Read by QxMD icon Read


Mohammed Abdulrazzaq Assi, Mohd Noor Mohd Hezmee, Abd Wahid Haron, Mohd Yusof Mohd Sabri, Mohd Ali Rajion
Lead, a chemical element in the carbon group with symbol Pb (from Latin: Plumbum, meaning "the liquid silver") and has an atomic number 82 in the periodic table. It was the first element that was characterized by its kind of toxicity. In animal systems, lead (Pb) has been incriminated in a wide spectrum of toxic effects and it is considered one of the persistent ubiquitous heavy metals. Being exposed to this metal could lead to the change of testicular functions in human beings as well as in the wildlife. The lead poising is a real threat to the public health, especially in the developing countries...
June 2016: Veterinary World
Ning Li, Guojun Yang, Yueying Wang, Mingwu Qiao, Pingan Zhang, Jianfeng Shao, Guoyu Yang
As the abbreviation of plumbum and a chemical symbol for lead, Pb produces neurotoxic effects, which result into an impairment of learning and memory and other neurological dysfunctions. However, the mechanism of neurotoxicity of Pb exposure is unclear. The present study was undertaken to investigate the effects of maternal lead exposure on expression of insulin-degrading enzyme (IDE),insulin-like growth factor 2 (IGF2) and beta amyloid protein 40 (Aβ40) in the cerebral cortex of mice offspring. Lead exposure initiated from beginning of gestation to weaning...
March 2016: Brain Research Bulletin
Jin-Tao Liu, Bei-Yu Chen, Jie-Qiong Zhang, Fang Kuang, Liang-Wei Chen
Proper proliferation and differentiation of neural stem cells or progenitors in hippocampus is critical to learn and memory functions, which might be disturbed by lead toxicity particularly in young individuals. While astroglial and microglial cells are known to play an important role in regulating neurogenesis of hippocampus, their abnormal response and influence on hippocampal neurogenesis remains unclear. In this study, therefore, glial response including microgliosis, astrogliogenesis and mediating involvement of TLR4-MyD88-NFκB signaling cascades were observed in hippocampus of young mice by animal model with lead (plumbum, Pb) exposure...
December 3, 2015: Toxicology Letters
Bonan Sun, Mingwei Xing
This study assessed the impacts of dietary arsenic trioxide on the contents of 26 elements in the pectoral muscle of chicken. A total of 100 Hy-line laying cocks were randomly divided into two groups (n = 50), including an As-treated group (basic diet supplemented with arsenic trioxide at 30 mg/kg) and a control group (basal diet). The feeding experiment lasted for 90 days and the experimental animals were given free access to feed and drinking water. The elements lithium (Li), boron (B), natrum (Na), magnesium (Mg), aluminium (AI), silicium (Si), kalium (K), calcium (Ca), vanadium (V), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co...
February 2016: Biological Trace Element Research
Qiu-Ju Jiang, Yue-Qiang Zhang, La-Mei Zhang, Xin-Bin Zhou, Xiao-Jun Shi
The study focused on the change of microbial characteristics affected by Plumbum pollution with purple paddy soil in an incubation experiment. The results showed that low concentration of Plumbum had little effect on most of microbial amounts, biological activity and enzymatic activity. However, denitrifying activity was inhibited severely, and inhibition rate was up to 98%. Medium and high concentration of Plumbum significantly reduced the amounts and activity of all microorganisms and enzymatic activity, which increased with incubation time...
May 2014: Pakistan Journal of Pharmaceutical Sciences
Xiong Wan, Jian-Yu Wang, Jian-Hua Ye, Peng Wang, Zhi-Min Zhang
Environmental pollution can cause poisoning, disease and death of organisms, and the absorption and the accumulation of different biological tissues on pollutants are different. The absorption of heavy metal elements of various biological tissues on pollutants is an important biomedical research problem. In the present paper, a laser induced breakdown spectroscopy (LIBS) method was used to quantitatively analyze heavy metal elements in various tissues of some contaminated fish samples. Optimal experimental parameters were obtained in the LIBS experiments for these fish samples, calibration curves for plumbum and barium elements were fitted and the contents of heavy metal elements were determined with the external calibration approach...
January 2013: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
Fang-fang Wen, Li-ming Zheng, Xiao-jing Li, Yan Li, Lei Zhang, Xue-mei Cheng, Chang-hong Wang, Zheng-taou Wang
OBJECTIVE: To establish the quality standards of the herbs of Peganum harmala. METHOD: According to the Chinese Pharmacopoeia (2010 version, volume 1) and its appendix method, the water, total ash, acid insoluble ash, water-soluble extractives, and heavy metal were analyzed for herbs of P. harmala. TLC method was used to separate harmaline, harmine and vasicine from the herb samples by mixture of ethyl acetate-methanol-ammonia (10: 1.5: 0.5) as a developing solvent on high performance silica gel precoated plate (HSGF254) and to identify them inspected under UV 366 nm, visualized by spraying with both Dragendorff reagent, and by bioautographic assay...
October 2012: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Xiaochun Sun, Yan Xie, Lele Wu, Wei Zhu, Jiabo Hu, Rongzhu Lu, Wenrong Xu
Plumbum (Pb) is a heavy metal toxin that causes many pathophysiological effects in various systems of the human body. It has previously been reported that excessive lead trioxide causes hematopoietic system toxicity. Mesenchymal stem cells (MSCs), as cells with self-renewal and multipotent differentiation potential, play a supportive role in hematopoietic function. Lead is well known to interfere with hemoglobin synthesis and affect erythrocyte morphology and survival. MSCs and the cytokines secreted by MSCs are the important components of the hematopoietic microenvironment...
October 2012: Molecular Medicine Reports
Yang Bai, Yan-yi Wang, Lei Zhang, Rong-fa Bu
OBJECTIVE: To investigation the shielding property to (125)I of several different prosthetic materials used in clinical when prostheses are used as carriers of (125)I seed in tumor treatment. METHODS: (125)I seeds were taken as the radiation sources to establish a model in vitro and the radiation doses were measured by thermoluminescent dosemeters (TLD). The shielding property of titanium plate, cochrome plate, and poly methyl methacrylate (PMMA) plate were detected, calculated and compared with that of plumbum plate in the control group...
August 2011: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
Liang Zhao, Zhimin Wang, Huimin Gao, Qiwei Zhang
OBJECTIVE: To remove plumbum ion from the extract of Lonicera japonica by gamma-mercaptopropyl-modified silica gel (MPS). METHOD: The reference plumbum ion solution was added into the extract of L. japonica as the tested samples. The static and dynamic adsorptions were investigated to evaluate the influent factors on the removal of plumbum ion in the extract. The solid content and HPLC profiles of the extract were determined to evaluate the process changes. RESULT: MPS showed excellent adsorption charateristics to remove plumbum ion from the extract of L...
May 2011: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Roberto Queiroz Padilha, Rachel Riera, Alvaro Nagib Átallah
INTRODUCTION: Poisoning due to lead and its compounds has short and long-term effects primarily on the nervous, hematopoietic, gastrointestinal, cardiovascular, musculoskeletal, renal and reproductive systems. It can manifest in acute or chronic symptoms. Measuring serum concentration is the primary method for diagnosing and monitoring exposed workers. Presently, elevated lead levels are treated by drugs whose effectiveness is contested on various fronts. Experimental studies suggest that homeopathic preparations may be in controlling blood lead levels in laboratory animals, creating the need for controlled studies to evaluate the effectiveness and safety of these preparations in humans...
July 2011: Homeopathy: the Journal of the Faculty of Homeopathy
Inga Krzywy, Edward Krzywy, Magdalena Pastuszak-Gabinowska, Andrzej Brodkiewicz
Lead (PB, latin name plumbum) is a heavy metal commonly found in nature. In the environment it is not biodegradable nor does it undergo dissociation. It can accumulate in the tissues of living organisms. Throughout the years the attitude towards lead has changed. Once widely used, currently considered a big threat to the health ofa human. The development of civilization and associated with it an increase of lead emission contributes to a major contamination of the natural Pb environment. The authors have focused attention on the causes and effects on the environmental contamination of lead on human health...
2010: Annales Academiae Medicae Stetinensis
L E Glagoleva, N S Rodionova, S N Gisak, N P Zatsepilina
Model experiments provided results of determining sorbate properties of beet-root fiber in respect of copper, plumbum and zinc in diary foods. It was determined that this fiber makes possible the absorbing of the above mentioned heavy metal, which increases the hygienic safety of the studied diary foods.
2010: Voprosy Pitaniia
Tao Liu, Hong-Xiang Tian, Wen-Yong Guo
In order to study wear characteristics of a 6-cylinder diesel engine, six different working statuses were arranged by altering the clearance between cylinder and piston. Sixty-nine oil samples were taken from engine at different loads under 6 working statuses and analyzed by Spectroil M Instrument made in US. Principal component analysis (PCA) was applied to analyzing spectrometric data of sixty-nine oil samples and clustering those data according to elements and oil samples separately based on the weighted coefficient and principal component scores...
March 2010: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
Yu Tang, Qinghua Jia, Ping Ma, Fujun Li, Tongde Lv, Xiaoqin Ha
OBJECTIVE: To observe effects of plumbum on the apoptosis of primary cultured hippocampus neurons. METHODS: After primary cultured hippocampus neurons of rats treated with different concentration of Pb (C2H3O2) (10, 50, 100 and 200 microg/ml), to observe the morphological changes of the apoptosis of hippocampus cells by Giemsa dyeing, to detect the rate of apoptosis by flow cytometry, to observe the expression of Bcl-2, Bax and p53 by immunocytochemical stain and to analyze quantitatively the average fluorescence intensity of free Ca2+ in kytoplasm of each concentration group by laser scanning confocal microscope (LSCM)...
March 2010: Wei Sheng Yan Jiu, Journal of Hygiene Research
Xiyu Li, Weihu Yang, Qin Zou, Yi Zuo
In this study, the properties of Changbaishan natural pumice were characterized including the microstructure, porosity, mechanical strength, composition, harmful trace element content, and cytocompatibility. The results show that the natural pumice has a porous structure with a pore size ranging from 50 to 150 mum, an interconnective porosity of 80%, and a compressive strength of 1.72 +/- 0.12 MPa, which are adequate as a scaffold for bone tissue engineering. The natural pumice is mainly composed of silicate, and the content of harmful trace elements of arsenic (As), cadmium (Cd), and mercury (Hg) in the pumice are less than 3 ppm, whereas the content of plumbum (Pb) is less than 5 ppm, which can meet the requirement of China Medicine Standard regulation...
June 2010: Tissue Engineering. Part C, Methods
Janete Dias Almeida, Emília Angela Loschiavo Arisawa, Ivan Balducci, Rosilene Fernandes da Rocha, Yasmin Rodarte Carvalho
AIM AND METHOD: The objective of this research was to study the effect of homeopathic treatment with Plumbum metallicum (Plumbum met.) on mandibular bone repair in rats. MATERIALS AND METHODS: We analyzed the mandibles of 60 male rats, approximately 3-month-old, randomly divided into three groups of 20 animals each: control, treated with calcitonin, and treated with a homeopathic medicine. A circumscribed bone defect measuring 4mm in diameter was made in the mandible and covered with a polytetrafluorethylene (PTFE) barrier...
April 2009: Homeopathy: the Journal of the Faculty of Homeopathy
Sagara, Zhaorigetu, Guo-Liang Dong, Jing-Xia Zhang
Five kinds of Mongolia medicines, Eridun-Urile, Deduhonghuaqiweiwan, Tonglage-5, Uzhumu-7 and Geiwang-9 are digested with HNO3-HClO4 system by high pressure system-sealed Microwave Digestion. The 17 inorganic elements content of magnesium, aluminum, calcium, chromium, manganese, ferrum, cobalt, nickel, copper, zincum, arsenic, selenium, strontium, molybdenum, silver, cadmium, plumbum in the solution are determined by ICP-AES. The results are proved to be reliable by adding standard recovery experiment. The recovery is 97...
July 2008: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
A D Tsikunib, S A Zavgorodniĭ
It has been investigated the content of selenium in soil and in wheat from different regions of Adygh Republik. It has been determined that the average content of selenium in soil is about 133,1+/-40,8 mkg/kg, in wheat is 121,5+/-64,4 mkg/ kg. It has been studied the factors having influence on bioavailability of selenium: the maintenance of copper, plumbum and cardmium in the main groups of foodstuffs and the supply the population by iodine.
2008: Voprosy Pitaniia
Hua-Yue Ye, Bo-Ping Ye, Da-Yong Wang
OBJECTIVE: To evaluate whether the thermotaxis tracking model is suitable for assessing long-term memory (LTM) in the nematode Caenorhabditis elegans. METHODS: Animals were trained at 20 degrees C overnight in presence of food. The percentage of animals performing isothermal tracking (IT) behavior was measured at different time intervals after the training. RESULTS: The percentage of animals performing IT behavior, the numbers of body bends inside and outside the training temperature, and the expression patterns of AFD and AIY neurons were similar to those in control animals at 36 and 48 h after training; whereas when extending to 60, 72, and 84 h, locomotory behavior defects were observed in the assayed animals, suggesting that this thermal tracking model is feasible for analyzing LTM at 36 and 48 h after training...
February 2008: Neuroscience Bulletin
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"