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BACKGROUND: Sesamoid pathology can lead to significant pain and disability both with activities of daily living and high-impact athletic movements. Sesamoidectomy is a widely used procedure for patients who fail conservative treatment measures. Traditional dorsal or plantar approaches for sesamoidectomy have shown to successfully alleviate pain, but complications were reported. A proposed alternative medial approach using a burr may provide many advantages compared with traditional approaches. This study presents patient outcomes and complications for this technique. METHODS: This was a retrospective chart review of patients undergoing sesamoidectomy (tibial, peroneal, or both) using a burr through a medial approach to the sesamoid metatarsal articulation. Data collected included patient demographics, radiographic analysis, and outcomes: Veterans Rand 12 Item Health Survey (VR-12), Foot and Ankle Ability Measure (FAAM), visual analog scale (VAS), patient satisfaction, and complications. RESULTS: Twenty-seven patients (29 feet) were included. The mean age was 38.4 years followed up for a mean of 30.9 months. VR-12 physical component improved from 35.98 ± 7.86 to 51.34 ± 8.01 (P < .001), FAAM ADL and sport improved from 58.33 ± 16.61 to 83.27 ± 18.28 (P < .001) and 26.37 ± 20.31 to 63.75 ± 29.74 (P < .001), respectively. Patient satisfaction with the treatment was 80.59% ± 27.06%. The overall complication rate was 11 (37.9%) whereas the overall reoperation rate was 4 (13.7%) of 29 feet. Complications included 1 arthrofibrosis, 1 flexor hallucis longus subacute rupture, and 1 asymptomatic hallux valgus. There were no sesamoid excision revisions. CONCLUSION: Sesamoidectomy using a medial approach with a burr provided significantly improved short-term functional outcomes, 80% patient satisfaction rate, with a relatively acceptable complications rate including 20% persistent pain. The medial approach is familiar to orthopaedic foot and ankle surgeons, provides adequate exposure, and eliminates the possibility of a painful plantar scar while avoiding disruption of the plantar plate, flexor hallucis brevis tendon, and ligamentous structures attached to the sesamoids. Larger studies with long-term follow-up from other centers are needed.
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BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a major health problem with a paucity of available information about its impact on female sexual dysfunction (FSD). AIM: We aimed to study the association between NAFLD and FSD in Egyptian premenopausal women. METHODS: Sexually active married premenopausal women who visited our NAFLD outpatient screening clinic (2019 to 2022) were divided into NAFLD and non-NAFLD (control) groups based on liver ultrasound and fatty liver index data. All participants completed the Arabic Female Sexual Function Index (ArFSFI) questionnaire. The resulting data were used to calculate the domains and total scores. FSD is then graded as follows: no FSD (≥28.2), minimal (21.7-28.1), mild (14.5-21.6), moderate (7.3-14.4), and severe (≤7.2). OUTCOMES: We determined the proportions of patients and controls for whom ArFSFI scores indicated dissatisfaction with their sexual lives. RESULTS: Of 995 women participants whose FSFI scores were available, NAFLD was detected in 487 (48.9%) and absent in 508 (51.1%). The two groups were comparable in age, socioeconomic level, residence, and history of female genital cutting. The NAFLD patients had significantly much lower mean scores for the sexual arousal, lubrication, orgasm, satisfaction, and pain domains of the FSFI (P < .001 for all), while no statistical difference was noticed in the desire domain for NAFLD patients compared with the controls. NAFLD women had significantly lower mean total FSFI scores than the controls (mean [SD] 16.7 [6.8] vs 21.7 [5.1], respectively; P < .001) with higher rates of FSD (98.5% vs 82.1%; P < .001, respectively). Most NAFLD women had higher FSD grades than controls (%): no FSD (1.5, 17.9), minimal (20.6, 51.8), mild (42.5, 38.8), moderate (26.2, 9.4), and severe (10.7, none), respectively. CLINICAL IMPLICATIONS: Given the high prevalence of FSD in patients with NAFLD, greater attention to FSF could improve the quality of life in patients with NAFLD. STRENGTHS AND LIMITATIONS: This study was limited by the lack of testing of sex hormones and some other important factors that were not tested (eg, age, socioeconomic level, residence, and female genital cutting), as these characteristics were previously matched. Strengths of the study include the large study size, to our knowledge the largest to date to investigate the possible link between FSD and NAFLD in premenopausal women, together with the inclusion of the detailed version of the validated ArFSFI. CONCLUSIONS: In Egyptian premenopausal women, NAFLD could harm their sexual function.
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Nanobodies are the smallest known antigen-binding molecules to date. Their small size, good tissue penetration, high stability and solubility, ease of expression, refolding ability, and negligible immunogenicity in the human body have granted them excellence over conventional antibodies. Those exceptional attributes of nanobodies make them promising candidates for various applications in biotechnology, medicine, protein engineering, structural biology, food, and agriculture. This review presents an overview of their structure, development methods, advantages, possible challenges, and applications with special emphasis on infectious diseases-related ones. A showcase of how nanobodies can be harnessed for applications including neutralization of viruses and combating antibiotic-resistant bacteria is detailed. Overall, the impact of nanobodies in vaccine design, rapid diagnostics, and targeted therapies, besides exploring their role in deciphering microbial structures and virulence mechanisms are highlighted. Indeed, nanobodies are reshaping the future of infectious disease prevention and treatment.
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Enfermedades Transmisibles , Anticuerpos de Dominio Único , Anticuerpos de Dominio Único/inmunología , Humanos , Enfermedades Transmisibles/inmunología , Enfermedades Transmisibles/terapia , Animales , Biotecnología/métodos , Ingeniería de Proteínas/métodosRESUMEN
AIMS: The current work aims to fully characterize a new antimicrobial agent against Acinetobacter baumannii, which continues to represent a growing threat to healthcare settings worldwide. With minimal treatment options due to the extensive spread of resistance to almost all the available antimicrobials, the hunt for new antimicrobial agents is a high priority. METHODS AND RESULTS: An Egyptian soil-derived bacterium strain NHM-077B proved to be a promising source for a new antimicrobial agent. Bio-guided fractionation of the culture supernatants of NHM-077B followed by chemical structure elucidation identified the active antimicrobial agent as 1-hydroxy phenazine. Chemical synthesis yielded more derivatives, including dihydrophenazine (DHP), which proved to be the most potent against A. baumannii, yet it exhibited a marginally safe cytotoxicity profile against human skin fibroblasts. Proteomics analysis of the cells treated with DHP revealed multiple proteins with altered expression that could be correlated to the observed phenotypes and potential mechanism of the antimicrobial action of DHP. DHP is a multipronged agent that affects membrane integrity, increases susceptibility to oxidative stress, interferes with amino acids/protein synthesis, and modulates virulence-related proteins. Interestingly, DHP in subinhibitory concentrations re-sensitizes the highly virulent carbapenem-resistant A. baumannii strain AB5075 to carbapenems providing great hope in regaining some of the benefits of this important class of antibiotics. CONCLUSIONS: This work underscores the potential of DHP as a promising new agent with multifunctional roles as both a classical and nonconventional antimicrobial agent that is urgently needed.
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Acinetobacter baumannii , Antibacterianos , Carbapenémicos , Farmacorresistencia Bacteriana Múltiple , Pruebas de Sensibilidad Microbiana , Estrés Oxidativo , Fenazinas , Acinetobacter baumannii/efectos de los fármacos , Fenazinas/farmacología , Fenazinas/química , Estrés Oxidativo/efectos de los fármacos , Carbapenémicos/farmacología , Antibacterianos/farmacología , Farmacorresistencia Bacteriana Múltiple/efectos de los fármacos , Humanos , Infecciones por Acinetobacter/tratamiento farmacológico , Infecciones por Acinetobacter/microbiología , Microbiología del SueloRESUMEN
The current work aimed to improve the combustion behavior of a non-premixed twin-jet inlet. The effect of fuel and air inlet shape under different velocities was studied using ANSYS as the process takes place in species transport and finite rate/eddy dissipation, and the flow is considered to be turbulent. Two different shapes (circular-circular and circular-elliptic inlet jets) were investigated, and the results show that the behavior and intensity of the fire are affected by variations in the speed and, geometry of the inlet which affects temperature, heat release rate, combustion efficiency, and equivalent ratios. The optimum air/fuel velocities were found to be 2.5/1.5 with circular-circular inlet jets.
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The literature offers limited information on the effect of obesity on the rate of force development (RFD), a critical parameter for mobility in older adults. The objectives of this study were to explore the influence of obesity on the RFD in older adults and to examine the association between this neuromuscular parameter and walking speed. The participants (42 older adults) were classified into two groups: the control group (CG, n = 22; mean age = 81.13 ± 4.02 years; body mass index (BMI) = 25.13 ± 3.35 kg/m2), and the obese group (OG, n = 20; mean age = 77.71 ± 2.95 years; BMI = 34.46 ± 3.25 kg/m2). Walking speed (m/s) was measured using the 10 m walking test. Neuromuscular parameters of the plantar flexors were evaluated during a maximal voluntary contraction test using a dynamometer. The RFD was calculated from the linear slop of the force-time curve in the following two phases: from the onset of the contraction to 50 ms (RFD0-50) and from 100 to 200 ms (RFD100-200). The gait speed was lower in the OG compared to the CG (p < 0.001). The RFD50/100 and RFD100/200 were lower in the OG compared to the CG (p < 0.001). The RFD50/100 was found to be the predominant influencer on gait speed in the OG. In conclusion, obesity negatively impacts the RFD in older adults and RFD stands out as the primary factor among the studied parameters influencing gait speed.
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BACKGROUND: Infections caused by Acinetobacter baumannii are becoming a rising public health problem due to its high degree of acquired and intrinsic resistance mechanisms. Bacterial lipases penetrate and damage host tissues, resulting in multiple infections. Because there are very few effective inhibitors of bacterial lipases, new alternatives for treating A. baumannii infections are urgently needed. In recent years, Brassica vegetables have received a lot of attention since their phytochemical compounds have been directly linked to diverse antimicrobial actions by inhibiting the growth of various Gram-positive and Gram-negative bacteria, yeast, and fungi. Despite their longstanding antibacterial history, there is currently a lack of scientific evidence to support their role in the management of infections caused by the nosocomial bacterium, A. baumannii. This study aimed to address this gap in knowledge by examining the antibacterial and lipase inhibitory effects of six commonly consumed Brassica greens, Chinese cabbage (CC), curly and Tuscan kale (CK and TK), red and green Pak choi (RP and GP), and Brussels sprouts (BR), against A. baumannii in relation to their chemical profiles. METHODS: The secondary metabolites of the six extracts were identified using LC-QTOF-MS/MS analysis, and they were subsequently correlated with the lipase inhibitory activity using multivariate data analysis and molecular docking. RESULTS: In total, 99 metabolites from various chemical classes were identified in the extracts. Hierarchical cluster analysis (HCA) and principal component analysis (PCA) revealed the chemical similarities and variabilities among the specimens, with glucosinolates and phenolic compounds being the major metabolites. RP and GP showed the highest antibacterial activity against A. baumannii, followed by CK. Additionally, four species showed a significant effect on the bacterial growth curves and demonstrated relevant inhibition of A. baumannii lipolytic activity. CK showed the greatest inhibition (26%), followed by RP (21%), GP (21%), and TK (15%). Orthogonal partial least squares-discriminant analysis (OPLS-DA) pinpointed 9 metabolites positively correlated with the observed bioactivities. Further, the biomarkers displayed good binding affinities towards lipase active sites ranging from -70.61 to -30.91 kcal/mol, compared to orlistat. CONCLUSION: This study emphasizes the significance of Brassica vegetables as a novel natural source of potential inhibitors of lipase from A. baumannii.
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Acinetobacter baumannii , Brassica , Brassica/química , Simulación del Acoplamiento Molecular , Antibacterianos/farmacología , Antibacterianos/química , Espectrometría de Masas en Tándem , Bacterias Gramnegativas , Bacterias Grampositivas , Fitoquímicos/farmacología , LipasaRESUMEN
Multidrug-resistant clinical isolates of Moraxella catarrhalis have emerged, increasing the demand for the identification of new treatment and prevention strategies. A thorough understanding of how M. catarrhalis can establish an infection and respond to different stressors encountered in the host is crucial for new drug-target identification. Formaldehyde is a highly cytotoxic compound that can be produced endogenously as a by-product of metabolism and exogenously from environmental sources. Pathways responsible for formaldehyde detoxification are thus essential and are found in all domains of life. The current work investigated the role of the system consisting of the S-hydroxymethyl alcohol dehydrogenase (AdhC), a Zn-dependent class III alcohol dehydrogenase, and the S-formyl glutathione hydrolase (FghA) in the formaldehyde detoxification process in M. catarrhalis. Bioinformatics showed that the components of the system are conserved across the species and are highly similar to those of Streptococcus pneumoniae, which share the same biological niche. Isogenic mutants were constructed to study the function of the system in M. catarrhalis. A single fghA knockout mutant did not confer sensitivity to formaldehyde, while the adhC-fghA double mutant is formaldehyde-sensitive. In addition, both mutants were significantly cleared in a murine pulmonary model of infection as compared to the wild type, demonstrating the system's importance for this pathogen's virulence. The respective phenotypes were reversed upon the genetic complementation of the mutants. To date, this is the first study investigating the role of the AdhC-FghA system in formaldehyde detoxification and pathogenesis of M. catarrhalis.
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Moraxella catarrhalis , Streptococcus pneumoniae , Animales , Ratones , Moraxella catarrhalis/genética , Streptococcus pneumoniae/genética , Formaldehído , Glutatión , HidrolasasRESUMEN
As a progressive neuropathic condition, glaucoma can cause lifelong blindness if left untreated. Novel phenylpyridazine-tethered sulfonamides were designed as selective inhibitors for carbonic anhydrase (CA) isoform II to find effective therapeutic agents for glaucoma. Subsequently, the target inhibitors were synthesized and assessed for their inhibitory action against cytosolic CA I and II. Interestingly, the synthesized molecules poorly inhibited CA I while exhibiting low subnanomolar potency against CA II. Compound 7c disclosed the most potent activity (IC50 = 0.63 nM) with high selectivity against CA II (605-fold than acetazolamide selectivity). Moreover, compound 7c also showed significant in vivo IOP-reducing properties in the in vivo model of glaucoma. Furthermore, the binding of compound 7c to CA II was assessed at the molecular level, exploiting the molecular docking approach.
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Glaucoma , Sulfonamidas , Humanos , Sulfonamidas/farmacología , Sulfonamidas/uso terapéutico , Sulfonamidas/química , Anhidrasa Carbónica II , Inhibidores de Anhidrasa Carbónica/farmacología , Inhibidores de Anhidrasa Carbónica/uso terapéutico , Inhibidores de Anhidrasa Carbónica/química , Estructura Molecular , Relación Estructura-Actividad , Simulación del Acoplamiento Molecular , Glaucoma/tratamiento farmacológico , Sulfanilamida , Anhidrasa Carbónica IX/metabolismoRESUMEN
Abstract This study presents the first preliminary phytochemical screening and investigation of the lipoidal matter of Latania verschaffeltii Lem. leaves, belonging to the Arecaceae family. Gas chromatography coupled with mass spectroscopy (GC/MS) was used to analyze and identify compounds of saponifiable and unsaponifiable content. The preliminary phytochemical screening of total methanolic extract of Latania verschaffeltii Lem. leaves revealed the presence of unsaturated sterols and/or triterpenes, carbohydrates and/or glycosides, flavonoids, tannins, saponins, and phenolic acids in the leaves. However, cardenolides, cyanogenic compounds, alkaloids, and iridoids were not detected. The results of the gas chromatography/mass spectrometry (GC/MS) analysis indicated that the percentage of saturated fatty acids (83.82%) is higher than that of unsaturated fatty acids (9.42%). The predominant methyl ester of a saturated fatty acid detected in the sample was hexadecanoic acid methyl ester, accounting for 41.68% of the total. The composition of the unsaponifiable matter consisted of hydrocarbons (5.66%), fatty alcohols (0.96%), terpenes (85.97%), and sterols (2.18%). The major terpenes observed were phytol (43.62%) and squalene (39.27%).
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Triaje , Hojas de la Planta/efectos adversos , Arecaceae/clasificación , Egipto/etnología , Fitoquímicos/análisis , Alcaloides/agonistas , Cromatografía de Gases y Espectrometría de Masas/métodosRESUMEN
BACKGROUND: The purpose of the current study was to assess the impact of three esthetic CAD/CAM material, titanium base height and their interaction on the retention strength of a hybrid-abutment-crown. METHODS: A total of 42 hybrid-abutment crowns with identical external geometries were designed in CAD software to fit two different Ti-Base abutment heights (n = 42/abutment height): either short (S) with 4 mm (n = 21) or long (L) 7 mm (n = 21) height. Each main group was divided into 3 subgroups (n = 7), according to esthetic crown material, Zirconia (Z), Lithium disilicate (L) and Hybrid ceramic (V). A universal primer and an adhesive resin cement were used for bonding according to the manufacturer instructions. Artificial aging in form of water storage (30 days), chewing simulation (50,000-cycles, 49 N, 1.67 Hz) and thermal cyclic (5000 cycles at 5-55 °C) were applied, specimens were pulled-out under tension load in (N) using a universal testing machine. Two and one-way ANOVA and Post Hoc Tukey test were used for statistical analysis. RESULTS: Long lithium disilicate (LL) group showed the highest retention (738.7 ± 178.5) followed by short lithium disilicate (LS) group (688.6 ± 169.9). Meanwhile, short zirconia (ZS) showed the lowest retention strength (231.1 ± 86.9). CONCLUSION: CAD/CAM fabricated lithium disilicate hybrid-abutment-crown can be used instead of conventional crowns over implant abutment. Etchable ceramics are recommended as a material of choice for CAD/CAM fabricated hybrid-abutment-crowns instead of zirconia in terms of retention durability.
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Implantes Dentales , Titanio , Humanos , Pilares Dentales , Coronas , Cerámica , Diseño Asistido por Computadora , Ensayo de Materiales , Análisis del Estrés Dental , Fracaso de la Restauración DentalRESUMEN
Cavovarus or high-arched foot is a common foot deformity that occurs due to the disruption of the foot-driven equilibrium between the first metatarsal, fifth metatarsal, and the heel. This imbalance leads to an increase in the foot's normal plantar concavity. Cavovarus deformity ranges from a mild and flexible malalignment to a fixed, complex, and severe deformation. Subtle cavovarus foot, the mild form of the cavus foot, was first described by Manoli and colleagues.
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Deformidades del Pie , Huesos Metatarsianos , Pie Cavo , Humanos , Pie , Deformidades del Pie/etiología , Deformidades del Pie/cirugía , Pie Cavo/diagnóstico , Pie Cavo/etiología , Pie Cavo/cirugía , Huesos Metatarsianos/cirugía , AtletasRESUMEN
The current study proposes a new strategy for using small hydroelectric turbines in downstream river branches with the least amount of construction and the lowest cost by comparing two different methods of installing the turbines, the first by installing the turbines at the river's bottom and the second by installing the turbines on floating boats. The methodology of this article is based on predicting the distribution of velocities through the watercourse using experimental data collected at various points in the river's depth, and then predicting the resulting electrical power for different sizes of turbines, as well as estimating the number of turbines for each row and the number of rows along the river. Therefore, Investigate the proposed systems. The proposed small hydropower system's economic viability and environmental impact are investigated in this article. According to the nature of the waterway, the best diameter of a turbine that can be used is 1.5 m based on water velocities and river depths. The proposed power plant generated 25.8 kW per single turbine row, with an estimated cost of produced power (0.035 USD/kWh) of approximately 20 turbines installed per row. Compared to other renewable energy sources, the proposed hydropower system is cost-effective and environmentally friendly, as generating electricity with the proposed small hydropower plant could reduce annual carbon dioxide emissions by 368 tones of CO2 per single turbine row.
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Antimicrobial resistance has become a concern as a worldwide threat. A novel scaffold of phenylthiazoles was recently evaluated against multidrug-resistant Staphylococci to control the emergence and spread of antimicrobial resistance, showing good results. Several structural modifications are needed based on the structure-activity relationships (SARs) of this new antibiotic class. Previous studies revealed the existence of two key structural features essential for the antibacterial activity, the guanidine head and lipophilic tail. In this study, a new series of twenty-three phenylthiazole derivatives were synthesized utilizing the Suzuki coupling reaction to explore the lipophilic part. The in vitro antibacterial activity was evaluated against a range of clinical isolates. The three most promising compounds, 7d, 15d and 17d, with potent MIC values against MRSA USA300 were selected for further antimicrobial evaluation. The tested compounds exhibited potent results against the tested MSSA, MRSA, and VRSA strains (concentration: 0.5 to 4 µg mL-1). Compound 15d inhibited MRSA USA400 at a concentration of 0.5 µg mL-1 (one-fold more potent than vancomycin) and showed low MIC values against ten clinical isolates, including linezolid-resistant strain MRSA NRS119 and three vancomycin-resistant isolates VRSA 9/10/12. Moreover, compound 15d retained its potent antibacterial activity using the in vivo model by the burden reduction of MRSA USA300 in skin-infected mice. The tested compounds also showed good toxicity profiles and were found to be highly tolerable to Caco-2 cells at concentrations of up to 16 µg mL-1, with 100% of the cells remaining viable.
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OBJECTIVE: This in-vitro study is planned to analyze the effect of different thicknesses of ceramic occlusal veneers and different surface treatments on fracture resistance. MATERIALS AND METHODS: A total of 48 sound mandibular molars are anatomically prepared from the occlusal surface with two different thicknesses (1.0 and 0.5 mm). CAD/CAM zirconia-reinforced glass ceramic blocks (Vita Suprinity) are used for fabricating occlusal veneers. The teeth are randomly divided into two primary groups A and B (n=24) according to occlusal veneer thickness. Each group is subdivided according to surface conditioning into three equal subgroups (n=8)-subgroup HF: etching with hydrofluoric acid and ceramic primer application; subgroup APF: etching with acidulated phosphate fluoride and ceramic primer application; subgroup EP: conditioning with etch and prime only. Dual-cure adhesive resin cement (Multilink Automix) is utilized to adhesively bond the veneers. All specimens are subjected to 240,000 cycles of dynamic load aging prior to the fracture resistance test. The fracture resistance is measured in Newton (N). The Failure mode patterns are analyzed and categorized using a scanning electron microscope (SEM). The results are analyzed using a two-way ANOVA with Bonferroni's Post-Hoc test, followed by a one-way ANOVA for each factor. That is in addition to one-way ANOVA for surface treatment under each thickness, each followed by Bonferroni's Post-Hoc test. Then, a T-test is used to compare the two thicknesses under each surface treatment. All tests are set at 0.05 significance level. RESULTS: The two-way ANOVA test revealed that restoration thickness and surface treatment both significantly affect the fracture resistance values (p<0.05). The highest fracture resistance mean (2672±216N) is obtained from HF at 1.0 mm thickness, while the lowest mean (2104±299N) is obtained from APF at 0.5 mm thickness. CONCLUSION: All test groups, regardless of thickness, demonstrated fracture resistance values that exceeded both normal and parafunctional bite forces. The veneers that bonded after hydrofluoric acid etching followed by ceramic primer application showed more favourable fracture patterns.
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Ácido Fluorhídrico , Cementos de Resina , Humanos , Cerámica/química , Porcelana Dental , Ácido Fluorhídrico/química , Ensayo de Materiales , Diente Molar , Cementos de Resina/química , Propiedades de SuperficieRESUMEN
BACKGROUND: The purpose of the current study was to assess the impact of restoration thickness, surface conditioning and the interaction between them on the fracture resistance of CAD/CAM fabricated lithium disilicate occlusal veneers. METHODS: A total of 42 maxillary molars were prepared to receive CAD/CAM fabricated lithium disilicate occlusal veneer either with 0.5 mm (n = 21) or 1 mm (n = 21) thickness. Each main group was divided into 3 subgroups (n = 7), according to surface treatment, HF acid (HF-1, HF-0.5), acidulated phosphate fluoride (APF-1, APF-0.5) and Monobond etch & prime (MON-1, MON-0.5). Multilinik N (Ivoclar-Vivadent) adhesive resin cement was used for bonding according to the manufacturer instructions. One hour after bonding, specimens were stored in water bath for 75 days followed by cyclic loading fatigue for 240,000 cycles to simulate clinical situation. Finally, specimens were fractured under compressive load in (N) using a universal testing machine. Two and one-way ANOVA and Post Hoc Tukey test were used for statistical analysis. RESULTS: The means ± SD (N) fracture load for each group were calculated. MON-1 group showed the highest fracture load (1644.7 ± 155.3) followed by HF-1 group (1514.6 ± 212.5). Meanwhile, APF-0.5 showed the lowest fracture load (962 ± 249.6). CONCLUSION: CAD/CAM fabricated lithium disilicate occlusal veneers can be used with a thickness of 0.5 mm instead of conventional crowns. Monobond etch & prime is recommended as a surface treatment for CAD/CAM fabricated lithium disilicate occlusal veneer due to biological hazards of Hydrofluoric acid.
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Cerámica , Porcelana Dental , Humanos , Cerámica/química , Ensayo de Materiales , Porcelana Dental/química , Coronas , Diseño Asistido por Computadora , Análisis del Estrés Dental , Fracaso de la Restauración DentalRESUMEN
Successful pancreas or islet transplantation is currently the only cure for type 1 diabetes mellitus. Since the first pancreas transplant in 1966, there have been various refinements of surgical technique along with improved immunosuppressive regimens, resulting in significantly improved outcomes, with contemporary research into graft monitoring and newer biomarkers, potentially lengthening graft survival rates further. Patients with insulin-dependent diabetes mellitus who are eligible for pancreas or islet transplantation represent a select group, the tip of the iceberg for a significant global diabetes disease burden. In the last 50 years, there have been quantum advances in alternative technologies in diabetes therapy, both experimental and translational. Further development and improved access are required to treat the larger proportion of people suffering from diabetes. Emerging stem cell therapy is still experimental whereas alternatives including automated insulin delivery systems and islet cell transplantation are already used in some countries. Whilst automated insulin delivery systems have increased in efficacy, they still do not achieve the near physiological control of blood sugar, which can be achieved by successful pancreas or islet transplantation. This state-of-the-art review provides a summary of pancreas and islet transplantation to its current place in diabetes therapy, along with alternative and future therapies, including the obstacles associated with the dissemination of these new therapies. With the advent of these modern cellular and technological advances, this review addresses the question: are we entering an era where whole organ pancreas transplantation could be replaced entirely by modern technological advances in diabetes therapy?