), and there was low correlation between patient and GP scores (kappa = 0.24). There was moderate prevalence of depression and high prevalence of anxiety, which the GP often did not recognise: patient depression = 8.3% (95% CI = 4.1%-12.8%), GP depression = 6.0% (95% CI = 2.4%-9.6%), kappa = 0.11; patient anxiety = 24.4% (95% CI = 17.8%-31.0%), GP anxiety = 11.9% (95% CI = 6.9%-16.9%), kappa = 0.19. Only 46% of severely disabled patients (HAQ > 2) were receiving disability welfare benefits. GPs were often unaware of welfare benefits received or the involvement of other professionals. CONCLUSION: GPs frequently lack knowledge about functional disability, social factors, and anxiety as well as depression in their patients with osteoarthritis.


Subject(s)
Anxiety/diagnosis , Depression/diagnosis , Family Practice , Osteoarthritis/complications , Adult , Aged , Aged, 80 and over , Anxiety/etiology , Depression/etiology , Disability Evaluation , Humans , Middle Aged , Osteoarthritis/diagnosis , Socioeconomic Factors , Surveys and Questionnaires , Treatment Outcome
15.
Health Serv J ; 110(5725): 30-1, 2000 Oct 05.
Article in English | MEDLINE | ID: mdl-11185342

ABSTRACT

A 12-month study of emergency medical admissions at one trust suggests most readmissions could not be avoided. The re-admission rate within 28 days was 10 per cent, of which 5 per cent were found to be preventable. Readmissions were higher among smokers, men and people living in hostels. The study found no evidence of increased readmissions in winter.


Subject(s)
Hospitals, Public/statistics & numerical data , Patient Readmission/statistics & numerical data , Adolescent , Adult , Aged , Female , Health Services Research , Hospitals, Public/standards , Humans , Male , Middle Aged , Quality Indicators, Health Care , State Medicine , United Kingdom
17.
J Mol Biol ; 277(3): 647-62, 1998 Apr 03.
Article in English | MEDLINE | ID: mdl-9533886

ABSTRACT

Escherichia coli alkaline phosphatase (EC 3.1.3.1) is a non-specific phosphomonoesterase that catalyzes the hydrolysis reaction via a phosphoseryl intermediate to produce inorganic phosphate and the corresponding alcohol. We investigated the nature of the primary nucleophile, fulfilled by the deprotonated Ser102, in the catalytic mechanism by mutating this residue to glycine, alanine and cysteine. The efficiencies of the S102G, S102A and S102C enzymes were 6 x 10(5)-fold, 10(5)-fold and 10(4)-fold lower than the wild-type enzyme, respectively, as measured by the kcat/Km ratio, still substantially higher than the non-catalyzed reaction. In order to investigate the structural details of the altered active site, the enzymes were crystallized and their structures determined. The enzymes crystallized in a new crystal form corresponding to the space group P6322. Each structure has phosphate at each active site and shows little departure from the wild-type model. For the S102G and S102A enzymes, the phosphate occupies the same position as in the wild-type enzyme, while in the S102C enzyme it is displaced by 2.5 A. This kinetic and structural study suggests an explanation for differences in catalytic efficiency of the mutant enzymes and provides a means to study the nature and strength of different nucleophiles in the same environment. The analysis of these results provides insight into the mechanisms of other classes of phosphatases that do not utilize a serine nucleophile.


Subject(s)
Alkaline Phosphatase/chemistry , Alkaline Phosphatase/metabolism , Escherichia coli/enzymology , Serine/chemistry , Serine/metabolism , Alanine/chemistry , Alanine/genetics , Alanine/metabolism , Alkaline Phosphatase/genetics , Binding Sites , Catalysis , Crystallography, X-Ray , Cysteine/chemistry , Cysteine/genetics , Cysteine/metabolism , Glycine/chemistry , Glycine/genetics , Glycine/metabolism , Hydrogen-Ion Concentration , Kinetics , Models, Molecular , Mutagenesis, Site-Directed , Phosphates , Protein Conformation , Serine/genetics
18.
Protein Expr Purif ; 10(3): 365-72, 1997 Aug.
Article in English | MEDLINE | ID: mdl-9268684

ABSTRACT

Bacillus cereus secretes a nonspecific phospholipase C (PLC) that catalyzes the hydrolysis of phospholipids to yield diacylglycerol and a phosphate monoester. B. cereus PLC has been overexpressed with its signal sequence in Escherichia coli using a T7 expression system. The expressed enzyme formed intracellular inclusion bodies which were solubilized in the presence of 8 M urea. Renaturation was initiated by gradual removal of urea and addition of zinc ions. The signal peptide was specifically cleaved by a protease, clostripain, added when the urea concentration was 1.5 M. Factors that led to protein reaggregation included rapid removal of urea, use of Tris instead of barbital buffer, and presence of the signal peptide when the urea concentration was below 1.5 M. The folded protein was purified by Q-Sepharose Fast flow chromatography to yield a preparation > 99% pure. The final yield of active enzyme was 30-40 mg per liter of culture. The recombinant PLC exhibited biochemical and kinetic properties identical to those of extracellularly produced PLC from B. cereus. Site-specific mutagenesis of Asn-134 was carried out as a test of the general effectiveness of the refolding procedure.


Subject(s)
Bacillus cereus/enzymology , Cloning, Molecular , Protein Folding , Type C Phospholipases/genetics , Electrophoresis, Polyacrylamide Gel , Escherichia coli/genetics , Gene Expression , Genetic Vectors/genetics , Kinetics , Phospholipids/chemistry , Phospholipids/metabolism , Protein Denaturation , Recombinant Proteins/chemistry , Recombinant Proteins/isolation & purification , Recombinant Proteins/metabolism , Substrate Specificity , Type C Phospholipases/chemistry , Type C Phospholipases/isolation & purification , Type C Phospholipases/metabolism , Urea
20.
Pathology ; 29(4): 431-3, 1997 Nov.
Article in English | MEDLINE | ID: mdl-9423231

ABSTRACT

Myofibroblastoma of the breast is an uncommon stromal tumor most often found in older men. It usually presents as a solitary well-circumscribed breast lesion consisting of slender bipolar spindle cells and broad bands of hyalinised collagen. This is the first documented case of myofibroblastoma of the breast in Australia. Found in a 71-year-old man, this case demonstrates many of the typical features of this entity. A history of previous trauma to the chest wall was present in this case, a finding only rarely associated with this lesion.


Subject(s)
Breast Neoplasms, Male/pathology , Neoplasms, Muscle Tissue/pathology , Aged , Australia , Biomarkers/analysis , Breast Neoplasms, Male/chemistry , Desmin/analysis , Hemosiderin/analysis , Humans , Immunohistochemistry , Male , Neoplasms, Muscle Tissue/chemistry
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