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81.
82.

Introduction

The role of angiogenesis in the pathogenesis of systemic sclerosis (SSc) is well known. The imbalance between vascular endothelial growth factor (VEGF) and their anti-angiogenic soluble receptors (sVEGFR-1 and VEGFR-2) has been proposed as a possible cause of microangiopathy.

Aim of the work

To determine the levels of VEGF, sVEGFR-1 and sVEGFR-2 and the VEGF/sVEGFR1 and VEGF/sVEGFR2 ratios in SSc patients and to study their relation with clinical manifestations and capillaroscopy findings.

Patients and methods

The study included 44 SSc patients and 44 controls. The sclerosis severity was assessed by the modified Rodnan skin score (mRss) and capillaroscopy performed in patients. Serum VEGF, sVEGFR-1 and sVEGFR-2 were measured in patients and control.

Results

SSc patients had a mean age of 40.7 ± 12.8 years, M:F (1:9) and disease duration was 56.2 ± 60.6 months. 27 patients (61.4%) had diffuse-SSc and 17 (38.6%) limited. The mean VEGF was significantly higher (363.4 ± 133.9 pg/ml) and sVEGFR-2 lower (2039.6 ± 109 pg/ml) in patients compared to control (93.9 ± 25.2 pg/ml and 2366 ± 116.5 pg/ml; p = 0.05 and p = 0.04, respectively). Serum levels of sVEGFR-2 in patients with early, active and nonspecific scleroderma pattern of capillaroscopy was higher in comparison to patients with late scleroderma pattern (p = 0.05). There were no significant differences in the studied parameters between those patients with and without digital ulcerations and interstitial pulmonary fibrosis. A significant correlation was found between mRss and VEGF (p = 0.04).

Conclusion

An overproduction of VEGF, a potent angiogenic molecule or down regulated production of its natural inhibitors (sVEGFR-2) might be involved in the development of vasculopathy in SSc patients.  相似文献   
83.

Purpose

To compare patient quality of life (QoL) and short-term surgical outcomes between robotic anterior resection (r-AR) and laparoscopic (l-AR) approach.

Methods

Consecutive patients having undergone either robotic or laparoscopic AR for adenocarcinoma were studied. All operations were performed by two surgeons experienced in laparoscopic and recently introduced robotic surgery. Surgical outcomes were determined by post-operative histology and short-term complications. QoL was prospectively assessed using the EORTC QLC-CR30 and QLC-CR29 questionnaires.

Results

In total, 36 patients (18 r-AR) with a median follow-up of 12 months following surgery (9-month robotic and 20-month laparoscopic) were studied. The two groups were similarly matched for age and gender. Laparoscopic patients had a lower ASA grade (p = 0.02). There was no significant difference in surgical outcomes between groups. r-AR patients reported lower pain scales (2 ± 6 vs. 11 ± 13) (p = 0.04), lower levels of insomnia 0 vs. 8 ± 15 (p = 0.04) and a lower abdominal pain scale (2 ± 9 vs. 17 ± 27) (p = 0.04). Male impotence scores were higher in l-AR 33 ± 35 compared to r-AR 7 ± 21 (p = 0.03).

Conclusion

Despite its recent introduction to our centre, the quality of oncological resection using the robotic surgery is comparable to laparoscopy. Lower impotence and QoL scores in patients after robotic procedure may be explained on the basis of better visualisation and precise tissue handling.
  相似文献   
84.
Although doxorubicin (DOX) is among the most widely used anticancer agents, its clinical application is hampered owing to its cardiotoxicity. Adjuvant therapy with an antioxidant has been suggested as a promising strategy to reduce DOX-induced adverse effects. In this context, many phenolic compounds have been reported to protect against DOX-induced cardiotoxicity. The cardioprotective effects of phenolic compounds are exerted via multiple mechanisms including inhibition of reactive oxygen species generation, apoptosis, NF-κB, p53, mitochondrial dysfunction, and DNA damage. In this review, we present a summary of the in vitro, in vivo, and clinical findings on the protective mechanisms of phenolic compounds against DOX-induced cardiotoxicity.  相似文献   
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86.
In this study, we investigated the effects of some denaturants, such as urea and heat, on structure and function of rabbit polyclonal antibody and its Fab fragments. Thermal unfolding studies by circular dichroism of antibody and Fab fragments showed that in acidic pH, antibody has multi-transitions whereas Fab fragments have one transition curve; however in neutral pH, thermal unfolding of both had one transition. Effects of urea on the structure of antibody and Fab were studied through fluorescence spectroscopy. Despite exposure of protein to high concentration of denaturant, partial unfolding occurred in both antibody and Fab, but the denaturation of Fab was more considerable than that of antibody. Functional studies indicated that urea and heat causes a decrease in affinity in both antibody and Fab, but deactivation of Fab is more considerable in comparison with the antibody molecule. Turbidity study of antibody and Fab showed that aggregation of Fab occurred at lower temperatures than that of antibody. Our results indicate that Fab has higher sensitivity in comparison with antibody in the unfolding, deactivation, and aggregation processes. Therefore, our data proposes a stabilizing role for Fc.  相似文献   
87.
ABSTRACT

Background: Pectoralis major ruptures are increasing in incidence primarily due to an increase in awareness, activity level among young males between 20 and 40 years of age, and use of anabolic steroids. Although the majority of pectoralis major ruptures are acute injuries, many chronic ruptures are unrecognized and it is imperative to understand the proper evaluation of these injuries, as well as the appropriate treatment for acute and chronic ruptures.

Purpose: Pectoralis major ruptures can lead to deformity and physical disability if left untreated. This review paper discusses both acute and chronic ruptures as well as indications for nonoperative treatment and operative treatment to give the reader the best understanding of this diagnosis and proper management.

Methods: A systematic review of the literature was performed using a search of electronic databases. Search terms such as pectoralis major rupture, pectoralis major repair, pectoralis major tendon transfer, and pectoralis major nonoperative treatment were used. Case reports, systematic reviews, prospective and retrospective studies were included to provide a comprehensive review. The only exclusion criteria consisted of studies not published in English. This review article includes the anatomy and biomechanics of the pectoralis major muscle, proper evaluation of the patient, operative and nonoperative treatment of acute and chronic pectoralis major ruptures, and outcomes of the recommended treatment.

Conclusion: Nonoperative treatment is indicated for patients with medical comorbidities, older age, incomplete tears, or irreparable damage. Patients treated non-operatively have been shown to lose strength, but regain full range of motion. Patients with surgery before 6 weeks reported better outcomes than patients with surgery between 6 and 8 weeks. The chronicity of the rupture (>8 weeks) increases the likelihood of reconstruction, involving the use of autografts or allografts. Patients treated with delayed repair had significantly better strength, satisfaction, and outcomes than patients with nonoperative treatment. The pectoralis tendon can also be transferred in patients with rotators cuff tears, atrophy, or significant functional limitation. Tendon transfers have been shown to have unpredictable outcomes, but overall satisfactory results.  相似文献   
88.
Journal of Public Health - The role of socioeconomic status (SES) of patients in health care outcomes has been investigated in many health care systems. The health care literature suggests that...  相似文献   
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