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Rojas-Ponce G, Sauvageau D, Zemp R, Barkema HW, Evoy S. Use of uncoated magnetic beads to capture Mycobacterium smegmatis and Mycobacterium avium paratuberculosis prior detection by mycobacteriophage D29 and real-time-PCR. METHODS IN MICROBIOLOGY 2022; 197:106490. [PMID: 35595085 DOI: 10.1016/j.mimet.2022.106490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/11/2022] [Accepted: 05/11/2022] [Indexed: 11/25/2022]
Abstract
Uncoated tosyl-activated magnetic beads were evaluated to capture Mycobacterium smegmatis and Mycobacterium avium subspecies paratuberculosis (MAP) from spiked feces, milk, and urine. Centrifugation and uncoated magnetic beads recovered more than 99% and 93%, respectively, of 1.68 × 107 CFU/mL, 1.68 × 106 CFU/mL and 1.68 × 105 CFU/mL M. smegmatis cells resuspended in phosphate buffer saline. The use of magnetic beads was more efficient to concentrate cells from 1.68 × 104 CFU/mL of M. smegmatis than centrifugation. Likewise, the F57-qPCR detection of MAP cells was different whether they were recovered by beads or centrifugation; cycle threshold (Ct) was lower (p < 0.05) for the detection of MAP cells recovered by beads than centrifugation, indicative of greater recovery. Magnetic separation of MAP cells from milk, urine, and feces specimens was demonstrated by detection of F57 and IS900 sequences. Beads captured no less than 109 CFU/mL from feces and no less than 104 CFU/mL from milk and urine suspensions. In another detection strategy, M. smegmatis coupled to magnetic beads were infected by mycobacteriophage D29. Plaque forming units were observed after 24 h of incubation from urine samples containing 2 × 105 and 2 × 103 CFU/mL M. smegmatis. The results of this study provide a promising tool for diagnosis of tuberculosis and Johne's disease.
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Affiliation(s)
- Gabriel Rojas-Ponce
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada.
| | - Dominic Sauvageau
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, Canada
| | - Roger Zemp
- Department of Electrical and Computer Engineering, Biomedical Engineering, University of Alberta, Edmonton, AB, Canada
| | - Herman W Barkema
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Stephane Evoy
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada
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2
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Alkaissi HR, Banerji MA. Primary Hypoparathyroidism Presenting as Idiopathic Intracranial Hypertension in a Patient With Barakat Syndrome. Cureus 2022; 14:e24521. [PMID: 35651450 PMCID: PMC9138397 DOI: 10.7759/cureus.24521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2022] [Indexed: 11/05/2022] Open
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Shariq OA, Strajina V, Lyden ML, McKenzie TJ, Wermers RA, Thompson GB, Dy BM. Parathyroidectomy improves hypercalciuria in patients with primary hyperparathyroidism. Surgery 2020; 168:594-600. [DOI: 10.1016/j.surg.2020.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/30/2020] [Accepted: 07/16/2020] [Indexed: 01/21/2023]
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Elfert KA, Geller DS, Nelson-Williams C, Lifton RP, Al-Malki H, Nauman A. Late-Onset Bartter Syndrome Type II Due to a Homozygous Mutation in KCNJ1 Gene: A Case Report and Literature Review. AMERICAN JOURNAL OF CASE REPORTS 2020; 21:e924527. [PMID: 32997650 PMCID: PMC7534490 DOI: 10.12659/ajcr.924527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Bartter syndrome is a rare genetic disease characterized by hypokalemia, metabolic alkalosis, and hyperreninemic hyperaldosteronism. Five different subtypes have been described based on the genetic defect identified. Bartter syndrome type II is caused by homozygous or compound heterozygous loss-of-function mutations in the KCNJ1 gene encoding ROMK. This subtype is typically described as a severe antenatal form of the disease, often presenting with polyhydramnios before childbirth. CASE REPORT Here, we describe the case of a 26-year-old man who presented with generalized body weakness and hypokalemia and was ultimately diagnosed with Bartter syndrome type II based on his clinical features coupled with the identification of a homozygous missense mutation in KCNJ1. CONCLUSIONS To the best of our knowledge, this is the fifth case of late-onset Bartter syndrome type II. Interestingly, the mutation identified in our patient has been previously described in patients with antenatal Bartter's Syndrome. The late presentation in our patient suggests a surprising degree of phenotypic variability, even in patients carrying the identical disease-causing mutation.
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Affiliation(s)
- Khaled A Elfert
- Department of Internal Medicine, Hamad Medical Corporation, Doha, Qatar
| | - David S Geller
- Department of Nephrology, Yale University School of Medicine, New Haven, CT, USA.,Department of Nephrology, West Haven VA Hospital, West Haven, CT, USA
| | | | - Richard P Lifton
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Hassan Al-Malki
- Department of Nephrology, Hamad Medical Corporation, Doha, Qatar
| | - Awais Nauman
- Department of Nephrology, Hamad Medical Corporation, Doha, Qatar
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Mobarak S, Tarazi M, Spiers H, Santhakumar A, Forgacs B. Case Report: Familial Hypocalciuric Hypercalcaemia and Hashimoto's Thyroiditis. Front Surg 2020; 7:30. [PMID: 32613005 PMCID: PMC7308482 DOI: 10.3389/fsurg.2020.00030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/07/2020] [Indexed: 11/28/2022] Open
Abstract
Introduction: Hypercalcaemia can be caused by many disorders. Primary hyperparathyroidism is the leading cause with parathyroidectomy being the definitive management. Familial hypocalciuric hypercalcaemia is a rarer cause in which resection of the parathyroid tissue does not result in normalized serum calcium. Case presentation: We report the unusual case of a 53-year-old lady who presented with hypercalcaemia and elevated parathyroid hormone with a presumed diagnosis of primary hyperparathyroidism. She remained hypercalcaemic after parathyroidectomy and was later diagnosed with familial hypocalciuric hypercalcaemia. During the first operation, a lymph node was also removed, and the histopathology report suggested a metastasis of follicular variant papillary thyroid carcinoma (FVPTC). After multi-disciplinary team (MDT) discussion, the patient underwent a second exploration where total thyroidectomy and removal of the other parathyroid glands were performed. Hypercalcaemia completely resolved on surgical resection of the thyroid and parathyroid tissue, however histopathology revealed normal parathyroid glands and florid Hashimoto's thyroiditis. The initial diagnosis of FVPTC in the lymph node was revisited and the final histopathology report suggested an accessory thyroid nodule with florid Hashimoto's thyroiditis mimicking a lymph node. Conclusion: Our case demonstrates the diagnostic dilemma in hypercalcaemia that may lead a patient to undergo unnecessary invasive procedures; the misdiagnosis of FVPTC after the first operation resulted in a second more extensive procedure. Patients with no clear surgical target and urine CCCR in the gray/non-diagnostic area should be routinely offered genetic testing despite negative family history.
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Affiliation(s)
- Shahd Mobarak
- Department of Transplant and Endocrine Surgery, Manchester Royal Infirmary, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Munir Tarazi
- Department of Transplant and Endocrine Surgery, Manchester Royal Infirmary, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Harry Spiers
- Department of Transplant and Endocrine Surgery, Manchester Royal Infirmary, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Anjali Santhakumar
- Department of Endocrinology, Macclesfield District General Hospital, East Cheshire NHS Trust, Macclesfield, United Kingdom
| | - Bence Forgacs
- Department of Transplant and Endocrine Surgery, Manchester Royal Infirmary, Manchester University NHS Foundation Trust, Manchester, United Kingdom
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Naples R, Shin JJ, Berber E, Jin J, Krishnamurthy VD, Siperstein AE. Recognition of primary hyperparathyroidism: Delayed time course from hypercalcemia to surgery. Surgery 2020; 167:358-364. [DOI: 10.1016/j.surg.2019.07.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 12/12/2022]
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Duenchay P, Chailapakul O, Siangproh W. A Transparency Sheet-Based Colorimetric Device for Simple Determination of Calcium Ions Using Induced Aggregation of Modified Gold Nanoparticles. Int J Mol Sci 2019; 20:ijms20122954. [PMID: 31212937 PMCID: PMC6627648 DOI: 10.3390/ijms20122954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/12/2019] [Accepted: 06/14/2019] [Indexed: 11/23/2022] Open
Abstract
A simple and novel transparency sheet-based colorimetric detection device using gold nanoparticles (AuNPs) modified by 4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate (AHMP) was fabricated and developed for the determination of calcium ions (Ca2+). The detection was based on a colorimetric reaction as a result of the aggregation of modified AuNPs induced by Ca2+ due to the ability to form strong electrostatic interactions between positively charged Ca2+ and negatively charged modified AuNPs. Probe solution changes color from red to blue in the presence of Ca2+ and can be observed by the naked eyes. To verify the complete self-assembly of the AHMP onto the AuNP surface, the modified AuNPs were characterized using ultraviolet–visible spectroscopy and zeta potential measurements. Under optimal conditions, a quantitative linearity was 10 to 100 ppm (R2 = 0.9877) with a detection limit of 3.05 ppm. The results obtained by the developed method were in good agreement with standard atomic absorption spectrometry (AAS) results and demonstrated that this method could reliably measure Ca2+. Overall, this novel alternative approach presents a low-cost, simple, sensitive, rapid, and promising device for the detection of Ca2+.
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Affiliation(s)
- Paweenar Duenchay
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand.
| | - Orawon Chailapakul
- Electrochemistry and Optical Spectroscopy Centre of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand.
| | - Weena Siangproh
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand.
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Kaderli RM, Riss P, Geroldinger A, Selberherr A, Scheuba C, Niederle B. Factors influencing pre-operative urinary calcium excretion in primary hyperparathyroidism. Clin Endocrinol (Oxf) 2017; 87:97-102. [PMID: 28383779 DOI: 10.1111/cen.13348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/09/2017] [Accepted: 04/03/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Normal or elevated 24-hour urinary calcium (Ca) excretion is a diagnostic marker in primary hyperparathyroidism (PHPT). It is used to distinguish familial hypocalciuric hypercalcaemia (FHH) from PHPT by calculating the Ca/creatinine clearance ratio (CCCR). The variance of CCCR in patients with PHPT is considerable. The aim of this study was to analyse the parameters affecting CCCR in patients with PHPT. DESIGN The data were collected prospectively. Patients with sporadic PHPT undergoing successful surgery were included in a retrospective analysis. PATIENTS The analysis covered 381 patients with pre-operative workup 2 days before removal of a solitary parathyroid adenoma. MEASUREMENTS The impact of serum Ca and 25-hydroxyvitamin D3 (25-OH D3) on CCCR. RESULTS The coefficient of determination (R2 ) in the multivariable model for CCCR consisting of age, Ca, 25-OH D3, 1,25-dihydroxyvitamin D3 (1,25-(OH)2 D3), testosterone (separately for males and females), intact parathyroid hormone (iPTH) and osteocalcin was 25.8%. The only significant parameters in the multivariable analysis were 1,25-(OH)2 D3 and osteocalcin with a drop in R2 of 15.4% (P<.001) and 2.4% (P=.006), respectively. Bone mineral densities at the lumbar spine, distal radius and left femoral neck were not associated with CCCR (r=-.08, r=-.10 and r=-0.09). CONCLUSIONS In multivariable analysis, 1,25-(OH)2 D3 and osteocalcin were the only factors correlating with CCCR. Vitamin D3 replacement may therefore impair the diagnostic value of CCCR and increase the importance of close monitoring of urinary Ca excretion during treatment.
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Affiliation(s)
- Reto M Kaderli
- Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Wien, Austria
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Philipp Riss
- Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Wien, Austria
| | - Angelika Geroldinger
- Section for Clinical Biometrics, Centre for Medical Statistics, Informatics and Intelligent Systems (CeMSIIS), Medical University of Vienna, Wien, Austria
| | - Andreas Selberherr
- Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Wien, Austria
| | - Christian Scheuba
- Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Wien, Austria
| | - Bruno Niederle
- Section of Endocrine Surgery, Division of General Surgery, Department of Surgery, Medical University of Vienna, Wien, Austria
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Cakir B, Polat SB, Kilic M, Ozdemir D, Aydin C, Süngü N, Ersoy R. Evaluation of preoperative ultrasonographic and biochemical features of patients with aggressive parathyroid disease: is there a reliable predictive marker? ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2016; 60:537-544. [PMID: 27901181 PMCID: PMC10522169 DOI: 10.1590/2359-3997000000224] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/19/2016] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Parathyroid cancer (PC) represents < 1% of cases of PHPT. Tumors demonstrating atypical histopathologic features and don't fulfill criteria for carcinoma are classified as atypical adenomas (APA). The purpose of this study was to determine a biochemical or ultrasonographic feature that can predict aggressive disease requiring more extensive surgery and closer follow-up. SUBJECTS AND METHODS Twenty eight patients operated for PHPT and diagnosed with atypical adenoma (23 patients) or carcinoma (5 patients) were enrolled in this study. The control group consisted of 102 patients operated between the same dates and diagnosed with classical PA. Classical adenomas, atypical adenomas, and carcinomas were compared according to their biochemical and ultrasonographic parameters. RESULTS Serum Ca levels were significantly higher in the PC group compared with the APA and classical PA groups. Serum median PTH, Serum ALP and UCa was significantly higher in the APA and carcinoma groups compared to the classical PA group. ROC analysis was made to determine the best cut off values for predicting aggressive disease were 12.45 mg/dL, 265.05 pg/mL, 154.5 IU/l, 348.5 mg/day and 21.5 mm for Ca, PTH, ALP, UCa and the adenoma diameter, respectively. Multivariate analysis showed that serum Ca, ALP and isoechoic/cystic appearance were independent predictors for aggressive disease. CONCLUSION Preoperatively high PTH, ALP, and UCa levels and large lesions with isoechoic or cystic appearances may be predictive of atypical adenoma or carcinoma in patients being evaluated for PHPT. In such cases, surgeons may prefer en bloc parathyroidectomy to minimally invasive surgery.
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Affiliation(s)
- Bekir Cakir
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Endocrinology and Metabolism Department, Ankara, Turkey
| | - Sefika Burcak Polat
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Endocrinology and Metabolism Department, Ankara, Turkey
| | - Mehmet Kilic
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, General Surgery Department, Ankara, Turkey
| | - Didem Ozdemir
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Endocrinology and Metabolism Department, Ankara, Turkey
| | - Cevdet Aydin
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Endocrinology and Metabolism Department, Ankara, Turkey
| | - Nuran Süngü
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Pathology Department, Ankara, Turkey
| | - Reyhan Ersoy
- Yildirim Beyazit UniversityAtaturk Education and Research HospitalAnkaraTurkeyYildirim Beyazit University, Ataturk Education and Research Hospital, Endocrinology and Metabolism Department, Ankara, Turkey
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Doi SAR. Re: 24-hour urinary calcium in primary hyperparathyroidism; Black et al. Clin Med Res 2014; 12:5. [PMID: 25352608 PMCID: PMC4453301 DOI: 10.3121/cmr.2014.1240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Suhail A R Doi
- School of Population Health, University of Queensland, Brisbane, Australia,
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Affiliation(s)
- Fevzi Nuri Aydin
- Department of Biochemistry, Sirnak Military Hospital, Sirnak, Turkey, E-mail:
| | - Ibrahim Aydin
- Department of Biochemistry, Sarikamis Military Hospital, Sarikamis, Kars, Turkey
| | - Mehmet Agilli
- Department of Biochemistry, Agri Military Hospital, Agri, Turkey
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