Nevin Manimala

Int Arch Occup Environ Health. 2022 Jan 22. doi: 10.1007/s00420-022-01835-x. Online ahead of print.

ABSTRACT

PURPOSE: The effects of electromagnetic fields of mobile phones on headaches have attracted researchers during the last decades. However, contradictory results have been reported so far.

METHODS: In this systematic review and meta-analysis, major databases including PubMed, Scopus and Web of Science were searched using suitable search terms and PRISMA guidelines to retrieve eligible studies for the effect of mobile phone use on headache. After the abstract and full-text screening, 33 studies were retrieved and the effect size in terms of odds ratio (OR) was extracted. Between-study heterogeneity was assessed using I² statistic and Q test, while publication bias was evaluated by funnel plot and Egger’s and Begg’s tests.

RESULTS: Among 33 eligible studies, 30 eligible studies were included in the meta-analysis. When considering all studies, the pooled effect size of OR = 1.30(95% CI 1.21-1.39) was obtained, while the heterogeneity between studies was significant. Subgroup analyses by considering the age of participants and EMF exposure duration were performed to find the source of heterogeneity. The odds ratios when the age of participants was the variable were 1.33 (95% CI 1.14-1.53) and 1.29 (95% CI 1.20-1.37), for ages > 18 and age ≤ 18 years, respectively. When EMF exposure duration was considered, subgroup analysis obtained the pooled effect size of OR = 1.41(95% CI 1.22-1.61) and 1.23(95% CI 1.12-1.34), for EMF exposure duration > 100 and ≤ 100 minutes per week, respectively. The pooled effect sizes emphasized the effect of mobile phone use on headaches for all ages and exposure durations.

CONCLUSION: Results revealed that age and exposure duration (mainly call duration), both were the source of heterogeneity between studies. Furthermore, results showed that increasing call duration and mobile phone use in older individuals increased the risk of headache.

PMID:35064837 | DOI:10.1007/s00420-022-01835-x

Oecologia. 2022 Jan 22. doi: 10.1007/s00442-022-05112-z. Online ahead of print.

ABSTRACT

In a recent paper, Renner et al. (Oecologia 195:825-831, 2021) concluded, without supporting statistical evidence, that increased density of managed honey-bee hives between 2019 and 2020 intensified competitive effects of honey bees on non-Apis bee species in the Munich Botanic Garden. Analysis of Renner et al.’s observations revealed that, contrary to their assumption, the change in hive numbers did not statistically alter honey-bee visitation to 29 plant species within or between years. Given this consistency, changes in the proportion of non-Apis bees among visitors of the surveyed plant species between years likely represent their responses to reduced overall availability of floral resources during 2020. Thus, Renner et al.’s observations do not provide convincing evidence that honey bees competitively reduced the abundance of non-Apis bees in the Munich Botanic Garden.

PMID:35064820 | DOI:10.1007/s00442-022-05112-z

Environ Monit Assess. 2022 Jan 22;194(2):115. doi: 10.1007/s10661-022-09749-4.

ABSTRACT

This research aimed to determine the background and precautionary values of Cd, Cr, Cu, Ni, Pb, Zn, Co, As, and Hg and provide the spatial distribution of these metals in Albania’s soils using statistical and geostatistical methods. Since the distribution of the data was commonly not Gaussian, they were transformed into their natural logarithm for deriving background concentrations and precautionary values. Background concentrations were defined as antilog of the median. Precautionary concentration values for soil protection were defined as antilog of 90th percentile of the ln-transformed data. Background concentrations in forest soils were larger compared to those in soils under other land use types. The largest background concentrations for Cd, Cr, Ni, Cu, Co, and Zn were found in forest soils formed on magmatic rocks, while largest concentrations of Pb and Hg were found in soils formed on flysch and molasse. The background values and precautionary concentration values (in brackets) (mg kg^-1) for agricultural soils across flysch/molasses and quaternary deposits were as follows: Cd 0.24 (0.82), Cr 131.63 (527.42), Cu 41.26 (72.75), Ni 287.15 (632.70), Pb 19.11 (284.86), Zn 81.80 (113.90). The largest background values for Cd and Zn were found in Phaeozems, for Cr, Pb, and Co in Luvisols and Cambisols, and for Cu, Hg, and Ni in Fluvisols. The proposed background concentrations and precautionary values complete the picture of metal contents in European soils, can be used as reference concentrations for the Albanian environmental legislation, and allow the identification of potential contamination hot spots.

PMID:35064814 | DOI:10.1007/s10661-022-09749-4

Environ Manage. 2022 Jan 22. doi: 10.1007/s00267-021-01588-2. Online ahead of print.

ABSTRACT

This study sought to assess how smallholder farmers have been living and responding to impacts of climate change in Hanang’ District, Tanzania. Qualitative and quantitative data were collected using key informant interviews, household surveys, focus group discussions (FGDs) and field observations. Quantitative data from the questionnaire survey were analyzed using Statistical Package for Social Sciences (SPSS), whilst, qualitative data were exposed to content analysis. Rainfall and temperature trends were analyzed using Microsoft Excel and the significance of the trends determined using Mann-Kendall and CUSUM analysis. Most respondents (78%) revealed decreased rainfall amounts and changed onset, and 94% reported increased temperature. Farmers disclosed that droughts and floods are major climatic stresses in the area; this was substantiated by observed increasing and decreasing temperature and rainfall trends respectively. This corroborated with most respondents who perceived decreased rainfall amounts and changed onset, and reported increased temperature levels. Response strategies include crop diversification and drought-resistant crop varieties, migration, abandoning some crops, and short-cycle crops. However, smallholder farmers have been failing to effectively address climatic challenges. We argue that they are still heavily reliant on social, economic, and policy support to improve their adaptive capacity, particularly, transformative responses.

PMID:35064806 | DOI:10.1007/s00267-021-01588-2

Eur Radiol. 2022 Jan 22. doi: 10.1007/s00330-021-08459-8. Online ahead of print.

ABSTRACT

OBJECTIVES: To compare the image quality and radiation dose of a deep learning image reconstruction (DLIR) algorithm compared with iterative reconstruction (IR) and filtered back projection (FBP) at different tube voltages and tube currents.

MATERIALS AND METHODS: A customized body phantom was scanned at different tube voltages (120, 100, and 80 kVp) with different tube currents (200, 100, and 60 mA). The CT datasets were reconstructed with FBP, hybrid IR (30% and 50%), and DLIR (low, medium, and high levels). The reference image was set as an image taken with FBP at 120 kVp/200 mA. The image noise, contrast-to-noise ratio (CNR), sharpness, artifacts, and overall image quality were assessed in each scan both qualitatively and quantitatively. The radiation dose was also evaluated with the volume CT dose index (CTDI_vol) for each dose scan.

RESULTS: In qualitative and quantitative analyses, compared with reference images, low-dose CT with DLIR significantly reduced the noise and artifacts and improved the overall image quality, even with decreased sharpness (p < 0.05). Despite the reduction of image sharpness, low-dose CT with DLIR could maintain the image quality comparable to routine-dose CT with FBP, especially when using the medium strength level.

CONCLUSION: The new DLIR algorithm reduced noise and artifacts and improved overall image quality, compared to FBP and hybrid IR. Despite reduced image sharpness in CT images of DLIR algorithms, low-dose CT with DLIR seems to have an overall greater potential for dose optimization.

KEY POINTS: • Using deep learning image reconstruction (DLIR) algorithms, image quality was maintained even with a radiation dose reduced by approximately 70%. • DLIR algorithms yielded lower image noise, higher contrast-to-noise ratios, and higher overall image quality than FBP and hybrid IR, both subjectively and objectively. • DLIR algorithms can provide a better image quality, much better than FBP and even better than hybrid IR, while facilitating a reduction in radiation dose.

PMID:35064803 | DOI:10.1007/s00330-021-08459-8

World J Urol. 2022 Jan 22. doi: 10.1007/s00345-021-03910-3. Online ahead of print.

ABSTRACT

PURPOSE: Arterio-ureteral fistula (AUF) is an uncommon diagnosis, but potentially lethal. Although the number of reports has increased over the past two decades, the true incidence and contemporary urologists’ experience and approach in clinical practice remains unknown. This research is conducted to provide insight in the incidence of AUF in The Netherlands, and the applied diagnostic tests and therapeutic approaches in modern practice.

METHODS: A nationwide cross-sectional questionnaire analysis was performed by sending a survey to all registered Dutch urologists. Data collection included information on experience with patients with AUF; and their medical history, diagnostics, treatment, and follow-up, and were captured in a standardized template by two independent reviewers. Descriptive statistics were used.

RESULTS: Response rate was 62% and 56 AUFs in 53 patients were reported between 2003 and 2018. The estimated incidence of AUF in The Netherlands in this time period is 3.5 AUFs per year. Hematuria was observed in all patients; 9% intermittent microhematuria, and 91% presenting with, or building up to massive hematuria. For the final diagnosis, angiography was the most efficient modality, confirming diagnosis in 58%. Treatment comprised predominantly endovascular intervention.

CONCLUSION: The diagnosis AUF should be considered in patients with persistent intermittent or massive hematuria.

PMID:35064800 | DOI:10.1007/s00345-021-03910-3

Int Urogynecol J. 2022 Jan 22. doi: 10.1007/s00192-021-05068-3. Online ahead of print.

ABSTRACT

INTRODUCTION AND HYPOTHESIS: There has been renewed interest in the management of postoperative pain after benign gynecological surgery. The purpose of the study was to determine if the use of intraoperative and immediate postoperative pain medication differs between vaginal and laparoscopic surgery in women with pelvic organ prolapse.

METHODS: The study included women who had undergone pelvic organ prolapse repair between 2014 and 2019 in two tertiary care hospitals. We collected demographic data and pain medication used during and after surgery, including opioids, local anesthetics, gabapentin, ketorolac, ibuprofen, and acetaminophen. Data analyses were performed using STATA Version 16.1. A p value <0.05 was considered to indicate statistical significance.

RESULTS: A total of 195 women were included in the study, with 98 in the vaginal and 97 in the laparoscopic group. Intraoperative opioid use in the two groups was similar (25 morphine milligram equivalent [MME], p = 0.34). However, women in the laparoscopic group received significantly more intravenous and local anesthesia (lidocaine: 60 vs 40 mg; bupivacaine 49.6 vs 20 ml, p < 0.001). Postoperatively, although women in the vaginal group required almost twice as many narcotics as those in the laparoscopy group (MME = 28 vs 15, p < 0.001), after controlling for confounders in the multivariate analysis, there were no differences in postoperative pain requirements between the two groups. Recovery time had a significant impact on opioid and acetaminophen use (p < 0.05).

CONCLUSION: Use of pain medication was similar in the intraoperative and immediate postoperative period after pelvic organ prolapse surgery when comparing the vaginal and laparoscopic approaches after controlling for potential confounding factors.

PMID:35064788 | DOI:10.1007/s00192-021-05068-3

Andrology. 2022 Jan 22. doi: 10.1111/andr.13157. Online ahead of print.

ABSTRACT

BACKGROUND: There is limited data regarding the effects of systemic androgens on late-stage urethral wound healing.

OBJECTIVE: To evaluate the effects of systemic androgens on fibrosis, and scar formation in late-stage urethral wound healing.

MATERIALS AND METHODS: Forty-five male Sprague-Dawley rats were divided into 3 groups. First group consisted of 15 rats that were castrated on the 23 days of age and were given 5 mg/kg testosterone undecanoate with 1/25 ml cottonseed oil intraperitoneally at weekly intervals for 3 weeks. (CAS+T group). The CAS group included 15 castrated rats. The remaining 15 rats underwent sham surgery. CAS and Sham groups also received 1/25 ml cottonseed oil intraperitoneally at weekly intervals for 3 weeks. Furthermore, all groups were divided into 3 subgroups after testosterone/placebo administration (Urethroplasty performed after 1^st , 2^nd and 3^rd weeks) in accordance with the urethroplasty timing. All animals were sacrificed 6 weeks after urethroplasty. Serum testosterone level was measured, tissue samples were investigated using H&E and Masson’s trichrome. Alpha-SMA, Coll 1 and Coll 3 primary antibodies were applied for immunohistochemical examination. Expression of cytokines and growth factors such as Bax, Bcl2, IL-10, IP-10, TNF-alpha, TGFb1, MMP9, Col-I, Col-III, TIMP-1, Fibronectin, FGF-10, PDGF, alpha-SMA were also evaluated in the tissues.

RESULTS: The blood testosterone levels were significantly higher in CAS+T group at the time of urethroplasty compared with the levels in CAS group however, this difference was not observed at the time of sacrification (p<0.001 and p:0.97, respectively). Histological analysis with Hematoxylin and eosin, Masson’s trichrome staining revealed a significantly higher fibrosis in the sham group compared to the others. Significantly lower fibrosis was detected in the CAS group in the pairwise comparison of the pathological fibrosis area between the CAS, and CAS+T groups (p<0.001). Furthermore, tissue collagen-1, collagen-3 and alpha-SMA expression levels were statistically different between CAS and CAS+T groups (p<0.001, p<0.05 and p<0.001, respectively). The tissue levels of BAX, TIM-1, MMP-9, Coll-I, Coll-III, TGF-beta, TNF-alpha and IL-10 mRNA expressions in the CAS+T group were different than the levels in CAS group (as <0.5-fold and >1.5-fold changes, respectively). The expression of all these markers were significantly higher in the sham group. The sub-group analysis of CAS+T group (Urethroplasty performed after 1^st , 2^nd and 3^rd weeks) revealed similar histopathological wound healing findings.

DISCUSSION: Debate continues on the effects and benefits of androgen use regarding urethral healing. There are two main routes for administration as systemic or local. This study focuses on the late-stage histologic and biochemical effects of systemic androgens.

CONCLUSION: Systemic androgens adversely affect wound healing, and cause abnormal ECM as well as scar formation. This article is protected by copyright. All rights reserved.

PMID:35064654 | DOI:10.1111/andr.13157

J Cosmet Dermatol. 2022 Jan 22. doi: 10.1111/jocd.14741. Online ahead of print.

ABSTRACT

AIM AND OBJECTIVES: Evaluation of the cumulative effect of Radiofrequency Microneedling and fractional Erbium: Glass 1565 laser in moderate to severe acne scars in skin of color.

MATERIAL AND METHODS: This retrospective study was conducted on 20 patients of skin types III -V having moderate to severe atrophic acne scars. The study was carried out over 1 year from March 2019 to March 2020.

PROCEDURE: All patients underwent 4 sessions of non-ablative Fractional Erbium: Glass 1565 laser to alternate with 4 sessions of Fractional Radiofrequency Microneedling once a month over 8 months.

RESULTS: Of the 20 patients enrolled, 18 completed treatment protocol. Two patients were withdrawn from the study because they were unable to attend follow-up treatment sessions. The subjective evaluation was performed using photographs at baseline, 8 months, and 12 months. A photographic evaluation was performed using the following numeric responses: <25%, 25-50%, 51-75%, and 76-100% difference in severity. None of the patients had worsening of their scars. The improvement in scars was statistically significant.

CONCLUSION: The combination of Fractional Erbium: Glass 1565 laser and Fractional Radiofrequency Microneedling can be used in the treatment of acne scars in skin of color. Our protocols helped achieve significant improvement of scars.

PMID:35064639 | DOI:10.1111/jocd.14741

Photodermatol Photoimmunol Photomed. 2022 Jan 21. doi: 10.1111/phpp.12774. Online ahead of print.

ABSTRACT

OBJECTIVE: The aim was to compare the efficacy of photobiomodulation after non-surgical mechanical debridement (MD) on cortisol levels (CL) in periimplant sulcular fluid (PISF) among patients with peri-implant mucositis.

METHODS: Patients with peri-implant mucositis were encompassed. All patients underwent non-surgical MD with (test-group) and without (control-group) a single application of photobiomodulation. Demographic data was collected and PISF was collected. Peri-implant modified plaque-index (mPI), modified gingival-index (mGI), probing depth and crestal bone loss were measured and CL in PISF were recorded. All clinical parameters and PISF CL were re-assessed at 4-months of follow-up. P<0.05 showed statistical significance.

RESULTS: Seventeen (14males and 3females) and 17 (15males and 2females) patients with peri-implant mucositis were recruited in test- and control-groups. The mean age of patients in the test and control-groups were 46.1 ± 6.5 and 50.2 ± 2.7 years, respectively. At baseline, mPI, mGI, PD and PISF volume and CL in control and test-groups were similar. At follow-up, there was a significant reduction in mPI(P<0.001), mGI(P<0.001), PD(P<0.001) and PISF volume(P<0.001) and CL(P<0.001) in both groups compared with baseline. There was no difference in mPI, mGI, PD and PISF volume and CL in test- and control-groups at follow-up.

CONCLUSION: In short-term, non-surgical MD with photobiomodulation does not offer additional benefits in terms of reducing soft-tissue inflammatory parameters and PISF CL in patients with peri-implant mucositis.

PMID:35064588 | DOI:10.1111/phpp.12774