Adaptation of the fish juvenile growth test (OECD TG 215, 2000) to the marine species Dicentrarchus labrax.

The OECD TG 215 method (2000) (C.14 method of EC Regulation 440/2008) was developed on the rainbow trout (Oncorynchus mykiss) to assess chronic toxicity (28d) of chemicals on fish juveniles. It contemplates to use other well documented species identifying suitable conditions to evaluate their growth. OECD proposes the European sea bass (Dicentrarchus labrax, L. 1758) as Mediterranean species among vertebrates recommended in the OECD guidelines for the toxicity testing of chemicals. In this context, our study is aimed to proposing the adaptation of the growth test (OECD TG 215, 2000) to D. labrax. For this purpose toxicity tests were performed with sodium dodecyl sulfate, a reference toxicant commonly used in fish toxicity assays. The main aspects of the testing procedure were reviewed: fish size (weight), environmental conditions, dilution water type, experimental design, loading rate and stocking density, feeding (food type and ration), test validity criteria. The experience gained from growth tests with the sea bass allows to promote its inclusion among the species to be used for the C.14 method.

A case of peduncolated Brunner's gland hamartoma.

AIM: To report a case of Brunner's gland hamartoma (BGH) in patient treated with surgical resection. CASE REPORT: A 73 years old male patient that was admitted with melena. The preoperative investigations suggested a suspected duodenal large polypoidal mass. A local resection was performed. Surgical resection is actually considered the best treatment for this lesion. DISCUSSION: Brunner's glands were first described by Brunner in 1688. Hamartoma designates an excessive focal overgrowth of mature normal cells and tissues, composed of identical cellular elements. Most patients with Brunner's gland hamartoma are asymptomatic or have nonspecific complaints. CONCLUSION: BHG is a rare tumor arising from the Brunner's gland of the duodenum, considered entirely benign, although there have been occasionally reports of malignant foci inside.

Concomitant small cell carcinoma and adenocarcinoma of the gallbladder: a case report.

Gallbladder cancer is the most frequent neoplasm originating from the extrahepatic biliary tract, with characteristics of late presentation and rapid progression. We report the case of a 58 years old female patient with concomitant small cell carcinoma and adenocarcinoma of the gallbladder, incidentally reported after a cholecystectomy performed for cholelithiasis. According to the stage of the disease, we performed a second surgical procedure with laparotomy, resection of the liver parenchyma IVb and V and regional lymphadenectomy. After multidisciplinary team consultation, the patient was not administrated chemotherapy. She was well followed up at our department and she is alive 12 month after surgery.

Can Artemia Hatching Assay Be a (Sensitive) Alternative Tool to Acute Toxicity Test?

Artemia sp. is extensively used in ecotoxicity testing, despite criticisms inherent to both acute and long-term tests. Alternative endpoints and procedures should be considered to support the use of this biological model. The hatching process comprises several developmental steps and the cyst hatchability seems acceptable as endpoint criterion. In this study, we assessed the reliability of the hatching assay on A. franciscana by comparing with acute and long-term mortality tests, using two chemicals: Diethylene Glycol (DEG), Sodium Dodecyl Sulphate (SDS). Both DEG and SDS tests demonstrated a dose dependent hatching inhibition. The hatching test resulted more sensitive than acute mortality test and less sensitive than the long-term one. Results demonstrate the reliability and high sensitivity of this hatching assay on a short time lag and support its useful application in first-tier risk assessment procedures.

Fissurectomy combined with anoplasty and injection of botulinum toxin in treatment of anterior chronic anal fissure with hypertonia of internal anal sphincter: a pilot study.

BACKGROUND: In patients affected by anterior chronic anal fissure (CAAF) with hypertonia of the internal anal sphincter (IAS), the role of IAS hypertonia remains unclear. The aim of this study was to evaluate the efficacy of fissurectomy combined with advancement flap and IAS injection of botulinum toxin in healing the CAAF with hypertonia of IAS resistant to medical therapy. METHODS: Ten consecutive patients were enrolled. Anorectal manometry was performed preoperatively and at 6 months. CAAF with hypertonia was defined as those associated with maximum resting pressure (MRP) values higher than 85 mmHg. All patients underwent fissurectomy and anoplasty with advancement skin flap combined with the intrasphincter injection of 30 UI of botulinum toxin. Complete healing, MRP changes, relief of symptoms and immediate and long-term complications were recorded. RESULTS: Complete healing was observed in all patients within 30 days of the operation. The intensity and duration of pain post-defecation was reduced significantly starting from the first defecation. In all subjects, the preoperative MRP values were significantly reduced at 6 months. One month after surgery, three patients reported anal incontinence, two of them had complained preoperatively. The only postoperative complications were minor. CONCLUSIONS: Fissurectomy combined with advancement flap and intrasphincter injection of botulinum toxin results in complete healing, significant MRP reduction and full relief of symptom in all patients, thus it represents a valid procedure in preventing the occurrence of anal incontinence.

[Adrenal incidentaloma: case report and synthesis of indication and thresholds of surgery therapy]. / Un caso di incidentaloma surrenalico: sintesi delle indicazioni e limiti della terapia chirurgica.

With the term of incidental mass, any mass is identified, occasionally discovered with imaging techniques, in the absence of specific symptoms. In 1982, the term "incidentaloma" was introduced to indicate lesions detected on adrenal regions, found unexpectedly. The incidence percentages vary from 0.6%-3% in CT followed by other indications , to 10% and 25% in all patients who underwent an ultrasound, CT or MRI. An appropriate diagnostic protocol is mandatory to identify and to choose the proper treatment for the functioning lesions, as well as the malignant or potentially malignant lesions (1, 2). Incidentalomas with diameters under 1 cm seem to not have a pathologic significance, and are considered like manifestation of the gland involution in advanced-age subjects, and can remain unseen for a long time. The use of diagnostic imaging techniques has made it possible to identify these masses, even those of small size, in the course of diagnostic surveys done under various guidelines. The mass dimensions are a fundamental parameter used to distinguish benign lesions from malign ones (2, 3). Most Authors suspect malignity in masses above 5-6 cm, while considering those with a diameter under 3 cm to be benign. Whereas the rest remain undefined, thereby valued and treated according to criteria not perfectly established.

Potential transfer of aquatic organisms via ballast water with a particular focus on harmful and non-indigenous species: A survey from Adriatic ports.

Ballast water discharges may cause negative impacts to aquatic ecosystems, human health and economic activities by the introduction of potentially harmful species. Fifty untreated ballast water tanks, ten in each port, were sampled in four Adriatic Italian ports and one Slovenian port. Salinity, temperature and fluorescence were measured on board. Faecal indicator bacteria (FIB), phyto- and zooplankton were qualitatively and quantitatively determined to identify the species assemblage arriving in ballast water. FIB exceeded the convention standard limits in 12% of the sampled tanks. Vibrio cholerae was not detected. The number of viable organisms in the size groups (minimum dimension) <50 and ≥10 µm and ≥50 µm resulted above the abundances required from the Ballast Water Management Convention in 55 and 86% of the samples, respectively. This is not surprising as unmanaged ballast waters were sampled. Some potentially toxic and non-indigenous species were observed in both phyto- and zooplankton assemblages.

[Surgical management of medullary thyroid carcinoma. Personal experience]. / Trattamento chirurgico del carcinoma midollare della tiroide. Esperienza personale.

INTRODUCTION: Medullary Thyroid Carcinoma (MTC) is a rare malignancy of the parafollicular C cells of the thyroid gland. Aim of our study is reporting retrospective analysis of our experience about the surgical treatment of MTC, especially pointing on lymphadenectomy. PATIENTS AND METHODS: from January 2000 to March 2006, were performed 546 thyroidectomy, 6 of them for MTC (1.09%): 5 sporadic and 1 familiar. All the patients were operated with standard technique (total thyroidectomy) and submitted to endocrinologic and instrumental follow-up. RESULTS: in our experience, we do not registered early or late complications as bleeding, laryngeal nerves lesions and parathyroid lesions or intra-postoperative deaths. DISCUSSION: MTC occurs sporadically or as part of the multiple endocrine neoplasia type 2 (MEN 2 a/b) syndromes in patients who have inherited a mutation in the RET proto-oncogene. The diagnosis is made by fine needle aspiration biopsy (FNAB) and by measuring calcitonin levels in the blood. Primary treatment consists of surgical resection including a total thyroidectomy, central neck nodal dissection and functional lateral neck nodal dissections. Most patients with a palpable primary tumour have nodal disease at the time of operation, and nodal involvement is often bilateral. CONCLUSIONS: adequate resection of the primary tumour and cervical lymph nodes is important to optimize outcome and minimize the risk of recurrent disease. Following primary surgical resection, more than 50% of the patients will have recurrent disease with persistent elevation of calcitonin levels. Currently, there is no adequate systemic therapy for recurrent disease. Surgical reoperation or conservative observation are the best available options.

Fitness Evaluation of Ruditapes philippinarum Exposed to Ni.

In this study, long-term effects of Ni, a widespread heavy metal in the aquatic ecosystems, have been determined on growth and lethality of the clam Ruditapes philippinarum, a known bioindicator of the marine environment. Three/four-month-old bivalves have been exposed to different concentrations of Ni dissolved in synthetic seawater. Growth and lethality as endpoints after 28 days of treatment have been observed. Obtained results are the following: EC25 = 3.97 ± 0.94 and 9.45 ± 1.59 mg/L and NOEC = 1.56 and 6.25 mg/L for growth and mortality, respectively. Moreover, this study can be considered a new tool for the evaluation of fitness of bivalve clam, together with other biological responses following to the biological impacts of metal pollution.

Ecotoxicity of diethylene glycol and risk assessment for marine environment.

Diethylene glycol (DEG) is a chemical compound used during offshore oil activities to prevent hydrate formation, and it may be released into the sea. A full ecotoxicological characterization is required according to European and Italian regulations for chemical substances. We have evaluated long-term toxic effects of DEG on indicator species of the marine environment as algae (Phaeodactylum tricornutum), crustaceans (Artemia franciscana), molluscs (Tapes philippinarum) and fish (Dicentrarchus labrax). A range of no observed effect concentrations (365-25,000 mg/L) has been identified. Based on the toxicity results and the ratio between predicted environmental concentration and predicted no-effect concentration, we have estimated the maximum allowable value of DEG in the marine environment.