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1.
Turk J Gastroenterol ; 33(9): 743-750, 2022 09.
Artículo en Inglés | MEDLINE | ID: mdl-35946875

RESUMEN

BACKGROUND: Although studies are investigating the perception and beliefs about treatment and adherence to treatment in different societies related to inflammatory bowel disease, there are no studies on this subject in Turkish people with different sociocultural structures. In our study, we aimed to evaluate the beliefs about treatment and its effect on adherence to treatment in the Turkish population with inflammatory bowel disease. METHODS: In the study, the "Medication Adherence Report Scale" and "Beliefs about Medicines Scale" scales were used to evaluate the treatment compliance and perception and beliefs about treatment. Characteristics that could affect treatment compliance were evaluated by statistical analysis. RESULTS: A total of 253 patients, 167 with ulcerative colitis and 86 with Crohn's disease, were included in the study. The non-adherence rate to the treatment was found as 41.9% in ulcerative colitis and 24.4% in Crohn's disease (P = .006). Intentional (29.3% in ulcerative colitis and 16.3% in Crohn's disease [P = .031] and unintentional non-adherence to treatment (28.1% in ulcerative colitis, 16.3% in Crohn's disease [P = .037] were significantly higher in ulcerative colitis than in Crohn's disease. Female gender (odds ratio = 2.59, P = .005), low education level (odds ratio = 4.8, P = .015), distal involvement in ulcerative colitis (P = .014), and thoughts about the disease would last too soon in Crohn's disease (odds ratio = 4.17, P = .049) were risk factors for non-adherence to treatment. CONCLUSION: The negative perception of treatment in inflammatory bowel disease affects adherence to the treatment. Considering some social factors that affect adherence to the treatment and taking measures to enhance the adherence to treatment will increase the success of treatment.


Asunto(s)
Colitis Ulcerosa , Enfermedad de Crohn , Enfermedades Inflamatorias del Intestino , Colitis Ulcerosa/tratamiento farmacológico , Enfermedad de Crohn/tratamiento farmacológico , Femenino , Humanos , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Enfermedades Inflamatorias del Intestino/epidemiología , Oportunidad Relativa , Factores de Riesgo
2.
Turk J Gastroenterol ; 33(5): 406-413, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35678798

RESUMEN

BACKGROUND: Patients with Crohn's disease experience major deterioration in work productivity and quality of life. We aimed to provide the long-term effects of anti-tumor necrosis factor agents on work productivity and activity impairment and quality of life in patients with Crohn's disease using the Inflammatory Bowel Disease Questionnaire and the Short-Form Health Survey-36. METHODS: Patients with Crohn's disease and initiated an anti-tumor necrosis factor treatment were included and followed up for 12 months in this observational study. RESULTS: A total of 106 patients were included in this study, and 64.2% of the patients were males. Mean [± standard deviation] age was 36.8 [± 10.9] years. At baseline, mostly perianal fistulas [65.7%] were observed [n = 23]. Intestinal stenosis was detected in 34.9% of the patients [n = 37], and most of the stenosis was located in the ileum [70.6%] followed by the colon [20.6%]. Extraintestinal symp- toms were observed in 24 patients [22.6%]. Most frequent extraintestinal symptom was arthritis with 71.4% [n = 15]. Mean time from first symptom to initiation of anti-tumor necrosis factor treatment was 6.3 [± 5.0] years. Improvements in work productivity and activ- ity impairment scores throughout 12 months were -24.1% [P = .003] for work time missed, -18.0% [P = .006] for impairment at work, -8.5% [P = .160] for overall work impairment, and -17.0% [P < .001] for daily activity impairment. Similarly, significant improvements [P < .001] were detected in all components of the Inflammatory Bowel Disease Questionnaire when compared to baseline. Statistically sig- nificant improvements [P < .05] were detected for all components of Short-Form Health Survey-36 except for mental health [P = .095]. CONCLUSION: Our study indicates the significant improvement in work productivity and activity impairment and quality of life of patients with Crohn's disease who receive long-term anti-tumor necrosis factor treatment.


Asunto(s)
Enfermedad de Crohn , Constricción Patológica , Enfermedad de Crohn/tratamiento farmacológico , Enfermedad de Crohn/psicología , Femenino , Humanos , Masculino , Calidad de Vida , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa , Turquía
3.
Turk J Gastroenterol ; 32(6): 488-492, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-34405814

RESUMEN

The COVID-19 pandemic, caused by the novel severe acute respiratory syndrome coronavirus 2, has resulted in high mortality and morbidity worldwide and is still a growing problem. Inflammatory bowel disease (IBD) is a chronic inflammatory disease for which a substantial number of patients are treated with immunosuppressive medications, either occasionally or long-term. Despite the accumulating evidence, there is still a lack of knowledge about the impact of COVID-19 on IBD patients, especially those who are under immunosuppressive treatment. Moreover, following the emergence of several COVID vaccines, there are concerns regarding vaccine effectiveness and possible side effects in such patients. In this context, we tried to briefly summarize the accumulating evidence and recommendations for the management of IBD in the context of the COVID-19 pandemic.


Asunto(s)
COVID-19/inmunología , Huésped Inmunocomprometido , Inmunosupresores/uso terapéutico , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Enfermedades Inflamatorias del Intestino/inmunología , COVID-19/diagnóstico , COVID-19/terapia , Vacunas contra la COVID-19/inmunología , Esquema de Medicación , Humanos , Enfermedades Inflamatorias del Intestino/complicaciones , Pronóstico , Factores de Riesgo , Privación de Tratamiento
4.
Arab J Gastroenterol ; 21(1): 32-36, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32088164

RESUMEN

BACKGROUND AND STUDY AIMS: Cirrhosis is a multisystem disorder characterized by hyperdynamic circulation which can progress to multiple organ dysfunctions. Recent studies have demonstrated autonomic dysfunction and cirrhotic cardiomyopathy including diastolic dysfunction, systolic dysfunction with electrophysiologic abnormalities in patients with cirrhosis. Due to the long and complicated course of the disease, health related quality of life is affected. We aimed to evaluate the frequency of diastolic dysfunction and autonomic dysfunction in cirrhosis, and the effects on health-related quality of life. PATIENTS AND METHODS: Hundred cirrhotic patients were enrolled in the study. According to the Child-Pugh classification 35 patients were of Child A, 36 of Child B and 29 of Child C. The proportion of autonomic dysfunction was 52%, and diastolic dysfunction 51%. Autonomic dysfunction was diagnosed using bedside maneuvers and tests; diastolic dysfunction was diagnosed using the E/A ratio in echocardiographic findings. Health-related quality of life measurements was obtained from an SF-36 questionnaire. RESULTS: Patients with advanced Child-Pugh classifications were found to have significantly lower health-related quality of life values (p < 0.05). Likewise, health-related quality of life values were observed to be significantly lower in patients with autonomic dysfunction (p < 0.05). No significant difference was found in health related quality of life measurements between patients with and without diastolic dysfunction. CONCLUSION: Our study showed that autonomic dysfunction and diastolic dysfunction are found in patients with cirrhosis. Further studies are needed to assess the effects of autonomic dysfunction and diastolic dysfunction on health-related quality of life.


Asunto(s)
Enfermedades del Sistema Nervioso Autónomo/epidemiología , Cardiomiopatías/epidemiología , Cirrosis Hepática/complicaciones , Cirrosis Hepática/fisiopatología , Calidad de Vida , Anciano , Enfermedades del Sistema Nervioso Autónomo/diagnóstico , Enfermedades del Sistema Nervioso Autónomo/psicología , Presión Sanguínea , Cardiomiopatías/diagnóstico , Cardiomiopatías/psicología , Estudios de Cohortes , Femenino , Frecuencia Cardíaca , Humanos , Cirrosis Hepática/psicología , Masculino , Persona de Mediana Edad , Turquía
6.
Turk J Gastroenterol ; 27(6): 525-536, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27852544

RESUMEN

BACKGROUND/AIMS: Inflammatory bowel diseases are chronic, relapsing, inflammatory conditions. They have a genetic backround resulting in patient susceptibility. The aim of our study is to investigate the involvement of IL23R, JAK2, and STAT3 polymorphisms in inflammatory bowel diseases in a Turkish population. MATERIALS AND METHODS: Polymorphisms in IL23R (rs11209026), JAK2 (rs10758669), and STAT3 (rs3816769, rs2293152, rs744166, rs957970, rs8074524) were genotyped in 69 Crohn's disease patients, 157 ulcerative colitis patients, and 89 healthy controls. RESULTS: The presence of (C) in rs10758669, (T) and (TT) in rs957970, and (TT) in rs744166 were found to increase the susceptibility to Crohn's disease (p=0.049, p=0.016, p=0.010, p=0.035, respectively), while rs2293152 (GC), rs744166 (CT), and rs957970 (CT) provide protection against Crohn's disease (p=0.007, p=0.043, p=0.043, respectively). While rs2293152 (GC) was protective, rs2293152 (CC) increased the susceptibility to ulcerative colitis (p=0.009, p=0.001). All the polymorphisms were associated with age-at-diagnosis, except rs11209026. Furthermore, rs2293152 was associated with an extension in ulcerative colitis, while rs10758669, rs3816769, rs744166, rs2293152, and rs957970 were associated with the subphenotype in Crohn's disease. The presence of rs10758669 (AC) was protective against perianal Crohn's disease (p=0.016). Additionally, rs10758669 and rs2293152 in Crohn's disease and rs8074524, rs3816769, and rs10758669 in ulcerative colitis were associated with the requirement of immunsuppression. Finally, rs8074524 and rs10758669 in Crohn's disease and rs11209026 in ulcerative colitis were associated with disease-related operation. CONCLUSION: This is the first study of the single marker association of IL23R, JAK2, and STAT3 polymorphisms with ulcerative colitis and Crohn's disease in a Turkish population. It was demonstrated that these polymorphisms may be effective in the etiology of inflammatory bowel disease in this Turkish population.


Asunto(s)
Colitis Ulcerosa/genética , Enfermedad de Crohn/genética , Janus Quinasa 2/genética , Receptores de Interleucina/genética , Factor de Transcripción STAT3/genética , Adulto , Edad de Inicio , Alelos , Estudios de Casos y Controles , Colitis Ulcerosa/tratamiento farmacológico , Colitis Ulcerosa/cirugía , Enfermedad de Crohn/tratamiento farmacológico , Enfermedad de Crohn/cirugía , Epistasis Genética , Femenino , Predisposición Genética a la Enfermedad/genética , Genotipo , Humanos , Inmunosupresores/uso terapéutico , Masculino , Persona de Mediana Edad , Fenotipo , Polimorfismo de Nucleótido Simple , Factores Protectores , Factores de Riesgo , Turquía
7.
Clin Res Hepatol Gastroenterol ; 39(4): 489-98, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25744728

RESUMEN

BACKGROUND AND OBJECTIVE: Inflammatory bowel disease is a group of chronic inflammatory conditions affecting gastrointestinal tract. Lots of genes have been identified resulting in susceptibility to inflammatory bowel disease. Any polymorphism leading to functional modifications in tyrosine kinase-2 may precipitate excessive immune response in the intestinal mucosa. The aim of our study is to investigate the involvement of tyrosine kinase-2 polymorphisms in the patients with inflammatory bowel disease in Turkish population. METHODS: Four single nucleotide polymorphisms in tyrosine kinase-2 (rs280523, rs2304256, rs280519 and rs280496) were genotyped in 60 Crohn's disease, 151 ulcerative colitis patients and 89 unrelated healthy controls. These polymorphisms were detected by real-time polymerase chain reaction. RESULTS: The presence of genotype (CC) in rs2304256 and (AA) in rs280519 were found to increase the susceptibility to ulcerative colitis (P=0.024, 0.025, respectively). rs2304256 (CA) and rs280519 (AG) have provided protection against ulcerative colitis (P=0.021, 0.012, respectively). rs280519 (AG) was protective against Crohn's disease (P=0.045). rs2304256 (CC) increased the susceptibility to inflammatory Crohn's disease (P=0.014). The presence of rs2304256 (A) increased the susceptibility to perianal Crohn's disease (P=0.03). Both rs280519 and rs2304256 polymorphisms were associated with the requirement of corticosteroid and immunosuppressive therapy in ulcerative colitis. CONCLUSION: This study is the first demonstration of the single marker association of tyrosine kinase-2 polymorphisms with ulcerative colitis and Crohn's disease in Turkish population. They may be effective in the etiology of inflammatory bowel disease in our population. Disparity between our study and others may be related to ethnic differences.


Asunto(s)
Colitis Ulcerosa/genética , Enfermedad de Crohn/genética , Polimorfismo de Nucleótido Simple , TYK2 Quinasa/genética , Adulto , Anciano , Estudios de Casos y Controles , Femenino , Predisposición Genética a la Enfermedad , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Reacción en Cadena en Tiempo Real de la Polimerasa , Turquía , Adulto Joven
8.
Dermatol Surg ; 39(12): 1758-66, 2013 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-23941624

RESUMEN

BACKGROUND: Cosmetic procedures are growing ever more common, and the use of soft tissue fillers is increasing. Practicing physicians need to be aware of the biological behavior of these products in tissue to enable them to respond to any safety concerns that their patients raise. OBJECTIVES: To provide an overview of the metabolism of 1,4-butanediol diglycidyl ether (BDDE)-crosslinked hyaluronic acid (HA) dermal fillers and to examine the safety of the resulting byproducts. METHODS: A review of available evidence was conducted. RESULTS: After reaction with HA, the epoxide groups of BDDE are neutralized, and only trace amounts of unreacted BDDE remain in the product (<2 parts per million). When crosslinked HA, uncrosslinked HA, and unreacted BDDE degrade, they break down into harmless byproducts or into byproducts that are identical to substances already found in the skin. CONCLUSION: Clinical and biocompatibility data from longer than 15 years support the favorable clinical safety profile of BDDE-crosslinked HA and its degradation products. Given the strength of the empirical evidence, physicians should be confident in offering these products to their patients.


Asunto(s)
Butileno Glicoles/metabolismo , Técnicas Cosméticas , Ácido Hialurónico/metabolismo , Envejecimiento de la Piel , Viscosuplementos/metabolismo , Animales , Materiales Biocompatibles/metabolismo , Reactivos de Enlaces Cruzados/metabolismo , Glicerol/metabolismo , Humanos , Rejuvenecimiento
9.
Ideggyogy Sz ; 66(11-12): 424-6, 2013 Nov 30.
Artículo en Inglés | MEDLINE | ID: mdl-24555244

RESUMEN

Ataxia and tremor are rare manifestations of hepatocerebral degeneration due to portovenous shunts. Ammonia is a neurotoxin that plays a significant role in the pathogenesis of hepatic encephalopathy. A 58-year old male patient was assessed with the complaints of gait disturbance, hand tremor, and impairment of speech. His neurological examination revealed dysarthric speech and ataxic gait. Bilateral kinetic tremor was noted, and deep tendon reflexes of the patient were hyperactive. Serum ammonia level was found to be 156.9 microg/dL. Cranial magnetic resonance (MR) imaging revealed increased signal intensity in bilateral globus pallidus on T1-weighted axial sections, and bilateral prominent hyperintense lesions in the middle cerebellar peduncles on T2-weighted axial sections. On his abdominal MR portography, multiple portohepatic venous collaterals were noted in the right and left lobes of liver parenchyma in 2D FIESTA axial MR sections. To our knowledge, we reported the first case of acquired hepatocerebral degeneration presenting with cerebral symptoms without any hepatic findings in which clinical improvement was noted, and hyperammonemia disappeared following medical treatment.


Asunto(s)
Fístula Arteriovenosa/complicaciones , Fístula Arteriovenosa/diagnóstico , Encéfalo/patología , Degeneración Hepatolenticular/diagnóstico , Degeneración Hepatolenticular/etiología , Hiperamonemia/complicaciones , Vena Porta/patología , Ataxia/etiología , Cerebelo/patología , Disartria/etiología , Globo Pálido/patología , Degeneración Hepatolenticular/complicaciones , Degeneración Hepatolenticular/patología , Degeneración Hepatolenticular/terapia , Humanos , Hiperamonemia/terapia , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Síndrome , Resultado del Tratamiento , Temblor/etiología
10.
Gastroenterol Res Pract ; 2012: 425079, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23097664

RESUMEN

Objective. In this study, we aimed to investigate the possible role of serum cytokines in the development of hepatic osteodystrophy. Matherial and Methods. 44 consecutive male cirrhotic patients (17 alcoholic, 20 hepatitis B, 7 hepatitis C), 15 age- and sex-matched chronic alcoholics without liver disease, and 17 age- and sex-matched healthy controls were included in the study during one year period. Bone mineral density was measured by dual X-ray absorptiometry in the lumbar vertebrate and femoral neck. Serum interleukin levels were measured by ELISA method. Results. Although osteopenia frequency between our cirrhotic patients was 20%, there was no difference in T-scores among the controls and other groups. Serum interleukin-1, interleukin-8, and tumor necrosis factor-alpha levels were not different between all groups. Serum interleukin-2 and interleukin-6 levels were higher in the cirrhotics than controls (P < 0.001). However, there were no significant difference between osteopenic and nonosteopenic cirrhotics. Conclusion. According to the results of the study in this small population of 44 male cirrhotic patients, frequency of hepatic osteopenia is small and serum interleukins 1, 2, 6, 8, and tumor necrosis factor-alpha may not play a role in the pathogenesis of hepatic osteodystrophy. Further studies in which large number of patients involved are necessary in this field.

11.
Turk J Haematol ; 29(2): 111-9, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24744641

RESUMEN

Inflammatory Bowel Disease (IBD) is a group of chronic and relapsing inflammatory disorders of the gastrointestinalsystem. In these cases, findings are detected in extraintestinal systems also. There is a tendency for thrombotic eventsin IBD, as in the other inflammatory processes. The pathogenesis of this thrombotic tendency is multidimensional,including lack of natural anticoagulants, prothrombotic media induced via the inflammatory process, long-termsedentary life style, steroid use, surgery, and catheter placement. The aim of this review was to highlight the positiverelationship between IBD and thrombotic events, and the proper treatment of at-risk patients.

14.
J Cosmet Laser Ther ; 13(1): 21-7, 2011 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21254807

RESUMEN

BACKGROUND: The lift capacity of a filler (ability to oppose deformation and flattening) relates to its suitability for correcting deeper wrinkles and folds, volumizing, and contouring. Lift capacity, considered as a function of both elastic modulus (G') and gel cohesivity, can be expected to differ among products owing to proprietary manufacturing processes. OBJECTIVES: To compare the lift capabilities of 24-mg/ml smooth, cohesive gel fillers (with ~6% and ~8% crosslinking) and a 20-mg/ml granular consistency gel filler (~2% crosslinking). METHODS: G' was measured using a parallel plate rheometer and the products were subjected to a small oscillatory strain. Cohesivity was measured using a linear compression test (quantitative) as well as a dye diffusion test (qualitative). RESULTS: The 24-mg/ml smooth, cohesive gel filler had a lower G' coupled with lower susceptibility to yield to a given strain versus the 20-mg/ml granular consistency gel filler. Both 24-mg/ml smooth, cohesive gel filler formulations demonstrated greater resistance to deformation in the linear compression test and lower rates of dye diffusion than the 20-mg/ml granular consistency gel filler. CONCLUSIONS: The 24-mg/ml smooth, cohesive HA gel fillers achieve a high lift capacity by combining higher cohesivity with lower relative G' versus the 20-mg/ml granular consistency gel filler.


Asunto(s)
Elasticidad , Geles , Ácido Hialurónico/química , Viscosidad , Reactivos de Enlaces Cruzados , Dureza , Reología
15.
Dermatol Surg ; 36 Suppl 3: 1886-92, 2010 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-20969666

RESUMEN

BACKGROUND: The new 20 mg/mL hyaluronic acid (HA) dermal filler is a smooth, highly cohesive, viscous formulation developed to restore volume in aesthetic facial rejuvenation. OBJECTIVE Evaluate clinical experience with 20 mg/mL HA dermal filler to date and comment on its current and potential uses within the facial rejuvenation treatment paradigm. METHODS AND MATERIALS: In this paper, the authors review the unique physical and chemical properties of 20 mg/mL HA dermal filler as well as clinical experience with the product to date. RESULTS: Overall, the 20 mg/mL smooth, cohesive, viscous HA filler was especially effective in restoring volume in the malar region and chin. Volume loss resolved significantly in patients in clinical trials(1) and treatment effects were observed to be maintained from six to 18 months.(2) Physicians reported the agent was highly effective as well as easy to inject, sculpt and mold. The treatment was generally well tolerated and no instances of product migration from the injection site have been reported. Patient satisfaction was high, with the vast majority of trial participants acknowledging they would return for additional treatment and recommend the treatment to friends.(1,2) CONCLUSION: Initial experience shows the 20 mg/mL smooth, cohesive, viscous HA filler to be a useful addition to the facial rejuvenation armamentarium when used both alone and in combination with BTX-A.


Asunto(s)
Cara , Ácido Hialurónico/administración & dosificación , Ritidoplastia/métodos , Envejecimiento de la Piel/efectos de los fármacos , Viscosuplementos/administración & dosificación , Femenino , Estudios de Seguimiento , Humanos , Inyecciones Intradérmicas , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Resultado del Tratamiento
18.
Dig Dis Sci ; 54(1): 103-10, 2009 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-18465229

RESUMEN

The outcome of Helicobacter pylori infection has been related to specific virulence-associated bacterial genotypes. The best known genotypic virulence factors of H. pylori are cytotoxin-associated gene A (cagA) and vacuolating cytotoxin gene A (vacA). The objective of this study was to assess the relationship between H. pylori cagA and vacA status and histopathological findings. Esophagogastrodoedonoscopy was performed in 80 dyspeptic patients. Antrum and corpus biopsies were obtained for isolation of H. pylori and for histopathological assessment. The polymerase chain reaction was used to detect cagA and vacA genes of H. pylori using specific primers. Biopsy samples were stained with hematoxylin and eosin, and histopathological findings were graded using the "updated Sydney system". H. pylori from 57 of the 80 patients was incubated. Of the 57 patients, 44 were cagA positive. In the corpus biopsy specimens there was a significant relationship between the density of H. pylori colonization (P = 0.02) and chronic inflammation (P = 0.02) and cagA-positive genotypes. In the antrum specimens there was a significant relationship between cagA positivity and neutrophil activity (P = 0.003) and glandular atrophy (P = 0.002), but not with H. pylori density, chronic inflammation, and intestinal metaplasia. The odds ratio of cagA-positive vs. cagA-negative strains for the presence of glandular atrophy, irrespective of grading and of gastric localization, was 4.62 (95% CI, 1.18-18.08, P = 0.041). No significant relationships were observed between vacA s1 and s2 genotypes and histopathological parameters. Corpus neutrophil infiltration was found to be more severe in the m1 group than in the m2 group (P = 0.004). Other histopathological features showed no difference between m1 and m2 genotypes. In conclusion H. pylori strains showing cagA positivity are associated with more severe gastritis in some histological features but virulence factors of H. pylori do not appear to determine the overall pattern of gastritis.


Asunto(s)
Antígenos Bacterianos/genética , Proteínas Bacterianas/genética , Gastritis/microbiología , Helicobacter pylori/patogenicidad , Factores de Virulencia/genética , Adulto , Anciano , Antígenos Bacterianos/metabolismo , Proteínas Bacterianas/metabolismo , Femenino , Mucosa Gástrica/metabolismo , Mucosa Gástrica/microbiología , Mucosa Gástrica/patología , Gastritis/metabolismo , Gastritis/patología , Genotipo , Infecciones por Helicobacter/complicaciones , Helicobacter pylori/genética , Helicobacter pylori/metabolismo , Humanos , Masculino , Persona de Mediana Edad , Antro Pilórico/metabolismo , Antro Pilórico/microbiología , Antro Pilórico/patología , Índice de Severidad de la Enfermedad , Turquía , Factores de Virulencia/metabolismo , Adulto Joven
19.
J Cosmet Laser Ther ; 10(1): 35-42, 2008 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-18330796

RESUMEN

BACKGROUND: The use of injectable materials for soft-tissue augmentation has been increasing in the United States, reflecting the introduction of new hyaluronic acid (HA)-based dermal fillers. HA dermal fillers vary widely in their physical and chemical characteristics and many variables contribute to their overall performance. This article explains the basic science of HA and describes how the physical properties of HA dermal fillers may influence clinical outcomes. HYALURONIC ACID: The chemical composition of disaccharide HA monomers, and how they form polymer chains and are crosslinked into gels for dermal fillers are described. HYALURONIC ACID DERMAL FILLERS: Key concepts and properties relevant to the production and performance of HA dermal fillers, such as the degree of crosslinking, gel hardness, gel consistency, viscosity, extrusion force, HA concentration, and extent of hydration are explained. New formulations of HA dermal fillers that have recently been approved by the US Food and Drug Administration differ from currently available HA fillers and may provide enhanced ease of extrusion and persistence over previous fillers. CONCLUSION: Knowledge of the chemical and physical blueprint of HA dermal fillers may help physicians in choosing the appropriate HA dermal filler for facial enhancements. This, together with appropriate injector training and injection experience, should lead to results that ultimately will benefit patients.


Asunto(s)
Materiales Biocompatibles/química , Técnicas Cosméticas , Ácido Hialurónico/química , Materiales Biocompatibles/uso terapéutico , Elasticidad , Humanos , Ácido Hialurónico/uso terapéutico , Tamaño de la Partícula , Polímeros/química , Rejuvenecimiento , Envejecimiento de la Piel , Viscosidad
20.
Turk J Gastroenterol ; 18(2): 82-8, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17602351

RESUMEN

BACKGROUND/AIMS: Inappropriate down regulation of an activated immune system is considered as the main pathogenetic mechanism in inflammatory bowel disease. Migration of circulating cells to a diseased intestine is considered as an important factor in the pathogenesis of inflammatory bowel disease. We aimed to evaluate some features of circulating immune cells in inflammatory bowel disease. METHODS: Twenty-two control, 29 Crohn's disease and 17 ulcerative colitis patients were studied. CD2, CD3, CD4, CD8, CD11b, CD11c, CD25, CD45RA, CD45RO, CD54 and HLA DR on the surface of peripheral blood lymphocytes and CD11b, CD11c, CD45RA and CD45RO on the phagocytes were researched with two-color immunofluorescence flow cytometry. RESULTS: The percentages of CD2+ and CD4+ lymphocytes were found significantly reduced in ulcerative colitis. CD3+ and CD8+ lymphocytes in inflammatory bowel disease were higher than in controls. CD45RA+ lymphocytes were found significantly decreased in ulcerative colitis and active Crohn's disease. CD45RO+ lymphocytes and CD45RO+, CD11b+ and CD11c+ phagocytes were significantly increased in Crohn's disease. CONCLUSIONS: We demonstrated that there were significant differences between ulcerative colitis and Crohn's disease in the expression of some important surface markers on the peripheral blood immune cells. It seems that circulating CD11b-CD11c and CD45RA-CD45RO expressing phagocytes are important in inflammatory bowel disease and may be useful in distinguishing Crohn's disease from ulcerative colitis. These findings may give us some clues about the immunopathogenesis of inflammatory bowel disease.


Asunto(s)
Antígenos CD/metabolismo , Enfermedades Inflamatorias del Intestino/inmunología , Enfermedades Inflamatorias del Intestino/metabolismo , Linfocitos/metabolismo , Adulto , Estudios de Casos y Controles , Femenino , Citometría de Flujo , Humanos , Recuento de Linfocitos , Masculino , Fagocitos/metabolismo
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