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Biomedical subjects

S Rosso

Publications and source records attributed to S Rosso.

At least 19 recordsLinked to original sources

Comparing participants and nonparticipants in a smoking cessation trial: selection factors associated with general practitioner recruitment activity.

We studied the relationship between smokers' sociodemographic characteristics, their smoking habit, health status, and the probability of their having been approached for recruitment in the smoking cessation trial performed in Turin, Italy, with the aim of gathering information on the role of selection criteria adopted by general practitioners (GPs) in offering anti-smoking counseling. The 965 smokers who were offered participation in the trial were matched to a sample of eligible smokers (n = 277), selected from the rosters of the 42 GPs collaborating in the trial, who had not been invited to participate. The probability of being offered enrollment, estimated through a multiple conditional logistic regression model, assuming the GP as the matching variable, was significantly increased for intermediate (10-19 cigarettes per day: odds ratio [OR] = 4.13; 95% confidence interval [CI]: 2.63-6.47) and heavy (20 cigarettes per day or more: OR = 10.12; 95% CI: 6.51-15.75) smokers, for smokers diagnosed with chronic cardiovascular (OR = 2.06; 95% CI: 1.19-3.58), or respiratory (OR = 2.50; 95% CI: 1.40-4.48) diseases, and for smokers mentioning an intermediate number (2-4) of past quit attempts (OR = 3.70; 95% CI: 2.18-6.28). General Practitioners focused their recruitment activity on higer-risk smokers or smokers who had tried to quit, to offer more clues for intervention. Assessing the potential public health benefit of preventive interventions requires a more systematic evaluation of the generalizability of the reported findings.

Adult

Parallel risk assessment of melanoma and basal cell carcinoma: skin characteristics and sun exposure.

In this study we compared the strength of the association of constitutional factors and sun exposure with cutaneous malignant melanoma (CMM) and basal cell carcinoma (BCC). We analysed 260 incident cases of CMM, 425 incident cases of BCC and two sets of population controls from previous case-control studies conducted in Turin, Italy. Simultaneous comparison was accomplished by comparing separate simple logistic and polytomous logistic regressions. Tendency to sunburn was shown to be the most important risk indicator for both types of tumours, being associated with a two- to three-fold increase in risk for CMM and a two-fold increase in risk for BCC. Intermittent and intense sun exposure, as during beach holidays, increased the risk of both CMM and BCC, while prolonged exposure to sun, as during outdoor occupations, was not associated with CMM or BCC. The increase in risk during beach holidays occurred mainly during childhood for CMM cases, while for BCC cases it also continued during adulthood. Analysis of the independent effect of risk factors confirmed the role of skin phenotype (eye colour odds ratio [OR] = 1.6, tendency to sunburn OR = 2.1) and intermittent sun exposure (sunburns in childhood OR = 3.8, sun exposure during beach holidays OR = 1.2) in CMM. Risk of CMM showed a significant increase when sun exposure exceeded the threshold of about 3500 h during beach holidays cumulated in a lifetime. In contrast, the role of skin phenotype in BCC is less strong, but cumulated hours of sun exposure during beach holidays in a lifetime showed a constant risk rise with an early plateau at a low exposure level.

Basal Cell Carcinoma

Endothelin and nitric oxide synthase in lymphatic endothelial cells: immunolocalization in vivo and in vitro.

BACKGROUND: Endothelin (ET) is an endothelium-derived multifunctional peptide that produces a potent, long-lasting vasoconstriction. Nitric oxide (NO), besides being the most important endothelium-derived relaxant factor in blood vessels, is supposed to be involved in regulating the interactions among endothelium, adhesive molecules, and leukocytes. METHODS: We investigated the possible occurrence and distribution of ET and constitutive nitric oxide synthase (NOs), the enzyme that generates NO from L-arginine, in bovine lymphatic vessels and primary culture of lymphatic endothelium by using immunocytochemistry. RESULTS: Specific immunostaining with both ET and endothelial constitutive NOs antisera was detectable at light and electron microscopic levels in the endothelial cell layer of lymphatic vessels, whereas no immunostaining could be observed in the muscular and adventitial layers. The immunoreaction showed a diffuse pattern throughout the cytoplasm of endothelial cells. Primary cultures of endothelial cells isolated from lymphatic vessels also displayed cytoplasmic ET- and NOs-like immunoreactivities. The endothelial nature of cell monolayers was confirmed by the positive reaction to the von Willebrand factor, a reliable marker of endothelial cells, and by ultrastructural features of cultured cells. CONCLUSIONS: These findings suggest that the endothelium is a major source of ET and NO in lymphatic vessels. Interestingly, the lymphatic endothelium maintains the capability of producing such vasoactive sustances also in vitro, thus suggesting that lymphatic endothelial cells in culture may be used in studies concerning the role of the endothelium in the generation of vasoactive molecules. According to previous functional studies, the occurrence of ET and NOs immunoreactivities in lymphatic vessel endothelium supports the view that lymphatic endothelium may play an important role in the regulation of lymphatic vascular tone and in the production of vascular contractile activity promoting lymph flow.

Animals

Social class and cancer survival in Turin, Italy.

STUDY OBJECTIVE: This study aimed to investigate social differences in cancer survival in residents of Turin, Italy. DESIGN: Incident cases from the Piedmont cancer registry were linked to municipality files and 1981 census data, and followed up from 1985-92. The census provided data on education and housing tenure, which were used as indicators of social class. The case fatality ratio (CFR) was estimated through a proportional hazard model, with socioeconomic indicators as risk factors. MAIN RESULTS: Educated people of both sexes showed better survival for all malignant neoplasms together and, particularly among men, for tumours which show a better prognosis such as cancer of colon-rectum, larynx, prostate, and bladder. The relative risk of dying, compared with people who had only primary school education, decreased from 0.91 for those with middle school education to 0.67 for those who held a university degree. CONCLUSION: There were major differences in cancer survival showing a poorer outcome for those from the lower social stratum, particularly in sites for which effective treatments are available. Since is unlikely that the observed differences could be totally explained by extraneous factors, such as competing mortality, it is concluded that even in a country where the health system offers universal coverage, non-financial barriers act by creating differences in opportunities for better care.

Educational Status

[Quality of life after treatment in patients with laryngeal carcinoma].

Today laryngeal cancer can be cured by means of a variety of treatments (nearly 60% of the patients in an unselected population are still alive after 5 years). Despite the low incidence, this form of cancer can present a significant social problem because the form of treatment can have an impact on the esthetic, functional and emotional aspects affecting the quality of life (QOL). In the present study 690 laryngeal cancer patients treated with 6 different forms of therapy (total laryngectomy, partial laryngectomy, cordectomy, radiotherapy alone, total laryngectomy plus post-operative radiotherapy, partial laryngectomy plus post-operative radiotherapy) were asked to fill out a specific EORTC CORE QOL Questionnaire (EORTC QLQ C-30) as well as a specific head and neck questionnaire. Six multi-item function scales, 3 symptom scales and 6 individual items assessing both symptoms and economic consequences of the disease were evaluated. A total of 517 patients (74.92%) filled out the questionnaire. For each form of therapy the patients were divided by age (under and over 65 years of age). The results indicate that the quality of life is better in those patients who underwent a single form of treatment (i.e. radiotherapy alone, partial laryngectomy, total laryngectomy) than in those who underwent combination treatments (i.e. surgery plus radiotherapy). Moreover, the results were better in the older patients. Quite often laryngeal cancer patients are subject to psychosocial problems although this did not show up in the present study where the patients tended to consider surgery as a liberation. The social-cultural level of the patient has a significant effect on the quality of life as it proved better in those social classes were physical strength is of prime importance as opposed to those dominated by social parameters such as socialization, communication and aesthetics.

Aged

[The use of indwelling phonatory valve in the rehabilitation of laryngectomized patients: preliminary results in 30 patients].

The creation of a tracheo-esophageal fistula, and subsequent positioning of a voice button, has greatly improved the patients' ability to communicate and is the treatment of choice for many. The literature indicates that the success rate for this technique is in the 56-90% range. The present study presents the preliminary results obtained in a group of 30 laryngectomy patients for whom a Provox or Blom-Singer-Indwelling voice button were inserted at a later date. Of these 21 (70%) had undergone pre- or post-operative radiotherapy. On the average insertion of the voice button took place 36 months after the laryngectomy while it was approximately 40 months after radiotherapy. Patient selection was based on widely accepted criteria. In particular, the following factors were take into consideration: patient motivation, positive Taub test, dynamic features of the esophageal wall, video fluoroscopy evaluation. For the Provox voice button the patient was hospitalized for 24 hours while with the Blom-Singer-Indwelling device it was 72 hours. In addition, with the latter device, oral feeding was restored somewhat later although this depends on the difference in positioning. The results of the present study are in line with those presented by other authors. In particular, the immediate success rate was 83% while the long-term success rate reached 96%.

Adult

[Chemotherapy of head and neck carcinomas].

In most cases head and neck tumors manifest themselves on a local-regional level giving rise to highly mutilating pathologies with psycho-social repercussions. Surgery and radiotherapy are effective treatments for limited neoplasms (stage I-II). On the other hand, after surgery and/or radiotherapy, the treatment of locally advanced tumors (stage III-IV) or local recurrences and/or distant metastases is still problematic. For this reason chemotherapy, initially used only as a palliative, is today associated with other treatments to achieve better results both in terms of survival and disease-free time spans. Hence chemotherapy must be considered part of any multimodal primary treatment for advanced squamous cell carcinoma of the head and neck. In fact, numerous clinical studies have clearly demonstrated that adjuvant or neoadjuvant chemotherapy has a highly relative affect on survival in locally advanced diseases and that the incidence of distant metastases is reduced. This is not, however, followed by a similar reduction in local recurrences which are often the cause of death in such patients. It would, on the other hand, appear that survival is improved with integrated radio-chemotherapy. Immunochemotherapy, which has not as yet provided significant clinical results in cases of advanced tumors and/or metastases, must still be evaluated in the treatment of locally limited neoplasms. Organ preservation, which proves feasible in the larynx, leads one to hope it can be applied in other head and neck sites. The future balance leans in favor of the multidisciplinary approach and multi-center studies must be performed so that an adequate number of cases can be gathered over a brief period. This will make it possible to answer those questions and, at times, illusions which accompany chemotherapy in the treatment of advanced head and neck tumors.

Adult

Prognostic value of quality of life scores in terminal cancer patients.

A multicenter cross-sectional study of 115 terminal cancer patients in eight home-care units assessed the prognostic value of quality of life scores, as measured by the Therapy Impact Questionnaire (TIQ). The analysis of the questionnaires completed by 100 patients revealed an association between survival and many of the scales: fatigue, gastrointestinal symptoms, global health status, functional impairment, emotional status, and cognitive status. This association was also observed for some specific physical symptoms, such as confusion, weakness, and loss of appetite, and the overall number of symptoms reported by the patient. Adjusting for some possible confounding factors, only confusion (among the physical symptoms), cognitive status, and global health status (among TIQ primary scales) showed independent prognostic value. As regards the latter two scales, median survival time was distributed differently for patients with no impairment of either (137 days), with impairment of one scale (50 days) and with impairment of both scales (17 days). The judgment expressed by the patient about subjective perception of general malaise and cognitive difficulties can give the clinician important prognostic information.

Aged

The multicentre south European study 'Helios'. I: Skin characteristics and sunburns in basal cell and squamous cell carcinomas of the skin.

The aim of this study was to investigate constitutional and environmental determinants of non-melanocytic skin cancer among different populations from south Europe. Between 1989 and 1993 we interviewed incident cases and a random population sample of controls from five centres where a cancer registry was operating, whereas we selected a sample of hospital-based cases and controls from three other centres. Controls were stratified according to the age and sex distribution of cases. In all, 1549 cases of basal cell carcinoma (BCC), 228 of squamous cell carcinoma (SCC) and 1795 controls were interviewed. Both cancers affected primarily sun-exposed sites such as face, head and neck, but the prevalence of BCC on the trunk was higher than for SCC. Pigmentary traits such as hair and eye colour as well as tendency to sunburn were strong and independent indicators of risk for both BCC and SCC. In SCC, adjusted odds ratios (ORs) ranged from 1.6 for fair hair colour to 12.5 for red hair. Light-blonde hair entailed a risk of about 2 for BCC. Pale eye colour was associated with a risk of 1.8 for SCC and 1.4 for BCC. Subjects who always burn and never tan showed an adjusted OR of 2.7 for BCC and 2.0 for SCC. A history of sunburns and a young age at first sunburn were associated with an increased risk for BCC only (OR 1.7). Pigmentary traits and sun sensitivity of the skin confirmed their role as risk indicators. The effect of sunburns, as an indicator of both exposure and sun sensitivity of the skin, is less clear. Nevertheless, its association with BCC suggests, by analogy with melanoma, a relationship with intense sun exposure. Conversely, SCC would require prolonged exposure to sunlight.

Adolescent

The multicentre south European study 'Helios'. II: Different sun exposure patterns in the aetiology of basal cell and squamous cell carcinomas of the skin.

The role of sun exposure in development of basal cell and squamous cell carcinomas among different populations from south Europe was investigated. Between 1989 and 1993 we interviewed incident cases and a random population sample of controls from five centres where a cancer registry was operating, whereas we selected a sample of hospital-based cases and controls from the other three centres. We gathered information on life-long exposure to sunlight during different activities. Results are analysed for 1549 basal cell carcinoma (BCC) cases and 228 squamous cell carcinoma (SCC) cases compared with 1795 controls. We observed a statistically significant increase of risk of SCC with increasing sun exposure beyond a threshold of 70,000 cumulated hours of exposure in a lifetime. Sun exposures during work and holidays were, however, inversely correlated. Odds ratios (ORs) of SCC were up to eight or nine times the reference for the highest exposures (200,000 cumulated hours or more). BCC exhibited a 2-fold increase of risk for lower exposure (8000-10,000 cumulated hours in a lifetime) with a plateau and a slight decrease of risk for the highest exposures (100,000 cumulated hours or more). Outdoor work showed a significantly increased risk of SCC (OR 1.6 for more than 54,000 cumulated hours of exposure in a lifetime), whereas recreational activities such as sun exposure during holidays at the beach (OR 1.6 for more than 2600 cumulated hours of exposure in a lifetime) or during water sports (OR 1.6 for more than 2600 cumulated hours of exposure in a lifetime) were associated with an increased risk of BCC. Risk patterns were different in poor or good tanners with a significant risk trend for good tanners, whereas poor tanners were on a plateau of increased risk at any level of exposure. Solar radiation is associated with a risk of BCC even for relatively short periods of exposure such as during holidays and sports, whereas SCC develops later if exposure continues. The skin's ability to tan modulates the risk of BCC; subjects who tan poorly have a steady risk increase, whereas people who tan easily develop cancer only after prolonged exposures.

Basal Cell Carcinoma

Accuracy of the umbilical arteries Doppler flow velocity waveforms in detecting adverse perinatal outcomes in a high-risk population.

OBJECTIVE: To define the accuracy of the umbilical artery Doppler flow velocity waveforms, according to different cut-off values, in predicting adverse perinatal outcomes among fetuses at high risk of hypoxic complications. SUBJECTS: Two hundred and sixty-five pregnant women with diagnosis of small for gestational age fetus and/or pregnancy induced hypertension studied in four Italian ultrasound units. METHODS: Prospective study. Serial Doppler ultrasound measurements of the umbilical artery were performed. Results were not available for clinical management. Cut-off curves, corresponding to different age-specific centiles of the pulsatility index distribution among pregnancies resulting in healthy newborns, regardless of birthweight, were computed by regression methods. Sensitivity, specificity, positive predictive value and negative predictive value of such cut-off curves, and of absent/reverse end-diastolic flow, in predicting different adverse outcomes were estimated. The adverse outcomes were: perinatal or neonatal death (OUTCOME 1). Death or Apgar<7 at 5' or need for admission to intensive care unit or other hypoxic related abnormalities (OUTCOME 2). Either OUTCOME 2 or birthweight<l0th centile (OUTCOME 3). Both OUTCOME 2 and birthweight<10th centile (OUTCOME 4). RESULTS: The best accuracy was in predicting OUTCOMES 1 and 4. Positive predictive value increased strongly with higher cut-off curves while negative predictive value only decreased slightly. For absent/reverse end-diastolic flow, negative predictive value and positive predictive value were respectively 94% and 39% for death, and 81% and 72% respectively for OUTCOME 2. For the 95th centile curve the corresponding figures were 96%, 33% and 84%, 67%. The 60th centile curve had a 85% and 74% sensitivity value for death and OUTCOME 2 respectively, but the corresponding positive predictive values were 18% and 40% only. CONCLUSIONS: The findings of an absent end diastolic flow or of pulsatility index values above the 95th centile curve strongly suggest it is time to deliver the fetus. The 60th centile curve is the most suitable to recognize fetuses at risk for abnormal outcome, but early delivery should be avoided because of its low positive predictive value.

Apgar Score

Cancer incidence in Turin: the effect of migration.

AIMS AND BACKGROUND: Studies on migrant populations have been of great value in clarifying the role of environmental factors in cancer occurrence. Most of them consider migrants from other countries or continents. Turin, the target territory of this study, was an important area of internal migration initially from the East, and more recently from southern Italy. METHODS: The study compared incidence rates (age-standardized) of the native population, of the migrants and incidence rates of the Cancer Registries located in the four main areas of origin. RESULTS: Overall incidence rates in migrants from southern Italy were intermediate compared with those of the stable populations of the South and the North. The same effect was not true for people from the North-East, who migrated in earlier decades. In this population, migration towards lower-incidence areas did not reduce cancer incidence. Migrants from the South showed a significant increase in intestinal, breast, and tobacco-related tumors compared to the stable southern population. No effect of migration was found for cancer of the mouth, pharynx, esophagus, stomach or corpus uteri. Incidence of liver cancer in migrant southern males was significantly different from the stable and the native north-western population. CONCLUSIONS: The results, based on incidence data, validated previous findings based on mortality data on the effect of Italian internal migrations and showed that migrants underwent changes in some environmental exposures. In particular, migrants from the South to the North of Italy came into contact with new risk factors, with an increase in occurrence of cancer.

Female

Cutaneous melanoma and sunburns in childhood in a southern European population.

A population-based case-control study of 260 patients (74 males and 186 females, mean age = 56) with cutaneous malignant melanoma and 416 controls (211 males and 205 females, mean age = 55) was conducted in Turin, north-west Italy, to examine the relation between timing of sunburns and sun exposure and melanoma risk within a southern European population, which is still relatively little investigated. Particularly elevated risk was associated with history of sunburns in childhood [odds ratio 5.9; 95% confidence interval (CI) 3.6-9.5], and such risk elevation persisted after allowance for other major melanoma risk covariates. Conversely, risk increase from history of severe sunburns lifelong was lower (odds ratio = 1.7; 95% CI: 1.1-2.4) and was eliminated by allowance for type of skin reaction to sun exposure and history of sunburns in childhood. A significant increase in the risk of cutaneous malignant melanoma was also associated with number of weeks spent on holiday at the beach not only as an adult, but also as a child.

Adolescent

A therapy impact questionnaire for quality-of-life assessment in advanced cancer research.

The first part of the validation procedure used for a Therapy Impact Questionnaire (TIQ) on quality-of-life assessment in advanced cancer patients is described. The TIQ is composed of 36 items which assess both disease and therapy impact according to four dimensions that operationally define quality of life: physical symptoms (24 items), functional status (3 items), concomitant emotional and cognitive factors (6 items) and social interaction (2 items). A global judgement expressed as "have you been feeling ill" further completes the TIQ. Patients answered each question using a 4-point verbal Likert scale: not at all, slight, a lot and very much. The TIQ was given to 1,000 consecutive patients who were no longer responsive to cancer treatment and presented symptoms due to disease progression. The compliance rate was quite high (87%). Results of confirmatory factor analysis were consistent with the operational dimensions identified during questionnaire construction. In particular, the dichotomized answers to 3 functional status items could be used as a Guttman scale. In a sub-sample of 50 patients, the reproducibility of functional status items was assessed using a 7-item parallel form. The intraclass correlation coefficient obtained indicated a reasonably high reproducibility. On the basis of the analyses conducted, the TIQ appears to be a reliable and concise instrument for studies aimed to assess the effectiveness of therapies in advanced cancer patients.

Adolescent

A randomized trial of smoking cessation interventions in general practice in Italy.

The purpose of this study was to examine the effectiveness of different practice-based approaches to assist patients of primary care physicians to quit smoking and sustain cessation. Forty-four nonsmoking general practitioners volunteered for the study. After a period of training, they randomized 923 smoking clients, unselected for motivation toward quitting, to four different intervention groups: (i) minimal intervention, consisting of one single counselling session and a brief handout on quitting techniques; (ii) repeated counselling including reinforcing sessions at Months 1, 3, 6, and 9; (iii) repeated counselling and use of nicotine gum; and (iv) repeated counselling and spirometry. Biochemically validated smoking status was assessed at six and 12 months after recruitment. The proportion of verified quitters at 12 months was 4.8 percent among subjects randomized to the minimal intervention group, compared to 5.5 percent, 7.5 percent, and 6.5 percent among those randomized to the three repeated-counselling groups. In no treatment group was the outcome significantly different from that for one-time counselling at the (P less than 0.05) level. Lack of power, contamination, and low attendance at reinforcing sessions should be taken into account in interpreting the results.

Adult

Two simple indexes used to evaluate the impact of therapy on the quality of life of patients receiving primary chemotherapy for operable breast cancer.

The psychometric characteristics of two indexes used to evaluate the subjective morbidity of chemotherapy regimens were analyzed. Both indexes assessed the duration of discomfort as perceived by the patient throughout therapy. The first index asked patients to state the number of days spent with 'discomfort', and the second index asked them which days they would like to eliminate altogether because of the unbearable symptoms experienced on those days. While the first index gives some idea of the duration of suffering, without defining it, the second highlights a specific time when the quality of her life was unacceptable to the patient. We studied these indexes in the form of a questionnaire completed by 168 women who had entered a cancer clinical trial. This trial evaluated the efficacy of primary chemotherapy in rendering conservative surgery feasible in women with operable breast cancer, but whose tumor size was greater than 3 cm. Four different treatment regimens were used: CMF, FAC, FEC, FNC (C = cyclophosphamide, M = methotrexate, F = fluorouracil, A = adriamycin, E = epirubicin, N = mitoxantrone). Seventy-nine patients were interviewed during chemotherapy and 89 during follow-up visits. Initial assessment of the reliability, discriminant and concurrent validity of the two indexes produced satisfactory results. Finally, we analyzed the responses given by 168 patients for a total of 600 treatment cycles. The average value of 'discomfort' was 3 days, whereas the average value of days 'to be eliminated' was 1. The range of subjective morbidity (for every cycle of treatment: 'discomfort = 0-30 days; 'to be eliminated' = 0-20 days) was very broad.(ABSTRACT TRUNCATED AT 250 WORDS)

Antineoplastic Combined Chemotherapy Protocols