30 research outputs found
Seasonal variations in abundance and diversity of copepods in Mond River estuary, Bushehr, Persian Gulf
No full textAbstract. Hedayati A, Pouladi M, Vazirizadeh A, QadermarziA, Mehdipour N. 2017. Seasonal variations in abundance and diversity of copepods in Mond River estuary, Bushehr, Persian Gulf. Biodiversitas 18: 447-452. The present study was carried out to investigate the abundance and biodiversity of copepods from Mond River (MR) estuary, Bushehr, Persian Gulf during 4 seasons and their relationships with environmental factors. The water samples were collected in mid-season from spring 2012 to winter 2013 for one year period. Copepod samples were collected by using of 140 µm plankton net with 25 cm mouth diameter and vertical towing in all stations. Copepod assemblages were comprised of 4 orders, 13 families and 10 genera. Orders were included; Calanoida, Cyclopoida, Poecilostomatoida, Harpacticoida and Genera were included: Cathocalanus, Acrocalanus, Paracalanus, Subeucalanus, Centropages, Temora, Calanopia, Labidocera, Pontella, Acartia, Oithona, Oncaea, Corycaeus, Microsetella, Microsetella and Euterpina. The order Calanoida with 10 genera was the most diverse and dominant order between Identified orders. The means (±SE) of copepods abundance were recorded in spring (5853.4±1826.19 Individual m-3), in summer (6707.6±1930.15 Ind. m-3), in fall (4393.6±1263.37 Ind. m-3) and in winter (3400±763.98 Ind. m-3), respectively. Simpson and Shannon-Wiener biodiversity indices were obtained in spring (0.87±0.11 and 2.86±0.19), in summer (0.89±0.006 and 3.11±0.15), in fall (0.86±0.13 and 2.66±0.2) and in winter (0.83±0.12 and 2.39±0.15), respectively. The copepod assemblages had most amounts of diversity and abundance at station 5 in all seasons. Pearson correlation showed significant correlation between copepod diversity and abundance with salinity, pH and temperature. Results showed that salinity factor was more effective environmental factor on Simpson (0.01> P and r=0.783) and Shannon-Weiner indices (0.01> P and r=0.727), and copepods abundance (0.01> P and r=0.664) in MR estuary.
Keywords: Abundance, copepod, diversity, environmental factor, Mond Estuary</jats:p
The Effect of Crude Extract of Turbo coronatus from the Persian Gulf on Serum Biochemical Parameters and Hematiological Parameters of Rats
No full text: Turbotoxins are marine secondary metabolites that produce in Turbinidae family and were isolated from Japanese Turbo marmorata for the first time. A few research has been done on these metabolites so far. Another species, Turbo coronatus exists in Iran. The main aim of the current project was to investigate some biological effects of the crude extract of Turbo coronatus from the Persian Gulf .
Materials and methods: In this study, 18 rats were selected in three groups including the control group. The experimental groups received ½ and 1/3 lethal doses intravenously and serum levels of liver and muscle enzymes, electrolytes and complete blood counts (CBC) were measured after 24 hours.
: The levels of liver and muscle enzymes, amylase, sodium, potassium, calcium, phosphorus, ferrous, haptoglobin, albumin and creatinine were significantly increased in experimental group compared with the control group by injection of crude extract of Turbo coronatus; however, hemoglobin, mean corpuscular volume (MCV), red blood cell count, magnesium, and glucose levels were significantly decreased in the experimental group compared with the control group.
: Intravenous injection of ½ and 1/3 lethal doses of the crude extract of Turbo coronatus to rats produced rhabdomyolysis and hepatocytes injury. In addition, the crude extract injection acted as a haematoxin and decreased hemoglobin and MCV
Sea urchin: toxinology, bioactive compounds and its treatment management
No full textBackground: The sea urchins are classified in the echinoderms category because of their spiny skin. Saponins are the major responsible metabolites for Echinodermata biological activities . As mentioned before, about 80 species of sea urchins are venomous for human. Their spine, pedicellariae, and some other organs such as gonads and coelomic fluids contain different toxins and bioactive compounds. This review study have evaluated toxinology and bioactive compounds from the extracts, and treatment management of these venomous animals.
Results: Contractin A, echinochrome A, echinometrin, major yolk protein (MYP), centrocins (I, II(, cathepsin B/X, strongylostatins (I,II), vitellogenin, UT841 toxin, spinochrome, and pedoxin as the prosthetic group of peditoxin are the most important compounds obtained from these animals.
Some people show poisoning symptoms following the ingestion of sea urchin gonads, especially during the breeding season. Some of these symptoms included allergies symptoms, as the first symptoms, nausea, diarrhea, vomiting, epigastric distress, severe headache, swelling of the lips and mouth, salivation, abdominal pain and some systemic symptoms such as hypotension, numbness and weakness. The most injuries by sea urchin can cause by contact to spines, which can create the various complications such as granuloma, synovitis, arthritis, edema, hyperkeratosis and even neuroma. Injuries by pedicellaria may cause severe pain, local edema, bleeding, lethargy, weakness, tingling, joint pain, aphonia, dizziness, syncope, general muscle paralysis, respiratory distress, hypotension and, infrequently death. After the injury by sea urchin, removing the spines and pedicellariae should be done to minimize the contact with the venom source, and subsequently the management of wounds and poisoning symptoms, as quickly as possible.
Conclusion: The venoms of some sea urchins have toxins and bioactive molecules that produce toxicity effects on their victims by a variety of mechanisms. Despite the various studies in toxinology field, on these animals, the comprehensive studies that led to the identification of pure toxins from their crude venoms are handful and unfinished and it is important to do further studies on this field, in the future
Neurotoxic Syndromes in Marine Poisonings a Review
No full textBackground: Marine neurotoxins as of Marine biotoxins are natural toxins that produced mainly by dinoflagellates, diatoms and several species of invertebrates and fish. Marine poisoning results from the ingestion of marine animals contain these toxins and causes considerable adverse effects. Materials and methods: This review provides some facts about the structures of marine neurotoxins, their molecular target and pharmacology, analytical methods for their detection and quantitation, diagnosis and laboratory testing, clinical manifestations, as well as prevention and treatment, if were obtainable. Furthermore, we focus on marine poisoning and various associated neurological syndromes like ciguatera, tetrodotoxin poisoning, and paralytic shellfish poisoning, after ingestion of the common marine toxins. Results: A number of neurotoxins that prescribed according to their potency (LD50) are: Maitotoxin, Ciguatoxins and Palytoxin, Tetrodotoxin and Saxitoxin, Brevetoxins, Azaspiracid, Yessotoxin, Cooliatoxin, Domoic acid and Conotoxins, Respectively. The primary target of most marine neurotoxins is voltage gated sodium channels and the resulting block of ion conductance through these channels. Moreover, these compounds interact with voltage-gated potassium and calcium channels and modulate the flux of stated ions into many cell types. As well, the target recognized for palytoxin is the Na+- K+ /ATPase. Conclusion: Results of reviewed studies revealed that, the Ciguatera is the commonest syndrome of marine poisoning, but is rarely lethal. Puffer fish poisoning results from the ingestion of fish containing tetrodotoxin and paralytic shellfish poisoning are less common, but have a higher fatality rate than ciguatera. Despite their high toxicity, no much research has been done on some of the toxins, like maitotoxin. In addition, there have remained unknown the pharmacological effects, mechanism of action and molecular target of some toxins such as Cooliatoxin and Ostreotoxins, Which could be the subject of the research in Future, or perhaps a new generation of drugs
The Sea, the Future Pharmacy
No full textBackground: The oceans as ‘mother of origin of life’ are a unique source that provide a various collection of natural products from sponges, tunicates, bryozoans, algae and molluscs as well as cyanobacteria and the other marine organisms. In the past few decades, a significant number of marine natural products with potent pharmacological properties have been discovered from these organisms. Here, we evaluate the history of drug discovery and theire development, from sea natural compounds, providing an outlook into the future. Material and Methods: For our aims, we collected the data for this review by searcheing pubmed (in 2014. 26.06), Marine Lit in addition to archives of ISMJ site through google. Search terms were “marine venoms to drugs” and “marine bioactive compounds” for pubmed, and a total of 69 papers were found, that 50 more related articles were selected. From Search terms of “marine bioactive compounds to drugs” and “marine bioactive compounds” in Marine Lit were obtained, 67 and 105 English-language papars, respectevily that in the end 99 articles were selected. In addition from search for “marine bioactive compounds in bpums or ISMJ” 11 related publications were selected. Results: At the present time, specific bioactive compounds such as cytarabine are accessible in market some of them are present in different phases of the clinical trials, Phase I, Phase II or Phase III , as wll as in the preclinical pipeline, or either expected to be approved soon. Many marine products are useful for cancer, chronic pains, infectious diseases, acquired immune deficiency syndrome (AIDS), arthritis, inflammations, and the other therapeutic paybacks. Conclusion: The authors believe that the sea can be a promising drug discovery for patients who have disappointed and give up of land resources. History of these compounds shows that initial efforts that led to the isolation of active compounds can be the start point for the next stage of their development. Therefore, any research with a certain purpose, though seemingly small, can be a preface to the discovery of a new drug. A comparison as the antiquity of a few decades the pharmaceutical science with marine resources, than their several thousand years antiquity in the mainland, Can guess “What has accelerated the speed of their progress”
Hematological parameters on the effect of the jellyfish venom Cassiopea andromeda in animal models
No full textFor the first time, we previously recorded an enormous population of the Cassiopea andromeda jellyfish that had increased dramatically from Bushehr coasts of Iran. The sub-acute toxicity of the jellyfish venom in rat organs was correspondingly carried out. The data presented in this paper relate to the in vivo and in vitro hematological effects of this venomous species of jellyfish venom
Medical Management in Stonefish Envenomation in Bushehr Port
No full textBackground: The Persian Gulf is one of the best places to find tropical venomous animals. The second cause of marine injuries in the Persian Gulf region is stonefish, it seems that the medical practitioners in this region are not familiar with the medical management of stonefish envenomationon. Materials and methods: A total of 16 patients with stonefish envenomation were serially examined in emergency rooms of academic hospitals of Boushehr port and Delvar clinic. In these patients local and systemic manifestations, first aid management and therapeutic interventions were evaluated. Results: The most common sites of injury were lower extremity (14 cases) and upper extremities (2 cases). The most common prescribing medication for relief of pain was injection of local lidocaine. The second and third most common prescribed drugs were parenteral antihistamines and corticosteroids, respectively. Hot water was not used in any of patients. Only in 2 cases antibiotic were given, whereas tetabolin was not prescribed in any of them. Conclusion: Although the most effective pain relieving intervention for stonefish envenomation, it was not used in injured patients in the current study. Likewise, tetabolin was not used. The medical practitioners should be encouraged to use immersion of the injured site in hot water, injection of local lidocaine without adrenalin, tetabolin injection and prophylactic broad spectrum antibiotics in stonefish envenomation
Antioxidant and anticholinesterase properties of Echinometra mathaei and Ophiocoma erinaceus venoms from the Persian Gulf
No full textIntroduction: The Persian Gulf is home to a diverse range of marine life, including various species of fish, crustaceans, mollusks, and echinoderms. This study investigates the potential therapeutic properties of venoms from echinoderms in the Persian Gulf, specifically their ability to inhibit cholinesterases (Acetylcholinesterase and butyrylcholinesterase) and act as antioxidants.Methods: Four venoms from two echinoderm species, including the spine, gonad, and coelomic fluids of sea urchins, as well as brittle star venoms, were analyzed using various methods, including LD50 determination, protein analysis, antioxidant assays, GC-MS for secondary metabolite identification, and molecular docking simulations.Results and discussion: The study’s results revealed the LD50 of the samples as follows: 2.231 ± 0.09, 1.03 ± 0.05, 1.12 ± 0.13, and 6.04 ± 0.13 mg/mL, respectively. Additionally, the protein levels were 44.037 ± 0.002, 74.223 ± 0.025, 469.97 ± 0.02, and 104.407 ± 0.025 μg/mL, respectively. SDS-PAGE and total protein studies indicated that at least part of the venom was proteinaceous. Furthermore, the study found that the brittle star samples exhibited significantly higher antioxidant activity compared to other samples, including the standard ascorbic acid, at all tested concentrations. GC-MS analysis identified 12, 23, 21, and 25 compounds in the samples, respectively. These compounds had distinct chemical and bioactive structures, including alkaloids, terpenes, and steroids.Conclusion: These venoms displayed strong cholinesterase inhibitory and antioxidant activities, likely attributed to their protein content and the presence of alkaloids, terpenes, and steroids. Notably, the alkaloid compound C7 was identified as a promising candidate for further research in Alzheimer’s disease therapy. In conclusion, echinoderms in the Persian Gulf may hold significant potential for discovering novel therapeutic agents
Clinical manifestations and managements in jellyfish envenomation A systematic review
No full textBackground: The phylum Cnidarians have over nine thousand species that approximately, one hundred species are dangerous for humans. Annually, a large number of deaths were reported due to jellyfish stings. The manifestations depend on their species and kind of venoms, and include the local and systemic manifestations. A number of methods and compounds were used and under investigation for management of injuries with jellyfishes. Due to the lack of an integrated systematic review, the current study was done. Materials and Methods: The PubMed data bank was searched for the term “Jellyfish”. A total of 1677 papers were found. These papers were divided into three categories: medical, biomedical and biotechnological fields. The medical category was further divided into three subcategories comprising systemic manifestations, cutaneous manifestations and treatments for the stings of jellyfishes. The biomedical category was further subdivided into genomics, proteomics, and biology of venoms, mechanisms of actions and products of biomedical significance. In this part of systematic review, the medical aspects of injuries with jellyfishes were evaluated. Results: The clinical manifestations in jellyfish envenomation depend on their species and the nature of venoms. The most common clinical manifestations of jellyfish stings are cutaneous presentations like urticasia, erythema, swelling, vesicles and severe dermonectoric manifestations. Systemic manifestations were seen in the stings of box jellyfishes, Portuguese man-of-war and in Irukandji syndrome. The most common recommendations for jellyfish envenomation managements include decreasing the local effects of venom, prevention of the venomous nematocysts release, and Controlling of systemic reactions. Application of commercial vinegar (4 - 6% acetic acid), hot water immersion (HWI) (42 ° C for 20 minutes), ice packs, sea water rinsing for inactivating nematocysts, administration of topical and parenteral analgesics, corticosteroids , and antihistamines are the basics for treatments of jellyfish envenomations. The Anti-venom for jellyfishes can counteract the effects of venom. Conclusion: The cutaneous manifestations in jellyfish envenomation are the most common clinical presentation. There was no any conducted double-blind and controlled clinical trials for the management of jellyfish envenomation, the application of commercial vinegar (4 - 6% acetic acid), hot water, ice packs and sea water rinsing are the fundamentals of treatments in the stings of the jellyfishes
The Effect of Crude Extract of Turbo coronatus from the Persian Gulf on Serum Biochemical Parameters and Hematiological Parameters of Rats
No full text
