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This narrative review aims to describe the current status of contrast-enhanced ultrasound (CEUS) in characterizing renal cystic lesion. The imaging techniques usually performed for their evaluation are ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI) with different criteria of application based on the individual case and the purpose of the examination. Generally, US, as a non-ionizing examination, is the first imaging modality performed and therefore the one that incidentally detects cystic lesions. CT is the most performed imaging modality for cystic lesion assessment before MRI evaluation. It provides better characterization and management and has been introduced into the Bosniak classification. In this context, CEUS is making its way for its characteristics and represents the emerging technique in this field. With these premises, the authors analyze the role of CEUS in the evaluation of renal cysts, starting with an explanation of the technique, describe its main advantages and limitations, and end with a discussion of its application in the Bosniak classification and management, following the current major guidelines.
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ABSTRACT: A 66-year-old man has been treated in a psychiatric department for 4-5 years for a depressive syndrome, which is associated with poor motor initiative, confusional state, and dysosmia. Dynamic 18 F-FET PET/CT showed only faint uptake of radiotracer just above the background on the left frontal calcific lesion. The time-activity curve of the neoplasms showed a descending pattern. After a left fronto-orbitary minicraniotomy surgery, histology examination concluded for a rare calcifying pseudoneoplasm of the neuraxis (CAPNON). To our knowledge, no data are available on the metabolic behavior of CAPNON in 18 F-FET PET/CT. This case highlighted that a faint uptake and descending pattern on dynamic 18 F-FET PET/CT may be helpful in suspected CAPNON before surgery.
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Calcinosis , Tomografía Computarizada por Tomografía de Emisión de Positrones , Humanos , Masculino , Anciano , Calcinosis/diagnóstico por imagen , Tomografía Computarizada por Rayos XRESUMEN
Objectives: To evaluate perioperative and functional outcomes of clampless laparoscopic tumor enucleation for completely endophytic renal tumors with the guide of intraoperative ultrasonography. Methods: We analyzed patients with clinically completely endophytic tumors, renal tumors, who underwent clampless three-dimensional (3D) retroperitoneoscopic laparoscopic tumor enucleation between January 2012 and January 2021. Patients with exophytic tumors were excluded. Intraoperative ultrasonography was used to map out the mass in all surgeries. Results: Overall, 57 patients underwent clampless 3D retroperitoneoscopic laparoscopic tumor enucleation. Mean surgical time was 131 minutes, and mean estimated blood loss was 202 mL. Mean hospital stay was 4.7 days. Major and minor postoperative complications occurred, respectively, in 3 and 10 cases. Only a patient had a positive surgical margin. One-year renal function did not differ from baseline. Conclusion: Our study showed that clampless laparoscopic enucleation guided by laparoscopic ultrasonography ensured satisfactory outcomes for completely intrarenal tumors, with excellent renal function preservation 1 year after surgery.
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Neoplasias Renales , Laparoscopía , Humanos , Neoplasias Renales/diagnóstico por imagen , Neoplasias Renales/patología , Neoplasias Renales/cirugía , Laparoscopía/métodos , Nefrectomía/métodos , Estudios Retrospectivos , Resultado del Tratamiento , UltrasonografíaRESUMEN
Objective: To demonstrate the safety of clampless 3D laparoscopic tumor enucleation (cLTE) for exophytic T1b kidney masses, avoiding suture to achieve hemostasis. Methods: Between January 2010 and January 2021, 241 consecutive patients with an exophytic renal tumor underwent sutureless cLTE. Patients with predominantly endophytic growth or tumors 4 mm closer to the collecting system less were excluded. In all cases, an attempt was made to accomplish surgery without suturing kidney parenchyma. Data were obtained from a retrospective review of history and physical examinations, operative and pathology reports, anesthesia records during the hospital stay, and follow-up visits. Results: Among 241 patients who underwent cLTE, 148 had cT1a and 93 had cT1b renal tumor. The median tumor size was 32 mm, and the median R.E.N.A.L. (radius exophytic/endophytic nearness anterior/posterior location) score was 6. Renorrhaphy was necessary in 5 cases. The median operative time (OT) was 100 minutes, and the estimated blood loss (EBL) was 150 mL. The median 24-hour decrease in hemoglobin was 1.8 g/dL. The median length of stay was 4 days. Nineteen patients had postoperative complications: 3 cases had Clavien-Dindo (CD) 3a or more, 6 had CD2, and 10 had CD1. Comparing the T1a and T1b groups, except for the median OT and the EBL, no significant differences were observed in all the other variables analyzed. In both groups, renal function was preserved after 1 year from surgery. Conclusion: Our experience showed that sutureless cLTE is safe and feasible for T1b tumors leading to radical oncological outcomes and preserving renal function.
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Carcinoma de Células Renales , Neoplasias Renales , Laparoscopía , Carcinoma de Células Renales/cirugía , Humanos , Neoplasias Renales/patología , Neoplasias Renales/cirugía , Nefrectomía , Estudios Retrospectivos , Resultado del Tratamiento , Procedimientos Quirúrgicos UrológicosRESUMEN
Recognition and capture of amyloid beta (Aß) is a challenging task for the early diagnosis of neurodegenerative disorders, such as Alzheimer's disease. Here, we report a novel KLVFF-modified nanomagnet based on magnetic nanoparticles (MNP) covered with a non-ionic amphiphilic ß-cyclodextrin (SC16OH) and decorated with KLVFF oligopeptide for the self-recognition of the homologous amino-acids sequence of Aß to collect Aß (1-42) peptide from aqueous samples. MNP@SC16OH and MNP@SC16OH/Ada-Pep nanoassemblies were fully characterized by complementary techniques both as solid powders and in aqueous dispersions. Single domain MNP@SC16OH/Ada-Pep nanomagnets of 20-40 nm were observed by TEM analysis. DLS and ζ-potential measurements revealed that MNP@SC16OH nanoassemblies owned in aqueous dispersion a hydrodynamic radius of about 150 nm, which was unaffected by Ada-Pep decoration, while the negative ζ-potential of MNP@SC16OH (-40 mV) became less negative (-30 mV) in MNP@SC16OH/Ada-Pep, confirming the exposition of positively charged KLVFF on nanomagnets surface. The ability of MNP@SC16OH/Ada-Pep to recruit Aß (1-42) in aqueous solution was evaluated by MALDI-TOF and compared with the ineffectiveness of undecorated MNP@SC16OH and VFLKF scrambled peptide-decorated nanoassemblies (MNP@SC16OH/Ada-scPep), pointing out the selectivity of KLVFF-decorated nanohybrid towards Aß (1-42). Finally, the property of nanomagnets to extract Aß in conditioned medium of cells over-producing Aß peptides was investigated as proof of concept of effectiveness of these nanomaterials as potential diagnostic tools.
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Péptidos beta-Amiloides , Ciclodextrinas , Oligopéptidos , Fragmentos de PéptidosRESUMEN
OBJECTIVES: To analyze the feasibility, safety and advantages of Laparo-Endoscopic Single-site Surgery radical prostatectomy (LESS-RP) based on our personal experience. PATIENTS AND METHODS: Details of 520 patients were retrospectively analyzed, from 2009 to 2019. Extraperitoneal approach, with only two accesses (2.5 cm and 5 mm respectively) was used to perform radical prostatectomy. Perioperative characteristics and postoperative oncologic and functional outcomes are reported. RESULTS: The mean age was 66.6 ± 5.6 years. Mean PSA level was 9 ± 3.5 ng/ml. According to D'Amico classification, the percentage of patients with low-, intermediate-, and high-risk disease cases were 116 (22.4%), 275 (52.8%), and 129 (24.8%) respectively. Mean operative time was 156 ± 43 min. Mean estimated blood loss was 214 ± 93 ml. Positive surgical margins (PSMs) were detected in 110 (21.2%) patients. PSM rates in pT2 and pT3 stages were 20.1% and 22.9%, respectively. The overall complication rate was 9.2%, based on the modified Clavien classification. The 12 months continence and potency rates were 90.9% and 49.1%, respectively. The biochemical recurrence rate was 6.8%, at the median follow-up time of 26.7 months (IQR 12-32). CONCLUSIONS: Our analyses show that LESS-RP is a safe procedure, if performed by surgeons with adequate experience and skills. Unlike the classic laparoscopic prostatectomy, this technique allows better aesthetic and psychological results, reduced postoperative pain, and a faster return to normal daily activity with the same functional and oncological results.
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Laparoscopía , Neoplasias de la Próstata , Anciano , Humanos , Masculino , Persona de Mediana Edad , Prostatectomía , Neoplasias de la Próstata/cirugía , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
Ready-to-eat pomegranate arils are considered a "functional food" for their health benefits and have desirable sensory characteristics, which have caused an increasing interest by the consumers for this product. The preparation process of ready-to-eat fruit products can cause severe injuries and worsen their quality and shelf life significantly. Modified atmosphere packaging (MAP) has been used broadly in the last years to maintain the quality of processed fruits and showed optimal results, in spite of the possible problems caused by the depletion of O2 and corresponding accumulation of CO2 in the package. This study was conducted to evaluate the effects of different MAP treatments, based on nitrogen or alternatively on a noble gas, argon, in combination with refrigerated storage (0, 4, 8, 12, and 16 days at 4 ± 1 °C and 90 ± 5% RH) on the qualitative parameters of pomegranate arils with the aim to prolong their post-harvest life maintaining the original quality. The argon-based MAP treatment (MAPAr) was the one that provided the best results, assuring a limited loss of weight and juice content. The use of noble gas allowed to maintain a high sugar/acid ratio until 16 days from packaging. Sensory analysis on all MAP treated arils and, on the juice, obtained from them were carried out, and judges showed a preference for MAPAr treated arils and juice until day 12 from packaging.
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The control of temperature and gas composition is essential to maintain the fresh flavor and quality of perishable fruits like mulberry. This study presented a modified atmosphere experiment (MAP) for fresh fruit showing the potential benefits of innovative gas mixing with argon. The effects of MAP were studied on the physicochemical and qualitative attributes of mulberry preserved at 4 ± 1°C and 90 ± 5% R.H. Fresh mulberries were packaged with different gas combinations: MAP1 (4%O2+6%CO2+90%N2), MAP2 (10%O2+5%CO2+85%Ar), CTR1 (20.9%O2+0.04%CO2), and CTR2 (10%O2+5%CO2+85%N2). Changes in quality parameters were evaluated after 0, 4, 8, and 12 days of storage. Mulberries packaged with MAP had a lower weight loss than CTR samples which lost more than 80% of their initial weight. Furthermore, the results showed that the argon treatment was the best in keeping the fruit juice content, preserving its structure. Despite not showing great differences with MAP1 treatment, Ar allowed to maintain high TSS up to 8 storage days, slowed CO2 production. The sensory profile of mulberry fruit was not significantly affected by storage in modified atmospheres, and the production of potential unpleasant odors in MAP2 could not be perceived. The results of this study confirm that this innovative approach, using MAP technology, has a potential use in maintaining mulberry fruit quality for a longer time.
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We aimed to identify clinical, molecular and radiological correlates of activities of daily living (ADL) in patients with cerebellar atrophy caused by PMM2 mutations (PMM2-CDG), the most frequent congenital disorder of glycosylation. Twenty-six PMM2-CDG patients (12 males; mean age 13 ± 11.1 years) underwent a standardized assessment to measure ADL, ataxia (brief ataxia rating scale, BARS) and phenotype severity (Nijmegen CDG rating scale, NCRS). MRI biometry of the cerebellum and the brainstem were performed in 23 patients (11 males; aged 5 months-18 years) and 19 control subjects with equal gender and age distributions. The average total ADL score was 15.3 ± 8.5 (range 3-32 out of 36 indicating severe functional disability), representing variable functional outcome in PMM2-CDG patients. Total ADL scores were significantly correlated with NCRS (r2 = 0.55, p < 0.001) and BARS scores (r2 = 0.764; p < 0.001). Severe intellectual disability, peripheral neuropathy, and severe PMM2 variants were all significantly associated with worse functional outcome. Higher ADL scores were significantly associated with decreased diameters of cerebellar vermis (r2 = 0.347; p = 0.004), hemispheres (r2 = 0.436; p = 0.005), and brainstem, particularly the mid-pons (r2 = 0.64; p < 0.001) representing the major radiological predictor of functional disability score in multivariate regression analysis. We show that cerebellar syndrome severity, cognitive level, peripheral neuropathy, and genotype correlate with ADL used to quantify disease-related deficits in PMM2-CDG. Brainstem involvement should be regarded among functional outcome predictors in patients with cerebellar atrophy caused by PMM2-CDG.
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Actividades Cotidianas , Enfermedades Cerebelosas , Mutación , Fosfotransferasas (Fosfomutasas) , Atrofia , Trastornos Congénitos de Glicosilación , Humanos , Masculino , Fosfotransferasas (Fosfomutasas)/deficiencia , Fosfotransferasas (Fosfomutasas)/genéticaRESUMEN
BACKGROUND: Extent of tumor resection (EOTR) in glioblastoma surgery plays an important role in improving survival. OBJECTIVE: To analyze the efficacy, safety and reliability of fluid-attenuated inversion-recovery (FLAIR) magnetic resonance (MR) images used to guide glioblastoma resection (FLAIRectomy) and to volumetrically measure postoperative EOTR, which was correlated with clinical outcome and survival. METHODS: A total of 68 glioblastoma patients (29 males, mean age 65.8) were prospectively enrolled. Hyperintense areas on FLAIR images, surrounding gadolinium-enhancing tissue on T1-weighted MR images, were screened for signal changes suggesting tumor infiltration and evaluated for supramaximal resection. The surgical protocol included 5-aminolevulinic acid (5-ALA) fluorescence, neuromonitoring, and intraoperative imaging tools. 5-ALA fluorescence intensity was analyzed and matched with the different sites on navigated MR, both on postcontrast T1-weighted and FLAIR images. Volumetric evaluation of EOTR on T1-weighted and FLAIR sequences was compared. RESULTS: FLAIR MR volumetric evaluation documented larger tumor volume than that assessed on contrast-enhancing T1 MR (72.6 vs 54.9 cc); residual tumor was seen in 43 patients; postcontrast T1 MR volumetric analysis showed complete resection in 64 cases. O6-methylguanine-DNA methyltransferase promoter was methylated in 8/68 (11.7%) cases; wild type Isocytrate Dehydrogenase-1 (IDH-1) was found in 66/68 patients. Progression free survival and overall survival (PFS and OS) were 17.43 and 25.11 mo, respectively. Multiple regression analysis showed a significant correlation between EOTR based on FLAIR, PFS (R2 = 0.46), and OS (R2 = 0.68). CONCLUSION: EOTR based on FLAIR and 5-ALA fluorescence is feasible. Safety of resection relies on the use of neuromonitoring and intraoperative multimodal imaging tools. FLAIR-based EOTR appears to be a stronger survival predictor compared to gadolinium-enhancing, T1-based resection.
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Neoplasias Encefálicas , Glioblastoma , Anciano , Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/cirugía , Glioblastoma/diagnóstico por imagen , Glioblastoma/cirugía , Humanos , Imagen por Resonancia Magnética , Masculino , Estudios Prospectivos , Reproducibilidad de los ResultadosRESUMEN
In recent years, the market for minimally processed fruit has increased. Fresh-cut fruits are characterized by a short shelf life due to the processing phases that accelerate the ripening courses. The aim of this work is to analyze the effect on the quality of fresh-cut Hayward kiwis of three different edible coatings based on (1) Aloe vera gel, (2) Aloe vera gel + hydroxypropyl methylcellulose and (3) Aloe vera gel + lemon essential oil. Fruit firmness, weight loss, color, soluble solids content, titratable acidity, microbial load and sensory analysis were evaluated as fresh after 2, 4, 7 and 10 days. Aloe vera gel and Aloe vera gel + lemon essential oil maintained the best values, as they acted as a barrier to gas exchange and further reduced the microbial load. These results were confirmed by sensory analysis: Aloe vera gel + hydroxypropyl methylcellulose does not alter the natural taste of kiwi slices, Aloe vera gel + lemon essential oil gives the characteristic taste of lemon essential oil and Aloe vera gel gives an herbaceous taste. The Aloe vera gel, in combination with these additives, maintains the ability to preserve the quality of fresh-cut kiwifruit.
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Antibiotics represent essential drugs to contrast the insurgence of bacterial infections in humans and animals. Their extensive use in livestock farming, including aquaculture, has improved production performances and food safety. However, their overuse can implicate a risk of water pollution and related antimicrobial resistance. Consequently, innovative strategies for successfully removing antibiotic contaminants have to be advanced to protect human health. Among them, photodegradation TiO2-driven under solar irradiation appears not only as a promising method, but also a sustainable pathway. Hence, we evaluated several composite TiO2 powders with H2TCPP, CuTCPP, ZnTCPP, and SnT4 porphyrin for this scope in order to explore the effect of porphyrins sensitization on titanium dioxide. The synthesis was realized through a fully non-covalent functionalization in water at room conditions. The efficacy of obtained composite materials was also tested in photodegrading oxolinic acid and oxytetracycline in aqueous solution at micromolar concentrations. Under simulated solar irradiation, TiO2 functionalized with CuTCPP has shown encouraging results in the removal of oxytetracycline from water, by opening the way as new approaches to struggle against antibiotic's pollution and, finally, to represent a new valuable tool of public health.
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Antibacterianos/química , Farmacorresistencia Bacteriana , Fotólisis , Porfirinas/química , Gestión de Riesgos , Titanio/química , Agua/química , Adsorción , Ácido Oxolínico/química , Oxitetraciclina/química , Espectrofotometría UltravioletaRESUMEN
The hierarchical assembly, in aqueous solution, of a new multi-metalloporphyrin/calixarene aggregate has been accomplished. In this supramolecular system transfer of chirality, from the outermost components to the central porphyrin reporter, takes place as a result of favorable and fully noncovalent long-range electronic communication.
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Renal cell carcinoma with inferior cava thrombus indicates biologically aggressive cancer, so the complete surgical resection remains standard of care with best long-term outcomes. Laparoscopic radical nephrectomy with vena cava thrombectomy represents nowadays a mini-invasive surgical alternative to the classic open nephrectomy. We present the case of a patient with incidental diagnosis of a right renal mass with level II inferior cava thrombus completely managed with both retroperitoneal and transperitoneal approaches. The use of a double access was planned to ensure a safe and complete vascular control. In our opinion, optimal patient selection, extensive laparoscopic experience, and knowledge of both transperitoneal and retroperitoneal approaches are critical elements for the safe application of this technique, although this procedure remains challenging and technically demanding.
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Carcinoma de Células Renales/cirugía , Neoplasias Renales/cirugía , Laparoscopía , Células Neoplásicas Circulantes , Nefrectomía/métodos , Trombectomía , Vena Cava Inferior , Trombosis de la Vena/cirugía , Carcinoma de Células Renales/secundario , Humanos , Neoplasias Renales/patología , Masculino , Persona de Mediana Edad , Peritoneo , Espacio RetroperitonealRESUMEN
BACKGROUND: Brain tumor surgery is routinely supported by several intraoperative techniques, such as fluorescence, brain mapping and neuronavigation, which are often used independently. Efficacy of navigation is limited by the brain-shift phenomenon, particularly in cases of large or deep-sited lesions. Intraoperative imaging was introduced also to update neuronavigation data, to try and solve the brain-shift phenomenon-related pitfalls and increase overall safety. Nevertheless, each intraoperative imaging modality has some intrinsic limitations and technical shortcomings, making its clinical use challenging. We used a multimodal intraoperative imaging protocol to update neuronavigation, based on the combination of intraoperative Ultrasound (i-US) and intraoperative Computed Tomography (i-CT) integrated with 5-ALA fluorescence and neuromonitoring-guided resection. METHODS: This is a pilot study on 52 patients (29 men), including four children, with a mean age of 57.67 years, suffering from brain low- (10 patients) or high-grade (34 patients) glioma or metastasis (8 patients), prospectively and consecutively enrolled. They underwent 5-ALA fluorescence-guided microsurgical tumor resection and neuromonitoring was used in cases of lesions located in eloquent areas, according to pre-operative clinical and neuroradiological features. Navigated B-mode ultrasound acquisition was carried out after dural opening to identify the lesion. After tumor resection, i-US was used to identify residual tumor. Following further tumor resection or in cases of unclear US images, post-contrast i-CT was performed to detect and localize small tumor remnants and to allow further correction for brain shift. A final i-US check was performed to verify the completeness of resection. Clinical evaluation was based on comparison of pre- and post-operative Karnofsky Performance Score (KPS) and assessment of Overall Survival (OS) and Progression Free Survival (PFS). Extent of tumor resection (EOTR) was evaluated by volumetric post-operative Magnetic Resonance performed within 48 h after surgery. RESULTS: Forty-one of the 52 (78.8%) patients were alive and still under follow-up in December 2017. 5-ALA was strongly or vaguely positive in 45 cases (86.5%). Seven lesions (4 low-grade glioma, 1 high-grade glioma and 2 metastases) were not fluorescent. i-US visualized residual tumor after resection of all fluorescent or pathological tissue in 22 cases (42.3%). After i-US guided resection, i-CT documented the presence of further residual tumor in 11 cases (21.1%). Mean EOTR was 98.79% in the low-grade gliomas group, 99.84% in the high-grade gliomas group and 100% in the metastases group. KPS changed from 77.88, pre-operatively, to 72.5, post-operatively. At the last follow-up, mean KPS was 84.23. CONCLUSIONS: The combination of different intraoperative imaging modalities may increase brain tumor safety and extent of resection. In particular, i-US seems to be highly sensitive to detect residual tumors, but it may generate false positives due to artifacts. Conversely, i-CT is more specific to localize remnants, allowing a more reliable updating of navigation data.
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Epilepsia Refractaria/patología , Síndromes Epilépticos/patología , Convulsiones Febriles/patología , Adulto , Epilepsia Refractaria/diagnóstico por imagen , Epilepsia Refractaria/fisiopatología , Síndromes Epilépticos/diagnóstico por imagen , Síndromes Epilépticos/fisiopatología , Humanos , Imagen por Resonancia Magnética , Masculino , Convulsiones Febriles/diagnóstico por imagen , Convulsiones Febriles/fisiopatología , Estado Epiléptico/diagnóstico por imagen , Estado Epiléptico/patología , Estado Epiléptico/fisiopatologíaRESUMEN
Mango (Mangifera indica L.) quality is strongly influenced by genotype but individuating the most appropriate harvesting time is essential to obtain high quality fruits. In this trial we studied the influences of the ripening stage at harvest (mature-ripe or green-ripe) on quality of ready to eat mango fruits from nine cultivars (Carrie, Keitt, Glenn, Manzanillo, Maya, Rosa, Osteen, Tommy Atkins and Kensington Pride) grown in the Mediterranean subtropical climate through physicochemical, nutraceutical, and sensory analysis. Our results show a large variability among the different observed genotypes and in dependence of the ripening stage at harvest. With the exception of Rosa, mature-ripe fruits are well-colored, sweet and aromatic, and better suited for short supply chains. On the other hand, post-harvest ripened fruits are firmer, frequently (Carrie, Glenn, Keitt, Manzanillo, Maya) possess interesting nutraceutical value and, in the case of Glenn, Maya, Osteen, and Kensington Pride, they can reach market standard quality.
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Suplementos Dietéticos/análisis , Calidad de los Alimentos , Frutas/química , Mangifera/química , Adulto , Antioxidantes/análisis , Ácido Ascórbico/análisis , Carotenoides/análisis , Fenómenos Químicos , Color , Femenino , Análisis de los Alimentos , Humanos , Masculino , Región Mediterránea , Fenoles/análisis , Extractos Vegetales/análisis , Análisis de Componente Principal , Sicilia , Espectrometría de Masas en Tándem , GustoRESUMEN
Functionalized carbon nanotubes (CNTs) have been proposed in the last years as vectors for delivery of biomolecules, proteins and DNA into various cells. In this study, a new multiwalled carbon nanotube ß-cyclodextrin platform (MWCNT-CD) modified with branched polyethylenimine (PEI) and doped with Rhodamine (Rhod), MWCNT-CD-PEI-Rhod, was designed and investigated as drug delivery system. The drug binding abilities of MWCNT-CD-PEI-Rhod towards Cidofovir (Cid) and DNA plasmid encoding enhanced green fluorescence protein (pCMS-EGFP) were investigated by complementary spectroscopic techniques. MWCNT-CD-PEI-Rhod showed no significative cytotoxicity and an excellent ability to entrap and delivery Cid. The present study broadens the spectrum of biological evaluation by investigating platform-treatment induced cellular response such as antiviral activity, transfection properties, cellular uptake, internalization mechanisms and cellular localization. The mechanism of cellular uptake was elucidated monitoring the dependence of intracellular red fluorescence from the assembly concentration, time and presence of specific uptake inhibitors. The biological results indicated that MWCNT-CD-PEI-Rhod loaded with Cid and/or pCMS-EGFP crossed the cell membrane via clathrin-dependent pathway and co-localized in lysosomal compartment. However, no green fluorescent protein expression of pCMS-EGFP was detected, whereas the efficient escape of Cid from lysosome and the release close to nuclear region prompted the antiviral activity.
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Antivirales/farmacología , Citosina/análogos & derivados , Portadores de Fármacos , Nanotubos de Carbono/química , Organofosfonatos/farmacología , Polietileneimina/química , beta-Ciclodextrinas/química , Animales , Antivirales/química , Transporte Biológico , Chlorocebus aethiops , Cidofovir , Citomegalovirus/efectos de los fármacos , Citomegalovirus/crecimiento & desarrollo , Citosina/química , Citosina/farmacología , Liberación de Fármacos , Proteínas Fluorescentes Verdes/genética , Proteínas Fluorescentes Verdes/metabolismo , Cinética , Lisosomas/efectos de los fármacos , Lisosomas/metabolismo , Organofosfonatos/química , Plásmidos/química , Plásmidos/metabolismo , Rodaminas/química , Rodaminas/metabolismo , Células VeroRESUMEN
OBJECTIVES: Birt-Hogg-Dubé syndrome (BHDS) is a rare autosomal dominant characterized by the presence of fibrofolliculomas and/or trichodiscomas, pulmonary cysts, spontaneous pneumothorax, and renal tumors. The syndrome is linked to mutations in the FLCN gene, which is preferentially expressed in the skin, kidney, and lung. The aim of our paper is to describe a case of multiple bilateral renal cancer in a patient affected by BHDS. CASE PRESENTATION: Patient subjected to enucleoresection seven kidney tumors discovered right after ultrasound performed for other reasons. Definitive histologic examination were as follows: multifocal type chromophobe renal cell carcinoma and clear cell. After 1 month, the patient was readmitted for spontaneous pneumothorax. After about a year, the patient was again subjected to resection of multiple renal tumors left. Histological examination proved that it was multifocal renal cell carcinoma, clear cell varieties. The genome analysis highlighted positive for mutation c. 1379_1380 of FLCN gene, BHDS gene. Currently, the patient is under close follow-up. After 1 year, the chest computed tomography (CT) confirmed the presence of minute air bubbles scattered on both sides. Instead, the abdominal CT was positive for a small round lesion 6 mm exophytic. CONCLUSIONS: The BHDS is a rare syndrome whose management is extremely complex both in terms of oncological and functional. Kidney tumors associated with BHDS usually have a favorable clinical course. Present evidence suggests a close follow-up of the carriers of the genetic mutation patients whether or not they have expressed the lesions of disease given the high rate of recurrence of renal lesions.
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Síndrome de Birt-Hogg-Dubé/complicaciones , Carcinoma de Células Renales/etiología , Neoplasias Renales/etiología , Adulto , Humanos , MasculinoRESUMEN
The combination of conventional anticancer therapy with other treatment modalities such as photodynamic therapy (PDT) is paving the way to novel more effective treatment of solid tumors via light exposure. With this idea in mind, in this paper, nanoparticles (NPs) based on Heptakis (2-oligo(ethyleneoxide)-6-hexadecylthio-)-ß-CD (SC16OH) for dual delivery of Zinc-Phthalocyanine (ZnPc) and Docetaxel (DTX) were developed pointing to their potential application as nanomedicine for the combined photodynamic and chemo-therapy of solid tumors. NPs prepared by the emulsion-solvent evaporation technique displayed a hydrodynamic diameter of â 200nm, a negative zeta potential (â -27mV) and a satisfactory entrapment efficiency of both drugs at a specific mass ratio. On these bases, NPs containing DTX and ZnPc with theoretical loading of 5% and 0.2% respectively (ZnPc/DTX5-NPs) were selected for further investigations. The allocation of ZnPc and DTX into the colloid was investigated by complementary spectroscopic techniques. In particular, fluorescence emission studies showed the entrapment of ZnPc as a monomer in the carrier, with a low tendency to self-aggregate and consequently a fairly high propensity to photogenerate singlet oxygen. The interaction of SC16OH with DTX, co-entrapped with ZnPc, was elucidated by (1)H NMR and 2D ROESY, which suggested the presence of the chemotherapeutic in the hydrophobic portion of SC16OH. ZnPc/DTX5-NPs were fairly stable in different biological relevant media within 24h. Finally, in vitro potential of the nanoassembly was evaluated in HeLa cancer cells by cell viability exploring both effects of DTX and ZnPc. Overall, results suggest the suitability of NPs based on SC16OH for delivering a combination of DTX with ZnPc to cancer cells, thus inducing photodynamic and antimitotic effects.