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A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601).

Deadline for manuscript submissions: closed (31 October 2019) | Viewed by 14980

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Prof. Dr. Paul B. Tchounwou

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RCMI Center for Urban Health Disparities Research and Innovation, Richard N. Dixon Research Center, Morgan State University, Baltimore, MD 21251, USA
Interests: environmental health and diseases; gene-environment interactions; environmental toxicology, mutagenesis and carcinogenesis; environmental epidemiology and disease control; health risk assessment and management; ecological risk assessment and management; environmental chemistry and computational toxicology; environmental genomics and proteomics; environmental medicine; and natural resources damage assessment and management
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Special Issue Information

Dear Colleagues,

This Special Issue will collate selected papers presented at the 15th International Symposium on Recent Advances in Environmental Health Research, Jackson, MS, USA, 17–20 February 2019. We have an agreement with the Symposium Chair that a discount will be offered for mansucripts accepted after peer review from this symposium.

Topics will include:
1. New frontiers in environmental health research;
2. Nanoscience, nanotechnology, and nanotoxicology;
3. Environmental toxicology and health risk assessment;
4. Emerging topics in computational biology and environmental modeling;
5. Health disparities and environmental security;
6. Medical geology and human health;
7. Natural resources damage assessment and management.

Prof. Dr. Paul B. Tchounwou
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

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Published Papers (4 papers)

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Research

10 pages, 610 KiB

Open AccessArticle

Exploring Unconventional Risk-Factors for Cardiovascular Diseases: Has Opioid Therapy Been Overlooked?

by Oluwabunmi Ogungbe, Luma Akil and Hafiz A. Ahmad

Int. J. Environ. Res. Public Health 2019, 16(14), 2564; https://doi.org/10.3390/ijerph16142564 - 18 Jul 2019

Cited by 14 | Viewed by 3235

Abstract

Approximately 2150 adults die every day in the U.S. from Cardiovascular Diseases (CVD) and another 115 deaths are attributed to opioid-related causes. Studies have found conflicting results on the relationship between opioid therapy and the development of cardiovascular diseases. This study examined whether an association exists between the use of prescription opioid medicines and cardiovascular diseases, using secondary data from the National Hospital Ambulatory Medical Care Survey (NAMCS) 2015 survey. Of the 1829 patients, 1147 (63%) were male, 1762 (98%) above 45 years of age, and 54% were overweight. The rate of cardiovascular diseases was higher among women [(p < 0.001), 95% CI: 0.40–0.51]. The covariates were age, race/ethnicity, sex, diabetes mellitus, hyperlipidemia, and hypertension; and were adjusted. Diabetes mellitus, hyperlipidemia, and hypertension were significant predictors of CVD [(p < 0.001, 95% CI: 0.57–0.78); (p < 0.001, 95% CI: 0.34–0.44); (p < 0.001, 95% CI: 0.49–0.59)]. There was no significant association between prescription opioid medication use and coronary artery disease [first opioid group p = 0.34, Prevalence Odds Ratio (POR): 1.39, 95% CI: 0.71–2.75; second opioid group: p = 0.59, POR: 1.20, 95% CI: 0.61–2.37, and third opioid group: p = 0.62, POR: 0.85, 95% CI: 0.45–1.6]. The results of this study further accentuate the conflicting results in literature. Further research is recommended, with a focus on those geographical areas where high prevalence of cardiovascular diseases exists. Full article

(This article belongs to the Special Issue Selected Paper from the 15th International Symposium on Recent Advances in Environmental Health Research)

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16 pages, 952 KiB

Open AccessArticle

Agronomic Management and Rice Varieties Controlling Cd Bioaccumulation in Rice

by Liangmei Chen, Wenge Wu, Fengxiang Han, Jiangxia Li, Wenling Ye, Huanhuan Fu, Yonghua Yan, Youhua Ma and Qiang Wang

Int. J. Environ. Res. Public Health 2019, 16(13), 2376; https://doi.org/10.3390/ijerph16132376 - 4 Jul 2019

Cited by 14 | Viewed by 3124

Abstract

Selection of rice varieties and application of amendments are effective measures to ensure food safety. Here we report that in the non-Cd area, the grain quality of all rice varieties met the Chinese National Grain Safety Standards (CNGSS). In the high-Cd area, rice varieties showed significant different bioaccumulation of Cd with lower rice yields than those in non-Cd area with the average decrease of 31.1%. There was a negative correlation between grain Cd content and yields. A total of 19 rice varieties were selected as low Cd accumulating rice varieties and their Cd content met CNGSS in the low-Cd area. Six of them met CNGSS in the high-Cd area. The application of amendments significantly reduced Cd content in rice grains by 1.0–84.7% with an average of 52.6% and 13 of varieties met CNGSS. The amendments reduced available Cd content in soils by 1.1–75.8% but had no significant effects on rice yields. Therefore, the current study implied that proper agronomic management with selection of rice varieties and soil amendments was essential in controlling Cd accumulation in rice grains. Full article

(This article belongs to the Special Issue Selected Paper from the 15th International Symposium on Recent Advances in Environmental Health Research)

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12 pages, 1467 KiB

Open AccessArticle

Kinetics and Thermodynamics of Uranium (VI) Adsorption onto Humic Acid Derived from Leonardite

by Fande Meng, Guodong Yuan, Steven L. Larson, John H. Ballard, Jeremy R. White, Zikri Arslan and Fengxiang X. Han

Int. J. Environ. Res. Public Health 2019, 16(9), 1552; https://doi.org/10.3390/ijerph16091552 - 2 May 2019

Cited by 12 | Viewed by 3322

Abstract

Humic acid (HA) is well known as an inexpensive and effective adsorbent for heavy metal ions. However, the thermodynamics of uranium (U) adsorption onto HA is not fully understood. This study aimed to understand the kinetics and isotherms of U(VI) adsorption onto HA under different temperatures from acidic water. A leonardite-derived HA was characterized for its ash content, elemental compositions, and acidic functional groups, and used for the removal of U (VI) from acidic aqueous solutions via batch experiments at initial concentrations of 0–100 mg·L⁻¹ at 298, 308 and 318 K. ICP-MS was used to determine the U(VI) concentrations in solutions before and after reacting with the HA. The rate and capacity of HA adsorbing U(VI) increased with the temperature. Adsorption kinetic data was best fitted to the pseudo second-order model. This, together with FTIR spectra, indicated a chemisorption of U(VI) by HA. Equilibrium adsorption data was best fitted to the Langmuir and Temkin models. Thermodynamic parameters such as equilibrium constant (K₀), standard Gibbs free energy (ΔG⁰), standard enthalpy change (ΔH⁰), and standard entropy change (ΔS⁰), indicated that U(VI) adsorption onto HA was endothermic and spontaneous. The co-existence of cations (Cu²⁺, Co²⁺, Cd²⁺ and Pb²⁺) and anions (HPO₄²⁻ and SO₄²⁻) reduced U(VI) adsorption. The high propensity and capacity of leonardite-derived HA adsorbing U(VI) suggests that it has the potential for cost-effective removal of U(VI) from acidic contaminated waters. Full article

(This article belongs to the Special Issue Selected Paper from the 15th International Symposium on Recent Advances in Environmental Health Research)

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14 pages, 1014 KiB

Open AccessArticle

Protective Effects of Ammannia baccifera Against CCl₄-Induced Oxidative Stress in Rats

by Lavanya Goodla, Manjunath Manubolu, Kavitha Pathakoti, Thanasekaran Jayakumar, Jeon-Rong Sheu, Mike Fraker, Paul B. Tchounwou and Parthasarathy R. Poondamalli

Int. J. Environ. Res. Public Health 2019, 16(8), 1440; https://doi.org/10.3390/ijerph16081440 - 23 Apr 2019

Cited by 24 | Viewed by 4128

Abstract

Ammannia baccifera Linn. is commonly used as a traditional medicine in India and China. The antioxidant potential of an ethanolic extract of A. baccifera (EEAB; 250 mg/kg and 500 mg/kg) was evaluated against CCL₄-induced toxicity in rats. Antioxidant activity was assessed by measuring the enzymatic and non-enzymatic antioxidants. Phytochemical constituents of EEAB were also analyzed by using UHPLC-QTOF-MS. EEAB treatment markedly reduced CCl₄ effects on lipid peroxidation, cholesterol, triacylglycerides, and protein carbonyls. It increased the levels of phospholipids, total sulfhydryl, and antioxidant enzymes, which were reduced by CCl₄ intoxication. Treatment with EEAB significantly alleviated the CCl₄ effect on non-enzymatic antioxidants. Isoenzyme pattern analyses revealed that significant alterations in superoxide dismutase (SOD1), glutathione peroxidase (GPx2, GPx3), and catalase (CAT) occurred in rats that were exposed to CCl₄ and restored post EEAB treatment. Moreover, CCl₄-induced down regulation of SOD, CAT, and GPx gene expression was conversely counteracted by EEAB. Its bioactivity may be due to its incorporation of major compounds, such as chlorogenic acid, quercetin, protocatechuic acid, lamioside, crocetin, and khayasin C. These results suggest that EEAB may be used as a potent antioxidant and hepatoprotective agent since it is a rich source of flavonoids and phenolic compounds. Full article

(This article belongs to the Special Issue Selected Paper from the 15th International Symposium on Recent Advances in Environmental Health Research)

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