Abstract：
:We have shown previously that exposure of Atlantic croaker to a PCB mixture (Aroclor 1254) results in impaired reproductive neuroendocrine function. In addition, we have identified hypothalamic tryptophan hydroxylase (TPH), the rate-limiting enzyme in serotonin (5-hydroxytryptamine) synthesis, as a target of PCB neuroendocrine toxicity. In order to further elucidate the mechanisms of PCB neurotoxicity, the present study investigated whether PCB-induced decrease in hypothalamic TPH activity resulted from degradation of the enzyme protein. Fish were exposed to Aroclor 1254 in the diet (0.1 mg/100 g body weight (BW)/day) for 30 days. The PCB exposure elicited a significant decrease in hypothalamic TPH protein content, which could be at least partially responsible for the reduced TPH activity. To test whether a similar PCB exposure could cause oxidative damage in croaker hypothalamic tissues, we examined the formation of malondialdehyde (MDA) protein adducts as a marker of lipid peroxidation (LPO). The same dose of PCB increased the MDA-protein adduct formation in the hypothalamus. In a separate experiment, the role of vitamin E, an antioxidant, to prevent or decrease the effect of PCB on hypothalamic TPH activity and gonadal growth was examined. The vitamin E co-treatments (1 and 10 mg/100 g BW/day) with PCB significantly reduced the effects of PCB on TPH activity and gonadal growth. These results suggest possible involvement of oxidative processes in PCB neurotoxicity.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Khan IA,Thomas Pdoi
10.1016/j.marenvres.2004.03.077keywords:
subject
Has Abstractpub_date
2004-08-01 00:00:00pages
333-6issue
2-5eissn
0141-1136issn
1879-0291pii
S0141-1136(04)00064-9journal_volume
58pub_type
杂志文章abstract：:Knowledge of estuarine hydrodynamics and water quality comes mostly from studies of large estuarine systems. The processes affecting algae, nutrients, and dissolved oxygen (DO) in small and shallow subtropical estuaries are relatively less studied. This paper documents the development, calibration, and verification of...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2012.09.007
更新日期：2012-12-01 00:00:00
abstract：:Metal transport in mollusk extrapallial fluid (EPF) that acts as a "bridge" between soft tissues and shell has surprisingly received little attention until now. Using ultrafiltration and radiotracer techniques we determined silver concentrations and speciation in the EPF of the blue mussel Mytilus edulis after short-t...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2010.09.004
更新日期：2011-02-01 00:00:00
abstract：:Deep-sea demersal fish surveys using baited cameras were undertaken in the West African oil provinces between 1297 m and 2453 m depth in 2002, 2005 and 2008. A total of 29 deployments amounting to 16,175 images encountered 31 species of bait attending deep-sea fish from 17 families. The extrapolated species richness w...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2017.05.009
更新日期：2017-08-01 00:00:00
abstract：:The Ria Formosa lagoon is an ecosystem whose water quality reflects the anthropogenic influence upon the surrounding areas. In this lagoon, the clam Ruditapes decussatus has a great economical importance and has been widely used as a biomonitor. A multibiomarker approach (δ-aminolevulinic acid dehydratase, metallothio...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2011.09.012
更新日期：2012-04-01 00:00:00
abstract：:Over 1990-1998, the Mondego estuary, Portugal, experienced profound modifications due to eutrophication, culminating in the disappearance and replacement of Zostera noltii by opportunistic macroalgae in the inner most disturbed areas. A decade after restoration measures implementation, Z. noltii started to gradually r...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2011.11.005
更新日期：2012-02-01 00:00:00
abstract：:Cephalopods represent an important pathway for mercury transfer through food webs. Due to the general difficulties in capturing oceanic squid, beaks found in the diet of top predators can be used to study their life-cycles and ecological role. Using upper beaks of the giant warty squid Moroteuthopsis longimana (major ...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.105049
更新日期：2020-10-01 00:00:00
abstract：:Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants of the marine environment, arising predominantly from petrochemical contamination and pyrogenic sources. A biomarker of PAH exposure was employed in a field study (South West, Spain) in both captured (indigenous) and deployed (caged) shore crabs (Carcin...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2010.03.003
更新日期：2010-07-01 00:00:00
abstract：:Reconstructions suggest a massive decline of nearly 1400 ha of kelp forest in North Western Spain in 2007. In line with global rising temperatures, we hypothesized that Sea Surface Temperature (SST) surpassed a lethal threshold for kelp. We examined whether changes in SST correlated to the proposed decline in kelp for...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2013.06.006
更新日期：2013-09-01 00:00:00
abstract：:The macroalga Caulerpa prolifera colonized the Mar Menor coastal lagoon after the enlargement of the main inlet in 1972, coexisting now with the previous Cymodocea nodosa meadows. The physiological response and the photoacclimation capacity of both species were studied. For this purpose in vivo chlorophyll a fluoresce...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2012.05.001
更新日期：2012-08-01 00:00:00
abstract：:Benzothiazole, a common chemical associated with tire manufacturing and industrial wastewater, is a principal component of both fresh water and estuarine tire leachate, a neurotoxicant to larval sheepshead minnows (Cyprinodon variegatus) in in vivo estuarine studies. The neurotoxic potential of benzothiazole was inves...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/s0141-1136(00)00090-8
更新日期：2000-07-01 00:00:00
abstract：:Understanding the response of species to disturbance and the ability to recover is crucial for preventing their potential collapse and ecosystem phase shifts. Explosive submarine activity, occurring in shallow volcanic vents, can be considered as a natural pulse disturbance, due to its suddenness and high intensity, p...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.105011
更新日期：2020-07-01 00:00:00
abstract：:The induction of hepatic cytochrome P450 1A (CYP 1A) is an important step in the response to contaminants such as polycyclic aromatic hydrocarbons (PAHs), and has been used as a biomarker of exposure in fish. Several consensus response elements have been identified, including eight potential xenobiotic response elemen...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2004.03.002
更新日期：2004-08-01 00:00:00
abstract：:A comparative study on the butyltin levels in various organisms showed that marked bioaccumulation occurs in certain lower trophic levels; i.e. from seawater to phytoplankton and into caprellid amphipods, Caprella spp. Caprella spp., which inhabit algal communities and aquaculture beds in the subtidal zone, are small ...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/s0141-1136(00)00265-8
更新日期：2001-08-01 00:00:00
abstract：:Nematode species composition, trophic structure and body size distributions were followed over an annual production cycle in the central North Sea; to test responses to temporally changing food quality and quantity in the sediment. Changes in the phytoplankton concentration in the water column were quantitatively refl...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2008.08.004
更新日期：2008-12-01 00:00:00
abstract：:Seagrasses represent high primary productivity and provide important ecosystem services to the marine environment. Seagrass-associated microbial communities are playing essential ecological functional roles in biogeochemical cycles. However, little is known about the effect of seagrass vegetation on microbial communit...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.105174
更新日期：2020-12-01 00:00:00
abstract：:The Campeche Sound is the major offshore oil producing area in the Southern Gulf of Mexico (SGoM). To evaluate the impact of oil related activities in the ocean floor sediments, we analyzed the geochemical (major and trace element, organic carbon and hydrocarbon concentrations) and biological (benthic foraminifera) co...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2019.06.006
更新日期：2019-08-01 00:00:00
abstract：:The mummichog (Fundulus heteroclitus) has been shown to be responsive to peroxisome proliferating agents (PPAs). Peroxisomes function as important sites for fatty acid beta-oxidation. Peroxisome proliferation by PPAs or starvation can lead to changes in the size and number of peroxisomes and the expression of omega-hy...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/s0141-1136(02)00167-8
更新日期：2002-09-01 00:00:00
abstract：:Coral reefs are responsible for a wide array of ecosystem services including shoreline protection. However, the processes involved in delivering this particular service have not been fully understood. The objective of the present review was to compile the main results in the literature regarding the study of shoreline...
journal_title：Marine environmental research
pub_type： 杂志文章,评审
doi：10.1016/j.marenvres.2017.03.007
更新日期：2017-06-01 00:00:00
abstract：:Recently, male urogenital papilla feminization (UGPF) in the sand goby Pomatoschistus minutus was reported in several UK estuaries with high levels of estrogenic compounds. The fact that this species is also common in southern European estuaries, together with its life-cycle characteristics, prompted us to investigate...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2006.04.032
更新日期：2006-07-01 00:00:00
abstract：:A laboratory experiment was performed with the clam Ruditapes decussatus, fed with the toxic dinoflagellate Gymnodinium catenatum and the non-toxic algae Isochrysis galbana (14 days) and subsequently only with I. galbana (15 days). Individual paralytic shellfish toxins were determined by LC-FLD in G. catenatum cells, ...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2012.01.002
更新日期：2012-06-01 00:00:00
abstract：:Nrf2 is a well-known transcription factor controlling a number of antioxidant defense-related genes, which is understudied in bivalves. In this study, oysters Crassostrea gigas were exposed for 24, 48 and 96 h to 10 or 30 μM tert-butylhydroquinone (tBHQ), a classic Nrf2 activator. At 96 h, a clear induction of GSH-rel...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2017.07.020
更新日期：2017-09-01 00:00:00
abstract：:We studied the accumulation of polychlorinated biphenyls (PCBs), 1,1,1.trichloro-2,2-bis[p-chlorophenyl]ethane (DDT) and its metabolites, and vitamins A and E in the top levels of the Baltic Sea food web. The investigation focused on the transfer of contaminants and vitamins to the ringed seal (Phoca hispida baltica) ...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2004.10.007
更新日期：2005-09-01 00:00:00
abstract：:Microplastics are recognised as a (persistent) pollutant and are believed to be ubiquitous in the marine environment. The importance of this issue is evident from the large number of technical publications and research efforts within the past decade. However, the Arabian (Persian) Gulf region has few reported datasets...
journal_title：Marine environmental research
pub_type： 杂志文章,评审
doi：10.1016/j.marenvres.2020.104961
更新日期：2020-07-01 00:00:00
abstract：:The amount of macroalgal biomass is an important ecosystem variable. Estimates can be made for a sampled area or values can be extrapolated to represent biomass over a larger region. Typically biomass is scaled-up using the area multiplied by the mean: a non-spatial method. Where algal biomass is patchy or shows gradi...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.104906
更新日期：2020-04-01 00:00:00
abstract：:Beach debris abundance was estimated from surveys on 10 beaches of the Turkish Western Black Sea Coast. Debris was collected from 20 m long transects during four different seasons; sorted and categorized by type, usage and origin. Litter density varied from 0.085 to 5.058 items m(-2). Debris was mainly composed of uni...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2012.12.006
更新日期：2013-04-01 00:00:00
abstract：:Ecdysone is a hormone known to play a pivotal role in crustaceans and insects. In order to evaluate the ecdysone activities in the environment and within the organism, we have developed a biomonitoring Daphnia strain by introducing a reporter gene. In this study, the ecdysone response element was inserted in the upstr...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2013.11.005
更新日期：2014-02-01 00:00:00
abstract：:The concentrations of 18 polychlorinated biphenyls (PCBs), 23 organochlorine pesticides (OCPs), and 16 polycyclic aromatic hydrocarbons (PAHs) were determined in the blubber and liver of 27 bottlenose dolphins (Tursiops truncatus) stranded along the Canary Islands coasts from 1997 to 2011. DDTs (mean of 60,960 and 445...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2014.03.010
更新日期：2014-09-01 00:00:00
abstract：:Coral reef ecosystems are declining at an alarming rate. Increasing seawater temperatures and occurrence of extreme warming events can impair sexual reproduction in reef-building corals and inhibit the ability for coral communities to replenish and persist. Here, we investigated the role of photophysiology on the repr...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2020.105200
更新日期：2021-01-01 00:00:00
abstract：:Mining of seafloor massive sulfides (SMS) is imminent, but the ecology of assemblages at SMS deposits is poorly known. Proposed conservation strategies include protected areas to preserve biodiversity at risk from mining impacts. Determining site suitability requires biological characterisation of the mine site and pr...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2016.02.005
更新日期：2016-04-01 00:00:00
abstract：:Domoic acid (DA) is a neurotoxic amino acid produced by several marine algal species of the Pseudo-nitzschia (PN) genus. We studied the elimination of DA from hemolymph after intravascular (IV) injection in razor clams (Siliqua patula), mussels (Mytilus edulis) and Dungeness crabs (Cancer magister). Crabs were also in...
journal_title：Marine environmental research
pub_type： 杂志文章
doi：10.1016/j.marenvres.2008.02.012
更新日期：2008-07-01 00:00:00
