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Development of a topical bacteriophage gel targeting
Cutibacterium acnes
for acne prone skin and results of a phase 1 cosmetic randomized clinical trial. SKIN HEALTH AND DISEASE 2022; 2:e93. [PMID: 35677920 PMCID: PMC9168013 DOI: 10.1002/ski2.93] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/02/2022] [Accepted: 01/04/2022] [Indexed: 11/11/2022]
Abstract
Background Topical antibiotics are frequently used to treat acne vulgaris. Their prolonged use, often for longer durations than recommended, has led to antibiotic resistance in Cutibacterium acnes (C. acnes), a bacterium implicated in acne pathophysiology. Bacteriophage (phage), which specifically target C. acnes by a different mechanism of action and do not harm potentially beneficial bacteria, may offer an alternative approach for improvement of the appearance of acne prone skin. Objectives To identify and characterize C. acnes targeting phage, carry out a comprehensive preclinical safety evaluation of phages selected for further development and examine their safety, tolerability and ability to target facial C. acnes when applied topically in a cosmetic clinical study including participants with mild‐to‐moderate acne. Methods Phages were isolated by conventional microbiological methods also used to examine their breadth of host range on different C. acnes strains and specificity to this bacterial species. Safety assessment of three selected phages was carried out by complete genomic analysis to assure the absence of undesired sequences and by ex vivo models employed to evaluate the safety, irritability and potential systemic bioavailability of phage applied topically. A randomized, controlled clinical study assessed safety, tolerability and efficacy in targeting facial C. acnes. Results Wide host range phages that also target antibiotic resistant C. acnes were identified. Their genomes were shown to be free of undesired genes. The three‐phage cocktail, BX001, was not irritant to human skin or ocular tissues in ex vivo models and did not permeate through human epidermis. In a cosmetic clinical study, topically applied BX001 was safe and well tolerated and reduced the facial burden of C. acnes. Conclusions Combined in silico and ex vivo approaches successfully predicted the observed safety and efficacy of C. acnes targeting phage when these were topically administered in a well‐controlled cosmetic clinical study.
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OP0191-PARE DEVELOPMENT OF A PUBLIC AND PATIENT INVOLVEMENT (PPI) RESEARCH NETWORK FOR PEOPLE WHO HAVE RHEUMATIC CONDITIONS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Public and patient involvement (PPI) improves quality and relevance of research (1). PPI is advocated by policy makers and funding bodies and is supported by EULAR (2). Arthritis Research Limerick (ARL) is a partnership between researchers at the University of Limerick and clinicians at University Hospitals Limerick. PPI representatives have been involved in ARL projects, however no formal PPI network had been established prior to 2020. The need for a formal PPI network to collaborate with ARL was identified by both ARL and patient representatives. This need arose from a joint ambition to promote meaningful involvement of the public and patients in ARL projects and to develop a platform through which researchers and PPI representatives could collaboratively set research priorities.Objectives:The aim of this project was to create a formal PPI network to engage with people living with rheumatic and musculoskeletal diseases (RMDs) and their families and to identify collaborative research opportunities between ARL and PPI representatives.Methods:A face-to-face PPI seminar was planned for October 2020. The seminar consisted of speakers from ARL providing an overview of research projects and a World Café research ideas session. Funding was obtained through a competitive, peer-review funding call from the PPI Ignite group at the University of Limerick to support the PPI seminar. The funding application was a joint application between ARL members and a PPI partner (iCAN - Irish Children’s Arthritis Network). The seminar was advertised through national patient organisations (iCAN and Arthritis Ireland), social media and ARL research networks.Results:Due to Covid-19 public health restrictions the PPI seminar was held virtually. The ARL PPI inaugural seminar was attended by N=19 researchers and people living with RMDs. The seminar speakers included ARL researchers and a PPI representative. The World Café event was modified to adapt to the virtual seminar delivery. Research ideas were noted by the seminar organiser and summarised for attendees at the end of the research ideas and priorities session. An ARL PPI mailing list was set-up post seminar as a means of communicating with seminar attendees and will serve as a formal PPI network for ARL. Research updates and opportunities will be communicated via this formal network to people living with RMDs and researchers alike.Conclusion:This was the first PPI seminar organised by ARL in collaboration with a PPI seminar, and has led to the creation of a formal PPI network. Delivery mode of the PPI seminar was changed due to Covid-19 public health restrictions. This change may also have impacted engagement and attendance at the PPI seminar, given that virtual events are not accessible to all of the RMD population. Future PPI seminars will consider a hybrid approach of face-to-face and virtual attendance, to enhance accessibility. A formal PPI communication network has been established. Future work will focus future collaborative opportunities between the PPI panel and the ARL group, including project development, co-led research funding applications and joint research dissemination.References:[1]INVOLVE. (2012). Briefing notes for researchers: Involving the public in NHS, public health and social care research. Retrieved from www.invo.org.uk 7th January 2020.[2]de Wit MPT, Berlo SE, Aanerud GJ, et al (2011). European League Against Rheumatism recommendations for the inclusion of patient representatives in scientific projects. Annals of the Rheumatic Diseases 70:722-726Disclosure of Interests:None declared
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AB0872-HPR IMPACT OF COVID-19 ON A PHYSICAL ACTIVITY FEASIBILITY PILOT STUDY: THE PIPPRA EXPERIENCE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:The PIPPRA (Physiotherapist-led Intervention to Promote Physical Activity in Rheumatoid Arthritis) project is a feasibility project examining the impact of a physical activity behaviour change intervention in people who have rheumatoid arthritis (RA). The PIPPRA study recruitment commenced in October 2019, with participant assessment and intervention commencing in November 2019. In the Republic of Ireland people who have RA are categorised as high risk category for Covid-19, due to immunosuppression [1], although this categorisation contrasts with EULAR’s provisional recommendations [2].Objectives:To examine the impact of the Covid-19 pandemic and public health restrictions on a pilot randomised controlled feasibility study in 2020.Methods:Participants (aged 18 years+, diagnosis of RA, independently mobile and low levels of physical activity [3]) were recruited from a rheumatology clinic at an urban hospital. Target recruitment was four participants per month for one year (N=48). Assessments were planned at baseline, eight and twenty-four weeks (N=144). Participants were randomised to intervention group or control group. The intervention group received four 1:1 sixty minute sessions with a physiotherapist (N=96). The intervention was delivered over eight weeks. Intervention and control groups received a physical activity information leaflet.Results:The Covid-19 pandemic and associated public health restrictions forced the study to be formally paused in April 2020 and the study formally resumed in August 2020. N=48 participants were recruited between October 2019 and March 2020 (six months). N=20 participants have commenced in the study, N=16 are awaiting baseline assessment, N=6 withdrew and N=6 were lost to follow-up prior to baseline. Trial protocol planned for the delivery of N=55 assessments and N=36 intervention sessions for participants who had commenced in the study. N=22 assessments and N=26 intervention sessions were delivered between November 2019 and March 2020. N=5 assessments and N=6 intervention sessions were conducted between August and October 2020. No assessment or intervention delivery occurred in November-December 2020 due to participant hesitancy in attending for assessment and/or intervention with increased public health restrictions. The impact of Covid-19 restrictions resulted in N=33 (60%) deviations from assessment protocol and N=10 (27%) deviations from intervention delivery protocol (Figure 1).Figure 1.Deviations from assessment and intervention protocol in the PIPPRA studyConclusion:The Covid-19 pandemic has had a significant impact on the delivery of the PIPPRA study. Feasibility study outcomes, including participant retention rate, and study delivery as per protocol, have been affected due to the Covid-19 pandemic. Participant reluctance to attend face-to-face sessions demonstrates the need to consider alternative methods of delivery, e.g. virtual delivery of interventions, where attending in person is not acceptable to participants [4], in future studies.References:[1]Health Service Executive. (2019). People at higher risk from COVID-19.Accessed 5th Jan 2020 https://www2.hse.ie/conditions/coronavirus/people-at-higher-risk.html.[2]Landewé RB et al (2020). EULAR provisional recommendations for the management of rheumatic and musculoskeletal diseases in the context of SARS-CoV-2. Annals of the Rheumatic Diseases 79:851-858.[3]Godin, G. (2011). The Godin-Shephard leisure-time physical activity questionnaire. The Health & Fitness Journal of Canada, 4(1):18-22.[4]Inan, OT et al. (2020). Digitizing clinical trials. npj Digit. Med. 3:10.Disclosure of Interests:None declared
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P1410Comparison of the relative radiation reduction of collimation and open settings during radiofrequency ablation procedures as assessed by real-time radiation detectors. Europace 2017. [DOI: 10.1093/ehjci/eux158.038] [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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Evidence of Overlapping Infections of Dengue, Malaria and Typhoid in Febrile Patients Attending a Tertiary Health Facility in Uyo, South-South Nigeria. ACTA ACUST UNITED AC 2016. [DOI: 10.9734/bjmmr/2016/27668] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pathologically confirmed breast cancer in Malawi: a descriptive study: Clinical profile of breast cancer. Malawi Med J 2015; 27:10-2. [PMID: 26137191 DOI: 10.4314/mmj.v27i1.3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Breast cancer is the most common female cancer in Africa, yet no published studies have investigated breast cancer in Malawi. Understanding the clinical profile of breast cancer is important to develop early diagnosis efforts. AIM To describe clinical and pathological characteristics of breast specimens from a pathology laboratory at a national teaching hospital. METHODS Secondary analysis of pathology reports from July 2011 to September 2013. RESULTS Among 85 breast cancer cases, 55% were < 50 years. Median tumor size was 4 cm and 49% were grade 3. Median symptom duration was eight months. CONCLUSIONS Malawian women with breast cancer commonly have long symptom durations prior to diagnosis, young age, and poorly differentiated tumors. Improved clinical and pathological characterization, including hormone receptor status, are urgently needed to better understand this disease in Malawi.
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Abstracts of Presentations at the International Conference on Basic and Clinical Multimodal Imaging (BaCI), a Joint Conference of the International Society for Neuroimaging in Psychiatry (ISNIP), the International Society for Functional Source Imaging (ISFSI), the International Society for Bioelectromagnetism (ISBEM), the International Society for Brain Electromagnetic Topography (ISBET), and the EEG and Clinical Neuroscience Society (ECNS), in Geneva, Switzerland, September 5-8, 2013. Clin EEG Neurosci 2013; 44:1550059413507209. [PMID: 24368763 DOI: 10.1177/1550059413507209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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A clinical study to compare the efficacy and safety of pregabalin sustained release formulation with pregabalin immediate release formulation in patients of diabetic peripheral neuropathic pain. Indian J Endocrinol Metab 2012; 16:S477-S479. [PMID: 23565472 PMCID: PMC3603120 DOI: 10.4103/2230-8210.104137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To compare the efficacy and safety of sustained release (SR) formulation of pregabalin with immediate release (IR) formulation in patient with diabetic peripheral neuropathic pain. MATERIALS AND METHODS In this open label, randomized, comparative, multicentric study, the primary efficacy measure was reduction in visual analogue scale (VAS) of short form McGill pain questionnaire (SF-MPQ) score from baseline to last visit. The secondary evaluation measures included reduction in SF-MPQ descriptive score and present pain intensity score and change in clinical global impression - improvement of illness (CGI-I) and clinical global impression - severity of illness (CGI-S) from baseline to last visit. Total duration of the study was 12 weeks. Safety evaluation was done by recording treatment emergent adverse events and laboratory investigations at baseline and end of treatment. RESULTS Of 265 randomized patients, 133 received pregabalin SR tablets and 132 pregabalin IR. Patients randomized to both treatments responded to respective treatments. The least square means of VAS score in both the groups were reduced significantly (P <0.01). Reduction in both groups was similar (P = ns). At the end of the trial in both the groups, there was a significant reduction in the SF-MPQ descriptive score (P <0.01), severity of illness as well as clinically significant improvement in the symptoms. Difference between the groups for CGI-I (P = 0.37) and CGI-S (P = 0.41) score was not statistically significant. Treatment in both the groups was found safe and well tolerated. CONCLUSION The study shows that the pregabalin SR is safe and effective in patients of diabetic peripheral neuropathic pain. The results of the study demonstrated that pregabalin SR has comparable efficacy and safety as pregabalin IR.
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Abstract
Mesenchymal cell tumours of the gastrointestinal tract are rare in western society. Gastrointestinal stromal tumour (GIST) is the most common of this group of tumours. Gastric schwannoma is rarer, accounting for only 0.2% of all gastric tumours and 4% of all benign gastric neoplasms. Indeed, schwannoma has only been recognized as a primary gastrointestinal tumour in the last 20 years through advances in pathological techniques. We report a rare case of gastric schwannoma, the endoscopic and radiological features of which were indistinguishable from a GIST. Due to the diagnostic uncertainty, surgical resection is the treatment of choice. Development of more reliable diagnostic methods, such as endoscopic core biopsy, may help the accuracy of preoperative diagnosis.
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Achieving a clinically relevant composite outcome of an HbA1c of <7% without weight gain or hypoglycaemia in type 2 diabetes: a meta-analysis of the liraglutide clinical trial programme. Diabetes Obes Metab 2012; 14:77-82. [PMID: 21883806 DOI: 10.1111/j.1463-1326.2011.01493.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
AIM Effective type 2 diabetes management requires a multifactorial approach extending beyond glycaemic control. Clinical practice guidelines suggest targets for HbA1c, blood pressure and lipids, and emphasize weight reduction and avoiding hypoglycaemia. The phase 3 clinical trial programme for liraglutide, a human glucagon-like peptide 1 analogue, showed significant improvements in HbA1c and weight with a low risk of hypoglycaemia compared to other diabetes therapies. In this context, we performed a meta-analysis of data from these trials evaluating the proportion of patients achieving a clinically relevant composite measure of diabetes control consisting of an HbA1c <7% without weight gain or hypoglycaemia. METHODS A prespecified meta-analysis was performed on 26-week patient-level data from seven trials (N = 4625) evaluating liraglutide with commonly used therapies for type 2 diabetes: glimepiride, rosiglitazone, glargine, exenatide, sitagliptin or placebo, adjusting for baseline HbA1c and weight, for a composite outcome of HbA1c <7.0%, no weight gain and no hypoglycaemic events. RESULTS At 26 weeks, 40% of the liraglutide 1.8 mg group, 32% of the liraglutide 1.2 mg group and 6-25% of comparators (6% rosiglitazone, 8% glimepiride, 15% glargine, 25% exenatide, 11% sitagliptin, 8% placebo) achieved this composite outcome. Odds ratios favoured liraglutide 1.8 mg by 2.0- to 10.5-fold over comparators. CONCLUSIONS As assessed by the composite outcome of HbA1c <7%, no hypoglycaemia and no weight gain, liraglutide was clearly superior to the other commonly used therapies. However, the long-term clinical impact of this observation remains to be shown.
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Assessment of Sudomotor Function to Predict Future Abnormalities of Glucose Tolerance in at Risk Population. ACTA ACUST UNITED AC 2011. [DOI: 10.4172/2155-6156.1000125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Analysis of beta globin mutations in the Indian population: presence of rare and novel mutations and region-wise heterogeneity. Clin Genet 2008; 73:331-7. [PMID: 18294253 DOI: 10.1111/j.1399-0004.2008.00973.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Beta thalassaemia is a major public health problem in India. A comprehensive database of the spectrum of mutations causing beta thalassaemia in the Indian population is necessary. This study in which a large number of patients with beta thalassaemia including those from certain regions that were not explored earlier shows a great heterogeneity of mutations. Several novel and rare alleles that have not been reported earlier in the Indian population have been identified, and mutations differ in frequency in different regions of the country. This information on the spectrum of mutations has implications for the control of beta thalassaemia in a population with complex ethnic background and also on the genotype-phenotype correlation of the disease.
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Abstracts of original contributions ASNC 2004 9th annual scientific session September 3-–October 3, 2004 New York, New York. J Nucl Cardiol 2004. [DOI: 10.1007/bf02974964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
DESIGN A selection of primary and transformed cell types were evaluated for their susceptibility to infection with human herpesvirus 8 (HHV-8)/Kaposi's sarcoma-associated herpesvirus. METHODS Sources of HHV-8 included Kaposi's sarcoma lesion punch biopsies that were either cocultured directly with target cells or that were first cocultured with human lymphocytes to derive HHV-8-containing fluids that were inoculated onto target cells. HHV-8 was also obtained from primary effusion lymphoma-derived cell lines. Techniques to detect infection included the PCR, immunofluorescence assays and in situ hybridization. RESULTS Susceptible cells included human umbilical cord blood mononuclear cells (UCMC), adult CD19 B cells, macrophages and certain endothelial cells of human and animal origin, including some that are transformed with human papilloma virus type 16 E6 and E7 genes. The infection of lymphocytes did not yield established lymphoblastoid cell lines (LCL) and virus infection persisted for only 4-7 days. However, long-term HHV-8 infection of UCMC could be achieved by coinfection with Epstein-Barr virus. HHV-8 could also infect UCMC LCL recently derived by Epstein-Barr virus transformation, but long-established LCL could not be infected with HHV-8. CONCLUSIONS These data provide further biological evidence in cell culture for the limited cellular host range of HHV-8 to CD19 B cells, macrophages, and certain endothelial cells.
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Underfunded and under fire. Canada's health system being systematically eroded. REVOLUTION (OAKLAND, CALIF.) 2000; 1:12-3, 15. [PMID: 12018078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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Abstract
1. Mechanical fluctuations of the cell membrane (CMFs) in human erythrocytes reflect the bending deformability of the membrane-skeleton complex. These fluctuations were monitored by time-dependent light scattering from a small area ( approximately 0. 25 microm2) of the cell surface by a method based on point dark field microscopy. 2. Exposure of red blood cells (RBCs) to adrenaline (epinephrine) and isoproterenol (isoprenaline) resulted in up to a 45 % increase in the maximal fluctuation amplitude and up to a 35 % increase in the half-width of the amplitude distribution. The power spectra of membrane fluctuations of control and treated cells revealed that adrenaline stimulated only the low frequency component (0.3-3 Hz). Analysis of the dose-response curves of beta-adrenergic agonists yielded an EC50 of 5 x 10-9 and 1 x 10-11 M for adrenaline and isoproterenol, respectively. Propranolol had an inhibitory effect on the stimulatory effect of isoproterenol. These findings show a potency order of propranolol > isoproterenol > adrenaline. 3. The stimulatory effect of adrenaline was a temporal one, reaching its maximal level after 20-30 min but being abolished after 60 min. However, in the presence of 3-isobutyl-1-methylxanthine, a partial stimulatory effect was maintained even after 60 min. Pentoxifylline and 8-bromo-cAMP elevated CMFs. However, exposure of ATP-depleted erythrocytes to adrenaline or 8-bromo-cAMP did not yield any elevation in CMFs. These findings suggest that the beta-agonist effect on CMFs is transduced via a cAMP-dependent pathway. 4. Deoxygenation decreased CMFs and filterability of erythrocytes by approximately 30 %. The stimulatory effect of isoproterenol on CMFs was 2.2-fold higher in deoxygenated RBCs than in oxygenated cells. 5. Exposure of RBCs to adrenaline resulted in a concentration-dependent increase in RBC filterability, demonstrating a linear relationship between CMFs and filterability, under the same exposure conditions to adrenaline. These findings suggest that beta-adrenergic agonists may improve passage of erythrocytes through microvasculature, enhancing oxygen delivery to tissues, especially under situations of reduced oxygen tension for periods longer than 20 min.
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Abstract
This study examines the prevalence of violence in a non-randomly selected population of 337 inner city school students, the relationship between exposure to violence and symptoms of depression and hostility, and demographic differences in exposure to and effects of traumatic violence. Students responded to an anonymous survey asking them to enumerate how many times they had experienced each of six types of traumatic violence. Sixty-two per cent of students were exposed to an average of 3.0541 of the six types of violence listed. Exposure to most types of violence were highly intercorrelated. Males experienced more exposure to violence than females. Exposure to violence was predictive of hostility for both gender groups, and predictive of depression for females. Implications of exposure to traumatic violence on adolescent development are discussed.
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The influence of human immunodeficiency virus-1 on hematopoiesis. Blood 1998; 91:1479-95. [PMID: 9473211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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Olfactory dysfunction in type I pseudohypoparathyroidism: dissociation from Gs alpha protein deficiency. J Clin Endocrinol Metab 1997; 82:247-50. [PMID: 8989268 DOI: 10.1210/jcem.82.1.3713] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The discovery of variably decreased olfactory ability in Type Ia pseudohypoparathyroidism (PHP), a syndrome in which generalized hormone resistance is associated with deficiency of the alpha chain of the stimulatory guanine nucleotide-binding protein (Gs alpha) of adenylyl cyclase, has been used to support the hypothesis that Gs alpha plays a major role in human olfactory transduction. However, only a limited number of olfactory tests have been administered to such patients, and these patients have other problems that might cause or contribute to their olfactory dysfunction, including an unusual constellation of skeletal and developmental deficits termed Albright hereditary osteodystrophy (AHO). In this study, we administered tests of odor detection, identification, and memory to (i) 13 patients with Type Ia PHP; (ii) 8 patients with Type Ib PHP; (iii) 7 patients with pseudopseudohypoparathyroidism (PPHP); and (iv) 3 sets of normal controls matched to these groups on the basis of age, gender, and smoking history. Although we confirm that PHP Type Ia patients evidence olfactory dysfunction, we also demonstrate that (i) patients with Type Ib PHP, who have no AHO, no generalized hormone resistance, and normal Gs alpha activity, also evidence olfactory dysfunction relative to matched controls; and (ii) patients with PPHP, who have AHO, no generalized hormone resistance, and deficient Gs alpha protein activity, have relatively normal olfactory function. These observations do not support the hypothesis that the olfactory dysfunction associated with PHP is the result of generalized Gs alpha protein deficiency and imply that other mechanisms (e.g. ones associated with PTH or PTHrP resistance) are responsible for the olfactory deficits of this disorder.
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Characteristics and sexual behaviour of individuals attending the sexually transmitted diseases clinic at Queen Elizabeth Central Hospital Blantyre, Malawi. THE CENTRAL AFRICAN JOURNAL OF MEDICINE 1997; 43:6-11. [PMID: 9185372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Characteristics and sexual behaviour, knowledge of HIV and knowledge of attitudes to and use of the condom were assessed by a questionnaire survey of a sample of 734 patients attending a sexually transmitted diseases clinic at the Queen Elizabeth Central Hospital, Blantyre, Malawi. The male respondents had a mean age of 27.4 years compared with 24.5 for the women. Nearly two thirds of either sex reported more than one sexual partner during the previous year. Thirty one percent of the females and 43% of the males admitted having ever exchanged money directly for sex. Knowledge about HIV transmission and prevention, and the condom was generally good. Only 24% male and 45% female respondents reported having ever used the condom, with 27% and 43% respectively using it sometimes. No respondent used the condom always. The most common reported reason for not using the condom was partner refusal. Many of the respondents exhibited a high level of HIV risk behaviour.
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Abstract
To investigate meal-induced changes in hepatic fat and carbohydrate metabolism in rats, hepatic venous, portal venous, and aortal plasma levels of several metabolites as well as changes in hepatic glycogen and lactate content were measured during and after the first nocturnal meal following a 12-h fast. The rats were fed a diet with about 46%, 41%, and 13% of the total energy (approximately 16.5 kJ/g) derived from carbohydrates, fats, and protein, respectively. During the later part of the meal and thereafter, plasma triglyceride level increased in all blood vessels. After a transient initial decrease, portal venous and aortal nonesterified fatty acid (NEFA) levels, net hepatic NEFA uptake, and hepatic beta-hydroxybutyrate (BHB) production increased and reached fasting (meal onset) values by 30 min after the meal. Although liver glycogen did not change significantly, the liver released glucose continuously. The liver initially accumulated lactate and maintained a high lactate concentration despite switching from lactate uptake to net release of lactate around 10 min into the meal. Taken together, these data indicate that hepatic glycolysis, gluconeogenesis, and considerable fatty acid oxidation occur concurrently in rat liver during and after a fat- and carbohydrate-rich meal. The findings are relevant to contemporary hypotheses of the metabolic control of eating and, in particular, to hypotheses linking hepatic fatty acid oxidation to postprandial satiety.
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Clinical, epidemiological and natural history study of HIV-1 infection among seropositive homo/bisexuals in Israel, 1986-92. A collaborative study in three medical centers. ISRAEL JOURNAL OF MEDICAL SCIENCES 1993; 29:15-8. [PMID: 8244675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The clinical and epidemiological aspects of HIV-1 seropositive homo/bisexuals at three AIDS screening clinics in Israel were analyzed retrospectively for the 4-year period 1986-92. Of 1,526 individuals who attended the clinics a total of 238 (15.5%) were found to be HIV-1 seropositive; 182 seropositives were followed for a mean of 3.3 (+/- 2.6) person-years. The incidence of AIDS in this cohort was 33% over 4 years, a rate of 9.8/100 person-years. Half of all HIV-1 seropositives are estimated to have been infected outside Israel. On initial presentation 144 (62%) were asymptomatic and 94 (38%) were symptomatic. CD4 levels were > 500 ml3 in 87 (36%), 200-500 ml3 in 66 (28%) and < 200 ml3 in 45 (19%) individuals. The pattern of clinical presentations was similar to that seen in the West, but mycobacterial infections were rare. A cohort of 86 homo/bisexuals with full-blown AIDS was followed for a mean of 2.2 person-years. The mortality rate in this group was 53.5% over 4 years, a rate of 26/100 person-years. Thus, HIV infection among Israeli homosexuals ceased to be a rarity as it took the pattern of AIDS in the West, with some special features such as the late presentation of patients for medical treatment and the paucity of mycobacterial diseases complicating the disease.
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The frequency and incidence of low back pain/sciatica in an urban population. THE NEW ZEALAND MEDICAL JOURNAL 1991; 104:424-6. [PMID: 1833679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The frequency, incidence and severity of low back pain was assessed by a random telephone survey of 314 urban New Zealanders. Relationships between the severity and frequency of low back pain and referred lower extremity pain and other variables such as occupation, recreation, age, sex and predominant working posture was analysed. Point incidence was 17.5%, weekly incidence 33.4%, yearly incidence 63.7% and total incidence 79%. Some 28.3% get frequent minor episodes and 6.4% get frequent severe episodes of low back pain. Nearly 50% suffer the initial episode before the age of 30 years. Of those suffering low back pain within the last seven days, 14.3% experience reference below the knee and the total incidence of below knee pain was 13.7%. Over half (51.6%) have pain that has lasted seven days or less, but a third have had pain for longer than seven weeks. No correlation between the incidence of low back pain and referred pain and occupational posture was found. In conclusion, this telephone survey established that the incidence of low back pain in New Zealand is similar to that reported in overseas studies. The survey could not establish differences in low back pain characteristics across different social groupings, nor could a relationship between occupational posture and low back pain be established.
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Abstract
Nasally administered (IN) insulin has been advocated as a potentially useful alternative to subcutaneously administered regular insulin because of its more rapid onset and time to peak action and its shorter duration of action. This study further defines the pharmacodynamics of IN insulin by using a euglycemic clamp technique to determine the bioavailability of IN insulin as compared with intravenous (IV) insulin, and to ascertain whether multiple sequentially administered doses of IN insulin alter pharmacodynamics. Eight normal volunteers received 2 control doses of IV insulin (0.05 U/kg), and 3 high doses (0.7 U/kg) and 3 low doses (0.35 U/kg) of IN insulin with an absorption enhancer (tauro-24,25 dihydrofusidate) given sequentially over a 2 day period. A euglycemic clamp was performed with a Biostator (Ames) that infused dextrose to keep the subject's blood glucose at his fasting level. Analysis of dextrose infusion curves for the low and high doses of IN insulin revealed an onset of action of 9.4 +/- 0.4 and 10.5 +/- 0.3 minutes, time to peak action of 20.6 +/- 5.6 and 23.7 +/- 4.4 minutes and duration of action of 82.1 +/- 5.2 and 95 +/- 5.7 minutes respectively. Both the onset of action and time to peak action were slightly longer (P less than .05) for the high as compared with the low dose IN insulin, although this should not represent a clinically significant difference. The total dextrose requirement was 21.9 +/- 2.3 g for the low dose IN insulin and 34.1 +/- 3.3 g for the high dose IN insulin, the latter value being significantly greater (P less than .01) than the former.(ABSTRACT TRUNCATED AT 250 WORDS)
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Chronic tuboovarian abscess due to Staphylococcus aureus: a case report and literature review. Eur J Obstet Gynecol Reprod Biol 1989; 33:275-9. [PMID: 2599258 DOI: 10.1016/0028-2243(89)90142-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A 40-year-old woman presented with a right adnexal mass. Laparotomy revealed a large tuboovarian abscess due to Staphylococcus aureus. The only significant past medical history was a Cesarean section and bilateral tubal ligation 10 years prior to admission. The tuboovarian abscess, due to this unusual organism, may have developed insidiously over a 10 year period. The patient recovered completely after excision of the abscess and antibiotic treatment.
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28
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Acute febrile neutrophilic dermatosis (Sweet's syndrome). Cutis 1989; 44:157-9. [PMID: 2758865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We describe a patient who displayed the classic features of acute febrile neutrophilic dermatosis (Sweet's syndrome): sudden onset of erythematous plaques, fever, arthritis, and characteristic histologic findings. Unusual findings in her case were the localization of the lesions mainly on the legs, absence of leukocytosis and preceding illness, and marked neutrophilic infiltration in the subcutis. In addition, the fever and eruption subsided on the day the results of pathologic examination were available, making any treatment unnecessary. The short course of the disease in this patient suggests the possibility of postponing steroid treatment for one week in all patients with acute febrile neutrophilic dermatosis.
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29
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Abstract
Heat stroke is a life-threatening syndrome of multi-organ dysfunction caused by elevated body temperature. It may result from failure of the thermoregulatory mechanisms or from inadequate heat dissipation and affects members of several risk groups. A number of authors reported cardiac involvement in heat stroke, but heart failure rarely has been documented. We report the cases of two heat stroke victims, one of whom developed pulmonary edema and the other, peripheral edema. In both, RVG demonstrated dilatation and diffuse hypokinesis of the right ventricle, which persisted for several weeks. We conclude that the heart may be involved in heat stroke and that heart failure is a potential complication of the syndrome that can have a prolonged subclinical course. Fluid replacement in heat stroke should be done under careful observation, which may be facilitated by noninvasive assessment of cardiac function.
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30
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[An outbreak of hepatitis B associated with acupuncture]. HAREFUAH 1989; 116:300-2. [PMID: 2731794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
2 clusters of between 5 and 11 cases of hepatitis B virus infection were associated with acupuncture by a physician late in 1986. The source of the infection is believed to have been an Ethiopian immigrant, a known HBsAg carrier. While he was being operated on a nurse cut her finger on a scalpel blade. During the prodromal period of hepatitis which followed, she was treated by acupuncture. The acupuncture needles were supposedly sterilized by dry heat for 80 minutes at 200 degrees. However, there were apparently breaks in technique which were responsible for the spread of the infection to at least 4 other women, ranging in age from 26 to 80 years. We stress the need for strict enforcement of correct sterilization procedures whenever needles are used to pierce skin. This should be performed only by licensed practitioners of officially recognized occupations, some of which are not as yet covered by our national health regulations.
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Abstract
We describe a 75-year-old patient who presented with severe cholestatic liver disease. He had been receiving methyldopa, 250 mg daily, for 6 years. An extensive evaluation failed to reveal extrahepatic obstruction or serologic evidence of viral hepatitis. A liver biopsy disclosed marked cholestasis, without hepatitis, and was compatible with a rare form of methyldopa-induced liver injury. Cessation of drug treatment was followed by a slow but complete recovery. Cholestasis is a rare manifestation of methyldopa hepatotoxicity. Although methyldopa-associated liver injury usually appears after about 4 weeks of treatment, a history of a much longer exposure does not exclude this entity.
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Abstract
Two clusters of between five and eleven cases of hepatitis B associated with acupuncture treatment by a physician occurred in Jerusalem in late 1986. The origin of the outbreak is believed to have been an Ethiopian immigrant surgical patient, a known HBsAg carrier, who infected an operating room nurse during a surgical procedure. This is the first recorded instance of transmission of HBV from an Ethiopian immigrant to the local Israeli population. We reiterate the need for the enforcement of correct sterilization techniques in all skin-piercing settings, a step which in many countries will require the licensing of a variety of occupations not presently covered by health regulations.
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34
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[Relapsing hepatitis]. HAREFUAH 1988; 114:233-4. [PMID: 3366403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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35
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[Secondary Lyme's disease]. HAREFUAH 1987; 113:13-5. [PMID: 3692348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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36
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Selective resistance to parathyroid hormone in cultured skin fibroblasts from patients with pseudohypoparathyroidism type Ib. J Clin Endocrinol Metab 1986; 62:640-4. [PMID: 3005354 DOI: 10.1210/jcem-62-4-640] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We measured cAMP production in response to agonists in cultured skin fibroblasts from subjects with pseudohypoparathyroidism type Ib (PHP Ib; normal phenotype, resistance to PTH only, normal guanine nucleotide stimulatory coupling protein activity) and skin fibroblasts from normal subjects. There were no significant differences in basal or prostaglandin E1- and forskolin-stimulated cAMP production in PHP Ib vs. normal fibroblasts. Fibroblasts from 7 of 10 subjects with PHP Ib had significantly reduced peak cAMP responses to PTH [3.95 +/- 0.88 vs. 15.9 +/- 4.2 pmol/100 micrograms protein (mean +/- SD); n = 7 for both groups; P less than 0.001]. PTH-stimulated cAMP production was significantly reduced in the 7 subjects with PHP Ib at all concentrations of PTH tested [3-1000 ng/ml human PTH-(1-34)]. In the other 3 subjects with PHP Ib, the cAMP response to PTH was either normal (2 subjects) or above the normal range (1 subject). Thus, skin fibroblasts from many, but not all, subjects with PHP Ib have selective resistance to PTH in terms of cAMP response. Since the defect is hormone specific and persists in culture, we suggest that an intrinsic defect in the PTH receptor may cause PTH resistance in certain subjects with PHP Ib. The cause of PTH resistance in the subjects with a normal cAMP response to PTH is not known, but the data suggest heterogeneity even within the PHP Ib subgroup.
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37
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A longitudinal study of the growth of the New Zealand white rabbit: cumulative and biweekly incremental growth rates for body length, body weight, femoral length, and tibial length. J Orthop Res 1986; 4:221-31. [PMID: 3712130 DOI: 10.1002/jor.1100040211] [Citation(s) in RCA: 136] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This longitudinal study documents cumulative and incremental growth in the New Zealand white rabbit from 2 to 34 weeks of age at biweekly intervals. Body weight, body length, femoral length, and tibial length have been assessed in 17 male and 12 female rabbits, with the data tabulated separately. A specially designed restrainer was used that allowed the sequential clinical measurements and femoral and tibial radiographs to be performed without the use of anesthesia. Skeletal growth was complete at 28 weeks, with the 34-week values thus representing mature adult lengths. The mean body weight at 2 weeks of age was 6% that at 34 weeks, and by 16 weeks, 72% of the weight at 34 weeks was achieved. Weight continued to increase in the adult. The mean body length at 2 weeks was 40% that at 34 weeks, and by 16 weeks, 91% of mature adult length was achieved. The mean femoral length at 2 weeks was 38% of the adult length, and at 16 weeks, it reached 95% of adult length. The mean tibial length at 2 weeks was 38% of the adult length, and 94% of the adult value was achieved by 16 weeks. The longitudinal data document the rate and extent of growth of the New Zealand white rabbit, and allow for more accurate timing and quantitation of physical and systemic interventions on the developing skeleton of the commonly investigated New Zealand white rabbit.
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Tibial epiphyseal development: a cross-sectional histologic and histomorphometric study in the New Zealand white rabbit. J Orthop Res 1986; 4:212-20. [PMID: 3712129 DOI: 10.1002/jor.1100040210] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Sequential histomorphometric studies on the developing rabbit tibia from birth to skeletal maturity demonstrate that growth plate height lessens as longitudinal growth diminishes. Differing rates of development proximally and distally are documented. Distally, growth plate height, width, and area and total epiphyseal area peak or reach near maximum values by 3 weeks, whereas proximally, they do so by 8 weeks (except for height, which also peaks at 3 weeks). The distal growth plate is being obliterated by 16 weeks, at which time the proximal growth plate remains well structured and open. The distal tibia and fibula develop as one tissue mass. The articular cartilage and epiphyseal cartilage are continuous from birth, whereas a single ossification center and a single growth plate are present by 8 weeks. The data point to the presence of intrinsic growth plate, as well as systemic, control mechanisms affecting skeletal growth. Knowledge of temporal and quantitative features of epiphyseal and growth plate development will greatly aid in the elucidation of the underlying controls.
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Receptors and growth-promoting effects of insulin and insulinlike growth factors on cells from bovine retinal capillaries and aorta. J Clin Invest 1985; 75:1028-36. [PMID: 2984251 PMCID: PMC423655 DOI: 10.1172/jci111764] [Citation(s) in RCA: 322] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
It has been suggested that elevated levels of insulin or insulin-like growth factors (IGFs) play a role in the development of diabetic vascular complications. Previously, we have shown a differential response to insulin between vascular cells from retinal capillaries and large arteries with the former being much more insulin responsive. In the present study, we have characterized the receptors and the growth-promoting effect of insulinlike growth factor I (IGF-I) and multiplication-stimulating activity (MSA, an IGF-II) on endothelial cells and pericytes from calf retinal capillaries and on endothelial and smooth muscle cells from calf aorta. We found single and separate populations of high affinity receptors for IGF-I and MSA with respective affinity constants of 1 X 10(-9) M-1 and 10(-8) M-1 in all four cell types studied. Specific binding of IGF-I was between 7.2 and 7.9% per milligram of protein in endothelial cells and 9.1 and 10.4% in the vascular supporting cells. For 125I-MSA, retinal endothelial cells bound only 1.7-2.5%, whereas the aortic endothelial cells and the vascular supporting cells bound between 5.6 and 8.5% per milligram of protein. The specificity of the receptors for IGF-I and MSA differed, as insulin and MSA was able to compete with 125I-IGF-I for binding to the IGF-I receptors with 0.01-0.1, the potency of unlabeled IGF-I, whereas even 1 X 10(-6) M, insulin did not significantly compete with 125I-MSA for binding to the receptors for MSA. For growth-promoting effects, as measured by the incorporation of [3H]thymidine into DNA, confluent retinal endothelial cells responded to IGF-I and MSA by up to threefold increase in the rate of DNA synthesis, whereas confluent aortic endothelial cells did not respond at all. A similar differential of response to insulin between micro- and macrovascular endothelial cells was reported by us previously. In the retinal endothelium, insulin was more potent than IGF-I and IGF-I was more potent that MSA. In the retinal and aortic supporting cells, no differential response to insulin or the IGFs was observed. In the retinal pericytes, IGF-I, which stimulated significant DNA synthesis beginning at 1 X 10(-9) M, and had a maximal effect at 5 X 10(-8) M, was 10-fold more potent than MSA and equally potent to insulin. In the aortic smooth muscle cells, IGF-I was 10-100 times more potent than insulin or MSA. In the retinal and aortic supporting cells, no differential response to insulin or the IGFs was observed. In the retinal pericytes, IGF-I, which stimulated significant DNA synthesis beginning at 1 X 10(-9) M, and had a maximal effect at 5 X 10(-8) M, was 10-fold more potent than MSA and equally potent to insulin. In the aortic smooth muscle cells, IGF-I was 10-100 times more potent than insulin or MSA. In addition, insulin and IGF-I at 1 X 10(-6) and 1 X 10(-8) M, respectively, stimulated these cells to grow by doubling the number of cells as well. In all responsive tissues, the combination of insulin and IGFs were added together, no further increase in effect was seen. These data showed that vascular cells have insulin and IGF receptors, but have a differential response to these hormones. These differences in biological response between cells from retinal capillaries and large arteries could provide clues to understanding the pathogenesis of diabetic micro- and macroangiopathy.
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40
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The relation between oral contraceptive use and subsequent development of hyperprolactinemia. Fertil Steril 1981; 36:464-7. [PMID: 7286268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Serum prolactin levels were determined in 123 patients who presented with menstrual irregularities and/or infertility of more than 1 year's duration. Sixty-three patients had hyperprolactinemia with serum prolactin levels of 26 to 843 ng/ml (normal 5 to 22 ng/ml); 44.4% of this group of patients received oral contraceptive for a period of 2 months to 7 years. Sixty patients were normoprolactinemic, with serum prolactin levels of 3 to 22 ng/ml; 33.4% of this group received oral contraceptives for a period of 6 months to 7 years. The age of presentation, onset of symptoms, age at which they started on oral contraceptives, and duration of use were tabulated. The data were analyzed using chi 2 test corrected for continuity. There was no significant difference in age at the time of evaluation between oral contraceptive users and nonusers with hyperprolactinemia. The relative odds developing hyperprolactinemia were 2.64 times greater among women who has used oral contraceptives for more than 1 year and 6.25 times greater if this use started before the age of 25.
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42
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The lipid composition of the cerebral hemisphere of the miniature pig (Sus scrofa) during development. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. B, COMPARATIVE BIOCHEMISTRY 1971; 39:725-38. [PMID: 4332111 DOI: 10.1016/0305-0491(71)90098-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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43
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Weitere Untersuchungen zur Frage der Blockade des Reticulo-Endothelialen Apparates. ACTA ACUST UNITED AC 1924. [DOI: 10.1007/bf01849882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Untersuchungen zur Pathogenese der Perniziösen Anämie. J Mol Med (Berl) 1923. [DOI: 10.1007/bf01733093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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