ABSTRACT
Vaginal atrophy is one of the most common menopausal complications and is often overlooked. There are various pharmacological and non-pharmacological treatment approaches to reduce vaginal atrophy; however, no comprehensive study on a convenient, affordable, inexpensive, and noninvasive treatment with fewer complications has been conducted so far. Thus, the current study aimed to provide a systematic review of pharmacological treatment for vaginal atrophy in postmenopausal women in Iran. In this systematic review, all Iranian articles published in Persian or English during 2009 to 2019 were collected and analyzed by searching the Scopus, PubMed, Web of Science, Magiran, Iranian Registry of Clinical Trials (IRCT), and Cochrane Library databases. The inclusion criteria were clinical trials for vaginal atrophy and menopause. Based on the selection criteria, articles with a Jadad scale score of 3 and above were included in the study and qualitatively analyzed. Overall, 15 clinical trials met the inclusion criteria. In total, 12 articles examined the efficacy of pharmacological treatments (including three herbal medicines, three vitamins and dietary supplements, and two chemical drugs) in treating vaginal atrophy in postmenopausal women. Various types of medication have been used to improve vaginal atrophy, and effective treatments include licorice, chamomile, royal jelly, vitamin E, vitamin D, hyaluronic acid, and Vagifem; however, the results of studies on fennel have been inconsistent. However, considering the small number of studies reviewed, further studies with a stronger methodology are needed to confirm the efficacy of these medications.
ABSTRACT
Since it is not possible to form an adequate micromechanical bond between resin cement and zirconia ceramics using common surface treatment techniques, laser pretreatment has been suggested for zirconia ceramic surfaces. The aim of this study was to evaluate the effect of Carbon Dioxide [CO[2]] Laser treatment on shear bond strength [SBS] of resin cement to zirconia ceramic. In this in vitro study thirty discs of zirconia with a diameter of 6 mm and a thickness of 2 mm were randomly divided into two groups of 15. In the test group the zirconia disc surfaces were irradiated by CO[2] laser with an output power of 3 W and energy density of 265.39 j/cm[2]. Composite resin discs were fabricated by plastic molds, measuring 3 mm in diameter and 2 mm in thickness and were cemented on zirconia disk surfaces with Panavia F2.0 resin cement [Kuraray Co. Ltd, Osaka, Japan]. Shear bond strength was measured by a universal testing machine at a crosshead speed of 0.5 mm/min. The fracture type was assessed under a stereomicroscope at ×40. Surface morphologies of two specimens of the test group were evaluated under SEM before and after laser pretreatment. Data was analyzed by paired t-test [p value < 0.05]. The mean SBS values of the laser and control groups were 12.12 +/- 3.02 and 5.97 +/- 1.14 Mpa, respectively. Surface treatment with CO[2] laser significantly increased SBS between resin cement and zirconia ceramic [p value = 0.001]. Under the limitations of this study, surface treatment with CO[2] laser increased the SBS between resin cement and the zirconia ceramic
ABSTRACT
Over the years, the use of plastics has complicated the problem of disposal of solid wastes. One strategy to reduce plastic waste is the use of biodegradable plastics. A group of these plastics are polyhydroxyalkanoates [PHAs]. To date more than 250 different microorganisms are known to synthesize and accumulate PHA. Most Pseudomonas strains are able to accumulate mcl-PHA. In previous studies, the phaC1 and phaC2 genes were identified in Pseudomonas aeruginosa [P.aeruginosa] PTCC 1310 and were cloned. The aim of this study was to express these genes and optimize the conditions for their expression. The inserts obtained from vectors pTZPHAC1 and pTZPHAC2 were subcloned into pET15b expression vector. After transformation of competent Escherichia coli [E.coli] BL21 [DE3] cells with recombinant plasmids, expression was induced using IPTG. By changing expression conditions such as IPTG concentration, time and temperature of incubation with IPTG, the expression conditions for these enzymes were optimized, and the obtained results were compared using proper statistical analysis. The PHA synthase genes were induced with IPTG and the expressed 62 kDa protein was observed and purified. By changing expression conditions, 1 mM IPTG, 37°C and a 2 hr incubation provided the highest level of protein production in E.coli cells. These results suggest that induction condition of PhaC genes can influence expression of PHA synthase enzymes
Subject(s)
Gene Expression , Pseudomonas aeruginosa/genetics , Escherichia coli/genetics , AcyltransferasesABSTRACT
Malnutrition is commonly considered as an important risk factor that can produce a negative influence on the prognosis of patients with chronic neurological diseases. We aimed to evaluate the nutritional status of patients admitted to the neurology ward of Mofid Children's hospital via subjective and objective methods. 61 children [2-6 years of age] who were consecutively hospitalized at the neurology ward between January and March 2008 underwent objective [weight, height, mid upper arm circumference - MUAC- and triceps skinfold thickness-TSF] and subjective nutritional assessment. The result showed that 42.6%, 37.7% and 25.9% of patients were consecutively wasted, underweight and stunted. The z- Scores for TSF and MUAC were below -1 in 32.7% and 41.8% of the patients, consecutively. According to subjective Assessments [SGNA], 52.7% were malnourished. The prevalence of malnutrition was not significantly different between sex or diagnosis groups. Malnutrition is of high prevalence in patients with neurologic diseases. Regular assessment and timely nutritional support may improve the situation