Journal of
Toxicology and Environmental Health Sciences

  • Abbreviation: J. Toxicol. Environ. Health Sci.
  • Language: English
  • ISSN: 2006-9820
  • DOI: 10.5897/JTEHS
  • Start Year: 2009
  • Published Articles: 217

JTEHS Articles

Ameliorative effects of melatonin on brain biochemical changes induced by subchronic co-administration of chlorpyrifos and cypermethrin in male Wistar rats

January 2017

The present study was aimed at evaluating the ameliorative effects of melatonin on chlorpyrifos and cypermethrin induced brain biochemical changes involving malonadialdehyde (MDA), catalase, superoxide dismutase, glutathione peroxidise and acetyl cholinesterase in male Wistar rats. The fifty adult male Wistar rats used for this study were divided into 5 groups of 10 animals each. Group I was administered distilled...

Author(s): S. B. Idris, S. F. Ambali and M. M. Suleiman

Fast food premium toys as a significant source of lead and chromium to the environment

December 2016

Electronic fast food premiums were investigated for their ability to leach toxic metals into the environment. Low levels of the metals barium, cadmium, chromium, and mercury were detected. Significant quantities of lead were found, up to 177 mg/L, over thirty five times the permissible levels. Key words: Waste, management, toxic, metal, leachate, lead, toys.

Author(s): Short D. B., Badger P., Lorenzi A., Mentzer B., Bearer H., Graves P. S., Harris J. V., Mahoney K. E., Schwaderer A. M., Shennan C. M., Siters A. and Warner C.

Hypothetical adjustment of the acceptable daily intake and correction of the underrated risk: A case study of glyphosate-based herbicides

December 2016

Following the introduction of genetically-engineered glyphosate-resistant (GEGR) crops, commercially known as Roundup Ready (RR), no pesticide’s active principle has been used as much as glyphosate; yet its safety measures have been sternly disputed.  After its classification by the International Agency for Research on Cancer (IARC) as probably carcinogenic to humans in 2015, scientists, activists, regulators...

Author(s): Yehia A. Ibrahim

Spirulina protects against tacrolimus-induced hepatic and renal toxicity in rats: A biochemical and histological study

December 2016

Tacrolimus is a powerful immunosuppressive agent with hepatotoxic and nephrotoxic effects. It has a protective role against many toxicants. This study was conducted to evaluate the possible protective role of spirulina against tacrolimus induced hepatotoxicity and nephrotoxicity. Forty adult male albino rats divided into 4 groups. Group I, control group, Group II, spirulina group (received spirulina 500 mg/Kg body...

Author(s): Zakaria A. Elzawahry, Marwa A. Abass, Manal R. Abd El-Haleem, Reda A. Abdel Hamid and Hebatallah H. Atteia

Assessment of Ochratoxin A intake due to consumption of coffee and cocoa derivatives marketed in Abidjan (Côte d’Ivoire)

November 2016

Ochratoxin A is a mycotoxin produced by moulds belonging to the Aspergillus and Penicillium species, and is a common contaminant of various food products. Ochratoxin A is known for its nephrotoxic and carcinogenic effects; protective actions to protect consumer health must be established. The aim of this study was to assess the level of contamination of manufactured coffee and cocoa-based products marketed in Abidjan to...

Author(s): Pierre Manda, Aholia Jean Baptiste Adepo, Jean Verdier Ngbé and Djédjé Sébastien Dano

Accumulation and distribution of organochlorine and organophosphorus pesticide residues in water, sediments and fishes, Heteropneustis fossilis and Puntius ticto from Kali River, India

October 2016

The present study focused on distribution pattern of persistent organochlorine and organophosphorus pesticides residues found in water, sediments and fish tissues from the Kali River. The total 10 pesticides were observed viz., monochrotophos, parathione, phorete, malathion, α- BHC, β- BHC, γ-BHC, δ-BHC, endrine and endosulfon using gas chromatography electron capture detector technique. The...

Author(s): P. K. Maurya and D. S. Malik

Assessment of heavy metals and estimation of human health risk in Tilapia fish from Naik Lake of Nagpur, India

September 2016

Gills and muscles of Tilapia fish from Naik lake of Nagpur city were estimated for heavy metals (Zinc, Lead, Nickel, Copper and Cadmium) using inductively coupled plasma optical emission spectrometry (ICP-OES). Results showed higher concentrations of heavy metals in gills than in muscles of tilapia fish. Trends of heavy metal concentrations in gills and muscles of tilapia fish were found Zn > Pb> Ni> Cu...

Author(s): Manisha D. Giripunje, Abhay B. Fulke, and Pravin U. Meshram

Analysis of potential mutagenic effects of World Trade Center dust on in vitro systems

August 2016

Thousands of tons of particulate matter were inhaled and ingested by rescue workers and the residents of New York City (NYC) after the attack on the World Trade Center (WTC) on September 11, 2001. This study examined the chemical and physical effects of dust from WTC, in addition to possible mutagenic evidence with in vitro methods and hopes to add credibility to the link between World Trade Center dust inhalation and...

Author(s): Barbara Soares, Patricia Rivera, Felix Dailey and Ann Marie DiLorenzo

Combined arsenic and di-(2-ethylhexyl) phthalate exposure elicits responses in brain ATPases different from hepatic and renal activities in rats

July 2016

Arsenic and di-(2-ethylhexyl) phthalate (DEHP) are environmentally ubiquitous and epidemiologically important toxic agents that millions of people are currently exposed to, worldwide. Although the adverse impact due to exposure to either arsenic or DEHP are documented, the toxicological effects of co-exposure to these agents are largely unknown. In this study, exposure to these chemicals was investigated for their...

Author(s): Olusegun K. Afolabi, Regina N. Ugbaja and Oladipo Ademuyiwa

Heavy metal contamination of food in a developing country like Bangladesh: An emerging threat to food safety

May 2016

This review paper highlighted possible ways of heavy metal contamination of food chain in a developing country like Bangladesh as it is considered an emerging threat for food safety. The review paper was prepared over a period of six months by searching and collecting data of various studies done in Bangladesh from original articles of many national and international journals. Also, data were taken from related review...

Author(s): Hezbullah, M., Sultana, S. , Chakraborty, S. R. and Patwary, M. I.

Determination of some selected heavy metals in spinach and irrigated water from Samaru Area within Gusau Metropolis in Zamfara State, Nigeria

August 2015

Due to insufficient clean water resources, wastewater is largely used for irrigation of vegetables and fruits in many developing countries like Nigeria. As a result of this, vegetables in spite of providing nutrients also accumulate toxic metals and causes health risks. In the present study, the levels of heavy metals (lead (Pb), cadnium (Cd), iron (Fe), zinc (Zn), and copper (Cu)), were analyzed using Atomic Absorption...

Author(s): Salawu K., Barau M. M., Mohammed D., Mikailu D. A., Abdullahi B. H. and Uroko R. I.

Evaluation of five medicinal plants at gas flaring site, using foliar photomicrography

July 2015

Gas flaring is a recognized polluting agent in the environment, affecting all forms of life. The gases and particulate matters (dust, mist and fog) follow the same diffusive pathway with carbon IV oxide into the plant leaf, where they react with enzymes, hormones, and other biochemical molecules, resulting in the deformation of organelles with adverse consequences. In this study, foliar photomicrography analysis of five...

Author(s): Otuu F. Chibuisi, Nwadinigwe Alfreda and Okwuosa, C.N.

Teratogenic and embryotoxic effects of orally administered cypermethrin in pregnant albino rats

July 2015

Lack of consensus in published works regarding cypermethrin's ability to produce teratogenic and embyotoxic effects has led to postulations. The aim of this study was to evaluate the teratogenic and embryotoxic effects of cypermethrin in 5% vegetable oil using albino rats. Acute toxicity study of cypermethrin was evaluated using Probit analysis method. Percentage mortality was calculated and LD50 was...

Author(s): Emeka Promise Madu

Prevalence and determinants of pesticide use in informal households in Mulago II parish, Kampala Uganda

June 2015

The indiscriminate use of pesticides in developing countries has impacted negatively on the environment and public health. Despite that informal households in Uganda carry a high pest burden, the safe use and disposal of pesticides is poorly studied. We determined the prevalence and pesticide use practices among the informal households in Mulago, a suburb of Kampala city. A cross-sectional survey was conducted among...

Author(s): Kibuule Dan and Kagoya Harriet Rachel

Influence of starch addition on properties of methylolated urea/starch copolymer blends for application as a binder in the coating industry

May 2015

Urea formaldehyde resin was reactively blended with various concentrations (10 to 70%) of Cassava starch in order to formulate a paint binder for emulsion paint formulation. Some physical properties and formaldehyde emission of the blended resin were investigated. Viscosity initially decreased before a gradual increase was noted with increase in starch concentration. Refractive index and elongation at break increased...

Author(s): S. A. Osemeahon, O. N. Maitera, A. J. Hotton and B. J. Dimas  

Gross and histopathological studies of Diclofenac, Ibuprofen and Nimesulide induced toxicity in broilers

May 2015

The present experimental work was conducted to elucidate the gross and histopathological studies in broiler chicks when treated with Diclofenac sodium, Ibuprofen and Nimesulide. For this study, 120 apparently healthy broiler chicks of either sexes were randomly divided into 10 groups comprising of 10 birds in 9 groups and 30 birds in control group. The broilers of Diclofenac groups were given 10, 20 and 30 mg/kg body...

Author(s): Majid Shafi, Omer Khalil Baba and Umesh Kumar Garg  

Sub-lethal effect of cypermethrin on acetylcholinesterase (AChE) activity and acetylcholine (Ach) content in selected tissues of Channa striatus (Bloch.)

April 2015

This study was carried out to investigate the sub-lethal effect of cypermethrin on acetylcholinesterase (AChE) activity and acetylcholine (ACh) content in various organ tissues of Channa striatus. Activity of AChE and ACh content was estimated in the tissues of brain, gills, liver, kidney, intestine and muscle of the exposed fish at regular intervals of 1, 7, 15 and 30 days. The study revealed that the inhibition of the...

Author(s): Osman Ahmed, S. A. Mastan, S. Rabia Banu and P. Indira

Evaluation of the fungitoxic and fungistatic potential of the root extractsof male papaya plant and female papaya plant (Carica papaya L.)

March 2015

The fungicidal and fungistatic potential of methanolic root extract of male Carica papaya against Phomopsis vexans which affects egg plants (Solanum melongena L.) leading to the condition called the “Phomopsis blight” was investigated. Result of the experiments revealed that the aqueous extract did not show significant activity, but comparatively the methanol extract of male root demonstrated significant...

Author(s): Gowthami Yaram, Chandrasehar Govindan, Deepa Venkataramulu, Darsana Rajaputhran,Chitrikha Thirunavukkarasu and Goparaju Anumolu  

Haemato-pathological effect of dichlorvos on blood picture and liver cells of albino rats

February 2015

The effect of intraperitonal exposure of dichlorvos an organophosphate (OP) pesticide, on haematology parameters and liver pathology of Wister rats was investigated.  Thirty male albino rats grouped into six (6) of five rats each were injected with 0, 3.7, 7.4, 11.1, 14.8 and 18.5mg/kg of dichlorvos (DDVP) (1 ml/kg) respectively. The haematological parameters measured were red blood cells, haemoglobin; packed cell...

Author(s): Brown Holy, Kenanagha, B   and Onwuli, D.O

Exposure to ZnO-NPs enhanced gut- associated microbial activity in Eisenia fetida

February 2015

With advent of the nanotechnology era, the environmental risk has continuously been receiving engineered nanomaterials, as well as their derivatives. Our current understanding of the potential impact of nanomaterials and their effect on soil organism is limited. The present study fills the gap between effect of manufactured nanomaterials (NPs) and their available natural scavengers. In the study,  earthworm Eisenia...

Author(s): Shruti Gupta, Tanuja Kushwah and Shweta Yadav

Evidence of micronuclei in fish blood as a biomarker of genotoxicity due to surface run off agricultural fungicide (Propiconazole)

January 2015

Micronuclei, nucleoplasmic bridges and nuclear buds are biomarkers of genotoxic events and chromosomal instability. In laboratory, these genome damages can be measured easily. The measurement of cytogenetic alterations in-vivo has considered an initial step in the risk assessment procedures by genotoxic agents. In fishes, micronucleus assay has shown useful in vivo techniques for genotoxicity testing, and potential for...

Author(s): Pallavi Srivastava and Ajay Singh

Phorate poisoning of a leopard (Panthera pardus) in the Nilgiris

January 2015

India is an agricultural country; animal husbandry has always been associated with agriculture. People still thrive upon animal products such as milk, meat and manure intensely for their essentialities. India has a huge cattle population and most of them graze in areas close to forests and their fringes competing for their pastoral needs with other wild animals. This then leads to human-wildlife conflicts, which tends...

Author(s): Boon Allwin and Stalin Vedamanickam

Naturally contaminated feed with low levels of fumonisins with anti-mycotoxin additive and its impact in the immune cells and blood variables in broiler chickens

December 2014

Ninety six one-day-old broiler chickens were used to evaluate the effect of feeding naturally contaminated rations with low levels of fumonisins (FBs) and the protective effect of a commercial anti-mycotoxin additive (AMA) on circulating and intestinal immune cells, blood biochemistry, hematological variables and biomarkers of FBs exposure. Birds were assigned in three groups: Negative control (NC), positive control...

Author(s): Pedro Celso Machado Júnior, Breno Castello Branco Beirão, Tobias Fernandes Filho, Max Ingberman, Celso Fávaro Júnior, and Luiz Felipe Caron,  

Ameliorative effect of seed extract of Pterocarpus santalinus on coragen induced haematological alterations and serum biochemical changes in Charles Foster rats

December 2014

In the present study, the ameliorative effect of an aqueous extract of Pterocarpus santalinus against coragen induced haematological changes, biochemical alterations and oxidative damage in Charles foster rats was undertaken. Coragen administration (1000 mg kg-1 body weight orally for 6 weeks) was associated with significant rise in serum levels of alkaline phosphatase, urea, uric acid and creatinine and enhanced lipid...

Author(s): Khushboo Dutta, Mohammad Ali, Azim Najam, Ranjit Kumar and Arun Kumar  

The use of planktons as tools for monitoring water quality in oil polluted streams of the Niger Delta, Nigeria

November 2014

The Niger Delta ecosystems of Nigeria, typically consisting of mangrove swamps and riparian forests, have come under threat in the last six decades as a result of environmental pollution from oil exploration, drilling, refining and transportation. This study examines two Niger Delta streams (Ogba Evie and Otor) to ascertain the extent of hydrocarbon and heavy metal pollution and the status of the biotic communities in...

Author(s): Amaeze Nnamdi Henry and Onyema Ikenna Charles  

Occurrence of some pesticides in Bhoj wetland Bhopal and their effect on phytoplankton community: An ecological perspective

November 2014

The present communication deal with the analysis of water samples from Bhoj wetland to detect three pesticides (chlorpyrifos, monocrotophos and endosulfan) and to assess their individual toxicity to the phytoplankton community. Higher concentration of most of the pesticides was found to be in the pre-monsoon (March to May) 0.9 µg/l (monocrotophos) and post-monsoon (September to December) 1 µg/l...

Author(s): Ayaz A. Naik and Wanganeo A.

Effect of dipentyl phthalate in 3-dimensional in vitro testis co-culture is attenuated by cyclooxygenase-2 inhibition

October 2014

Exposure to phthalate esters is associated with changes in steroidogenesis, leading to the hypothesis that this is a primary mechanism of phthalate reproductive toxicity. However, some phthalate-induced male reproductive toxicity has been demonstrated in the absence of changes to testosterone production, suggesting additional mechanisms of action. There is evidence that phthalate exposure increases expression of the...

Author(s): Susanna Wegner, Xiaozhong Yu, Hee Yeon Kim, Sean Harris, William C. Griffith, Sungwoo Hong and Elaine M. Faustman

Bioaccumulation of heavy metals in cane rat (Thryonomys swinderianus) in Ogun State, Nigeria

October 2014

Wild animals have provided complimentary protein for human populations across the world over the centuries. This study investigated on bioaccumulation of heavy metals in different organs of cane rat (Thryonomys swinderianus) and the health implications of its consumption. Four carcasses were collected from each of the four ecotomes (Mosinmi, Agbara, Omo forest reserve and Ibese) and concentrations of 7 heavy metals (Fe,...

Author(s): Durojaye A. Soewu, Olufemi M. Agbolade, Rasheed Y. Oladunjoye and Ibukun A. Ayodele

Determination of the effects of some artificial sweeteners on human peripheral lymphocytes using the comet assay

October 2014

In this study, the genotoxicity of the artificial sweeteners acesulfame potassium, aspartame, saccharin, and sorbitol, which are used in food industry and by patients with diabetes, was investigated in human peripheral lymphocyte cells using the single-cell gel electrophoresis (comet) technique. Human lymphocyte cells were treated with the substances for three hour at each of the three dosages (1.25, 2.5, and 5 ppm)....

Author(s): Zeynep Fındıklı and Åžifa TürkoÄŸlu

Mitigating potential and antioxidant properties of aqueous seed extract of Leea guineensis against dichlorovos-induced toxicity in Wistar rats

September 2014

  This work was carried out to access the mitigating potential of Leea guineensis aqueous seed extract against dichlorovos (DDVP)-induced toxicity in Wistar rats for ten days. Twenty Wistar albino rats (weighing 90 to 106 g) were divided into four groups (Normal, DDVP-induced untreated, DDVP-induced treated with 200 mg/kg of L. guineensis seed and DDVP-induced treated with 400 mg/kg L. guineensis seed by oral...

Author(s):   Ajiboye B.O., Salawu S.O., Okezie B., Oyinloye B.E., Ojo A.O., Onikanni S.A., Oso A.O., Asoso O.S. and Obafemi T.O.

Identification and quantification of heavy metals in local drinks in Northern Zone of Nigeria

September 2014

  Nine heavy metals were studied in locally prepared drinks, namely, “Zobo” and “Kunnu Zaki”. The samples were prepared from the outer covering (calyx) of the fruits of roselle Hibiscus sabdariffa and cereals (millet or guinea corn), respectively. Twenty samples of “Zobo” coded Zb1-Zb20 and twenty samples of “Kunnu Zaki” coded Kz1-Kz20 were bought from different...

Author(s):   Bakare-Odunola M. T. and Mustapha K. B.

Response of liver and gills of Mystus gulioto the heavy metal pollutants and metacercarian infection

August 2014

  Mystus gulio collected from the polluted waters of Veli lake in the Thiruvananthapuram district of Kerala, India was subjected to histopathological observations to study the effect of the pollutants on the tissue of the fishes. The epithelial layer of the secondary lamellae was lifted and detached from the underlying tissue, and was also seen in a degenerative form. The hepatocytes have lost their shape and...

Author(s):   Sherly Williams E., Beena V. S., Razeena Karim L. and Seethal Lal S.

1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) and its derivatives in marketed Clarius werneri caught from Uganda’s major urban wetlands

July 2014

The presence of 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) and derivatives in the Clarius werneri of Uganda’s major urban wetland ecosystems was investigated. Solid dispersion extraction method for extraction, florisil column method for clean-up, gas chromatograph equipped with an electron capture detector (GC-ECD) for analysis and gas chromatograph equipped with mass spectrophotometer (GC-MS) for...

Author(s): Proscovia Nnamuyomba, Jolocam Mbabazi and Muhammad Ntale

Bisphenol A induced reactive oxygen species (ROS) in the liver and affect epididymal semen quality in adults Sprague-Dawley rats

May 2014

Reactive oxygen species (ROS) generation, induced by Bisphenol A (BPA) may cause mammalian sperm damage according to research findings. BPA is a known contaminant that with increased exposure in the body can exert both toxic and estrogenic effects in mammalians cells. The aim of this study was to evaluate the effect of BPA-induced oxidative stress in the liver on epididymal semen quality in adult rat. BPA was mixed in...

Author(s): Ansoumane Kourouma, Duan Peng, Quan Chao, Yaima M. Lopez T, Liu Changjiang, Wang Chengmin, Fu Wenjuan, Qi Suqin, Yu Tingting and Yang Kedi

Whole lung lavage therapy: Treatment for lung injury caused by paraquat poisoning

May 2014

Paraquat poisoning is characterized by multi-organ failure and pulmonary fibrosis with respiratory failure, resulting in high mortality and morbidity. To serious paraquat patients, the effectiveness of conventional treatments is unsuccessful. Whole lung lavage is a technique that was developed in the 1960s with the purpose of removing lipoproteinaceous material that accumulates in the bronchi of patients with alveolar...

Author(s): Baotian Kan, Xiangdong Jian, Zhongchen Zhang, Qian Zhou, Jieru Wang, Guangcai Yu and Jing Sun

Characterization of chrome buffing dust (CBD) generated from NILEST tannery associated with pathogenic fungi

March 2014

An attempt was made to monitor the level of chromium from chrome buffing dust waste (CBD) from Nilest tannery through preliminary investigation of the physicochemical characteristic of dried buffing dust (CBD) waste: pH, temperature (°C), alkalinity (mg/L), ash content (%), crude fibre (%) for example, using effluent and reference water sample as (control). Comparative study of the mean values of CBD, effluent and...

Author(s): S. D. Emmanueul, I. K. Adamu, A. Ejila, M. I. Ja’afaru, A. Yabaya and B. Habila

Development of urea formaldehyde and polystyrene waste as copolymer binder for emulsion paint formulation

March 2014

Urea formaldehyde, that is, trimethylol urea (TMU) resin was synthesized and blended with polystyrene waste (PS) to develop TMU/PS copolymer binder for emulsion paint formulation. The resulting copolymer was analysed for formaldehyde emission and other physical properties such as viscosity, gel time, density, turbidity, refractive index, melting point and moisture uptake, elongation at break and solubility in water....

Author(s): Osemeahon S. A. and Dimas B. J.

Taurine alleviated biochemical alterations in male Wistar rats co-exposed to chlorpyrifos and lead

February 2014

The aim of the study was to investigate the effects of taurine on biochemical parameters in male Wistar rats co-exposed to chlorpyrifos and lead. Fifty rats were divided into five groups of ten rats each. The distilled water (DW) group received distilled water and the soya oil (SO) group received soya oil (1 ml/kg). Other groups were treated sequentially with taurine (50 mg/kg), chlorpyrifos (4.25 mg/kg, 1/20th LD50)...

Author(s): Motunrayo Ganiyat Akande, Yusuf Otaru Aliu, Suleiman Folorunsho Ambali and Joseph Olusegun Ayo

Histopathological and hormonal disrupting effects of Escravos crude oil on the ovary of Chinchilla rabbits

February 2014

Crude oil is found in water and soil due to pollution resulting from oil exploration and exploitation. It is used as traditional medicine in some countries, especially among rural dwellers in the south-south and south-eastern Nigeria. The aim of this study was to investigate the effects of Escravos crude oil on serum cholesterol, estradiol and progesterone in the ovary of Chinchilla rabbits. A total of thirty female...

Author(s): Okoye Jude Ogechukwu, Ngokere Anthony Ajuluchukwu, Ogenyi Samuel Ifedioranma and Onyemelukwe Anulika Obianuju

Undesirable effects of drinking water chlorination by-products

February 2014

The fundamental objective of water treatment is the protection of consumers from pathogenic microorganisms. Chlorination of drinking water is essential to prevent waterborne disease. However, chlorine reacts with organic matter present in surface waters to form various by-products suspected of being carcinogenic. In the last decade, several epidemiological studies have been conducted to determine the connection between...

Author(s): Khallef Messaouda, Merabet Rym and Benouareth Djamel Eddine

Coco peat - An alternative artificial soil ingredient for the earthworm toxicity testing

January 2014

The artificial soil medium recommended for invertebrate toxicity studies by OECD and ISO contains sphagnum peat as an organic component. Sphagnum peat is not widely available in tropical countries especially in the Indian subcontinent. Importing of sphagnum peat is not economically feasible and also time consuming Using of native organic matter source is also much more ecologically relevant for the region. Hence,...

Author(s): R. Shanmugasundaram, T. Jeyalakshmi, Sweatha S. Mohan, M. Saravanan, A. Goparaju and P. Balakrishna Murthy

Antibiogram of food-borne pathogens isolated from ready-to-eat foods and Zobo Drinks Sold Within and Around PRESCO Campus of Ebonyi State University (EBSU), Abakaliki, Ebonyi State, Nigeria

January 2014

Food poisoning (food-borne disease) is an infection that occurs after consuming food contaminated by sufficient numbers of viable pathogens and their toxins. It is a common and costly preventable infection that is of public health concern, and which is treated with available antibiotics. Jellof-rice, abacha, moi-moi and zobo drinks are some ready-to-eat foods sold within the PRESCO campus of Ebonyi State University...

Author(s): Iroha Ifeanyichukwu, Afiukwa Ngozi, Nwakaeze Emmanuel, Ejikeugwu Chika, Oji Anthonia and ILang Donathus

Maternal lead exposure and pregnancy outcome in Wistar albino rats

December 2013

Lead (Pb) is a heavy metal environmental pollutant and toxicant. The present study investigated dose-related effects of maternal Pb exposure on pregnancy outcome. Wistar albino rats were gavaged with Pb nitrate (4 or 8 mg/kg) or vehicle daily from gestation day 0 until delivery. Length of pregnancy was noted. Number, birth weight and physical characteristics of pups were registered. Neonatal mortality was also recorded...

Author(s): J. S. Aprioku and I. M. Siminialayi

Bacterial quality control of domestic and imported brands of bottled water in Saudi Arabia

December 2013

Water is one of the most abundant and essential commodities of man occupying about 70% of the earth’s surface and 60% of the human body therefore it should be continuously protected against microbial infections. Also, the mineral content in drinking water should be maintained within the acceptable range. Quality control of drinking water emerged with the invention of bottled drinking water. In this study, samples...

Author(s): Amal A. Al Hazzani, Laila W. Al Farra, Amal Asran, Afaf I. Shehata and Nadine M. S. Moubayed

Effect of some pesticides on growth, nitrogen fixation and nifgenes in Azotobacter chroococcum and Azotobacter vinelandii isolated from soil

September 2013

This study was designed to evaluate the effects of three pesticides (Imazetapir, Dimethoate and Bayleton 50) at the recommended concentration (in the field), on the growth of pure cultures ofAzotobacter chroococcum and Azotobacter vinelandii, on the amount of fixed nitrogen and nifgenes. Herbicide Imazetapir had no negative effect on nitrogen fixing bacteria, while Dimethoate and Bayleton 50 exhibited...

Author(s): Aras Mohammed Khudhur, and Kasim Abass Askar

Estimation of toxic effects of chemically and biologically synthesized silver nanoparticles on human gut microflora containing Bacillus subtilis

September 2013

Biological silver nanoparticles were successfully synthesized from a simple green and natural route using the extract of Allium cepa (onion) with the use of silver nitrate as precursor and chemically synthesized using silver nitrate and tri sodium citrate. Nanoparticle synthesis was proven under UV-Visible absorption spectroscopy. Toxicity of sliver nanoparticles was tested using ToxTrak test, in which, fresh...

Author(s): Pankaj K. Tyagi, Shruti Tyagi, Charul Verma and Aanchal Rajpal

GST polymorphic status modifying the arsenic induced clinical manifestations in people of the southern part of West Bengal, India

September 2013

Persons chronically exposed to environmental arsenic through their drinking water experience various arsenic induced clinical manifestations which includes keratosis and pigmentary changes in the skin. However the response varies widely among persons. To study whether Glutathione-S-Transferase (GST) gene polymorphism plays any role in this variation, a total of 78 study subjects were recruited from the villages of...

Author(s): Sarmishtha Chanda, Bhaswati Ganguli, Uma B. Dasgupta and Debendranath Guha Mazumder,

A comparative study of copper (ii) removal on iron oxide, aluminum oxide and activated carbon by continuous down flow method

August 2013

The adsorption capacities of iron oxide, aluminum oxide, and activated carbon sorbents for the removal of copper ions were compared by down flow method. For this purpose, the 20 mg L-1aqueous solution of Cu (II) with initial pH of 6.5 was fed through three different packed columns at bed depth of 10 cm and flow rate of 1.85 ml min-1. The experimental breakthrough curves were drawn from the adsorption data of packed bed...

Author(s): Mohammad Hossein Salmani, Mahmoud Vakili and Mohammad Hassan Ehrampoush

Induction of oxidative stress and apoptosis in human neutrophils by p-phenylenediamine

August 2013

Exposure to paraphenylenediamine (PPD), a derivative of paranitroaniline widely used as an oxidisable hair dye, is often associated with the development of allergic contact dermatitis. Such reactions involve activation of the subject’s immune system and it is known that neutrophils are the first cells to arrive at the site of perturbation. In view of its pivotal role in the initiation and amplification of...

Author(s): Zineb Elyoussoufi, Norddine Habti, Khadija Mounaji, Said Motaouakkil, and Rachida Cadi

Lead and cadmium in maternal blood and placenta in pregnant women from a mining-smelting zone of Peru and transfer of these metals to their newborns

August 2013

The present study was carried out to determine the lead and cadmium concentration in maternal and umbilical cord blood and placental tissue and breast milk, evaluating forty deliveries with normal evolution of pregnant women living in a mining-smelting town in Peru. In this study, mean concentration of lead in the blood of both women and their neonates were 27.2 ± 15.9 and 18.5 ± 13.0 µg/dl,...

Author(s): Castro Jorge, López de Romaña Daniel, Bedregal Patricia, López de Romaña Guillermo, Chirinos Doris

Page 2 of 5, showing 50 records out of 217 total, starting on record 51, ending on 100