Background: The aim of this study was to examine the cardiac effects of anthracycline therapy based on speckle-tracking echocardiography (STE) and to identify patients at risk for cardiotoxicity. Patients and Methods: The study included 35 breast cancer (BC) and 15 lymphoma patients who were treated with anthracycline-based chemotherapy. Conventional echocardiography and STE were performed 1 month prior to and 1 month after chemotherapy. Longitudinal strain analysis was performed via STE using automated functional imaging. Results: The ejection fraction (EF) and the fractional shortening values were significantly lower in the lymphoma group. There was a positive correlation between anthracycline dose and subclinical heart failure (p = 0.024). There was an increase in the myocardial performance index in both groups. After therapy, STE showed regional decreases in the longitudinal strain values in the BC group, but the global strain values did not differ. In the lymphoma group, the apical long-axis, the 4-chamber, and the global longitudinal strain values were significantly lower after therapy (p = 0.002, 0.041, and 0.004, respectively). The long-axis and global longitudinal strain values were significantly lower in the lymphoma patients with normal EF values (p = 0.01 and 0.05, respectively). Conclusion: Cardiotoxicity during the early phase of anthracycline treatment can be detected via STE prior to the observation of systolic function deterioration.
Insulin-secreting pancreatic tumors and insulin-like growth hormone-secreting non-islet cell tumors can cause hypoglycemia. However, insulin-releasing paraganglioma or pheochromocytoma has almost never been reported. A 67-year-old female patient was admitted to our hospital because of headache, palpitation, perspiration, faintness, frequent sense of hunger and absent-mindedness. These intermittent symptoms had begun approximately a year before admission. On physical examination, she had high blood pressure of 150/90 mm Hg. Hormonal studies demonstrated increased urinary norepinephrine levels, and hyperinsulinemic hypoglycemia was confirmed while the patient was symptomatic. Abdominal MRI revealed a retroperitoneal mass measuring 4.5 cm in the pancreatic region. She was treated with an alpha-blocking agent to control blood pressure preceding the removal of the mass. Histopathological diagnosis was paraganglioma, and immunohistochemically insulin staining in the neoplastic cells was demonstrated. Her blood pressure normalized and hypoglycemia relieved after the operation. The patient did not have recurrence of hypoglycemia after a year of follow-up. Paraganglioma is a rare tumor of the neural crest, and co-secretion of insulin and catecholamines has been reported only by a single case report in the literature. The present patient is another case with this co-secretion.
Cardiovascular problems are a major cause of morbidity and mortality in patients with autosomal dominant polycystic kidney disease (ADPKD). Endothelial dysfunction (ED), which is an early manifestation of vascular injury, has been shown in patients with ADPKD. However, the association between ambulatory blood pressure and ED has not been investigated in these patients. Forty-one patients with ADPKD having well-preserved renal function were included in the study. Ambulatory blood pressure monitoring was performed in all patients. Patients were divided into dipper and non-dipper groups. Endothelial function of the brachial artery was evaluated by using high-resolution vascular ultrasound. Endothelial-dependent dilatation was expressed as the percentage change in the brachial artery diameter from baseline to reactive hyperemia. The mean 24-hour systolic blood pressure was similar in both groups (125.5 ± 10.7 mmHg in dippers and 121.2 ± 14.3 in non-dippers, p > 0.05). There was also no significant difference between the mean 24-hour diastolic blood pressures in both groups (82.3 ± 9.6 mmHg in dippers and 77.1 ± 8.6 mmHg in non-dippers, p > 0.05). The nocturnal fall rate in systolic blood pressure was 11.1 ± 1.2% in dippers and 0.98 ± 0.9% in non-dippers (p = 0.001). The nocturnal fall rate in diastolic blood pressure was 14.0 ± 0.9% in dippers and 3.8 ± 0.8% in non-dippers (p = 0.001). Endothelial-dependent dilatation was significantly higher in dippers compared to non-dippers (6.22 ± 4.14% versus 3.57 ± 2.52%, p = 0.025). Non-dipper patients with ADPKD show significant ED, which has an important impact on cardiovascular morbidity and mortality.
IntroductionApproxiamately 70-80% of patients receiving chemotherapy experience nausea and/or vomiting. However, emesis, nausea and vomiting significantly affect patients quality of life and can lead to poor compliance with further treatment. They can also cause metabolic imbalances, nutrient depletion, anorexia, decline of the patient's performance status and even withdrawal from curative anticancer treatment. There are several factors affecting the severity and incidence of emesis and vomiting, including type of chemotherapy, dosage, schedule and even individual patient variability (1-3).Vomiting is triggered by impulses to the vomiting center from the chemoreceptor trigger zone, pharynx, gastrointestinal tract and cerebral kortex. The principal neuroreceptors involved in emetic response are dopamine and the seratonin receptors. The others are, corticosteroid, histamine, cannabinoid, acetylcholine and neurokinin-1 (NK-1) receptors. Antiemetics can block different neuronal pathways and exert their effects at different points during emesis course (4).Aprepitant (AP) is a selective NK-1 receptor blocker that blocks the binding of substance -P at the NK-1 receptor in the central nervous system. It differs from the other antiemetics by augmenting the antiemetic activity of the 5-HT3-receptor anatagonists and dexamethasone to inhibit both acute and delayed cisplatin-induced emesis. However, most of the studies, including two phase III studies evaluated the efficieny of aprepitant by self-diary reports and reported only the incidence and severity of emesis. It is also commonly claimed that the nausea and vomiting accompanying cytotoxic chemotherapy have a negative impact on quality of life but there is little empirical data demonstrating that the failure to control postchemotherapy emesis affects aspects of quality of life other than directly related physical symptoms (5, 6). ABSTRACTObjective: Functional Living Index Emesis (FLIE) is developed to evaluate the relationship between emesis and it's effects on patient's daily life and is far more relevant to detect the effectiveness of antiemetic treatment compared with self-diary reports. In this study, the efficacy of oral neurokinin-1 antagonist aprepitant on the prevention of chemotherapy-induced nausea and vomiting and quality of life is evaluated with FLIE.Study Design: Cross sectional study. Material and Methods:Sixty patients with Non-Small Cell Lung Cancer (NSCLC) receiving a chemotherapy regimen consisting of Cisplatin and Docetaxel were evaluated. The patients were prospectively randomized to two groups before the first cycle of chemotherapy. Patients in Group A (31 patients) received 3 daily doses of aprepitant along with oral ondansetron and dexamethasone. The patients in group B (29 patients) received only ondansetron and dexamathasone. The efficacy of both regimens was evaluated by a modified Turkish version of FLIE scale consisting of 18 questions. Results:The number of patients with complete response was 31 in the whole group. Of these 18 patients (58%...
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