Publications by authors named "V Grigoryan"

Aims: We sought to characterize the clinical course of patients following worsening heart failure (WHF) treated in an outpatient setting and to identify factors associated with a poor response to standard of care with loop diuretics.

Methods And Results: Between September 2022 and March 2023, 44 eligible patients (mean age 66.3 years, 84% male) with ejection fraction <50% and with WHF symptoms in the preceding week treated in an outpatient setting were enrolled.

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Thermal burns are the most common type of burn injuries. Medical treatment for burns is crucial, especially for third-degree burns and when a significant surface area of the body is affected. One of the most pressing issues in modern medicine is the search for new effective means to accelerate the healing of burn wounds.

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Article Synopsis
  • Genetic copies at the 22q11.2 locus can lead to a higher risk of neuropsychiatric disorders and immune issues, with inflammation profiles potentially linking immune dysfunction to psychiatric symptoms.
  • The study involved analyzing blood samples from 22q11.2 deletion and duplication carriers along with control participants to examine their inflammatory markers and assess relationships with psychosis risk and sleep disturbances.
  • Results showed that 22qDup carriers had significantly higher IL-8 levels compared to typically developing controls, with some differences noted between 22qDup and 22qDel carriers, but no other significant inflammatory marker differences were found.
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Aims: The effects of initiating sacubitril/valsartan in patients with stable heart failure with reduced ejection fraction (HFrEF) on response to fluid and sodium expansion are unknown.

Methods And Results: We have explored changes in natriuresis, diuresis, and congestion in response to the administration of intravenous fluid/sodium load in patients with HFrEF before as compared to after the initiation of sacubitril/valsartan. At baseline (before sacubitril/valsartan initiation) and 2 and 3 months after the initiation, patients underwent an evaluation that consisted of three phases of 3 h: the rest phase (0-3 h), the load phase (3-6 h) in which 1 L of intravenous Ringer solution was administered, and the diuretic phase (6-9 h) at the beginning of which furosemide was administered.

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The Caucasian viper Macrovipera lebetina obtusa (MLO) is one of the most prevalent and venomous snakes in the Caucasus and the surrounding regions, yet the effects of MLO venom on cardiac function remain largely unknown. We examined the influence of MLO venom (crude and with inhibited metalloproteinases and phospholipase A) on attachment and metabolic activity of rat neonatal cardiomyocytes (CM) and nonmyocytes (nCM), assessed at 1 and 24 h. After exposing both CM and nCM to varying concentrations of MLO venom, we observed immediate cytotoxic effects at a concentration of 100 μg/ml, causing detachment from the culture substrate.

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