Dexamethasone versus methylprednisolone for multiple organ dysfunction in COVID-19 critically ill patients: a multicenter propensity score matching study.

BACKGROUND: Dexamethasone usually recommended for patients with severe coronavirus disease 2019 (COVID-19) to reduce short-term mortality. However, it is uncertain if another corticosteroid, such as methylprednisolone, may be utilized to obtain better clinical outcome. This study assessed dexamethasone's clinical and safety outcomes compared to methylprednisolone. METHODS: A multicenter, retrospective cohort study was conducted between March 01, 2020, and July 31, 2021. It included adult COVID-19 patients who were initiated on either dexamethasone or methylprednisolone therapy within 24 h of intensive care unit (ICU) admission. The primary outcome was the progression of multiple organ dysfunction score (MODS) on day three of ICU admission. Propensity score (PS) matching was used (1:3 ratio) based on the patient's age and MODS within 24 h of ICU admission. RESULTS: After Propensity Score (PS) matching, 264 patients were included; 198 received dexamethasone, while 66 patients received methylprednisolone within 24 h of ICU admission. In regression analysis, patients who received methylprednisolone had a higher MODS on day three of ICU admission than those who received dexamethasone (beta coefficient: 0.17 (95% CI 0.02, 0.32), P = 0.03). Moreover, hospital-acquired infection was higher in the methylprednisolone group (OR 2.17, 95% CI 1.01, 4.66; p = 0.04). On the other hand, the 30-day and the in-hospital mortality were not statistically significant different between the two groups. CONCLUSION: Dexamethasone showed a lower MODS on day three of ICU admission compared to methylprednisolone, with no statistically significant difference in mortality.

Knowledge, Attitude, and Practice of Diabetes Mellitus Among the Saudi Population in Riyadh, Saudi Arabia: A Quantitative Study.

Aim To investigate the knowledge, attitudes, and practices of diabetes among Saudi adults in Riyadh. Methods A questionnaire-based study was carried out in September 2019. A previously validated questionnaire was used to assess participants' knowledge. Results The study sample included 3,208 total participants. Of these, 53% were females and 47% were males. About 53.5% of the participants had good knowledge scores. The great majority of respondents did not know whether metformin could cause kidney damage (n = 2651, 82.6%) and more than half did not know whether long-term drug use could cause organ failure (n = 2073, 64.6%) and whether insulin could cause harmful effects (n = 1836, 57.2%). Results showed that 91.3% of the respondents stated that they would seek treatment if they or one of their family members got diabetes mellitus (DM). Approximately 50% of the participants (49.9%) regularly exercised. More than half (68%) of the respondents had never checked their blood glucose levels on an annual basis. More than half of the respondents tried to avoid refined sugar. Conclusion The majority of the participants had never checked their blood glucose levels. In addition, one-third of the participants believed that the use of complementary medicine could actually control diabetes.

Stress, Burnout, and Associated Risk Factors in Medical Students.

Objectives To determine the prevalence of and the risk factors associated with burnout and stress for medical students in Saudi Arabia. Methods A cross-sectional, survey-based study was distributed between January and February 2018 among all 500 medical students from the first to fifth years in a medical college; 356 of the students responded (71.2% response rate). Burnout was measured using the Maslach Burnout Inventory-Student Survey (MBI-SS) while the stress level was measured using the 12-item General Health Questionnaire (GHQ-12). Socio-demographics, professional characteristics, and participation in extracurricular activities were also included as possible predictors of burnout and stress. Results The study revealed that the stress level was (51.7%, n= 184) and the rate of high burnout was (38.2%, n= 136), expressing high exhaustion (77.8%, n=277), high cynicism (65.7%, n=234), and low academic efficiency (45.5%, n=162). Half of the students (50%, n=178) participated in extracurricular activities and were involved in one or more activities such as organizing activities and medical volunteering (n = 52, 14.6%), research (n = 59, 16.6%), and physical exercise (n = 71, 10.4%). There was a statistically significant positive correlation between overall burnout and a lower grade point average (GPA) (OR = 0.581, p 0.004, 95% CI = 0.400 to 0.843). A statistically significant positive correlation was found between stress and students with a lower GPA (OR = 0.737, P = 0.0.23, 95% CI = 0.566 to 0.959); stress was also higher in students who were not involved in any extracurricular activities (OR 1.893, P = 0.004, 95% CI = 1.22 to 2.918). Conclusion Our study shows high burnout rates among medical students. Low GPA students in this study showed a higher overall burnout. Stress was high in our study participants and was higher in students with a low GPA and in students who were not involved in any extracurricular activities.

Identification of recombinant human insulin and biosynthetic insulin analogues by multiplexed targeted unlabeled mass spectrometry of proteotypic tryptic peptides.

Direct qualitative methods that allow the rapid screening and identification of insulin products during early stages of the drug development process and those already in the market can be of great utility for manufacturers and regulatory agencies and the recent scientific literature describes several methods. Herein, a qualitative proteomic method is presented for the identification of recombinant human insulin and all marketed biosynthetic analogues -insulin lispro, aspart, glulisine, glargine, detemir and degludec- via tryptic digestion and identification of proteotypic peptides for each insulin. Individual insulins were first denatured under reducing conditions and the cysteine residues blocked by iodoacetamide. The proteins were then digested with trypsin and the peptide products separated by reversed phase liquid chromatography on an Ascentis® Express ES-C18 column and detected by positive polarity ESI-MS/MS. The digestion peptides were characterized using a multiplexed MRM approach that monitors the fragmentation of the doubly charged unlabeled precursor ion of each peptide into a collection of signature y and b ions. The MRM transitions for the individual peptides were optimized to allow maximal ionization on a standard triple quadrupole mass spectrometer. All products of the digestion procedure for all insulins were detected with adequate signal intensity except for the C-terminal B30Thr whenever it was present and cleaved and the tryptic B1-3 tripeptide of insulin glulisine. The unique proteotypic peptides identified for each of the insulin analogues coupled with their signature y and b ions permitted the unambiguous verification of all sequence variations and chemical modifications. The elution of the A polypeptide chain for all insulins and the tryptic peptides of the B chain, with the exception of a very few, occurred around the same time point. This underscores the close similarity in the physicochemical properties between the digestion peptides and is consistent with the subtle variations in amino acid sequence among the various insulins. Therefore, the identification and distinction of the different types of insulin based solely on the chromatographic retention time of their respective proteolytic products can be deceptive without proper mass spectrometric analysis and may result in false positives.