Publications by authors named "Amir Ehsani"

Soil moisture (SM) is a critical variable influencing various environmental processes, but traditional microwave sensors often lack the spatial resolution needed for local-scale studies. This study develops a novel stacking ensemble learning framework to enhance the spatial resolution of satellite-derived SM data to 1 km in the Urmia basin, a region facing significant water scarcity. We integrated in-situ SM measurements (obtained using time-domain reflectometry [TDR]), Soil Moisture Active Passive (SMAP) and Advanced Microwave Scanning Radiometer 2 (AMSR2) SM products, Moderate Resolution Imaging Spectroradiometer (MODIS) land surface temperature and vegetation indices, precipitation records, and topography data.

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Even though many studies have been thus far devoted to landscape services (LS) or vulnerability assessment (VA) alone, the relationship between these two concepts has been less investigated. The current study attempts to model the spatial relationship between LS and VA in the Tarhan area (west of Iran). For this purpose, a combination of the analytic hierarchy process (AHP), remote sensing (RS), and geographic information system (GIS) techniques are applied to assess vulnerability.

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Background: Acne scar is an inflammatory condition, which commonly occurs in patients with acne vulgaris, especially in adults. Mesogels have been reported effective in improving atrophic acne scars.

Aims: We investigated the efficacy of adding Profhilo (a hyaluronic acid-based filler) to subcision as a new treatment method.

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Background: Botulinum toxin type A is a widely used treatment of facial wrinkles. The objective of this study was to compare the efficacy and safety of a new botulinum toxin type A (Masport [abobotulinum toxin A], MasoonDarou Co) with DYSPORT for the treatment of glabellar lines.

Methods: 262 subjects with moderate-to-severe glabellar lines received either a fixed dose of 50 units of MASPORT or DYSPORT (Ipsen Company, England).

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Article Synopsis
  • - The study investigates advanced glycation end products (AGE) and their measurement through skin autofluorescence (SAF) in diabetes mellitus (DM) versus nondiabetic individuals, highlighting AGEs' role in protein dysfunction related to aging.
  • - Researchers conducted a comprehensive literature search and found that DM patients had significantly higher SAF levels and HbA1c, indicating greater AGE accumulation compared to nondiabetics, with notable differences in age, gender, and BMI factors.
  • - Despite these findings, the study concludes that SAF may not be a reliable marker for AGEs in diabetes patients at this stage, although it suggests potential future applications in assessing metabolic syndrome.
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Structure and function are the inherent characteristics of each ecosystem providing various services such as clean air, extreme weather mitigation, and mental and physical well-being. The objective of this study is to develop a unified model combining Integrated Valuation of Ecosystem Services, ecological network (EN), and correlation analysis to investigate changes in ecosystem structure, function, and process. In this context, carbon sequestration, soil reduction, and flood risk mitigation were quantified from 2000 to 2020 and predicted for 2040 using the cellular automata and Markov chain (CA-Markov) model.

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Background: Striae gravidarum (SG) is a common pregnancy-related dermatologic problem, for which finding an effective treatment remains a challenge.

Aim: To evaluate the safety and efficacy of 1540 nm non-ablative fractional laser (Star lux 500) in the treatment of SG in Iranian women and peruse the relationship between clinical improvement rate and patient characteristics as well as clinical features of striae.

Method: A prospective before-after study was conducted on 50 patients with SG who received three monthly sessions of 1540 nm non-ablative fractional laser and were followed for 2 months after the last treatment session.

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Background: Individuals with normal weight could suffer from obesity based on their body fat percentage (also known as normal weight obesity (NWO)), thus being at risk of significant morbidity and mortality compared to the general population. It seems that inflammatory pathways and chronic inflammation are significant contributors to the pathogenicity of NWO. This study aimed to assess and pool the association of proinflammatory and anti-inflammatory cytokines with NWO.

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In this study, the distribution and alterations of ozone concentrations in Tehran, Iran, in 2021 were investigated. The impacts of precursors (i.e.

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Article Synopsis
  • Hirsutism, often caused by PCOS, leads to mental health issues like stress and depression in women, and Laser-assisted hair removal (LAHR) is considered an effective treatment.
  • A clinical trial at the Razi Hospital Laser Clinic involved 80 women undergoing three LAHR sessions, measuring changes in hirsutism severity, quality of life, and depression before and after treatment.
  • Results showed significant improvements in hirsutism scores, depression levels, and quality of life indicators, with no major complications reported, indicating LAHR's effectiveness in alleviating the physical and emotional impacts of hirsutism.
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Background: Prevalence and subsequent conditions of childhood and adolescent obesity are increasing. It has been seen that obesity in youth is associated with adulthood cancer. This systematic review and meta-analysis aimed to determine the pooled association of childhood obesity with cancers in adulthood.

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Background: Knowledge of normal facial vascular variations could prevent catastrophic complications of cosmetic procedures as well as providing a guide for surgical planning. Color Doppler ultrasound is a safe and noninvasive method for real time vascular evaluation.

Objective: The aim of this study was to evaluate the normal variations of the facial, angular, transverse facial, supratrochlear and supraorbital arteries in a sample of normal individuals.

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The COVID19 pandemic has affected all aspects of people's lives. Eating habit plays a crucial role in children and adolescents' physical and mental development and the impacts might last until adulthood. This systematic review aimed to summarize a comprehensive and updated overview of eating habits changes due to COVID19 confinements among children and adolescents.

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Introduction: Novel atherogenic lipid indices, including non-high-density lipoprotein cholesterol (non-HDL-C) which is calculated by subtracting the HDL-C value from the total cholesterol level, atherogenic index (ratio between triglycerides (TG) and HDL-C concentrations (TG/HDL-C)), and Diff-C (calculated by subtracting low-density lipoprotein (LDL-C) from non-HDL-C), have been known as valuable predictors of dyslipidemia and subsequent cardiovascular diseases. Previous studies have reported the potential association of novel atherogenic lipid indices with metabolic syndrome (MetS). This meta-analysis aimed to assess the pooled association of novel atherogenic lipid indices with MetS or its components.

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Background And Objective: Sunlight exposure, the main source of endogenous vitamin D synthesis, may increase the risk of non-melanoma skin cancers (NMSC) development. Vitamin D receptor (VDR) polymorphisms are associated with various malignancies. This study aimed to examine the associations between vitamin D status and VDR FokI polymorphisms in Iranian subjects with NMSC.

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Water was magnetized an external magnetic field and employed, for the first time, as a solvent in green preparation of 3,4-dihydropyrimidin-2(1)-ones by the one-pot three-component condensation reaction using boric acid as a catalyst. Shorter reaction times, higher yields, and cleaner reaction profiles were some advantages of using magnetic water.

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Background: Psoriasis is a common chronic dermatosis that can negatively affect patients' lives.

Aim: To obtain more insight about how having psoriasis and how the various clinical and physical characteristics of the disease impact the health-related quality of life (HRQoL) of pediatric patients.

Methods: A retrospective cross-sectional study was designed with 40 pediatric patients with psoriasis.

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This paper presents a time-series analysis of SO air concentration and the effects of particulates (either PM and PM) concentrations and meteorological conditions (relative humidity and wind speed) on SO trend in Tehran for the period from 2011 to 2020. The source data were obtained from 21 monitoring stations of Air Quality Control Company and meteorological stations in Tehran. To predict the status of future concentration of SO, PM and PM, a Box-Jenkins ARIMA approach was used to model the monthly time series.

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Rituximab is widely used as the first-line treatment for pemphigus patients. Since it depletes the B cells, it increases the risk of infections. Here, we evaluated the prophylactic efficacy of cotrimoxazole in decreasing the risk of pneumocystis pneumonia (PCP) infection in the pemphigus patients treated with rituximab.

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The associations between components of metabolic syndrome (MetS), insulin resistance (IR), and several malignancies have been reported. However, the possible link between IR and dermal malignancies, including non-melanoma skin cancers (NMSCs), has not been investigated to date. In this study, we aimed to examine the possible association between components of MetS, IR, adhesion molecules, and NMSC for the first time.

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Background: Advanced glycation end products (AGE), one of the main factors causing diabetic end-organ damage, accumulate in long half-life proteins, such as skin and cartilage collagen. AGE measurement may offer additional evidence to predict diabetic vascular complications. Skin autofluorescence (SAF) is suggested as a non-invasive, quick, and reliable method to measure tissue AGE level.

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Article Synopsis
  • Laser-assisted hair removal, specifically using an alexandrite laser, is a common solution for patients with unwanted hair, but the impact of pulse duration on results is not well understood.
  • In a study involving 50 women with facial hirsutism, treatments with 3 ms and 10 ms pulse durations were compared over three sessions.
  • The findings showed no significant difference in hair clearance rates or side effects between the two pulse durations, indicating that both are equally effective and safe for hair removal.
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Air pollution and its effects on human health and the environment are one of the main concerns in urban areas. This study focuses on the distribution and changes in the concentrations of ozone and its precursors (i.e.

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This study investigates the changes of short-lived climate pollutants and other air pollutants during the COVID-19 pandemic in Tehran, Iran. Concentrations of air pollutants were obtained from 21 monitoring stations for the period from 5 January 2019 to 5 August 2019, representing normal conditions unaffected by COVID-19, and the period 5 January 2020 to 5 August 2020, i.e.

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