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1.
Int J Mol Sci ; 25(12)2024 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-38928050

RESUMO

Oral squamous cell carcinoma (OSCC) is the most common malignant tumor of the head and neck with an extremely poor five-year survival rate of approximately 50 to 55%, despite significant advances in diagnostic and therapeutic procedures over the past three decades [...].


Assuntos
Carcinogênese , Neoplasias Bucais , Humanos , Neoplasias Bucais/terapia , Neoplasias Bucais/etiologia , Neoplasias Bucais/patologia , Carcinogênese/patologia , Carcinoma de Células Escamosas/terapia , Carcinoma de Células Escamosas/etiologia , Carcinoma de Células Escamosas/patologia
2.
Int J Mol Sci ; 25(6)2024 Mar 08.
Artigo em Inglês | MEDLINE | ID: mdl-38542090

RESUMO

Gliomas are notably challenging to treat due to their invasive nature and resistance to conventional therapies. The ABCG2 protein has attracted attention for its role in multidrug resistance, complicating treatment effectiveness. This study scrutinized the relationship between ABCG2 expression and glioma grade and the role of ABCG2 in the process of glioma progression, aiming to evaluate ABCG2 expression as a predictive factor of tumor progression and patient survival. Conducted at Dubrava University Hospital, Zagreb, Croatia, the study analyzed 152 glioma specimens from 2013 to 2022, assessing ABCG2 expression alongside standard clinical markers. A significant association was found between patients' survival and the ABCG2 profile (p = 0.003, r = 0.24), separately for patients who underwent chemotherapy (p = 0.0004, r = 0.32) and radiotherapy (p = 0.003, r = 0.29). Furthermore, the ABCG2 profile was significantly associated with disease progression (p = 0.007, r = 0.23), tumor grade (p = 0.0002, r = 0.31), and Ki67 expression (p = 0.0004, r = 0.31). ABCG2-positive tumor cells only showed association with Ki67 expression (p = 0.002, r = 0.28). The ABCG2 profile was found to affect the overall patient survival (p = 0.02) and represent a moderate indicator of tumor progression (p = 0.01), unlike the percentage of ABCG2-positive tumor cells. ABCG2 may serve as a marker of angiogenesis and vascular abnormalities within tumors, predicting glioma progression and treatment response. Targeting ABCG2 could enhance chemoradiotherapy efficacy and improve patient outcomes, which highlights its value in assessing tumor aggressiveness and designing treatment strategies.


Assuntos
Neoplasias Encefálicas , Glioma , Humanos , Neoplasias Encefálicas/metabolismo , Antígeno Ki-67/metabolismo , Glioma/metabolismo , Resultado do Tratamento , Membro 2 da Subfamília G de Transportadores de Cassetes de Ligação de ATP/genética , Proteínas de Neoplasias/metabolismo
3.
Int J Mol Sci ; 24(6)2023 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-36982894

RESUMO

The aim of this study was to determine, by immunohistochemical methods, the expression of nEGFR and markers of cell proliferation (Ki-67), cell cycle (mEGFR, p53, cyclin D1), and tumor stem cells (ABCG2) in 59 pathohistological samples of healthy oral mucosa, 50 oral premalignant changes (leukoplakia and erythroplakia), and 52 oral squamous cell carcinomas (OSCC). An increase in the expression of mEGFR and nEGFR was found with the development of the disease (p < 0.0001). In the group of patients with leukoplakia and erythroplakia, we found a positive correlation between nEGFR and Ki67, p53, cyclin D1, and mEGFR, whereas in the group of patients with OSCC, we found a positive correlation between nEGFR and Ki67, mEGFR (p < 0.05). Tumors without perineural (PNI) invasion had a higher expression of p53 protein than tumors with PNI (p = 0.02). Patients with OSCC and overexpression of nEGFR had shorter overall survival (p = 0.004). The results of this study suggest a potentially important independent role of nEGFR in oral carcinogenesis.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Humanos , Neoplasias Bucais/patologia , Carcinoma de Células Escamosas/patologia , Proteína Supressora de Tumor p53/metabolismo , Ciclina D1/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço , Antígeno Ki-67/metabolismo , Leucoplasia , Receptores ErbB/metabolismo
4.
Int J Mol Sci ; 24(20)2023 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-37894949

RESUMO

Tumor necrosis is a recurrent characteristic of head and neck squamous cell carcinomas (HNSCCs). There is a need for more investigations on the influence of biomolecules released by these necrotic foci in the HNSCC tumor microenvironment. It is suspected that a fraction of the biomolecules released by necrotic cells are damage-associated molecular patterns (DAMPs), which are known to be natural endogenous ligands of Toll-like receptors (TLRs), including, among others, proteins and nucleic acids. However, there has been no direct demonstration that biomolecules released by HNSCC necrotic cells can activate TLRs. Our aim was to investigate whether some of these molecules could behave as agonists of the TLR3, either in vitro or in vivo. We chose a functional approach based on reporter cell exhibiting artificial TLR3 expression and downstream release of secreted alkaline phosphatase. The production of biomolecules activating TLR3 was first investigated in vitro using three HNSCC cell lines subjected to various pronecrotic stimuli (external irradiation, serum starvation, hypoxia and oxidative stress). TLR3 agonists were also investigated in necrotic tumor fluids from five oral cancer patients and three mouse tumor grafts. The release of biomolecules activating TLR3 was demonstrated for all three HNSCC cell lines. External irradiation was the most consistently efficient stimulus, and corresponding TLR3 agonists were conveyed in extracellular vesicles. TLR3-stimulating activity was detected in the fluids from all five patients and three mouse tumor grafts. In most cases, this activity was greatly reduced by RNAse pretreatment or TLR3 blocking antibodies. Our data indicate that TLR3 agonists are consistently present in necrotic fluids from HNSCC cells and mainly made of dsRNA fragments. These endogenous agonists may induce TLR3, which might lead to a protumorigenic effect. Regarding methodological aspects, our study demonstrates that direct investigations-including functional testing-can be performed on necrotic fluids from patient tumors.


Assuntos
Neoplasias de Cabeça e Pescoço , Receptor 3 Toll-Like , Animais , Humanos , Camundongos , Necrose/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço , Receptor 3 Toll-Like/metabolismo , Receptor Toll-Like 9 , Receptores Toll-Like , Microambiente Tumoral
5.
Int J Mol Sci ; 24(17)2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37686388

RESUMO

The aim of this study was to evaluate selected parameters of redox signaling and inflammation in the granulocytes of COVID-19 patients who recovered and those who died. Upon admission, the patients did not differ in terms of any relevant clinical parameter apart from the percentage of granulocytes, which was 6% higher on average in those patients who died. Granulocytes were isolated from the blood of 15 healthy people and survivors and 15 patients who died within a week, and who were selected post hoc for analysis according to their matching gender and age. They differed only in the lethal outcome, which could not be predicted upon arrival at the hospital. The proteins level (respective ELISA), antioxidant activity (spectrophotometry), and lipid mediators (UPUPLC-MS) were measured in the peripheral blood granulocytes obtained via gradient centrifugation. The levels of Nrf2, HO-1, NFκB, and IL-6 were higher in the granulocytes of COVID-19 patients who died within a week, while the activity of cytoplasmic Cu,Zn-SOD and mitochondrial Mn-SOD and IL-2/IL-10 were lower in comparison to the levels observed in survivors. Furthermore, in the granulocytes of those patients who died, an increase in pro-inflammatory eicosanoids (PGE2 and TXB2), together with elevated cannabinoid receptors 1 and 2 (associated with a decrease in the anti-inflammatory 15d-PGJ2), were found. Hence, this study suggests that by triggering transcription factors, granulocytes activate inflammatory and redox signaling, leading to the production of pro-inflammatory eicosanoids while reducing cellular antioxidant capacity through SOD, thus expressing an altered response to COVID-19, which may result in the onset of systemic oxidative stress, ARDS, and the death of the patient.


Assuntos
Antioxidantes , COVID-19 , Humanos , Granulócitos , Estresse Oxidativo , Centrifugação
6.
Acta Clin Croat ; 62(Suppl1): 91-98, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38746620

RESUMO

Velopharyngeal insufficiency is a disorder where the soft palate directs the air through the nose. It is often present in patients with previous cleft or short palate, but also in many other conditions. Symptoms are primarily to be found in speech, with very distinct nasal sound. After clinical evaluation and nasal endoscopy, surgery is considered. Several surgical techniques are in use, with posterior pharyngeal flap pharyngoplasty being most widely used. This method leaves the base of the posterior pharyngeal flap attached to the posterior pharyngeal wall, with two lateral ports on each side of the flap. Permanent nasopharyngeal obstruction is a very challenging pathology for anesthesiologists in case of mandatory nasal intubation since it is a relative contraindication for nasal intubation. Patients with previous palatoplasty will regularly appear in our routine anesthetic practice, in all surgical segments. The high risk of damage to the flap with possible bleeding can put the anesthesiologist in a very unpleasant situation if not aware of the permanent effect of this surgery. During preanesthetic assessment, if there is information on a previous pharyngoplasty, one should consider alternative options for nasotracheal intubation. All nasal insertion procedures must be either avoided or carried out with great caution, under fiberoptic visual control.


Assuntos
Contraindicações de Procedimentos , Intubação Intratraqueal , Retalhos Cirúrgicos , Insuficiência Velofaríngea , Humanos , Insuficiência Velofaríngea/cirurgia , Insuficiência Velofaríngea/etiologia , Intubação Intratraqueal/métodos , Faringe/cirurgia
7.
Int J Mol Sci ; 23(19)2022 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-36233111

RESUMO

As a result of SARS-CoV-2 infection, inflammation develops, which promotes oxidative stress, leading to modification of phospholipid metabolism. Therefore, the aim of this study is to compare the effects of COVID-19 on the levels of phospholipid and free polyunsaturated fatty acids (PUFAs) and their metabolites produced in response to reactions with reactive oxygen species (ROS) and enzymes (cyclooxygenases-(COXs) and lipoxygenase-(LOX)) in the plasma of patients who either recovered or passed away within a week of hospitalization. In the plasma of COVID-19 patients, especially of the survivors, the actions of ROS and phospholipase A2 (PLA2) cause a decrease in phospholipid fatty acids level and an increase in free fatty acids (especially arachidonic acid) despite increased COXs and LOX activity. This is accompanied by an increased level in lipid peroxidation products (malondialdehyde and 8-isoprostaglandin F2α) and lipid mediators generated by enzymes. There is also an increase in eicosanoids, both pro-inflammatory as follows: thromboxane B2 and prostaglandin E2, and anti-inflammatory as follows: 15-deoxy-Δ-12,14-prostaglandin J2 and 12-hydroxyeicosatetraenoic acid, as well as endocannabinoids (anandamide-(AEA) and 2-arachidonylglycerol-(2-AG)) observed in the plasma of patients who recovered. Moreover, the expression of tumor necrosis factor α and interleukins (IL-6 and IL-10) is increased in patients who recovered. However, in the group of patients who died, elevated levels of N-oleoylethanolamine and N-palmitoylethanolamine are found. Since lipid mediators may have different functions depending on the onset of pathophysiological processes, a stronger pro-inflammatory response in patients who have recovered may be the result of the defensive response to SARS-CoV-2 in survivors associated with specific changes in the phospholipid metabolism, which could also be considered a prognostic factor.


Assuntos
COVID-19 , Endocanabinoides , Ácidos Araquidônicos/metabolismo , Dinoprostona/metabolismo , Eicosanoides/metabolismo , Endocanabinoides/metabolismo , Ácidos Graxos não Esterificados , Hospitalização , Hospitais , Humanos , Ácidos Hidroxieicosatetraenoicos , Interleucina-10/metabolismo , Interleucina-6/metabolismo , Peroxidação de Lipídeos , Lipoxigenase/metabolismo , Malondialdeído , Fosfolipases A2/metabolismo , Fosfolipídeos/metabolismo , Prostaglandina-Endoperóxido Sintases/metabolismo , Espécies Reativas de Oxigênio/metabolismo , SARS-CoV-2 , Sobreviventes , Tromboxano B2 , Fator de Necrose Tumoral alfa/metabolismo
8.
Molecules ; 27(16)2022 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-36014561

RESUMO

Several studies suggested the association of COVID-19 with systemic oxidative stress, in particular with lipid peroxidation and vascular stress. Therefore, this study aimed to evaluate the antioxidant signaling in the plasma of eighty-eight patients upon admission to the Clinical Hospital Dubrava in Zagreb, of which twenty-two died within a week, while the other recovered. The differences between the deceased and the survivors were found, especially in the reduction of superoxide dismutases (SOD-1 and SOD-2) activity, which was accompanied by the alteration in glutathione-dependent system and the intensification of the thioredoxin-dependent system. Reduced levels of non-enzymatic antioxidants, especially tocopherol, were also observed, which correlated with enhanced lipid peroxidation (determined by 4-hydroxynonenal (4-HNE) and neuroprostane levels) and oxidative modifications of proteins assessed as 4-HNE-protein adducts and carbonyl groups. These findings confirm the onset of systemic oxidative stress in patients with severe SARS-CoV-2, especially those who died from COVID-19, as manifested by strongly reduced tocopherol level and SOD activity associated with lipid peroxidation. Therefore, we propose that preventive and/or supplementary use of antioxidants, especially of lipophilic nature, could be beneficial for the treatment of COVID-19 patients.


Assuntos
Antioxidantes , COVID-19 , Antioxidantes/metabolismo , Glutationa/metabolismo , Humanos , Peroxidação de Lipídeos , Estresse Oxidativo , SARS-CoV-2 , Superóxido Dismutase/metabolismo , Tocoferóis
9.
Psychiatr Danub ; 33(Suppl 13): 255-259, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-35150493

RESUMO

BACKGROUND: This study aimed to examine the results of Acceptance of Cosmetic Surgery Scale among the Croatian population and its correlations with other scales and demographic data. SUBJECT AND METHODS: The sample consisted of 420 people who voluntarily filled out an online questionnaire. They completed demographic questions and four scales: Acceptance of Cosmetic Surgery Scale (ACSS), Rosenberg Self-Esteem Scale (RSES), Satisfaction With Life Scale (SWLS), and Body Appreciation Scale-2 (BAS-2). RESULTS: ACSS scale showed five statistically significant differences between genders and a higher overall score in women, but no significant differences were recorded in three ACSS subscales and the overall ACSS score. In contrast to men, women respondents recorded a significant negative correlation between ACSS subscales score (Social, Consider) and BAS-2 and Satisfaction with life score, while a positive correlation was recorded with BMI. CONCLUSION: The ACSS score among the Croatian population was higher than the results among the Italian and Serbian population, and similar to the original American study, which tells us that the Croatian population accepts and considers cosmetic surgery a lot. Furthermore, our results are important for practitioners and patients because they revealed correlations between ACSS scores and the self-thinking scale.


Assuntos
Cirurgia Plástica , Imagem Corporal , Feminino , Humanos , Itália , Masculino , Satisfação Pessoal , Autoimagem , Inquéritos e Questionários
10.
Croat Med J ; 61(3): 271-275, 2020 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-32643344

RESUMO

Ameloblastic carcinoma (AC) is a rare and aggressive malignant epithelial odontogenic tumor, most commonly located in the mandible or maxilla. An extremely rare extragnathic localization of AC with no connection to the jaws, ectopic ameloblastic carcinoma (EAC), has so far been described only three times. This report presents a 64-year-old male with skull base ameloblastic carcinoma and offers a review of diagnostic and treatment challenges related to EAC. Because of its rarity and histological similarity to other tumors, EAC is often misdiagnosed. This is why we established a pathohistological and immunohistochemical profile of EAC that differentiates it from histologically similar tumors. The most frequently used EAC treatment is radical surgical resection, but the majority of reviewed reports described local recurrence. Taking into consideration new scientific discoveries on the molecular pathogenesis of ameloblastoma, we are the first to have performed BRAF mutation analysis in an EAC patient. BRAF inhibitors offer promising results in the treatment of BRAF-positive ameloblastomas and should continue to be researched in AC and EAC patients. Finally, EAC should be considered in differential diagnosis of head and neck tumors outside the jaws.


Assuntos
Ameloblastoma/diagnóstico por imagem , Coristoma/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico , Tumores Odontogênicos/diagnóstico por imagem , Neoplasias dos Seios Paranasais , Ameloblastoma/genética , Ameloblastoma/cirurgia , Coristoma/genética , Coristoma/cirurgia , Análise Mutacional de DNA , Evolução Fatal , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Cavidade Nasal , Tumores Odontogênicos/genética , Tumores Odontogênicos/cirurgia , Reação em Cadeia da Polimerase , Proteínas Proto-Oncogênicas B-raf/genética , Tomografia Computadorizada por Raios X
11.
Dent Traumatol ; 36(3): 241-246, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31863620

RESUMO

BACKGROUND/AIMS: Management of maxillofacial trauma in the geriatric population poses a great challenge due to anatomical variations and medical comorbidities. The aim of this study was to analyze the management variables, timing, and outcomes of facial fractures in elderly patients (aged 70 years or more) at several European departments of oral and maxillofacial surgery. MATERIALS AND METHODS: This study was based on a systematic computer-assisted database that allowed the recording of data from all geriatric patients with facial fractures from the involved maxillofacial surgical units across Europe between 2013 and 2017. RESULTS: A total of 1334 patients were included in the study: 665 patients underwent closed or open surgical treatment. A significant association (P < .005) was found between the presence of concomitant injuries and a prolonged time between hospital admission and treatment. The absence of indications to treatment was associated with comorbidities and an older age (P < .000005). CONCLUSIONS: Elderly patients require specific attention and multidisciplinary collaboration in the diagnosis and sequencing of trauma treatment. A prudent attitude may be kept in selected cases, especially when severe comorbidities are associated and function is not impaired.


Assuntos
Traumatismos Maxilofaciais/epidemiologia , Fraturas Cranianas/epidemiologia , Idoso , Humanos
12.
J Oral Maxillofac Surg ; 77(4): 791.e1-791.e7, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30677410

RESUMO

PURPOSE: The aim of this study was to analyze the demographic variables and causes and characteristics of mandibular angle fractures managed at several European departments of maxillofacial surgery. MATERIALS AND METHODS: This study was based on a multicenter systematic database that allowed the recording of data from all patients with mandibular angle fractures between January 1, 2013, and December 31, 2017. The following data were recorded: gender, age, etiology, side of angle fracture, associated mandibular fractures, presence of third molar, intermaxillary fixation, and osteosynthesis. RESULTS: The study included 1,162 patients (1,045 male and 117 female patients). A significant association was found between the presence of a third molar and the diagnosis of an isolated angle fracture (P < .0000005). Furthermore, assaults were associated with the presence of voluptuary habits (P < .00005), a younger mean age (P < .00000005), male gender (P < .00000005), and left-sided angle fractures (P < .00000005). CONCLUSIONS: Assaults and falls actually represent the most frequent causes of angle fractures. The presence of a third molar may let the force completely disperse during the determination of the angle fracture, finding a point of weakness.


Assuntos
Acidentes por Quedas , Fraturas Mandibulares/epidemiologia , Abuso Físico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Europa (Continente) , Feminino , Fixação Interna de Fraturas , Hábitos , Humanos , Masculino , Mandíbula , Fraturas Mandibulares/etiologia , Pessoa de Meia-Idade , Dente Serotino , Estudos Retrospectivos , Adulto Jovem
13.
J Clin Med ; 12(16)2023 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-37629355

RESUMO

Significant advances in reconstructive head and neck surgery with free microvascular flaps have had a positive impact on esthetic outcomes and quality of life. However, complications still occur in some patients. This study investigated the influence of the Hemoglobin, Albumin, Lymphocyte, and Platelet Score (HALP score), an immunonutritive marker, on complications and flap success. The retrospective analysis included 194 patients who underwent reconstruction of head and neck defects with free microvascular flaps. The HALP score correlated strongly with overall complications, including flap necrosis, infection, fistula, and hematoma. Hemoglobin, albumin, lymphocytes, and platelets individually showed associations with specific complications. HALP score was an extremely strong predictor of complications (AUC = 0.85). HALP score may be valuable for assessing patient status and predicting complications in microvascular free-flap reconstruction to allow timely interventions and improve outcomes. Further research is needed to investigate additional predictors and improve postoperative care.

14.
Dent J (Basel) ; 11(2)2023 Feb 08.
Artigo em Inglês | MEDLINE | ID: mdl-36826187

RESUMO

In our retrospective longitudinal study based on the data from 292 patients, we wanted to investigate whether there was an association between weather conditions and the occurrence of odontogenic abscesses (OA) requiring hospitalization. In the adult group (249 patients), the incidence of severe OA was highest in winter (32.9%) during January (11.6%), with the most common localizations being the perimandibular (35.7%) and submandibular (23.3%) regions. We found that changes in mean daily atmospheric pressure five days before hospitalization showed a positive association with the occurrence of OA, especially pressure variations greater than 12 hPa. Atmospheric pressure changes two and five days before hospitalization were also found to be moderate predictors of complications during treatment. Antibiogram analysis revealed resistance of streptococci to clindamycin in 26.3%. In the pediatric group, OA were also most frequent in winter (30.2%), and the perimandibular region (37.2%) and the canine fossa (20.9%) were the most frequent abscess localizations, while an association with meteorological parameters was not demonstrated. Clinical experience teaches us that weather change influences the occurrence of severe OA requiring hospitalization, which we confirmed in this research. To our knowledge, our study is the first to provide a threshold and precise time frame for atmospheric pressure changes.

15.
J Craniomaxillofac Surg ; 51(12): 755-759, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37704506

RESUMO

The vastus lateralis muscle is one of the four muscles that make up the quadriceps femoris muscle, and it is also the largest of them. Some studies have shown that patients experience lower quality of life and muscle weakness after surgical treatment of thigh muscles in order to perform reconstructive surgery of the head and neck. The aim of our study was to assess the quantitative and qualitative function of the lower extremities using an isokinetic dynamometer and a validated questionnaire on subjective difficulties in patients who underwent reconstructive surgery with the vastus lateralis free flap. Fourteen participants aged 20-70 years who suffered from malignant tumor in the head and neck region. The free vastus lateralis flap was used for reconstruction. All patients underwent isokinetic dynamometric measurement with the isokinetic dynamometer to test the isokinetic functions of the thigh muscles after surgery. In addition, subjective assessment of the lower extremities was performed using the validated questionnaire Lower Extremity Functional Scale. All isometric dynamometer measurements of the donor leg were compared with those of the unoperated leg. Peak torque and average power were significantly lower in the operated leg compared with the unoperated leg after 60°/s extension (p = 0.018 for peak torque, p = 0.021 for average power) and 180°/s extension (p = 0.019 for peak torque, p = 0.015 for average power). On the other hand, there was no statistically significant difference in dynamometer measurements after 60°/s flexion (p = 0.700 for peak torque, p = 0.854 for average power, and 180°/s flexion (p = 0.634 for peak torque, p = 0.571 for average power). The median value for the LEFS was 65.5 (40.00-71.25). The results of this study showed that there is a significant deterioration regarding the biophysical properties of the operated leg after harvesting vastus lateralis free flap.


Assuntos
Perna (Membro) , Qualidade de Vida , Humanos , Perna (Membro)/fisiologia , Retalhos Cirúrgicos , Músculo Esquelético , Coxa da Perna , Torque
16.
Head Neck ; 44(12): 2668-2677, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36325600

RESUMO

BACKGROUND: The purpose of this study was to investigate the expression of nuclear EGFR (nEGFR) and the stem cell marker ABCG2 in oral leukoplakia (OL) and oral erythroplakia (OE) and to assess their significance as prognostic biomarkers for malignant transformation. METHODS: In this study we included 50 patients with oral potentially malignant disorders (OPMD), 31 with OL and 19 with OE, in whom we examined the expression of nEGFR and ABCG2 by immunohistochemical methods. RESULTS: Twenty-one (42%) of 50 patients with OL and OE developed oral squamous cell carcinoma (OSCC). The malignant transformation was increased 12,84-fold (95% CI, 2.15-76.44, p = 0.005) in OPMD expressing both ABCG2 and nEGFR. Expression of nEGFR is a strong indicator of malignant transformation, unlike ABCG2 expression, respectively. CONCLUSIONS: Determining the co-expression of the biomarkers nEGFR and ABCG2 in OPMD may serve us to determine the risk of malignant transformation in OSCC.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Doenças da Boca , Neoplasias Bucais , Lesões Pré-Cancerosas , Humanos , Neoplasias Bucais/patologia , Carcinoma de Células Escamosas/patologia , Leucoplasia Oral/patologia , Transformação Celular Neoplásica/patologia , Receptores ErbB/metabolismo , Carcinoma de Células Escamosas de Cabeça e Pescoço , Biomarcadores , Membro 2 da Subfamília G de Transportadores de Cassetes de Ligação de ATP/genética , Proteínas de Neoplasias/metabolismo
17.
Acta Stomatol Croat ; 56(3): 311-317, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36382211

RESUMO

Diagnosing child abuse still poses a challenge for healthcare professionals. We will present a case in which a physically and emotionally abused four-year-old boy had an undiagnosed lower jaw fracture for almost eight months. The child first presented with a peri-mandibular swelling and was treated with antibiotics prescribed by his doctor of dental medicine. After not having responded to antibiotic treatment, the boy was referred to the Department of Oral and Maxillofacial Surgery, accompanied by his birth mother. The deciduous mandibular molars with deep cavities were extracted since we thought that they were the reason for swelling. After several visits with his foster mother, the child was finally diagnosed with a lower jaw fracture and a psychosomatic disorder. Physical abuse by his birth parents was later on confirmed, and the consequences were insufficient growth, non-perception of pain and reduced speech development. After having been with his foster mother for almost a year, the child learned to complain when he was in pain. This report emphasizes the importance of taking a detailed medical history along with a thorough clinical examination.

18.
Biomolecules ; 12(10)2022 10 15.
Artigo em Inglês | MEDLINE | ID: mdl-36291697

RESUMO

Thorough understanding of metabolic changes, including lipidome alteration, associated with the development of COVID-19 appears to be crucial, as new types of coronaviruses are still reported. In this study, we analyzed the differences in the plasma phospholipid profiles of the deceased COVID-19 patients, those who recovered and healthy people. Due to identified abnormalities in plasma phospholipid profiles, deceased patients were further divided into two subgroups (D1 and D2). Increased levels of phosphatidylethanolamines (PE), phosphatidylcholines (PC) and phosphatidylserines (PS) were found in the plasma of recovered patients and the majority of deceased patients (first subgroup D1) compared to the control group. However, abundances of all relevant PE, PC and PS species decreased dramatically in the plasma of the second subgroup (D2) of five deceased patients. These patients also had significantly decreased plasma COX-2 activity when compared to the control, in contrast to unchanged and increased COX-2 activity in the plasma of the other deceased patients and recovered patients, respectively. Moreover, these five deceased patients were characterized by abnormally low CRP levels and tremendous increase in LDH levels, which may be the result of other pathophysiological disorders, including disorders of the immune system, liver damage and haemolytic anemia. In addition, an observed trend to decrease the autoantibodies against oxidative modifications of low-density lipoprotein (oLAb) titer in all, especially in deceased patients, indicate systemic oxidative stress and altered immune system that may have prognostic value in COVID-19.


Assuntos
COVID-19 , Fosfolipídeos , Humanos , Fosfolipídeos/metabolismo , Fosfatidiletanolaminas/metabolismo , Lipidômica , Fosfatidilserinas/metabolismo , Ciclo-Oxigenase 2 , Fosfatidilcolinas , Lipoproteínas LDL , Autoanticorpos
19.
Diagnostics (Basel) ; 12(9)2022 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-36140471

RESUMO

BACKGROUND: Superinfections contribute to mortality and length of stay in critically ill COVID-19 patients. The aim of this study was to determine the incidence and pathogen distribution of bacterial and fungal superinfections of the lower respiratory tract (LRTI), urinary tract (UTI) and bloodstream (BSI) and to determine the predictive value of biomarkers of inflammatory response on their ICU survival rates. METHODS: A retrospective observational study that included critically ill COVID-19 patients treated during an 11-month period in a Croatian national COVID-19 hospital was performed. Clinical and diagnostic data were analyzed according to the origin of superinfection, and multivariate regression analysis was performed to determine the predictive values of biomarkers of inflammation on their survival rates. RESULTS: 55.3% critically ill COVID-19 patients developed bacterial or fungal superinfections, and LRTI were most common, followed by BSI and UTI. Multidrug-resistant pathogens were the most common causes of LRTI and BSI, while Enterococcus faecalis was the most common pathogen causing UTI. Serum ferritin and neutrophil count were associated with decreased chances of survival in patients with LRTI, and patients with multidrug-resistant isolates had significantly higher mortality rates, coupled with longer ICU stays. CONCLUSION: The incidence of superinfections in critically ill COVID-19 patients was 55.3%, and multidrug-resistant pathogens were dominant. Elevated ferritin levels and neutrophilia at ICU admission were associated with increased ICU mortality in patients with positive LRTI.

20.
Oral Maxillofac Surg ; 26(3): 383-392, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34499265

RESUMO

BACKGROUND/AIMS: When facial trauma involves elderly patients, the possible presence of frailty and comorbidities in victims of trauma may worsen the posttraumatic symptoms and decrease quality of life. The aim of this multicenter study was to assess the quality of life following surgical or non-operative management of maxillofacial trauma in elderly patients. MATERIALS AND METHODS: This cohort study was based on the administration of validated self-administered questionnaires to all the geriatric patients (70 years or more) with facial fractures from the involved maxillofacial surgical units across Europe, since 1st January 2019 to 31st June 2019. The following questionnaires were administered: SF36 questionnaire; the VFQ-25 questionnaire; the Oral Health Impact Profile - 14 (OHIP14). Outcome variables were VFQ-25 and OHIP-14 results. RESULTS: A total of 37 patients (14 male and 23 female patients) met the inclusion criteria and were included in the study. Elderly patients had an improvement in almost all the categories examined by the SF-36 questionnaire 6 months after trauma, with the only exception of a worsening as for role limitations due to physical health. An improvement was observed in almost all the categories at SF-36 test. A worsening of scores of OHIP-14 for all the considered dimensions in the whole study population was observed too. CONCLUSIONS: Elderly patients following facial trauma experience significant emotional, social, and functional disturbances. We observed that emotional problems, energy/fatigue, social functioning, and generally social limitations played a great role in the decrease of QoL in elderly patients following maxillofacial trauma.


Assuntos
Traumatismos Maxilofaciais , Fraturas Cranianas , Idoso , Estudos de Coortes , Feminino , Humanos , Masculino , Traumatismos Maxilofaciais/epidemiologia , Traumatismos Maxilofaciais/cirurgia , Estudos Prospectivos , Qualidade de Vida , Fraturas Cranianas/cirurgia
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