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Jacobs IN, Giordano T, Soaper A, Din TF, Faig W, de Alarcon A, Balakrishnan K, Prager JD, Michael R, Douglas S, Piccione J. A multicenter study analyzing the impact of pre-existing comorbidities on laryngotracheal reconstruction (LTR) outcomes. Int J Pediatr Otorhinolaryngol 2023; 172:111631. [PMID: 37567085 DOI: 10.1016/j.ijporl.2023.111631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/11/2023] [Revised: 05/30/2023] [Accepted: 06/11/2023] [Indexed: 08/13/2023]
Abstract
INTRODUCTION Comorbidities such as chronic lung disease and gastroesophageal reflux (GERD), prematurity, and numerous other conditions may impact the success of LTR. Single-center studies are limited in terms of patient numbers and may be underpowered. OBJECTIVES To analyze the impact of specific comorbidities on the operation-specific and overall surgical success of LTR in a large multicenter cohort and validate a predictive model for surgical success. METHODS A large retrospective multicenter 10-year review was undertaken to validate the data of a previous single-center study (Wertz et al. Laryngoscope 2020) which identified specific predictive comorbidities which impacted LTR outcomes. A Monte Carlo simulation based on the previous data set suggested that 300-400 cases would be needed to optimize the statistical power of a Bayesian model developed from the single-center data to predict surgical success. An IRB-approved data-sharing agreement was executed for 4 large U.S. CENTERS A virtual REDCap® data entry form inquired about patient characteristics that best predicted surgical success in the single-center model. These included demographics, surgical approaches, cardiac, airway, genetic, endocrine, musculoskeletal, gastrointestinal, and pulmonary comorbidities; details of the surgical procedures, and results of esophagogastroduodenoscopy (EGD), esophageal pH/impedance and flexible bronchoscopy with bronchioalveolar lavage (BAL) were included. Surgical success defined as successful decannulation or resolution of airway symptoms was recorded as single surgery success and overall success following open surgical revision surgery. Multivariate Bayesian analysis, logistical regression, and Kaplan-Meier analysis were performed. RESULTS 542 patients were identified, including 165 from the single-center study and an additional 377 patients from the multicenter group. The median age was 36 months at the time of the most recent surgery. 70.9% of the LTRs were double-staged procedures. The overall success rate was 86.4% and operation-specific success rate was 69.2%. The specific comorbidities and aerodigestive test results that impacted success based on univariate analysis included staging, bronchiectasis, pulmonary hypertension, GERD, ASD, PDA, grade of stenosis, advanced levels of stenosis, Trisomy 21, MRSA, prior open surgery at another hospital, and gross appearance on EGD. Bayesian model averaging with backward selection was used to validate and refine a predictive model for surgical success with favorable receiver operating curve characteristics - AUC values of 0.827 for single surgery success and 0.797 for overall success. DISCUSSION With over 500 patients reviewed, this was the largest multicenter study of LTR to date, which elucidated the impact of comorbidities on success with LTR and was able to improve upon the predictive modeling based on single-center data. Patient factors are most critical in the outcome of LTR. Stage and levels of stenosis, as well as pulmonary and GI conditions most strongly impact the likelihood of success. Future prospective case-control studies will be performed to further optimize the current model for outcome prediction and patient management.
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Affiliation(s)
- Ian N Jacobs
- Division of Otolaryngology, Children's Hospital of Philadelphia, 3500 Civic Center Boulevard, 5th Floor, Philadelphia, PA, 19104, USA.
| | - Teresa Giordano
- Division of Otolaryngology, Children's Hospital of Philadelphia, 3500 Civic Center Boulevard, 5th Floor, Philadelphia, PA, 19104, USA.
| | - Ashley Soaper
- Division of Pediatric Otolaryngology-HNS, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
| | - Taseer Feroze Din
- Division of Pediatric Otolaryngology, Lucile Packard Children's Hospital of Stanford University, 730 Welch Rd, 1st Floor, Palo Alto, CA, 94304, USA.
| | - Walter Faig
- Wescott Department of Biostatistics, Children's Hospital of Philadelphia, Roberts Center for Pediatric Research, 2716 South Street, Philadelphia, PA, 19146, USA.
| | - Alessandro de Alarcon
- Division of Pediatric Otolaryngology-HNS, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
| | - Karthik Balakrishnan
- Division of Pediatric Otolaryngology, Lucile Packard Children's Hospital of Stanford University, 730 Welch Rd, 1st Floor, Palo Alto, CA, 94304, USA.
| | - Jeremy D Prager
- Department of Pediatric Otolaryngology, Children's Hospital of Colorado, 13123 E. 16th Avenue, Aurora, CO, 80045, USA.
| | - Rutter Michael
- Division of Pediatric Otolaryngology-HNS, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
| | - Sidell Douglas
- Division of Pediatric Otolaryngology, Lucile Packard Children's Hospital of Stanford University, 730 Welch Rd, 1st Floor, Palo Alto, CA, 94304, USA.
| | - Joseph Piccione
- Division of Pulmonary and Sleep Medicine, Children's Hospital of Philadelphia, 3500 Civic Center Boulevard, 14th Floor, Philadelphia, PA, 19104, USA.
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Giordano T, Durkin A, Simi A, Shannon M, Dailey J, Facey H, Ballester L, Wetmore RF, Germiller JA. High-Dose Celecoxib for Pain After Pediatric Tonsillectomy: A Randomized Controlled Trial. Otolaryngol Head Neck Surg 2023; 168:218-226. [PMID: 35412873 DOI: 10.1177/01945998221091695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/12/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Pediatric tonsillectomy causes significant postoperative pain. Newer nonsteroidal anti-inflammatory drugs such as celecoxib control pain without increasing bleeding risk, but in prior studies provided only modest pain reduction at standard doses. We aimed to determine if high-dose celecoxib (double the usual pediatric dose) is effective for pain, without increasing bleeding or other risks. STUDY DESIGN Randomized double-blind trial. SETTING Pediatric tertiary center. METHODS Children aged 3 to 11 years undergoing total tonsillectomy were randomized to receive celecoxib (6 mg/kg/dose) or placebo, twice daily, for up to 10 days. All cases were supplemented with acetaminophen and oxycodone as needed. All participants and personnel were blinded to treatment group. Subjects recorded coanalgesic consumption, pain, diet, and activity. RESULTS The celecoxib group (n = 68) consumed 0.72 mg/kg of oxycodone, as compared with 1.12 mg/kg in the placebo group (n = 62), a 36% difference that was not significant. However, multivariate analysis by treatment group, separate from pain levels, confirmed that this reduction was due to celecoxib treatment (P = .03). In subjects with more prolonged pain (n = 88), celecoxib reduced consumption by 52% (P = .02). Celecoxib showed greater benefit for subjects in the prolonged pain group than for those in the lesser pain group (P = .006). Incidence of adverse events was similar between groups. Minor hemorrhage occurred in 4.6% (5 placebo, 3 celecoxib). CONCLUSION High-dose celecoxib is effective in controlling pain after tonsillectomy, with no adverse effects in this relatively small sample. It reduces narcotic consumption, and its impact appears greater in children with higher degrees of pain. Celecoxib can be considered an effective alternative to ibuprofen after tonsillectomy. This trial was registered at ClinicalTrials.gov: NCT02934191.
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Affiliation(s)
- Teresa Giordano
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Alexandra Durkin
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Andrea Simi
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Megan Shannon
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Julia Dailey
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Hannah Facey
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Lance Ballester
- Biostatistics and Data Management Core, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Ralph F Wetmore
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John A Germiller
- Division of Pediatric Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.,Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Kiraly M, Foss JF, Giordano T. Neuroinflammation, its Role in Alzheimer's Disease and Therapeutic Strategie. J Prev Alzheimers Dis 2023; 10:686-698. [PMID: 37874089 DOI: 10.14283/jpad.2023.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Neuroinflammation precedes the clinical onset of various neurodegenerative diseases, including Alzheimer's disease (AD), by years or frequently even decades (1-3). In terms of the underlying physiology, there is a great need for understanding and controlling interactions between the central nervous system (CNS) and the immune system in an attempt to develop approaches to prevent or delay the disease's progression. Nerve cells have limited motion capability, whereas immune cells can migrate freely via circulation. This difference raises a variety of questions in the context of senile plaque formation and phagocytosis. Broad-scale unbiased genomic studies bring several genetic variants such as sialic acid binding Ig-like lectin 3 (CD33), triggering receptor expressed on myeloid cells 2 (TREM2) or complement receptor type 1 (CR1) into the focus of researchers' attention as potential risk factors for neuroinflammation. In addition, advanced proteomic analyses have been revealing links between these genetic contributors and complex, malfunctioning signaling pathways (including the upregulation of factors like tumor necrosis factor TNF-α, tumor growth factor TGF-β and interleukin IL-1α) that promote proinflammatory mechanisms via intracellular signaling and trafficking, synaptic function, and cell metabolism/ proliferation. In AD, the brain's microglia and astrocytes, which are normally responsible for maintaining the homeostasis of synaptic transmission and its remodeling by pruning, are the initiators of neuroinflammation and toxic tau and amyloid-β (Aβ) accumulation. Thus, they drive the CNS into a state of sustained or even self-accelerated deterioration. Here we aim to review the cell types and mediators involved in neuroinflammation and AD, the symptom manifestation in clinical settings, and potential candidates for improving diagnosis and treatment.
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Affiliation(s)
- M Kiraly
- Tony Giordano, NeuroTherapia, Inc. 10000 Cedar Ave., GCIC Building, Cleveland, OH 44106, USA, , phone: 440-228-4089, fax: 440-389-4501
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Gharzai L, Green M, Griffith K, Else T, Spratt D, Miller B, Worden F, Hammer G, Giordano T, Hesseltine E, Sabolch A, Ben-Josef E, Jolly S. Improvement in Recurrence-free Survival with Adjuvant Radiation in Adrenocortical Carcinoma. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Toner D, Giordano T, Handler SD. Office frenotomy for neonates: resolving dysphagia, parental satisfaction and cost-effectiveness. ORL Head Neck Nurs 2014; 32:6-7. [PMID: 24937906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To determine parental satisfaction and cost-effectiveness of having a frenotomy performed in the office setting versus in the operating room under general anesthesia. METHOD After obtaining IRB approval at The Children's Hospital of Philadelphia (CHOP), we performed a retrospective chart review of patients having a frenotomy in the office between 2003-2008. 55 patients met the criteria and 25 were consented and their parents interviewed. CONCLUSION All participants reported an improvement in feeding within one day and up to two weeks following the procedure. Parents also reported being somewhat satisfied to very satisfied with having the frenotomy performed in the office versus under general anesthesia. There were no complications reported. Performing the frenotomy in the office provided patients with satisfaction as well as cost savings. The surgical fee for a frenotomy in the office is $850 and is the same as if the procedure is performed in the operating room. Performing a frenotomy under general anesthesia includes extra cost which consists of an anesthesia fee of $500-$900 and hospital charges ranging from $500-$8,000. Performing the frenotomy in the office on our 25 patients has resulted in a cost savings of more than $240,000 and the avoidance of general anesthesia in the first few weeks of life. Office frenotomy should be considered in children with ankyloglossia who present with difficulty nursing in the first week of life.
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Ha HT, Lee JS, Urba S, Koenig RJ, Sisson J, Giordano T, Worden FP. Phase II trial evaluating imatinib (I) in patients (pts) with anaplastic thyroid carcinoma (ATC). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.6057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
6057 Background: There is no standard treatment for ATC. Response to doxorubicin ranges between 5–22%; median survival ranges between 3–6 months. Affymetrix gene chip showed PDGFR overexpression in ATC. In p53 mutated/deficient ATC cell lines, c-Abl is overexpressed, and selective inhibition of c-Abl resulted in cytostatic effect. (I) inhibits tyrosine kinase activity of Bcr-Abl and PDGF. We hypothesize that ATC that overexpress PDGFR or Abl will respond to (I). Methods: Pts ≥ 18 years old with histologically confirmed ATC, overexpressing PDGFR or c-Abl by immunohistochemistry who had measurable disease were eligible. Pts must have Zubrod performance status ≤ 1, and adequate hepatic and renal function. Prior chemotherapy, chemoradiation, radiation therapy, or surgery must have been completed at least 28 days prior to registration. (I) was administered at 400mg orally twice daily without drug holiday. Response to treatment was assessed after every 8 weeks. Pts with complete response (CR)/partial responses (PR)/stable disease (SD) were treated until disease progression. The study was terminated early due to poor accrual. Results: From February 2004 to May 2007, eleven pts from our institution were enrolled and were started on (I) (6 men; 5 women) with a median age of 63 years (ranges 53–80). At baseline, 4/11 pts (36%) had locoregional disease, 5/11 pts (45%) had distant metastases, and 2/11 pts (18%) had both. Nine pts had prior chemoradiation, and 7 pts had thyroidectomy. Out of 11 pts, 8 were evaluable for response; 3 were excluded for lack of follow up radiological evaluation. The overall responses at 8 weeks were CR 0/8; PR 2/8 (25%); SD 4/8 (50%); and PD 2/8 (25%). The median time to follow up was 26 months (ranges 23–30 months). The estimate of 6-month progression free survival was 27% (95% CI, 7–54%). The estimate of 6-month overall survival was 46% (95% CI, 17–71%). The most common G3 toxicity was lymphopenia in 45%; other G3 toxicities included edema (27%), anemia (18%), and hyponatremia (18%). There was no G4 or higher or treatment related death. Conclusions: (I) appears to have activity in advanced ATC and is well tolerated. Due to difficulty of accruing pts with a rare malignancy at a single institution, investigation of (I) in ATC may be warranted in a multi-institution setting. No significant financial relationships to disclose.
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Affiliation(s)
- H. T. Ha
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - J. S. Lee
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - S. Urba
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - R. J. Koenig
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - J. Sisson
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - T. Giordano
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
| | - F. P. Worden
- University of Michigan Comprehensive Cancer Center, Ann Arbor, MI
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Giordano T, Brigatti C, Podini P, Bonifacio E, Meldolesi J, Malosio ML. Beta cell chromogranin B is partially segregated in distinct granules and can be released separately from insulin in response to stimulation. Diabetologia 2008; 51:997-1007. [PMID: 18437352 DOI: 10.1007/s00125-008-0980-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [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] [Received: 10/01/2007] [Accepted: 02/08/2008] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS We investigated, in three beta cell lines (INS-1E, RIN-5AH, betaTC3) and in human and rodent primary beta cells, the storage and release of chromogranin B, a secretory protein expressed in beta cells and postulated to play an autocrine role. We asked whether chromogranin B is stored together with and discharged in constant ratio to insulin upon various stimuli. METHODS The intracellular distribution of insulin and chromogranin B was revealed by immunofluorescence followed by three-dimensional image reconstruction and by immunoelectron microscopy; their stimulated discharge was measured by ELISA and immunoblot analysis of homogenates and incubation media. RESULTS Insulin and chromogranin B, co-localised in the Golgi complex/trans-Golgi network, appeared largely segregated from each other in the secretory granule compartment. In INS-1E cells, the percentage of granules positive only for insulin or chromogranin B and of those positive for both was 66, 7 and 27%, respectively. In resting cells, both insulin and chromogranin B were concentrated in the granule cores; upon stimulation, chromogranin B (but not insulin) was largely redistributed to the core periphery and the surrounding halo. Strong stimulation with a secretagogue mixture induced parallel release of insulin and chromogranin B, whereas with 3-isobutyl-1-methylxantine and forskolin +/- high glucose release of chromogranin B predominated. Weak, Ca(2+)-dependent stimulation with ionomycin or carbachol induced exclusive release of chromogranin B, suggesting a higher Ca(2+) sensitivity of the specific granules. CONCLUSIONS/INTERPRETATION The unexpected complexity of the beta cell granule population in terms of heterogeneity, molecular plasticity and the differential discharge, could play an important role in physiological control of insulin release and possibly also in beta cell pathology.
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Affiliation(s)
- T Giordano
- Immunology of Diabetes Research Unit, San Raffaele Scientific Institute, Via Olgettina, 60, 20132 Milan, Italy
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Giordano T, Quarta C, Bruno ME, Falagiani P, Riva G. Safety, tolerability and efficacy of sublingual allergoid immunotherapy with a 4-day shortened build-up phase. Eur Ann Allergy Clin Immunol 2006; 38:310-2. [PMID: 17191751] [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: 05/13/2023]
Abstract
BACKGROUND Sublingual specific immunotherapy (SLIT) with monomeric allergoid has shown to be safe and effective the studies performed so far. The build-up phase, however, is rather time consuming mainly if performed with the conventional schedule of 14 weeks. AIMS OF STUDY We evaluated the possibility of shortening and simplifying this phase, through a new build-up scheme of only 4 days, as well as the persistence of the allergoid SLIT efficacy after 12 months. METHODS Thirty-nine patients (26 M, 13 F, mean age 20.5 years, range 6-49) with a history of moderate/severe rhinitis with or without mild asthma due to perennial and/or seasonal allergens entered the study. The posological schedule, adopting only 1,000 AU tablets, was the following: 1/2 tablet the 1st day; 1/2 table twice the second day; 1/2 table plus 1 table the 3rd day, 1 tablet twice the 4th day; 1 tablet twice weekly from the 5th to the 365th day (maintenance therapy). RESULTS Only two mild adverse reactions occurred during the initial phase which disappeared with the prosecution of the treatment. During the maintenance therapy no adverse event was observed. Symptoms improved consistently and drug consumption was reduced in most of the patients. CONCLUSIONS The 4-day shortened build-up phase resulted to be safe, well tolerated and effective, already after one year of treatment.
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MESH Headings
- Administration, Sublingual
- Adolescent
- Adult
- Allergoids
- Animals
- Antigens, Dermatophagoides/administration & dosage
- Antigens, Dermatophagoides/adverse effects
- Antigens, Dermatophagoides/therapeutic use
- Asthma/therapy
- Cats
- Child
- Desensitization, Immunologic/adverse effects
- Desensitization, Immunologic/methods
- Drug Administration Schedule
- Female
- Hair/immunology
- Humans
- Male
- Middle Aged
- Olea
- Parietaria
- Plant Extracts/administration & dosage
- Plant Extracts/adverse effects
- Plant Extracts/therapeutic use
- Poaceae
- Pollen/adverse effects
- Pollen/immunology
- Pyroglyphidae/immunology
- Rhinitis, Allergic, Perennial/therapy
- Rhinitis, Allergic, Seasonal/therapy
- Tablets
- Time Factors
- Treatment Outcome
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Affiliation(s)
- T Giordano
- Allergology and Clinical Immunology Service, Vito Fazzi Hospital, AUSL Lecce 1, Lecce, Italy
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Wevers A, Sullivan JP, Giordano T, Birtsch C, Monteggia LM, Nowacki S, Arneric S, Schröder H. Cellular distribution of the mRNA for the α7 subunit of the nicotinic acetylcholine receptor in the human cerebral cortex. Drug Dev Res 2004. [DOI: 10.1002/ddr.430360205] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Thomas D, Hughes D, Giordano T, McDonagh K, Baker L. 399 Constitutive erbB family phosphorylation in osteosarcoma as a target for CI 1033 inhibition. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80406-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Brichory F, Beer D, Le Naour F, Giordano T, Hanash S. Proteomics-based identification of protein gene product 9.5 as a tumor antigen that induces a humoral immune response in lung cancer. Cancer Res 2001; 61:7908-12. [PMID: 11691811] [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: 02/22/2023]
Abstract
We used a proteomic approach to identify proteins that commonly induce an antibody response in lung cancer. Sera from 64 newly diagnosed patients with lung cancer, 99 patients with other types of cancer, and 71 noncancer controls were analyzed for antibody-based reactivity against lung adenocarcinoma proteins resolved by two-dimensional PAGE. Unlike controls, autoantibodies against a protein identified by mass spectrometry as protein gene product 9.5 (PGP 9.5) were detected in sera from 9 of 64 patients with lung cancer. Circulating PGP 9.5 antigen was detected in sera from two additional patients with lung cancer, without detectable PGP 9.5 autoantibodies. PGP 9.5 is a neurospecific polypeptide previously proposed as a marker for non-small cell lung cancer, based on its expression in tumor tissue. Using A549 lung adenocarcinoma cell line, we have demonstrated that PGP 9.5 was present at the cell surface, as well as secreted. Thus, the findings of PGP 9.5 antigen and/or antibodies in serum of patients with lung cancer suggest that PGP 9.5 may have utility in lung cancer screening and diagnosis.
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Affiliation(s)
- F Brichory
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan 48109, USA
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Malin DH, Crothers MK, Lake JR, Goyarzu P, Plotner RE, Garcia SA, Spell SH, Tomsic BJ, Giordano T, Kowall NW. Hippocampal injections of amyloid beta-peptide 1-40 impair subsequent one-trial/day reward learning. Neurobiol Learn Mem 2001; 76:125-37. [PMID: 11502145 DOI: 10.1006/nlme.2000.3991] [Citation(s) in RCA: 19] [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: 11/22/2022]
Abstract
The injection of amyloid beta-peptide (Abeta) into rat CNS has been reported to induce cellular neuropathology. The present study investigated whether multiple intrahippocampal injections of Abeta 1-40 would impair one-trial/day reward learning 14 days later. Twenty-four male Sprague-Dawley rats, 3-4 months old, were injected with either Abeta 1-40 or distilled water into seven hippocampal sites bilaterally. Ten rats received 3 nmol Abeta 1-40 in 2 microl of distilled water per injection site, while 14 rats received distilled water alone. Following a 9-day recovery period, rats were gradually food deprived to 82% of their initial body weight. Fourteen days after the intrahippocampal injection, all rats received an initial training trial and three subsequent daily retention trials. Rats receiving Abeta 1-40 were significantly impaired on the second retention trial in terms of accuracy (number of unbaited alleys entered) and on the second and third retention trials in terms of speed (reciprocal of latency to reward). Histological analysis showed that Abeta 1-40 injections produced significant neuronal loss and gliosis. Abeta 1-40 immunoreactivity persisted locally at the injection site and in macrophages 2 weeks following the hippocampal injections. These effects appear to be sequence-specific; rats receiving Abeta 1-42 with a scrambled peptide sequence did not differ significantly from rats receiving distilled water alone in retention of the learning task or degree of histological damage.
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Affiliation(s)
- D H Malin
- University of Houston, Clear Lake, Houston, Texas 77058, USA.
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Abstract
RNA folds into complex structures that can interact specifically with effector proteins. These interactions are essential for various biological functions. In order to discover small molecules that can affect important RNA-protein complexes, a thorough analysis of the thermodynamics and kinetics of RNA-protein binding is required. This can facilitate the formulation of high-throughput screening strategies and the development of structure-activity relationships for compound leads. In addition to traditional methods, such as filter binding, gel mobility shift assay and various fluorescence techniques, newer methods such as surface plasmon resonance and mass spectrometry are being used for the study of RNA-protein interactions.
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Affiliation(s)
- K A Xavier
- Message Pharmaceuticals, Malvern, PA 19355, USA.
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Abstract
Cell activation is associated with diverse and widespread changes in gene expression at both the transcriptional and post-transcriptional levels. AUF1 is a recently described cytoplasmic protein which likely participates in the post-transcriptional regulation (PTR) of AU-rich (ARE) mRNAs including those coding for cytokines and proto-oncogenes. Individual mRNAs subject to AUF1-mediated PTR can be predicted if AREs are present or the mRNA in question interacts in vitro or in vivo with AUF1. However, there are few, if any, general approaches for characterizing the overall repertoire of mRNAs subject to PTR by AUF1. In an effort to identify these mRNAs, we incubated total mRNA from mitogen-activated peripheral blood mono-nuclear cells (PBMCs) with AUF1 in vitro. AUF1-mRNA complexes were retarded on membranes, bound mRNAs eluted with high salt, and either used to generate a cDNA library or rebound to AUF1 a second or third time prior to elution and cDNA library construction. We have obtained partial nucleotide sequences from 130 clones which shows that the AUF1 selected libraries are rich in mRNAs containing 3' untranslated region AREs including a large number of early response gene cDNAs. As a test of the validity of this method, we also show that a randomly selected, novel mRNA contained in the library is stabilized upon cell activation.
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Affiliation(s)
- S Bhattacharya
- Department of Pathology and Laboratory Medicine, University of Wisconsin Medical School, Madison, WI 53792, USA
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Zhou LM, Gu ZQ, Costa AM, Yamada KA, Mansson PE, Giordano T, Skolnick P, Jones KA. (2S,4R)-4-methylglutamic acid (SYM 2081): a selective, high-affinity ligand for kainate receptors. J Pharmacol Exp Ther 1997; 280:422-7. [PMID: 8996224] [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] Open
Abstract
Glutamic acid activates ionotropic glutamate receptors that mediate excitatory transmission in the central nervous system. The introduction of a methyl group at position 4 of glutamic acid imparts selectivity for kainate receptors, relative to other (N-methyl-D-aspartate and alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) ionotropic glutamate receptors. Among the stereoisomers of 4-methylglutamic acid, the potency of the (2S,4R)-isomer (SYM 2081) to inhibit [3H]kainic acid binding to both wild-type (rat forebrain) and recombinant (GluR6) kainate receptors (IC50 values of approximately 32 and 19 nM, respectively) was comparable to that of kainic acid (IC50 values of approximately 13 and 28 nM, respectively). SYM 2081 was approximately 800- and 200-fold less potent as an inhibitor of radioligand binding to wild-type (rat forebrain) alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid and N-methyl-D-aspartate receptors, respectively. Preexposure of human embryonic kidney 293 cells stably expressing GluR6 receptors to low concentrations of SYM 2081 (30-300 nM) resulted in a reversible blockade of the rapidly desensitizing currents produced by kainate application. At higher concentrations, SYM 2081 (EC50 of approximately 1 microM) elicited kainate-like, rapidly desensitizing, inward currents. Pretreatment of recombinant GluR6 receptors with concanavalin A both abolished the effect of SYM 2081 to block kainate-induced currents and revealed nondesensitizing currents induced by SYM 2081 alone. The latter observations provide strong support for the hypothesis that SYM 2081 blocks kainate-induced currents through a process of agonist-induced desensitization. SYM 2081 also activated alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor currents in primary cultures of cerebral cortex and, consistent with data obtained by radioligand binding, was approximately 5-fold less potent than kainate (EC50 values of 325 and 70 microM, respectively) in this measure. SYM 2081 is a high-affinity, selective, kainate agonist that may prove useful both as a probe to examine the physiological functions of kainate receptors and as the prototype of a novel class of therapeutic agents.
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Affiliation(s)
- L M Zhou
- Symphony Pharmaceuticals, Inc., Malvern, Pennsylvania, USA
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16
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Riario-Sforza GG, Della Torre F, Antonicelli L, Bonifazi F, Giordano T, D'Amato G, Liccardi G, Bettini P, Incorvaia C. Sensitization to cockroach in Italy: a multicentric study. Allergy Asthma Proc 1997; 18:23-8. [PMID: 9066833 DOI: 10.2500/108854197778612790] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [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: 02/03/2023]
Abstract
The prevalence of sensitization to cockroach (CR) was evaluated by skin prick test (SPT) in 1299 patients consecutively referred for rhinitis and asthma to five allergy centers in northern, central, and southern Italy. In patients with positive SPT to CR, an SPT with D. pteronyssinus extract was made. RAST inhibition was performed with pooled sera of subjects with positive SPT and RAST of at least Class 3 for CR and D. Pteronyssinus, to assess the cross-reactivity between these two allergenic sources. The protein content of allergen extracts was assayed by isoelectric focusing (IEF). A total of 170 patients (13%) had a positive SPT with CR extract, and 133 of them (78.2%) were also positive for D. pteronyssinus. RAST inhibition showed a cross-reactivity between CR and D. pteronyssinus, and IEF detected in the extracts employed a series of bands focusing at the same pI of CR and D. pteronyssinus relevant allergens. Therefore, the prevalence of sensitization to CR in the population studied, corresponding to 13%, suggests that CR extract might be added to standard SPT panels for respiratory allergy. However, the cross-reactivity with D. pteronyssinus calls for careful evaluation of the clinical importance of this sensitization.
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17
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Lin YJ, Bovetto S, Carver JM, Giordano T. Cloning of the cDNA for the human NMDA receptor NR2C subunit and its expression in the central nervous system and periphery. Brain Res Mol Brain Res 1996; 43:57-64. [PMID: 9037519 DOI: 10.1016/s0169-328x(96)00146-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Several overlapping cDNA clones containing 3995 nucleotides of the human 2C NMDA receptor subunit (NR2C) were isolated from human hippocampal and cerebellar cDNA libraries. The nucleic acid sequence of the overlapping cDNA clones displays 85% identity to that of rat NR2C. The predicted protein sequence is 1233 amino acids long and has 88% identity to the amino acid sequence of the rat NR2C, Northern blot analysis has demonstrated a wide distribution pattern of the NR2C transcript in the brain. While the predominant expression is in the cerebellum, as observed in the rat, readily detectable levels are present in the hippocampus, amygdala, caudate nucleus, corpus callosum, subthalamic nuclei and thalamus. NR2C was also detected in the heart, skeletal muscle and pancreas. Distribution of the mouse NR2C NMDA receptor subunit homologue was investigated in mouse brain by in situ hybridization histochemistry using exonic genomic probes. Expression of the transcript was principally in the cerebellum, but is also detected in the hippocampus, dentate gyrus, thalamic and subthalamic nuclei, vestibular nuclei and olfactory bulb. These results demonstrate a widespread expression pattern of the NR2C gene, both in the CNS and in the periphery.
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Affiliation(s)
- Y J Lin
- Symphony Pharmaceuticals, Inc., Department of Molecular Biology, Malvern, PA 19355, USA
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18
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Abstract
BACKGROUND Riedel's thyroiditis is an often disabling disease with clinical and histologic similarity to several other fibrous inflammatory disorders. Surgical treatment alone is often unsatisfactory in permanently alleviating airway compression, dysphagia, neck immobility, pain, or chronic fatigue syndrome. Investigation of drugs shown to be of benefit in the treatment of related fibrous disorders in which hormonal factors or inflammatory deregulation appear to be important is indicated. Tamoxifen has not been previously used in the treatment of Riedel's thyroiditis. METHODS Four patients with clinical and histologic diagnoses of Riedel's thyroiditis were evaluated before and after treatment with tamoxifen. Each had progressive symptomatic disease of 3 to 16 years' duration despite one or more surgical procedures and steroid therapy. Subjective improvement was noted in all cases, and objective changes were confirmed by periodic physical and computed tomographic examinations. RESULTS Patients have been monitored for 1 to 4 years with subjective improvement in 100% and objective disease regression ranging from 50% to 100% in all patients. One patient had complete regression within 6 months, and another had more than 50% regression within 3 months. All have returned to predisease activity levels. There were no significant side effects of the therapy. CONCLUSIONS Tamoxifen has proved to be the most effective drug therapy available for managing Riedel's thyroiditis. Our studies suggest that this is unrelated to antiestrogen activity. Tamoxifen's effectiveness may be caused by a mechanism by which it stimulates the release of transforming growth factor-beta, which may inhibit the fibroblastic proliferation characteristic of Riedel's thyroiditis.
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Affiliation(s)
- J Few
- Department of Surgery, University of Michigan, Ann Arbor, USA
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Carver JM, Mansson PE, Cortes-Burgos L, Shu J, Zhou LM, Howe JR, Giordano T. Cytotoxic effects of kainate ligands on HEK cell lines expressing recombinant kainate receptors. Brain Res 1996; 720:69-74. [PMID: 8782898 DOI: 10.1016/0006-8993(96)00115-1] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Exposure of neurons either for prolonged periods of time or to high concentrations of excitatory amino acids (EAA), such as glutamate, results in neuronal death. Kainate also causes cell toxicity through the glutamate receptors. However, it is unclear whether the kainate receptor itself mediates any of the toxic responses. In the present study, HEK cells expressing the GluR6 +/- KA2 receptor subunit(s) were studied for their susceptibility to toxicity through the kainate receptor by kainate ligands. The natural ligand, glutamate, did not result in toxicity to the recombinant cell lines over that observed with the untransfected HEK cells, whereas kainate produced a 2-3-fold increase in LDH in both the HEK/GluR6 (ANOVA, P = 0.0001) and HEK/GluR6 + KA2 (ANOVA, P = 0.0002) cell lines following treatment with various dosages, but did not affect the HEK cells. Similar 2-3-fold increases in LDH activity were detected in both recombinant cell lines following treatment with 100 nM of SYM2081 ((2S,4R)-4-methylglutamic acid), a dose at which agonistic activity is elicited. The rank order potencies for eliciting toxicity are consistent with the previously reported EC50 values (SYM2081 > kainate > > > glutamate). Surprisingly, the kainate antagonist, NBQX, was the most toxic of the compounds tested although it had an affinity for the kainate receptor similar to glutamate. Treatment with as little as 10 nM elicited a dramatic increase in toxicity (6-10-fold) in the recombinant cell lines. At 1 microM, NBQX was significantly more toxic (Fisher PLSD, P < 0.05) than any of the other compounds tested. Thus, it appears that cell toxicity can be mediated via kainate receptor through two independent mechanisms: activation and blockage of the kainate receptor.
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Affiliation(s)
- J M Carver
- Symphony Pharmaceuticals, Inc., Department of Molecular Biology, Malvern, PA 19355, USA
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21
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Abstract
Binding of ribonucleoproteins to specific regions of mRNA can alter mRNA stability. This level of posttranscriptional regulation has been shown to play a major role in gene expression of eukaryotic cells. This process involves the binding of ribonucleoproteins to specific region(s) of unstable, rapidly degrading mRNAs such as those found in various cytokines, lymphokines, and oncogenes, thereby increasing the mRNA's stability. In many instances the instability of the mRNA has been mapped to an AU-rich motif in the 3' untranslated region. We transcribed RNA molecules containing four reiterations of an AUUUA motif, and demonstrated with RNA- band shift experiments that the AUUUA motif complexes with phosphorylated AUUUA-specific 43-47 kDa mRNA binding protein(s) found in the cytosol of both rat brain and cultured rat astrocytes.
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Affiliation(s)
- D B Jacobs
- Endocrine-Metabolic Division, Veterans Affairs Medical Center, Chicago, IL, USA
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22
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Panico L, D'Antonio A, Salvatore G, Mezza E, Tortora G, De Laurentiis M, De Placido S, Giordano T, Merino M, Salomon DS, Mullick WJ, Pettinato G, Schnitt SJ, Bianco AR, Ciardiello F. Differential immunohistochemical detection of transforming growth factor alpha, amphiregulin and CRIPTO in human normal and malignant breast tissues. Int J Cancer 1996. [PMID: 8543395 DOI: 10.1002/(sici)1097-0215(19960103)65:1<51::aid-ijc9>3.0.co;2-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The expression of growth factors, such as transforming growth factor alpha (TGF alpha), amphiregulin (AR) and CRIPTO, a type-1 tyrosine-kinase growth factor receptor (erbB-2), and a tumor-suppressor gene (p53), that have been implicated in the development and/or the progression of breast cancer, was evaluated by immunohistochemistry in 100 human primary infiltrating breast carcinomas (IBC). AR and CRIPTO immunoreactivity was also assessed in 55 human breast ductal carcinomas in situ (DCIS). Within the 100 IBC, 80, 50, 73, 17, and 34 tumors expressed moderate to high levels of TGF alpha, AR, CRIPTO, erbB-2, and p53 respectively. In addition, AR and CRIPTO immunoreactivity were found in 11 and in 26 out of 55 DCIS respectively. In contrast, only 4, 3, and 2 out of 10 normal mammary-gland samples were weakly positive for TGF alpha, AR, and CRIPTO expression, respectively, whereas none was positive for erbB-2 or p53. Within the 100 IBC, expression of erbB-2 significantly correlated with high histologic and nuclear grading, with high growth fraction, and with estrogen-receptor (ER)- and progesterone-receptor (PgR)-negative tumors. A statistically significant correlation was also observed between p53 expression and high histologic grading, high growth fraction, and PgR-negative tumors. In contrast, no significant correlations were found between TGF alpha, AR, and CRIPTO immunoreactivity and various clinicopathological parameters, with the exception of a positive correlation between TGF alpha and ER expression. These data demonstrate that TGF alpha, AR, and CRIPTO expression are significantly increased in malignant mammary epithelium relative to normal epithelium. In particular, the differential expression of CRIPTO may serve as a potential tumor marker for breast carcinogenesis.
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Affiliation(s)
- L Panico
- Istituto di Patologia, Facoltá di Medicina e Chirurgia, Università degli Studi di Napoli, Italy
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23
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Panico L, D'Antonio A, Salvatore G, Mezza E, Tortora G, De Laurentiis M, De Placido S, Giordano T, Merino M, Salomon DS, Mullick WJ, Pettinato G, Schnitt SJ, Bianco AR, Ciardiello F. Differential immunohistochemical detection of transforming growth factor alpha, amphiregulin and CRIPTO in human normal and malignant breast tissues. Int J Cancer 1996; 65:51-6. [PMID: 8543395 DOI: 10.1002/(sici)1097-0215(19960103)65:1<51::aid-ijc9>3.0.co;2-0] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [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: 01/31/2023]
Abstract
The expression of growth factors, such as transforming growth factor alpha (TGF alpha), amphiregulin (AR) and CRIPTO, a type-1 tyrosine-kinase growth factor receptor (erbB-2), and a tumor-suppressor gene (p53), that have been implicated in the development and/or the progression of breast cancer, was evaluated by immunohistochemistry in 100 human primary infiltrating breast carcinomas (IBC). AR and CRIPTO immunoreactivity was also assessed in 55 human breast ductal carcinomas in situ (DCIS). Within the 100 IBC, 80, 50, 73, 17, and 34 tumors expressed moderate to high levels of TGF alpha, AR, CRIPTO, erbB-2, and p53 respectively. In addition, AR and CRIPTO immunoreactivity were found in 11 and in 26 out of 55 DCIS respectively. In contrast, only 4, 3, and 2 out of 10 normal mammary-gland samples were weakly positive for TGF alpha, AR, and CRIPTO expression, respectively, whereas none was positive for erbB-2 or p53. Within the 100 IBC, expression of erbB-2 significantly correlated with high histologic and nuclear grading, with high growth fraction, and with estrogen-receptor (ER)- and progesterone-receptor (PgR)-negative tumors. A statistically significant correlation was also observed between p53 expression and high histologic grading, high growth fraction, and PgR-negative tumors. In contrast, no significant correlations were found between TGF alpha, AR, and CRIPTO immunoreactivity and various clinicopathological parameters, with the exception of a positive correlation between TGF alpha and ER expression. These data demonstrate that TGF alpha, AR, and CRIPTO expression are significantly increased in malignant mammary epithelium relative to normal epithelium. In particular, the differential expression of CRIPTO may serve as a potential tumor marker for breast carcinogenesis.
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Affiliation(s)
- L Panico
- Istituto di Patologia, Facoltá di Medicina e Chirurgia, Università degli Studi di Napoli, Italy
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24
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Gopalakrishnan M, Buisson B, Touma E, Giordano T, Campbell JE, Hu IC, Donnelly-Roberts D, Arneric SP, Bertrand D, Sullivan JP. Stable expression and pharmacological properties of the human alpha 7 nicotinic acetylcholine receptor. Eur J Pharmacol 1995; 290:237-46. [PMID: 7589218 DOI: 10.1016/0922-4106(95)00083-6] [Citation(s) in RCA: 143] [Impact Index Per Article: 4.9] [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: 01/26/2023]
Abstract
The alpha 7 neuronal nicotinic acetylcholine receptor subtype forms a Ca(2+)-permeable homooligomeric ion channel sensitive to alpha-bungarotoxin in Xenopus oocytes. In this study, we have stably and functionally expressed the human alpha 7 cDNA in a mammalian cell line, HEK-293 and examined its pharmacologic properties. [125I] alpha-Bungarotoxin bound to transfected cells with a Kd value of 0.7 nM and a Bmax value of 973 pmoL/mg protein. No specific binding was detected in untransfected cells. Specific binding could be displaced by unlabeled alpha-bungarotoxin (Ki = 0.5 nM) and an excellent correlation was observed between binding affinities of a series of nicotinic cholinergic ligands in transfected cells and those in the human neuroblastoma IMR-32 cell line. Additionally, cell surface expression of alpha 7 receptors was detected by fluorescein isothiocyanate-conjugated alpha-bungarotoxin in transfected cells. Whole cell currents sensitive to blockade by alpha-bungarotoxin, and with fast kinetics of activation and inactivation, were recorded from transfected cells upon rapid application of (-)-nicotine or acetylcholine with EC50 values of 49 microM and 155 microM respectively. We conclude that the human alpha 7 subunit when expressed alone can form functional ion channels and that the stably transfected HEK-293 cell line serves as a unique system for studying human alpha 7 nicotinic receptor function and regulation, and for examining ligand interactions.
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Affiliation(s)
- M Gopalakrishnan
- Pharmaceutical Products Division, Abbott Laboratories, Abbott Park, IL 60064-3500, USA
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25
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Monteggia LM, Gopalakrishnan M, Touma E, Idler KB, Nash N, Arneric SP, Sullivan JP, Giordano T. Cloning and transient expression of genes encoding the human alpha 4 and beta 2 neuronal nicotinic acetylcholine receptor (nAChR) subunits. Gene X 1995; 155:189-93. [PMID: 7721089 DOI: 10.1016/0378-1119(94)00914-e] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [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: 01/26/2023] Open
Abstract
Partial cDNA clones generated by RT-PCR were used as probes to clone the cDNAs encoding the human alpha 4 and beta 2 neuronal nicotinic acetylcholine receptor (nAChR) subunits. The 2.1-kb alpha 4 cDNA shows 84 and 76% identity to the rat and chicken cDNA sequences, respectively. The deduced amino-acid sequence shares 89 and 84% similarity, respectively, with the corresponding rat and chicken proteins, with most of the divergence occurring in the cytoplasmic domain. The 1721-nucleotide beta 2 sequence was identical to the human beta 2 sequence previously reported. Transfection of the alpha 4 and beta 2 clones into HEK293 cells resulted in the formation of binding sites that display high affinity towards [3H] cytisine, a characteristic of the alpha 4 beta 2 subtype produced in vivo.
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26
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Chandrasekaran K, Giordano T, Brady DR, Stoll J, Martin LJ, Rapoport SI. Impairment in mitochondrial cytochrome oxidase gene expression in Alzheimer disease. Brain Res Mol Brain Res 1994; 24:336-40. [PMID: 7968373 DOI: 10.1016/0169-328x(94)90147-3] [Citation(s) in RCA: 151] [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] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Brains from 5 patients with Alzheimer's disease (AD) showed a 50%-65% decrease in mRNA levels of the mitochondrial-encoded cytochrome oxidase (COX, a marker of oxidative metabolism) subunits I and III in the middle temporal association neocortex, but not in the primary motor cortex, as compared to 5 control brains. The amount of mitochondrial-encoded 12S rRNA was not altered, nor was the amount of nuclear-encoded lactate dehydrogenase B mRNA (a marker of glycolytic metabolism). These data suggest that the decrease in COX I and III subunits mRNA in affected brain regions may contribute to reduced brain oxidative metabolism in AD.
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Affiliation(s)
- K Chandrasekaran
- Laboratory of Neurosciences, National Institute on Aging, Bethesda, MD 20892
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27
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Monteggia LM, Arneric SP, Giordano T. Nicotine effects on the regulation of amyloid precursor protein splicing, neurotrophin and glucose transporter RNA levels in aged rats. Int J Dev Neurosci 1994; 12:133-41. [PMID: 7942088 DOI: 10.1016/0736-5748(94)90006-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [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] Open
Abstract
It has been reported that an inverse relationship exists between nicotine intake and the incidence of Alzheimer's Disease (AD). Although nicotine has been reported to induce c-fos, in the present study it was shown that this induction does not alter the accumulation of a number of transcripts associated with AD. Altered splicing patterns of Amyloid Precursor Protein (APP) and changes in neurotrophin and glucose transporter expression have been implicated in AD and behavioral deficits in rats. The effects of subacute administration of nicotine (12 mg/ml at 2.3 microliters/hr for 14 days) on the abundance levels of APP, glucose transporter (GLUT) and neurotrophin transcripts were determined by rtPCR in the hippocampus, cortex, and striatum of aged (22-24 months) male Wistar rats. No significant differences between saline and nicotine infused rats were detected for APP abundance levels or ratio of the various isoforms. However, both groups had a higher level of APP transcripts containing the Kunitz Protease Inhibitor (KPI) domain in the hippocampus than in either the cortex or striatum. The mean percentages of APP 695 for the two groups were 75% in the hippocampus and 82 and 81% in the cortex and striatum, respectively (P < 0.01). No changes in the abundance of GLUT1, GLUT3, nerve growth factor (NGF) or brain derived neurotrophic factor (BDNF) transcripts were detected. However, since both APP and GLUT1 are thought to be regulated post-transcriptionally, the present results do not rule out a change at the protein level. Further work will be required to determine whether nicotine can influence the expression of these proteins which affect neuronal function.
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28
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Giordano T, Pan JB, Monteggia LM, Holzman TF, Snyder SW, Krafft G, Ghanbari H, Kowall NW. Similarities between beta amyloid peptides 1-40 and 40-1: effects on aggregation, toxicity in vitro, and injection in young and aged rats. Exp Neurol 1994; 125:175-82. [PMID: 8313936 DOI: 10.1006/exnr.1994.1022] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [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
Peptides corresponding to the first 40 amino acids of beta amyloid peptide (beta 1-40) and the reverse sequence (beta 40-1) were synthesized, purified, and compared for their ability to aggregate and cause toxicity in vitro to human neuroblastoma cells (SH-SY5Y), as well as for effects following injection into young or aged rats. Aggregation of both peptides produced similar sedimentation velocity profiles and resulted in significant toxicity in vitro with no observable differences between beta 1-40 and beta 40-1. In addition, when injected into the cortex of young rats, beta 1-40 was more toxic than beta 40-1 although both resulted in significant lesions. However, in aged rats the two peptides resulted in lesions of similar size. Alz 50 staining and abnormal neurites were associated with both beta 1-40 and beta 40-1 lesions; however, no evidence of plaques or tangles was found in either age group. While both peptides were toxic in vitro, only beta 1-40 elicited Alz 50 staining of SH-SY5Y cells. Electron microscopic examination of beta 1-40 and beta 40-1 aggregates showed that beta 1-40 formed fibrillar structures whereas beta 40-1 resulted in amorphous particles. Thus, although both peptides were toxic to cultured cells and aged rats, the toxicities may have resulted from different mechanisms.
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Affiliation(s)
- T Giordano
- Abbott Laboratories, Department of Neuroscience, Abbott Park, Illinois 60064
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29
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Scaravilli F, Giordano T, Quartarone AP, Papalia A, Bronzetti B, Bellantonio R, De Leo S. [Adenocarcinoma of the cecal appendix]. MINERVA CHIR 1993; 48:1467-70. [PMID: 8177453] [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: 01/29/2023]
Abstract
The authors report one rare case of primary adenocarcinoma of the vermiform appendix. The patient, an 83 year old female, presented with a non-pathognomonic symptomatology; diagnosis was made postoperatively. Surgery consisted of appendicectomy. The patient, due to her poor general condition, died three days after surgery for cardiocirculatory complications. In the light of the very rare case published in the literature, some diagnostic, anatomic-clinical, therapeutic and prognostic aspects of this rare tumor are discussed.
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Affiliation(s)
- F Scaravilli
- Divisione di Chirurgia Generale, USL n. 41, Ospedale R. Margherita, Messina
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30
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Wadhwani KC, Fukuyama R, Giordano T, Rapoport SI, Chandrasekaran K. Quantitative reverse transcriptase-polymerase chain reaction of glucose transporter 1 mRNA levels in rat brain microvessels. Anal Biochem 1993; 215:134-41. [PMID: 7507649 DOI: 10.1006/abio.1993.1565] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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: 01/25/2023]
Abstract
We investigated the usefulness of reverse transcriptase-polymerase chain reaction (RT-PCR) to quantify glucose transporter 1 (GLUT1) mRNA in cerebral microvessels. The technique was validated using an in vitro-transcribed RNA fragment (riboprobe) of partial 3' noncoding sequence of rat brain GLUT1 gene. A known amount of the riboprobe was reverse-transcribed to cDNA (target DNA). PCR primers were made to amplify a 292-bp fragment of the target DNA. The 5' primer was end labeled with 32P. An oligonucleotide of 100 bp containing the same sequences as the first 30 and the last 70 bases of the 292-bp fragment of the target DNA was synthesized and used as competitive DNA. The target DNA was coamplified with increasing amounts of competitive DNA using the same two primers. The ratio of radioactivity between amplified products of the target DNA (292-bp fragment) and the competitive DNA (100-bp fragment) was determined quantitatively after separation by gel electrophoresis and radioactivity counting. This method gave an accurate estimation of the amount of the riboprobe in the reaction and a 2- to 5-fold change in the amounts could be detected. By this method, the mean amount of GLUT1 mRNA from purified rat brain microvessels was estimated to be 1.5 +/- 0.1 x 10(-6) ng/ng total RNA. This value was about 10-fold higher than that in rat cell line PC12.
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Affiliation(s)
- K C Wadhwani
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892
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31
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Affiliation(s)
- M Williams
- Pharmaceutical Products Division, Abbott Laboratories, Chicago, Illinois 60064
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32
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Pan JB, Monteggia LM, Giordano T. Altered levels and splicing of the amyloid precursor protein in the adult rat hippocampus after treatment with DMSO or retinoic acid. Brain Res Mol Brain Res 1993; 18:259-66. [PMID: 7684485 DOI: 10.1016/0169-328x(93)90198-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Alzheimer's disease and cognitive impairment in rats has been associated with an increase in the percentage of amyloid precursor protein (APP) containing the KPI domain. It has recently been reported that retinoic acid (RA) is capable of increasing the levels and altering the splicing ratio of APP in cultured SH-SY5Y cells. The effects of peripherally administered RA (64 or 640 micrograms/kg; i.p.; q.d.) on the abundance of APP, the ratio of the three major isoforms, and the relative abundance of nerve growth factor (NGF), brain derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3) were determined by rtPCR in the hippocampus of aged rats. Corresponding changes in choline acetyltransferase (ChAT) activity were also measured. Vehicle (DMSO) treated rats exhibited a 2 x (P < 0.01) increase in total APP and an 8 x (P < 0.001) decrease in the cyclophilin transcript. In addition, DMSO increased the percentage of APP 695 from 89% in saline treated rats to 94%. Treatment of RA in DMSO decreased the accumulation of total APP relative to cyclophilin at both the low (6.4 x; P < 0.01) and high (8 x; P < 0.05) dosages when compared to DMSO treated rats. Furthermore, the level of APP-695 decreased to 82% with low dosage of RA and 75% at high dosage of the total APP transcripts. No significant change in either NGF, NT-3, or BDNF transcripts were observed following low or high dosage RA administration relative to cyclophilin RNA nor was a change in ChAT activity detected at either of the dosages tested.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J B Pan
- Abbott Laboratories, Abbott Park, IL 60064-3500
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Giordano T, Pan JB, Casuto D, Watanabe S, Arneric SP. Thyroid hormone regulation of NGF, NT-3 and BDNF RNA in the adult rat brain. Brain Res Mol Brain Res 1992; 16:239-45. [PMID: 1337933 DOI: 10.1016/0169-328x(92)90231-y] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effects of peripherally administered thyroid hormone (TH; 500 micrograms/kg; i.p.; q.d.) on the relative abundances of nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and neurotrophin-3 (NT-3) RNA were determined by rtPCR in the cortex and hippocampus of young adult rats. Corresponding changes in choline acetyltransferase (ChAT) activity were measured since NGF and BDNF have been shown to enhance the expression of this marker enzyme of central cholinergic pathways. Abundance levels of NGF and NT-3, relative to cyclophilin (cycl), were increased significantly (+50%, P < 0.05) in the hippocampus following TH treatment. Despite enhanced abundance of NGF in the hippocampus, ChAT activity was unchanged, whereas ChAT activity was modestly increased by 28% in the cortex without corresponding changes in NGF, NT-3 or BDNF. These results demonstrate that TH administration is capable of inducing the accumulation of NT-3, in addition to NGF but that the induction levels of RNA cannot be directly correlated with responsivity of the cholinergic system as measured by ChAT activity.
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Affiliation(s)
- T Giordano
- Abbott Laboratories, Neuroscience Research, Abbott Park, IL 60064-3500
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Chandrasekaran K, Stoll J, Giordano T, Atack JR, Matocha MF, Brady DR, Rapoport SI. Differential expression of cytochrome oxidase (COX) genes in different regions of monkey brain. J Neurosci Res 1992; 32:415-23. [PMID: 1279190 DOI: 10.1002/jnr.490320313] [Citation(s) in RCA: 37] [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: 12/26/2022]
Abstract
A frontal pole cDNA library from monkey (Macaca mulatta) brain was screened to identify mRNAs that are expressed more in frontal pole as compared to primary visual cortex. Three cDNA clones, whose greater expression was confirmed by Northern blot analysis, were identified as cytochrome oxidase (COX) subunits I, II, and III (COX I, II, and III). Each clone showed higher levels of mRNA in the frontal pole, dorsal lateral prefrontal cortex, and hippocampus than in the primary visual or somatosensory cortices. COX histochemistry of prefrontal, visual, and somatosensory cortical regions demonstrated heterogeneous distributions, with highest activity in dendrite-rich neuropil of the cortex. A laminar distribution of COX mRNA expression also was demonstrated with in situ hybridization. mRNA was detected in cell bodies and in apical dendrites. These results indicate region specific differences in the distribution of COX activity and in the corresponding mRNA for three of its subunits within the monkey brain. Such differences may be related to differences in the distribution of neuropil as compared with cell bodies among the brain regions studied, and may be relevant to selective vulnerability in Alzheimer's disease.
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Affiliation(s)
- K Chandrasekaran
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892
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Abstract
We investigated whether changes in expression of RNA polymerase III (pol III) or heterodisperse RNA polymerase II (pol II) transcripts hybridizing to Alu could be detected in Alzheimer's disease (AD). RNA samples obtained from AD and control brain tissues were examined by Northern analysis for Alu and 7SL RNA expression. All RNA samples contained a prominent band of approximately 300 nucleotides which corresponds to 7SL RNA, the Alu-homologous RNA component of the signal recognition particle. In addition, three small (i.e. less than 300 nucleotide) 7SL/Alu-hybridizing transcripts were detected. The two larger of the low molecular weight transcripts hybridized preferentially to the 7SL RNA probe, while the smallest transcript hybridized to the Alu probe. These transcripts and the heterodisperse RNA were variable in quantity and displayed a lack of correlation with AD.
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Growth Regulation, National Institute of Health, National Institute of Child Health and Human Development, Bethesda, MD 20892
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Foster DN, Galehouse D, Giordano T, Min B, Lamb IC, Porter DA, Intehar KJ, Bacon WL. Nucleotide sequence of the cDNA encoding the common alpha subunit of the chicken pituitary glycoprotein hormones. J Mol Endocrinol 1992; 8:21-7. [PMID: 1543531 DOI: 10.1677/jme.0.0080021] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [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
Recombinant cDNA clones that encode the alpha subunit of the chicken pituitary glycoprotein hormones were isolated from a pituitary library. The longer of the two cDNA clones that were sequenced was 754 bp in length. It contained 81 nucleotides of the 5'-untranslated region (UTR), an open-reading frame of 360 bp that encoded a 24 amino acid leader polypeptide sequence as well as the 96 amino acid mature alpha subunit, and 268 nucleotides of the 3'-UTR, followed by a 45 bp poly(A) tract. There was 69-79% homology between the nucleotide sequence of the coding region for the chicken and mammalian alpha-subunit cDNAs. Northern blot analysis revealed that the steady-state levels of an approximately 800 bp alpha-subunit specific transcript increased quantitatively when dispersed chicken pituitary glands were treated in culture with chicken gonadotrophin-releasing hormone-I.
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Affiliation(s)
- D N Foster
- Department of Poultry Science, Ohio State University, Wooster 44691
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Giordano T, Howard TH, Coleman J, Sakamoto K, Howard BH. Isolation of a population of transiently transfected quiescent and senescent cells by magnetic affinity cell sorting. Exp Cell Res 1991; 192:193-7. [PMID: 1845795 DOI: 10.1016/0014-4827(91)90175-t] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Rous sarcoma virus (RSV) and cytomegalovirus (CMV) promoters were tested for activity in proliferating and nonproliferating (quiescent or senescent) human embryo fibroblasts. These promoters were cloned upstream of the coding sequence for the Tac subunit of the interleukin 2 receptor, and activity was calculated from the fraction of Tac antigen positive cells detected in a coupled transient transfection/magnetic affinity cell sorting assay. Differences in promoter activities are substantial in quiescent cells: the efficiency of the RSV promoter is no greater than background whereas the CMV promoter is equally active in serum concentrations ranging from 0.5 to 20%. While both promoters are functional in growing cells (WI-38 and HeLa), the CMV promoter exhibits twofold greater activity. Surprisingly, in senescent cells both promoters exhibit the same degree of activity.
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892
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Lemma F, Cuffari B, Rizzo AG, Giordano T, Trovato M, D'Anna F. [Minimal breast carcinoma (the authors' experience)]. Chir Ital 1990; 42:95-9. [PMID: 1966244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The authors relate their experience about twenty-one cases of impalpable lesions of the breast come to their observation during the years 84-88. After expanding therapeutical tactics carried out by them, the promoters infer asserting that a wide diffusion of screening programmes allowed a more verifications of the minute lesions of the breast, addressing the surgeon towards operations more and more conservatives.
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Affiliation(s)
- F Lemma
- I Clinica Chirurgica e Terapia Chirurgica, Università degli Studi di Messina
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Lemma F, Di Pietro N, Cuffari B, Lazzara S, Navarra G, Rizzo AG, Giordano T, Rifatto P, Terrazzini A. [Role of screening as an index of predictability in the early diagnosis of nonpalpable lesions of the breast]. G Chir 1990; 11:279-84. [PMID: 2248868] [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: 12/31/2022]
Abstract
The Authors, on the basis of their personal experience and supported by more significative data from the international literature, underline the validity of the screening in detecting non palpable lesions of the breast. They conclude by asserting that mortality for breast cancer may be further reduced if more and more women undergo screening programmes.
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Affiliation(s)
- F Lemma
- I Clinica Chirurgica Generale e Terapia Chirurgica, Università degli Studi di Messina
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Abstract
A cDNA library was constructed from poly(A)+ RNA derived from late passage WI-38 cells and differentially screened with cDNA probes from early and late passage cells. From a number of clones which exhibited differences in intensity of hybridization to the early or late passage probes, one was chosen for further analysis because of its large increase in hybridization to the late passage probe. This clone accounted for approximately 1% of the recombinants in the library. The partial cDNA clone shows complete sequence homology to elongation factor I alpha (EF-I alpha). Northern analysis of poly(A)+ RNA from cells at various population doublings suggested that a 2.2-kb transcript, homologous to EF-I alpha accumulates as cells near the end of their replicative life span (phase III). When early and late passage cells were reexposed to serum after serum starvation, this transcript decreased in abundance. Additionally, a lower molecular weight transcript (1.6 kb) was detected 18 h following serum stimulation in early passage cells and 9 h after stimulation in late passage cells.
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Biology, National Institutes of Health, Bethesda, Maryland 20892
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Biology, National Institutes of Health, Bethesda, MD 20892
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Giordano T, Kleinsek D, Foster DN. Increase in abundance of a transcript hybridizing to elongation factor I alpha during cellular senescence and quiescence. Exp Gerontol 1989; 24:501-13. [PMID: 2483690 DOI: 10.1016/0531-5565(89)90056-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We have isolated a senescence-specific clone (pSEN) from a cDNA library constructed from late passage WI-38 human diploid fibroblast that accounts for approximately 1% of the recombinants. Nucleotide sequence analysis of the partial cDNA clone has led to the identification of pSEN as elongation factor I alpha. Northern analysis of poly(A)+ RNA from various intermediate population doubling levels shows that a 2.2 kb transcript hybridizes to pSEN but is expressed prior to PDL-40 at very low levels. This transcript begins to accumulate at PDL-40 and is induced approximately 50-fold just prior to senescence. Furthermore, this transcript was shown to be specific to Go of the cell cycle whereas a second, lower molecular weight transcript (1.6 kb) was observed during S phase (Giordano and Foster, unpublished data). The 2.2 kb transcript is also detected in neonatal foreskin cells but very little increase in abundance is observed between early and late passage cells. Sucrose gradient fractionation of RNA from late passage WI-38 cells suggests that the lower molecular weight transcript is associated with the polysome fraction while the 2.2 kb transcript sediments with the nonpolysomal fraction. Thus, the possibility exists that the 1.6 kb transcript is derived from the 2.2 kb transcript.
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Affiliation(s)
- T Giordano
- Laboratory of Molecular Biology, National Institutes of Health, Bethesda, Maryland 20892
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Melica A, Aversa C, Costanzo R, De Mitri A, Frassanito M, Gerardi R, Giordano T, Grima P, Mandurino L, Miglietta C. [Bacteriological study of 922 chronic hospitalized bronchopneumopathy patients]. G Clin Med 1983; 64:362-71. [PMID: 6662308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Giacca S, Ariano R, Alpa E, Giordano T. [Results of a mass screening for early diagnosis of diabetes mellitus in a small town (Airole) of the province of Imperia]. Arch Sci Med (Torino) 1981; 138:471-82. [PMID: 7340732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A brief review of the methods currently employed in epidemiological investigations for the early diagnosis of diabetes is followed by a description of the inland Liguria town, Airole. 228 of the 504 inhabitants came for the examination (45.2%). Known diabetics constituted 5.7% of the population examined, and diabetic-type curves were observed in 7.45% of persons negative for the presence of diabetes. Borderline curves were seen in 9.2%. A comparison is made with other epidemiological investigations of the same kind carried out in Italy, and stress is laid on their medical and social importance.
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