Publications by authors named "Yamin N"

Background: The 2019 coronavirus (COVID-19) pandemic led to elevated levels of psychological distress on a global scale. Given that individuals with pre-existing physical conditions are at risk for worse COVID-19 outcomes, those dealing with the stress of physical health problems (including knowing someone with health problems) may experience more severe distress during the pandemic.

Methods: Patients with emotional disorders who completed a diagnostic assessment in the 6 months prior to COVID-19 were surveyed in May-June 2020 on their emotional reactions to COVID-19 (N = 77).

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Delirium, a common neuropsychiatric syndrome among hospitalized patients, has been associated with significant morbidity and mortality in patients undergoing hematopoietic stem cell transplantation (HSCT). Although delirium is often reversible with prompt diagnosis and appropriate management, timely screening of hospitalized patients, including HSCT recipients at risk for delirium, is lacking. The association between delirium symptoms and healthcare utilization among HSCT recipients is also limited.

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This study aims to investigate the gait stability response during incline and decline walking for various surface inclination angles in terms of the required coefficient of friction (RCOF), postural stability index (PSI), and center of pressure (COP)-center of mass (COM) distance. A customized platform with different surface inclinations (0°, 5°, 7.5°, and 10°) was designed.

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Purpose: The present study aims to investigate the effect of incline and decline walking on ground and joint reaction forces (JRF) of lower extremity and plantar fascia strain (PFS) under certain surface inclination angles.

Methods: Twenty-three male subjects walked on a customized platform with four different surface inclinations (i.e.

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Objective: The aim of this study was to investigate the effects of surface stiffness on multisegment foot kinematics and temporal parameters during running.

Methods: Eighteen male subjects ran on three different surfaces (i.e.

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Background: Recent studies have demonstrated a reduction in hospital stay and postoperative complications in elderly patients undergoing laparoscopy-assisted colectomy, and have attributed the shorter stays and reduced morbidity to the laparoscopic approach. We questioned whether the improved outcomes in these studies were a result of the laparoscopic procedure alone or a result of early postoperative feeding and early hospital discharge. We hypothesized that early feeding in elderly patients undergoing open colorectal resection results in a short hospital stay and favorably affects postoperative morbidity.

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In an effort to synthesize potent vasopressin analogs containing photoreactive groups, we prepared, by solid phase synthesis, three analogs with proline or hydroxyproline substitutions in positions 4 and/or 7, lysine in positions 4 or 8, and beta-mercaptopropionic acid in position 1. From these three parent analogs, 1-desamino[4-proline,8-lysine]VP, 1-desamino[4-hydroxyproline,8-lysine]VP, and 1-desamino[4-lysine,7-hydroxyproline]AVP, we then prepared the corresponding azido compounds using the epsilon-amino group of lysine as the attachment point. These six analogs were then assayed for antidiuretic and pressor activities in rats.

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This study reports the solid phase synthesis and biological activities of two oxytocin analogs, [1-desamino, 4-lysine,7-(L-3,4,-dehydroproline)]oxytocin and [1-desamino, 4-threonine,7-(L-3,4-dehydroproline),8-lysine]oxytocin, and several fluorescent, photoaffinity, or biotinylated derivatives of these analogs and of oxytocin. The activities (in IU/mg) of the lysine-containing parent compounds, respectively, were as follows: uterus (without Mg++) 4.8 and 54; uterus (with Mg++) 19 and 440; milk ejection 65 and 414.

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[4-L-Proline]arginine vasopressin, [4-D-proline]arginine vasopressin, [4-hydroxyproline]arginine vasopressin and [4-proline, 7-hydroxyproline] arginine vasopressin were synthesized and found to have antidiuretic activities of 91 +/- 4, 1.7 +/- 0.2, 1.

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Three arginine-vasopressin (AVP) analogues in which the proline residue in position 7 was substituted with 4-hydroxyproline were synthesized by solid-phase techniques, and their biological activities were evaluated by antidiuretic, pressor, and uterotonic bioassays. The [7-trans-4-hydroxy-L-proline]AVP, the 1-desamino[7-trans-4-hydroxy-L-proline]AVP, and the 1-desamino[7-cis-4-hydroxy-L-proline]AVP analogues showed a high antidiuretic and strikingly high uterine activity, a sharp decrease in pressor activity, and a better antidiuretic and uterine to pressor selectivity than the parent compound, arginine-vasopressin. The uterine activities are the highest so far assayed in AVP analogues with replacements in position 7.

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