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1.
Eur Radiol ; 31(6): 4221-4231, 2021 Jun.
Article in English | MEDLINE | ID: mdl-33201283

ABSTRACT

OBJECTIVE: To evaluate feasibility and validate both safety and efficiency of radiological percutaneous periprosthetic bone cementoplasty (RPPBC) performed under local anesthesia as an alternative minimally invasive treatment of aseptic implant loosening. METHODS: In this case series, seven patients (mean age 81 years, range 73 to 89 years, 2 men and 5 women) were enrolled between February 2011 and January 2020 with confirmed aseptic loosening of orthopedic implants. One patient presented with tibial component loosening of an unicompartmental knee arthroplasty, one with glenoid component loosening from a reverse shoulder arthroplasty, one femoral gamma nail, and four presented with pedicle screw loosening after staged posterior lumbar interbody fusion. All patients underwent clinical, biochemical, and imaging assessments to confirm the diagnosis of aseptic loosening. All benefited from RPPBC under dual CT and fluoroscopic guidance. All procedures were performed under local anesthesia by an experienced radiologist. Preprocedural, immediate and 6-month post-cementoplasty pain levels on a visual analogue scale (VAS), and functional outcomes were evaluated. Immediate and 6-month postprocedural CTs were performed to evaluate the treated region. RESULTS: All RPPBC were well tolerated by patients throughout the procedure. None of the patients suffered from local or systemic infection post-RPPBC, or periprosthetic fractures. No recurrent implant loosening was observed. Six patients were pain free at 6 months. All patients expressed functional improvements during validated outcome score evaluations. CONCLUSION: RPPBC appears to be an efficient and reliable treatment strategy for aseptic loosening of orthopedic implants in elderly patients deemed unfit for revision surgery. KEY POINTS: • Radiological percutaneous periprosthetic bone cementoplasty offers immediate and long-lasting pain relief in elderly frail patients, or those deemed unfit for revision surgery despite presenting with symptomatic aseptic loosening of orthopedic implants. • Radiological percutaneous periprosthetic bone cementoplasty brings quick and long-lasting improvements in clinical functional outcomes and offer effective pain reduction, thereby improving the overall quality of life. • Radiological percutaneous periprosthetic bone cementoplasty is a safe, quick, reliable, and well-tolerated minimally invasive procedure which can be easily performed under simple locoregional anesthesia and requires short-term hospital stay.


Subject(s)
Arthroplasty, Replacement, Knee , Cementoplasty , Aged , Aged, 80 and over , Female , Humans , Male , Quality of Life , Radiologists , Reoperation , Treatment Outcome
2.
Breast Cancer Res Treat ; 182(2): 267-282, 2020 Jul.
Article in English | MEDLINE | ID: mdl-32445177

ABSTRACT

PURPOSE: MMP9 is a matricellular protein associated with extracellular matrix (ECM) remodelling, that promotes tumour progression, and modulates the activity of cell adhesion molecules and cytokines. This study aims to assess the prognostic value of MMP9 and its association with cytoskeletal modulators in early-stage invasive breast cancer (BC). METHODS: MMP9 expression was evaluated by immunohistochemistry using a well-characterised series of primary BC patients with long-term clinical follow-up. Association with clinicopathological factors, patient outcome and ECM remodelling BC-biomarkers were investigated. METABRIC dataset, BC-GenExMiner v4.0 and TCGA were used for the external validation of MMP9 expression. GSEA gene enrichment analyses were used to evaluate MMP9 associated pathways. RESULTS: MMP9 immunopositivity was observed in the stroma and cytoplasm of BC cells. Elevated MMP9 protein levels were associated with high tumour grade, high Nottingham Prognostic Index, and hormonal receptor negativity. Elevated MMP9 protein expression correlated significantly with cytokeratin 17 (Ck17), Epidermal Growth Factor Receptor (EGFR), proliferation (Ki67) biomarkers, cell surface adhesion receptor (CD44) and cell division control protein 42 (CDC42). Cytoplasmic MMP9 expression was an independent prognostic factor associated with shorter BC-specific survival. In the external validation cohorts, MMP9 expression was also associated with poor patients' outcome. Transcriptomic analysis confirmed a positive association between MMP9 and ECM remodelling biomarkers. GSEA analysis supports MMP9 association with ECM and cytoskeletal pathways. CONCLUSION: This study provides evidence for the prognostic value of MMP9 in BC. Further functional studies to decipher the role of MMP9 and its association with cytoskeletal modulators in BC progression are warranted.


Subject(s)
Biomarkers, Tumor/metabolism , Breast Neoplasms/mortality , Breast/metabolism , Breast/pathology , Matrix Metalloproteinase 9/metabolism , Biomarkers, Tumor/analysis , Breast Neoplasms/genetics , Breast Neoplasms/pathology , Disease Progression , Female , Follow-Up Studies , Gene Expression Profiling , Gene Expression Regulation, Neoplastic , Humans , Immunohistochemistry , Kaplan-Meier Estimate , Matrix Metalloproteinase 9/analysis , Matrix Metalloproteinase 9/genetics , Middle Aged , Neoplasm Invasiveness/pathology , Prognosis , Prospective Studies , RNA, Messenger/metabolism , Time Factors , Tissue Array Analysis
3.
Nature ; 501(7468): 517-20, 2013 Sep 26.
Article in English | MEDLINE | ID: mdl-24067710

ABSTRACT

It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods. During the accretion stage, the system is called a low-mass X-ray binary, and bright X-ray emission is observed. When the rate of mass transfer decreases in the later evolutionary stages, these binaries host a radio millisecond pulsar whose emission is powered by the neutron star's rotating magnetic field. This evolutionary model is supported by the detection of millisecond X-ray pulsations from several accreting neutron stars and also by the evidence for a past accretion disc in a rotation-powered millisecond pulsar. It has been proposed that a rotation-powered pulsar may temporarily switch on during periods of low mass inflow in some such systems. Only indirect evidence for this transition has hitherto been observed. Here we report observations of accretion-powered, millisecond X-ray pulsations from a neutron star previously seen as a rotation-powered radio pulsar. Within a few days after a month-long X-ray outburst, radio pulses were again detected. This not only shows the evolutionary link between accretion and rotation-powered millisecond pulsars, but also that some systems can swing between the two states on very short timescales.

4.
J Chem Phys ; 143(18): 184304, 2015 Nov 14.
Article in English | MEDLINE | ID: mdl-26567659

ABSTRACT

Metadynamics coupled with classical molecular dynamics has been successfully applied to sample the configuration space of metallic and bimetallic nanoclusters. We implement a new set of collective variables related to the pair distance distribution function of the nanoparticle to achieve an exhaustive isomer sampling. As paradigmatic examples, we apply our methodology to Ag147, Pt147, and their alloy Ag(shell)Pt(core) at 2:1 and 1:1 chemical compositions. The proposed scheme is able to reproduce the known solid-solid structural transformation pathways, based on the Lipscomb's diamond-square-diamond mechanisms, both in mono and bimetallic nanoparticles. A discussion of the free energy barriers involved in these processes is provided.

5.
Reprod Domest Anim ; 50(5): 730-4, 2015 Oct.
Article in English | MEDLINE | ID: mdl-26095687

ABSTRACT

The objective was to characterize the vascular patterns of testicular blood flow of adult cats, measuring the systolic velocity (SV), diastolic velocity (DV), resistance index (RI), gate time (wash-in) peak enhancement and output time (wash-out) of the contrast and addition of tissue fill characteristics. Forty-five adult cats were selected, and the echotexture, echogenicity, size, contours and margins of testicles were assessed via ultrasound. By Doppler were evaluated the blood flow and determined of vascular index in testicular artery (SV, DV and RI) and via contrast-enhanced ultrasonography determine the time for phases: wash-in, wash-out and peak enhancement. Sonographic findings presented normal. Testicular artery was observed in the spermatic cord with tortuous patter and showed monophasic-patterned waves and low vascular resistance and with systolic peak evident. Values of indices vascular were as follows: SV = 6.73 cm/s, DV = 2.8 cm/s and RI = 0.54 for left testicles; and SV = 6.23 cm/s, DV = 2.77 cm/s and RI = 0.53 for right testicles. Contrast filled the subcapsular vascular structures and after a few seconds, a homogeneous moderate enhancement of the parenchyma, with parenchymal vessels still distinguishable and after the peak phase, a rapid homogeneous decrease in echogenicity. Values of time for contrast-enhanced ultrasonography were as follows: wash-in = 8.78 s, peak enhancement = 21.62 s and wash-out = 75.36 for left testicles; and wash-in = 10.76 s, peak enhancement = 21.50 s and wash-out = 81.81 for right testicles. Doppler and contrast-enhanced ultrasonography of the testicles in healthy adult cats was easily implemented and may provide baseline data for this organ to allow the use of these techniques as a diagnostic tool for evaluating testicular abnormalities in sick cats.


Subject(s)
Cats , Contrast Media , Testis/blood supply , Testis/diagnostic imaging , Ultrasonography, Doppler/veterinary , Ultrasonography/veterinary , Animals , Blood Flow Velocity/veterinary , Diastole , Male , Systole , Ultrasonography/methods , Vascular Resistance
6.
Cancers (Basel) ; 13(1)2020 Dec 30.
Article in English | MEDLINE | ID: mdl-33396670

ABSTRACT

BACKGROUND: The leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) plays a role in immune response homeostasis, extracellular matrix remodelling and it is overexpressed in many high-grade cancers. This study aimed to elucidate the biological and prognostic role of LAIR-1 in invasive breast cancer (BC). METHODS: The biological and prognostic effect of LAIR-1 was evaluated at the mRNA and protein levels using well-characterised multiple BC cohorts. Related signalling pathways were evaluated using in silico differential gene expression and siRNA knockdown were used for functional analyses. RESULTS: High LAIR-1 expression either in mRNA or protein levels were associated with high tumour grade, poor Nottingham Prognostic Index, hormone receptor negativity, immune cell infiltrates and extracellular matrix remodelling elements. High LAIR-1 protein expression was an independent predictor of shorter BC-specific survival and distant metastasis-free survival in the entire BC cohort and human epidermal growth factor receptor 2 (HER2)+ subtype. Pathway analysis highlights LAIR-1 association with extracellular matrix remodelling-receptor interaction, and cellular proliferation. Depletion of LAIR-1 using siRNA significantly reduced cell proliferation and invasion capability in HER2+ BC cell lines. CONCLUSION: High expression of LAIR-1 is associated with poor clinical outcome in BC. Association with immune cells and immune checkpoint markers warrant further studies to assess the underlying mechanistic roles.

7.
J Oral Rehabil ; 36(3): 193-8, 2009 Mar.
Article in English | MEDLINE | ID: mdl-19207446

ABSTRACT

The aim of the present investigation is to test the null hypothesis that the presence of psychopathology in patients with temporomandibular disorders (TMD) is related to the presence of pain, independent of its location [(i.e. myofascial and/or temporomandibular joint (TMJ) pain]. Ninety-six (n = 96) patients affected by painful TMD underwent a clinical assessment in accordance with the research diagnostic criteria for TMD (RDC/TMD) guidelines and filled out the Symptoms Check List - Revised (SCL-90-R) instrument to investigate the presence of symptoms of psychopathology. Patients with myofascial pain, alone or combined with TMJ pain, endorsed the highest scores in all SCL-90-R scales and showed the highest percentage of abnormal values in the depression (DEP) and somatization (SOM) scales for the assessment of depressive and somatization symptoms. Nonetheless, anova revealed no significant differences between groups in any of the SCL-90-R scales, except than in the Positive Symptom Total Index (F = 3.463; P = 0.035), and the chi-squared test did not detect any significant differences between groups for the prevalence of abnormal scores in the DEP and SOM scales. The existence of a close association between pain and psychosocial disorders in TMD patients was supported by the present study. The null hypothesis is that no differences exist between patients with different painful TMD cannot be fully accepted for the presence of psychosocial disorders because of the trend evidencing higher SCL-90-R scores for myofascial pain patients, alone or combined with TMJ pain, with respect to TMJ pain alone.


Subject(s)
Facial Neuralgia/psychology , Mental Disorders/etiology , Temporomandibular Joint Dysfunction Syndrome/psychology , Adult , Arthralgia/psychology , Depressive Disorder/etiology , Female , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Somatoform Disorders/etiology , Young Adult
8.
Eur J Paediatr Dent ; 10(4): 163-7, 2009 Dec.
Article in English | MEDLINE | ID: mdl-20073540

ABSTRACT

AIM: The aim of the study is codify both a methodological and communication standard based on teleassistance, and the emergencies that can be treated from a remote location along with the related clinical applications, limitations, medicolegal considerations and the patients' opinion on this new opportunity of assistance. MATERIALS AND METHODS: To codify a distance communication method, ten young patients aged 10-16 years, equipped with a mobile videophone and after clear instructions, asked the advice of the orthodontic specialist to deal with minor orthodontic emergencies. Upon completion of the treatment they filled out a questionnaire on satisfaction level and difficulties encountered with the use of this technology. RESULTS AND DISCUSSION: Most of the orthodontic emergencies can be solved at home: rubber ligature displacement, discomfort due to the appliance, irritation of cheeks. Those patients who used the videophone to handle the orthodontic emergencies considered it an easy and useful method, possibly due to the young age of the subjects involved, who are familiar with the new technologies. CONCLUSIONS: Telecommunications applied to medicine and dentistry is currently a subject of topical interest. The most developed countries are investing resources in order to improve assistance and communication between physicians and patients and among specialists. The possibility of sharing videos and images is particularly useful in the orthodontic field, as minor emergencies can be solved easily at home, reassuring patient and parents on one hand, and limiting visits to the dental office to cases of real need.


Subject(s)
Cell Phone , Emergency Treatment , Orthodontics , Telemedicine , Adolescent , Child , Communication , Female , Humans , Male , Telemedicine/standards , Video Recording
9.
Eur Rev Med Pharmacol Sci ; 23(2 Suppl): 224-239, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30977890

ABSTRACT

Despite adopted precautions, surgical site infection (SSI) rate in orthopaedic surgery and its consequences still remain a major problem. Worldwide, infection prevention and control in perioperative settings are considered of primary importance for every healthcare system. The management of perioperative infections carries a heavy psychological and financial burden, since patients who experience SSI have increased hospital length of stay, morbidity and mortality rates, and higher hospital costs. As the treatment of such infections is particularly difficult in the presence of an implanted biomaterial, the prevention of SSI in orthopaedic surgery represents a challenging key issue, requiring the integration of a range of measures before, during and after surgery. In fact, over the years several aspects of SSI prevention have been studied in order to identify the best SSI prevention strategies and set out appropriate clinical practices. This article will review and summarize the recent international guidelines released on this subject together with other published relevant evidence.


Subject(s)
Orthopedic Procedures/adverse effects , Surgical Wound Infection/prevention & control , Surgical Wound Infection/surgery , Humans , Risk Factors , Surgical Wound Infection/microbiology
10.
J Phys Condens Matter ; 29(14): 145402, 2017 Apr 12.
Article in English | MEDLINE | ID: mdl-28098076

ABSTRACT

On the basis of ab initio calculations, we present a new parametrisation of the Vervisch-Mottet-Goniakowski (VMG) potential (Vervisch et al 2002 Phys. Rev. B 24 245411) for modelling the oxide-metal interaction. Applying this model to mimic the finite temperature behaviour of large platinum icosahedra deposited on the pristine MgO(1 0 0), we find the nanoparticle undergoes two solid-solid transitions. At 650 K the 'squarisation' of the interface layer, while a full reshaping towards a fcc architecture takes place above 950 K. In between, a quite long-lived intermediate state with a (1 0 0) interface but with an icosahedral cap is observed. Our approach reproduces experimental observations, including wetting behaviour and the lack of surface diffusion.

11.
Crisis ; 27(1): 39-41, 2006.
Article in English | MEDLINE | ID: mdl-16642914

ABSTRACT

In Italy, postvention models specifically designed for people surviving the suicide of a loved one are very scarce. The SOPRoxi project was developed to respond to this particular lack. By involving different professional and nonprofessional figures (GPs, mental health professionals, social workers, volunteers, etc), the SOPRoxi project aims to remove the stigma associated with this condition and to offer adequate, multifaceted help to survivors.


Subject(s)
Crisis Intervention/methods , Research Design , Suicide, Attempted/psychology , Survivors/psychology , Humans , Self-Help Groups
12.
Environ Pollut ; 197: 90-98, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25514060

ABSTRACT

The development of new resources to evaluate the environmental status is becoming increasingly important representing a key challenge for ocean and coastal management. Recently, the employment of transcriptomics in aquatic toxicology has led to increasing initiatives proposing to integrate eco-toxicogenomics in the evaluation of marine ecosystem health. However, several technical issues need to be addressed before introducing genomics as a reliable tool in regulatory ecotoxicology. The Venice lagoon constitutes an excellent case, in which the assessment of environmental risks derived from the nearby industrial activities represents a crucial task. In this context, the potential role of genomics to assist environmental monitoring was investigated through the definition of reliable gene expression markers associated to chemical contamination in Manila clams, and their subsequent employment for the classification of Venice lagoon areas. Overall, the present study addresses key issues to evaluate the future outlooks of genomics in the environmental monitoring and risk assessment.


Subject(s)
Environmental Monitoring/methods , Water Pollutants/toxicity , Animals , Bivalvia/genetics , Bivalvia/metabolism , Ecosystem , Environment , Industry , Italy , Risk Assessment/methods , Water Pollutants/analysis
13.
Arq. bras. med. vet. zootec. (Online) ; 72(1): 102-106, Jan.-Feb. 2020. ilus
Article in English | LILACS, VETINDEX | ID: biblio-1088941

ABSTRACT

Multiple pregnancies in humans account for only 3% of pregnancies, 97-98% of which are twin pregnancies and the morbimortality is higher in the monochorionic twins when compared to dichorionic ones. The canine species is naturally multiparous, but the diagnosis of monochorionic twin pregnancy is not common. The objective of this report was to describe the ultrasonographic diagnosis of monochorionic twin pregnancies in two bitches [Pug (case 1) and Shih tzu (case 2)]. It was possible to verify the presence of one gestational vesicle containing two fetuses in each female by observing two heads or two bodies within the same placental site. These fetuses presented adequate viability and normal organogenesis. Their development was similar to the other fetuses. In case 1 they were stillborn and smaller than the other five live-born fetuses. The twins in case 2 were born alive, but they also appeared smaller when compared to the littermates. The gestational risks associated with this condition in pregnant bitches are still unknown, however, there are reports of fetal death in monochorionic pregnancies in this species. Therefore, ultrasonographic exam during pregnancy allows an early monochorionic diagnosis and monitoring the fetal viability could bring health benefits to both the female and the littermates.(AU)


As gestações múltiplas em humanos correspondem a apenas 3% das gestações, sendo 97-98% dessas gestações gemelares. Sabe-se que a morbimortalidade fetal é maior em gêmeos monocoriônicos do que nos dicoriônicos. A espécie canina é naturalmente multípara, mas o diagnóstico gestacional de gêmeos monocoriônicos não é comum. O objetivo deste relato é descrever o diagnóstico ultrassonográfico de gêmeos monocoriônicos em duas cadelas, sendo uma da raça Pug (caso 1) e outra da raça Shih-Tzu (caso 2). Foi possível verificar a presença de uma única vesícula gestacional contendo dois fetos em cada cadela, por meio da visibilização de duas cabeças ou de dois corpos dentro de uma mesma placenta. Esses fetos apresentavam viabilidade e organogênese adequadas e o grau de desenvolvimento era similar aos demais fetos da ninhada. No caso 1, os gêmeos nasceram mortos e de tamanho menor que os outros cinco fetos nascidos vivos. Os gêmeos do caso 2 nasceram vivos, mas também eram pequenos em relação aos irmãos da ninhada. Os riscos gestacionais associados a essa condição em cadelas ainda não são conhecidos, no entanto já existem relatos de morte fetal em gestação monocoriônica nessa espécie. Portanto, o exame ultrassonográfico durante a gestação permite um diagnóstico precoce da monocorionicidade, e a monitorização da viabilidade fetal pode trazer benefícios para a saúde da matriz, assim como para o restante da ninhada.(AU)


Subject(s)
Animals , Female , Dogs , Pregnancy, Multiple , Pregnancy, Animal , Ultrasonography, Prenatal/veterinary
14.
J Clin Endocrinol Metab ; 86(10): 5017-24, 2001 Oct.
Article in English | MEDLINE | ID: mdl-11600579

ABSTRACT

The ligand-dependent nuclear receptors PPARgamma and RXRalpha/beta were recently determined to be essential for murine placental development and trophoblast differentiation. In the current study we examined the expression and role of the PPARgamma/RXRalpha heterodimers in human invasive trophoblasts. We first report that in human first trimester placenta, PPARgamma and RXRalpha are highly expressed in cytotrophoblasts at the feto-maternal interface, especially in the extravillous cytotrophoblasts involved in uterus invasion. The coexpression of PPARgamma and RXRalpha genes in extravillous cytotrophoblast nuclei were then confirmed by immunocytochemistry, immunoblot, and real-time quantitative PCR using cultured purified primary extravillous cytotrophoblasts. We next examined, using the extravillous cytotrophoblast culture model, the biological role of PPARgamma/RXRalpha heterodimers in vitro, and we showed that both synthetic (rosiglitazone) and natural [15-deoxy-delta-(12,14)PGJ(2)] PPARgamma agonists inhibit extravillous cytotrophoblast invasion in a concentration-dependent manner and synergize with pan-RXR agonists. Conversely, PPARgamma or pan-RXR antagonists promoted extravillous cytotrophoblast invasion. Furthermore, the pan-RXR antagonist abolished the inhibitory effect of the PPARgamma agonists. Together these data underscore an important function of PPARgamma/RXRalpha heterodimers in the modulation of trophoblast invasion.


Subject(s)
Receptors, Cytoplasmic and Nuclear/physiology , Receptors, Retinoic Acid/physiology , Transcription Factors/physiology , Trophoblasts/physiology , Cell Differentiation , Dimerization , Female , Humans , RNA, Messenger/analysis , Receptors, Cytoplasmic and Nuclear/chemistry , Receptors, Cytoplasmic and Nuclear/genetics , Receptors, Retinoic Acid/chemistry , Receptors, Retinoic Acid/genetics , Retinoid X Receptors , Transcription Factors/chemistry , Transcription Factors/genetics
15.
J Hypertens ; 17(6): 749-56, 1999 Jun.
Article in English | MEDLINE | ID: mdl-10459871

ABSTRACT

OBJECTIVE: To determine the relationships between lifestyle and cardiovascular risk factors among the Brazilian Amondava, one of the world's most isolated populations. DESIGN: Cross-sectional, population-based study. Four age- and sex-matched samples from Brazil Africa, Italy and Poland, representing different levels of modernization, were compared. Body weight, height, blood pressure, serum cholesterol and glycaemia were measured, and a standard questionnaire administered. Data concerning dietary habits and physical activity were collected. A personal socio-economic score was calculated, on the basis of type of economy, level of formal education, type of occupation, type of habitat, availability of piped water and electricity, main source of income, housing conditions, availability of radio, television or personal computer, knowledge of a second language, and organized health facilities. SETTING: Primary epidemiological screening, at an institution. RESULTS: Among the Amondava blood pressure was always <140/90 mm Hg, it did not increase with age and was not correlated with any other variable; 46.6% of subjects had systolic blood pressure <100 mm Hg. Blood pressure among the Amondava (109.6+/-11.1/69.5+/-6.4 mm Hg) was on average lower (P<0.0001) than in all other samples. Among the Amondava, the concentration of total cholesterol was always <200 mg/dl, i.e. similar to that of Africans whose diet included large amounts of vegetable foodstuffs; 90% had glycaemia (<80 mg/dl), and their mean value was the lowest (55.1+/-14.9 mg/dl) of all the groups. CONCLUSIONS: In addition to a possible genetic predisposition not analysed in this study, a traditional lifestyle (no contact with civilization, diet based on complex carbohydrates and vegetables, high energy expenditure) may protect against the development of hypertension, hypercholesterolaemia, and diabetes.


Subject(s)
Cardiovascular Diseases/epidemiology , Indians, South American , Life Style , Adolescent , Adult , Aged , Aged, 80 and over , Blood Pressure , Brazil/epidemiology , Cardiovascular Diseases/blood , Cardiovascular Diseases/ethnology , Child , Cholesterol/blood , Cross-Sectional Studies , Feeding Behavior , Humans , Indians, South American/statistics & numerical data , Middle Aged , Poland/epidemiology , Population Surveillance , Retrospective Studies , Risk Factors , Social Class , South Africa/epidemiology
16.
J Hypertens ; 15(10): 1083-90, 1997 Oct.
Article in English | MEDLINE | ID: mdl-9350582

ABSTRACT

OBJECTIVE: To confirm that westernization of dietary habits represents a stimulus for the expression of cardiovascular risk. DESIGN: Three representative age- and sex-matched samples of general populations of three continents were compared cross-sectionally by analysis of variance. PARTICIPANTS: In total 1110 subjects aged 22-89 years, divided into three groups (370 from Tanzania and Uganda, 370 from the Amazonian region of Brazil, and 370 from northern Italy; 111 men and 259 women in each group). RESULTS: The blood pressure of Africans eating a low-salt fish and vegetable' diet was lower than those of Brazilians, whose diet was based on cereals and meat, and highly urbanized Italians. The systolic blood pressure was correlated to the body mass index for all three populations, but with age only for the Brazilians and Italians. The total cholesterol level and body mass index, both of which are low among Africans, increased progressively with increasing economic level. CONCLUSIONS: Transition from a rural to an urbanized lifestyle is accompanied by a rise in the main cardiovascular risk factors; the present data also show that environmental rather than racial factors have a crucial impact on the risk pattern of populations.


Subject(s)
Blood Pressure/physiology , Cholesterol/blood , Nutritional Status/physiology , Adult , Aged , Aged, 80 and over , Analysis of Variance , Brazil/epidemiology , Cross-Sectional Studies , Female , Humans , Hypertension/blood , Hypertension/epidemiology , Hypertension/physiopathology , Italy/epidemiology , Male , Middle Aged , Prevalence , Risk Factors , Tanzania/epidemiology , Uganda/epidemiology
17.
Am J Hypertens ; 11(2): 190-5, 1998 Feb.
Article in English | MEDLINE | ID: mdl-9524047

ABSTRACT

A circadian blood pressure rhythm has been demonstrated in the majority of subjects, even if inactive during daytime. A rhythm of leg blood flow and peripheral resistance, with higher values during sleep than during waking, has also been recently shown in subjects confined to bed. Doubts still persist on whether such a rhythm also exists in the forearm, and whether or not its trend is similar to that found in the leg. In this study, leg and forearm blood flow and resistance were monitored noninvasively every 15 min for 22 h in 14 normotensives and 14 age-matched hypertensives confined to bed. A significant blood pressure fall (normotensives, -4.8%/-6.1%; hypertensives, -7.1%/-6.3%; all P <.0001), heart rate decrease (-14.9 in the former, -10% in the latter; both P <.0001) and leg flow increase (normotensives, +47.4%, hypertensives, +36.1%; both P <.0001) were found during sleep in all subjects, because of a blood redistribution probably attributable to activation of the cholinergic system. Forearm flow was significantly higher during sleep (+26.1%, P <.0001) in the normotensives, whereas in the hypertensives a slight nocturnal decrease (-1.9%) was found. In conclusion, the hypertensives had lower leg and forearm flow than the normotensives during sleep and similar during daytime. Peripheral resistance measured in the leg and in the forearm was greater in the former than in the latter, both during sleep and during waking.


Subject(s)
Forearm/blood supply , Hypertension/physiopathology , Leg/blood supply , Blood Pressure , Circadian Rhythm , Female , Heart Rate , Humans , Male , Regional Blood Flow , Sleep/physiology
18.
J Hum Hypertens ; 6(2): 95-9, 1992 Apr.
Article in English | MEDLINE | ID: mdl-1597852

ABSTRACT

In order to evaluate the effects of 'espresso' Italian coffee on resting flow, blood pressure, and peripheral resistance, 15 non-coffee drinking healthy volunteers received 2 cups of regular coffee, 200 mg purified caffeine or placebo in a latin square double-blind crossover protocol. Before and 30, 60, 90 and 120 min after ingestion, segmental resting flow and BP were measured and peripheral resistance was calculated. An echocardiogram was also performed before and 60 and 120 min after caffeine intake. Both regular coffee and caffeine produced a significant decrease in resting flow and a significant increase in resistance; both systolic and diastolic BP also increased, although not significantly. No variation was observed in heart rate and in cardiac contractility. Placebo (highly decaffeinated coffee for regular coffee and china bitter extract for caffeine) did not produce any haemodynamic effect. In five other healthy volunteers used to drinking more than 5 cups of coffee a day, coffee administration had no effect. These data demonstrate that the caffeine contained in espresso Italian coffee is a vasoconstrictor agent whose effects however are completely blunted in usual coffee drinkers as a consequence of adaptation.


Subject(s)
Caffeine/pharmacology , Coffee , Hemodynamics/drug effects , Adult , Blood Pressure/drug effects , Caffeine/blood , Caffeine/isolation & purification , Echocardiography , Female , Forearm/blood supply , Heart Rate/drug effects , Humans , Male , Placebos , Reference Values , Regional Blood Flow , Vascular Resistance
19.
J Affect Disord ; 3(2): 159-65, 1981 Jun.
Article in English | MEDLINE | ID: mdl-6454709

ABSTRACT

A study which was first carried out in the United States was repeated in Northern Italy. Life events reported to have occurred 6 months before the onset of illness were compared in 40 outpatients who had a first episode of primary depression, and a matched normal control group. Depressives reported significantly more events than the control groups, and had significantly more of the following: undesirable events, exits from the social field, events which had an 'objective negative impact' (rated as being traumatic) and 'independent events' (events which were unlikely to be a consequence of the depression); the last 2 were judged by a rater who was unaware whether the event had occurred in a depressed patient or in a control subject. There were no significant differences in desirable events, entrances into the social field and events which were within the subjects' control. These findings replicate previous results and are consistent with the view that certain recent life events play a substantial role as precipitants in some depressed patients.


Subject(s)
Depressive Disorder/psychology , Life Change Events , Adult , Female , Humans , Italy , Male , Retrospective Studies , Social Isolation
20.
Gen Hosp Psychiatry ; 2(1): 35-40, 1980 Mar.
Article in English | MEDLINE | ID: mdl-7380247

ABSTRACT

Five-hundred consecutive referrals to the psychiatric consultation service at the University of Padua School of Medicine have been reviewed. In 69% of cases concurrent physical and psychiatric disorders were reported. There was a prevalence of females, working class patients, and individuals with limited schooling. Depression was the most common psychiatric disorder in all classes of organic disease and accounted for 37% of all psychiatric diagnoses, followed by anxiety neurosis (18.6%) and drug dependence (13.8%). In 10.8% of cases no psychiatric diagnosis was made.


Subject(s)
Hospitals, General , Psychiatric Department, Hospital , Referral and Consultation , Adolescent , Adult , Aged , Female , Hospitals, Teaching , Humans , Italy , Male , Mental Disorders/therapy , Middle Aged , Psychotherapy , Psychotropic Drugs/therapeutic use
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