Chlamydia trachomatis Seroepidemiology and Associated Factors in Fertility Treatment-Seeking Patients in the Abu Dhabi Emirate, United Arab Emirates.

PURPOSE: This study was designed to investigate the seroepidemiology of and identify factors associated with exposure to Chlamydia trachomatis ( C. trachomatis ) in fertility treatment-seeking patients in Abu Dhabi Emirate, United Arab Emirates. METHODS: A total of 308 fertility treatment-seeking patients were surveyed. Seroprevalence of past (IgG positive), current/acute (IgM positive), and active infection (IgA positive) with C. trachomatis was quantified. Factors associated with exposure to C. trachomatis were identified. RESULTS: Overall, 19.0%, 5.2%, and 1.6% found to have past, acute/recent, and ongoing active infection with C. trachomatis , respectively. Overall, 22.0% of the patients were seropositive to any of the 3 to C. trachomatis antibodies. Male compared with female patients (45.7% vs. 18.9%, P < 0.001) and current/ex-smokers compared with nonsmokers (44.4% vs. 17.8%) had higher seropositivity. Patients with a history of pregnancy loss had higher seropositivity compared with other patients (27.0% vs. 16.8%), particularly recurrent pregnancy losses (33.3%). Current smoking (adjusted odds ratio [aOR], 3.8; 95% confidence interval, 1.32-11.04) and history of pregnancy loss (adjusted odds ratio [aOR], 3.0; 95% confidence interval, 1.5-5.8) were significantly associated with higher odds of exposure to C. trachomatis . CONCLUSIONS: The observed high seroprevalence of C. trachomatis , particularly in patients with a history of pregnancy loss, possibly indicates the contribution of C. trachomatis to the growing burden of infertility in the United Arab Emirates.

In vitro evaluation of transdermal patches of flurbiprofen with ethyl cellulose.

This study was aimed to determine effects of penetration enhancers and plasticizers on drug release from rationally designed formulations of flurbiprofen based transdermal drug delivery system. Matrix type transdermal patches were formulated with ethyl cellulose (EC) as a polymer by using plate casting method. The plasticizers such as propylene glycol (PG) and dibutyl phthalate (DBP), and enhancers such as Span 20, Tween 20, sodium lauryl sulfate (SLS), isopropyl myristate (IPM) and ethanol (EtOH) were formulated in different concentrations in the patches. Such different combinations of polymer with various enhancers and plasticizers in patches were evaluated for their effect on the physicochemical properties and drug release behavior of flurbiprofen. The drug release study was carried out by the paddle-over-disk method and permeation of drug was performed by Franz diffusion cell using rabbit skin. Patches having ethanol with ethyl cellulose showed more uniformity in the physical properties while the smoothness and clarity of patches containing sodium lauryl sulfate were not satisfactory. The drug release from patches followed Higuchi and Korsmeyer-Pappas model while maximum drug release was obtained by isopropyl myristate (903 microg). It was concluded that the patches having ethyl cellulose with isopropyl myristate and propylene glycol are more useful for transdermal patches of flurbiprofen.

Seroepidemiology of Treponema pallidum, Mycoplasma hominis, and Ureaplasma urealyticum in fertility treatment-seeking patients in the Emirate of Abu Dhabi, United Arab Emirates.

BACKGROUND: Several genital pathogens affect fertility. The study estimated the seroprevalence of Treponema pallidum, Ureaplasma urealyticum, and Mycoplasma hominis and identify specific factors associated with exposure to at least one of these pathogens in patients seeking fertility treatment in the Emirate of Abu Dhabi, United Arab Emirates. METHODS: A seroepidemiological survey was conducted in a major fertility clinic in the Emirate of Abu Dhabi. Serum samples were screened for eight immunoglobulins (IgG, IgM, and IgA) against T. pallidum, U. urealyticum, and M. hominis using enzyme-linked immunoassays. Factors associated with seropositivity to at least one of the pathogens were investigated. RESULTS: The study surveyed 308 patients seeking fertility treatment (mean age: 36.1 ± 6.8 years). Most patients were female (88.0%), 24.9% had at least one chronic comorbidity, 19.3% had a previous genital infection, and 68.1% had been diagnosed with infertility for ≥ 6 months. Ig seroprevalence of T. pallidum (IgG: 3.0%, IgM: 3.2%), U. urealyticum (IgG: 2.6%, IgM: 2.0%), and M. hominis (IgG: 33.9%) was 6.4%, 4.6%, and 49.0%, respectively. Nearly one quarter (23.0%) and one decile (9.2%) of the patients exhibited evidence of ongoing infection (IgM seropositivity) or recent infection (IgA seropositivity) with M. hominis, respectively. Overall, 53.0% of the patients were seropositive for at least one of the screened immunoglobulins. Patients with an education level of secondary schooling or below (66.2%) or those who were unemployed (61.1%) had a higher seroprevalence of IgG antibodies compared with patients with college or higher-level education (48.4%) or those who were employed (48.1%) (p < 0.05). CONCLUSION: Exposure to T. pallidum or U. urealyticum was relatively low, whereas that to M. hominis was common in the surveyed patients. Enhanced awareness and screening programmes for genital pathogens are crucial to prevent and control the transmission of infections and reduce the growing burden of infertility.

Characterization of Fertility Clinic Attendees in the Abu Dhabi Emirate, United Arab Emirates: A Cross-Sectional Study.

This study describes the primary and secondary infertility in patients attending fertility clinics and reports factors associated with primary infertility. A cross-sectional survey was conducted in two fertility clinics in Abu Dhabi Emirate, United Arab Emirates (UAE) between December 2020 and May 2021. The collected information covered sociodemographic, lifestyle, medical, and fertility-related characteristics. The mean age and age at marriage (±SD) of the 928 patients were 35.7 (±6.7) and 25.2 (±6.3) years, respectively. Of the total, 72.0% were obese and overweight, 26.6% reported a consanguineous marriage, and 12.5% were smokers. Secondary infertility (62.5%) was more frequent than primary infertility (37.5%). Primary infertility was inversely associated with age (aOR, 0.94, 95% CI: 0.91-0.98) and not being overweight (aOR, 0.6, 95% CI: 0.4-0.9) while positively associated with a nationality other than Middle Eastern nationality (aOR, 1.9, 95% CI: 1.1-3.3), married for ≤5 years (aOR, 6.0, 95% CI: 3.9-9.3), in a nonconsanguineous marriage (aOR, 2.4, 95% CI: 1.5-3.9), having a respiratory disease (aOR, 2.3, 95% CI: 1.1-4.6), an increased age at puberty (aOR, 1.2, 95% CI: 1.0-1.3), and self-reported 6-<12 months (aOR, 2.4, 95% CI: 1.2-5.1) and ≥12 months (aOR, 3.4, 95% CI: 1.8-6.4) infertility. Patients with primary infertility were more likely to be diagnosed with infertility of an ovulation, tubal, or uterine origin (aOR, 3.9, 95% CI: 1.9-7.9). Secondary infertility was more common than primary infertility. Several preventable fertility-related risk factors including overweight, smoking, and diabetes were found to be common among the fertility clinic attendees.

Herpes simplex virus type 2 seroprevalence and associated factors in fertility-treatment-seeking population: A cross-sectional survey in the United Arab Emirates.

Background: Herpes simplex virus type 2 (HSV-2) is a common genitally-transmitted viral infection affecting more than 400 million individuals globally. In the United Arab Emirates (UAE), in specific at-risk population groups, the burden of HSV-2 has not been reported. This study investigated the prevalence of HSV-2 IgG antibodies in patients seeking fertility treatment and characterized patients with seropositivity to HSV-2 IgG antibodies. Methodology: A cross-sectional sample of patients seeking fertility treatment in a major fertility clinic in Abu Dhabi, UAE was surveyed from April to May 2021. Patients were consecutively invited to complete self-administered questionnaires and provide blood for HSV-2 testing. Information on sociodemographics, medical history, and infertility was collected. Serum specimens were screened using an enzyme-linked immunosorbent assay for HSV-2 IgG antibodies detection. Results: Two hundred and ninety-nine patients were surveyed and provided blood samples. The mean age of the patients was 35.9 ± 6.8 [mean ± standard deviation (SD)] years with 89.3% being women. Sixty-six percent were overweight or obese, 25.0% had at least one chronic comorbidity, and 19.6% reported ever-had genital infection. More than two-thirds (68.3%) of the patients were infertile for ≥ 6 months. Of the 42 infertile males, 69.0% had an abnormal semen analysis. HSV-2 IgG antibodies was detected in 12.4% of patients. The HSV-2 IgG seropositive patients had a higher mean age (39.5 vs. 35.4 years; p < 0.001) compared to seronegative patients. HSV-2 IgG antibodies seropositivity was more common in males (15.6%) than females (12.0%), in patients with secondary (14.1%) vs. primary (9.2%) infertility, or in males with abnormal (10.3%) vs. normal (7.7%) semen. Conclusion: Exposure to HSV-2 at any time in patients seeking fertility treatment in the UAE was found to be slightly common in more than one out of 10 patients. Tailored health campaigns on HSV-2 prevention are warranted.

Photocatalytic, Bactericidal and Molecular Docking Analysis of Annealed Tin Oxide Nanostructures.

Nanosized tin oxide was fabricated with a simple and cost-effective precipitation technique and was analyzed by performing x-ray powder diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, high-resolution transmission electron (HR-TEM) microscopy, energy-dispersive x-ray (EDX) and UV-Vis spectroscopy. The XRD results revealed that tin oxide particles possessed typical orthorhombic structure and exhibited improved crystallinity with annealing. Calcination at 250 °C produced predominantly orthorhombic SnO which transformed to SnO2 at higher temperatures of 500 and 750 °C. HRTEM and FESEM images showed existence of agglomeration within the particles of tin oxide. The absorption was found to increase up to a certain annealing temperature followed by a decrease, which was recorded via UV-Vis spectroscopy. The effect of annealing temperature on dye decomposition behavior of synthesized photocatalysts was studied. It was noted that annealing temperature affects the size of synthesized particles, band gap width and photoactivity of tin oxide. The sample prepared at 500 °C followed first-order kinetics and exhibited maximum photocatalytic reactivity toward methylene blue. The experimental results obtained from the present study indicate that SnO2 is a promising and beneficial catalyst to remove contaminants from wastewater and environment. The antimicrobial evaluation of SnO annealed at 500 °C against selected targets such as E. coli and S. aureus depicted significant inhibition zones in comparison with 250 and 750 °C samples. Furthermore, molecular docking predictions of SnO2 nanoparticles (NPs) were performed against active pocket of ß-lactamase and DNA gyrase enzyme belonging to cell wall and nucleic acid biosynthetic pathway, respectively. The fabricated NPs showed good binding score against ß-lactamase of both E. coli (- 5.71 kcal/mol) and S. aureus (- 11.83 kcal/mol) alongside DNA gyrase (- 9.57 kcal/mol; E. coli and - 8.61 kcal/mol; S. aureus). These in silico predictions suggested SnO2 NPs as potential inhibitors for selected protein targets and will facilitate to have a clear understanding of their mechanism of action that may contribute toward new antibiotics discovery.

Evaluation of the adsorption potential of titanium dioxide nanoparticles for arsenic removal.

The adsorption potential of titanium dioxide (TiO2) nanoparticles for removing arsenic from drinking water was evaluated. Pure and iron-doped TiO2 particles are synthesized via sol-gel method. The synthesized TiO2 nanoparticles were then immobilized on ordinary sand for adsorption studies. Adsorption isotherms were conducted on the synthesized nanoparticles as well as the sand coated with TiO2 nanoparticles under varying conditions of air and light, namely, the air-sunlight (A-SL), air-light (AL), air-dark (AD) and nitrogen-dark (ND). X-ray diffraction (XRD) analysis showed that the pure and iron-doped TiO2 nanoparticles were in 100% anatase crystalline phase with crystal sizes of 108 and 65 nm, respectively. Adsorption of arsenic on the three adsorbents was non-linear that could be described by the Freundlich and Langmuir adsorption models. Iron doping enhanced the adsorption capacity of TiO2 nanoparticles by arresting the grain growth and making it visible light responsive resulting in a higher affinity for arsenic. Similarly, the arsenic removal by adsorption on the sand coated with TiO2 nanoparticles was the highest among the three types of sand used. In all cases, As(V) was adsorbed more compared with As(III). The solution pH appeared to be the most important factor in controlling the amount of arsenic adsorbed.

Evaluating bacteriophage P22 as a tracer in a complex surface water system: the Grand River, Michigan.

Viruses are important pathogens in both marine and fresh water environments. There is a strong interest in using bacteriophages as tracers because of their role as model viruses, since dissolved chemical tracers may not adequately describe the behavior of viruses that are suspended colloids. Despite a large number of studies that examined the transport of bacteriophages in the subsurface environment, few studies examined phage transport in large and complex surface water systems. In this paper we report the results of a dual tracer study on a 40 km reach of the Grand River, the longest river in Michigan, and we examine the performance of bacteriophage P22 relative to a chemical tracer (Rhodamine WT). Our analysis based on the transient storage (TS) model indicated that P22 can be successfully used as a tracer in complex surface water environments. Estimated P22 inactivation rates were found to be in the range 0.27-0.57 per day (0.12-0.25 log10 per day). The highest inactivation rate was found in a reach with high suspended solids concentration, relatively low dissolved organic carbon content, and sediment with high clay content. Estimated TS model parameters for both tracers were found to be consistent with surficial geology and land use patterns. Maximum storage zone sizes for the two tracers were found in different river reaches, indicating that different processes contributed to TS within the same reach for the two tracers. This model can be used to examine the arrival times and concentrations of human viral pathogens released from untreated sewage at recreational areas.