Search results for: G. Arienti

Items from 1 to 8 out of 8 results

chapter

Optimization of HV LDMOS devices accounting for packaging interaction

G. Arienti, I. Imperiale, S. Reggiani, E. Gnani, more

2015 IEEE 27th International Symposium on Power Semiconductor Devices & IC's (ISPSD) > 305 - 308

2015 IEEE 27th International Symposium on Power Semiconductor Devices & IC's (ISPSD)

The sensitivity of HV RESURF LDMOS transistors to parasitic charging in molding compound is investigated in this work by incorporating the passivation and encapsulation layers in the TCAD setup and implementing the conductivity losses in the mold. The role played by field plates and multiple metal/poly-silicon floating rings on the overall RESURF are revisited by focusing on the breakdown voltage...

article

Electrochemical assay of human haemoglobin S-nitrosylation by nitrosocysteine

C. P. Palmerini, R. Palombari, G. Arienti

Amino Acids > 2003 > 25 > 1 > 59-62

Summary. Oxyhaemoglobin (oxyHb) and methaemoglobin (metHb) react with S-nitrosocysteine (CysNO) to form nitroso derivatives. We test this reaction with a new method for evaluating transnitrosation reaction. The assay exploits an amperometric sensor developed in our laboratory. The results we obtain are in good agreement with those reported by others, although at much higher sensitivity, indicating...

article

Electrochemical assay of human haemoglobin S-nitrosylation by nitrosocysteine

C. P. Palmerini, R. Palombari, G. Arienti

Amino Acids > 2003 > 25 > 1

Summary.Oxyhaemoglobin (oxyHb) and methaemoglobin (metHb) react with S-nitrosocysteine (CysNO) to form nitroso derivatives. We test this reaction with a new method for evaluating transnitrosation reaction. The assay exploits an amperometric sensor developed in our laboratory. The results we obtain are in good agreement with those reported by others, although at much higher sensitivity, indicating...

article

Progesterone-induced increase of sperm cytosolic calcium is enhanced by previous fusion of spermatozoa to prostasomes

G. Arienti, A. Nicolucci, F. Santi, E. Carlini, more

Cell Calcium > 2001 > 30 > 3 > 222-227

Ejaculated spermatozoa must undergo a number of modifications before becoming able to fertilize the oocyte. The interaction of sperm with other semen components may influence these phenomena; human semen contains vesicles of prostatic origin, called pro stasomes that may fuse to sperm at slightly acidic to neutral pH values.Prostasomes contain calcium and it has been demonstrated that their fusion...

article

Increase of human spermatozoa intracellular Ca2+concentration after fusion with prostasomes

C.A. Palmerini, E. Carlini, A. Nicolucci, G. Arienti

Cell Calcium > 1999 > 25 > 4 > 291-296

Prostasomes are membranous vesicles (150–200 nm diameter) present in human semen. They are secreted by the prostate gland and contain large amounts of cholesterol, sphingomyelin and calcium, and some of their proteins are enzymes. Prostasomes are involved in a number of biological functions. In previous work, we discovered that prostasomes may fuse to sperm at neutral or at slightly acidic pH values...

article

Fatty Acid Pattern of Human Prostasome Lipid

G. Arienti, E. Carlini, A. Polci, E.V. Cosmi, more

Archives of Biochemistry and Biophysics > 1998 > 358 > 2 > 391-395

Prostasomes are organelles of prostatic origin found in human semen. Their average diameter is about 150 nm and they appear as a lipoprotein membrane surrounding less organized material. Their lipid composition is peculiar, having much cholesterol and sphingomyelin. On the other hand, many of their proteins possess catalytic activity and are involved in the immune response. In previous work, we have...

article

Fusion of Human Sperm to Prostasomes at Acidic pH

G. Arienti, E. Carlini, C.A. Palmerini

The Journal of Membrane Biology > 1997 > 155 > 1 > 89-94

Abstract. Prostasomes are membranous vesicles (150200 nm diameter) present in human semen. They are secreted by the prostate and contain large amounts of cholesterol, sphingomyelin and Ca2+. In addition, some of their proteins are enzymes. Prostasomes enhance the motility of ejaculated spermatozoa and are involved in a number of additional biological functions. The possibility that they may fuse to...

article

Formylcolchicine bound to lactosaminated serum albumin is a more active antifibrotic agent than free colchicine

C.A. Palmerini, C. Saccardi, A. Floridi, G. Arienti

Clinica Chimica Acta > 1996 > 254 > 2 > 149-157

Liver fibrosis was induced by chronically (7 weeks) administering CCl ₄ to rats. Animals were divided into four groups: (a) controls, (b) treated with CCl ₄ alone, (c) treated with CCl ₄ and colchicine and (d) treated with CCl ₄ and formyl-colchicine bound to lactosaminated serum albumin (FC-LASA). Liver dysfunction was monitored by biochemical tests (alkaline phosphatase...

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