+ Translate
+ Most Popular
Gaucher's disease;thirty-two years experience at Siriraj Hospital
A study of Macrobathra Meyrick from China (Lepidoptera, Cosmopterigidae)
First occurrence in ores of tetragonal chalcocite
Effects of trace element nutrition on sleep patterns in adult women
N.Z. range management guidelines. 2. Design of grazing management systems for tussock country
A case of lipoma of the esophagus
A revision of world Acanthosomatidae (Heteroptera: Pentatomidae): keys to and descriptions of subfamilies, tribes and genera, with designation of types
Life history of the coronate scyphozoan Linuche unguiculata (Swartz, 1788)
Perceptual restoration of obliterated sounds
Mutagenicity studies on two chromium(III) coordination compounds
The formation of the skeleton. I. Growth of a long bone. 1st appearance of a center of calcification
Leucopenia and abnormal liver function in travellers on malaria chemoprophylaxis
The joint commission: four key root causes loom large in sentinel event data
Treatment of vitiligo with topical 15% lactic acid solution in combination with ultra violet-A
Behaviour of dairy cows within three hours after feed supply: I. Influence of housing type and time elapsing after feed supply
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Management and control of patients with type 2 diabetes mellitus in Lebanon: results from the International Diabetes Management Practices Study (IDMPS)
The diet composition and nutritional knowledge of patients with anorexia nervosa
Physoporella croatica Herak, 1958 of the Slovak karst Anisian (Slovakia, the West Carpathians Mts.)
Bright lights, big noise. How effective are vehicle warning systems?
Ein Plesiosaurier-Rest mit Magensteinen aus mittlerem Lias von Quedlinburg
Incidence of Chlamydia trachomatis in patients with sterility
Monster soup: the microscope and Victorian fantasy
Preliminary tests with residual sprays against poultry lice
Duration of the life of plants in phylogeny

Mercury resistance in bacterial strains isolated from tailing ponds in a gold mining area near El Callao (Bolívar State, Venezuela)

Mercury resistance in bacterial strains isolated from tailing ponds in a gold mining area near El Callao (Bolívar State, Venezuela)

Current Microbiology 54(2): 149-154

ISSN/ISBN: 0343-8651

PMID: 17200804

DOI: 10.1007/s00284-006-0347-4

Bacterial resistance to mercury (Hg) was investigated in strains isolated from Hg-contaminated tailing ponds located in the gold mining area of El Callao (Bolívar State, Venezuela). High frequencies of resistance were detected to both inorganic-Hg and organomercurials among these strains. A broad range of resistance levels was observed when determining minimal inhibitory concentrations of Hg(2+). Some strains were able to grow in liquid medium containing 25 muM: Hg(2+), whereas others grew at 300 muM: Hg(2+). Of 190 Hg-resistant strains tested, 58.2% were additionally shown to be resistant to ampicillin (40 mg/L), 33.3% to chloramphenicol (30 mg/L), 24.9% to streptomycin (30 mg/L), 23.3% to tetracycline (30 mg/L), and 1.6% to kanamycin (30 mg/L). Furthermore, we found that 20% of the Hg-resistant strains were simultaneously resistant to as many as four of these antibiotics, at the concentrations tested. The presence of large plasmids in 62.9% of 53 Hg-resistant strains screened prompted us to investigate the horizontal transfer of resistance determinants. Mating experiments were performed using Escherichia coli and Pseudomonas aeruginosa as recipient strains. The results obtained confirmed that indigenous Hg-resistant bacteria colonizing the tailing ponds can effectively transfer the phenotype to potentially pathogenic species.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 049571054

Download citation: RISBibTeXText

Related references

Occupational exposure to airborne mercury during gold mining operations near El Callao, Venezuela. International Archives of Occupational and Environmental Health 74(3): 206-212, 2001

Autochthonous and allochthonous strata of the El Callao greenstone belt; implications for the nature of the Paleoproterozoic Transamazonian Orogeny and the origin of gold-bearing shear zones in the El Callao mining district, Guayana Shield, Venezuela. Precambrian Research 143(1-4): 75-86, 2005

Assessing mercury health effects in gold workers near El Callao, Venezuela. Journal of Occupational and Environmental Medicine 43(2): 158-165, 2001

Interpretation of soil geochemical expression of mineralization within El Callao gold mining district, Venezuela. Quarterly of the Colorado School of Mines, 1906- 70(1, Geochemical studies in Venezuela): 83-107, 1975

Mercury fractioning in contaminated soils of El Callao, Bolivar State, Venezuela. Agronomia Tropical Maracay 53(3): 331-345, 2003

Comparison of the methods to analyse mercury in soils from El Callao, Bolivar state, Venezuela. Interciencia 27(4): 191-194, 2002

Geology and gold mineralization of the El Callao District, Bolivar State, Venezuela. Simposio International del Oro en Venezuela 3: 143-147, 1995

The Choco 10 gold deposit (El Callao, Bolivar State, Venezuela): Petrography, geochemistry and UPb geochronology. Precambrian Research 252: 22-38, 2014

Mercury dispersal in water sediments and aquatic biota of a gold mining tailing deposit drainage in pocone brazil. Water Air and Soil Pollution 55(3-4): 283-294, 1991

Mercury resistance in bacterial strains isolated from hospitals and clinics. Bulletin of Environmental Contamination and Toxicology 77(1): 88-95, 2006

Mercury, copper and zinc contamination in soils and fluvial sediments from an abandoned gold mining area in southern Minas Gerais State, Brazil. Environmental Earth Sciences 64.1, 2011

Atmospheric mercury emissions from polluted gold mining areas (Venezuela). Environmental Geochemistry and Health 28(6): 529-540, 2006

Resistance and sensitivity to antimicrobials in Pasteurella multocida strains isolated from calves with pneumonia in Monagas state, Venezuela. Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia 12(Suppl.o 2): 626-629, 2002

Mercury in fish from gold-mining regions in the upper Cuyuni River system, Venezuela. Fresenius Environmental Bulletin 3(5): 287-292, 1994

Demonstration of chloroquine diphosphate resistance in Plasmodium falciparum strains naturally infecting man in an area of the Bolivar State, Venezuela. Revista do Instituto de Medicina Tropical de Sao Paulo 17(1): 38-48, 1975