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1.
Arch Pediatr ; 31(3): 179-182, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38538466

RESUMEN

BACKGROUND: The COVID-19 pandemic caused a global public health problem with high morbidity and mortality rates. In this study, we aimed to evaluate the 25-hydroxyvitamin D (25(OH)D) status of patients presenting to the Pediatrics Department of Gaziantep Maternity and Children's Hospital in the 1-year period after the onset of the COVID-19 pandemic according to ethnicity, age, and gender. METHOD: This cross-sectional study included the data of 7640 patients whose 25(OH)D levels were assessed at our hospital between March 2021 and March 2022. Vitamin D levels, age, gender, and the ethnic origin of the patients were retrospectively scanned and recorded from the laboratory results system. Based on the World Health Organization (WHO) classification of vitamin D levels, patients were divided into three groups: <10 ng/mL = vitamin D deficiency; 10-19 ng/mL = vitamin D insufficiency, and 20 ng/mL and over = normal vitamin D status. RESULTS: The mean age of the 7640 patients who presented to the pediatrics department was 7.47 (±5.3) years. Of these patients, 48 % (3665) were male and 52 % (3975) were female. The mean vitamin D level of girls was 18.1 (±15.2) ng/mL, and of boys it was 20.2 (±15.4) ng/mL, with a statistically significant difference (p < 0.001). In total, 21.2 % (1650) of patients had deficient, 43.3 % (3310) of patients had insufficient, and 35.5 % (2710) of patients had normal 25(OH)D levels. Overall, 21.8 % of the patients (1667) were immigrants, and in this group the deficiency was found to be statistically significantly higher at 27.4 % (n = 456; p < 0.001). There was a low negative correlation between the age of the patients and their 25(OH)D levels (r=-0.35; p < 0.001). CONCLUSIONS: Vitamin D deficiency remains a serious public health problem. Since the most important production source is exposure to the sun, it must be kept in mind that vitamin D should be supported during lockdown pandemic processes.


Asunto(s)
COVID-19 , Deficiencia de Vitamina D , Embarazo , Niño , Humanos , Femenino , Masculino , Adolescente , Preescolar , Pandemias , Estudios Retrospectivos , Estudios Transversales , Hospitales Provinciales , COVID-19/epidemiología , Control de Enfermedades Transmisibles , Vitamina D , Vitaminas , Deficiencia de Vitamina D/diagnóstico , Deficiencia de Vitamina D/epidemiología
2.
Diagn Microbiol Infect Dis ; 108(4): 116192, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38330685

RESUMEN

We hypothesized that the loop material and size could affect the results of the culture when compared to the calibrated pipette. A total of 484 urine samples were included in the study, and each sample was plated by using different loop types and the calibrated pipette. The bacterial counts per milliliter were calculated and compared, with a focus on the important cutoff values of 10³ and 104 CFU/ml for further identification. When considering the 10³ CFU/ml as cutoff value, 1 µl and 10 µl plastic loops gave the highest sensitivity (86.8 %), whereas the 10 µl metal loop had the lowest sensitivity (64.2 %). For the 104 CFU/ml cutoff value, 1 µl plastic loop inoculation demonstrated the highest sensitivity (75.9 %), while the 10 µl metal loop provided the lowest sensitivity (26.5 %). These results suggest that the single use plastic loops are functional, sensitive, useful especially for critical sample.


Asunto(s)
Infecciones Urinarias , Humanos , Infecciones Urinarias/microbiología , Urinálisis , Carga Bacteriana , Toma de Muestras de Orina , Orina/microbiología , Sensibilidad y Especificidad
3.
Turk Neurosurg ; 34(1): 93-101, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38282587

RESUMEN

AIM: To investigate the presence of Sur1-Trpm4 receptors in high-grade glial tumors, and their relationship with edema volumes in preoperative magnetic resonance imaging (MRI) sequences. MATERIAL AND METHODS: MRI sections were extracted from T1-weighted (T1W) and T2-weighted (T2W) sequences and fluidattenuated inversion recovery (FLAIR) images. After that, T1W 3D magnetization-prepared rapid gradient echo (MP-RAGE) sequences were taken with and without contrast medium. Tumor and peritumoral edema volumes were calculated in cubic centimeters. Sur1- Trpm4 receptors were studied by immunohistochemical examination of tissue samples. Relationships between data were analyzed using Spearman's correlation coefficient. RESULTS: In the immunohistochemical examinations, 58% of the samples from patients with high-grade glial tumors were positive for Sur1 and 74% were positive for Trpm4. The volume of tumors was correlated with the volume of peritumoral edema. CONCLUSION: The presence of the Sur1-Trpm4 receptor complex in high-grade glial tumors was confirmed. Further preclinical or clinical studies are required to identify and validate the role of Sur1-Trpm4 in glial tumor subgroups.


Asunto(s)
Glioma , Humanos , Glioma/complicaciones , Glioma/diagnóstico por imagen , Imagen por Resonancia Magnética/métodos , Edema/diagnóstico por imagen
4.
Indian J Cancer ; 60(4): 458-463, 2023 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-38078465

RESUMEN

BACKGROUND: The incidence of bladder cancers (BCs) is increasing day by day in both males and females with increased smoking. New treatment protocols are required due to the long follow-up times and high recurrence rates. CD47 (integrin-associated protein) is a membrane receptor that is effective in normal and pathophysiological events such as apoptosis, proliferation, adhesion, and immunity. Phagocytosis of both normal and tumor cells is prevented, by binding to the ligand signal regulatory protein-1 (SIRP-1)α on macrophages. Anti-CD47 antibodies can eliminate the binding and may be effective in treatment. METHODS: The study included 194 cases with urothelial carcinoma (UC) who underwent transurethral resection (TUR) of the bladder and had been followed up for one year. Cytoplasmic and membranous staining was preferred for CD47-positive staining. Staining results were compared with tumor grades, pathologic tumor stage, recurrence, and metastasis grade. RESULTS: The prevalence and intensity of CD47 staining in BCs were evaluated in this study. High-grade tumors were stained more pronouncedly compared with low-grade tumors and normal epithelium. The prevalence of CD47 staining was significant in pT2 (Pathological tumor stage 2, invades of muscularis propria) tumors, and its correlation with pTa (Pathological tumor stage a, noninvasive papillary carcinoma) tumors was significant ( P < 0.001). In the intensity evaluation, there was a significant difference between pTa and pT2 and between pT1 (Pathological tumor stage 1, invades lamina propria) and pT2 ( P = 0.003). CONCLUSION: CD47 is expressed strongly in high-grade tumors. The prevalence and intensity of CD47 staining are high in pathologic tumor stage, recurrence, and distant metastases and are considered poor prognostic markers. We believe that anti-CD47 antibodies can be used as an alternative to the current treatment or in combination with other medications, and the systemic side effects that may occur with intravesical treatment can be prevented.


Asunto(s)
Carcinoma Papilar , Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Masculino , Femenino , Humanos , Carcinoma de Células Transicionales/patología , Carcinoma de Células Transicionales/cirugía , Neoplasias de la Vejiga Urinaria/patología , Antígeno CD47 , Vejiga Urinaria/patología , Carcinoma Papilar/patología
5.
Orthopadie (Heidelb) ; 51(12): 996-1002, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36125536

RESUMEN

BACKGROUND: This retrospective study compares tibial component rotations and radiological and functional outcomes in patients who underwent Oxford medial unicompartmental knee arthroplasty (UKA), using the antero-posterior (AP) tibia axis or anterior superior iliac spine (ASIS) as the landmarks for the direction of the vertical cut. METHODS: A total of 86 patients, who underwent Oxford medial UKA were divided into 2 groups, each consisting of 43 patients, according to the use of AP axis (group I) or ASIS (group II) as landmarks for the rotation of vertical tibial cut and compared for the radiological and functional outcomes. Tibial component rotations (α-angle), involvement of the posterior cruciate ligament (PCL) fossa, and instant bearing position (IBP) were measured on computed tomography (CT) images. Functional outcomes were evaluated using Oxford knee score (OKS) and Knee Society score (KSS). RESULT: The median α­angle was significantly smaller in group I than group II (2.5°, range -4-5.5° vs. -6°, range -13-0.5°, p < 0.001). The rates of PCL fossa involvements were 14 (32.6%) and 17 (39.5%, p = 0.7). The median flexion angle of the femoral component (7° vs. 10.5°) and posterior tibial slope (6° vs. 8°) were significantly lower in group I than group II (p = 0.001). All other radiological parameters, preoperative and final OKS and KSS were statistically similar in both groups. CONCLUSION: Taking the AP tibial axis as a landmark for vertical tibial cut rotation provides more neutral tibial component rotation in Oxford medial UKA compared to ASIS; however, this difference may not influence the clinical outcomes.


Asunto(s)
Artroplastia de Reemplazo de Rodilla , Prótesis de la Rodilla , Osteoartritis de la Rodilla , Humanos , Artroplastia de Reemplazo de Rodilla/efectos adversos , Tibia/diagnóstico por imagen , Prótesis de la Rodilla/efectos adversos , Osteoartritis de la Rodilla/diagnóstico por imagen , Estudios Retrospectivos
6.
J Food Biochem ; 46(11): e14299, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-35778816

RESUMEN

Ulcerative colitis (UC) is a chronic and inflammatory disorder of the gastrointestinal (GI) tract. UC usually worsens the daily life of the patient and may sometimes become mortal. There is no known remedy discovered against UC, yet. Rosmarinus officinalis consists of many flavonoids, phenolics, and terpenoids possessing various biological activities such as anti-inflammatory. For this reason, in the present study, anti-ulcerative colitis effect of ROME (Rosmarinus officinalis methanol extract) was investigated comprehensively by histopathological studies, a number of in vivo anti-inflammatory activities and several in vivo antioxidant activities, in addition to in vitro antioxidant activities and biochemical analyses. In addition, the toxic effects of ROME were examined. The results showed that ROME provided a significant healing effect against ulcerative colitis in rats. Both in vitro and in vivo assay results correlated with histopathological examinations. ROME exhibited minimal toxic alterations. When the results of rosemary are compared with the results of sulfasalazine, it can be suggested that instead of synthetic drugs with side effects, natural sources can be used for the treatment of various diseases. Although some activities of rosemary have been investigated in vitro in the previous studies, this is the first study revealing anti-ulcerative colitis effect of rosemary through histopathological studies, in vivo and in vitro assays as well as biochemical analyses overall. PRACTICAL APPLICATIONS: The results revealed and proved that ROME provided a significant healing effect against ulcerative colitis in rats. When the results of rosemary are compared with the results of sulfasalazine, a commercially available drug on the market, it can be suggested that instead of synthetic drugs with side effects, natural sources can be used for the treatment of various inflammatory diseases such as UC disease. In addition, ROME possesses limited toxic alterations, but not much more than the commercial drug. As a future perspective, lethal and therapeutic doses can be examined and determined. Thus, human studies can be started through this comprehensive in vivo study on rosemary which is commonly used as an edible plant and spice all over the world.


Asunto(s)
Colitis , Rosmarinus , Drogas Sintéticas , Ratas , Humanos , Animales , Antioxidantes/farmacología , Plantas Comestibles , Sulfasalazina , Extractos Vegetales/toxicidad , Antiinflamatorios/farmacología , Colitis/tratamiento farmacológico
7.
Protein J ; 41(3): 394-402, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35715719

RESUMEN

In this study, ene reductase (ER) was entrapped in polyvinyl alcohol hydrogel, adsorbed on montmorillonite and immobilized covalently on glutaraldehyde activated 3-aminopropyl-functionalized silica gel. Although protein recovery yields were at least 85% for adsorption and covalent immobilization, only the encapsulated ER showed activity. The activity of free and entrapped ER preparations was measured by following NADPH-dependent reduction of 2-cyclohexen-1-one. The both protein recovery and activity recovery yields were calculated as 100% when 1 mg protein was used for immobilization. The both free and entrapped ER preparations showed the same optimum pH and temperature as 7.0 and 30 °C, respectively. The entrapped ER showed 34.4-fold more thermal stability than that of the free ER at 30 °C. Michaelis-Menten constant and maximum velocity values were 0.25 mM and 1.2 U/mg protein, respectively for the free ER towards 2-cyclohexen-1-one. The corresponding values were 1.5 mM and 0.9 U/mg protein for the entrapped ER. The results of time-course reduction of 2-cyclohexen-1-one showed that the entrapped ER catalyzed the reaction as effectively as the free ER. The entrapped ER remained 85% of its initial activity after 10 reused cycles.


Asunto(s)
Enzimas Inmovilizadas , Oxidorreductasas , Estabilidad de Enzimas , Concentración de Iones de Hidrógeno , Alcohol Polivinílico , Temperatura
8.
Ulus Travma Acil Cerrahi Derg ; 28(3): 320-327, 2022 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-35485559

RESUMEN

BACKGROUND: Generalized joint hypermobility (GJH) is a risk factor for anterior cruciate ligament (ACL) injury and ACL graft failure and is considered an indication for anterolateral ligament (ALL) reconstruction. The aim of this retrospective study was to compare functional outcomes, rupture rates, and residual instability in patients with GJH undergoing isolated ACL reconstruction or combined ACL reconstruction and ALL augmentation with internal bracing (ALL-IB). METHODS: Sixty-eight patients with GJH and unilateral ACL injury were randomly assigned to undergo either isolated ACL reconstruction (Group 1) or combined ACL reconstruction and ALL-IB (Group 2). The patients were evaluated pre- and postoperatively; their medical histories; physical examination results; anterior knee translation, as measured using the KT-1000 arthrometer; and scores of validated knee assessments were recorded. RESULTS: Groups 1 and 2 consisted of 37 and 31 patients, respectively. The mean follow-up was 30.1±4.1 and 28.1±2.9 months, respectively. In the final evaluation, the patients in Group 2 showed better rotational stability, as evaluated by the pivot-shift test (p=0.013); better anteroposterior stability, as evaluated by KT-1000 arthrometry (p=0.001); similar function (p=0.14 for the Lysholm, p=0.11 for the Cincinnati, and p=0.19 for the International Knee Documentation Committee subjective score); and failure rate (p=0.41). CONCLUSION: The functional outcomes were similar between the groups. The stability outcomes after combined ACL and ALL-IB were better than those after isolated ACL reconstruction in patients with GJH. However, the technique and its results need to be validated in larger patient series and prospective randomized controlled trials.


Asunto(s)
Lesiones del Ligamento Cruzado Anterior , Reconstrucción del Ligamento Cruzado Anterior , Inestabilidad de la Articulación , Ligamento Cruzado Anterior/cirugía , Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Humanos , Inestabilidad de la Articulación/cirugía , Estudios Prospectivos , Estudios Retrospectivos
10.
Curr Med Imaging ; 18(10): 1099-1105, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35331119

RESUMEN

BACKGROUND: We aimed to differentiate Glioblastoma Multiforme (GBM) from benign lesions like Developmental Venous Anomaly (DVA) and Cavernous Malformation (CM) by Dynamic Contrast-Enhanced MR Perfusion (DCE-MRP) markers such as Ktrans, Ve, Kep, and IAUC. METHODS: We retrospectively evaluated 20 patients; 10 GBM as the malignant group, 5 CM and 5 DVA as the benign group. Ktrans, Kep, Ve, and IAUC parameters were measured by DCE-MRP, within the lesion, at perilesional nonenhancing white matter (PLWM) and contralateral normal appearing white matter (CLWM). RESULTS: All benign and malignant lesions exhibited significantly increased Ktrans, Ve, and IAUC values compared to PLWM and CLWM (p < 0.001, p=0.006 and p<0.001). Subtracted Kep values between lesion and PLWM were significantly different between the benign and malignant groups, as the malignant group exhibited higher subtracted Kep values (p 0.035). For the malignant group; Ktrans and IAUC values at the lesion were positively correlated (r 0.911), while Kep and Ve at CLWM were negatively and strongly correlated (r 0.798). For the benign group; Ktrans with Ve and Ktrans with IAUC at lesion (r 0.708 and r 0.816 respectively), Ktrans and IAUC at PLWM (r 0.809), Ktrans and IAUC at CLWM(r 0.798) were strongly and positively correlated. Ktrans, Ve, and IAUC values can be used to restrict the lesion in both groups. CONCLUSION: Ktrans strongly correlates with IAUC and they can be used instead of each other in both benign and malignant lesions. Classical DCE-MRP parameters cannot be used in the differentiation of malignant lesions from benign vascular lesions. However, subtracted Kep values can be used to differentiate GBM from benign vascular lesions.


Asunto(s)
Medios de Contraste , Imagen por Resonancia Magnética , Encéfalo/diagnóstico por imagen , Humanos , Perfusión , Estudios Retrospectivos
11.
Biotechnol Appl Biochem ; 69(6): 2550-2560, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34962677

RESUMEN

This study presents that covalent immobilization technique has been utilized for the immobilization of l-lactate dehydrogenase (l-LDH) from porcine on mesoporous silica. To develop mesoporous silica as support material for use in l-LDH immobilization, the particle surfaces were functionalized with 3-aminopropyltrimethoxysilane and further conjugated with glutaraldehyde. The effect of some parameters such as glutaraldehyde concentration, immobilization pH, initial enzyme concentration, and immobilization time was investigated and the optimum conditions for these parameters were determined as 1% (w/v), pH 8.0, 1 mg/ml, and 120 min, respectively. The maximum working pH and temperature for the oxidation of lactate to pyruvate reaction were determined as 10.0 and 35°C for free and 9.0 and 40°C for immobilized l-LDH, respectively. The kinetic parameters (Km and Vmax ) of l-LDH for the oxidation of lactate to pyruvate reaction were examined as 1.02 mM and 7.58 U/mg protein for free and 0.635 mM and 1.7 U/mg protein for immobilized l-LDH, respectively. Moreover, the immobilized l-LDH was 1.3-fold more stable than free l-LDH at 25°C according to calculated t1/2 values. The immobilized l-LDH retained 80% of its initial activity in a batch reactor after 14 reuses.


Asunto(s)
Enzimas Inmovilizadas , L-Lactato Deshidrogenasa , Porcinos , Animales , Enzimas Inmovilizadas/metabolismo , Estabilidad de Enzimas , L-Lactato Deshidrogenasa/metabolismo , Dióxido de Silicio , Glutaral , Concentración de Iones de Hidrógeno , Temperatura , Lactatos , Cinética
12.
J Appl Oral Sci ; 29: e20210180, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34614123

RESUMEN

OBJECTIVE: Our study compared the effects of injectable platelet-rich fibrin (i-PRF) with those of corticosteroids in the treatment of erosive oral lichen planus (EOLP). METHODOLOGY: This split-mouth study included 24 individuals diagnosed histopathologically with bilateral EOLP. One bilateral lesion was injected with i-PRF, whereas the other was injected with methylprednisolone acetate in four sessions at 15-day intervals. Visual analog scale (VAS) for pain and satisfaction, oral health impact profile scale-14, and the lesion size were used. RESULTS: The intragroup comparisons showed a significant decrease in VAS-pain and lesion size in both the i-PRF group (from 81.88±17.74 to 13.33±18.34, and from 4.79±0.41 to 1.88±1.08, respectively) and the corticosteroid group (from 80.21±17.35 to 23.33±26.81, and from 4.71±0.46 to 2.21±1.35, respectively) in the 6th month compared to baseline (p<0.001). Moreover, VAS-satisfaction increased significantly in both the i-PRF group (from 26.67±17.8 to 85.63±16.24) and the corticosteroid group (from 28.33±17.05 to 74.38±24.11) in the 6th month compared to baseline (p<0.001). However, no significant difference in any value occurred in the intergroup comparisons. CONCLUSION: In patients with EOLP, both methods decreased pain and lesion size similarly, and both increased satisfaction. Therefore, the use of i-PRF may be considered an option in cases refractory to topical corticosteroid therapy. Biochemical and histopathological studies are required to reveal the mechanism of i-PRF action in EOLP treatment.


Asunto(s)
Liquen Plano Oral , Fibrina Rica en Plaquetas , Humanos , Liquen Plano Oral/tratamiento farmacológico
13.
Orphanet J Rare Dis ; 16(1): 402, 2021 09 28.
Artículo en Inglés | MEDLINE | ID: mdl-34583726

RESUMEN

BACKGROUND: The diagnosis of the rare genetic diseases has great importance in treating multisystemic conditions, preventing potential complications, and estimating disease risk for family members. The duration of obtaining genetic test results is varies. The demand to learn the diagnosis of a possible untreatable illness involves a struggle between uncertainty and a lifetime chronic disease. The current uncertainty of their child's condition and the long wait for a diagnosis may increase the parents' anxiety level and cause difficulties in the continuation of diagnostic procedures in some families. This study aimed to investigate the prediagnosis and postdiagnosis anxiety levels of parents who have a child with a rare genetic disease. METHOD: The parents in this study, mothers or fathers, admitted their children to the Bezmialem Vakif University Medical Genetics Clinic due to a suspected rare genetic disease (n = 40). Researchers created "The Sociodemographic Questionnaire" and used it to analyze the parents' sociodemographic status. In addition, they used the State-Trait Anxiety Inventory (STAI) to determine the anxiety levels of the parents. RESULTS: The state anxiety levels of parents decreased significantly after learning the diagnosis. However, there was no statistically significant decrease observed in trait anxiety levels. CONCLUSION: Data from this study revealed that informing parents about their child's disease and properly explaining to them the expected difficulties might help to reduce their anxiety levels. Psychological support for parents is necessary to reduce their long-term stress, thus increasing the patient's compliance with treatment.


Asunto(s)
Ansiedad , Padres , Ansiedad/diagnóstico , Niño , Femenino , Humanos , Madres , Enfermedades Raras/diagnóstico , Enfermedades Raras/genética , Encuestas y Cuestionarios
14.
J Pediatr Endocrinol Metab ; 34(6): 727-732, 2021 Jun 25.
Artículo en Inglés | MEDLINE | ID: mdl-33823105

RESUMEN

OBJECTIVES: It is unclear whether body weight status (underweight/normal weight/overweight/obese) is associated with allergic disease. Our objective was to investigate the relationship between body weight status (body mass index; BMI) and atopic allergic disease in prepubertal children, and to compare children with atopic allergic diseases with non atopic healthy children. METHODS: A prospective cross sectional study of 707 prepubertal children aged 3-10 years was performed; the participants were 278 atopic children with physician-diagnosed allergic disease (allergic rhinitis and asthma) (serum total IgE level >100 kU/l and eosinophilia >4%, or positivity to at least one allergen in skin test) and 429 non atopic healthy age- and sex-matched controls. Data were collected between December 2019 and November 2020 at the Pediatric General and Pediatric Allergy Outpatient Clinics of Bezmialem Vakif University Hospital. RESULTS: Underweight was observed in 11.6% of all participants (10.8% of atopic children, 12.2% of healthy controls), and obesity in 14.9% of all participants (18.0% of atopic children, 12.8% of controls). Obese (OR 1.71; 95% CI: 1.08-2.71, p=0.021), and overweight status (OR 1.62; 95% CI: 1.06-2.50, p=0.026) were associated with an increased risk of atopic allergic disease compared to normal weight in pre-pubertal children. This association did not differ by gender. There was no relationship between underweight status and atopic allergic disease (OR 1.03; 95% CI: 0.63-1.68, p=0.894). CONCLUSIONS: Overweight and obesity were associated with an increased risk of atopic allergic disease compared to normal weight among middle-income and high-income pre pubertal children living in Istanbul.


Asunto(s)
Dermatitis Atópica/etiología , Hipersensibilidad/etiología , Obesidad/complicaciones , Sobrepeso/complicaciones , Estudios de Casos y Controles , Niño , Preescolar , Estudios Transversales , Dermatitis Atópica/patología , Femenino , Estudios de Seguimiento , Humanos , Hipersensibilidad/patología , Masculino , Pronóstico , Estudios Prospectivos , Pubertad , Factores de Riesgo
15.
Enzyme Microb Technol ; 144: 109739, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33541574

RESUMEN

Lipase from Rhizomucor miehei (RML) was covalently immobilized on different supports, two silica gels and two carbon nanotube samples, using two different strategies. RML was immobilized on 3-carboxypropyl silica gel (RML@Si-COOH) and multi-wall carbon nanotubes containing carboxylic acid functionalities (RML@MCNT-COOH) using a two-step carbodiimide activation/immobilization reaction. Moreover, the enzyme was also immobilized on 3-aminopropyl silica (RML@Si-Glu) and single-wall carbon nanotubes functionalized with 3-APTES and activated with glutaraldehyde (RML@SCNT-Glu). Before and after RML immobilization, the structurel properties of supports were characterized and compared in detail. After immobilization, the expressed activities were 36.9, 90.2, 16.9, and 26.1 % for RML@Si-COOH, RML@Si-Glu, RML@MCNT-COOH, and RML@SCNT-Glu, respectively. The kinetic parameters of free and immobilized RML samples were determined for three substrates, p-nitrophenyl acetate, p-nitrophenyl butyrate and p-nitrophenyl palmitate, and RML@Si-Glu showed higher catalytic efficiency than the other immobilized RML samples. RML@Si-COOH, RML@Si-Glu, RML@MCNT-COOH, and RML@SCNT-Glu exhibited 5.8, 7.6, 4.2 and 4.6 folds longer half-life values than those of the free enzyme at pH 7.5 and 40 °C. Recyclability studies showed that all the immobilized RML biocatalysts retained over 90 % of their initial activities after ten cycles in the hydrolysis of p-nitrophenyl butyrate.


Asunto(s)
Nanotubos de Carbono , Rhizomucor , Enzimas Inmovilizadas , Lipasa , Silicatos
16.
Jt Dis Relat Surg ; 32(1): 129-136, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33463428

RESUMEN

OBJECTIVES: This study aims to compare the outcomes of isolated anterior cruciate ligament (ACL) reconstruction and combined anterolateral ligament (ALL) suture tape augmentation (STA) and ACL reconstruction after a minimum follow-up of two years. PATIENTS AND METHODS: This retrospective study included 63 patients (36 males, 27 females; mean age 27.8±4.0; range, 19 to 35 years) who had unilateral ACL injury and participated in pivoting sports and were randomly assigned to undergo either isolated ACL reconstruction (Group 1, n=33) or combined ACL reconstruction and ALL STA (Group 2, n=30) between January 2015 and February 2018. The presence of an associated meniscal injury, chondral pathology, contralateral ACL rupture, and residual pivot shift; subjective and objective International Knee Documentation Committee scores; Cincinnati and Lysholm functional scores; KT-1000 measurements; and graft rupture rate were evaluated. RESULTS: Patients were followed for a minimum of two years. The groups did not differ with respect to age, sex, side, time from injury to surgery, postoperative follow-up time, ACL graft size, contralateral ACL rupture, graft size, partial meniscectomy, chondral pathology or preoperative physical examination results. A total of 9.1% of the patients in Group 1 and 0% of those in Group 2 presented postoperative positive pivot shift (p=0.357). The graft failure rate was 6.06% (n=2) in Group 1 and 0% in Group 2 (p=0.270). In the final evaluation, compared with Group 1, Group 2 showed better anteroposterior clinical stability, as evaluated by KT-1000 arthrometry (p=0.006). Although better results were observed in Group 2, the clinical evaluation results for postoperative function did not differ significantly between groups. CONCLUSION: Combined ALL STA and ACL reconstruction was found to be effective in improving subjective and objective outcomes. Nevertheless, these findings were not significantly superior to those of isolated ACL reconstruction with hamstring grafts, except for the side-to-side differential anterior laxity testing results.


Asunto(s)
Lesiones del Ligamento Cruzado Anterior/cirugía , Reconstrucción del Ligamento Cruzado Anterior/métodos , Técnicas de Sutura , Adulto , Femenino , Estudios de Seguimiento , Humanos , Ligamentos/cirugía , Masculino , Rango del Movimiento Articular , Estudios Retrospectivos , Suturas , Resultado del Tratamiento , Adulto Joven
17.
Foot Ankle Int ; 42(1): 69-75, 2021 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32880199

RESUMEN

BACKGROUND: Chronic heel pain with plantar fasciitis is relatively common and can affect adults of all ages regardless of an active or sedentary lifestyle. The purpose of the present study was to evaluate the effectiveness of corticosteroid injection (CSI), extracorporeal shock wave therapy (ESWT), and radiofrequency thermal lesioning (RTL) treatments in chronic plantar heel pain that has been unresponsive to other conservative treatments. METHODS: We retrospectively analyzed the results of 217 patients treated with CSI (n = 73), ESWT (n = 75), and RTL (n = 69). The treatment efficacy and pain intensity, as measured using the visual analog scale, were recorded and compared at the 6-month follow-up. RESULTS: Pain intensity decreased significantly in all patients. However, it decreased significantly more in the CSI and RTL groups than in the ESWT group (P < .001). Age, sex, body mass index, calcaneal spur presence, and symptom duration were similar among 3 groups (P > .05). No complications were noted after the CSI, ESWT, or RTL sessions. CONCLUSION: CSI, ESWT, and RTL successfully treated chronic plantar heel pain that did not respond to other conservative treatments; however, CSI and RTL yielded better therapeutic outcomes. LEVEL OF EVIDENCE: Level III, retrospective comparative study.


Asunto(s)
Corticoesteroides/uso terapéutico , Tratamiento con Ondas de Choque Extracorpóreas/métodos , Fascitis Plantar/terapia , Adulto , Espolón Calcáneo/fisiopatología , Ondas de Choque de Alta Energía/uso terapéutico , Humanos , Inyecciones , Dimensión del Dolor , Estudios Retrospectivos , Resultado del Tratamiento , Escala Visual Analógica
18.
J. appl. oral sci ; 29: e20210180, 2021. tab, graf
Artículo en Inglés | LILACS | ID: biblio-1340111

RESUMEN

Abstract Objective Our study compared the effects of injectable platelet-rich fibrin (i-PRF) with those of corticosteroids in the treatment of erosive oral lichen planus (EOLP). Methodology This split-mouth study included 24 individuals diagnosed histopathologically with bilateral EOLP. One bilateral lesion was injected with i-PRF, whereas the other was injected with methylprednisolone acetate in four sessions at 15-day intervals. Visual analog scale (VAS) for pain and satisfaction, oral health impact profile scale-14, and the lesion size were used. Results The intragroup comparisons showed a significant decrease in VAS-pain and lesion size in both the i-PRF group (from 81.88±17.74 to 13.33±18.34, and from 4.79±0.41 to 1.88±1.08, respectively) and the corticosteroid group (from 80.21±17.35 to 23.33±26.81, and from 4.71±0.46 to 2.21±1.35, respectively) in the 6th month compared to baseline (p<0.001). Moreover, VAS-satisfaction increased significantly in both the i-PRF group (from 26.67±17.8 to 85.63±16.24) and the corticosteroid group (from 28.33±17.05 to 74.38±24.11) in the 6th month compared to baseline (p<0.001). However, no significant difference in any value occurred in the intergroup comparisons. Conclusion In patients with EOLP, both methods decreased pain and lesion size similarly, and both increased satisfaction. Therefore, the use of i-PRF may be considered an option in cases refractory to topical corticosteroid therapy. Biochemical and histopathological studies are required to reveal the mechanism of i-PRF action in EOLP treatment.


Asunto(s)
Humanos , Liquen Plano Oral/tratamiento farmacológico , Fibrina Rica en Plaquetas
19.
J Comput Assist Tomogr ; 44(6): 956-968, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33196603

RESUMEN

PURPOSE: The aim of the study was to search relationships between language lateralization and corpus callosum (CC) connectivity, tumor grade, and tumors distance to language-eloquent areas in glial neoplasms. MATERIALS AND METHODS: The functional magnetic resonance imaging and CC diffusion tensor imaging (DTI) metrics of 42 patients with glial neoplasm were evaluated for relationships of language lateralization (left, right, and bilateral) with CC DTI metrics (tracts number, voxel, volume, length, fractional anisotropy [FA], and apparent diffusion coefficient), tumor grade, and tumors distance to language-eloquent areas and relationships of CC DTI metrics with tumor grade. Kruskal-Wallis, Mann-Whitney U, and χ tests were used. All were repeated in 26 patients with left hemispheric masses. RESULTS: In glial masses, language bilateralism was more common than normal population and more pronounced in low grade than high grade. In right lateralism and bilateralism, tumor settlement nearby language-eloquent areas was more common. In the left lateralism, highest CC tract number, higher tumor grade, and more remote tumor settlements were noted. There was no relationship between CC DTI metrics and tumor grade but increase in CC tracts number and FA with increasing tumor grade. CONCLUSIONS: Increased bilateralism in glial masses than normal population and in low grade tumors than high grade and increased nearby tumor settlement in right lateralism and bilateralism support interhemispheric reorganization and plasticity. This is more pronounced in low grade because of higher life span. Highest CC tract number, higher tumor grade, and more remote tumor settlement in left lateralized group suggest intact CC integrity with limited hemispheric destruction. Increasing CC tracts number and FA with increasing tumor grade support preserved CC integrity in the shorter life span of high-grade tumors.


Asunto(s)
Neoplasias Encefálicas/diagnóstico por imagen , Neoplasias Encefálicas/patología , Cuerpo Calloso/diagnóstico por imagen , Cuerpo Calloso/patología , Imagen de Difusión Tensora/métodos , Glioma/diagnóstico por imagen , Glioma/patología , Adolescente , Adulto , Mapeo Encefálico/métodos , Neoplasias Encefálicas/fisiopatología , Cuerpo Calloso/fisiopatología , Femenino , Glioma/fisiopatología , Humanos , Lenguaje , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Cuidados Preoperatorios/métodos , Estudios Retrospectivos , Adulto Joven
20.
Turk Pediatri Ars ; 55(3): 270-276, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33061755

RESUMEN

AIM: Atopic dermatitis is a chronic, itchy, inflammatory skin disease that progresses with exacerbations. This study was planned to determine how atopic dermatitis affects the quality of life of patients and their families. MATERIAL AND METHODS: One hundred twenty patients with atopic dermatitis, as diagnosed using the Hanifin Rajka diagnostic criteria, and their families were included in the study. The patients were divided into two groups as active and remission. Disease severity was classified as mild, moderate, and severe according to the SCORAD index. Total IgE, peripheral eosinophil counts, and allergy skin tests were performed. Literate patients completed the Childrens' Dermatology Life Quality Index by themselves. The Infants' Dermatology Life Quality Index was completed by their families. Also, the Family Dermatological Quality of Life Index was completed by one of the parents for each patient. RESULTS: Among the 120 patients who participated in the study, 76 (63.33%) were male and 44 (36.66%) were female. The mean age was 4.36±3.52 years. The quality of life survey scores were statistically significantly lower in the remission group compared with the active group (p<0.05). The quality of life questionnaire scores were higher in the group with a severe SCORAD index (p<0.05). There was no significant correlation between total IgE, peripheral eosinophil count, skin test results, and questionnaire scores (p>0.05). At least one allergen susceptibility was detected in 65% of the patients who underwent allergy skin tests. CONCLUSION: Quality of life was affected negatively in patients with atopic dermatitis and their families. In this study, the quality of life survey results were found to be higher in the active group and the group with a high SCORAD index compared with the remission group and the group with a low SCORAD index. Based on this finding, we can conclude that quality of life is negatively affected by high disease activity.

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