The Effect of Taxifolin on Cisplatin-Induced Pulmonary Damage in Rats: A Biochemical and Histopathological Evaluation.

The effect of taxifolin on cisplatin-induced oxidative pulmonary damage was investigated biochemically and histopathologically in male albino Wistar rats. There were four groups, with six animals in each group: 50 mg/kg of taxifolin plus 2.5 mg/kg of cisplatin (TC) group, 2.5 mg/kg of cisplatin only (CIS) group, 50 mg/kg of taxifolin only (TG) group, and a healthy control group (HG). In terms of the experimental procedure, the animals in the TC and TG groups were first treated via oral gavage. The CIS and HG groups received distilled water as solvent, respectively. One hour later, the TC and CIS groups received cisplatin at a dose of 2.5 mg/kg (injected intraperitoneally). Taxifolin, cisplatin, and the distilled water were administered at the indicated dose and volume, using the same method daily for 14 d. At the end of this period, the animals were killed with a high dosage of thiopental anaesthesia (50 mg/kg). Blood and lung tissue samples were taken for biochemical (malondialdehyde (MDA), myeloperoxidase (MPO), total glutathione (tGSH), and 8-hydroxy-2 deoxyguanosine (8-OHdG)) analyses and histopathological examinations. The biochemical and histopathological results in the TC and HG groups were then compared with those in the CIS group. Cisplatin increased the levels of MDA, myeloperoxidase, and 8-OHdG, a marker of oxidative DNA damage, and reduced the amount of tGSH in the lung tissue. Moreover, severe alveolar damage, including oedema and extensive alveolar septal fibrosis, in addition to infiltration of polymorphic nuclear leucocytes and haemorrhagic foci, was observed in the CIS group. These histopathological findings demonstrate that taxifolin provides protection against pulmonary oxidative stress by preventing increases in oxidant parameters and decreases in antioxidants.

Pulmonary Physician Consultancy in Emergency Services in Turkiye (PuPCEST) - a cross-sectional multicenter study.

Pulmonology is one of the branches that frequently receive consultation requests from the emergency department. Pulmonology consultation (PC) is requested from almost all clinical branches due to the diagnosis and treatment of any respiratory condition, preoperative evaluation, or postoperative pulmonary problems. The aim of our study was to describe the profile of the pulmonology consultations received from emergency departments in Turkiye. A total of 32 centers from Turkiye (the PuPCEST Study Group) were included to the study. The demographic, clinical, laboratory and radiological data of the consulted cases were examined. The final result of the consultation and the justification of the consultation by the consulting pulmonologist were recorded. We identified 1712 patients, 64% of which applied to the emergency department by themselves and 41.4% were women. Eighty-five percent of the patients had a previously diagnosed disease. Dyspnea was the reason for consultation in 34.7% of the cases. The leading radiological finding was consolidation (13%). Exacerbation of preexisting lung disease was present in 39% of patients. The most commonly established diagnoses by pulmonologists were chronic obstructive pulmonary disease (19%) and pneumonia (12%). While 35% of the patients were discharged, 35% were interned into the chest diseases ward. The majority of patients were hospitalized and treated conservatively. It may be suggested that most of the applications would be evaluated in the pulmonology outpatient clinic which may result in a decrease in emergency department visits/consultations. Thus, improvements in the reorganization of the pulmonology outpatient clinics and follow-up visits may positively contribute emergency admission rates.

The role of polymorphonuclear leukocytes in distant organ (lung) oxidative damage of liver ischemia/reperfusion and the protective effect of rutin.

BACKGROUND: Ischemia/reperfusion (I/R) can cause damage to distant organs. Rutin is known to have antioxidant and anti-inflammatory properties, and inhibits cytokine and polymorphonuclear leukocyte (PMNL) infiltration. It may prevent the development of reperfusion injury. OBJECTIVES: This study aimed to examine the role of PMNLs in distant organ (lung) injury after a liver I/R procedure, and to evaluate the protective effects of rutin in rats using biochemical and immunohistochemical methods. MATERIAL AND METHODS: In this study, 18 Wistar albino male rats (255-275 g) were used. Experimental animals were divided into 3 groups: a liver I/R (LIR) group, a 50 mg/kg rutin+liver I/R (RLIR) group and a sham operation (SG) control group. Experimental results obtained from the RLIR group were compared with the LIR and SG groups. RESULTS: Blood malondialdehyde (MDA) levels in the RLIR and SG groups were significantly lower compared to the LIR group (p < 0.001). Blood myeloperoxidase (MPO) activity in the RLIR and SG groups was significantly lower compared to the LIR group (p < 0.001). Total glutathione (tGSH) levels in the RLIR and SG groups were significantly higher compared to the LIR group (p < 0.001). CONCLUSIONS: Rutin can be used to prevent distant organ (lung) damage due to liver I/R. However, more extensive studies are needed on this issue.

COVID-19 is more dangerous for older people and its severity is increasing: a case-control study.

Coronavirus disease 2019 (COVID-19) triggers important changes in routine blood tests. In this retrospective case-control study, biochemical, hematological and inflammatory biomarkers between March 10, 2020, and November 30, 2020 from 3969 COVID-19 patients (3746 in the non-intensive care unit (non-ICU) group and 223 in the ICU group) were analyzed by dividing into three groups as spring, summer and autumn. In the non-ICU group, lymphocyte to monocyte ratio was lower in autumn than the other two seasons and neutrophil to lymphocyte ratio was higher in autumn than the other two seasons. Also, monocyte and platelet were higher in spring than autumn; and eosinophil, hematocrit, hemoglobin, lymphocyte, and red blood cells decreased from spring to autumn. In the non-ICU group, alanine aminotransferase and gamma-glutamyltransferase gradually increased from spring to autumn, while albumin, alkaline phosphatase, calcium, total bilirubin and total protein gradually decreased. Additionally, C-reactive protein was higher in autumn than the other seasons, erythrocyte sedimentation rate was higher in autumn than summer. The changes in routine blood biomarkers in COVID-19 varied from the emergence of the disease until now. Also, the timely changes of blood biomarkers were mostly more negative, indicating that the disease progresses severely. The study was approved by the Erzincan Binali Yildirim University Non-interventional Clinical Trials Ethic Committee (approval No. 86041) on June 21, 2021.

Oxidative and pro-inflammatory lung injury induced by desflurane inhalation in rats and the protective effect of rutin.

BACKGROUND: Desflurane is a mainstay of general inhaled anesthetics with a methyl ethyl ether structure and is widely used in clinical practice. It has been reported to induce inflammation and lipid peroxidation in rat pulmonary parenchyma, to increase alveolar macrophages, and to cause peribronchial infiltration and edema. Rutin, a flavonoid vitamin P1, is known to have biological properties including acting as an antioxidant, an anti-inflammatory, and an inhibitor of bronchoalveolar polymorphonuclear leukocyte (PNL) infiltration. OBJECTIVES: The aim of this study is to examine the effects of rutin on desflurane-induced pulmonary injury using biochemical and histopathological methods. MATERIAL AND METHODS: The rats were divided into 3 groups (n = 6 each): healthy control (HC), rutin+desflurane-treated (DRT) and desflurane-only (DSF). Briefly, 50 mg/kg of rutin was given orally to the DRT group and an equal volume of normal saline was given to the DSF and HC groups. After 1 h, anesthesia was induced and maintained in the DRT and DSF groups for 2 h. After the rats had been sacrificed, the lungs were removed. Malondialdehyde (MDA), total glutathione (GSH), tumor necrosis factor alpha (TNF-α), and nuclear factor kappa B (NF-κB) levels were measured in the excised lung tissue. The removed tissues were also fixed in 10% formalin, and the obtained sections were stained with hematoxylin and eosin (H&E) and evaluated under light microscopy. The biochemical and histopathological results of the DRT group were compared with those obtained from the DSF and HC groups. RESULTS: Desflurane increased MDA, TNF-α and NF-κB, and decreased GSH in lung tissue. The PNL infiltration, alveolar macrophages, hemorrhage, alveolar damage, and edema were observed in the lung tissue of the DSF group. Rutin was histopathologically shown to protect lung tissue from oxidative stress by preventing an increase in oxidant parameters and a decrease in antioxidants. CONCLUSIONS: The results suggest that rutin may be useful in the treatment of desflurane-associated lung injury.