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Ciclamini D, Tos P, Monticelli A, Crosio A, De Blasi P, Battiston B. Flexor digitorum superficialis tenodesis for treatment of flexible swan neck deformity of fingers. Comparison between two surgical techniques to fix the tendon: A pilot study. J Plast Reconstr Aesthet Surg 2019; 72:1418-1433. [PMID: 31043337 DOI: 10.1016/j.bjps.2019.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 03/27/2019] [Accepted: 04/06/2019] [Indexed: 10/27/2022]
Affiliation(s)
- D Ciclamini
- UOC Orthopaedics and Traumatology 2 - Surgery for the Hand and Upper Limb, Department of Orthopaedics and Traumatology, AOU City of Health and Science, Turin, Italy
| | - P Tos
- UOC Surgery of the Hand and Reconstructive Microsurgery, Gaetano Pini - CTO Hospital, Milan, Italy
| | - A Monticelli
- Plastic Surgery Department, AOU Padova, Padua, Italy
| | - A Crosio
- UOC Surgery of the Hand and Reconstructive Microsurgery, Gaetano Pini - CTO Hospital, Milan, Italy.
| | - P De Blasi
- Department of Economics and Statistics, University of Turin, Italy
| | - B Battiston
- UOC Orthopaedics and Traumatology 2 - Surgery for the Hand and Upper Limb, Department of Orthopaedics and Traumatology, AOU City of Health and Science, Turin, Italy
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Lapice E, Monticelli A, Cocozza S, Pinelli M, Massimino E, Giacco A, Rivellese AA, Cocozza S, Riccardi G, Vaccaro O. Corrigendum to "The combination of UCP3-55CT and PPARγ2Pro12Ala polymorphisms affects BMI and substrate oxidation in two diabetic populations" [Nutr Metab Cardiovasc Dis 26 (2016) 400-406]. Nutr Metab Cardiovasc Dis 2017; 27:472. [PMID: 28412082 DOI: 10.1016/j.numecd.2017.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- E Lapice
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy.
| | - A Monticelli
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy; Institute Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS) - CNR, Naples, Italy
| | - S Cocozza
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - M Pinelli
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy
| | - E Massimino
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - A Giacco
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - A A Rivellese
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - S Cocozza
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy
| | - G Riccardi
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - O Vaccaro
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
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Lapice E, Monticelli A, Cocozza S, Pinelli M, Massimino E, Giacco A, Rivellese AA, Cocozza S, Riccardi G, Vaccaro O. The combination of UCP3-55CT and PPARγ2Pro12Ala polymorphisms affects BMI and substrate oxidation in two diabetic populations. Nutr Metab Cardiovasc Dis 2016; 26:400-406. [PMID: 27089973 DOI: 10.1016/j.numecd.2016.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 12/18/2015] [Accepted: 01/24/2016] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND AIM To evaluate the combined contribution of UCP3-55CT and PPARγ2 Pro12Ala polymorphisms as correlates of BMI, energy expenditure (REE) and substrate oxidation in people with type 2 diabetes. METHODS AND RESULTS Two independent population with type 2 diabetes were studied: population A, n = 272; population B, n = 269. Based on both UCP3 and PPARγ2 genotypes three groups were created. Carriers of the PPARγ2 Pro12Ala in combination with the CC genotype of UCP3 (ProAla/CC, group 1); carriers of only one of these genotypes (either CC/ProPro or CT-TT/ProAla, group 2); people with neither variants (CT-TT/ProPro, group 3). In both populations BMI (kg/m(2)) was highest in group 1, intermediate in group 2 and lowest in group 3, independent of energy intake (i.e 35.3 ± 6.7 vs 33.4 ± 5.4 vs 31.8 ± 3, p < 0.02, population A; 32.4 ± 4.2 vs 31.7 ± 3.8 vs 30.1 ± 2.7; p < 0.03, population B). People with the ProAla/CC genotype (group 1) showed similar REE, but lower lipid oxidation (10.9 vs 13.9 g/kg fat free mass/day; p = 0.04) and higher carbohydrate oxidation (23.6 vs 15.6 g/kg fat free mass/day; p = 0.02) than carriers of other genotypes. CONCLUSIONS The combination of UCP3-55 CC and PPARγ2 Pro12Ala genotypes is associated with significantly higher BMI than other PPARγ2-UCP3 genotype combinations, partly due to a reduced ability in lipids oxidation. The relative importance of these mechanism(s) may be different in non diabetic people.
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Affiliation(s)
- E Lapice
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy.
| | - A Monticelli
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy; Institute Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS) - CNR, Naples, Italy
| | - S Cocozza
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - M Pinelli
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy
| | - E Massimino
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - A Giacco
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - A A Rivellese
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - S Cocozza
- Department of Molecular Medicine and Medical Biotechnology (DMMBM), University of Naples Federico II, Italy
| | - G Riccardi
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
| | - O Vaccaro
- Department of Clinical Medicine and Surgery, Federico II University of Naples, Italy
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Lapice E, Monticelli A, Cocozza S, Pinelli M, Giacco A, Rivellese AA, Cocozza S, Riccardi G, Vaccaro O. The energy intake modulates the association of the -55CT polymorphism of UCP3 with body weight in type 2 diabetic patients. Int J Obes (Lond) 2013; 38:873-7. [PMID: 24026107 DOI: 10.1038/ijo.2013.174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 08/05/2013] [Accepted: 08/27/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND Previous association studies of the -55CT polymorphism of the uncoupling protein 3 (UCP3) gene with body mass index (BMI) have provided inconsistent results. The study aim is twofold: (1) to evaluate the association of the -55CT polymorphism of UCP3 with BMI in two independent populations to verify the reproducibility of the finding; (2) to evaluate whether this association is modulated by energy intake. METHODS Study participants are 736 males and females with type 2 diabetes belonging to independent populations (N=394 population 1; N=342 population 2). Anthropometry and laboratory parameters were measured; in population 2, energy intake and physical exercise were also assessed. RESULTS The -55CT polymorphism was associated with a significantly lower BMI in population 1 (27.8±3.9 vs 28.9±4.6 kg m(-2); P<0.02), the finding was confirmed in population 2 (that is, 30.3±6.0 vs 32.1±5.9 kg m(-2); P<0.01) independent of gender, age, HbA1c, use of drugs and energy intake. To evaluate the role of diet in population 2, the study participants were stratified by genotype and tertiles of energy intake. In both genotype groups, BMI increased with increasing caloric intake with a significant trend (P<0.001), the BMI difference between the two genotype groups was large and statistically significant in the lower tertile (27.6 vs 31.2 kg m(-2); P<0.001), intermediate in the second tertile and negligible in the upper tertile (32.8 vs 32.9; kg m(-2); nonsignificant). The multivariate regression analysis confirmed a significant interaction between genotype and energy intake as correlates of BMI independent of age, gender, glucose control, physical activity and medications for diabetes (P=0.004). CONCLUSIONS The study replicates in two independent populations the association between the -55CT polymorphism of UCP3 and a lower BMI. This association was modulated by energy intake, thus suggesting that the unmeasured effect of diet may partly account for inconsistencies of prior association studies.
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Affiliation(s)
- E Lapice
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - A Monticelli
- 1] Department of Cellular and Molecular Biology and Pathology A Califano DBPCM, University of Naples Federico II, Naples, Italy [2] IEOS CNR, Naples, Italy
| | - S Cocozza
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - M Pinelli
- Department of Cellular and Molecular Biology and Pathology A Califano DBPCM, University of Naples Federico II, Naples, Italy
| | - A Giacco
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - A A Rivellese
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - S Cocozza
- Department of Cellular and Molecular Biology and Pathology A Califano DBPCM, University of Naples Federico II, Naples, Italy
| | - G Riccardi
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - O Vaccaro
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
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Castaldo I, Pinelli M, Monticelli A, Acquaviva F, Giacchetti M, Filla A, Sacchetti S, Keller S, Avvedimento VE, Chiariotti L, Cocozza S. DNA methylation in intron 1 of the frataxin gene is related to GAA repeat length and age of onset in Friedreich ataxia patients. J Med Genet 2008; 45:808-12. [PMID: 18697824 DOI: 10.1136/jmg.2008.058594] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [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: 11/03/2022]
Abstract
BACKGROUND The most frequent mutation of Friedreich ataxia (FRDA) is the abnormal expansion of a GAA repeat located within the first intron of FXN gene. It is known that the length of GAA is directly correlated with disease severity. The effect of mutation is a severe reduction of mRNA. Recently, a link among aberrant CpG methylation, chromatin organisation and GAA repeat was proposed. METHODS In this study, using pyrosequencing technology, we have performed a quantitative analysis of the methylation status of five CpG sites located within the region upstream of GAA repeat, in 67 FRDA patients. RESULTS We confirm previous observation about differences in the methylation degree between FRDA individuals and controls. We showed a direct correlation between CpG methylation and triplet expansion size. Significant differences were found for each CpG tested (ANOVA p<0.001). These differences were largest for CpG1 and CpG2: 84.45% and 76.80%, respectively, in FRDA patients compared to 19.65% and 23.34% in the controls. Most importantly, we found a strong inverse correlation between CpG2 methylation degree and age of onset (Spearman's rho = -0.550, p<0.001). CONCLUSION Because epigenetic changes may cause or contribute to gene silencing, our data may have relevance for the therapeutic approach to FRDA. Since the analysis can be performed in peripheral blood leucocytes (PBL), evaluation of the methylation status of specific CpG sites in FRDA patients could be a convenient biomarker.
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Affiliation(s)
- I Castaldo
- Department of Cellular and Molecular Biology and Pathology, University of Naples Federico II, via Pansini 5, 80131, Naples, Italy
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Criscuolo C, Mancini P, Saccà F, De Michele G, Monticelli A, Santoro L, Scarano V, Banfi S, Filla A. Ataxia with oculomotor apraxia type 1 in Southern Italy: late onset and variable phenotype. Neurology 2004; 63:2173-5. [PMID: 15596775 DOI: 10.1212/01.wnl.0000145604.57000.36] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Ataxia with oculomotor apraxia type 1 (AOA1) is an autosomal recessive disorder characterized by early-onset cerebellar ataxia, oculomotor apraxia, and peripheral neuropathy. The causative gene (APTX) has been recently identified in Portuguese and Japanese kindreds. Three patients with AOA1 were identified in an APTX mutation screening on 28 Southern Italian patients with progressive ataxia and peripheral neuropathy. A novel homozygous missense mutation (H201Q) was found in one patient and a Japanese missense mutation (P206L) in two. AOA1 clinical heterogeneity and onset later than previously described are shown.
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Affiliation(s)
- C Criscuolo
- Department of Neurological Sciences, Federico II University, Naples, Italy.
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Pianese L, Turano M, Lo Casale MS, De Biase I, Giacchetti M, Monticelli A, Criscuolo C, Filla A, Cocozza S. Real time PCR quantification of frataxin mRNA in the peripheral blood leucocytes of Friedreich ataxia patients and carriers. J Neurol Neurosurg Psychiatry 2004; 75:1061-3. [PMID: 15201375 PMCID: PMC1739119 DOI: 10.1136/jnnp.2003.028605] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The most common causative mutation of Friedreich ataxia (FRDA) is the unstable hyperexpansion of an intronic GAA triplet repeat that impairs frataxin transcription. Using real time quantitative PCR, we showed that FRDA patients had residual levels of frataxin mRNA ranging between 13% and 30% and that FRDA carriers had about 40% of that of controls. Asymptomatic carriers also showed reduced frataxin mRNA levels. We found an inverse correlation between the number of GAA repeats and frataxin mRNA levels. Real-time quantitative PCR may represent an alternative assay for FRDA molecular diagnosis.
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Affiliation(s)
- L Pianese
- BioGeM Consortium, c/o Department of Molecular and Cellular Biology and Pathology, Frederico II University, Naples, Italy.
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Giacchetti M, Monticelli A, De Biase I, Pianese L, Turano M, Filla A, De Michele G, Cocozza S. Mitochondrial DNA haplogroups influence the Friedreich's ataxia phenotype. J Med Genet 2004; 41:293-5. [PMID: 15060107 PMCID: PMC1735730 DOI: 10.1136/jmg.2003.015289] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Criscuolo C, Banfi S, Orio M, Gasparini P, Monticelli A, Scarano V, Santorelli FM, Perretti A, Santoro L, De Michele G, Filla A. A novel mutation in SACS gene in a family from southern Italy. Neurology 2004; 62:100-2. [PMID: 14718706 DOI: 10.1212/wnl.62.1.100] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A form of autosomal recessive spastic ataxia (ARSACS) has been described in the Charlevoix and Saguenay regions of Quebec. So far a frameshift and a nonsense mutation have been identified in the SACS gene. The authors report a new mutation (1859insC), leading to a frameshift with a premature termination of the gene product sacsin, in two sisters from consanguineous parents. The phenotype is similar to previously described patients with ARSACS.
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Affiliation(s)
- C Criscuolo
- Department of Neurological Sciences, Federico II University, Naples, Italy.
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Romero R, Monticelli A, Garcia A, Haffner S. Test systems and mathematical models for transmission network expansion planning. ACTA ACUST UNITED AC 2002. [DOI: 10.1049/ip-gtd:20020026] [Citation(s) in RCA: 289] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Albano LM, Zatz M, Kim CA, Bertola D, Sugayama SM, Marques-Dias MJ, Kok F, Ferraretto I, Rosemberg S, Cocozza S, Monticelli A. Friedreich's ataxia: clinical and molecular study of 25 Brazilian cases. Rev Hosp Clin Fac Med Sao Paulo 2001; 56:143-8. [PMID: 11781594 DOI: 10.1590/s0041-87812001000500003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Friedreich's ataxia is a neurodegenerative disorder whose clinical diagnostic criteria for typical cases basically include: a) early age of onset (< 20 or 25 years), b) autosomal recessive inheritance, c) progressive ataxia of limbs and gait, and d) absence of lower limb tendon reflexes. METHODS We studied the frequency and the size of expanded GAA and their influence on neurologic findings, age at onset, and disease progression in 25 Brazilian patients with clinical diagnosis of Friedreich's ataxia - 19 typical and 6 atypical - using a long-range PCR test. RESULTS Abnormalities in cerebellar signs, in electrocardiography, and pes cavus occurred more frequently in typical cases; however, plantar response and speech were more frequently normal in this group when the both typical and atypical cases were compared. Homozygous GAA expansion repeats were detected in 17 cases (68%) - all typical cases. In 8 patients (32%) (6 atypical and 2 typical), no expansion was observed, ruling out the diagnosis of Friedreich's ataxia. In cases with GAA expansions, foot deformity, cardiac abnormalities, and some neurologic findings occurred more frequently; however, abnormalities in cranial nerves and in tomographic findings were detected less frequently than in patients without GAA expansions. DISCUSSION Molecular analysis was imperative for the diagnosis of Friedreich's ataxia, not only for typical cases but also for atypical ones. There was no genotype-phenotype correlation. Diagnosis based only on clinical findings is limited; however, it aids in better screening for suspected cases that should be tested. Evaluation for vitamin E deficiency is recommended, especially in cases without GAA expansion.
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Affiliation(s)
- L M Albano
- Genetic Unit, Infant Neurological Unit of the Children's Institute of Hospital das Clinicas, University of Sao Paulo, Brazil
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Scarano V, de Cristofaro T, De Michele G, Salvatore E, De Biase I, Monticelli A, Filla A, Cocozza S. Serum transferrin receptor levels in Friedreich's and other degenerative ataxias. Neurology 2001; 57:159-60. [PMID: 11445653 DOI: 10.1212/wnl.57.1.159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- V Scarano
- Department of Neurological Sciences, Federico II University, Naples, Italy
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Giri J, Jáuregui Rueda H, Monticelli A, Pirola DA, Planes N. [Infrequent deletion in 67 codon in HIV reverse transcriptase in antiretroviral treatment failure]. Medicina (B Aires) 2001; 61:193-5. [PMID: 11374145] [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: 04/16/2023] Open
Abstract
We present a clinical case of antiretroviral treatment failure with appearance of mutations demonstrated by genotyping. We also show the evolution of the pattern of mutations that confers resistance to protease and reverse transcriptase inhibitors along with changes in the scheme of drugs indicated to the patient. A deletion was found in codon 67 of the TR gen, along with a novel resistance model to AZT pointing out the benefits of the detection of antiviral resistance by sequencing (genotyping).
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Affiliation(s)
- J Giri
- Centro Diagnóstico de Virus, Buenos Aires
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Filla A, De Michele G, Coppola G, Federico A, Vita G, Toscano A, Uncini A, Pisanelli P, Barone P, Scarano V, Perretti A, Santoro L, Monticelli A, Cavalcanti F, Caruso G, Cocozza S. Accuracy of clinical diagnostic criteria for Friedreich's ataxia. Mov Disord 2000; 15:1255-8. [PMID: 11104216 DOI: 10.1002/1531-8257(200011)15:6<1255::aid-mds1031>3.0.co;2-c] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/09/2022] Open
Abstract
The accuracy of the diagnostic criteria for Friedreich's ataxia proposed by Harding and by the Quebec Cooperative Study on Friedreich's Ataxia was studied in 142 patients with progressive unremitting ataxia of autosomal recessive inheritance or sporadic occurrence. Eighty-eight patients received the molecular diagnosis of Friedreich's ataxia. Traditional diagnostic criteria are characterized by high specificity, but they yield a high number of false-negative diagnoses. We suggest three levels of diagnostic certainty: (1) possible Friedreich's ataxia, defined as sporadic or recessive progressive ataxia with (a) lower limb areflexia and dysarthria, Babinski sign, or electrocardiographic repolarization abnormalities, or (b) with lower limb retained reflexes and electrocardiographic repolarization abnormalities (95% sensitivity and 88% positive predictive value); (2) probable Friedreich's ataxia as defined by Harding's criteria (63% sensitivity and 96% positive predictive value) or by Quebec Cooperative Study on Friedreich's Ataxia criteria (63% sensitivity and 98% positive predictive value); (3) definite diagnosis, molecularly confirmed.
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Affiliation(s)
- A Filla
- Department of Neurological Sciences, Federico II University, Naples, Italy
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Monticelli A, Lewi D, Salomon H, Pampuro S, Libonatti O, Jauregui Rueda H, Hodara V. Regression of AIDS-related Kaposi's sarcoma following combined antiretroviral treatment. Rev Argent Microbiol 2000; 32:206-8. [PMID: 11149154] [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: 02/18/2023] Open
Abstract
The aim of the study was to assess regression of Kaposi's sarcoma (KS) in AIDS patients in Argentina. Eighteen male AIDS patients with human immunodeficiency virus (HIV)-associated Kaposi's sarcoma at different clinical stages received KS specific treatment and/or anti-retroviral therapy. Triple anti-retroviral therapy was given to most of the patients with the exception of four who received zidovudine (ZDV) in combination with another nucleoside analogue but no protease inhibitors. Plasma viral load and CD4+ T lymphocyte number were measured in two blood samples (before and after treatment). Complete remission was found in all patients (five) at KS stage I, three out of eight patients at stage II but in none at stages III and IV. Two out of three patients at KS stage IV did not respond to treatments at all. Three patients at KS stages I and II showed complete remission of sarcoma with only anti-retroviral therapy suggesting that anti-retroviral therapy and non-KS specific chemotherapy can successfully control KS.
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Affiliation(s)
- A Monticelli
- FAIVIH/S (Fundación de Asistencia e Información en VIH/SIDA), Buenos Aires, Argentina
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Giri J, Rueda HJ, Monticelli A, Planes N. Case report of a novel amino acid deletion in codon 67 and T69G substitution in the reverse transcriptase of HIV-1. Antivir Ther 2000; 5:227-8. [PMID: 11075943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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De Michele G, Filla A, Cavalcanti F, Tammaro A, Monticelli A, Pianese L, Di Salle F, Perreti A, Santoro L, Caruso G, Cocozza S. Atypical Friedreich ataxia phenotype associated with a novel missense mutation in the X25 gene. Neurology 2000; 54:496-9. [PMID: 10668723 DOI: 10.1212/wnl.54.2.496] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We describe two sisters with early onset gait ataxia, rapid disease progression, absent or very mild dysarthria and upper limb dysmetria, retained knee jerks in one, slight to moderate peripheral nerve involvement, and diabetes. Molecular analysis showed that they are compound heterozygotes for GAA expansion and a novel exon 5a missense mutation (R165P). This mutation appears to be associated with an atypical but not milder Friedreich ataxia phenotype.
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Affiliation(s)
- G De Michele
- Department of Neurological Sciences, Federico II University, Naples, Italy
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Santoro L, De Michele G, Perretti A, Crisci C, Cocozza S, Cavalcanti F, Ragno M, Monticelli A, Filla A, Caruso G. Relation between trinucleotide GAA repeat length and sensory neuropathy in Friedreich's ataxia. J Neurol Neurosurg Psychiatry 1999; 66:93-6. [PMID: 9886462 PMCID: PMC1736186 DOI: 10.1136/jnnp.66.1.93] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To verify if GAA expansion size in Friedreich's ataxia could account for the severity of sensory neuropathy. METHODS Retrospective study of 56 patients with Friedreich's ataxia selected according to homozygosity for GAA expansion and availability of electrophysiological findings. Orthodromic sensory conduction velocity in the median nerve was available in all patients and that of the tibial nerve in 46 of them. Data of sural nerve biopsy and of a morphometric analysis were available in 12 of the selected patients. The sensory action potential amplitude at the wrist (wSAP) and at the medial malleolus (m mal SAP) and the percentage of myelinated fibres with diameter larger than 7, 9, and 11 microm in the sural nerve were correlated with disease duration and GAA expansion size on the shorter (GAA1) and larger (GAA2) expanded allele in each pair. Pearson's correlation test and stepwise multiple regression were used for statistical analysis. RESULTS A significant inverse correlation between GAA1 size and wSAP, m mal SAP, and percentage of myelinated fibres was found. Stepwise multiple regression showed that GAA1 size significantly affects electrophysiological and morphometric data, whereas duration of disease has no effect. CONCLUSION The data suggest that the severity of the sensory neuropathy is probably genetically determined and that it is not progressive.
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Affiliation(s)
- L Santoro
- Department of Clinical Neurophysiology, Federico II University, Naples, Italy
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19
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De Michele G, Cavalcanti F, Criscuolo C, Pianese L, Monticelli A, Filla A, Cocozza S. Parental gender, age at birth and expansion length influence GAA repeat intergenerational instability in the X25 gene: pedigree studies and analysis of sperm from patients with Friedreich's ataxia. Hum Mol Genet 1998; 7:1901-6. [PMID: 9811933 DOI: 10.1093/hmg/7.12.1901] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Friedreich's ataxia is the first known autosomal recessive disease caused by an unstable trinucleotide expansion mutation. The most frequent mutation is expansion of a GAA repeat in the first intron of gene X25. We studied transmission of the expanded GAA repeat in 37 Friedreich's ataxia pedigrees and analysed blood and sperm alleles in eight patients. We showed intergenerational instability in 84% of the alleles with an overall excess of contractions. Both contractions and expansions of the GAA repeat occurred in maternal transmission with a stronger tendency to expand for smaller repeats and to contract for longer repeats. Paternally transmitted alleles contracted only. Parental age and the intergenerational change in expansion size were directly correlated in maternal transmission and inversely in paternal transmission. The size of the GAA expansion was slightly lower in patients than heterozygous carriers. Sperm analysis confirmed the tendency to contract of paternal alleles, which was more marked with ageing. The degree of contraction of the GAA repeat in sperm was much higher than that found in intergenerational transmission and was directly related to the repeat size. A blood expanded allele reverted to normal size in the sperm of one patient. This study suggests the existence of different mutational mechanisms in Friedreich's ataxia alleles, which occur both pre- and post-zygotically.
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Affiliation(s)
- G De Michele
- Department of Neurological Sciences and Department of Molecular and Cellular Biology and Pathology and CEOS, Federico II University, via Pansini 5, 80131 Naples, Italy
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20
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Hodara V, Monticelli A, Pampuro S, Salomón H, Jauregui Rueda H, Libonatti O. HIV-1 viral load: comparative evaluation of three commercially available assays in Argentina. Acta Physiol Pharmacol Ther Latinoam 1998; 48:107-13. [PMID: 9695883] [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: 02/08/2023]
Abstract
Viral load (HIV-RNA copies per milliliter of plasma) has good correlation to prognosis considering progression to AIDS. The evaluation of commercial kits to measure viral load has become a need to find the most specific, sensitive and reproducible procedure to follow up HIV-infected patients. Hereby, a comparative analysis was done by using three different assays available in Argentina for quantitation of HIV-RNA in plasma. A plasma panel: 20 from HIV-1 infected individuals (9 asymptomatic and 11 symptomatic) and 9 from HIV-1 seronegative individuals was studied. Samples were run by Amplicor HIV-1 Monitor (Roche Diagnostic System, USA) Quantiplex HIV-1 RNA 2.0 Assay (Chiron Corporation, USA) and NASBA HIV-1 RNA QT (Organon Teknika, Holland). RNA was extracted from 0.2 ml of plasma for Amplicor, 0.1 ml and 1 ml of plasma for NASBA and, duplicates of 1 ml of plasma was centrifuged and pellet was used for bDNA assay no RNA extraction step. For a given specimen, a log difference of < 0.5 between assays was considered as concordant result. All seronegative samples were bellow the detection limit for all assays (Amplicor 200 c/ml, NASBA 400 c/ml and Quantiplex (bDNA) 500 c/ml). Two samples from asymptomatic patients were not detectable by NASBA (Sensitivity: 90%) Sensitivity was increased to 100% by using 1 ml of plasma. All samples were detectable by the other assays (sensitivity: 100%). For NASBA-bDNA, 74% samples were concordant, 35% for Amplicor-bDNA and 53% for NASBA-Amplicor. By using 1 ml of plasma from asymptomatic patients, concordance was 65% for NASBA-bDNA and 60% for NASBA Amplicor. Comparing samples from asymptomatic patients, only 22% was concordant in both cases. Reproducibility of NASBA was low (33% with differences lower than 0.5 Log) when 0.1 and 1 ml were used. Due to the levels of concordance of these results, it would be suggested to use always the same technique to follow up HIV-1 infection. The reproducibility of the assays should be tested by every laboratory and for every technician in charge of the assay in order to have confidence in the results specially to follow up HIV-infected patients or to monitor anti-viral therapies.
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Affiliation(s)
- V Hodara
- Department of Microbiology, University of Buenos Aires' School of Medicine, Argentina
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21
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De Michele G, De Fusco M, Cavalcanti F, Filla A, Marconi R, Volpe G, Monticelli A, Ballabio A, Casari G, Cocozza S. A new locus for autosomal recessive hereditary spastic paraplegia maps to chromosome 16q24.3. Am J Hum Genet 1998; 63:135-9. [PMID: 9634528 PMCID: PMC1377251 DOI: 10.1086/301930] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Hereditary spastic paraplegia is a genetically and phenotypically heterogeneous disorder. Both pure and complicated forms have been described, with autosomal dominant, autosomal recessive, and X-linked inheritance. Various loci (SPG1-SPG6) associated with this disorder have been mapped. Here, we report linkage analysis of a large consanguineous family affected with autosomal recessive spastic paraplegia with age at onset of 25-42 years. Linkage analysis of this family excluded all previously described spastic paraplegia loci. A genomewide linkage analysis showed evidence of linkage to chromosome 16q24.3, with markers D16S413 (maximum LOD score 3.37 at recombination fraction [theta] of .00) and D16S303 (maximum LOD score 3.74 at straight theta=.00). Multipoint analysis localized the disease gene in the most telomeric region, with a LOD score of 4.2. These data indicate the presence of a new locus linked to pure recessive spastic paraplegia, on chromosome 16q24.3, within a candidate region of 6 cM.
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Affiliation(s)
- G De Michele
- Department of Neurology, Federico II University, Naples, Italy
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22
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Abstract
We studied the factors that might influence onset age in Friedreich's ataxia in 41 cases (20 male, 21 female) homozygous for GAA expansion on the first intron of X25 gene. Patients came from 18 multiplex families (13 couples, 5 triplets). Mean age (SD) was 18.1 (8.9) years and did not differ by gender. Onset age and the sizes of the smaller (GAA1) and the larger (GAA2) allele in each pair showed high intrafamily correlation. We found an inverse correlation between age at onset and GAA1 size, but not between age at onset and GAA2 size. Stepwise multiple regression of onset age on GAA1 size, sibling onset age, and GAA2 size showed that GAA1 accounts for 73% of onset age variance, and sibling onset age for an additional 13%. The study demonstrates that, in addition to GAA expansion size, other environmental or genetic familial factors influence disease expression.
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Affiliation(s)
- G De Michele
- Department of Neurological Sciences, Federico II University, Naples, Italy
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23
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24
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Hodara VL, Monticelli A, Benetucci J, Lasala M, Jauregui Rueda H, Libonatti O, García Messina O, Reboredo G, Bogdanowicz E, Bases O, Pampuro S, Salomón H. [Detection of the viral load and its use as a virological marker in the follow-up of HIV-1-positive patients]. Rev Argent Microbiol 1998; 30:1-7. [PMID: 9629601] [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: 02/07/2023] Open
Abstract
The evaluation of viral load as virological marker and its clinical and immunological correlation are presented. The first viral load studies were performed during 1996 at the National Reference Center for AIDS in Argentina in HIV-1 positive patients derived from different Hospitals in Buenos Aires. The study included 216 HIV-1 positive patients, 49 females and 167 males. Plasma was used for evaluating viral load and a second sample was obtained in 25 of the 216 patients for their monitoring. Viral load was performed using bDNA technique (Quantiplex HIV RNA assay 2.0, Chiron Corporation, USA). Other parameters such as CD4 count determined by flow cytometry and clinical stages according to CDC classification were obtained in order to correlate clinical and immunological status of the patients. When CD4 count was compared with viral load, the results showed a trend of viral RNA increase in plasma along with a decrease in CD4+ lymphocytes. This trend was also observed to correlate with the progression to AIDS disease. In all groups of patients, considering either CD4 counts or clinical status, ranges of viral load values were broad. Thus, as shown by percentiles 25 and 75, patients with CD4 counts < 200/ml, presented viral load values between 18,395 c/ml to 215,425 c/ml and patients with > 200/ml viral RNA showed values from < 10,000 to 35,180 c/ml. Patients with CDC's A and B stages presented values from < 10,000 to 45,160 c/ml and 87,000 c/ml respectively, while patients classified as C had 10,582 to 215,000 c/ml. Results of two consecutive samples in the 25 patients showed the usefulness of this technique for monitoring antiretroviral therapy. Nevertheless, despite the tendency of viral load to increase along with the progression of the disease, the broad range of values suggested the importance of using both virological and immunological parameters for the management of HIV infected patients.
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Affiliation(s)
- V L Hodara
- Departamento de Microbiología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay, Argentina
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Ragno M, De Michele G, Cavalcanti F, Pianese L, Monticelli A, Curatola L, Bollettini F, Cocozza S, Caruso G, Santoro L, Filla A. Broadened Friedreich's ataxia phenotype after gene cloning. Minimal GAA expansion causes late-onset spastic ataxia. Neurology 1997; 49:1617-20. [PMID: 9409356 DOI: 10.1212/wnl.49.6.1617] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We describe three siblings from an Italian family affected by an autosomal recessive spinocerebellar degeneration. Gait ataxia, presenting between 38 and 45 years, was the first symptom in all three patients. Dysarthria, dysmetria, brisk tendon reflexes, extensor plantar response, and scoliosis were constant features. Disease progression was slow. Electrophysiologic studies demonstrated a slight reduction in sural nerve sensory action potential in only one patient. Analysis of GAA expansion within the X25 gene showed that patients were homozygous for the expansion, with the shorter expanded allele ranging from 120 to 156 triplets. The size of the GAA expansion may be smaller than we previously described. Such minimal expansions may result in atypical forms of Friedreich's ataxia.
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Affiliation(s)
- M Ragno
- Department of Neurological Sciences, Federico II University, Naples, Italy
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26
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Colao A, Ferone D, Cappabianca P, del Basso De Caro ML, Marzullo P, Monticelli A, Alfieri A, Merola B, Calì A, de Divitiis E, Lombardi G. Effect of octreotide pretreatment on surgical outcome in acromegaly. J Clin Endocrinol Metab 1997; 82:3308-14. [PMID: 9329359 DOI: 10.1210/jcem.82.10.4283] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Pretreatment with octreotide (OCT) in acromegaly has been reported to improve surgical outcome. The objective of this study was to analyze retrospectively the effects of a 3- to 6-month presurgical treatment with OCT in acromegalics focusing on electrocardiographic (ECG) records, blood pressure levels, glucose and lipid profile, tumor size and consistency, easy tumor removal at surgery, and morphological findings at pathology. Fifty-nine patients with acromegaly who were undergoing surgical treatment were studied randomly before surgery; 37 patients were untreated, and 22 were treated with OCT at doses ranging 150-600 micrograms/day for 3-6 months. At study entry, untreated and OCT-treated patients had similar circulating GH and insulin-like growth factor I (IGF-I), glucose, and cholesterol levels as well as prevalence of overt diabetes mellitus, hypertension, and ECG abnormalities. In untreated and OCT-treated patients, respectively, radiological imaging documented microadenoma in 0 and 1, intrasellar macroadenoma in 10 and 6, intra- and suprasellar macroadenoma in 18 and 11, invasive macroadenoma in 9 and 4 patients. Before surgery, serum GH and IGF-I levels significantly decreased in the 22 OCT-treated acromegalics, and in 5 of them, a significant shrinkage was documented. ECG abnormalities disappeared in 7 of 11 (63.6%) OCT-treated patients. In 3 of the 7 patients with diabetes mellitus, treatment with OCT together with low carbohydrate intake normalized blood glucose levels, whereas in 2 patients, insulin could be replaced by oral antidiabetics, and in 2 patients, the insulin dose was reduced. Presurgical blood glucose, total cholesterol and triglyceride levels, as well as systolic (145.2 +/- 3.4 vs. 132.9 +/- 2.5 mm Hg; P < 0.01) and diastolic (94.3 +/- 1.7 vs. 84.3 +/- 1.6 mm Hg; P < 0.001) blood pressure levels were significantly higher in untreated than in OCT-treated patients. Two weeks after surgery, circulating GH and IGF-I levels were normalized in 11 untreated (29.7%) and 12 OCT-treated (54.5%) patients (P < 0.005, by chi 2 test). Macroscopically, no difference was found between untreated and OCT-treated adenomas, whereas at pathology, a significant increases in cellular atypia (31.6% vs. 19.2%; P < 0.05) was found in OCT-treated adenomas. One patients in the untreated group died from cardiorespiratory arrest during the early postoperative period. Finally, the average duration of hospitalization after operation was longer in untreated than in OCT-treated patients (8.6 +/- 0.7 vs. 5.6 +/- 0.5 days). We conclude that a 3- to 6-month treatment with OCT before surgery for GH-secreting adenoma improved clinical conditions and surgical outcome and reduced the duration of hospitalization after operation.
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Affiliation(s)
- A Colao
- Department of Molecular and Clinical Endocrinology, Federico II University, Naples, Italy
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27
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Montermini L, Andermann E, Labuda M, Richter A, Pandolfo M, Cavalcanti F, Pianese L, Iodice L, Farina G, Monticelli A, Turano M, Filla A, De Michele G, Cocozza S. The Friedreich ataxia GAA triplet repeat: premutation and normal alleles. Hum Mol Genet 1997; 6:1261-6. [PMID: 9259271 DOI: 10.1093/hmg/6.8.1261] [Citation(s) in RCA: 154] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The most common mutation causing Friedreich ataxia (FRDA), an autosomal recessive neurodegenerative disease, is the hyperexpansion of a polymorphic GAA triplet repeat localized within an Alu sequence (GAA-Alu) in the first intron of the frataxin (X25) gene. GAA-Alu belongs to the AluSx subfamily and contains several polymorphisms in strong linkage disequilibrium either with a subgroup of normal alleles, or with hyperexpanded FRDA-associated alleles. GAA repeat sizes in 300 normal chromosomes (97 from carriers and 203 from controls) were distributed in two separate groups: 83% of them contained between six and 10 triplets (small normal alleles), while the remaining 17% had more than 12 triplets, up to 36 (large normal alleles). Sequence analysis showed that no normal, stable allele contained more than 27 uninterrupted GAA triplets. All longer normal alleles were interrupted by a hexanucleotide repeat (GAGGAA). An allele containing an uninterrupted run of 34 GAA triplets was stably transmitted in four instances, but in one case underwent hyperexpansion to 650 triplets. Overall, our results suggest that the FRDA-associated expanded GAA repeats originate from normal alleles by recurrent expansions of alleles at risk.
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Affiliation(s)
- L Montermini
- Centre de Recherche Louis-Charles Simard, Montreal, Quebec, Canada
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28
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Cossée M, Campuzano V, Koutnikova H, Fischbeck K, Mandel JL, Koenig M, Bidichandani SI, Patel PI, Moltè MD, Cañizares J, De Frutos R, Pianese L, Cavalcanti F, Monticelli A, Cocozza S, Montermini L, Pandolfo M. Frataxin fracas. Nat Genet 1997; 15:337-8. [PMID: 9090376 DOI: 10.1038/ng0497-337] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Bucciero A, De Caro M, De Stefano V, Tedeschi E, Monticelli A, Siciliano A, Cappabianca P, Vizioli L, Cerillo A. Pleomorphic xanthoastrocytoma: clinical, imaging and pathological features of four cases. Clin Neurol Neurosurg 1997; 99:40-5. [PMID: 9107467 DOI: 10.1016/s0303-8467(96)00560-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [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
Four cases of pleomorphic xanthoastrocytoma (PXA) were collected from among 688 glioma patients who underwent operation at the Institute of Neurosurgery, University of Naples "Federico II" between January 1973 and December 1994. Three were females and one male, ranging in age from 10 months to 65 years. Three tumors were superficial in location, appearing as a meningo-cerebral mass in the temporo-parietal region. In one case, the tumor was situated deep within the brain (capsulo-thalamic region), without contact with leptomeninges. Three patients had experienced epileptic seizures, whereas one patient presented with an ictal episode. Tumor excision was grossly total in two cases, and subtotal in the remaining two. In three cases, histological examination demonstrated a "typical" PXA; conversely one tumor (subtotal excised) was an "atypical" PXA. The two patients with incomplete surgical resection were postoperatively treated with fractionated brain radiation therapy. Of the two patients who had grossly total removals, one showed tumor recurrence 6 years after surgery, and underwent operation (the recurrent neoplasm did not exhibit malignant transformation); the second patient was free of tumor at 14 months following craniotomy. Of the two patients who had undergone subtotal removals, one died because of massive regrowth of the lesion 22 months after surgery, whereas the second patient was asymptomatic at 1 year follow up.
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Affiliation(s)
- A Bucciero
- Institute of Neurosurgery, School of Medicine, University of Naples Federico II, Naples, Italy
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30
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Pianese L, Cavalcanti F, De Michele G, Filla A, Campanella G, Calabrese O, Castaldo I, Monticelli A, Cocozza S. The effect of parental gender on the GAA dynamic mutation in the FRDA gene. Am J Hum Genet 1997; 60:460-3. [PMID: 9012421 PMCID: PMC1712406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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31
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Rodero L, Boutureira M, Demkura H, Burkett A, Fernández C, Losso M, Jáuregui Rueda H, Monticelli A, Vitale R, Canteros C, Hochenfellner F, Vivot W, Davel G. [Yeast infections: causative agents and their antifungal resistance in hospitalized pediatric patients and HIV-positive adults]. Rev Argent Microbiol 1997; 29:7-15. [PMID: 9229726] [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: 02/04/2023] Open
Abstract
Candidiasis has increased its frequency over the last decade, particularly among hospitalized patients where it is accompanied with high rates of mortality, and in patients with AIDS who are predisposed to oropharyngeal or esophageal candidiasis. The aim of this study was to determine the frequency of appearance of different yeast species and the resistance profile to current antifungal drugs in hospitalized pediatric patients and adult HIV patients from 5 institutions of Buenos Aires City and suburbs, and La Plata City, during the period 1993-1995, in order to obtain local and updated information. Candida albicans was the etiologic agent recovered in 87% of the 214 HIV positive patients with oropharyngeal candidosis, and in 50% of the 209 hospitalized pediatric patients. In the latter group 28% of these infections were due to Candida parapsilosis and 18% to Candida tropicalis, but only 2% and 4% of oral candidosis were caused by these organisms. Detection of Malassezia furfur and Hansenula anomala, responsible of systemic infections, and Trichosporon beigelii, isolated from a burn patient, were considered remarkable since these organisms appear to be emerging pathogens. Azole resistant species as Candida krusei and C. glabrata were mostly recovered from HIV positive patients, exposed to fluconazole treatment. A very low number of amfotericin B "resistant" yeasts (n = 9) were observed in both groups. However, resistance to azole drugs, particularly to fluconazole, was found in pediatric patients (13%) and in HIV infected adults (34%).
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Affiliation(s)
- L Rodero
- Departamento Micología, Instituto Nacional de Microbiología Dr. Carlos G. Malbrán, Buenos Aires, Argentina
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Filla A, De Michele G, Cavalcanti F, Pianese L, Monticelli A, Campanella G, Cocozza S. The relationship between trinucleotide (GAA) repeat length and clinical features in Friedreich ataxia. Am J Hum Genet 1996; 59:554-60. [PMID: 8751856 PMCID: PMC1914893] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Friedreich ataxia (FA) is associated with the expansion of a GAA trinucleotide repeat in the first intron of the X25 gene. We found both alleles expanded in 67 FA patients from 48 Italian families. Five patients from three families were compound heterozygotes with expansion on one allele and an isoleucine-->phenylalanine change at position 154 on the other one. We found neither expansions nor point mutations in three patients. The length of FA alleles ranged from 201 to 1,186 repeat units, with no overlap with the normal range, and showed a negatively skewed distribution with a peak between 800 and 1,000 repeats. The FA repeat showed meiotic instability with a median variation of 150 repeats. The lengths of both larger and smaller alleles in each patient inversely correlated with age at onset of the disorder. Smaller alleles showed the best correlation, accounting for approximately 50% of the variation of age at onset. Mean allele length was significantly higher in patients with diabetes and in those with cardiomyopathy.
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Affiliation(s)
- A Filla
- Department of Neurology, Federico II University, Naples, Italy
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33
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De Stefano V, Salvatore G, Monticelli A, Riccio P, Cappabianca P, Bucciero A. Prognostic significance of nucleolar organizer regions in meningiomas. J Neurosurg Sci 1996; 40:89-92. [PMID: 9049889] [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: 02/03/2023]
Abstract
The argyrophilic method for the demonstration of nucleolar organizer region-associated proteins (AgNOR's) was applied to paraffin-embedded histologic sections of 30 meningiomas. These were divided into three groups: 1) group I comprising 10 primary tumors which subsequently recurred within five years; 2) group II including the relative recurrences of the above mentioned primary tumors; 3) group III consisting of 10 nonrecurrent tumors over a follow-up of at least five years. The means of AgNOR counts were 1.58 with a SD of 0.67 for the group I, 1.47 with a SD of 1.04 for the group II, and 1.42 with a SD of 0.62 for the group III. A statistical analysis of these data using the Student's "t" test showed no significant difference between primary tumors and relative recurrences, as well as between primary and nonrecurrent tumors. However, when the AgNOR number was > 2.0 there was a statistically significant difference between primary and nonrecurrent meningiomas. These results are discussed in light of the findings previously reported by the literature.
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Affiliation(s)
- V De Stefano
- Institute of Pathology, School of Medicine, University of Naples Federico II, Italy
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34
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Campuzano V, Montermini L, Moltò MD, Pianese L, Cossée M, Cavalcanti F, Monros E, Rodius F, Duclos F, Monticelli A, Zara F, Cañizares J, Koutnikova H, Bidichandani SI, Gellera C, Brice A, Trouillas P, De Michele G, Filla A, De Frutos R, Palau F, Patel PI, Di Donato S, Mandel JL, Cocozza S, Koenig M, Pandolfo M. Friedreich's ataxia: autosomal recessive disease caused by an intronic GAA triplet repeat expansion. Science 1996; 271:1423-7. [PMID: 8596916 DOI: 10.1126/science.271.5254.1423] [Citation(s) in RCA: 1876] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Friedreich's ataxia (FRDA) is an autosomal recessive, degenerative disease that involves the central and peripheral nervous systems and the heart. A gene, X25, was identified in the critical region for the FRDA locus on chromosome 9q13. This gene encodes a 210-amino acid protein, frataxin, that has homologs in distant species such as Caenorhabditis elegans and yeast. A few FRDA patients were found to have point mutations in X25, but the majority were homozygous for an unstable GAA trinucleotide expansion in the first X25 intron.
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Affiliation(s)
- V Campuzano
- Department de Genetica, University of Valencia, Spain
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Montermini L, Rodius F, Pianese L, Moltò MD, Cossée M, Campuzano V, Cavalcanti F, Monticelli A, Palau F, Gyapay G. The Friedreich ataxia critical region spans a 150-kb interval on chromosome 9q13. Am J Hum Genet 1995; 57:1061-7. [PMID: 7485155 PMCID: PMC1801369] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
By analysis of crossovers in key recombinant families and by homozygosity analysis of inbred families, the Friedreich ataxia (FRDA) locus was localized in a 300-kb interval between the X104 gene and the microsatellite marker FR8 (D9S888). By homology searches of the sequence databases, we identified X104 as the human tight junction protein ZO-2 gene. We generated a large-scale physical map of the FRDA region by pulsed-field gel electrophoresis analysis of genomic DNA and of three YAC clones derived from different libraries, and we constructed an uninterrupted cosmid contig spanning the FRDA locus. The cAMP-dependent protein kinase gamma-catalytic subunit gene was identified within the critical FRDA interval, but it was excluded as candidate because of its biological properties and because of lack of mutations in FRDA patients. Six new polymorphic markers were isolated between FR2 (D9S886) and FR8 (D9S888), which were used for homozygosity analysis in a family in which parents of an affected child are distantly related. An ancient recombination involving the centromeric FRDA flanking markers had been previously demonstrated in this family. Homozygosity analysis indicated that the FRDA gene is localized in the telomeric 150 kb of the FR2-FR8 interval.
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Affiliation(s)
- L Montermini
- Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
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De Lorenzo F, Monticelli A, Cocozza S. Early onset of coronary heart disease is associated with apo AI-CIII SstI polymorphism. Aust N Z J Med 1994; 24:579-80. [PMID: 7848167 DOI: 10.1111/j.1445-5994.1994.tb01766.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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De Michele G, Filla A, Cavalcanti F, Di Maio L, Pianese L, Castaldo I, Calabrese O, Monticelli A, Varrone S, Campanella G. Late onset Friedreich's disease: clinical features and mapping of mutation to the FRDA locus. J Neurol Neurosurg Psychiatry 1994; 57:977-9. [PMID: 8057123 PMCID: PMC1073086 DOI: 10.1136/jnnp.57.8.977] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Twenty two patients from 17 families with Friedreich's disease phenotype but with onset ranging from the ages of 21 to 36 are described. Comparison with "typical" Friedreich's disease with onset before 20 years of age showed only a lower occurrence of skeletal deformities. The peripheral and central neurophysiological findings, sural nerve biopsy, and the neuroradiological picture did not allow the differentiation between "late onset" and "typical" Friedreich's disease. Duration of disease from onset to becoming confined to a wheelchair was five years longer in late onset patients. Sixteen patients and 25 healthy members from eight families were typed with the chromosome 9 markers MLS1, MS, and GS4 tightly linked to the FRDA locus. All families showed positive lod scores with a combined value of 5.17 at a recombination fraction of theta = 0.00. It is concluded that "late onset" Friedreich's disease is milder than the "typical" form and that it maps to the same locus on chromosome 9.
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Pandolfo M, Pizzuti A, Redolfi E, Munaro M, Di Donato S, Cavalcanti F, Filla A, Monticelli A, Pianese L, Cocozza S. Isolation of a new gene in the Friedreich ataxia candidate region on human chromosome 9 by cDNA direct selection. Biochem Med Metab Biol 1994; 52:115-9. [PMID: 7993657 DOI: 10.1006/bmmb.1994.1041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The Friedreich ataxia (FRDA) locus is localized on chromosome 9q13 in an interval less than 1 Mb between markers D9S202/FR1 and FR5. We cloned the FRDA candidate region in YACs, and we started a systematic search for transcripts in this region using the cDNA selection approach. Several overlapping cDNA clones mapping near the telomeric end of the FRDA minimum genetic region were isolated. Zoo blot analysis demonstrated that these cDNAs are well conserved among different species. A transcript of 4.8 kb was identified by hybridization to a Northern blot containing human brain poly(A)+ RNA. Partial sequence of these clones showed 100% homology with a previously described anonymous brain cDNA (EST01251). A search for mutations of this gene in FRDA patients and carriers is in progress. No mutations have been found to date, but we have identified a DNA polymorphism. This polymorphism was nonrecombinant with the disease in a previously described FRDA pedigree in which a recombination had occurred with more telomeric markers.
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Affiliation(s)
- M Pandolfo
- Istituto Nazionale Neurologico C. Besta, Milan, Italy
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De Lorenzo F, Monticelli A, Cocozza S, De Simone B, Rubba P. Extracoronary atherosclerosis and genetic variants of apolipoprotein AI-CIII cluster in myocardial infarction survivors from southern Italy. Clin Investig 1994; 72:435-41. [PMID: 7950154 DOI: 10.1007/bf00180517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The relationships between some genetic markers, as evaluated by DNA analysis, and ultrasound evidence of extracoronary athero-sclerosis, as detected by ultrasound methods, were evaluated in 39 myocardial infarction survivors of middle age and in 40 healthy controls of comparable age. Coronary heart disease (CHD) patients showed higher levels of triglycerides (P = 0.01) and greater number of exsmokers (P = 0.004). Carotid stenoses (> 15%) were detected in ten CHD patients and in two controls; iliac stenoses (> 15%) or abnormal ankle/arm ratio (< 0.97) were found in ten CHD patients and in one control; the scores of vascular disease severity in the myocardial infarction survivors were higher (Mann-Whitney test) than in controls (P < 0.01). Molecular genetic analysis of SstI restriction fragment length polymorphism (RFLP) of the apolipoprotein (apo) AI-CIII cluster and of the apo B gene demonstrated a higher frequency of the S2 allele (SstI RFLP) in coronary patients than in controls (P = 0.04) and no significant differences in the frequencies of XbaI RFLP of the apo B gene between patients and controls. The relative risk of myocardial infarction associated with an abnormal vascular score (> 8) or with the presence of the rare allele S2 (SstI apo AI-CIII polymorphism) was estimated by odds ratios. The lower 95% limits of odds ratios were above 1 (indicating significant increase in the relative risk of myocardial infarction) both in the case of vascular score and that of SstI RFLP. These associations were independent of one another and of triglyceride levels. SstI RFLP association with CHD disappeared after adjustment for smoking habits.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- F De Lorenzo
- Institute of Internal Medicine and Metabolic Diseases, Policlinico, Naples, Italy
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Iaconetta G, Lamaida E, Rossi A, Bernardo A, De Caro ML, Monticelli A, Maiuri F. Cerebellar medulloblastoma in adults: report of 15 cases and review of the literature. Acta Neurol (Napoli) 1994; 16:38-45. [PMID: 8073915] [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
From 1974 to 1988, 15 adult patients (aged over 16 years) with cerebellar medulloblastomas were observed in our Neurosurgical Department. All were treated by total (8 patients) or subtotal (7 patients) resection of the tumor, followed by radiation therapy to the posterior cranial fossa, spine and whole brain. A 5-year survival was achieved in 7 patients (46.6%). Local tumor recurrence occurred in 4 patients. The best treatment and the factors that influence the prognosis and survival of adult medulloblastomas are discussed also from the analysis of the pertinent literature.
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Affiliation(s)
- G Iaconetta
- Institute of Neurosurgery, School of Medicine, University of Naples, Federico II
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Pianese L, Cocozza S, Campanella G, Castaldo I, Cavalcanti F, De Michele G, Filla A, Monticelli A, Munaro M, Redolfi E. Linkage disequilibrium between FD1-D9S202 haplotypes and the Friedreich's ataxia locus in a central-southern Italian population. J Med Genet 1994; 31:133-5. [PMID: 8182719 PMCID: PMC1049675 DOI: 10.1136/jmg.31.2.133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We used two recently described genetic markers in the region of the Friedreich's ataxia locus to study 33 affected pedigrees from central-southern regions of Italy. These markers are predicted, by physical mapping, to be localised more closely to the Friedreich's ataxia locus than other previously described markers. No recombination was found between these markers and the disease locus. Strong linkage disequilibrium is present between the compound haplotype and the disease locus. Since this population was also previously studied by using three other more distal genetic markers, a total of five markers has been used to identify the extended haplotype. Homozygosity in consanguineous pedigrees was also studied. Extended haplotype analysis and homozygosity studies suggest the presence of few common disease causing mutations in our population.
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Affiliation(s)
- L Pianese
- Dipartimento di Biologia e Patologia Cellulare e Molecolare CEOS, CNR Università degli Studi di Napoli, Italy
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De Lorenzo F, Monticelli A, Cocozza S. SstI APO AI-CIII DNA polymorphism associated with lower levels of HDL cholesterol in a young population from south of Italy. Aust N Z J Med 1993; 23:711-2. [PMID: 7908186 DOI: 10.1111/j.1445-5994.1993.tb04733.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- F De Lorenzo
- Institute of Internal Medicine and Metabolic Diseases, 2nd Medical School, University of Naples, Italy
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De Lorenzo F, Rubba P, Monticelli A, Cocozza S. Coronary heart disease, echo-Doppler evidence of peripheral arterial disease and polymorphism of apolipoprotein B gene and Apo AI/CIII cluster. Angiology 1993; 44:785-90. [PMID: 8105730 DOI: 10.1177/000331979304401004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 01/28/2023]
Abstract
The possible associations between coronary heart disease (CHD) and peripheral arterial disease (PAD), detected by echo-Doppler analysis, with restriction fragment length polymorphism (RFLP) of apo AI/CIII cluster and apo B gene were investigated in a group of men with premature CHD (n = 39) and in a control group of men without evidence of CHD (n = 40). The genetic analysis of SstI RFLP of apo AI/CIII cluster showed a significantly higher frequency of the rare SstI allele (S2) in CHD patients (0.16) as compared with controls (0.06). No significant differences were found in the frequencies of XbaI RFLP for the apo B gene between CHD patients and controls. Moreover, patients with PAD showed no significant differences in the frequencies of XbaI RFLP for the apo B gene and of SstI RFLP for the apo AI/CIII cluster as compared with patients without evidence of peripheral arterial disease detected by echo-Doppler analysis.
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Affiliation(s)
- F De Lorenzo
- Institute of Internal Medicine and Metabolic Diseases, 2nd Medical School University of Naples, Italy
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Pandolfo M, Munaro M, Cocozza S, Redolfi EM, Pianese L, Cavalcanti F, Monticelli A, Di Donato S. A dinucleotide repeat polymorphism (D9S202) in the Friedreich's ataxia region on chromosome 9q13-q21.1. Hum Mol Genet 1993; 2:822. [PMID: 8353506 DOI: 10.1093/hmg/2.6.822] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Affiliation(s)
- M Pandolfo
- Divisione di Biochimica e Genetica del Sistema Nervoso, Istituto Nazionale Neurologico C. Besta, Milan, Italy
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Cocozza S, Antonelli A, Campanella G, Cavalcanti F, De Michele G, Di Donato S, Filla A, Monticelli A, Pianese L, Piccinelli A. Evidence of a genetic marker associated with early onset in Friedreich's ataxia. J Neurol 1993; 240:254-6. [PMID: 8496716 DOI: 10.1007/bf00818715] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We evaluated the association between age at onset of Friedreich's ataxia and alleles of two restriction fragment length polymorphisms (RFLP) at D9S15 and D9S5 in the 9q13-9q21.1 region. We studied 65 Italian patients from 49 families. Age at onset was not normally distributed in our patients, suggesting allelic heterogeneity. Patients homozygous for allele 1 of MspI RFLP detected by probe MCT112 at D9S15 (M1) had an earlier onset (mean 9.3, SD 3.4 years) than patients homozygous for allele 2 (M2; mean 12.1, SD 4.3). Heterozygotes had an onset age similar to that of the M2 homozygotes. These findings suggest that the M1 allele might be a marker of one allelic early-onset Friedreich's ataxia mutation.
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Affiliation(s)
- S Cocozza
- Department of Cellular and Molecular Biology and Pathology and CEOS CNR, Second School of Medicine, Federico II University, Naples, Italy
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Sirugo G, Cocozza S, Brice A, Cavalcanti F, De Michele G, Dones I, Filla A, Koenig M, Lorenzetti D, Monticelli A. Linkage disequilibrium analysis of Friedreich's ataxia in 140 Caucasian families: positioning of the disease locus and evaluation of allelic heterogeneity. Eur J Hum Genet 1993; 1:133-43. [PMID: 7914465 DOI: 10.1159/000472400] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 01/27/2023] Open
Abstract
We investigated linkage disequilibrium between Friedreich's ataxia (FRDA) and four tightly linked multi-allele markers in 140 families from France and Italy. These markers include three microsatellites (D9S111, D9S15 and D9S110) and one RFLP (D9S5). Their chromosomal order, D9S111-D9S15-D9S110-D9S5, had previously been established by physical mapping. Linkage disequilibrium was evaluated between each marker and FRDA and between markers. Extended haplotypes were obtained and their frequencies on FRDA and normal chromosomes were evaluated. We obtained evidence of strong allelic association of FRDA with D9S5 only. Analysis of linkage disequilibrium between markers revealed a significant decrease between D9S110 and D9S5, suggesting the presence of a recombination hot spot in the interval between these markers. Probably for this reason, no major FRDA-associated extended haplotype could be identified. Our data suggest the presence of a few common disease-causing mutations in the examined population, and indicate a putative localization for the FRDA gene. Transcribed sequences have been found in this candidate region.
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Affiliation(s)
- G Sirugo
- Institut de Chimie Biologique, INSERM U-184, CNRS-LGME, Strasbourg, France
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Cavalcanti F, Cocozza S, Filla A, De Michele G, Pianese L, Porcellini A, Monticelli A, Pandolfo M, Banfi S, Varrone S. Friedreich's disease. A linkage study in southern and central Italy. Acta Neurol (Napoli) 1992; 14:519-23. [PMID: 1363458] [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: 03/25/2023]
Abstract
We studied linkage and linkage disequilibrium between the genetic locus of Friedreich's disease (FRDA) and two maker loci (D9S15 and D9S5) of chromosome 9q13-q21.1 in 49 subjects from 12 families in southern and central Italy. No recombination event occurred between D9S15 and D9S5, or between these polymorphisms and FRDA. Linkage disequilibrium was not observed between D9S15 or D9S5 or the extended haplotypes and FRDA, but was present between the two polymorphisms.
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Affiliation(s)
- F Cavalcanti
- Department of Neurology, School of Medicine, Federico II University, Napoli
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Cocozza S, Porcellini A, Riccardi G, Monticelli A, Condorelli G, Ferrara A, Pianese L, Miele C, Capaldo B, Beguinot F. NIDDM associated with mutation in tyrosine kinase domain of insulin receptor gene. Diabetes 1992; 41:521-6. [PMID: 1607076 DOI: 10.2337/diab.41.4.521] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A population of 103 patients with non-insulin-dependent diabetes mellitus (NIDDM) was screened for mutations in the tyrosine kinase domain of the insulin receptor gene. Patient genomic DNAs corresponding to exons 17-21 of the insulin receptor gene have been amplified by polymerase chain reaction and analyzed by denaturing gradient gel electrophoresis (DGGE). One patient was identified with an altered pattern of mobility of exon 20 in the DGGE assay. Direct sequence of amplified DNA showed a single nucleotide substitution in the codon 1152 (CGG-- greater than CAG), resulting in the replacement of Arg with Gln. Two bands appeared in the sequence of exon 20 of the insulin receptor (nucleotide position 3584), indicating that this patient was heterozygous for the mutation. Insulin binding to intact erythrocytes from the patient was in the normal range. Although autophosphorylation of the purified insulin receptor also seemed normal, its kinase activity toward the exogenous substrate poly Glu:Tyr (4:1) was undetectable. This mutation may impair insulin receptor kinase and contribute to insulin resistance in this patient.
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Affiliation(s)
- S Cocozza
- Department of Cellular and Molecular Biology and Pathology, L. Califano, Centro di Endocrinologia ed Oncologia Sperimentale del Consiglio Nazionale delle Richerche; Naples, Italy
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De Lorenzo F, De Simone B, Irace C, Carbone L, Gnasso A, Liguori M, Monticelli A, Cocozza S, Cortese C, Rubba P. Early signs of carotid and iliac atherosclerosis in patients with severe hyperlipoproteinemia. INT ANGIOL 1992; 11:122-6. [PMID: 1357042] [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: 03/25/2023]
Abstract
Hyperlipidemia is a major risk factor for atherosclerosis. Early signs of cardiovascular disease can be detected also in asymptomatic patients with hyperlipidemia. Forty-four patients with serum cholesterol greater than 300 mg/dl (7.8 mmol/l) and/or serum triglycerides greater than 500 mg/dl (5.6 mmol/l) and 35 healthy controls had their carotid and iliac arteries examined by echo-Doppler with spectral analysis. Systolic ankle pressure was also measured. A vascular score was calculated: a 0 score was assigned to normal findings and a 1 score for each artery with abnormality at echo-Doppler or Winsor index less than 0.97. The XbaI Restriction Fragment Length Polymorphism of Apo B gene was investigated in all hyperlipidemic patients. Arterial lesions, especially those of internal carotid and iliac arteries, were more frequent (p less than 0.01) in patients with high serum lipids, compared to controls. Patients with lesions were older and had higher serum triglyceride concentrations compared to those without lesions. When divided according to serum triglycerides, patients with concentrations exceeding 200 mg/dl had higher vascular score (p less than 0.02) compared to those with serum triglycerides less than 200 mg/dl. No difference in restriction fragment length polymorphism (XbaI) of Apo B gene was demonstrated in patients with arterial lesions compared to those without lesions. Non-invasive echo-Doppler examination gives useful information on the arterial involvement of hyperlipidemic patients and its use should therefore be implemented, especially when high triglyceride concentrations are present.
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Affiliation(s)
- F De Lorenzo
- Institute of Internal Medicine and Diseases of Metabolism, CEOS CNR, Naples, Italy
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Porcellini A, Cocozza S, Monticelli A, Pianese L, Riccardi G, Ferrara A, Varrone S. Mutations in insulin-receptor gene. Val996 allele in white NIDDM patients. Diabetes Care 1992; 15:591-2. [PMID: 1499491 DOI: 10.2337/diacare.15.4.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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