[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100533150":3},{"organization":4,"outcomesModule":7,"designInfo":45,"detailedDescription":48,"studyPopulation":49,"armGroups":50,"interventions":44,"overallOfficials":60,"centralContacts":66,"locations":73,"responsibleParty":92,"collaborators":94,"id":97,"slug":44,"hasResults":98,"nctId":99,"briefTitle":100,"officialTitle":101,"acronym":44,"eligibilityCriteria":102,"healthyVolunteers":103,"sex":104,"minAge":105,"maxAge":106,"enrollmentInfo":107,"targetDuration":44,"studyType":110,"phases":44,"briefSummary":111,"conditions":112,"keywords":114,"overallStatus":75,"whyStopped":44,"lastUpdateSubmitDate":121,"lastUpdatePostDateStruct":122,"startDateStruct":125,"completionDateStruct":127,"leadSponsor":129,"locationsCount":130},{"fullName":5,"class":6},"Liverpool John Moores University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":44,"otherOutcomes":44},[9,13,16,19,22,25,28,31,34,37,41],{"measure":10,"description":11,"timeFrame":12},"Skin function\u002Fresponsiveness","The non-dominant forearm will be inserted with 3 cutaneous microdialysis membranes. Each of the membranes will be perfused with either of the following (randomly assigned to the three sites); increasing doses of Acetylcholine, Sodium Nitroprusside (SNP) or calcitonin gene-related peptide (CGRP) to stimulate skin blood flow (and sweating) which will be assessed using laser Doppler probes housed directly over the membrane sites. The dose-response curves for skin blood flow will be mathematically modelled via non-linear regression curve fitting. The maximum responses and the effective concentration causing 50% of the maximal response (EC50) will be calculated from the nonlinear regression modelling.","Baseline (visit 1)",{"measure":14,"description":15,"timeFrame":12},"Sweat gland function\u002Fresponsiveness","The non-dominant forearm will be inserted with 3 cutaneous microdialysis membranes. Each of the membranes will be perfused with either of the following (randomly assigned to the three sites); increasing doses of Acetylcholine, Sodium Nitroprusside (SNP) or calcitonin gene-related peptide (CGRP) to stimulate sweating (and skin blood flow) which will be assessed using laser Doppler probes housed directly over the membrane sites. The dose-response curves for sweating will be mathematically modelled via non-linear regression curve fitting. The maximum responses and the effective concentration causing 50% of the maximal response (EC50) will be calculated from the nonlinear regression modelling.",{"measure":17,"description":18,"timeFrame":12},"Oestradiol","A venous blood sample will be taken and analysed to establish the oestradiol level (pg\u002FmL).",{"measure":20,"description":21,"timeFrame":12},"Interleukin-6 (IL-6)","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nInterleukin-6 (IL-6) will be measured (pg\u002FmL) using an ELISA.",{"measure":23,"description":24,"timeFrame":12},"Interleukin-8 (IL-8)","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nInterleukin-8 (IL-8) will be measured (pg\u002FmL) using an ELISA.",{"measure":26,"description":27,"timeFrame":12},"Tumour Necrosis Factor alpha (TNF-α)","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nTNF-α will be measured (pg\u002FmL) using an ELISA.",{"measure":29,"description":30,"timeFrame":12},"Prostaglandin E2","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nProstaglandin E2 will be measured (pg\u002FmL) using an ELISA.",{"measure":32,"description":33,"timeFrame":12},"C-reactive Protein (CRP)","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nCRP will be measured (mg\u002FL) using an ELISA.",{"measure":35,"description":36,"timeFrame":12},"Calcitonin Gene Related Peptide (CGRP)","A venous blood sample will be taken to assess circulating inflammatory markers\u002Fcytokines.\n\nCGRP will be measured (pg\u002FmL) using an ELISA.",{"measure":38,"description":39,"timeFrame":40},"Skin structure (blood vessels)","7 days following assessment of skin function\u002Fresponsiveness (to allow the hyperaemic response to subside), a single 3mm skin punch biopsy will be taken from the non-dominant forearm. The sample will be processed and stained to highlight blood vessels and endothelia. The samples will be stained with fluorescein-labelled ulex europaeus, an endothelium-specific antibody. Confocal microscopic imaging of the samples will be analysed to quantify capillary density e.g. capillary count\u002Flength of the epidermal surface (capillaries\u002Fmm) and capillary diameter.","Baseline (visit 2)",{"measure":42,"description":43,"timeFrame":40},"Skin structure (sweat glands)","7 days following assessment of skin function\u002Fresponsiveness (to allow the hyperaemic response to subside), a single 3mm skin punch biopsy will be taken from the non-dominant forearm. The sample will be processed and stained to highlight sweat glands. The samples will be stained with protein gene product 9.5, a sweat gland\u002Fnerve fibre antibody. Confocal microscopic imaging of the samples will be analysed to quantify sweat gland density.",null,{"allocation":44,"interventionModel":44,"interventionModelDescription":44,"primaryPurpose":44,"observationalModel":46,"timePerspective":47,"maskingInfo":44},"CASE_CONTROL","CROSS_SECTIONAL","In a cross-sectional design, participants will attend the laboratory on two separate occasions. At visit 1, anthropometric measurements will be recorded and a venous blood sample will be collected to determine hormone status (e.g. oestradiol level) and pro-inflammatory markers (e.g. IL-8, Prostaglandin 2E). Participants will then undergo assessment of post-ganglionic skin blood vessel and sweat gland responsiveness (transdermal\u002Fcutaneous microdialysis). At visit 2 (\\~7 days later), participants will undergo a skin punch biopsy.","24 postmenopausal women (12 who experience hot flushes and 12 who do not) and 12 premenopausal women will be recruited for this study.\n\nPostmenopausal participants (aged \\>45 years) will be required to be amenorrhoeic for at least six months and symptomatic women should be experiencing at least four hot flushes per day. Premenopausal women will be eumenorrhoeic and will be aged 18-30 yrs. Participants will be healthy and free from cardiovascular and metabolic risk factors or diseases, and not taking any treatments to alleviate hot flushes. Participants will be required to complete a health screening questionnaire to confirm they are eligible to participate in the study.",[51,54,57],{"label":52,"type":44,"description":53,"interventionNames":44},"Postmenopausal + Hot Flush (P+HF)","Postmenopausal women who regularly experience hot flushes.",{"label":55,"type":44,"description":56,"interventionNames":44},"Postmenopausal + Hot Flush (P-HF)","Postmenopausal women who do not experience hot flushes.",{"label":58,"type":44,"description":59,"interventionNames":44},"Premenopausal","Premenopausal women who experience regular menstruation.",[61,64],{"name":62,"affiliation":5,"role":63},"Kirsty A. Roberts, PhD","PRINCIPAL_INVESTIGATOR",{"name":65,"affiliation":5,"role":63},"David A Low, PhD",[67,71],{"name":62,"role":68,"phone":69,"phoneExt":44,"email":70},"CONTACT","0151 904 6244","k.a.roberts@ljmu.ac.uk",{"name":65,"role":68,"phone":69,"phoneExt":44,"email":72},"d.a.low@ljmu.ac.uk",[74],{"facility":5,"status":75,"city":76,"state":77,"zip":78,"country":79,"countryCode":80,"cosmosGeoPoint":81,"geoPoint":86,"contacts":87},"RECRUITING","Liverpool","Merseyside","L3 3AF","United Kingdom","UK",{"type":82,"coordinates":83},"Point",[84,85],-2.97794,53.41058,{"lat":85,"lon":84},[88,90],{"name":62,"role":68,"phone":89,"phoneExt":44,"email":70},"07780876255",{"name":65,"role":68,"phone":91,"phoneExt":44,"email":72},"01519046244",{"type":93,"investigatorFullName":44,"investigatorTitle":44,"investigatorAffiliation":44,"oldNameTitle":44,"oldOrganization":44},"SPONSOR",[95],{"name":96,"class":6},"British Heart Foundation","100533150",false,"NCT06222073","Getting Under the Skin of the Menopausal Hot Flush","The Menopausal Hot Flush: Cutaneous Vascular and Sudomotor Function and Structure in Symptomatic Women","Inclusion Criteria:\n\n* Aged \\>45 years for the postmenopausal cohort and aged 18-30 years for the premenopausal cohort\n* Female\n* Amenorrhoeic for \\>6 months (postmenopausal criteria)\n* \\>4 hot flushes per day (symptomatic postmenopausal criteria)\n* Eumenorrhoeic with regular menstrual cycles (premenopausal criteria)\n* Healthy\n* Non-smoker\n* BMI 18-30 kg\u002Fm2\n* No history of cardiovascular or respiratory disease\n* No history of metabolic disease e.g. type II diabetes\n* Drink \\\u003C14 units of alcohol per week\n* Not taking any medication or treatments to alleviate hot flushes\n\nExclusion Criteria:\n\n* Aged \\\u003C 18 years or 31-44 years\n* Male\n* Smokers\n* Medical history of cardiovascular\u002Frespiratory disease\n* Medical history of metabolic disease e.g. type II diabetes\n* Drink \\>15 units of alcohol per week\n* On medication or treatments to alleviate hot flushes or have taken such medication\u002Ftreatment within the previous 6 months\n* BMI of \\\u003C18 or \\>30 kg\u002Fm2\n* Vaccination (\\\u003C1 week) due to induced systemic inflammatory reaction\n* Local forearm infection\n* Allergy to local anaesthetic\u002FMarcain\u002Famide-group anaesthetics\n* Pregnant",true,"FEMALE","18 Years","60 Years",{"count":108,"type":109},36,"ESTIMATED","OBSERVATIONAL","The aim of this research is to 1) test how the skin blood vessels and sweat glands function in women who experience hot flushes by using skin microdialysis to deliver small amounts of substances to the skin that cause increased skin blood flow and sweating, and 2) examine the structure of the skin blood vessels and sweat glands in the skin of women who experience hot flushes by taking a very small skin biopsy. Any changes in the function or structure of the skin blood vessels or sweat glands in women with hot flushes would increase our understanding of what causes hot flushes and help to design effective treatments.",[113],"Menopause",[115,116,117,118,119,120],"hot flush","skin","blood flow","sweating","structure","function","2025-03-13",{"date":123,"type":124},"2025-03-18","ACTUAL",{"date":126,"type":124},"2023-01-01",{"date":128,"type":109},"2025-12-31",{"name":5,"class":6},1]