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Pessia B, Romano L, Carlei F, Lazzari S, Vicentini V, Giuliani A, Schietroma M. Preoperative sarcopenia predicts survival after hepatectomy for colorectal metastases: a prospective observational study. Eur Rev Med Pharmacol Sci 2021; 25:5619-5624. [PMID: 34604954 DOI: 10.26355/eurrev_202109_26781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The surgical approach to colorectal liver metastases has highly improved the survival rates in metastatic colorectal cancer patients. Since sarcopenia estimates the physiologic reserve of an individual patient, it is considered a surrogate marker of patient frailty, and the selection of appropriate candidates for LR could be crucial to maximize the benefits derived from surgery. The present study investigated the impact of sarcopenia as a prognostic factor after LR from CRLM. PATIENTS AND METHODS The study retrospectively analyzed 74 patients. Skeletal Muscle Mass at the third lumbar vertebra in the inferior direction was quantified using enhanced computed tomography scans. The patients were divided into two subgroups, with and without sarcopenia, based on median Skeletal Muscle Index. RESULTS The study included 48 Sarcopenic patients and 26 Non Sarcopenic patients. The median follow-up considered for the patients was 32 months. Median SMI was 39.3 and 52.7 cm2/m2, respectively. The OS rate was significantly different between the two groups. Preoperative sarcopenia resulted in worse OS up to 48 months. CONCLUSIONS Sarcopenia represents a negative prognostic factor as it is associated with poor postoperative OS. Future programs focused on remediating to the preoperative sarcopenic status of colorectal liver metastatic patients should be implemented.
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Affiliation(s)
- B Pessia
- Departement of Hepato-Bilio-Pancreatic Surgery, San Salvatore Hospital, L'Aquila, Italy.
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Lazzari S, Nicoud L, Jaquet B, Lattuada M, Morbidelli M. Fractal-like structures in colloid science. Adv Colloid Interface Sci 2016; 235:1-13. [PMID: 27233526 DOI: 10.1016/j.cis.2016.05.002] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 04/13/2016] [Accepted: 05/02/2016] [Indexed: 01/20/2023]
Abstract
The present work aims at reviewing our current understanding of fractal structures in the frame of colloid aggregation as well as the possibility they offer to produce novel structured materials. In particular, the existing techniques to measure and compute the fractal dimension df are critically discussed based on the cases of organic/inorganic particles and proteins. Then the aggregation conditions affecting df are thoroughly analyzed, pointing out the most recent literature findings and the limitations of our current understanding. Finally, the importance of the fractal dimension in applications is discussed along with possible directions for the production of new structured materials.
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Affiliation(s)
- S Lazzari
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77, Massachusetts Avenue, Cambridge, MA 02139, USA
| | - L Nicoud
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - B Jaquet
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - M Lattuada
- Adolphe Merkle Institute, University of Fribourg,, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - M Morbidelli
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.
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Lazzari S, Jaquet B, Colonna L, Storti G, Lattuada M, Morbidelli M. Interplay between Aggregation and Coalescence of Polymeric Particles: Experimental and Modeling Insights. Langmuir 2015; 31:9296-9305. [PMID: 26275145 DOI: 10.1021/acs.langmuir.5b02503] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In the present work, the aggregation behavior of polymeric particles possessing different glass transition temperatures (i.e., different "softnesses") has been studied to shed light on the interplay between aggregation and coalescence. In particular, the time evolution of the clusters hydrodynamic and gyration radii as well as of their structure factor has been monitored. With the help of an ad hoc developed deterministic model, based on population balance equations, it was possible to establish a link between the experimentally obtained light scattering data and the predicted particle size distribution. The simplicity of the model, involving one single adjustable parameter based on the coalescence characteristic time, allowed us to obtain a good accordance between simulations and experimental results with little computational effort.
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Affiliation(s)
- S Lazzari
- Department of Chemical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - B Jaquet
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - L Colonna
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - G Storti
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - M Lattuada
- Univ Fribourg , Adolphe Merkle Institute, Chemin des Verdiers 4, CH-1700 Fribourg, Switzerland
| | - M Morbidelli
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
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Legrand R, Prieur F, Marles A, Nourry C, Lazzari S, Blondel N, Mucci P. Respiratory Muscle Oxygenation Kinetics: Relationships with Breathing Pattern during Exercise. Int J Sports Med 2007; 28:91-9. [PMID: 16838222 DOI: 10.1055/s-2006-924056] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This work aimed to investigate accessory respiratory muscle oxygenation (RMO(2)) during exercise, using near-infrared spectroscopy, and to study relationships between RMO(2) kinetics and breathing parameters. Nineteen young males (19.3 +/- 1.5 years) performed a maximal incremental test on a cycle ergometer. Changes in breathing pattern were characterized by accelerated rise in the breathing frequency (f (Racc)), plateau of tidal volume (V (Tplateau)) and inflection point in the V. (E)/V (T) relationship (V. (E)/V (T inflection)). First and second ventilatory thresholds (VT1 and VT2) were also determined. RMO (2) kinetics were monitored by NIRS on the serratus anterior. During exercise, all subjects showed reduced RMO (2) (deoxygenation) with a breakdown (B-RMO(2)) at submaximal workload (86 % .VO(2max)). .VO(2) corresponding to B-RMO (2) and to f (Racc), V (Tplateau), .V(E)/V(T inflection), or VT2 were not different. Relationships were found between the .VO(2) at B-RMO(2) and the .VO(2) at f (Racc) (r = 0.88, p < 0.001), V (Tplateau) (r = 0.84, p < 0.001), V. (E)/V (T inflection) (r = 0.58, p < 0.05) or VT2 (r = 0.79, p < 0.001). The amplitude of RMO(2) at maximal workload was weakly related to .VO(2max) (r = 0.58, p < 0.05). B-RMO (2) seems to be due to the change in breathing pattern and especially to the important rise in breathing frequency at the VT2 exercise level. Moreover, subjects who exhibit higher .VO(2max) also exhibit a higher decrease in respiratory muscle oxygenation during exercise.
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Affiliation(s)
- R Legrand
- Laboratoires d'Etudes de la Motricité Humaine EA 3608, Faculté des Sciences du Sport et de l'Education Physique, Université de Lille 2, Ronchin, France
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Ferrari E, Grandi R, Lazzari S, Saladini M. Hg(II)-coordination by sugar-acids: Role of the hydroxy groups. J Inorg Biochem 2005; 99:2381-6. [PMID: 16266751 DOI: 10.1016/j.jinorgbio.2005.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Revised: 09/06/2005] [Accepted: 09/15/2005] [Indexed: 11/30/2022]
Abstract
A solution study on the ability of some derivatised sugars [glucuronic acid (GluA), galacturonic acid (GalA) and glucosaminic acid (GlNA)] to complex the Hg(II) ion is reported. The stability constants of the complex species were determined by potentiometric measurements while (1)H NMR experiments allow to define the coordination sites of sugar molecules. GluA coordinates the metal ion through the carboxylic oxygen and the O-4 hydroxyl group and is found to form more stable complexes with respect to GalA in which metal ligation is from the carboxylic oxygen and the O-5 ring oxygen. GlNA forms stable complexes chelating Hg(II) ion through carboxylic oxygen and the alpha-amino group. The ternary 2,2'-bipyridine containing systems were also investigated by means of potentiometric studies. The ML(2) complexes were also isolated in the solid state and characterised by IR spectroscopy.
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Affiliation(s)
- E Ferrari
- Department of Chemistry, University of Modena and Reggio Emilia, via Campi 183, 41100 Modena, Italy
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Affiliation(s)
- P D Ghys
- UNAIDS, Avenue Appie 20, CH-1211 Geneva 27, Switzerland.
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Walker N, Garcia-Calleja JM, Heaton L, Asamoah-Odei E, Poumerol G, Lazzari S, Ghys PD, Schwartländer B, Stanecki KA. Epidemiological analysis of the quality of HIV sero-surveillance in the world: how well do we track the epidemic? AIDS 2001; 15:1545-54. [PMID: 11504987 DOI: 10.1097/00002030-200108170-00012] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The objective of this paper was to analyse the quality of HIV/AIDS sentinel surveillance systems in countries and the resulting quality of the data used to make estimates of HIV/AIDS prevalence and mortality. METHODS Available data on sero-surveillance of HIV/AIDS in countries were compiled in the process of making the end of 1999 estimates of HIV/AIDS. These data came primarily from the HIV/AIDS Surveillance Database developed by the United States Census Bureau, from a database maintained by the European Centre for the Epidemiological Monitoring of AIDS and all country reports on sentinel surveillance that had been provided to World Health Organization or UNAIDS. Procedures were developed to score quality of surveillance systems based on four dimensions of quality: timeliness and frequency; appropriateness of groups; consistency of sites over time; and coverage provided by the system. In total, the surveillance systems from 167 countries were analysed. RESULTS Forty-seven of the 167 countries whose surveillance systems were rated were judged to have fully implemented sentinel surveillance systems; 51 were judged to have systems that had some or most aspects of a good HIV surveillance system in place and 69 were rated as having poorly functioning or non-existent surveillance systems. CONCLUSION This analysis suggests that the quality of HIV surveillance varies considerably. The majority of countries most affected by HIV/AIDS have systems that are providing sufficient sero-prevalence data for tracking the epidemic and making reasonable estimates of HIV prevalence. However, many countries have poor systems and strengthening these is an urgent priority.
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Affiliation(s)
- N Walker
- United Nations Joint Programme on HIV/AIDS, Geneva, Switzerland.
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Marengo M, Aprile C, Bagnara C, Bolzati C, Bonada C, Candini G, Casati R, Civollani S, Colombo FR, Compagnone G, Del Dottore F, Di Guglielmo E, Ferretti PP, Lazzari S, Minoia C, Pancaldi D, Ronchi A, Sanità di Toppi G, Saponaro R, Torregiani T, Uccelli L, Vecchi F, Piffanelli A. Quality control of 99Mo/99Tcm generators: results of a survey of the Radiopharmacy Working Group of the Italian Association of Nuclear Medicine (AIMN). Nucl Med Commun 1999; 20:1077-84. [PMID: 10572919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A multicentre survey of the quality control of 99Tcm generators has been completed: 245 generators from seven different commercial sources were tested over a period of 2 years. The results indicate that the mean pH of the eluates was 5.8 +/- 0.6; the aluminium contents were typically < 10 ppm; the radiochemical purity was 99.8 +/- 0.4% and the median 99Mo content was 3.8 x 10(-4) percent. The elution profiles gave a volume of 1.9 ml to obtain 50% of the total eluted activity and of 4.9 ml to obtain 95%. Other radionuclide impurities and heavy metal breakthrough were evaluated by graphite furnace absorption spectrometry and inductively coupled plasma mass spectrometry. National guidelines for the standardization of radiopharmacy procedures are currently being compiled.
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Affiliation(s)
- M Marengo
- Servizio di Fisica Sanitaria, Ospedale S. Orsola-Malpighi, Bologna, Italy
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Riva P, Franceschi G, Frattarelli M, Lazzari S, Riva N, Giuliani G, Casi M, Sarti G, Guiducci G, Giorgetti G, Gentile R, Santimaria M, Jermann E, Maeke HR. Loco-regional radioimmunotherapy of high-grade malignant gliomas using specific monoclonal antibodies labeled with 90Y: a phase I study. Clin Cancer Res 1999; 5:3275s-3280s. [PMID: 10541375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A Phase I radioimmunotherapy trial was conducted in which radioconjugated monoclonal antibody (MAb) was directly infused into the tumor or postoperative tumoral bed in patients with high-grade malignant glioma. BC-4, a murine MAb that recognizes tenascin, was used in these studies. The MAb was labeled with 90Y, a pure beta emitter with maximum energy of 2.284 MeV, which can penetrate into tissue up to 0.5-0.7 cm. Stable 90Y-labeled MAb conjugates were prepared using the chelator p-isothiocyanatobenzyl derivative of diethylenetriaminepentaacetic acid (ITC-Bz-DTPA), obtaining >95% labeling efficiency and conserving the antibodies' immunoreactivity (>85%). Twenty patients, 2 with anaplastic astrocytoma and 18 with glioblastoma, were included in the study. All of the patients had been treated previously with conventional therapies (surgery, external radiotherapy, and chemotherapy) and presented with progressive disease not amenable to further treatment. A dose-escalation study was performed using doses ranging from 5-30 mCi (185-1110 MBq) of 90Y-labeled MAb BC-4. The protein dose of MAb was always 1 mg. Three patients were treated at the 5, 10, 15, and 20 mCi levels, and the 25- and 30-mCi doses were each administered to 4 patients. Systemic toxicity was completely absent in all of the patients. The maximum tolerated dose to the brain was 25 mCi (925 MBq). The average dose to the tumor was 3200 cGy/mCi. Doses to the liver, bone marrow, and kidneys were below 10 cGy/mCi in all of the cases. Biodistribution studies demonstrated that the 90Y-labeled MAb accreted exclusively in the neoplastic area without any diffusion into the normal brain or other normal organs. No clinical responses were recorded because of the very advanced stage of disease at the time of radioimmunotherapy.
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Affiliation(s)
- P Riva
- Department of Nuclear Medicine, Maurizio Bufalini Hospital, Cesena, Italy
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Abstract
During eye tracking of a self-moved target, human subjects' performance differs from eye-alone tracking of an external target. Typical latency between target and eye motion onsets is shorter, ocular smooth pursuit (SP) saturation velocity increases and the maximum target motion frequency at which the SP system functions correctly is higher. Based on a previous qualitative model, a quantitative model of the coordination control between the arm motor system and the SP system is presented and evaluated here. The model structure maintains a high level of parallelism with the physiological system. It contains three main parts: the eye motor control (containing a SP branch and a saccadic branch), the arm motor control and the coordination control. The coordination control is achieved via an exchange of information between the arm and the eye sensorimotor systems, mediated by sensory signals (vision, proprioception) and motor command copy. This cross-talk results in improved SP system performance. The model has been computer simulated and the results have been compared with human subjects' behavior observed during previous experiments. The model performance is seen to quantitatively fit data on human subjects.
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Affiliation(s)
- S Lazzari
- Dipartimento di Informatica e Sistemistica, Università di Pavia, Italy
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Abstract
Several studies have shown that humans track a moving visual target with their eyes better if the movement of this target is directly controlled by the observer's hand. The improvement in performance has been attributed to coordination control between the arm motor system and the smooth pursuit (SP) system. In such a task, the SP system shows characteristics that differ from those observed during eye-alone tracking: latency (between the target-arm and the eye motion onsets) is shorter, maximum SP velocity is higher and the maximum target motion frequency at which the SP can function effectively is also higher. The aim of this article is to qualitatively evaluate the behavior of a dynamical model simulating the oculomotor system and the arm motor system when both are involved in tracking visual targets. The evaluation is essentially based on a comparison of the behavior of the model with the behavior of human subjects tracking visual targets under different conditions. The model has been introduced and quantitatively evaluated in a companion paper. The model is based on an exchange of internal information between the two sensorimotor systems, mediated by sensory signals (vision, arm muscle proprioception) and motor signals (arm motor command copy). The exchange is achieved by a specialized structure of the central nervous system, previously identified as a part of the cerebellum. Computer simulation of the model yielded results that fit the behavior of human subjects observed during previously reported experiments, both qualitatively and quantitatively. The parallelism between physiology and human behavior on the one hand, and structure and simulation of the model on the other hand, is discussed.
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Affiliation(s)
- J L Vercher
- UMR CNRS, Mouvement et Perception, Faculté des Sciences du Sport, Université de la Méditerranée, Marseille, France.
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Sansoni G, Corini S, Lazzari S, Rodella R, Docchio F. Three-dimensional imaging based on Gray-code light projection: characterization of the measuring algorithm and development of a measuring system for industrial applications. Appl Opt 1997; 36:4463-4472. [PMID: 18259237 DOI: 10.1364/ao.36.004463] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
A three-dimensional (3-D) imaging system based on Gray-code projection is described; it is thought to be used as an integration to the already developed profilometer based on the projection of multifrequency gratings. The Gray-code method allows us to evaluate the 3-D profile of objects that present even marked discontinuities of the surface, thus increasing the flexibility of the measuring system as to the topology of the objects that can be measured. The basic aspects of Gray-code projection for 3-D imaging and profiling are discussed, with particular emphasis devoted to the study of the resolution of the method and to the analysis of the systematic errors. The results of this study allow us to determine the optimal setting of the parameters of the measurement and to develop a suitable calibration procedure. The procedures for implementing the Gray-code method are presented, and some interesting experimental results are reported. Calibration of the system reveals an accuracy of 0.2 mm, corresponding to 0.1% of the field of view.
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Grassi M, Lazzari S, Sottili S. [Crenotherapy in sports medicine: the state of the art]. Clin Ter 1996; 147:645-52. [PMID: 9296924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The existing relationship linking thermal and sport medicine has developed with time. This is shown by the established beneficial effects of thermal treatments (mineral waters, mud baths, balneotherapy, aerosol applications) in a wide range of sport and non-sport related injuries. The muscle fatigue syndrome is a condition particularly worrisome for sports practising individuals. This condition impairs the cardiovascular system, as well as hematologic, renal and gastrointestinal functions, acting via biochemical and metabolic modifications of the organism, which have effects also on the psyche of the subject. The treatment of this syndrome includes the use of specific mineral waters, which underscores that the correct hydration of the organisms is a precondition to achieve high performance levels. Traumas involving muscles and skeletal segments, and precocious arthrosis occur with higher frequency in sportsmen after continuous and intense stresses. Within the scope of rheumatology, mud-baths and balneotherapy have curative and rehabilitative potentials leading to a reduction, and often a disappearance, of pain with a faster recovery of the locomotory system. The gastrointestinal system is a target of psychic as well as physical stresses displaying symptoms or diseases which may be favourably addressed with the aid of mineral waters. This treatment has proved effective in secretory and motility dysfunctions of the biliary tree allowing a rapid functional recovery. Mineral water treatments are successfully employed in the treatment of urologic disturbance and ORL and dermatological pathologies, where local applications such as mud baths, balneotherapy, showers and aerosols, play a critical role.
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Affiliation(s)
- M Grassi
- Istituto di Idrologia Medica, Università degli Studi di Roma La Sapienza
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Grossi F, Fontana M, Conti R, Mastroianni S, Lazzari S, Messini F, Piccarreta U, Grassi M. [Motility of the gastric antrum and the gallbladder following oral administration of sulfate-bicarbonate]. Clin Ter 1996; 147:321-6. [PMID: 8925642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The authors evaluate the influence of a sulphate-bicarbonate mineral water on gastric emptying and cholecystic motility. Nine healthy volunteers drunk at settled intervals and with same procedures equal doses of mineral water and tap water on alternate days. Ultrasonographic evaluation of the gastric emptying and cholecystic volumes was performed before and after mineral water and top water drinks at settled intervals. The mean values of the gastric and the cholecystic volumes were calculated and compared at the single times. The results showed a significant colecystocinetic effect of the mineral water compared with tap water. No difference was observed in the gastric emptying with the mineral and tap water. Our work contributes to the knowledge of the pharmacodynamic effects of the mineral water employed and confirms its usefulness in the syndromes based on alterations in bile secretion and bile excretion in duodenum.
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Affiliation(s)
- F Grossi
- Istituto di Idrologia Medica, Università degli Studi di Roma, La Sapienza
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Assanelli D, Lazzari S, Moretti M, Maifredi G, Vignali MS, Turla C, Malossi C, Zywietz C. Comparison of 12-lead repolarization parameters during follow-up study in middle-aged sportsmen and in patients during acute myocardial infarction. J Electrocardiol 1996; 29 Suppl:73-7. [PMID: 9238381 DOI: 10.1016/s0022-0736(96)80023-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Consecutive electrocardiographic (ECG) analysis is very useful in acute coronary ischemia, but it is known that ECG patterns can be misleading in subjects with left ventricular hypertrophy, mainly during the repolarization phase. An automated system was developed to collect, store, and follow-up all heterogeneous data concerning a cohort of 1,898 subjects (1,039 men), 45-65 years old, 50% of whom were physically active. The reliability of several ECG markers of ischemia was tested during chronic follow-up study (1993-1995) in 23 healthy sedentary men without hypertension (group 1) recorded in our database, as well as in 9 subjects performing regular sporting activity (SA) (group 2). The same parameters were evaluated in the intensive care unit in nine patients affected by coronary artery disease, during either successful or unsuccessful thrombolytic therapy of acute myocardial infarction (AMI) (group 3). Twelve-lead ECGs were recorded, analyzed by the Hannover ECG system program, compressed, and stored according to the Standard Communication Protocol in each of the three groups. The changes in ST amplitude 20, 60, and 80 ms alter the J point were very small in each subject of groups 1 and 2, while upsloping from 1 to 10 mm in several leads was observed slowly, rapidly, or intermittently in group 3 patients during ischemia. The ST slope and the concordance of the T wave and ST amplitude were helpful in differentiating normal and SA subjects from AMI patients. These results, obtained in resting conditions, underline that the difference among ST-T abnormalities in subjects with left ventricular hypertrophy due to SA are consistently different from those observed in patients with AMI. The serial digital ECG can be helpful to underline these differences.
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Affiliation(s)
- D Assanelli
- University of Brescia, Elettronica Trentina, Italy
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Lazzari S, Giorgetti G, Turci B. Image correlation: Meaning in clinical radioimmunotherapy dosimetry for treatment planning. Radiother Oncol 1995. [DOI: 10.1016/0167-8140(96)80561-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Grassi M, Lazzari S, Palmisano P, Nocchi S, Fontana M, Raffa S, Antonelli M. [Evaluation of exocrine pancreatic insufficiency in cirrhotic patients,using the fecal chymotrypsin test]. Clin Ter 1994; 144:501-9. [PMID: 8001334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
In spite of having been the object of a number of studies, the association of morphologic and functional alterations of the pancreas with liver cirrhosis is as yet controversial. Therefore, the authors have studied exocrine pancreatic function in 40 patients: 8 with alcoholic cirrhosis, 18 with non-alcoholic cirrhosis, and 14 without evidence of hepatobiliary and pancreatic pathology. Pancreatic function was studied by the fecal chymotrypsin test which is sufficiently sensitive and specific and has been preferred in view of its practicability and non-invasiveness. Analysis of the results showed pathologic values to be significantly more frequent in subjects with alcoholic cirrhosis (50%, p < 0.05) compared to non-alcoholic cirrhotics (11.11%) and to controls (7.2%). These findings go to show that pancreatic exocrine deficit is frequently associated with alcoholic cirrhosis, thus confirming what has already been known about the pathogenetic role of alcohol which is apt to provoke both hepatic and pancreatic damage. Finally, it should be pointed out that pancreatic exocrine deficit is a purely functional alteration without clinical manifestations.
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Affiliation(s)
- M Grassi
- Istituto di Idrologia Medica, Università degli Studi di Roma La Sapienza
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Riva P, Arista A, Sturiale C, Tison V, Lazzari S, Franceschi G, Spinelli A, Casi M, Sarti G, Campori F. Glioblastoma therapy by direct intralesional administration of I-131 radioiodine labeled antitenascin antibodies. Cell Biophys 1994; 24-25:37-43. [PMID: 7537631 DOI: 10.1007/bf02789213] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Thirty patients with recurrent glioblastomas (29 brain, 1 spinal cord) received intralesional radioimmunotherapy aiming to control the progression of the tumor after surgery and radiotherapy. The BC-2 and/or BC-4 murine MAbs (Sorin-Biomedica, Saluggia, Italy) were utilized. They strongly react against tenascin (TN), which is an extracellular antigen expressed in large amounts by the stroma of glioblastoma but not by normal brain. The MAbs were labeled with I-131 and were injected directly into the tumor mass to maximize the antibody concentration in the tumor and to irradiate the neoplastic cells. The dose consisted, on average, of 3 mg antibody and 1100 MBq I-131. In most cases the radioimmunotherapy (RIT) applications were repeated two, three, or four times. No systemic adverse reactions were recorded. The brain tolerance to direct antibodies injection was quite good. The antibody concentration in the tumor was high and the MAb residence time in neoplastic tumor was prolonged. Consequently the mean radiation dose to the tumor was high: > 25,000 cGy/cycle. Of 23 evaluable patients, we recorded 7 tumor stabilization (lasting, on mean, 9.1 mo), 4 partial remission (10 mo), and 4 complete remission (18 mo). The overall response rate was 34.7%.
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Affiliation(s)
- P Riva
- Nuclear Medicine Dept., M. Bulfalini Hospital, Cesena (FO), Italy
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21
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Grassi M, Allevato C, Mammucari S, Lazzari S, Nocchi S. The prevalence of gallstones in patients suffering from liver cirrhosis: a clinico-statistical study of 350 patients. Ital J Gastroenterol 1992; 24:342-6. [PMID: 1515661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The overall prevalence according to sex and to age group of biliary calculosis was assessed in 350 patients with liver cirrhosis: data were compared with homogeneous findings in the general population of the GREPCO study. Cholelithiasis was found to be significantly more frequent in cirrhotics, and the pattern was confirmed when data were analyzed according to sex; a significantly higher percentage was found in cirrhotics of the 40-49 and 60-69 age groups. Among cirrhotics with gallstones, alcoholics represented a smaller percentage compared to non-lithiasic cirrhotics. The incidence of complications such as digestive hemorrhage, coma, and hepato-renal syndrome, was equal in cirrhotics with and without biliary calculosis, or, as far as coma was concerned, even lower among the former. A fatal outcome was less frequent in cirrhotic patients with than in those without cholelithiasis. Our results go to show that biliary calculosis does not aggravate the course of liver cirrhosis.
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Affiliation(s)
- M Grassi
- Istituto di Idrologia Medica, Università La Sapienza, Roma, Italy
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22
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Riva P, Arista A, Sturiale C, Moscatelli G, Tison V, Mariani M, Seccamani E, Lazzari S, Fagioli L, Franceschi G. Treatment of intracranial human glioblastoma by direct intratumoral administration of 131I-labelled anti-tenascin monoclonal antibody BC-2. Int J Cancer 1992; 51:7-13. [PMID: 1373410 DOI: 10.1002/ijc.2910510103] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Ten patients with bulky brain glioblastoma, recurring after surgery, radiotherapy or chemotherapy, underwent direct intralesional radioimmunotherapy (RIT) using a monoclonal antibody (MAb), BC-2, raised against tenascin and labelled with 131I. Tenascin, the BC-2-recognized glycoprotein, is an antigen expressed by the stroma of malignant gliomas but not by normal cerebral tissue. Preliminary studies in animals have demonstrated the ability of anti-tenascin radiolabelled MAbs to detect and reduce tumours. A mean MAb dose of 1.93 mg (corresponding to 551.3 MBq of 131I) was injected directly into the tumour by means of a stereotaxic technique. Both systemic and local toxicity were negligible. After 24 hr, average tumour BC-2 uptake was 4.9% per gram and its effective half-life in neoplastic tissue was 66.5 hr: a mean radiation dose to target tissue of 36.48 cGy per MBq of injected 131I was delivered. Normal brain tissue and the major organs were spared. Most patients underwent multiple injections, reaching a cumulative tumour radiation ranging from 7,000 to 41,000 cGy. RIT failed to achieve any result in 4 of the 10 patients; in 3, the disease was stabilized; in the remaining 3, CT scan or NMR revealed 2 partial remission (greater than 50% reduction in tumour volume; PR) and I complete remission (CR). One patient with PR relapsed after II months; the other 2 patients were still maintaining their responses at the time of writing, 17 (CR) and 12 (PR) months after injection.
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Affiliation(s)
- P Riva
- Romagnolo Oncological Institute and Nuclear Medicine Department, M. Bufalini Hospital, Cesena, Italy
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23
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Riva P, Marangolo M, Lazzari S, Agostini M, Sarti G, Moscatelli G, Franceschi G, Spinelli A, Vecchietti G. Locoregional immunotherapy of human ovarian cancer: preliminary results. Int J Rad Appl Instrum B 1989; 16:659-66. [PMID: 2606721 DOI: 10.1016/0883-2897(89)90092-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Ten patients with advanced ovarian carcinoma (5 in FIGO stage III and 5 in stage IV), following the failure of repeated chemotherapy courses, were submitted to i.p. radioimmunotherapy (RIT). Several antibodies (HMFG1, HMFG2, H17E2, B72.3) were employed. The antibody choice was made on the basis both of immunohistochemistry and immunoscintigraphy results. The mean dose administered in each single course was 17 mg, 3 patients underwent two treatments and 2 patients were injected three times. The isotope employed was 131I (mean dose 92 mCi). The early or late untoward effects were negligible. All patients developed anti-mouse antibodies (HAMA) which reduced, during the further RIT, the MoAbs' effective half-life. The estimated radiation dose delivered to the tumour ranged from 2910 to 11,000 cGy. Both wholebody and liver radiation burden resulted in tolerable limits while the thyroid irradiation was high. In 3 patients the RIT result was ineffective; in 2 cases a temporary ascitis staunch was obtained. In 2 cases the tumour growth was slower than expected and in 3 patients instrumental evidence of partial tumour reduction, still lasting after 4-11 months, was observed.
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Affiliation(s)
- P Riva
- Nuclear Medicine Department, Maria delle Croci Hospital Ravenna, Italy
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Di Donato C, Croci G, Lazzari S, Scarduelli L, Vignoli R, Buia M, Tramaloni C, Maccari S, Plancher AC. Chronic neutrophilic leukemia: description of a new case with karyotypic abnormalities. Am J Clin Pathol 1986; 85:369-71. [PMID: 3463191 DOI: 10.1093/ajcp/85.3.369] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A further case of chronic neutrophilic leukemia (CNL) is reported. On karyotype analysis of the bone marrow aspirate, all of the examined cells showed trisomy of chromosome 9 and partial deletion of the long arms of chromosome 20. This anomaly has never before been reported in CNL, and it could be directly associated to the disease.
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Giannessi D, Zucchelli GC, Coli A, Lazzari S, Chiarelli M, Russo R, Serra S. Radioimmunoassay of human chorionic somatomammotropin: evaluation and comparison of three kit-methods. J Nucl Biol Med 1976; 20:142-7. [PMID: 1025296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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