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Arunachalam A, Rengan R, Umapathy D, Arockiam AJV. Impact of Biphenyl Benzhydrazone-Incorporated Arene Ru(II) Complexes on Cytotoxicity and the Cancer Cell Death Mechanism. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abirami Arunachalam
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Ramesh Rengan
- Centre for Organometallic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli 620024, India
| | - Devan Umapathy
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620024, India
| | - Antony Joseph Velanganni Arockiam
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620024, India
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Umapathy D, Karthikeyan MC, Ponnuchamy K, Kannan MK, Ganeshan M, Arockiam AJV. The absence of cellular glucose triggers oncogene AEG-1 that instigates VEGFC in HCC: A possible genetic root cause of angiogenesis. Gene X 2022; 826:146446. [PMID: 35337853 DOI: 10.1016/j.gene.2022.146446] [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: 09/20/2021] [Revised: 03/02/2022] [Accepted: 03/18/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Astrocyte Elevated Gene-1 (AEG-1) is the master and multi-regulator of the various transcriptional factor primarily regulating chemoresistance, angiogenesis, metastasis, and invasion under the pathological condition, including liver cancer. This study was focused on investigating the process of tumor angiogenesis in liver carcinoma by studying the role of AEG-1 under GD/2DG conditions. METHOD AND RESULTS The PCR and western blot analysis revealed that glucose depletion (GD) induces the overexpression of AEG-1. Further, it leads to the constant expression of VEGFC through the activation of HIF-1α/CCR7 via the stimulations of PI3K/Akt signaling pathways. GLUT2 is the major transporter of a glucose molecule that is highly participating under GD through the expression of AEG-1 and constantly expresses glucokinase (GCK). The obtained data suggest that AEG-1 act as an angiogenesis and glycolysis regulator by modulating the expression of GCK through HIF-1α and GLUT2. 2-deoxy-D-glucose (2DG) is a glycolysis inhibitor that induces impaired glycolysis and cellular apoptosis by cellular oxidative stress. The administration of 2DG has led to the chemoresistance of AEG-1. CONCLUSION The total findings of the study judged that disruption of cellular energy metabolism induced by the absence of glucose or the presence of mutant glucose moiety (2DG) promotes the overexpression of AEG-1. The GD/2DG activates the VEGFC by inducing the HIF-1α and CCR7. Moreover, AEG-1 induces the expression of OPN, which regulates metastasis, angiogenesis, and actively participates in protective autophagy by promoting LC3 a/b.
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Affiliation(s)
- Devan Umapathy
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India
| | - Mano Chitra Karthikeyan
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India
| | - Kumar Ponnuchamy
- Department of Animal Health and Management, Food Chemistry and Molecular Cancer Biology Laboratory, Alagappa University, Karaikudi 630 003, Tamil Nadu, India
| | - Mahesh Kumar Kannan
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India
| | - Mathan Ganeshan
- Cancer Biology Laboratory, Department of Biomedical Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India
| | - Antony Joseph Velanganni Arockiam
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
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Prabaharan R, Rengan R, Umapathy D, Arockiam AJV, Małecki JG. Assessment of antiproliferative activity of new half‐sandwich arene Ru (II) furylbenzhydrazone complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Ramya Prabaharan
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Ramesh Rengan
- Centre for Organometallic Chemistry, School of Chemistry Bharathidasan University Tiruchirappalli India
| | - Devan Umapathy
- Molecular Oncology Laboratory, Department of Biochemistry, School of Life Sciences Bharathidasan University Tiruchirappalli India
| | | | - Jan Grzegorz Małecki
- Department of Crystallography Institute of Chemistry, University of Silesia Katowice Poland
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Umapathy D, Karthikeyan MC, Ponnuchamy K, Arockiam AJV. Transcriptional expression of miRNAs under glucose depletion/2-deoxy-d-glucose in HCC: A possible genetic footprints of angiogenesis and its hallmarks. Gene Reports 2021. [DOI: 10.1016/j.genrep.2021.101277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Manogaran P, Umapathy D, Karthikeyan M, Venkatachalam K, Singaravelu A. Dietary Phytochemicals as a Potential Source for Targeting Cancer Stem Cells. Cancer Invest 2021; 39:349-368. [PMID: 33688788 DOI: 10.1080/07357907.2021.1894569] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The tumor microenvironment is composed of various types of cells that lead to tumor heterogeneity. In the middle of these populations, cancer stem cells play a vital role in the initiation and progression of cancer cells and are capable of self-renewal and differentiation processes. These cancer stem cells are resistant to conventional therapy such as chemotherapy and radiotherapy. To eradicate the cancer stem cells in the tumor environment, various natural product has been found in recent years. In this review, we have selected some of the natural products based on anticancer potential including targeting cancer cells and cancer stem cells. Further, this review explains the molecular mechanism of action of these natural products in various cancer stem cells. Therefore, targeting a multi-drug resistant cancer stem cell by natural products is a novel method to reduce drug resistance and adverse effect during conventional therapy.
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Affiliation(s)
- Prasath Manogaran
- Department of Biotechnology, Bharathiar University, Coimbatore, Tamilnadu, India
| | - Devan Umapathy
- Department of Biochemistry, Bharathidasan University, Tiruchirappalli, Tamilnadu, India
| | | | - Karthikkumar Venkatachalam
- Department of Pharmacology & Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Anbu Singaravelu
- Department of PG and Research Department of Biochemistry, Sacred Heart College (Autonomous), Tirupattur, Tamilnadu, India
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Patel P, Umapathy D, Manivannan S, Nadar VM, Venkatesan R, Joseph Arokiyam VA, Pappu S, Ponnuchamy K. A doxorubicin-platinum conjugate system: impacts on PI3K/AKT actuation and apoptosis in breast cancer cells. RSC Adv 2021; 11:4818-4828. [PMID: 35424411 PMCID: PMC8694461 DOI: 10.1039/d0ra06708c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/25/2020] [Indexed: 12/30/2022] Open
Abstract
In recent years, the development of a nano-conjugate system for drug delivery applications has gained attention among researchers. Keeping this in mind, in this study, we developed a doxorubicin-platinum conjugate system that targeted breast cancer cell lines. To achieve this, we developed platinum nanoparticles using polyvinylpyrrolidone (PVP). High resolution-transmission electron microscopy (HR-TEM) revealed the occurrence of octopod-shaped platinum nanoparticles. Subsequently, doxorubicin (DOX) was conjugated on the surface of the as-prepared platinum octopods via an in situ stirring method. The physicochemical characterization of the doxorubicin-platinum conjugate system revealed that the PVP of PtNPs interacts with the NH2 group of doxorubicin via electrostatic interaction/hydrogen bonding. Besides, the doxorubicin-platinum conjugate system exhibited a sustained drug release profile within the cancer cells. Furthermore, the evaluation of the in vitro anticancer efficacy of the doxorubicin-platinum conjugate system in breast cancer cells (MCF-7 and MDA-MB-231) unveiled the induction of apoptosis via intracellular ROS and DNA damage, rather than free DOX and PtNPs. Remarkably, we also perceived that the doxorubicin-platinum conjugate system was strong enough to down-regulate the PI3K/AKT signalling pathway. As a result, the tumour suppressor gene PTEN was activated, which led to the stimulation of a mitochondrion-based intrinsic apoptotic pathway and its downstream caspases, triggering cell death. Hence, our findings suggested that a biologically stable doxorubicin-platinum conjugate system could be an imperative therapeutic agent for anticancer therapy in the near future.
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Affiliation(s)
- Puja Patel
- Food Chemistry and Molecular Cancer Biology Lab, Department of Animal Health and Management, Alagappa University Karaikudi 630 003 India
| | - Devan Umapathy
- Molecular Oncology Lab, Department of Biochemistry, Bharathidasan University Tiruchirappalli 620 024 Tamil Nadu India
| | - Selvambigai Manivannan
- Department of Biomedical Science, Centre for Membrane Interactions and Dynamics (CMIAD), The University of Sheffield Western Bank Sheffield S10 2TN UK
| | - Vinita Manimaran Nadar
- Food Chemistry and Molecular Cancer Biology Lab, Department of Animal Health and Management, Alagappa University Karaikudi 630 003 India
| | - Rajiu Venkatesan
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University Hangzhou 310027 China
| | | | - Srinivasan Pappu
- Phage Therapy and Molecular Biology Lab, Department of Animal Health and Management, Alagappa University Karaikudi 630003 Tamil Nadu India
| | - Kumar Ponnuchamy
- Food Chemistry and Molecular Cancer Biology Lab, Department of Animal Health and Management, Alagappa University Karaikudi 630 003 India
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Manuel Xavier HF, Nadar VM, Patel P, Umapathy D, Velanganni Joseph A, Manivannan S, Santhiyagu P, Pandi B, Muthusamy G, Rathinam Y, Ponnuchamy K. Selective antibacterial and apoptosis-inducing effects of hybrid gold nanoparticles – A green approach. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nagapoosanam AL, Ganesan N, Umapathy D, Moorthy RK, Arockiam AJV. Knockdown of human telomerase reverse transcriptase induces apoptosis in cervical cancer cell line. Indian J Med Res 2020; 149:345-353. [PMID: 31249199 PMCID: PMC6607821 DOI: 10.4103/ijmr.ijmr_1676_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background & objectives: Human telomerase reverse transcriptase (hTERT) is the catalytic subunit of telomerase enzyme that maintains telomere ends by the addition of telomeric repeats to the ends of chromosomal DNA, and that may generate immortal cancer cells. Hence, the activity of telomerase is raised in cancer cells including cervical cancer. The present study aimed to validate the unique siRNA loaded chitosan coated poly-lactic-co-glycolic acid (PLGA) nanoparticle targeting hTERT mRNA to knock down the expression of hTERT in HeLa cells. Methods: The siRNA loaded chitosan coated polylactic-co-glycolic acid (PLGA) nanoparticles were synthesized by double emulsion solvent diffusion method. The characterization of nano-formulation was done to determine efficient siRNA delivery. MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay, reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blot were performed to evaluate silencing efficiency of nano-formulation. Results: Size, zeta potential and encapsulation efficiency of nanoparticles were 249.2 nm, 12.4 mV and 80.5 per cent, respectively. Sustained release of siRNA from prepared nanoparticle was studied for 72 h by ultraviolet method. Staining assays were performed to confirm senescence and apoptosis. Silencing of hTERT mRNA and protein expression were analyzed in HeLa cells by RT-PCR and Western blot. Interpretation & conclusions: The findings showed that biodegradable chitosan coated PLGA nanoparticles possessed an ability for efficient and successful siRNA delivery. The siRNA-loaded PLGA nanoparticles induced apoptosis in HeLa cells. Further studies need to be done with animal model.
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Affiliation(s)
- Anantha Lakshmi Nagapoosanam
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Nithya Ganesan
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Devan Umapathy
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Rajesh Kannan Moorthy
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
| | - Antony Joseph Velanganni Arockiam
- Department of Biochemistry, Molecular Oncology Laboratory, School of Life Sciences, Bharathidasan University, Tiruchirappalli, India
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Viswanathan V, Sivakumar S, Sekar V, Umapathy D, Kumpatla S. Clinical significance of urinary liver-type fatty acid binding protein at various stages of nephropathy. Indian J Nephrol 2015; 25:269-73. [PMID: 26628791 PMCID: PMC4588321 DOI: 10.4103/0971-4065.145097] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This cross-sectional study was to evaluate the levels of urinary liver-type fatty acid binding protein (u-LFABP pg/mg urine creatinine ratio) at different stages of diabetic nephropathy and to see its correlation with other clinical parameters in South Indian patients with type 2 diabetes mellitus (T2DM). A total of 65 (M: F; 42:23) T2DM subjects were divided into three groups, and were compared with 13 (M: F; 3:10) nondiabetic controls. The study groups were as follows: normoalbuminuric (n = 22), microalbuminuric (n = 22) and macroalbuminuric (n = 21). Estimated glomerular filtration rate (eGFR) was calculated using Cockcroft and Gault formula. u-LFABP levels in spot urine samples were measured with a solid phase enzyme linked immunosorbent assay. This study showed that u-LFABP levels were undetectable in healthy controls and was very low in the normoalbuminuric subjects. Elevated levels of u-LFABP are evident from the microalbuminuric stage indicating tubular damage. The levels of u-LFABP increased gradually with declining renal function. Geometric mean (95% confidence interval) for normoalbuminuria was 0.65 (0.47–0.97), microalbuminuria was 0.99 (0.55–1.97) and macroalbuminuria was 5.16 (1.8–14.5), (P = 0.005). In conclusion, u-LFABP levels were elevated in patients with reduced eGFR and showed a positive correlation with systolic blood pressure and protein to creatinine ratio in the total study subjects.
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Affiliation(s)
- V Viswanathan
- Department of Diabetology, M.V. Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Center (WHO Collaborating Center for Research Education and Training in Diabetes), Royapuram, Chennai, Tamil Nadu, India
| | - S Sivakumar
- Department of Biochemistry and Molecular Genetics, M.V. Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Center (WHO Collaborating Center for Research Education and Training in Diabetes), Royapuram, Chennai, Tamil Nadu, India
| | - V Sekar
- Department of Biochemistry and Molecular Genetics, M.V. Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Center (WHO Collaborating Center for Research Education and Training in Diabetes), Royapuram, Chennai, Tamil Nadu, India
| | - D Umapathy
- Department of Biochemistry and Molecular Genetics, M.V. Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Center (WHO Collaborating Center for Research Education and Training in Diabetes), Royapuram, Chennai, Tamil Nadu, India
| | - S Kumpatla
- Department of Biochemistry and Molecular Genetics, M.V. Hospital for Diabetes and Prof. M. Viswanathan Diabetes Research Center (WHO Collaborating Center for Research Education and Training in Diabetes), Royapuram, Chennai, Tamil Nadu, India
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Adams JDW, Umapathy D. Investigating microbial activities during a starch-amended co-composting process at mesophilic and thermophilic temperatures. Environ Technol 2011; 33:1817-1823. [PMID: 22439569 DOI: 10.1080/09593330.2011.557399] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aim of this study was to assess the use of functional microbial ecological techniques in detailing processes during composting. Using starch as an amendment for a co-composting process, small-scale individual mesocosms were investigated at two temperatures, 30 degrees C and 60 degrees C, over a five-week period. In order to determine the more exact processes occurring during degradation, extracellular enzyme analysis (EEA) and community-level physiological profiling (CLPP) were used. The EEA demonstrated that, although assay temperature effects were present, no significant difference between the two in situ composting temperatures was observed for the two enzyme substrates, alpha- and beta-glucosidase, used. The CLPP profiling was only performed on the 30 degrees C compost samples. These analyses indicated a dynamic, but broadly predictable, environment, suggesting that the use of this approach may be further applicable to these types of study. By investigating both total dry and organic weights, no difference in organic matter degradation between the two temperatures was observed. These results showed that either starch degradation acted independently of temperature or compensatory effects occurred. The former hypothesis was supported by a second experiment investigating starch degradation at both temperatures with appropriate negative controls. Trying to reconcile the EEA results with the changes in total matter was difficult without making speculative assumptions. The study highlights the need to further develop and evaluate these microbial ecological techniques to address such problems.
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Affiliation(s)
- J D W Adams
- Environmental Technologies Centre for Industrial Collaboration and Department of Geography, University of Hull, Hull, HU6 7RX, UK.
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Abstract
This report describes the case history of two male siblings with sensorineural hearing loss and an enlarged vestibular aqueduct (EVA). Sibling 1 presented with a history of intermittent self-limiting ataxia and hearing loss at the age of 25 months and sibling 2 presented with a similar history at the age of 18 months. MRI showed an enlarged endolymphatic duct and sac bilaterally in both children. Perchlorate discharge tests were positive in both infants leading to a diagnosis of Pendred syndrome. A number of conditions associated with EVA are discussed with a view to devising management strategies.
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Fonseca S, Forsyth H, Grigor J, Lowe J, MacKinnon M, Price E, Rose S, Scanlon P, Umapathy D. Identification of permanent hearing loss in children: are the targets for outcome measures attainable? Br J Audiol 1999; 33:135-43. [PMID: 10439140 DOI: 10.3109/03005369909090093] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A collaborative nine-centre study was designed to follow the routes to identification of all children up to the age of seven years newly diagnosed with permanent hearing impairment (> or = 50 dB HL) during the period 1993-1994. Ages of identification were compared with the standards set by the National Deaf Children's Society (NDCS), ascertaining whether these targets could be achieved with current service provision. Of the 126 children identified, 104 had congenital sensorineural hearing loss: 19% were identified by the age of six months and 39% by their first year. These results fall short of the NDCS targets of 40% and 80%, respectively, and point to the need for modifications of current practice, such as the introduction of universal neonatal screening.
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Umapathy D, Cormie PJ. Headaches, opiates and kyphoscoliosis--a dangerous mixture. Scott Med J 1987; 32:80-1. [PMID: 3629223 DOI: 10.1177/003693308703200308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Acute respiratory failure is a recognised complication of kyphoscoliosis, but such individuals exhibit a wide range of cardiorespiratory dysfunction ranging from clinically insignificant disease to severe respiratory failure and eventual death. We report a 49 year old lady with adolescent kyphoscoliosis who presented to her general practitioner with nocturnal headaches of such severity that opiates were given pending transfer to hospital over a distance of 50 miles. This induced acute respiratory failure for which assisted ventilation was required.
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