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1.
J Clin Med ; 13(7)2024 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-38610780

RESUMO

Background: Maxillofacial microvascular free-flap reconstructions are significant interventions in the management of congenital defects, traumatic injuries, malignancies, and iatrogenic complications in pediatric and young adult patients. Craniofacial disorders within this demographic can result in profound functional, cosmetic, and psychosocial impairments, highlighting the critical need for thorough investigation into factors that may influence procedural success and postoperative quality of life. This retrospective chart review aims to examine the outcomes and potential influencing factors, aiming to offer valuable insights into optimizing the effectiveness of these reconstructions and improving patient outcomes. Methods: A single head and neck surgical team performed all the included 136 procedures. Demographic and surgical patient data were recorded. Type of transfer performed in each recipient site and major complications were analyzed. Relevant influencing factors, such as age, gender, and etiology of defect were determined using the ANOVA test and χ2 test of independence. Results: The results indicate a 90% success rate. No significant relationship was found between the incidence of total flap loss and patient age, etiology, or graft source. The maxillary reconstructions showed a higher incidence of total flap loss compared to mandibular reconstructions (11 vs. 3 cases). Conclusions: Despite the high success rate, the findings underline the necessity for further research to validate these observations and enhance surgical methods for pediatric and young adult patients.

2.
Stem Cell Res Ther ; 15(1): 27, 2024 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-38303049

RESUMO

BACKGROUND: Adipose-derived stromal cells (ADSCs) demonstrate ability to promote tissue healing and down-regulate excessive inflammation. ADSCs have been used to treat critical limb ischemia in preclinical and clinical trials, but still, there is little known about their optimal delivery strategy. To date, no direct analysis of different methods of ADSCs delivery has been performed in the hindlimb ischemia model. Therefore, in this study we focused on the therapeutic efficacy of different ADSCs delivery methods in a murine model of hindlimb ischemia. METHODS: For the hADSCs isolation, we used the subcutaneous adipose tissue collected during the surgery. The murine hindlimb ischemia was used as a model. The unilateral femoral artery ligation was performed on 10-12-week-old male C57BL/6. ADSCs were delivered directly into ischemic muscle, into the contralateral muscle or intravenously. 7 and 14 days after the surgery, the gastrocnemius and quadriceps muscles were collected for the immunohistochemical analysis. The results were analyzed with relevant tests using the Statistica software. RESULTS: Our research revealed that muscle regeneration, angiogenesis, arteriogenesis and macrophage infiltration in murine model of hindlimb ischemia differ depending on ADSCs delivery method. We have demonstrated that intramuscular method (directly into ischemic limb) of ADSCs delivery is more efficient in functional recovery after critical limb ischemia than intravenous or contralateral route. CONCLUSIONS: We have noticed that injection of ADSCs directly into ischemic limb is the optimal delivery strategy because it increases: (1) muscle fiber regeneration, (2) the number of capillaries and (3) the influx of macrophages F4/80+/CD206+.


Assuntos
Tecido Adiposo , Isquemia Crônica Crítica de Membro , Camundongos , Masculino , Humanos , Animais , Modelos Animais de Doenças , Neovascularização Fisiológica , Membro Posterior/irrigação sanguínea , Músculo Esquelético , Isquemia/terapia , Células Estromais
3.
Eur J Med Res ; 28(1): 386, 2023 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-37770987

RESUMO

BACKGROUND: Mandible tumors are very rare. One of the main methods of the treatments is resection of the tumor and then reconstruction of the mandible. The donor site is often distant tissue-fibula or ilium. Following this, it is necessary to improve the patient in two ways, on one hand restoring the function of the mandible, and on the other hand, improving the donor site area. For that reason, physiotherapy after tumor resection and reconstruction of the mandible is very complicated. The aim of this bibliographic review was to find the methods of the reconstruction of the mandible in the context of patients' functional assessment after surgeries to create effective physiotherapeutic procedures in the feature. METHODS: PEDro, Medline (PubMed), Cochrane Clinical Trials were searched. RESULTS: 767 articles were found. 40 articles were included to this literature review. CONCLUSIONS: Authors showed different kinds of surgeries strategy for patients with tumors of the mandible. They also showed manners of patients' functional assessment in the localization of transplantation and donor site. It could be useful for physiotherapists during planning of comprehensive physiotherapy.


Assuntos
Neoplasias Mandibulares , Procedimentos de Cirurgia Plástica , Humanos , Transplante Ósseo/métodos , Mandíbula/cirurgia , Neoplasias Mandibulares/cirurgia , Fíbula/cirurgia
4.
Otolaryngol Pol ; 77(2): 1-5, 2023 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-36806468

RESUMO

The authors would like to present the possibilities of reconstructive surgery using free microvascular flaps with bone elements in the treatment of cavities in the head and neck area. The cavities in the presented article resulted both from resection of tumors in the head and neck area as well as congenital defects and radiation damage. The authors would like to discuss the difficulties that may arise during the postoperative period, including the maintenance of the graft's viability, the healing of the donor site and systemic problems. The article presents 33 reconstruction surgeries performed on 31 patients using different flaps, briefly describing their advantages and technical difficulties that may arise during the microvascular anastomoses. The authors emphasise the importance of a well-conducted qualification for the surgery as well as the need to discuss the course of the surgery and recovery and other possible treatment options with patients and their families. The complications that happened in the presented group and how they were treated are described. The authors discuss in details the 3 cases with different types of reconstructive procedures and draw attention to the importance of postoperative care consisting of the constant monitoring of the viability of the graft carried out by qualified personnel of the Otolaryngology Department and appropriately conducted anticoagulant therapy.


Assuntos
Retalhos de Tecido Biológico , Otolaringologia , Humanos , Pescoço , Período Pós-Operatório
5.
J Clin Med ; 12(3)2023 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-36769772

RESUMO

This is a retrospective study describing a multi-stage protocol for the management of severe mandibular hypoplasia in craniofacial microsomia (CFM) with accompanying obstructive sleep apnea (OSA). Patients with severe mandibular hypoplasia require reconstruction functionality and esthetical features. In the cohort, reconstructions based on free fibular flaps (FFF) may be the most effective way. Patients aged 4-17 years with severe mandibular hypoplasia were treated with FFF, which initially improved the respiratory function assessed on polysomnography (AHI). In the next stages of treatment of cases with respiratory deterioration, it was indicated to perform distraction osteogenesis (DO) of the mandible and the structures reconstructed with FFF. All surgeries were planned in accordance with virtual surgery planning VSP. The aim of the study was to prospectively assess the effectiveness of multi-stage mandibular reconstruction in craniofacial microsomia with the use of a free fibula flap in terms of improving respiratory failure due to obstructive sleep apnea (OSA). The FFF reconstruction method, performed with virtual surgical planning (VSP), is proving to be an effective alternative to traditional methods of mandibular reconstruction in patients with severe CFM with OSA.

6.
Biomedicines ; 10(12)2022 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-36551770

RESUMO

BACKGROUND: Oral squamous cell carcinoma (OSCC) is one of the most commonly detected neoplasms worldwide. Not all mechanisms associated with cell cycle disturbances are known in OSCC. Examples of genes involved in the control of the cell cycle are CDKN2A, MDM2, E2F2 and LTF. The aim of this study was to examine the possible association between CDKN2A, MDM2, E2F2 and LTF mRNA expression and influence on clinical variables. METHODS: The study group consisted of 88 Polish patients. The gene expression levels were assessed by quantitative reverse transcription PCR. RESULTS: We found no statistically significant differences in the expression level of CDKN2A, MDM2, E2F2 and LTF genes in tumour samples compared to margin samples. No association was found between the gene expression levels and clinical parameters, except E2F2. The patients with G2 tumours had a significantly higher gene expression level of E2F2 than patients with low-grade G1 tumours. CONCLUSIONS: We have not demonstrated that a change in expression profiles of genes has a significant impact on the pathogenesis of OSCC. It may also be useful to conduct further studies on the use of E2F2 expression profile changes as a factor to describe the invasiveness and dynamics of OSCC development.

7.
Genes (Basel) ; 13(11)2022 11 10.
Artigo em Inglês | MEDLINE | ID: mdl-36360322

RESUMO

Oral squamous cell carcinoma (OSCC) is one of the most prevalent types of cancers worldwide. LTF arrests the G1 to S phase transition of the cell cycle. This study is the first that has aimed to determine the possible association between the LTF polymorphisms (rs2073495, rs1126478, rs34827868, rs1042073, rs4637321, rs2239692 and rs10865941), the mRNA LTF expression, the risk of OSCC and the influence on the TNM staging and histological grading. This study was composed of 176 Polish patients, including 88 subjects diagnosed with OSCC and 88 healthy individuals. QuantStudio Design and Analysis Software v1.5.1 was used for the single nucleotide polymorphism (SNP) analysis and mRNA LTF expression. The G/G genotype of rs2073495 and the G/G genotype of rs4637321 were linked, with an increased risk of OSCC. There were no significant influences between the TNM staging and the histological grading and the LTF genotype. We found no statistically significant dissimilarities in the expression level of LTF genes in the tumour and margin specimens. No association was found between the gene expression levels, the other parameters or LTF polymorphisms in the tumour and margin samples. In conclusion, rs2073495 and rs4637321 polymorphisms may affect the risk of OSCC. These results should be validated on larger and different cohorts to better comprehend the role of the LTF gene in OSCC.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Humanos , Neoplasias Bucais/genética , Neoplasias Bucais/patologia , Polimorfismo de Nucleotídeo Único , Carcinoma de Células Escamosas/genética , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas de Cabeça e Pescoço , Predisposição Genética para Doença , RNA Mensageiro/genética , Lactoferrina/genética
8.
J Craniofac Surg ; 33(3): e320-e322, 2022 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-35727660

RESUMO

ABSTRACT: Composite full-thickness nasal defects that include adjacent facial units still remain a challenge for reconstructive surgeons. The commonly used auricular free flap (AFF) might not be sufficient for full coverage of a defect, and radial forearm free flap (RFFF) lacks the rigid component for nasal framework. Therefore, the authors present a chimeric flap combined of both AFF and RFFF for the reconstruction of extended nasal defects. Auricular free flap enables the restoration of the exact contour of nose, and it preserves similar texture and color of the skin. Moreover, its harvesting results in minimal deformity of donor site. Radial forearm free flap gives the possibility of covering extensive defects of the facial units thanks to its elasticity and long vascular pedicle. The combination of both flaps seems to be an optimal solution for the reconstruction of extended nasal defects, giving satisfactory aesthetic results. Also, it might not require any further corrections, remaining a one-stage procedure.


Assuntos
Antebraço/cirurgia , Retalhos de Tecido Biológico , Nariz/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Rinoplastia/métodos , Humanos , Nariz/irrigação sanguínea , Procedimentos de Cirurgia Plástica/normas
9.
Oral Oncol ; 127: 105800, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35255279

RESUMO

INTRODUCTION: Post- resection defects in the area of the head and neck frequently result in functional impairment of the masticatory system and unaesthetic outcome in the facial appearance. In pediatric population they exert a devastating effect on speech development, breathing and facial growth leading to secondary deformations which are extremely challenging in reconstruction by means of conventional surgery protocols. MATERIAL AND METHODS: 21 patients (14 males/ 7 females) aged 4-17 years old, treated between 2015 and 2019 due to malignant/benign tumors or congenital deformities requiring mandible resection were enrolled in the study. All patients underwent Virtual Surgical Planning (VSP), mandible tumor resection with use surgery guides and defect reconstruction with microvascular bone graft supported with custom implants. Postoperatively, 3D models used for the planning and postoperative 3D model of the reconstructed mandible were compared using authors method based on easily measurable morphometric measurements (3 angles, 3 linear dimensions), allowing a three-dimensional quantitative assessment of postoperative outcomes of the surgery. Linear regression analysis and one-way analysis of variance were used to evaluate the clinical material. The difference was considered significant if p < 0.05. RESULTS: Free fibula flap (FFF) was most commonly used type of the reconstruction of the pediatric mandible. The average maximum deviation for the analyzed cases was 7.7 mm, and the average minimum deviation was -6.09 mm, however without significant differences and the postoperative position of the mandible condyle was comparable to the position designed in the 3DVSP preoperatively. Position of the whole reconstructed mandible by means of individually planned grafts and plates provided comparable position of the ramus and mandible body and no chin deviation as the differences between the pre-operative axial and sagittal angles and their post-operative equivalents were insignificant (p > 0,05). CONCLUSIONS: This study confirms applicability of the 3DVSP in pediatric craniomaxillofacial surgery. Preoperative planning of the osteotomies, grafting technique and production of the individualized guides and implants provides precise tumor resection and immediate reconstruction adjusted to the specific anatomy of the pediatric patients.


Assuntos
Retalhos de Tecido Biológico , Neoplasias Mandibulares , Reconstrução Mandibular , Adolescente , Criança , Pré-Escolar , Feminino , Fíbula/cirurgia , Retalhos de Tecido Biológico/cirurgia , Humanos , Masculino , Mandíbula/cirurgia , Neoplasias Mandibulares/cirurgia , Reconstrução Mandibular/métodos
10.
J Craniofac Surg ; 33(7): 1962-1970, 2022 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-35175985

RESUMO

ABSTRACT: Ameloblastoma (AM) is the most common, locally aggressive odontogenic tumor. It comprises about 1% of all head and neck neoplasms. It occurs mainly in young adults in their 3rd and 4th decade of life. It localizes in the mandible in about 80% of the cases. According to the 2017 WHO classification, 4 types of ameloblastoma can be distinguished: ameloblastoma (previously referred to as solid/multicystic-SMA; the "conventional type" AM), unicystic (AM-UA), extraosseous/peripheral (AM-PA), and malignant/metastatic (AM-MA). Solid, multicystic is the most common type. It is characteristic for its aggressiveness and high risk of recurrence. Radical resection with consecutive reconstruction is the treatment of choice of mandibular ameloblastomas.In this study, the authors present their experience in the surgical treatment of mandibular ameloblastomas with vascularized free flap reconstructions. They discuss new technological possibilities that could improve the precision of the reconstructive procedure and therefore result in the better aesthetic outcome.The retrospective study of a group of 21 patients suffering from mandibular ameloblastoma who underwent segmental man-dibulectomy with simultaneous microvascular free flap reconstruction was conducted. A thorough clinical analysis with various aspects was performed. Tumors resected before 2017 were double checked patomorphologically and assigned to the corrected subtype group.Seven patients were admitted to the department due to recurrent ameloblastoma. The most common localization of the tumor was the mandibular body ( n = 6) andbodywith ramus of the mandible ( n = 6). A total amount of 10 iliac crest free flaps and 12 fibular free flaps were performed. Complications were reported in 4 patients. A purulent oro-cutaneus fistula occurred in 3 patients. There was a flap failure in each reconstructive group. The virtual surgical planning with intraoperative cone-beam computed tomography was used in 3 patients. Dentition implantation was conducted in 4 patients (3 simultaneously, 1 postponed). The mean follow-up was 5 years and 8 months.Radical resection that covers radical segmental mandibulect-omy with immediate microvascular free flap reconstruction is a first-line and only effective treatment of mandibular ameloblas-tomas, that eliminates the risk of recurrence. The extent of surgical margins seems not to influence the recurrence rate, yet further investigation with statistical analysis should be performed. The choice of the adequate free flap must be adapted to dimensions and localization of the tumor and to each patient individually.New technologies such as virtual surgical planning with 3D models and intraoperative cone-beam computed tomography can make the reconstruction more accurate, improving patient's quality of life.


Assuntos
Ameloblastoma , Retalhos de Tecido Biológico , Neoplasias Mandibulares , Reconstrução Mandibular , Procedimentos de Cirurgia Plástica , Ameloblastoma/diagnóstico por imagem , Ameloblastoma/patologia , Ameloblastoma/cirurgia , Transplante Ósseo/métodos , Estética Dentária , Fíbula/cirurgia , Retalhos de Tecido Biológico/cirurgia , Humanos , Masculino , Mandíbula/cirurgia , Neoplasias Mandibulares/patologia , Neoplasias Mandibulares/cirurgia , Reconstrução Mandibular/métodos , Qualidade de Vida , Procedimentos de Cirurgia Plástica/métodos , Estudos Retrospectivos , Adulto Jovem
11.
J Craniofac Surg ; 33(6): 1655-1658, 2022 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-34907952

RESUMO

ABSTRACT: The restoration of large full-thickness lip defects still remains a formidable challenge for the reconstructive surgeons. Traumatic injuries, infections and tumors (primarily squamous cell carcinoma) are the most common source of the lip defects. Lower lips are more important in providing oral competence, unfortunately throughout the life-time they are significantly more exposed to ultraviolet radiation and thus are the most common site for the lip cancers (89%). This type of defect requires a complex reconstruction of an adequate sphincter function, defined vermilion, proper oral lining and sufficient mouth opening. To maintain the oral competence, it is of paramount importance to restore the function of orbicularis oris, which principally composes the body of the lip. Currently, the dynamic reconstructions are gaining considerable interest. They enables not only improvement of appearance but also a restoration of function and preservation of health-related quality of life. The use of the free gracilis muscle transfer to reconstruct the lower lip and its dynamic character in contrast to other, static reconstructions can provide the sufficient movement of the lower lip, which does not depend on function of other mimic muscles as it becomes an independent motor unit with its own neurotization. In our opinion the free functioning gracilis muscle flap, due to its anatomic and functional features as well as low-rate donor-site morbidity is the worth considering option for a lower lip reconstruction.


Assuntos
Músculo Grácil , Neoplasias Labiais , Procedimentos de Cirurgia Plástica , Músculo Grácil/cirurgia , Humanos , Lábio/cirurgia , Neoplasias Labiais/cirurgia , Qualidade de Vida , Raios Ultravioleta
12.
J Clin Med ; 10(11)2021 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-34073752

RESUMO

Functional and esthetic final reconstruction of the cleft maxilla is still challenging. Current reconstructive and augmentation techniques do not provide sufficient bone and soft tissue support for the predictable rehabilitation with dental implants due to presence of maxillary bone critical size defects and soft tissue deficiency, scaring and poor vascularity. In this article the protocol for the use of 3D virtual surgical planning and microvascular tissue transfers for the reconstruction and rehabilitation of cleft maxilla is presented. Twenty-five patients (8 male/17 female) aged 14-41 years old with cleft-associated critical size defects were treated by 3D-virtual planned microvascular tissue transfers taken either from fibula, iliac crest, radial forearm, or medial femoral condyle. Follow-up lasted 1-5 years. No significant bone resorption (p > 0.005) nor volume loss of the graft was observed (p = 0.645). Patients received final permanent prosthetic reconstruction of the anterior maxilla based on 2-5 dental implants, depending on the defect severity. This is the first study presenting the use of virtual planning in the final restoration of the cleft maxilla with microvascular tissue transfers and dental implants. Presented protocol provide highly functional and aesthetic results.

13.
Biomed Res Int ; 2021: 8098130, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33860054

RESUMO

Oral squamous cell carcinoma (OSCC) and oropharyngeal squamous cell carcinoma (OPSCC) are subgroups of head and neck squamous cell carcinoma. E2F Transcription Factor 2 (E2F2) could contribute to cancer development, because it plays a critical role in many cellular processes, including the cell cycle, proliferation, differentiation, DNA damage response, and cell death. In the current study, we assessed the associations of five E2F2 polymorphisms (rs6667575, rs3218121, rs3218211, rs3218148, and rs3218203) with OSCC and OPSCC and influence on the TNM staging and grading. This is the first such survey to concern the European population. The study included 94 primary tumour samples following surgical resection from patients, whereas the control group consisted of 99 healthy individuals. We tried a matching of cases and controls for age and sample size. DNA samples were genotyped by employing the 5' nuclease assay for allelic discrimination. Our results suggested that the most significant difference between the control group and the cancer group was the A/G heterozygote for rs3218121. Samples containing this genotype were mostly found in the control group. In our samples, rs6667575, rs3218121, rs3218211, and rs3218148 polymorphisms may affect the course of OSCC and OPSCC, while rs3218203 was not associated with OSCC and OPSCC. However, further studies are warranted to confirm our findings.


Assuntos
Fator de Transcrição E2F2/genética , Predisposição Genética para Doença , Neoplasias Orofaríngeas/genética , Polimorfismo de Nucleotídeo Único/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Adolescente , Adulto , Idoso , Estudos de Casos e Controles , Estudos de Coortes , Feminino , Estudos de Associação Genética , Humanos , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Estadiamento de Neoplasias , Fatores de Risco , Adulto Jovem
14.
J Craniofac Surg ; 32(5): e517-e519, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33770027

RESUMO

ABSTRACT: The main scope of the kiss flap technique is to harvest double-skin paddle flaps, narrower than those harvested in a standard manner and rearrange them side-by-side ("kissing") in order to match the exact size and contour of the defect. Apart from the possibility of custom-designing the desired shape of soft tissue coverage, the kiss technique enables tension-free direct closure of the donor site, reducing its morbidity and improving aesthetic appearance. In this paper, two patients with severe scalp defects after cancer resections are presented. Due to poor elasticity of surrounding tissues, complexity of composite defect together with extensive range of resection: the kiss technique was applied to the anterolateral thigh flap in both cases. Possibility of implementing the described method in almost all perforator-based flaps is encouraging. Although, prolonged operating time, the necessity of meticulous preoperative perforator mapping as well as extended surgical dissection should be taken into consideration when planning kiss flaps.


Assuntos
Retalho Perfurante , Procedimentos de Cirurgia Plástica , Lesões dos Tecidos Moles , Humanos , Couro Cabeludo/cirurgia , Lesões dos Tecidos Moles/cirurgia , Coxa da Perna/cirurgia , Resultado do Tratamento
15.
Acta Biochim Pol ; 67(4): 579-585, 2020 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-33242241

RESUMO

Colorectal cancer is a common malign disease of the gastrointestinal tract. The cancer survival rate depends on the stage of the disease at detection time. It is well known that several molecular mechanisms are involved in cancer and some molecules might affect or modulate cancerogenesis. The aim of the study was to assess the levels of sICAM-1, sELAM-1, TNFα and sTNFR1 protein in tumor and corresponding normal mucosa in a group of patients with colorectal adenocarcinoma and also associations of these parameters with demographic and clinical profiles of the patients. Tissue specimens were obtained during resection of neoplastic lesions. Protein levels were assayed in tissue homogenates by ELISA. The protein level of sICAM-1 in tumor was significantly increased in comparison to the corresponding normal mucosa (80.06 ng/mg vs 69.53 ng/mg, p=0.02). Furthermore, a significant positive correlation between sICAM-1 and sTNFR1 proteins levels in tumor (rs=0.58, p<0.001) and in corresponding normal mucosa (rs=0.48, p<0.001) was found. Also, significant correlations in corresponding normal mucosa were found between sELAM-1 and sICAM-1 (rs=0.58, p<0.001) and between sTNFR1 and sELAM-1 (rs=0.57, p<0.001). Significantly higher level of sTNFR1 in corresponding normal mucosa samples of patients with distant metastases was observed (p=0.04). Obtained results suggest that sICAM-1 protein could be considered as colorectal cancer marker. Furthermore, sTNFR1 also has the potential to become a good prognostic marker used during monitoring of the patients. Nevertheless, a further study in this area to confirm this correlation is required.


Assuntos
Adenocarcinoma/genética , Biomarcadores Tumorais/genética , Neoplasias Colorretais/genética , Molécula 1 de Adesão Intercelular/genética , Receptores Tipo I de Fatores de Necrose Tumoral/genética , Adenocarcinoma/mortalidade , Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores Tumorais/metabolismo , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/patologia , Neoplasias Colorretais/cirurgia , Selectina E/genética , Selectina E/metabolismo , Feminino , Expressão Gênica , Humanos , Molécula 1 de Adesão Intercelular/metabolismo , Mucosa Intestinal/citologia , Mucosa Intestinal/metabolismo , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Receptores Tipo I de Fatores de Necrose Tumoral/metabolismo , Análise de Sobrevida , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
17.
Pol Przegl Chir ; 92(5): 1-7, 2020 May 25.
Artigo em Inglês | MEDLINE | ID: mdl-33028725

RESUMO

<b>Introduction:</b> The nose is the central and probably the most important organ of the face. In view of the three-dimensional shape and variety of tissues, reconstructive surgery after tumor resection in this anatomical region requires the surgeon's knowledge of anatomy. <br><b>Materials and Method:</b> In the years 2010-2019, 48 patients were treated in the Oncological and Reconstructive Surgery Clinic for extended nasal tumors, which required the use of free microvascular flaps after resection for functional and aesthetic supply of anatomical structures of the nose. <br><b>Results:</b> In 48 patients, a total of 92 free microvascular flaps were used for nasal reconstruction including: radial forearm free flap in 24 patients, radial forearm free flap with radial bone in 14 patients, auricular free flap in 16 patients, radial forearm free flap in combination with auricle free flap in 7 patients, double auricular free flap in 6 patients, radial forearm free flap in combination with double auricular free flap in 4 patients. Total necrosis of the free flap was noted in 4 cases, partial in 6 patients. <br><b>Conclusions:</b> The presented surgical techniques using microvascular free flaps constitute a recognized method of treatment and should be used in everyday surgeon practice. The results demonstrated in this article allow to obtain optimal functional and aesthetic effects.


Assuntos
Neoplasias Nasais/cirurgia , Nariz/cirurgia , Rinoplastia/métodos , Retalhos Cirúrgicos/irrigação sanguínea , Expansão de Tecido/métodos , Adulto , Feminino , Antebraço , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Nariz/patologia , Neoplasias Nasais/patologia , Procedimentos de Cirurgia Plástica/métodos
18.
Eur J Pharmacol ; 883: 173354, 2020 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-32663541

RESUMO

Neovascularization, the process of new blood vessels formation in response to hypoxia induced signals, is an essential step during wound healing or ischemia repair. It follows as a cascade of consecutive events leading to new blood vessels formation and their subsequent remodeling to a mature and functional state, enabling tissue regeneration. Any disruption in consecutive stages of neovascularization can lead to chronic wounds or impairment of tissue repair. In the study we try to explain the biological basis of accelerated blood vessels formation in ischemic tissue after adipose tissue-derived stromal cells (ADSCs) administration. Experiments were performed on mouse models of hindlimb ischemia. We have evaluated the level of immune cells (neutrophils, macrophages) infiltration. The novelty of our work was the assessment of bone marrow-derived stem/progenitor cells (BMDCs) infiltration and their contribution to the neovascularization process in ischemic tissue. We have noticed that ADSCs regulated immune response and affected the kinetics and ratio of macrophages population infiltrating ischemic tissue. Our research revealed that ADSCs promoted changes in the morphology of infiltrating macrophages and their tight association with forming blood vessels. We assume that recruited macrophages may take over the role of pericytes and stabilize the new blood vessel or even differentiate into endothelial cells, which in consequence can accelerate vascular formation upon ADSCs administration. Our findings indicate that administration of ADSCs into ischemic muscle influence spatio-temporal distribution of infiltrating cells (macrophages, neutrophils and BMDCs), which are involved in each step of vascular formation, promoting effective ischemic tissue neovascularization.


Assuntos
Células Endoteliais/metabolismo , Macrófagos/metabolismo , Transplante de Células-Tronco Mesenquimais , Células-Tronco Mesenquimais/metabolismo , Músculo Esquelético/irrigação sanguínea , Neovascularização Fisiológica , Tecido Adiposo/citologia , Animais , Comunicação Celular , Transdiferenciação Celular , Células Cultivadas , Modelos Animais de Doenças , Células Endoteliais/patologia , Isquemia/metabolismo , Isquemia/fisiopatologia , Cinética , Macrófagos/patologia , Masculino , Células-Tronco Mesenquimais/patologia , Camundongos Endogâmicos C57BL , Fenótipo , Transdução de Sinais
19.
Acta Biochim Pol ; 67(2): 213-218, 2020 May 07.
Artigo em Inglês | MEDLINE | ID: mdl-32379408

RESUMO

The head and neck squamous cell carcinoma (HNSCC) is an aggressive human malignancy diagnosed in more than 800 000 new cases worldwide, and mostly arises in the oral cavity, oropharynx, larynx, hypopharynx, and nasopharynx. The study presented here aimed to determine a possible association of rs11515 and rs3088440 gene polymorphisms in the CDKN2A gene (cyclin dependent kinase inhibitor 2A), as well as rs769412 and rs937283 in the MDM2 gene (murine double minute 2), with oral cavity cancer in a sample of Polish population; CDKN2A is crucial in regulating the cell cycle while MDM2 is an oncogene involved in regulating cell proliferation and apoptosis. The study included 95 primary tumor samples following surgical resection from patients, and the control group consisted of 100 healthy individuals. DNA samples were genotyped by employing the 5' nuclease assay for allelic discrimination using TaqMan SNP Genotyping Assays (Applied Biosystems, USA). There was no significant association between any of the polymorphism (rs11515, rs3088440, rs769412 and rs937283) and the oral cavity cancer risk. We found that the AA homozygotes for rs3088440 were significantly more frequent in the control group (OR=0.046, p<0.0001). In addition, the GG genotype of rs769412 was not found in any group. We found no influence of the examined genotypes on clinicopathological parameters, such as T, N and grading values in patients with oral cavity cancer. The results of this study indicate that none of the investigated polymorphisms were associated with the risk of oral cavity cancer in the examined sample of the Polish population.


Assuntos
Inibidor p16 de Quinase Dependente de Ciclina/genética , Genes p16 , Neoplasias Bucais/genética , Polimorfismo de Nucleotídeo Único , Proteínas Proto-Oncogênicas c-mdm2/genética , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Adolescente , Adulto , Idoso , Alelos , Estudos de Casos e Controles , Feminino , Genótipo , Homozigoto , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Bucais/patologia , Fatores de Risco , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia , Adulto Jovem
20.
Pol Przegl Chir ; 93(1): 9-14, 2020 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-33729171

RESUMO

<b>Introduction:</b> The perforation of gloves during surgical procedures is quite common. A cheap and quite effective method of reducing the risk of blood-borne infections is wearing two pairs of gloves. Unfortunately, some surgeons are reluctant to it, and they report decreased dexterity and sensation. The aim of the study was to evaluate surgeons' double-gloving practices to determine the factors related to compliance. <br><b>Material and methods:</b> An anonymous, 21-question survey in Polish was sent by post to 41 surgical departments. The questions concerned: demographic data, type of surgical gloves used, allergy to latex, number of surgeries performed, frequency of using double gloves and negative impressions from using them and finally, the frequency of needlestick injuries during surgical procedures. <br><b>Results:</b> We received 179 questionnaires back. More than 62% of the surgeons believe that double gloves provide better protection than a single pair, 24% do not believe in this, and 14% have no opinion. Only 0.6% of respondents always use double gloves during surgery, 19% double glove in at least 25% of cases and 68% do it occasionally. 13% of the surgeons declared that they had never worn double gloves. During high-risk procedures, 86% of respondents wear double gloves. About half of respondents (50.3%) report discomfort while wearing double gloves; 45% - decreased dexterity; about 30% complain of numbness and tingling; and 64% - decreased sensation. <br><b>Conclusion:</b> Due to the high number of surgical glove perforations and relatively high prevalence of needlestick injuries, it is necessary to use methods that reduce the risk of transmission of pathogens. The habit of using a double pair of gloves should be implemented especially among young surgeons starting to train in their specialities. Consequently, the period of initial discomfort will be combined with the acquisition of surgical skills, which will allow for gradual acclimatization.


Assuntos
Falha de Equipamento/estatística & dados numéricos , Luvas Cirúrgicas/efeitos adversos , Transmissão de Doença Infecciosa do Paciente para o Profissional/prevenção & controle , Transmissão de Doença Infecciosa do Profissional para o Paciente/prevenção & controle , Ferimentos Penetrantes Produzidos por Agulha/prevenção & controle , Complicações Pós-Operatórias/prevenção & controle , Atitude do Pessoal de Saúde , Competência Clínica , Luvas Cirúrgicas/estatística & dados numéricos , Traumatismos da Mão/prevenção & controle , Humanos , Ferimentos Penetrantes Produzidos por Agulha/epidemiologia , Doenças Profissionais/prevenção & controle
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