Journal of

Toxicology and Risk AssessmentISSN: 2572-4061

Archive

 Open Access DOI:10.23937/2572-4061.1510030

Blood Lead, Urinary Lead and Urinary δ-Aminolevulinic Acid Levels among Children Living in Kinshasa, D R Congo: A Pilot Biomonitoring Study

Mputu MLC, Ndelo JP, Ndelo MP, Marini RD, Lusakibanza MM, Dubois N, Rozet E, Le Brun P, Cimanga KR and Charlier C

Article Type: Research Article | First Published: December 16, 2019

Lead exists naturally in the earth’s crust and it is widely used as a heavy metal. It is an environment toxicant that may deleteriously affect nervous, hematopoietic, skeletal, renal, endocrine and reproductive systems. So, exposure to lead in the environment continues to be a serious public health problem for all ages. Children are particularly susceptible to lead poisoning. They absorb more lead from their environment and their developing central nervous systems are vulnerable to the toxic. ...

 Open Access DOI:10.23937/2572-4061.1510029

Toxicity Evaluation of Cellulose Nanofibers (Cnfs) for Cosmetic Industry Application

Soo Min Kim, Eun Ji Gwak, Seung Hwan Jeong, Sang Mock Lee, Woo Jong Sim and Jin Sik Kim

Article Type: Original Article | First Published: September 16, 2019

The two main types of nanocelluloses are cellulose nanofibers (CNF) and cellulose nanocrystals (CNC). Both CNFs and CNCs are nanoscale cellulose fibers that have shown reinforcing effects in polymer nanocomposites. CNCs and CNFs are different in shape, size and composition. Cellulose nanofiber (CNF) is produced by mechanical treatment with or without enzymatic or chemical pre-treatment. The material consists of long and thin fibers which form a three-dimensional network. It has high viscosity an...

 Open Access DOI:10.23937/2572-4061.1510028

Heath Risk Assessment of Heavy Metals in Shrimp Acetes Sp. and Cincalok Collected in 2007 from Pantai Klebang, Peninsular Malaysia

Chee Kong Yap, Wan Hee Cheng, Mohd Hafetz Ali, Rosimah Nulit, Shih Hao Tony Peng, Mohamad Saupi Ismail and Chee Seng Leow

Article Type: Research Article | First Published: August 31, 2019

Sampling in Pantai Klebang, Melaka was done on 12th January 2007. The samples collected were Acetes sp. and the cincalok. The Acetes sp. was bought from the fishermen, while the cincalok was bought from the roadside. All collected shrimp samples were kept frozen until dissection was carried out. The frozen samples were thawed at room temperature and later on, cleaned with double-distilled water (DDW). The shrimps selected from the analysis had body lengths between 2.00-2.50 cm. Since most litera...

 Open Access DOI:10.23937/2572-4061.1510027

Health Risk Assessment of Heavy Metals in Fish (Chrysichthys nigrodigitatus) from Two Lagoons in Southwestern Nigeria

Bassey OB and Chukwu LO

Article Type: Research Article | First Published: August 10, 2019

Pollution by heavy metals in aquatic ecosystems has become the central focus of environmental research, due to the threat it poses to consumers of fishery sources. This study seeks to assess the levels of accumulation and potential human risk associated with heavy metals in Chrysichthys nigrodigitatus from Ologe and Badagry lagoons Southwestern Nigeria. The metals (Cr, Cd, Fe, Ni, Cu, Zn, and Pb) in fish samples were analyzed with atomic absorption spectrometer (AAS), while the estimated daily i...

 Open Access DOI:10.23937/2572-4061.1510026

Role of Oxidative Stress and Apoptosis in the Hepatic Toxicity Induced by Cerium Oxide Nanoparticles Following Intratracheal Instillation in Male Sprague-Dawley Rats

Siva K Nalabotu, Nandini DPK Manne, Madhukar B Kolli, Geeta Nandyala, Radha K Para, Kevin M Rice, Cynthia B Jones and Eric R Blough

Article Type: Research Article | First Published: July 04, 2019

Inhaled cerium oxide (CeO2) nanoparticles have been shown to be capable of translocation to the liver where they can cause dose dependent toxic effects. Herein, we investigate if the deposition of cerium in the liver is linked to increased oxidative stress and cellular apoptosis. Specific pathogen free male Sprague-Dawley rats were instilled with either vehicle (saline) or CeO2 nanoparticles (7.0 mg/kg) and euthanized 1, 3, 14, 28, 56, or 90 days post exposure. Liver samples were evaluated for e...

Volume 5
Issue 2