Makale Koleksiyonu

Usefulness of novel Martin/Hopkins and Sampson equations over Friedewald equation in cardiology outpatients: A CVSCORE-TR substudy

2023-01-28T12:17:26Z

Usefulness of novel Martin/Hopkins and Sampson equations over Friedewald equation in cardiology outpatients: A CVSCORE-TR substudy Dinç Asarcıklı, Lale; Kış, Mehmet; Güvenç, Tolga Sinan; Tosun, Veysel; Acar, Burak; Avcı Demir, Fulya; Zoghi, Mehdi Background and aims The Friedewald equation (LDL-Cf) is known to produce inaccurate estimations of low-density lipoprotein cholesterol (LDL-C) when triglycerides are high (>400 mg/dL) or LDL-C is low (<70 mg/dL). The Martin/Hopkins (LDL-Cmh) and Sampson (LDL-Cs) equations were developed to overcome these limitations, but few data are available to assess whether these equations offer incremental usefulness over LDL-Cf. Our aim was to understand whether there was any incremental usefulness of novel equations on decisions regarding patient management. Methods Four thousand one hundred and ninety-six cardiology patients who were included in a multicentre registry database were analysed. Each patient was assigned to a cardiovascular risk class using the SCORE (Systematic COronary Risk Evaluation) algorithm, and relevant European guidelines were used to assess LDL-C targets. Results Compared with LDL-Cmh and LDL-Cs, LDL-Cf was able to correctly identify 96.9%-98.08% of patients as within or outside the LDL-C target, respectively, and 1.95%-2.8% of patients were falsely identified as being within the LDL-C target. Kappa coefficients for agreement between LDL-Cf vs LDL-Cmh and LDL-Cf vs LDL-Cs were 0.868 and 0.918 (P < .001). For patients not on cholesterol-lowering drugs, the decision to initiate treatment would be different in 1.2%-1.8% of cases if LDL-Cs or LDL-Cmh were used, respectively. For those already on cholesterol-lowering drugs, decisions regarding treatment intensification would be different in 1.5%-2.4% of cases if LDL-Cs or LDL-Cmh were used. Conclusions In most cardiology outpatients, the Friedewald equation has excellent agreement with the novel Martin/Hopkins and Sampson equations, and treatment decisions should not change in most patients.

The effects on oxidative DNA damage of laparoscopic gastric band applications in morbidly obese patients

2023-01-28T12:23:31Z

The effects on oxidative DNA damage of laparoscopic gastric band applications in morbidly obese patients Kocael, Ahmet; Erman, Hayriye; Zengin, Kagan; Kocael, Pınar Çiğdem Arica; Korkmaz, Gülcan Güntaş; Gelisgen, Remise; Uzun, Hafize Background: Obesity may induce oxidative stress, causing oxidative damage of DNA. We examined associations between decreasing serum and urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels and weight loss in morbidly obese patients before and 6 months after laparoscopic adjustable gastric banding (LAGB). Methods: We compared patients who had surgery for morbid obesity with healthy, nonobese controls. Urine and fasting blood samples were collected once from the controls and from the morbidly obese patients before and 6 months after the LAGB. The serum and urinary 8-OHdG levels were evaluated in these groups using an enzyme-linked immunosorbent assay kit. Results: We included 20 patients who had surgery for morbid obesity (8 men, 12 women, mean body mass index [BMI] 46.82 +/- 4.47) and 20 healthy, nonobese people (10 men, 10 women, mean BMI 22.52 +/- 2.08) in our study. There was no significant difference in serum 8-OHdG levels between the groups, whereas urinary 8-OHdG levels were significantly higher in morbidly obese patients than in controls. Weight, BMI and serum and urinary 8-OHdG levels were significantly decreased in morbidly obese patients 6 months after LAGB. Conclusion: The LAGB provides efficient weight loss in patients with morbid obesity. The systemic oxidative DNA damage was increased by the morbid obesity, but this increase was not related to weight gain, and it was more evident in serum than urine samples. After LAGB for morbid obesity, the oxidative DNA damage declined both in serum and urine.

Melatonin ameliorates oxidative damage in hyperglycemia-induced liver injury

2023-01-28T12:17:17Z

Melatonin ameliorates oxidative damage in hyperglycemia-induced liver injury Korkmaz, Gülcan Güntaş; Uzun, Hafize; Cakatay, Ufuk; Aydın, Seval Purpose: Melatonin (N-acetyl-5-methoxy-tryptamine) is synthesized mainly by the pineal gland and its antioxidant properties have been demonstrated both in short and long term studies. Our aim was to clarify the effects of hyperglycemia and to administer melatonin on lipid peroxidation, protein oxidation and oxidative DNA damage in rat. Methods: Malondialdehyde (MDA), protein carbonyl (PCO) and total thiol (T-SH) levels were determined in plasma and liver tissue, glutathione (GSH) levels in erythrocyte and liver tissue, and 8-hydroxy-2-deoxyguanosine (8-OHdG) levels in plasma and liver. Thirty-eight male Wistar rats were divided into four groups: 1 - injected with saline (n = 8), 2 - injected with melatonin (n = 10), 3 - injected with STZ (65 mg/kg, i.p.) (diabetic group) (n = 10) and 4 - injected with melatonin (10 mg/kg/day, i.p.) and STZ (65 mg/kg, i.p.) (n = 10) for 8 weeks (diabetic + melatonin group). Colorimetric methods were used to determine the level of the oxidative stress markers. 8-OhdGwas measured using ELISA. Results: MDA, PCO and 8-OHdG levels in the plasma and the liver homogenates of diabetic rats were higher than controls and were significantly reduced after melatonin treatment. T-SH and GSH levels in samples were markedly reduced in untreated diabetic rats compared with control rats; however, these parameters were increased in diabetic rats following melatonin treatment. Conclusion: Our findings showed that melatonin administration partially ameliorated oxidative damage in liver injury in STZ-induced diabetic rats. The present study suggests that melatonin functions as a potent antioxidant agent in diabetes. Melatonin, a nutritional supplement, may be a good therapeutic option for diabetic patients.

Effect of pharyngeal packing during nasal surgery on postoperative nausea and vomiting

2023-01-28T12:23:29Z

Effect of pharyngeal packing during nasal surgery on postoperative nausea and vomiting Korkut, Arzu Yasemin; Erkalp, Kerem; Erden, Veysel; Teker, Ayşenur Meriç; Demirel, Asiye; Gedikli, Orhan; Saidoğlu, Leyla OBJECTIVE: The aim of this study was to evaluate the efficacy of pharyngeal packing in reducing postoperative nausea and vomiting (PONV) after nasal surgery by taking into consideration the surgery types. STUDY DESIGN: A prospective, randomized, controlled trial. SETTING: A tertiary referral center. SUBJECTS AND METHODS: After the study was approved by the local ethics committee, this study was conducted in the Otorhinolaryngology clinic with the collaboration of the Anesthesiology clinic. The development of PONV within 24 hours after surgery was evaluated in patients who were applied a pharyngeal pack (Group 1) or not (Group 2) during nasal surgery. RESULTS: There were 104 adult patients for routine nasal surgery included in the current study, yielding 100 (group 1, n = 50; group 2, n = 50) evaluable subjects. No significant difference was found in the incidence of PONV between the two groups at two (P = 0.41), four (P = 0.54), eight (P = 0.51), and 24 hours. According to surgery type, the incidence of PONV after two hours was 71 percent in septorhinoplasty, 68 percent in endoscopic sinus surgery, and 50 percent in septoplasty; after four hours it was 59 percent in septorhinoplasty, 53 percent in endoscopic sinus surgery, and 37 percent in septoplasty; and after eight hours it was 35 percent in septorhinoplasty, 39 percent in endoscopic sinus surgery, and 21 percent in septoplasty. PONV was not seen at 24 hours. Compared to the septoplasty group for which pharyngeal packing was used, significantly lower rates of PONV at four and eight hours were found in the septoplasty group in which pharyngeal packing was not used (P = 0.02). CONCLUSION: Pharyngeal packing in nasal surgery has no impact on PONV. Copyright (C) 2010 American Academy of Otolaryngology-Head and Neck Surgery Foundation. Published by Mosby, Inc. All rights reserved.