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1.
Lymphology ; 51(3): 102-108, 2018.
Article in English | MEDLINE | ID: mdl-30422432

ABSTRACT

The present study aimed to assess LV rotational mechanics by three-dimensional speckle-tracking echocardiography (3DSTE) in lipedema (n=25), lymphedema (n=26) patient groups with age- and gender-matched healthy controls (n=54). 3 lipedema and 4 lymphedema patients were excluded due to insufficient image quality for 3DSTE analysis. LV apical rotation (9.61 ± 4.25 degree vs. 6.40 ± 2.63 degree, p <0.05) and LV twist (13.83 ± 4.89 degree vs. 10.04 ± 3.56 degree, p <0.05) are impaired in lipedema patients as compared to matched controls; similar alterations in lymphedema were not found. Moreover, in some lipedema and lymphedema patients severe LV rotational abnormalities could be detected. Our results suggest that lipedema-associated impaired LV apical rotation and twist assessed by 3DSTE could be a novel differential diagnostic point between lipedema and lymphedema.


Subject(s)
Echocardiography, Three-Dimensional/methods , Heart Ventricles/pathology , Lipedema/pathology , Lymphedema/pathology , Adult , Case-Control Studies , Female , Heart Ventricles/diagnostic imaging , Humans , Lipedema/diagnostic imaging , Lymphedema/diagnostic imaging , Male , Middle Aged , Prognosis , Torsion, Mechanical
2.
Lymphology ; 51(4): 148-159, 2018.
Article in English | MEDLINE | ID: mdl-31119905

ABSTRACT

Compression therapy plays a pivotal role in the treatment of venous leg ulcers and clinical observations include lymph stasis as contributing to the maintenance of chronic wounds. This finding raises the question whether further improvement in lymph circulation with manual lymph drainage (MLD) as a part of complex decongestive physiotherapy (CDP) can improve ulcer healing. We examined whether CDP improves healing of venous leg ulcers and compared the efficacy of CDP with that of multilayered compression with short-stretch bandages. Eight patients (mean age: 64.8 years, mean ulcer area: 23.07 cm2, duration of ulcers: 25.37 months) were treated with a 5-day-course of CDP and 9 patients (mean age: 70.77 years, mean ulcer area: 21.47 cm2, duration of ulcers: 15.8 months) were included in a 10-day-course of CDP. Control goup consisted of 9 patients (mean age: 56.33 years, mean ulcer area: 13.87 cm2, duration of ulcers: 6.11 months) receiving multilayered compression. Wound surface measurement was carried out on days 5 and 10 and ulcer area reduction rate was calculated as area (initial)-area (final)/time unit. There was no statistical difference between the 5-daycourse of CDP and compression of the same duration regarding ulcer healing (t=-1.62, df=15, p= 0.125). A 10-day-course of CDP significantly increased ulcer healing compared to compression of the same duration (t=-2.42, df=16, p= 0.039). Our preliminary results suggest that MLD as a part of CDP supports healing of venous leg ulcers.


Subject(s)
Compression Bandages , Manual Lymphatic Drainage/methods , Varicose Ulcer/therapy , Wound Healing , Adult , Aged , Aged, 80 and over , Case-Control Studies , Female , Follow-Up Studies , Humans , Male , Middle Aged , Pilot Projects , Prognosis , Prospective Studies
3.
Clin Exp Dermatol ; 42(7): 763-766, 2017 Oct.
Article in English | MEDLINE | ID: mdl-28598037

ABSTRACT

Neurofibromatosis type 1 (NF1; OMIM 162200), a dominantly inherited multitumor syndrome, results from mutations in the Neurofibromin 1 (NF1) gene. We present the case of a Hungarian woman with the clinical phenotype of NF1 over her whole body and the clinical features of unilateral overgrowth involving her entire left leg. This unusual phenotype suggested either the atypical form of NF1 or the coexistence of NF1 and overgrowth syndrome. Direct sequencing of the genomic DNA isolated from peripheral blood revealed a novel frameshift mutation (c.5727insT, p.V1909fsX1912) in the NF1 gene. Next-generation sequencing of 50 oncogenes and tumour suppressor genes, performed on the genomic DNAs isolated from tissue samples and peripheral blood, detected only wild-type sequences. Based on these results, we concluded that the patient is affected by an unusual phenotype of NF1, and that the observed unilateral overgrowth of the left leg might be a rare consequence of the identified c.5727insT mutation.


Subject(s)
Frameshift Mutation , Hypertrophy/genetics , Leg/pathology , Neurofibromatosis 1/genetics , Diagnosis, Differential , Female , Humans , Hypertrophy/diagnosis , Middle Aged , Neurofibromatosis 1/diagnosis , Pedigree , Phenotype
4.
Lymphology ; 50(4): 203-209, 2017.
Article in English | MEDLINE | ID: mdl-30248725

ABSTRACT

Lipedema is a disproportional obesity featuring spontaneous or light pressure-induce pain and frequent hematoma formation due to even minor traumatic injuries. It is generally distinguished from general obesity primarily based on clinical hallmarks; however, this becomes difficult when appearing in a concomitant form (combination of obesity and lipedema). Our study group has recently demonstrated that lipedema-associated bruising is correlated with increased capillary fragility (CF) and also that CF could be significantly improved by complex decongestive physiotherapy (CDP). In this study, we measured CF in female subjects with lipedema (15) or non-complicated obesity (15) who were body mass index (BMI) and waist-to-hip ratio (WHR) matched. CF was evaluated with the vacuum suction method (VSM) using Parrot's angiosterrometer in both groups. Application of VSM resulted in a significantly higher number of petechiae in subjects with lipedema. Capillary fragility measurement appears to be a useful differential diagnostic tool between lipedema and obesity under these trial parameters.

5.
Br J Dermatol ; 174(5): 959-60, 2016 05.
Article in English | MEDLINE | ID: mdl-27206360

Subject(s)
Lipedema , Lymphedema , Edema , Humans
7.
Med Hypotheses ; 83(5): 599-606, 2014 Nov.
Article in English | MEDLINE | ID: mdl-25200646

ABSTRACT

Lipedema is a common, but often underdiagnosed masquerading disease of obesity, which almost exclusively affects females. There are many debates regarding the diagnosis as well as the treatment strategies of the disease. The clinical diagnosis is relatively simple, however, knowledge regarding the pathomechanism is less than limited and curative therapy does not exist at all demanding an urgent need for extensive research. According to our hypothesis, lipedema is an estrogen-regulated polygenetic disease, which manifests in parallel with feminine hormonal changes and leads to vasculo- and lymphangiopathy. Inflammation of the peripheral nerves and sympathetic innervation abnormalities of the subcutaneous adipose tissue also involving estrogen may be responsible for neuropathy. Adipocyte hyperproliferation is likely to be a secondary phenomenon maintaining a vicious cycle. Herein, the relevant articles are reviewed from 1913 until now and discussed in context of the most likely mechanisms leading to the disease, which could serve as a starting point for further research.


Subject(s)
Adipocytes/cytology , Estrogens/chemistry , Lipedema/genetics , Lipedema/physiopathology , Adipose Tissue , Cell Proliferation , Female , Genetic Predisposition to Disease , Hormones/chemistry , Humans , Inflammation , Leg/blood supply , Lipids/blood , Male , Models, Cardiovascular , Obesity/complications , Overweight/complications , Peripheral Nervous System , Sympathetic Nervous System
8.
Int Angiol ; 32(6): 541-74, 2013 Dec.
Article in English | MEDLINE | ID: mdl-24212289

ABSTRACT

Primary lymphedema can be managed effectively as a form of chronic lymphedema by a sequenced and targeted treatment and management program based around a combination of Decongestive Lymphatic Therapy (DLT) with compression therapy, when the latter is desired as an adjunct to DLT. Treatment in the maintenance phase should include compression garments, self-management, including self-massage, meticulous personal hygiene and skin care, in addition to lymphtransport-promoting excercises and activities, and, if desired, pneumatic compression therapy applied in the home. When conservative treatment fails, or gives sub-optimal outcomes, the management of primary lymphedema can be improved, where appropriate, with the proper addition of surgical interventions, either reconstructive or ablative. These two surgical therapies can be more effective when fully integrated with manual lymphatic drainage (MLD)-based DLT postoperatively. Compliance with a long-term commitment to MLD/DLT and particularly compression postoperatively is a critical factor in determining the success of any new treatment strategy involving either reconstructive or palliative surgery. The future of management of primary lymphedema has never been brighter with the new prospect of gene-and perhaps stem-cell oriented management.


Subject(s)
Drainage/standards , Lymphedema/diagnosis , Lymphedema/therapy , Chronic Disease , Combined Modality Therapy , Consensus , Drainage/methods , Evidence-Based Medicine/standards , Humans , Lymphedema/physiopathology , Practice Patterns, Physicians'/standards , Predictive Value of Tests , Risk Factors , Treatment Outcome
9.
J Eur Acad Dermatol Venereol ; 27(12): 1579-82, 2013 Dec.
Article in English | MEDLINE | ID: mdl-22817274

ABSTRACT

BACKGROUND: Chronic lymphoedematous limbs have an increased propensity for infections and primary or secondary malignant tumours. It has been attributed to suppressed delayed-type hypersensitivity measured in lymphoedemas related to Stewart-Treves syndrome, Kaposi's sarcoma or breast cancer treatment. Cell-mediated immunity is an effective defence mechanism against bacteria, fungi, viruses and tumour cells. OBJECTIVE: We aimed to examine whether decongestive lymphoedema therapy could improve cell-mediated immunity in breast cancer treatment-related lymphoedema (BCRL). METHODS: Eight women with unilateral BCRL were included in this study. At baseline, tuberculin skin test (TST) was performed on the volar surfaces of the forearms of the affected and non-affected sides using 0.5, 1 and 5 tuberculin units in the form of three consecutive injections with 3-cm spaces in-between, and arm volumes were measured using the Kuhnke's disc model. Decongestive lymphatic therapy was given to swollen arms in 10 consecutive working days. At the end of intensive decongestion, TST on affected side and bilateral volumetry were repeated. RESULTS: Baseline test using undiluted (5 units) and fivefold diluted (1 unit) tuberculin solutions has shown significant differences (P < 0.05) between the mean sizes (11.81 ± 2.32 and 7.75 ± 1.92; 7.12 ± 1.12 and 5.12 ± 0.91 respectively) in favour to healthy arms. Post therapeutically, the mean sizes were significantly increased (P < 0.05) in the dilutions of 1 : 1 and 1 : 5 (7.75 ± 1.92 and 10.56 ± 1.23 mm, 5.12 ± 0.91 and 5.93 ± 1.74 mm respectively). CONCLUSION: Significant increase in TST sizes suggests that decongestive lymphatic therapy is able to partially restore impaired cellular immune function in BCRL.


Subject(s)
Immunity, Cellular , Lymphedema/therapy , Mastectomy/adverse effects , Postoperative Period , Aged , Female , Humans , Lymphedema/etiology , Lymphedema/immunology , Middle Aged , Pilot Projects
10.
Lymphology ; 45(2): 71-9, 2012 Jun.
Article in English | MEDLINE | ID: mdl-23057152

ABSTRACT

Lipedema is a disproportional obesity due to unknown pathomechanism. Its major hallmark is frequent hematoma formation related to increased capillary fragility and reduced venoarterial reflex. Beyond microangiopathy, both venous and lymphatic dysfunction have also been documented. However, arterial circulation in lipedema has not been examined, and therefore we explored aortic elastic properties by echocardiography. Fourteen women with and 14 without lipedema were included in the study. Each subject consented to blood pressure measurement, physical examination, and transthoracic echocardiography. Aortic stiffness index (beta), distensibility, and strain were evaluated from aortic diameter and blood pressure data. Mean systolic (30.0 +/- 3.2 vs. 25.5 +/- 3.6, P < 0.05) and diastolic (27.8 +/- 3.3 vs. 22.3 +/- 3.1) aortic diameters (in mm) and aortic stiffness index (9.05 +/- 7.45 vs. 3.76 +/- 1.22, P < 0.05) were significantly higher, while aortic strain (0.082 +/- 0.04 vs. 0.143 +/- 0.038, P < 0.05) and distensibility (2.24 +/- 1.07 vs. 4.38 +/- 1.61, P < 0.05) were significantly lower in lipedematous patients compared to controls. Thus, lipedema is characterized with increased aortic stiffness.


Subject(s)
Adipose Tissue/physiopathology , Aorta/physiopathology , Connective Tissue Diseases/physiopathology , Edema/physiopathology , Vascular Stiffness/physiology , Adult , Blood Pressure/physiology , Case-Control Studies , Echocardiography , Elasticity , Female , Humans
11.
Int Angiol ; 31(4): 316-29, 2012 Aug.
Article in English | MEDLINE | ID: mdl-22801397

ABSTRACT

Chronic edema is a multifactorial condition affecting patients with various diseases. Although the pathophysiology of edema varies, compression therapy is a basic tenant of treatment, vital to reducing swelling. Clinical trials are disparate or lacking regarding specific protocols and application recommendations for compression materials and methodology to enable optimal efficacy. Compression therapy is a basic treatment modality for chronic leg edema; however, the evidence base for the optimal application, duration and intensity of compression therapy is lacking. The aim of this document was to present the proceedings of a day-long international expert consensus group meeting that examined the current state of the science for the use of compression therapy in chronic edema. An expert consensus group met in Brighton, UK, in March 2010 to examine the current state of the science for compression therapy in chronic edema of the lower extremities. Panel discussions and open space discussions examined the current literature, clinical practice patterns, common materials and emerging technologies for the management of chronic edema. This document outlines a proposed clinical research agenda focusing on compression therapy in chronic edema. Future trials comparing different compression devices, materials, pressures and parameters for application are needed to enhance the evidence base for optimal chronic oedema management. Important outcomes measures and methods of pressure and oedema quantification are outlined. Future trials are encouraged to optimize compression therapy in chronic edema of the lower extremities.


Subject(s)
Clinical Trials as Topic/standards , Edema/therapy , Intermittent Pneumatic Compression Devices/standards , Lower Extremity/blood supply , Research Design/standards , Stockings, Compression/standards , Chronic Disease , Clinical Trials as Topic/methods , Consensus , Cooperative Behavior , Edema/diagnosis , Edema/etiology , Edema/physiopathology , Evidence-Based Medicine/standards , Humans , International Cooperation , Treatment Outcome
12.
Clin Obes ; 2(3-4): 86-95, 2012 Jun.
Article in English | MEDLINE | ID: mdl-25586162

ABSTRACT

Lipedema is a disproportionate, symmetrical fatty swelling characterized by pain and bruising existing almost exclusively among women. We undertook a systematic review of the available literature about lipedema, given the lack of knowledge and little evidence about this disorder especially among obesity experts. Diagnosis of lipedema is usually based on clinical features. Symmetrical edema in the lower limbs with fatty deposits located to hips and thighs usually appears at puberty and often affects several members of the same family. Main disorders considered for differential diagnosis are lymphedema, obesity, lipohypertrophy and phlebedema. Treatment protocols comprise conservative (decongestive lymphatic therapy) and surgical (liposuction) approaches. Early diagnosis and treatment are mandatory for this disorder otherwise gradual enlargement of fatty deposition causes impaired mobility and further comorbidities like arthrosis and lymphatic insufficiency.

13.
Lymphology ; 44(4): 178-82, 2011 Dec.
Article in English | MEDLINE | ID: mdl-22458119

ABSTRACT

Lipedema is a disproportional obesity featuring light pressure-induced or spontaneous pain. On the basis of our clinical observations, lymphedema therapy, as practiced in our clinic, reduces the perception of pain beyond leg volume reduction. We therefore aimed to measure pain intensity prior and subsequent to treatment. 38 women with lipedema were enrolled in the study with 19 patients undergoing treatment and 19 serving as the control group using exclusively moisturizers. Treatment consisted of once daily manual lymph drainage (MLD), intermittent pneumatic compression (IPC), and multilayered short-stretch bandaging performed throughout a 5-day-course. Pain was evaluated with a 10-item questionnaire, a pain rating scale (PRS), and the Wong-Baker Faces scale. Treatment resulted in a significant reduction of pain with a decrease in mean scores of all three measures. In the control group, only PRS showed significant decrease. Our study results indicate that this treatment regimen not only reduces leg volume and capillary fragility, but also improves pain intensity in patients with lipedema.


Subject(s)
Edema/physiopathology , Lymphedema/therapy , Obesity/physiopathology , Pain/prevention & control , Adult , Aged , Aged, 80 and over , Female , Humans , Leg , Lymphedema/complications , Middle Aged , Pain/etiology , Pain Measurement , Subcutaneous Fat/pathology
14.
Int Angiol ; 29(5): 442-53, 2010 Oct.
Article in English | MEDLINE | ID: mdl-20924349

ABSTRACT

AIM: A mainstay of lymphedema management involves the use of compression therapy. Compression therapy application is variable at different levels of disease severity. Evidence is scant to direct clinicians in best practice regarding compression therapy use. Further, compression clinical trials are fragmented and poorly extrapolable to the greater population. An ideal construct for conducting clinical trials in regards to compression therapy will promote parallel global initiatives based on a standard research agenda. The purpose of this article is to review current evidence in practice regarding compression therapy for BCRL management and based on this evidence, offer an expert consensus recommendation for a research agenda and prescriptive trials. Recommendations herein focus solely on compression interventions. METHODS: This document represents the proceedings of a session organized by the International Compression Club (ICC) in June 2009 in Ponzano (Veneto, Italy). The purpose of the meeting was to enable a group of experts to discuss the existing evidence for compression treatment in breast cancer related lymphedema (BCRL) concentrating on areas where randomized controlled trials (RCTs) are lacking. RESULTS: The current body of research suggests efficacy of compression interventions in the treatment and management of lymphedema. However, studies to date have failed to adequately address various forms of compression therapy and their optimal application in BCRL. We offer recommendations for standardized compression research trials for prophylaxis of arm lymphedema and for the management of chronic BCRL. Suggestions are also made regarding; inclusion and exclusion criteria, measurement methodology and additional variables of interest for researchers to capture. CONCLUSION: This document should inform future research trials in compression therapy and serve as a guide to clinical researchers, industry researchers and lymphologists regarding the strengths, weaknesses and shortcomings of the current literature. By providing this construct for research trials, the authors aim to support evidence-based therapy interventions, promote a cohesive, standardized and informative body of literature to enhance clinical outcomes, improve the quality of future research trials, inform industry innovation and guide policy related to BCRL.


Subject(s)
Breast Neoplasms/therapy , Compression Bandages , Intermittent Pneumatic Compression Devices , Lymphedema/therapy , Randomized Controlled Trials as Topic/methods , Research Design , Breast Neoplasms/complications , Evidence-Based Medicine , Female , Humans , Lymphedema/etiology , Lymphedema/physiopathology , Pressure , Treatment Outcome
16.
Lymphology ; 42(4): 188-94, 2009 Dec.
Article in English | MEDLINE | ID: mdl-20218087

ABSTRACT

The application of intermittent pneumatic compression (IPC) as a part of complex decongestive physiotherapy (CDP) remains controversial. The aim of this study was to investigate whether the combination of IPC with manual lymph drainage (MLD) could improve CDP treatment outcomes in women with secondary lymphedema after breast cancer treatment. A randomized study was undertaken with 13 subjects receiving MLD (60 min) and 14 receiving MLD (30 min) plus IPC (30 min) followed by standardized components of CDP including multilayered compression bandaging, physical exercise, and skin care 10 times in a 2-week-period. Efficacy of treatment was evaluated by limb volume reduction and a subjective symptom questionnaire at end of the treatment, and one and two months after beginning treatment. The two groups had similar demographic and clinical characteristics. Mean reductions in limb volumes for each group at the end of therapy, and at one and two months were 7.93% and 3.06%, 9.02% and 2.9%, and 9.62% and 3.6%, respectively (p < 0.05 from baseline for each group and also between groups at each measurement). Although a significant decrease in the subjective symptom survey was found for both groups compared to baseline, no significant difference between the groups was found at any time point. The application of IPC with MLD provides a synergistic enhancement of the effect of CDP in arm volume reduction.


Subject(s)
Breast Neoplasms/complications , Exercise Therapy , Intermittent Claudication/therapy , Intermittent Pneumatic Compression Devices , Lymphedema/therapy , Antineoplastic Agents/adverse effects , Arm/surgery , Breast Neoplasms/therapy , Drainage , Female , Humans , Leg/surgery , Lymphedema/etiology , Middle Aged , Postoperative Complications/prevention & control , Prognosis , Radiotherapy, Adjuvant/adverse effects , Treatment Outcome
17.
Lymphology ; 41(1): 40-4, 2008 Mar.
Article in English | MEDLINE | ID: mdl-18581957

ABSTRACT

Lipedema is a disproportional obesity for which evidence-based treatment is not currently available. We studied whether complete decongestive physiotherapy (CDP) alone or combined with intermittent pneumatic compression (IPC) could improve the treatment outcome in women with lipedema using a prospective, randomized trial. Eleven patients received CDP (60 min) and thirteen CDP (30 min) plus IPC (30 min) once daily in a 5-day-course. Subsequent to drainage, all subjects received multilayered compression bandaging, physical exercise and skin care. Treatment efficacy was evaluated by limb volume reduction. Both groups achieved significant reductions in mean lower extremity volume (p < 0.05). The addition of IPC is safe, although it provides no synergistic benefit to CDP in leg volume reduction under these study conditions.


Subject(s)
Lymphedema/therapy , Physical Therapy Modalities , Adult , Aged , Aged, 80 and over , Female , Humans , Lymphedema/pathology , Massage/methods , Middle Aged , Pilot Projects , Prospective Studies , Skin Care/methods , Treatment Outcome
18.
Lymphology ; 41(4): 161-6, 2008 Dec.
Article in English | MEDLINE | ID: mdl-19306662

ABSTRACT

Lipedema is a disproportional obesity featuring frequent hematoma formation due to even minor traumatic injuries. On the basis of clinical observations, complete decongestive physiotherapy diminishes the incidence of hematomas due to minor injuries beyond leg volume reduction. Hematoma development may be caused by altered capillary resistance (CR) or altered capillary fragility (CF). We measured capillary fragility (CF) before and after complex decongestive physiotherapy (CDP) to examine, whether CDP could reduce CF. 38 women with lipedema were included in the study. Twenty-one (21) patients were treated with CDP and 17 using exclusively moisturizers as the control group. CDP comprised once daily manual lymph drainage, intermittent pneumatic compression and multilayered short-stretch bandaging performed throughout a 5-day-course. CF was evaluated with the vacuum suction method (VSM) using Parrot's angiosterrometer in both groups. Decongestive therapy resulted in a significant reduction of the number of petechiae while no change was detected within the control group. Complete decongestive physiotherapy significantly reduced CF in patients with lipedema and this reduction may lead to reduced hematoma formation.


Subject(s)
Adipose Tissue , Capillary Fragility/physiology , Edema/therapy , Physical Therapy Modalities , Adipose Tissue/pathology , Adult , Aged , Edema/physiopathology , Female , Humans , Massage , Middle Aged
19.
Lymphology ; 40(3): 138-42, 2007 Sep.
Article in English | MEDLINE | ID: mdl-18062616

ABSTRACT

The removal of wisdom teeth is often associated with severe postoperative edema and pain, and operation on the third molar can cause local inflammation that impairs lymph transport. The objective of the study was to assess the efficacy of manual lymph drainage (MLD) in reducing swelling following bilateral wisdom tooth removal. Ten consecutive patients with bilateral impacted wisdom teeth that required surgical removal were enrolled in the study. Each patient was postoperatively treated with MLD (after Vodder's method) on one side of the neck region with the untreated contralateral side as a control. Swelling was evaluated using a tape-measure placed in contact with the skin. The six landmarks of measurement included tragus-lip junction, tragus-pogonion, mandibular angle-external corner of eye, mandibular angle-ala nasi, mandibular angle-lip junction, and mandibular angle-median point of chin. Subjective assessment of MLD was conducted with self-evaluation using a visual analogue bar scale (VAS, range 0-100 mm). Of the 6 linear measurements, 4 lines (2, 4, 5, 6) showed a significant reduction of swelling on the side of MLD compared to the untreated side. Mean score of VAS of pretreatment condition was 35.5 +/- 20.60 mm that decreased to 22 +/- 19.32 mm measured after MLD (p=0.0295). This initial study demonstrates that MLD may promote an improvement of lymph circulation and work in an adjunctive role for reduction of postoperative swelling and pain following removal of impacted third molars.


Subject(s)
Drainage/methods , Edema/prevention & control , Lymph , Molar, Third/surgery , Pain, Postoperative/prevention & control , Adolescent , Adult , Edema/etiology , Face , Female , Humans , Male , Pain, Postoperative/etiology , Postoperative Care/methods , Postoperative Period , Tooth Extraction/adverse effects , Tooth, Impacted/surgery , Treatment Outcome
20.
J Invest Dermatol ; 117(2): 205-13, 2001 Aug.
Article in English | MEDLINE | ID: mdl-11511295

ABSTRACT

Human keratinocytes are known to kill Candida albicans in vitro, but the mechanism of killing is not yet understood. Here, we demonstrate that spontaneous, ultraviolet-B-light-induced, alpha-melanocyte-stimulating-hormone-induced, and interleukin-8-induced Candida killing by keratinocytes can be inhibited with mannan and mannosylated bovine serum albumin (Man-BSA). A polyclonal goat serum raised against the human macrophage mannose receptor stained suprabasal keratinocytes, but no staining was observed on keratinocytes with a monoclonal antibody (mAb15) specific for the human macrophage mannose receptor. Mannose-affinity chromatography of keratinocyte extract isolated a 200 kDa protein, and on the Western blot the goat antiserum reacted with a 200 kDa protein. In radioligand binding studies, the binding of 125I-Man-BSA to human keratinocytes was inhibited by mannan in a concentration-dependent manner. Analysis of the binding revealed a single class keratinocyte mannose receptor with a KD of 1.4 x 10(-8) M and a Bmax of 1 x 10(4) binding sites per cell. The binding of 125I-Man- BSA to keratinocytes proved to be time-dependent, acid-precipitable, and Ca2+- and trypsin-sensitive. After trypsinization the receptors underwent a rapid recovery at 37 degrees C. These results demonstrate the presence of mannose receptor on human keratinocytes, and its active involvement in the killing of Candida albicans.


Subject(s)
Candida albicans/immunology , Candidiasis/immunology , Keratinocytes/metabolism , Keratinocytes/microbiology , Lectins, C-Type , Mannose-Binding Lectins , Receptors, Cell Surface/biosynthesis , Antibodies, Monoclonal , Blotting, Western , Calcium/metabolism , Candidiasis/metabolism , Cell Adhesion , Chelating Agents/pharmacology , Cross Reactions , Egtazic Acid/pharmacology , Flow Cytometry , Humans , Immunohistochemistry , In Vitro Techniques , Iodine Radioisotopes , Keratinocytes/cytology , Leukocytes/immunology , Leukocytes/metabolism , Leukocytes/microbiology , Mannans/pharmacology , Mannose/pharmacokinetics , Mannose Receptor , Radioligand Assay , Receptors, Cell Surface/analysis , Receptors, Cell Surface/immunology , Serum Albumin/pharmacokinetics , Skin/cytology , Skin/microbiology
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