Publications by authors named "Sadeghi K"

Article Synopsis
  • The study assessed the effects of biologically treated rumen digesta (BTRD) on Holstein steer calves' feed intake, nutrient absorption, and overall growth at different inclusion levels (0%, 10%, 20%, and 30%).
  • Results showed no significant changes in total dry matter intake, but a 20% BTRD inclusion enhanced digestibility, daily weight gain, and feed efficiency while lowering feed conversion ratios.
  • Additionally, BTRD supplementation improved plasma cholesterol and HDL levels, reduced uric acid, and lowered oxidative stress markers, indicating better health and performance in the calves.
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Background And Objectives: Epstein-Barr virus (EBV) infection is ubiquitous all around the world. Tonsils seem to be candidate replication sites for EBV, and these tissues can be infected acutely or chronically. Some studies reported an association between EBV infection and tonsillar hypertrophy.

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Identifying predictive biomarkers of patient outcomes from high-throughput microbiome data is of high interest, while existing computational methods do not satisfactorily account for complex survival endpoints, longitudinal samples, and taxa-specific sequencing biases. We present FLORAL, an open-source tool to perform scalable log-ratio lasso regression and microbial feature selection for continuous, binary, time-to-event, and competing risk outcomes, with compatibility for longitudinal microbiome data as time-dependent covariates. The proposed method adapts the augmented Lagrangian algorithm for a zero-sum constraint optimization problem while enabling a two-stage screening process for enhanced false-positive control.

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Article Synopsis
  • Measles, caused by the measles virus, remains a global health challenge despite the availability of an effective vaccine, with a need for better methods to assess community immunity.* -
  • The enzyme-linked immunosorbent assay (ELISA) is the standard immunity test but often fails to detect low antibody levels, while the more accurate plaque reduction neutralization test (PRNT) is impractical for regular use.* -
  • This study validated the focus reduction neutralization test (FRNT) as a reliable alternative to PRNT, demonstrating that FRNT provides similar sensitivity and perfect correlation in identifying protective antibodies compared to PRNT.*
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  • Patients with hematologic malignancies often take multiple medications, leading to a high risk of drug-drug interactions (DDIs), which can affect patient safety and treatment effectiveness.
  • A study involving 200 hospitalized patients revealed 1281 DDIs, with many deemed clinically significant, prompting numerous interventions from a clinical pharmacist to address them.
  • The findings suggest that the likelihood of DDIs increases as the number of concurrent medications rises, highlighting the importance of clinical pharmacist involvement in managing these interactions.
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Background: This study is done to determine the translation and psychometric properties of the Persian version of Neonatal Intensive Care Unit Parental Belief Scale (NICU-PBS) in Iranian parents.

Materials And Methods: The present study was conducted by the descriptive cross-sectional method. This research was conducted from January to August 2021.

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There is increasing evidence that the secretory/excretory antigens of the larval stage of Echinococcus granulosus can induce both anticancer and oncogenic effects between parasite-derived metabolites and various cancer cells. The dual role of miR-145 as either a tumor suppressor or oncogene has already been reported in cancer. However, the mechanism by which miR-145 induces apoptosis in lung cancer cells treated with hydatid cyst fluid (HCF) remains unclear.

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Sweat evaporation is critical to human thermoregulation, but current understanding of the process on 20 μm to 2 cm scale is limited. To this end, we introduce a wind-tunnel-shaped ventilated capsule with an infrared window for simultaneous infrared sweat imaging and evaporation rate measurement. Implementing the capsule in pilot human subject tests suggests that the common assumption of sweat being an isothermal film is only valid when the evaporation rate is low and sweat forms puddles on the skin.

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  • Sleep architecture plays a crucial role in understanding sleep quality and hyperarousal in individuals with insomnia compared to those without insomnia.
  • A study analyzed data from various clinical trials and studies, assessing sleep patterns in 1710 individuals with insomnia and 1455 without, using advanced techniques including machine learning.
  • Results revealed that those with insomnia experienced higher wakefulness from all sleep stages, greater alpha and theta activity during wakefulness, and marked changes in sleep spindle characteristics, indicating a persistent state of hyperarousal affecting sleep quality.
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Incorporating starch, which is a potential biodegradable substitute for petroleum-based polymers, into conventional polymers is challenging owing to limitations in processability and weak-performing resulting materials. Herein, corn starch/polyvinyl alcohol (PVA) blend films (starch: PVA ratio of 50:50) were prepared via the solvent casting method using glycerol as a plasticizer and with varying concentrations of maleic acid as the crosslinking agent. Fourier transform infrared spectroscopy revealed the molecular interactions of the maleic acid crosslinker with the polymeric network of starch and PVA through an ester linkage.

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Despite the excellent oxygen barrier and biodegradability of polyvinyl alcohol (PVA), its poor physical properties owing to its inherent hydrophilicity limit its application. In this paper, we report a novel surface modification technique for PVA films, involving the control of the predrying conditions (i.e.

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Background: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly contagious virus that uses angiotensin converting enzyme 2 (ACE2), a pivotal member of the renin-angiotensin system (RAS), as its cell-entry receptor. Another member of the RAS, angiotensin II (Ang II), is the major biologically active component in this system. There is growing evidence suggesting that serum miRNAs could serve as prognostic biomarkers for SARS-CoV-2 infection and regulate ACE2 expression.

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Study Objectives: Post hoc analysis to evaluate the effect of daridorexant on sleep architecture in people with insomnia, focusing on features associated with hyperarousal.

Methods: We studied sleep architecture in adults with chronic insomnia disorder from two randomized phase 3 clinical studies (Clinicaltrials.gov: NCT03545191 and NCT03575104) investigating 3 months of daridorexant treatment (placebo, daridorexant 25 mg, daridorexant 50 mg).

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The severe coronavirus disease 2019 (COVID-19) is associated with increased levels of blood interleukin (IL)-6. Therefore, it is hypothesized that modulating the levels or effects of IL-6  could diminish airway inflammation and alter the course of COVID-19. We conducted a controlled, randomized, double-blind clinical trial on hospitalized patients with severe COVID-19 in Iran.

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Extreme heat is a current and growing global health concern. Current heat exposure models include meteorological and human factors that dictate heat stress, comfort, and risk of illness. However, radiation models simplify the human body to a cylinder, while convection ones provide conflicting predictions.

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Article Synopsis
  • This study examined the mutations and variants of SARS-CoV-2 during the fourth wave of the COVID-19 pandemic in Tehran, Iran, using next generation sequencing (NGS).
  • Researchers sequenced the genomes of 15 COVID-19 patients from different stages of the fourth wave to analyze changes over time.
  • They identified dominant variants like alpha and delta, with notable mutations such as D614G and others, highlighting the importance of monitoring these changes for better understanding and treatment of the virus.
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As populations and temperatures of urban areas swell, more people face extreme heat and are at increasing risk of adverse health outcomes. Radiation accounts for much of human heat exposure but is rarely used as heat metric due to a lack of cost-effective and accurate sensors. To this end, we fuse the concepts of a three-globe radiometer-anemometer with a cylindrical human body shape representation, which is more realistic than a spherical representation.

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Microbial transformation of bile acids affects intestinal immune homoeostasis but its impact on inflammatory pathologies remains largely unknown. Using a mouse model of graft-versus-host disease (GVHD), we found that T cell-driven inflammation decreased the abundance of microbiome-encoded bile salt hydrolase (BSH) genes and reduced the levels of unconjugated and microbe-derived bile acids. Several microbe-derived bile acids attenuated farnesoid X receptor (FXR) activation, suggesting that loss of these metabolites during inflammation may increase FXR activity and exacerbate the course of disease.

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The fabrication of coated papers using hydrophilic and biodegradable polymers is important for developing sustainable packaging materials with high barrier and superior mechanical properties. However, water, which is used as the solvent in the paper coating process using hydrophilic polymers, deforms the shape of the paper and deteriorates performance. Therefore, we propose a new coating process that treats Kraft paper (KP) with epichlorohydrin (ECH) as a binder before the coating process.

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By affecting the ovarian pool of follicles and their enclosed oocytes, heat stress has an impact on dairy cow fertility. This study aimed to determine how heat shock (HS) during in vitro maturation affected the ability of the bovine cumulus-oocyte complexes (COCs) to develop, as well as their metabolism of amino acids (AAs). In this study, COCs were in vitro matured for 23 h at 38.

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The female reproductive tract (FRT), including the uterus and oviduct (Fallopian tube), is responsible for maintaining an optimal microenvironment for reproductive processes, such as gamete activation and transportation, sperm capacitation, fertilization, and early embryonic and fetal development. The mucosal surface of the FRT may be exposed to pathogens and sexually transmitted microorganisms due to the opening of the cervix during mating. Pathogens and endotoxins may also reach the oviduct through the peritoneal fluid.

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Higher physical activity is generally associated with more favorable psychological functioning. However, the role of positive and negative affect in such associations is unclear. Accordingly, this cross-sectional study explored whether affect mediated the relationship of physical activity with psychological well-being (PWB) and psychological dysfunctioning (PD).

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Article Synopsis
  • The study compared individual pharmacokinetic (PK) parameters of vancomycin in patients with diabetic foot infections to predicted values from five established population PK models.
  • It analyzed data from 16 patients with an estimated glomerular filtration rate (eGFR) of 30 mL/min or higher, collecting vancomycin serum concentrations to determine optimal drug exposure levels.
  • Results showed significant discrepancies in volume of distribution between population models and individual estimates, emphasizing the need for AUC-based monitoring of vancomycin rather than relying solely on population predictions.
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In SARS-CoV-2 pandemic different disorders in coagulation pathways in COVID-19 patients were reported. We described a 44-year-old female with COVID-19 and protein C deficiency history. She did not show any coagulation disorder during her disease course.

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Background: Sleep spindle activity is commonly estimated by measuring sigma power during stage 2 non-rapid eye movement (NREM2) sleep. However, spindles account for little of the total NREM2 interval and therefore sigma power over the entire interval may be misleading. This study compares derived spindle measures from direct automated spindle detection with those from gross power spectral analyses for the purposes of clinical trial design.

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