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1.
Burns ; 50(6): 1562-1577, 2024 08.
Artículo en Inglés | MEDLINE | ID: mdl-38570249

RESUMEN

The cellular mechanisms of burn conversion of heat damaged tissue are center of many studies. Even if the molecular mechanisms of heat-induced cell death are controversially discussed in the current literature, it is widely accepted that caspase-mediated apoptosis plays a central role. In the current study we wanted to develop further information on the nature of the mechanism of heat-induced cell death of fibroblasts in vitro. We found that heating of human fibroblast cultures (a 10 s rise from 37 °C to 67 °C followed by a 13 s cool down to 37 °C) resulted in the death of about 50% of the cells. However, the increase in cell death started with a delay, about one hour after exposure to heat, and reached the maximum after about five hours. The lack of clear evidence for an active involvement of effector caspase in the observed cell death mechanism and the lack of observation of the occurrence of hypodiploid nuclei contradict heat-induced cell death by caspase-mediated apoptosis. Moreover, a dominant heat-induced increase in PARP1 protein expression, which correlated with a time-delayed ATP synthesis inhibition, appearance of double-strand breaks and secondary necrosis, indicate a different type of cell death than apoptosis. Indeed, increased translocation of Apoptosis Inducing Factor (AIF) and Macrophage Migration Inhibitory Factor (MIF) into cell nuclei, which correlates with the mentioned enhanced PARP1 protein expression, indicate PARP1-induced, AIF-mediated and MIF-activated cell death. With regard to the molecular actors involved, the cellular processes and temporal sequences, the mode of cell death observed in our model is very similar to the cell death mechanism via Parthanatos described in the literature.


Asunto(s)
Apoptosis , Quemaduras , Fibroblastos , Calor , Poli(ADP-Ribosa) Polimerasa-1 , Humanos , Fibroblastos/patología , Fibroblastos/metabolismo , Quemaduras/patología , Calor/efectos adversos , Poli(ADP-Ribosa) Polimerasa-1/metabolismo , Parthanatos , Necrosis , Células Cultivadas , Muerte Celular , Piel/patología , Piel/citología , Piel/lesiones , Poli(ADP-Ribosa) Polimerasas/metabolismo , Factor Inductor de la Apoptosis/metabolismo , Caspasas/metabolismo , Roturas del ADN de Doble Cadena , Adenosina Trifosfato/metabolismo
2.
Cancers (Basel) ; 15(23)2023 Nov 30.
Artículo en Inglés | MEDLINE | ID: mdl-38067381

RESUMEN

BACKGROUND: Chronic cancer-related fatigue is difficult to manage in breast cancer survivors. The tango trial showed that a six-week tango Argentino program was effective in reducing fatigue and improving quality of life, and here we investigated the sustainability of this tango program for breast cancer survivors. METHODS: Stage I-III breast cancer survivors with increased fatigue symptoms were analyzed. The fifty participants in the tango trial were compared with a control cohort (n = 108) who did not participate in the tango program. Using the European Organization for Research and Treatment of Cancer Questionnaire C30 (EORTC-QLQ-C30) and the German version of the cancer fatigue scale (CFS-D) self-reported quality of life parameters were assessed and longitudinal changes, correlations, and association factors were calculated. RESULTS: Significant improvements in fatigue (p = 0.006), physical functioning (p = 0.01), and diarrhea (p = 0.04) persisted in the 50 Tango participants at 6 months, but not in the control cohort. Twelve months after joining the tango program, increased fatigue was associated with reduced sporting activities (p = 0.0005), but this was not the case for tango dancing. CONCLUSIONS: The present results suggest that tango may be appropriate as a component of early supportive and follow-up care programs, to promote health-related quality of life and physical activity and also eventually to improve long-term clinical outcomes of breast cancer survivors. TRIAL REGISTRATION: Trial registration numbers DRKS00013335 on 27 November 2017 and DRKS00021601 on 21 August 2020 retrospectively registered.

3.
Cancers (Basel) ; 15(24)2023 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-38136309

RESUMEN

BACKGROUND: Baseline quality of life (bQL) has been shown to be a predictor of the clinical outcome of oncological patients. The primary objective of the present study was to examine the role of bQL as a treatment predictor in oncological patients. METHODS: In this prospective study, all-stage cancer patients registered in the Network Oncology registry were enrolled, and their bQL at diagnosis was evaluated. RESULTS: Five hundred and thirty-eight oncological patients were eligible (median age 64 years). We show that survival-predicting bQL variables such as pain, low physical functioning or financial burden at tumor diagnosis were linked to lower systemic treatment (p = 0.03), reduced surgery (p = 0.007) or reduced oncological treatment compliance (0.01), respectively. Lastly, female gender and older cancer patients exhibited a tempered bQL. CONCLUSION: Our study is one of the first to reveal that bQL at tumor diagnosis is significantly associated with the prediction of oncological treatment with distinctive age- and gender-related patterns. Our results emphasize the need to address the physical, psychosocial, and financial burden of cancer patients prior to their oncological treatment with respect to age and gender. The associations found here pave the way for early integration of patient-reported outcomes into oncological supportive concepts.

4.
Medicina (Kaunas) ; 59(10)2023 Oct 21.
Artículo en Inglés | MEDLINE | ID: mdl-37893592

RESUMEN

Background and Objectives: Good scar management in burn care is essential. Nevertheless, there are no consistent recommendations regarding moisturizers for scar management. Our aim was to investigate and compare the effects of commonly used products on normal skin and burn scars. Materials and Methods: A total of 30 skin-healthy (control group) and 12 patients with burn scars were included in this study. For an intraindividual comparison, each participant received creams consisting of dexpanthenol (P), aloe vera (A), and a natural plant oil (O) with instructions to apply them daily to a previously defined area for at least 28 days. Objective scar evaluation was performed with Visioscan®; Tewameter®; Cutometer®, and the Oxygen To See® device. Subjective evaluation was performed with an "application" questionnaire, the Patient and Observer Scar Assessment Scale (POSAS), and with the "best of three" questionnaire. Results: After (A) a high trend of amelioration of +30%, TEWL was detected on the scar area. Blood flow increased slightly on healthy skin areas after (A) application to +104%. The application of (A) on healthy skin demonstrated a positive effect on the parameters of scaliness (+22%, p < 0.001), softness (+14%, p = 0.046), roughness R1 (+16%, p < 0.001) and R2 (+17%, p = 0.000), volume (+22%, p < 0.001), and surface area (+7%, p < 0.001) within the control group. After (P), a significant improvement of the baseline firmness parameter of +14.7% was detected (p = 0.007). (P) also showed a beneficial effect on the parameters of R1 (+7%, p = 0.003), R2 (+6%, p = 0.001), and volume (+17%, p = 0.001). (O) lead to a statistically significant improvement of volume (+15%, p = 0.009). Overall, most study participants stated (A) to be the "best of three". Conclusions: (A) performed statistically best, and is a well-tolerated moisturizing product. However, further quantitative studies are needed to provide statistically significant clarification for uniform recommendations for scar therapy.


Asunto(s)
Aloe , Quemaduras , Humanos , Cicatriz/tratamiento farmacológico , Cicatriz/etiología , Piel/patología
5.
Breast Cancer ; 30(6): 1008-1017, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37587322

RESUMEN

BACKGROUND: Due to advances in the fight against breast cancer, aesthetic aspects and the prevention of breast deformities are playing an important role in surgical procedures. Currently the main form of breast cancer surgery is breast-conserving surgery (BCS), and even if mastectomy (MAS) is required, oncoplastic surgery and reconstruction options can improve outcomes, including health-related quality of life (QoL) of cancer patients. The purpose of this study was to assess whether surgery options induce different outcomes in self-reported QoL in guide-line treated breast cancer patients of the Network Oncology (NO). METHODS: This prospective Real-World-Data (RWD) study was conducted using data from the NO-clinical registry. QoL was assessed by evaluation of the European Organization of Research and Treatment Health-Related Quality of Life Core Questionnaire scale (EORTC QLQ-C30). Association factors between type of surgery options, without or with immediate breast reconstructions the EORTC QLQ-C30-scales at baseline after surgery, 6, 12, and 24 months later were analyzed with adjusted multivariate regression analysis, considering age, cancer stage, and treatment regimens, using software R. RESULTS: A total of 623 primary breast cancer patients (all tumor stages, median age 58 (ICR: 50-68) diagnosed and guide-line treated between 2013 and 2021), 524 BCS and 99 MAS, 24 of whom received immediate breast reconstruction (MBR), were eligible for analyses. Compared with BCS patients, MBR patients self-reported considerably lower global health, physical and social functioning, and higher burden of pain and financial difficulties at baseline. In later follow-up surveys, functional scales increased and symptoms decreased in all patients, and the differences between MAS and BCS equalized. Longitudinal analyses after 24 months were obtained from 258 patients and revealed that compared to 224 BCS, the 34 MAS patients reported increased social functioning (p = 0.04). CONCLUSIONS: At 24 months after MAS, breast cancer patients' QoL improved compared with BCS, although impairments in QoL were reported immediately after MAS. A growing expertise in surgical procedures as well as supportive care is critical to optimizing patients' well-being. These findings may be considered when counseling breast cancer patients pre- and post-surgery. TRIAL REGISTRATION NUMBER: DRKS00013335 on 27/11/2017 retrospectively registered.


Asunto(s)
Neoplasias de la Mama , Mastectomía , Humanos , Persona de Mediana Edad , Femenino , Mastectomía/métodos , Neoplasias de la Mama/cirugía , Neoplasias de la Mama/patología , Mastectomía Segmentaria/métodos , Calidad de Vida , Estudios Prospectivos
6.
J Clin Med ; 12(16)2023 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-37629315

RESUMEN

BACKGROUND: The face is commonly affected in thermal injuries, with a demand for proper recognition and the correct choice of treatment to guarantee optimal aesthetic and functional outcomes. It is highly vascularized and often heals conservatively, highlighting the particular relevance of conservative treatment modalities, many of which require daily re-applications or dressing changes, which can be painful and tedious for both the patient and the healthcare providers. Motivated by encouraging results of a novel temporary nanofibrous epidermal layer, we herein present a case series of this technology in a case series of patients suffering from facial burns and treated in our Burn Center. PATIENTS AND METHODS: Patients with superficial partial-thickness facial burns and mixed pattern burns, which were treated with SpinCare™, an electrospun nanofibrous temporary epidermal layer, between 2019 and 2021, at our institution were analyzed retrospectively. The Manchester scar scale (MSS) and numeric rating scale (NRS) were used for scar, pain, and outcome evaluation at different time points by five independent board-certified plastic surgeons with profound experience in burn surgery. RESULTS: Ten patients (m = 9; f = 1) were treated and evaluated retrospectively. The mean age was 38.8 ± years (SD ± 17.85). The mean healing time was 6.4 days (SD ± 1.56). The mean follow-up was 16.4 months (SD ± 11.33). The mean MSS score was 5.06 (SD ± 1.31), and the mean NRS Score for pain was significantly reduced from initially 7 to 0.875 upon application (mean (pre-application) 7 ± 0.7 and (application) 0.875 ± 1.26; p ≤ 0.0001). Patients reported a NRS score of 10 in terms of functional and cosmetic outcomes at their final follow-up appointment. No adverse effects were observed. CONCLUSIONS: The application of a nanofibrous temporary epidermal layer such as SpinCare™ represents a relatively easy-to-use, well-tolerated, and effective alternative for the treatment of partial-thickness facial burns.

7.
Surg J (N Y) ; 9(3): e82-e88, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-37434873

RESUMEN

Background One of the most essential goals in managing complex limb defects is obtaining adequate soft tissue coverage with excellent functional and aesthetic outcomes. Free perforator skin flaps represent an optimal option for such defects. Therefore, our intention was to reconstruct these kinds of defects with thin fasciocutaneous flaps without the need for debulking. Herein, we define the legitimate use of the medial sural artery perforator (MSAP) flaps for small-moderate size defect coverage of the hand and foot. Patients and Methods Seven patients received MSAP flaps for reconstruction of different hand and foot defects, of which the majority were males (4/7). Age, sex, flap size, location, number of perforators, recipient vessel, type of anastomosis, technique of donor site closure, and postoperative morbidity were recorded. Patients' age ranged from 48 to 84 years. Results Single-stage debridement followed by reconstruction was performed. Flap sizes ranged from 6 to 18 cm in length and 4 to 10 cm in width. The pedicles of 6 flaps were anastomosed to the tibial artery system (three posterior tibial artery, three dorsalis pedis artery) and one to the ulnar artery. Conclusion MSAP flap can be a versatile option for single-stage reconstruction of small-moderate size defects of the extremities, where thin, soft tissue envelope is required. This flap has lower donor site morbidity, more tedious elevation process, and has a good reconstructive and aesthetic result without the need for debulking in the future.

8.
Surg Infect (Larchmt) ; 23(8): 747-753, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36191292

RESUMEN

Background: Necrotizing fasciitis is a potentially fatal soft tissue infection in which the timing of surgical intervention significantly affects clinical outcome. The Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score, the Site other than the lower limb, Immunosuppression, Age <60 years, Renal impairment (creatinine >141), and Inflammatory markers (CRP ≥150, WCC >25) (SIARI) score, and procalcitonin levels are intended to aid in the decision-making process to differentiate between necrotizing fasciitis and soft tissue infections. Methods: A retrospective analysis of cases of necrotizing fasciitis and soft tissue infections treated at Klinikum Nürnberg was performed. The two scores as well as procalcitonin levels were tested for their diagnostic value and a new score, the Laboratory and Anamnestic Risk Indicator for Necrotizing Fasciitis (LARINF), was created based on the results. Results: Procalcitonin, LRINEC score, and SIARI score showed insufficient discriminatory ability in our study. The newly created LARINF score combined laboratory parameters of the LRINEC score (hemoglobin and C-reactive protein) with procalcitonin and three comorbidities, resulting in a sensitivity of 84% and a specificity of 75% and the highest area under the receiver operating characteristic (ROC) curve of 0.83. Conclusions: The LARINF score is a novel decision-supporting tool. The decision, in which cases surgical exploration should be initiated, remains a clinical one. However, the score seems to provide an improved basis for identifying a rare clinical picture.


Asunto(s)
Fascitis Necrotizante , Infecciones de los Tejidos Blandos , Proteína C-Reactiva , Creatinina , Fascia , Fascitis Necrotizante/diagnóstico , Humanos , Persona de Mediana Edad , Polipéptido alfa Relacionado con Calcitonina , Estudios Retrospectivos , Factores de Riesgo , Infecciones de los Tejidos Blandos/diagnóstico
9.
Int J Artif Organs ; 44(11): 880-886, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34496659

RESUMEN

In general, matrices for tissue engineering must maintain structural integrity during the process of tissue formation and promote vascularization of developing tissue. Therefore, collagen sponges, manufactured by an approach that offers the potential of unidirectional pore size, were seeded with human umbilical vein endothelial cells (HUVEC) to demonstrate a positive effect on cell proliferation. In addition, vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) have been used to promote proliferation of HUVEC on optimized collagen sponges. Growth and viability of the cells were evaluated. Potential unidirectional pore structure demonstrated an improvement of both, endothelial cell growth and viability. Supplementation of growth factors showed an additional increase of endothelial cell growth on collagen sponges, which confirmed the high potential of combining this biomaterial with growth factors. The results suggest that a collagen sponge with a potential specific pore size could be a suitable scaffold for endothelial cells and might be a promising implantable biomaterial with enhanced angiogenic capabilities for future clinical applications.


Asunto(s)
Proliferación Celular , Colágeno , Células Endoteliales de la Vena Umbilical Humana/citología , Materiales Biocompatibles , Factor 2 de Crecimiento de Fibroblastos , Humanos , Neovascularización Fisiológica , Factor A de Crecimiento Endotelial Vascular
10.
Healthcare (Basel) ; 9(6)2021 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-34063809

RESUMEN

(1) Background: Nowadays, the use of microsurgical free flaps is a standard operative procedure in reconstructive surgery. Still, thrombosis of the microanastomosis is one of the most fatal postoperative complications. Clinical evaluation, different technical devices and laboratory markers are used to monitor critical flap perfusion. Macrophage migration inhibitory factor (MIF), a structurally unique cytokine with chemokine-like characteristics, could play a role in predicting vascular problems and the failure of flap perfusion. (2) Methods: In this prospective observational study, 26 subjects that underwent microsurgical reconstruction were observed. Besides clinical data, the number of blood leukocytes, CRP and MIF were monitored. (3) Results: Blood levels of MIF, C-reactive protein (CRP) and leukocytes increased directly after surgery. Subjects that needed surgical revision due to thrombosis of the microanastomosis showed significantly higher blood levels of MIF than subjects without revision. (4) Conclusion: We conclude that MIF is a potential and innovative indicator for thrombosis of the microanastomosis after free flap surgery. Since it is easy to obtain diagnostically, MIF could be an additional tool to monitor flap perfusion besides clinical and technical assessments.

11.
Medicina (Kaunas) ; 57(4)2021 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-33915729

RESUMEN

BACKGROUND: Integrative medicine focuses on the human being as a whole-on the body, mind, and spirit-to achieve optimal health and healing. As a synthesis of conventional and complementary treatment options, integrative medicine combines the pathological with the salutogenetic approach of therapy. The aim is to create a holistic system of medicine for the individual. So far, little is known about its role in plastic surgery. HYPOTHESIS: We hypothesize that integrative medicine based on a conventional therapy with additional anthroposophic therapies is very potent and beneficial for plastic surgery patients. Evaluation and consequence of the hypothesis: Additional anthroposophic pharmacological and non-pharmacological treatments are promising for all areas of plastic surgery. We are convinced that our specific approach will induce further clinical trials to underline its therapeutic potential.


Asunto(s)
Medicina Integrativa , Procedimientos de Cirugía Plástica , Cirugía Plástica , Humanos
12.
J Plast Surg Hand Surg ; 54(3): 137-144, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32281469

RESUMEN

Background: The macrophage migration inhibitory factor (MIF) has been determined as a cytokine exerting a multitude of effects in inflammation and angiogenesis. Earlier studies have indicated that MIF may also be involved in wound healing and flap surgery. Methods: We investigated the effect of MIF in an excisional wound model in wildtype, Mif-/- and recombinant MIF treated mice. Wound closure rates as well as the macrophage marker Mac-3, the pro-inflammatory cytokine tumor necrosis factor α (TNFα) and the pro-angiogenic factor von Willebrand factor (vWF) were measured. Finally, we used a flap model in Mif-/- and WT mice with an established perfusion gradient to identify MIF's contribution in flap perfusion. Results: In the excision wound model, we found reduced wound healing after MIF injection, whereas Mif deletion improved wound healing. Furthermore, a reduced expression of Mac-3, TNFα and vWF in Mif-/- mice was seen when compared to WT mice. In the flap model, Mif-/- knockout mice showed mitigated flap perfusion with lower hemoglobin content and oxygen saturation as measured by O2C measurements when compared to WT mice. Conclusions: Our data suggest an inhibiting effect of MIF in wound healing with increased inflammation and perfusion. In flaps, by contrast, MIF may contribute to flap vascularization.


Asunto(s)
Antígenos de Diferenciación/fisiología , Cicatrización de Heridas/fisiología , Animales , Antígenos de Diferenciación/genética , Antígenos de Diferenciación/metabolismo , Hemoglobinas/análisis , Ratones Endogámicos C57BL , Ratones Noqueados , Oxígeno/metabolismo , Flujo Sanguíneo Regional , Colgajos Quirúrgicos/irrigación sanguínea , Factor de Necrosis Tumoral alfa/metabolismo , Factor de von Willebrand/metabolismo
13.
Front Cell Dev Biol ; 6: 170, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30666305

RESUMEN

Wnt signaling plays a central regulatory role across a remarkably diverse range of functions during embryonic development, including those involved in the formation of bone and cartilage. Wnt signaling continues to play a critical role in adult osteogenic differentiation of mesenchymal stem cells. Disruptions in this highly-conserved and complex system leads to various pathological conditions, including impaired bone healing, autoimmune diseases and malignant degeneration. For reconstructive surgeons, critically sized skeletal defects represent a major challenge. These are frequently associated with significant morbidity in both the recipient and donor sites. The Wnt pathway is an attractive therapeutic target with the potential to directly modulate stem cells responsible for skeletal tissue regeneration and promote bone growth, suggesting that Wnt factors could be used to promote bone healing after trauma. This review summarizes our current understanding of the essential role of the Wnt pathway in bone regeneration and repair.

14.
Clin Pract ; 6(4): 879, 2016 Oct 24.
Artículo en Inglés | MEDLINE | ID: mdl-28176971

RESUMEN

We report about a dorsal dislocation of the lunate accompanied by a trapezoid fracture in a 41-year old male patient after a motorcycle accident. The lunate dislocation with no dorsal or volar intercalated segment instability (DISI, VISI) was diagnosed by x-ray whereas the trapezoid fracture was only diagnosable by computed tomography. A closed reduction and internal fixation of the lunate by two Kirschner wires was performed, the trapezoid fracture was conservatively treated. Surgery was followed by immobilization, intense physiotherapy and close follow-up. Even though complaints such as swelling and pain subsided during the course of rehabilitation, partial loss of strength and range of motion remained even after 16 months. In conclusion, a conservative treatment of trapezoid fractures seems to be sufficient in most cases. Closed reduction with K-wire fixation led to an overall satisfactory result in our case. For dorsal lunate dislocations in general, open reduction should be performed when close reduction is unsuccessful or DISI/VISI are observed in radiographs after attempted close reduction.

15.
J Reconstr Microsurg ; 32(3): 169-77, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26372687

RESUMEN

BACKGROUND: The spontaneous reinnervation of free flaps, such as deep inferior epigastric perforator (DIEP) flaps, is not fully understood, and few publications have investigated this issue. The aim of this study was to examine spontaneous reinnervation following breast reconstruction with autologous DIEP flaps without an additional nerve transfer. METHODS: In a retrospective clinical study, 18 female patients were investigated for a mean of 49.59 months (range, 12-88 months) following breast reconstruction with a unilateral DIEP flap. Five sensory modalities were tested: pressure perception, dynamic two-point discrimination, sharp-blunt discrimination, hot and cold discrimination, and vibration perception threshold (VPT). The measurements were performed on the reconstructed breast, flap surrounding transition zone, healthy contralateral breast, and the donor site. For a more precise analysis all breasts have been divided into five different segments (mediocranial, laterocranial, mediocaudal, laterocaudal, and reconstructed nipple-areola complex, if present). Additionally, tissue oxygen saturation and tissue hemoglobin were measured by laser Doppler spectroscopy. RESULTS: Spontaneous reinnervation of at least one modality tested was observed in all DIEP flaps (n = 18). This sensitive recovery increases over the postoperative period. The maximum difference between the controls and DIEP flaps was observed in cold perception, whereas the least difference was observed in the VPT. Regarding the different segments, we observed better sensitive recovery in the cranial parts of the DIEP flaps and the transition zone. CONCLUSION: This study provides certain predictions for patients and surgeons, when and to which extent spontaneous reinnervation can be expected.


Asunto(s)
Arterias Epigástricas , Mamoplastia/métodos , Colgajo Perforante/inervación , Sensación/fisiología , Adulto , Comorbilidad , Femenino , Humanos , Persona de Mediana Edad , Calidad de Vida , Estudios Retrospectivos
16.
PLoS One ; 10(9): e0137366, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26348853

RESUMEN

Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine and has been implicated in inflammatory diseases. However, little is known about the regulation of MIF in adipose tissue and its impact on wound healing. The aim of this study was to investigate MIF expression in inflamed adipose and determine its role in inflammatory cell recruitment and wound healing. Adipose tissue was harvested from subcutaneous adipose tissue layers of 24 healthy subjects and from adipose tissue adjacent to acutely inflamed wounds of 21 patients undergoing wound debridement. MIF protein and mRNA expression were measured by ELISA and RT-PCR. Cell-specific MIF expression was visualized by immunohistochemistry. The functional role of MIF in cell recruitment was investigated by a chemotaxis assay and by flow cytometry of labeled macrophages that were injected into Mif-/-and wildtype mice. Wound healing was evaluated by an in vitro scratch assay on human fibroblast monolayers. MIF protein levels of native adipose tissue and supernatants from acutely inflamed wounds were significantly elevated when compared to healthy controls. MIF mRNA expression was increased in acutely inflamed adipose tissue indicating the activation of MIF gene transcription in response to adipose tissue inflammation. MIF is expressed in mature adipocytes and in infiltrated macrophages. Peripheral blood mononuclear cell migration was significantly increased towards supernatants derived from inflamed adipose tissue. This effect was partially abrogated by MIF-neutralizing antibodies. Moreover, when compared to wildtype mice, Mif-/-mice showed reduced infiltration of labeled macrophages into LPS-stimulated epididymal fat pads in vivo. Finally, MIF antibodies partially neutralized the detrimental effect of MIF on fibroblast wound healing. Our results indicate that increased MIF expression and rapid activation of the MIF gene in fat tissue adjacent to acute wound healing disorders may play a role in cell recruitment to the site of inflammation and wound healing.


Asunto(s)
Tejido Adiposo/metabolismo , Movimiento Celular/genética , Inflamación/genética , Oxidorreductasas Intramoleculares/biosíntesis , Factores Inhibidores de la Migración de Macrófagos/biosíntesis , Adipocitos/metabolismo , Adipocitos/patología , Tejido Adiposo/patología , Adulto , Anciano , Animales , Femenino , Regulación de la Expresión Génica , Humanos , Inflamación/patología , Oxidorreductasas Intramoleculares/genética , Leucocitos Mononucleares/metabolismo , Leucocitos Mononucleares/patología , Factores Inhibidores de la Migración de Macrófagos/genética , Macrófagos/metabolismo , Macrófagos/patología , Masculino , Ratones , Ratones Noqueados , Persona de Mediana Edad , ARN Mensajero/biosíntesis , Cicatrización de Heridas/genética
17.
Case Rep Surg ; 2015: 562810, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26064762

RESUMEN

Introduction. Necrotizing fasciitis is an uncommon condition in general practice but one that provokes serious morbidity. It is characterized by widespread fascial necrosis with relative sparing of skin and underlying muscle. Herein, we report a fatal case of necrotizing fasciitis in a young healthy woman after episiotomy. Case Report. A 17-year-old primigravida underwent a vaginal delivery with mediolateral episiotomy. Necrotizing fasciitis was diagnosed on the 5th postpartum day, when the patient was referred to our tertiary care medical center. Surgical debridement was initiated together with antibiotics and followed by hyperbaric oxygen therapy. The patient died due to septic shock after 16 hours from the referral. Conclusion. Delay of diagnosis and consequently the surgical debridement were most likely the reasons for maternal death. In puerperal period, a physician must consider necrotizing fasciitis as a possible diagnosis in any local sings of infection especially when accompanied by fever and/or tenderness. Early diagnosis is the key for low mortality and morbidity.

18.
J Burn Care Res ; 36(2): e55-61, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25522155

RESUMEN

The objective of this study was to evaluate the role of intraalveolar tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in a combination of skin burn and smoke inhalation injuries because this combined trauma is associated with an increased morbidity and mortality compared with either of these traumas alone. We used a standardized small animal model (rats n = 84) to investigate the early intraalveolar excretion of TNF-α during the first one, three, and six hours after a singular skin burn injury, singular smoke inhalation injury, and a combination involving both the traumas. The data were compared with the data from control rats that only received preparation and mechanical ventilation. The TNF-α serum levels and intraalveolar IL-6 concentrations were also measured. One hour after trauma, there was a significant difference in the TNF-α concentration between the controls and both the singular traumas (control vs burn P < .0444 and control vs smoke P < .005) and between the inhalation injury and the combined trauma (smoke vs burn + smoke P < .0084). After three and six hours, no significant differences among the groups were observed. Compared with the controls, both the singular skin burn and smoke inhalation injuries led to increased intraalveolar TNF-α excretion, whereas the combined trauma showed the least intraalveolar TNF-α levels at three and six hours post-trauma. These findings differed from the serum TNF-α levels. Compared with the IL-6 levels, we observed a negative correlation within the intraalveolar cytokine concentrations after one hour (r = -.809), three hours (r = -.627), and six hours (r = -.746). This study confirms the importance of the intraalveolar cytokine reaction in the early posttraumatic stage after a combined burn and inhalation injury. The differences between the combined and singular traumas indicate that TNF-α plays a role in the immunologic hyporesponsiveness of the lung and therefore in the systemic pathophysiological pathway, that often leads to patient mortality. In addition, an inverse correlation between TNF-α and IL-6, both classical markers of inflammation, in the intraalveolar space was observed.


Asunto(s)
Quemaduras/metabolismo , Interleucina-6/sangre , Lesión por Inhalación de Humo/metabolismo , Factor de Necrosis Tumoral alfa/sangre , Animales , Líquido del Lavado Bronquioalveolar/inmunología , Estudios de Casos y Controles , Femenino , Macrófagos Alveolares/metabolismo , Masculino , Modelos Animales , Ratas , Factores de Riesgo
20.
Curr Pediatr Rev ; 10(4): 304-8, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25594530

RESUMEN

PURPOSE: Neonatal mastitis is a rare but challenging problem that commonly appears within the first 8 weeks after birth. Abscess formation in an infant's breast can lead to acute complications and longterm dysfunction. To our knowledge, no publication focuses on surgical techniques and postoperative care to avoid breast scarring in neonates. We herein present our surgical approach by periareolar drainage to avoid this long term complications. METHODS: After reviewing the medical database of our hospital from 2002 to 2012, 11 cases (6 females and 5 males; 10 unilateral and 1 bilateral) of neonatal mastitis were found. Four cases required surgery, performed by periareolar drainage (n = 4, 4:11). Our data were compared with data obtained from a literature review using Medline and Cochrane databases. RESULTS: In all our patients that underwent surgery, clinical symptoms were reduced directly after surgery. Our results were comparable with those reported in the literature, which included 163 patients (105 [64.42%] required surgery) from seven publications. Regarding our surgical technique, we have not observed any long-term complications during follow up examinations (range 12-116 months postoperative; mean, 77.36 months), which have been reported in the literature. CONCLUSIONS: Even if the acute infection can be cured by parenteral antibiotics and surgical incision if necessary, the longterm problems of scarring after mastitis, especially from surgical incisions at the site of maximum swelling, can lead to severe functional and aesthetic problems. To avoid such scarring, we herein present our surgical approach to mastitis by periareolar drainage.


Asunto(s)
Drenaje/métodos , Mastitis/cirugía , Absceso/diagnóstico por imagen , Enfermedades de la Mama/diagnóstico por imagen , Cicatriz/prevención & control , Femenino , Humanos , Recién Nacido , Masculino , Mastitis/diagnóstico por imagen , Ultrasonografía
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