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1.
Food Chem Toxicol ; 89: 1-7, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-26747977

RESUMEN

3-monochloropropane-1,2-diol (3-MCPD) is a food contaminant that occurs during industrial production processes and can be found mainly in fat and salt containing products. 3-MCPD has exhibited mutagenic activity in vitro but not in vivo, however, a genotoxic mechanism for the occurrence of kidney tumors has not so far been excluded. The main pathway of mammalian 3-MCPD metabolism is via the formation of ß--chlorolactatic acid and formation of glycidol has been demonstrated in bacterial metabolism. The aim of this study was to investigate genotoxic and oxidative DNA damaging effects of 3-MCPD and its metabolites, and to provide a better understanding of their roles in DNA repair processes. DNA damage was assessed by alkaline comet assay in target rat kidney epithelial cell lines (NRK-52E) and human embryonic kidney cells (HEK-293). Purine and pyrimidine base damage, H2O2 sensitivity and DNA repair capacity were assessed via modified comet assay. The results revealed in vitro evidence for increased genotoxicity and H2O2 sensitivity. No association was found between oxidative DNA damage and DNA repair capacity with the exception of glycidol treatment at 20 µg/mL. These findings provide further insights into the mechanisms underlying the in vitro genotoxic potential of 3-MCPD and metabolites.


Asunto(s)
Daño del ADN , Reparación del ADN , alfa-Clorhidrina/farmacología , Animales , Línea Celular , Ensayo Cometa , Humanos , Técnicas In Vitro , Ratas , alfa-Clorhidrina/metabolismo
3.
Spine (Phila Pa 1976) ; 40(13): E787-93, 2015 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-25785958

RESUMEN

STUDY DESIGN: This is a cross-sectional descriptive study. OBJECTIVE: The purposes of this study are to describe normative data of the sagittal plane in the sitting position within the pediatric population and document the evolution of sagittal alignment during the growth. SUMMARY OF BACKGROUND DATA: Surgical procedures addressing the deformity aim to make the maximal correction on the coronal and transverse planes and to restore the physiological curves on the sagittal plane. Prerequisite for sagittal plane reconstruction is to know the physiological values. METHODS: Children between 3 and 17 years of age, followed by pediatrics unit for nonskeleton disease with lateral radiographs of the entire spine and pelvis on sitting positions, were included to the study. Children with history of surgery or disease that may affect spine development were excluded. Children were evaluated in 4 age groups (3-6, 7-9, 10-12, and 13-17 yr) in terms of spinal sagittal alignment on sitting position. RESULTS: Of the screened, 124 children (49 girls, 75 boys) were included. Descriptive statistics of all possible segmental angles were summarized. Thoracic kyphosis and lumbar lordosis values were lower on sitting position than on standing position. Thoracic segmental angulations steadily increased from T1-T2 to midthoracic segments and then decreased in caudal direction. Moreover, lumbar segmental angulations steadily increased in cephalocaudal direction. Sacral slope, L4-S1 angulation, and T1-T12 and T1-S1 distance tend to increase as the age increases. CONCLUSION: Sagittal spinal alignment in the sitting position is different than that in the standing position and it changes as the child grows. There is a statistically significant difference between different age groups, especially at the cervicothoracic, thoracolumbar, and lumbosacral junctions. These findings should be taken into consideration for young nonambulatory patients who require spinal instrumentation and/or fusion. LEVEL OF EVIDENCE: 2.


Asunto(s)
Desarrollo del Adolescente , Desarrollo Infantil , Vértebras Lumbares/crecimiento & desarrollo , Pelvis/crecimiento & desarrollo , Postura , Vértebras Torácicas/crecimiento & desarrollo , Adolescente , Factores de Edad , Niño , Preescolar , Estudios Transversales , Femenino , Humanos , Cifosis/fisiopatología , Lordosis/fisiopatología , Vértebras Lumbares/diagnóstico por imagen , Masculino , Pelvis/diagnóstico por imagen , Radiografía , Vértebras Torácicas/diagnóstico por imagen
4.
Int J Med Sci ; 11(5): 494-9, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24688314

RESUMEN

AIM: Discussing a protocol involving xylene-ethanol deparaffinization on slides followed by a kit-based extraction that allows for the extraction of high quality DNA from FFPE tissues. METHODS: DNA was extracted from the FFPE tissues of 16 randomly selected blocks. Methods involving deparaffinization on slides or tubes, enzyme digestion overnight or for 72 hours and isolation using phenol chloroform method or a silica-based commercial kit were compared in terms of yields, concentrations and the amplifiability. RESULTS: The highest yield of DNA was produced from the samples that were deparaffinized on slides, digested for 72 hours and isolated with a commercial kit. Samples isolated with the phenol-chloroform method produced DNA of lower purity than the samples that were purified with kit. The samples isolated with the commercial kit resulted in better PCR amplification. CONCLUSION: Silica-based commercial kits and deparaffinized on slides should be considered for DNA extraction from FFPE.


Asunto(s)
ADN de Neoplasias/genética , ADN de Neoplasias/aislamiento & purificación , Neoplasias/genética , Cloroformo , Formaldehído/química , Humanos , Adhesión en Parafina/métodos
5.
Turk Kardiyol Dern Ars ; 41(5): 406-17, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23917006

RESUMEN

OBJECTIVES: This study was designed to assess the safety, compliance and efficacy of amlodipine (Aml) and valsartan (Val) single-pill combination (SPC) in a large hypertensive patient population. STUDY DESIGN: This is a non-interventional, observational, open label study conducted in 166 centers in Turkey with a 24-week follow-up period. RESULTS: Of the 1184 enrolled patients, two-thirds were female (62.2%). The mean age was 57.7±11.3 years, and 26.1% of the patients were older than 65 years. The majority of patients (82.3%) were overweight or obese. During the course of the study, 150 (12.7%) patients experienced a total of 174 adverse events (AEs). The overall mean (SD) compliance rate was determined to be 96.9 (0.2)%. The most commonly reported AE was edema, with a new-onset edema incidence of 6.7%. In the entire group, Aml/Val SPC significantly reduced both systolic and diastolic blood pressure (BP), with a reduction of 29.6±0.9 / 14.7±0.6 mmHg (for each, p<0.001). CONCLUSION: As a result of the low incidences of AEs and new-onset edema, the safety profile of Aml/Val SPC proved to be optimal. Aml/Val SPC reduced BP efficiently and met the needs of most patients to achieve the targets. Aml/Val SPC seems to be a beneficial option for effective BP control, which is a key factor influencing cardiovascular outcome.


Asunto(s)
Amlodipino/administración & dosificación , Antihipertensivos/administración & dosificación , Hipertensión/tratamiento farmacológico , Tetrazoles/administración & dosificación , Valina/análogos & derivados , Administración Oral , Anciano , Amlodipino/efectos adversos , Antihipertensivos/efectos adversos , Combinación de Medicamentos , Femenino , Humanos , Hipertensión/fisiopatología , Masculino , Persona de Mediana Edad , Cooperación del Paciente , Tetrazoles/efectos adversos , Resultado del Tratamiento , Turquia , Valina/administración & dosificación , Valina/efectos adversos , Valsartán
6.
J Clin Hypertens (Greenwich) ; 15(3): 193-200, 2013 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23458592

RESUMEN

Many hypertensive patients require ≥2 drugs to achieve blood pressure targets. This study aims to review and analyze the clinical studies conducted with dual or triple combination of angiotensin II receptor blockers (ARBs), calcium channel blockers (CCBs), and diuretics. Medical literature between January 1990 and April 2012 was reviewed systematically and data from eligible studies were abstracted. Data were analyzed using random-effects models. Of the 224 studies screened, 7563 eligible patients from 11 studies were included. Triple combinations of ARBs (olmesartan or valsartan), CCBs (amlodipine), and diuretics (hydrochlorothiazide) at any dose provided more blood pressure reduction in office and 24-hour ambulatory measurements than any dual combination of these molecules (P<.0001 for both). Significantly more patients achieved blood pressure targets with triple combinations (odds ratio, 2.16; P<.0001). Triple combinations did not increase adverse event risk (odds ratio, 0.96; P=.426). Triple combinations at any dose seem to decrease blood pressure more effectively than dual combination of the same molecules without any remarkable risk elevation for adverse events. Further prospective studies evaluating the efficacy and safety of triple combinations, especially in the form of single pills, are required.


Asunto(s)
Antagonistas de Receptores de Angiotensina/uso terapéutico , Antihipertensivos/uso terapéutico , Presión Sanguínea/efectos de los fármacos , Bloqueadores de los Canales de Calcio/uso terapéutico , Diuréticos/uso terapéutico , Hipertensión/tratamiento farmacológico , Antagonistas de Receptores de Angiotensina/administración & dosificación , Antagonistas de Receptores de Angiotensina/efectos adversos , Antihipertensivos/administración & dosificación , Antihipertensivos/efectos adversos , Bloqueadores de los Canales de Calcio/administración & dosificación , Bloqueadores de los Canales de Calcio/efectos adversos , Diuréticos/administración & dosificación , Diuréticos/efectos adversos , Quimioterapia Combinada , Humanos , Resultado del Tratamiento
7.
J Plast Reconstr Aesthet Surg ; 63(4): 705-10, 2010 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19246271

RESUMEN

Proanthocyanidins are potent natural antioxidants which belong to a class of polyphenols. Proanthocyanidin-rich extracts are prepared from grape seeds. The effect of grape seed proanthocyanidin extract (GSPE) on the viability of abdominal skin flaps exposed to warm ischaemia and subsequent reperfusion were studied in 40 male Wistar rats. In the control group (group I; n=20), rats were fed with standard, non-purified rat diet, and the study group received GSPE 100 mgkg(-1) per day 1 week prior to surgery and 1 week following surgery. Abdominal island flaps were elevated in both the groups and subjected to 8h of warm ischaemia, followed by reperfusion. Mean flap survival areas in groups I (control group) and II (treatment group) were calculated to be 58.3%+/-11.72 and 81.0%+/-11.88, respectively. Flap survival on day 7 was significantly higher in group II compared to group I (p<0.01). Histopathological semi-quantitative analysis of the specimens revealed infiltration by polymorphonuclear leucocytes, oedema formation and necrosis in group I, whereas neo-vascularisation and fibrosis were the prominent findings in group II.


Asunto(s)
Antioxidantes/uso terapéutico , Extracto de Semillas de Uva/uso terapéutico , Neovascularización Fisiológica/efectos de los fármacos , Daño por Reperfusión/prevención & control , Trasplante de Piel/efectos adversos , Colgajos Quirúrgicos/efectos adversos , Animales , Modelos Animales de Enfermedad , Estudios de Seguimiento , Supervivencia de Injerto/efectos de los fármacos , Masculino , Proantocianidinas/uso terapéutico , Ratas , Ratas Wistar , Daño por Reperfusión/etiología , Daño por Reperfusión/patología , Trasplante de Piel/patología , Colgajos Quirúrgicos/irrigación sanguínea , Resultado del Tratamiento
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