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List of works by Mogens Kilian

A comparative genetic study of serologically distinct Haemophilus influenzae type 1 immunoglobulin A1 proteases

scientific article published on May 1992

A comprehensive genetic study of streptococcal immunoglobulin A1 proteases: evidence for recombination within and between species

scientific article published in January 1998

A hypothetical model for the development of invasive infection due to IgA1 protease-producing bacteria

article

A novel high-resolution single locus sequence typing scheme for mixed populations of Propionibacterium acnes in vivo.

scientific article

A rapid method for the detection and quantitation of IgA protease activity by macrobore gel-permeation chromatography

scientific article published on 01 July 1984

A rapid method for the differentiation of Haemophilus strains. The porphyrin test;

scientific article published on December 1, 1974

A sensitive enzyme-linked immunosorbent assay for IgA protease activity

scientific article published on 01 October 1983

A unique variant of streptococcal group O-antigen (C-polysaccharide) that lacks phosphocholine

scientific article published in May 2003

Ability to bind salivary alpha-amylase discriminates certain viridans group streptococcal species

scientific article published on November 1990

Acne is not associated with yet-uncultured bacteria

scientific article

Actinobacillus minor sp. nov., Actinobacillus porcinus sp. nov., and Actinobacillus indolicus sp. nov., three new V factor-dependent species from the respiratory tract of pigs.

scientific article published on October 1996

Actinomyces naeslundii in initial dental biofilm formation

scientific article

Aerococcus urinae: polyphasic characterization of the species

scientific article published in July 2005

Amino acid sequence requirements in the hinge of human immunoglobulin A1 (IgA1) for cleavage by streptococcal IgA1 proteases

scientific article published on March 2003

Amino acid sequence requirements in the human IgA1 hinge for cleavage by streptococcal IgA1 proteases

scientific article published in August 2002

Analysis of O-glycan heterogeneity in IgA1 myeloma proteins by Fourier transform ion cyclotron resonance mass spectrometry: implications for IgA nephropathy.

scientific article published on 22 August 2007

Anti-inflammatory activity of human IgA antibodies and their Fab alpha fragments: inhibition of IgG-mediated complement activation

scientific article

Antibiotic treatment and the diagnosis of Streptococcus pneumoniae in lower respiratory tract infections in adults

scientific article

Antibiotics inhibit tumor and disease activity in cutaneous T-cell lymphoma

scientific article published on 22 July 2019

Antigenic and genetic heterogeneity among Haemophilus influenzae and Neisseria IgA1 proteases.

scientific article published on January 1995

Antigenic relationships among immunoglobulin A1 proteases from Haemophilus, Neisseria, and Streptococcus species.

scientific article

Antigenic variation of immunoglobulin A1 proteases among sequential isolates of Haemophilus influenzae from healthy children and patients with chronic obstructive pulmonary disease

scientific article published on November 1993

Antisperm antibodies (ASAs) in infertile males: subclass distribution of IgA antibodies and the effect of an IgA1 protease on sperm-bound antibodies

scientific article published in March 1994

Antisperm antibodies in infertile women: subclass distribution of immunoglobulin (Ig) A antibodies and removal of IgA sperm-bound antibodies with a specific IgA1 protease

article

Application of stereological principles for quantification of bacteria in intact dental biofilms

scientific article

Assigning strains to bacterial species via the internet

scientific article

Bacteremia caused by a beta-lactamase producing Haemophilus parainfluenzae strain of a new biotype. A case report

scientific article published on 01 June 1984

Bacterial immunoglobulin a proteases monitored by continuous Spectrophotometry

scientific article published on 01 September 1985

Bacterial toxins fuel disease progression in cutaneous T-cell lymphoma

scientific article published on 14 August 2013

Bacterium-induced cleavage of IgA in nasopharyngeal secretions from atopic children

scientific article published on 01 February 1984

Biochemical characteristics of 130 recent isolates from Haemophilus influenzae meningitis

scientific article published on March 1979

Biological significance of IgA1 proteases in bacterial colonization and pathogenesis: critical evaluation of experimental evidence

scientific article published on May 1996

CRISPR/cas loci of type II Propionibacterium acnes confer immunity against acquisition of mobile elements present in type I P. acnes

scientific article (publication date: 2012)

Capsular Polysaccharide Expression in Commensal Streptococcus Species: Genetic and Antigenic Similarities to Streptococcus pneumoniae

scientific article

Capsular gene typing of Streptococcus agalactiae compared to serotyping by latex agglutination

scientific article published on 28 November 2012

Cariogenic streptococci

scientific article published in May 1970

Chelate root filling cements: biological properties

scientific article published on 01 January 1993

Ciprofloxacin susceptibility of Pseudomonas aeruginosa isolates from keratitis

scientific article published on October 2003

Cleavage of a recombinant human immunoglobulin A2 (IgA2)-IgA1 hybrid antibody by certain bacterial IgA1 proteases

scientific article

Clonal analysis of Streptococcus agalactiae isolated from infants with neonatal sepsis or meningitis and their mothers and from healthy pregnant women.

scientific article

Clonal analysis of the Actinobacillus pleuropneumoniae population in a geographically restricted area by multilocus enzyme electrophoresis

scientific article published on March 1, 1992

Clonal diversity of the Streptococcus mitis biovar 1 population in the human oral cavity and pharynx

scientific article published on 01 February 1995

Clonal relationship of recent invasive Haemophilus influenzae serotype f isolates from Denmark and the United States

scientific article published in November 2004

Clonality and anatomic distribution on the skin of antibiotic resistant and sensitive Propionibacterium acnes

scientific article published in September 2014

Cloning and sequencing of the immunoglobulin A1 protease gene (iga) of Haemophilus influenzae serotype b.

scientific article published on October 1989

Comparative analysis of immunoglobulin A1 protease activity among bacteria representing different genera, species, and strains

scientific article published on November 1997

Comparative characterization of the iga gene encoding IgA1 protease in Neisseria meningitidis, Neisseria gonorrhoeae and Haemophilus influenzae

scientific article published in February 1995

Comparative genomics and transcriptomics of Propionibacterium acnes

scientific article (publication date: 2011)

Comparison of the initial streptococcal microflora on dental enamel in caries-active and in caries-inactive individuals.

scientific article

Competence without a competence pheromone in a natural isolate of Streptococcus infantis

scientific article

Confirmation of the species Prevotella intermedia and Prevotella nigrescens

scientific article published on July 1995

Correction: Evolution of Streptococcus pneumoniae and Its Close Commensal Relatives

scientific article published on 11 December 2009

Correction: Structure and dynamics of the pan-genome of Streptococcus pneumoniae and closely related species.

scientific article published on 20 October 2011

Degradation of Uniquely Glycosylated Secretory Immunoglobulin A in Tears from Patients withPseudomonas aeruginosaKeratitis

Degradation of immunoglobulins A2, A2, and G by suspected principal periodontal pathogens

scientific article

Delineation of Streptococcus dysgalactiae, its subspecies, and its clinical and phylogenetic relationship to Streptococcus pyogenes

scientific article

Delineation of the genus Actinobacillus by comparison of partial infB sequences

scientific article published in May 2004

Delineation of the species Haemophilus influenzae by phenotype, multilocus sequence phylogeny, and detection of marker genes

scientific article published on 5 December 2008

Differences in iron acquisition from human haemoglobin among strains of Actinobacillus actinomycetemcomitans

scientific article published in December 2002

Different bacteriocin activities of Streptococcus mutans reflect distinct phylogenetic lineages

scientific article published on 01 November 2002

Differentiation of Haemophilus aegyptius and Haemophilus influenzae

scientific article published in April 1982

Distinct antigenic and genetic properties of the immunoglobulin A1 protease produced by Haemophilus influenzae biogroup aegyptius associated with Brazilian purpuric fever in Brazil.

scientific article

Distribution of immunoglobulin isotypes including IgA subclasses in adult, juvenile, and rapidly progressive periodontitis

Diversity of Capnocytophaga species in children and description of Capnocytophaga leadbetteri sp. nov. and Capnocytophaga genospecies AHN8471.

scientific article

Diversity patterns of bacteriophages infecting Aggregatibacter and Haemophilus species across clades and niches

scientific article published on 14 June 2019

Dynamics of Streptococcus agalactiae colonization in women during and after pregnancy and in their infants

scientific article published on January 2004

Early-onset periodontitis in Morocco is associated with the highly leukotoxic clone of Actinobacillus actinomycetemcomitans.

scientific article

Ecology of viridans streptococci in the oral cavity and pharynx

scientific article published in June 1991

Effect of surgical and non-surgical periodontal treatment on periodontal status and subgingival microbiota

scientific article published on 01 September 1991

Effects of fluoride on the initial colonization of teeth in vivo

scientific article published on January 1979

Emergence and global dissemination of host-specific Streptococcus agalactiae clones

scientific article

Endotoxin from Haemophilus influenzae enhances IgE-mediated and non-immunological histamine release

scientific article published on 01 January 1990

Enzymatic sialylation of IgA1 O-glycans: implications for studies of IgA nephropathy

scientific article (publication date: 2014)

Enzymatic, serologic, and genetic polymorphism of Haemophilus influenzae IgA1 proteases

scientific article published on June 1, 1992

Epidemic population structure of Pseudomonas aeruginosa: evidence for a clone that is pathogenic to the eye and that has a distinct combination of virulence factors

scientific article

Erratum for Kilian and Tettelin, "Identification of Virulence-Associated Properties by Comparative Genome Analysis of Streptococcus pneumoniae, S. pseudopneumoniae, S. mitis, Three S. oralis Subspecies, and S. infantis"

scientific article published on 15 October 2019

Establishment of streptococci in the upper respiratory tract: longitudinal changes in the mouth and nasopharynx up to 2 years of age.

scientific article published in September 2002

European Commission COST/STD Initiative. Report of the expert panel VI. Concerted efforts in the field of mucosal immunology

scientific article published on May 1996

Evidence for absence in northern Europe of especially virulent clonal types of Actinobacillus actinomycetemcomitans.

scientific article published on February 1995

Evidence of recombination in Porphyromonas gingivalis and random distribution of putative virulence markers

scientific article published on July 2001

Evolution of Streptococcus pneumoniae and its close commensal relatives.

scientific article

Evolution of the paralogous hap and iga genes in Haemophilus influenzae: evidence for a conserved hap pseudogene associated with microcolony formation in the recently diverged Haemophilus aegyptius and H. influenzae biogroup aegyptius

scientific article published in December 2002

Exclusive occurrence of an extracellular protease capable of cleaving the hinge region of human immunoglobulin A1 in strains of Ureaplasma urealyticum

scientific article published on 01 October 1984

Genetic relationships among the oral streptococci

scientific article

HadA is an atypical new multifunctional trimeric coiled-coil adhesin of Haemophilus influenzae biogroup aegyptius, which promotes entry into host cells

scientific article published on 12 March 2009

Haemagglutination activity of plaque-forming bacteria

scientific article published on January 1977

Haemophili and related bacteria in the human oral cavity

scientific article published on 01 December 1975

Haemophili in developing dental plaque

scientific article published in January 1976

Haemophilus aphrophilus endocarditis

scientific article published on 01 January 1974

Haemophilus from the lower respiratory tract of patients with cystic fibrosis.

scientific article published on January 1976

Haemophilus haemolyticus: a human respiratory tract commensal to be distinguished from Haemophilus influenzae

scientific article published on 27 November 2006

Haemophilus influenzae potentiates basophil histamine release possibly by its endotoxins

scientific article published on 01 April 1990

Heterogeneity of O-glycosylation in the hinge region of human IgA1.

scientific article

High rate of nasopharyngeal carriage of potential pathogens among children in Greenland: results of a clinical survey of middle-ear disease.

scientific article

Highly toxic clone of Actinobacillus actinomycetemcomitans in geographically widespread cases of juvenile periodontitis in adolescents of African origin

scientific article published on June 1996

Horizontal transfer of the immunoglobulin A1 protease gene (iga) from Streptococcus to Gemella haemolysans

scientific article published on July 2006

Host-derived pentapeptide affecting adhesion, proliferation, and local pH in biofilm communities composed of Streptococcus and Actinomyces species

scientific article published on 28 August 2006

Identification of Virulence-Associated Properties by Comparative Genome Analysis of Streptococcus pneumoniae, S. pseudopneumoniae, S. mitis, Three S. oralis Subspecies, and S. infantis

scientific article published on 03 September 2019

Identification of haemolytic Haemophilus species isolated from human clinical specimens and description of Haemophilus sputorum sp. nov.

scientific article

IgA nephropathy and Henoch-Schoenlein purpura nephritis: aberrant glycosylation of IgA1, formation of IgA1-containing immune complexes, and activation of mesangial cells

scientific article published on January 2007

IgA nephropathy: characterization of IgG antibodies specific for galactose-deficient IgA1.

scientific article published on January 2007

IgA1 proteases and host-parasite relationships in the oral cavity

scientific article published on January 1, 1992

IgA1 proteases from Haemophilus influenzae, Streptococcus pneumoniae, Neisseria meningitidis, and Streptococcus sanguis: comparative immunochemical studies

scientific article published on 01 June 1980

IgA1 proteases of oral streptococci: ecological aspects

scientific article

Immunoglobulin A1 (IgA1) proteases from Prevotella (Bacteroides) and Capnocytophaga species in relation to periodontal diseases

scientific article published in May 1991

Immunoglobulin A1 protease activity in Gemella haemolysans

scientific article published on July 2000

Immunoglobulin A1 protease activity in strains of Ureaplasma urealyticum

scientific article published on 01 February 1984

Important role for Toll-like receptor 9 in host defense against meningococcal sepsis

scientific article published on 15 September 2008

In situ identification of streptococci and other bacteria in initial dental biofilm by confocal laser scanning microscopy and fluorescence in situ hybridization

scientific article

In vivo cleavage of immunoglobulin A1 by immunoglobulin A1 proteases from Prevotella and Capnocytophaga species

article

Incidence of bacteremia after chewing, tooth brushing and scaling in individuals with periodontal inflammation

scientific article

Increased mucosal production of monomeric IgA1 but no IgA1 protease activity in Helicobacter pylori gastritis

scientific article published on October 1999

Increased proportions of bacteria capable of cleaving IgA1 in the pharynx of infants with atopic disease.

scientific article published on August 1995

Inhibition of Prevotella and Capnocytophaga immunoglobulin A1 proteases by human serum

scientific article published on July 1, 1997

Initial colonization of teeth in monkeys as related to diet.

scientific article

Intensified microbiological investigations in adult patients admitted to hospital with lower respiratory tract infections

scientific article

Interference of IgA Protease with the Effect of Secretory IgA on Adherence of Oral Streptococci to Saliva-coated Hydroxyapatite

article by J. Reinholdt & Mogens Kilian published February 1987 in Journal of Dental Research

International external quality assurance for laboratory identification and typing of Streptococcus agalactiae (Group B streptococci)

scientific article

Investigation of the translation-initiation factor IF2 gene, infB, as a tool to study the population structure of Streptococcus agalactiae

scientific article

Isolation and characterization of a newly identified Haemophilus species from cats: "Haemophilus felis".

scientific article

Isolation of Streptococcus mutans from human faeces

scientific article published in May 1971

Lack of cleavage of immunoglobulin A (IgA) from rhesus monkeys by bacterial IgA1 proteases.

scientific article published on June 1991

Limited diversity of the immunoglobulin A1 protease gene (iga) among Haemophilus influenzae serotype b strains

scientific article published on April 1988

Live Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis activate the inflammatory response through Toll-like receptors 2, 4, and 9 in species-specific patterns

scientific article published on 26 May 2006

Microbiologic study on developing plaque in human fissures

scientific article published on 01 January 1974

Microbiological and immunological characteristics of young Moroccan patients with aggressive periodontitis with and without detectable Aggregatibacter actinomycetemcomitans JP2 infection.

scientific article published on 18 November 2010

Microbiology of the early colonization of human enamel and root surfaces in vivo

scientific article published on 01 October 1987

Microevolution and patterns of dissemination of the JP2 clone of Aggregatibacter (Actinobacillus) actinomycetemcomitans

scientific article published on 12 March 2007

Microflora associated with experimental root surface caries in humans.

scientific article published on June 1990

Molecular biology of Haemophilus influenzae IgA1 proteases

scientific article published on September 1983

Molecular mapping to species level of the tonsillar crypt microbiota associated with health and recurrent tonsillitis

scientific article

Molecular polymorphism and epidemiology of Neisseria meningitidis immunoglobulin A1 proteases

scientific article published on March 1992

Molecular-cellular interactions in the secretory IgA response.

scientific article published on December 1980

Multilocus Sequence Typing (MLST) and Phylogenetic Analysis of Propionibacterium acnes

scientific article published in 2011

Multilocus sequence phylogenetic study of the genus Haemophilus with description of Haemophilus pittmaniae sp. nov.

scientific article

Multilocus sequence typing and phylogenetic analysis of Propionibacterium acnes.

scientific article published on 18 January 2012

Naturally occurring structural isomers in serum IgA1 o-glycosylation

scientific article published on 29 December 2011

Necessary Correction of Bacterial Names?

Neisseria gonorrhoeae IgA1 proteases share epitopes recognized by neutralizing antibodies

scientific article published on September 1995

Novel loop-mediated isothermal amplification method for detection of the JP2 clone of Aggregatibacter actinomycetemcomitans in subgingival plaque

scientific article

Novel molecular method for identification of Streptococcus pneumoniae applicable to clinical microbiology and 16S rRNA sequence-based microbiome studies.

scientific article

Occurrence and nature of bacterial IgA proteases

scientific article published on June 1983

Optimalization of the detection of NAD dependent Pasteurellaceae from the respiratory tract of slaughterhouse pigs

scientific article published on September 1993

Parallel evolution of Streptococcus pneumoniae and Streptococcus mitis to pathogenic and mutualistic lifestyles

scientific article

Perturbation of mucosal immune defence mechanisms by bacterial IgA proteases

scientific article published on March 1, 1983

Phylogenetic associations of ISAa1 and IS150-like insertion sequences in Actinobacillus actinomycetemcomitans

scientific article published in August 2000

Phylogeny of the genus Haemophilus as determined by comparison of partial infB sequences

scientific article published in September 2001

Population diversity and dynamics of Streptococcus mitis, Streptococcus oralis, and Streptococcus infantis in the upper respiratory tracts of adults, determined by a nonculture strategy

scientific article

Population dynamics of Streptococcus mitis in its natural habitat.

scientific article

Population genetic analysis of Propionibacterium acnes identifies a subpopulation and epidemic clones associated with acne

scientific article published in 2010

Population structure of Actinobacillus actinomycetemcomitans: a framework for studies of disease-associated properties

scientific article published on 01 August 1994

Population structure of Streptococcus agalactiae reveals an association between specific evolutionary lineages and putative virulence factors but not disease.

scientific article

Potentially pathogenic microorganisms in the oral cavity during febrile episodes in immunocompromised patients with haematologic malignancies

scientific article

Predominant plaque flora of Tanzanian children exposed to high and low water fluoride concentrations

scientific article published on January 1979

Presence of bacteriophage Aa?23 correlates with the population genetic structure of Actinobacillus actinomycetemcomitans

scientific article published in February 1997

Prevalence and distribution of principal periodontal pathogens worldwide

scientific article published on September 2008

Proportions and identity of IgA1-degrading bacteria in periodontal pockets from patients with juvenile and rapidly progressive periodontitis

scientific article published on 01 November 1986

Protein E ofHaemophilus influenzaeIs a Ubiquitous Highly Conserved Adhesin

scientific article published in 2010

Proteomic and immunoproteomic analysis of Aggregatibacter actinomycetemcomitans JP2 clone strain HK1651.

scientific article

Purification and characterization of an immunoglobulin A1 protease from Bacteroides melaninogenicus.

scientific article published on September 1984

Quantitative culture of bronchoalveolar lavage fluid in community-acquired lower respiratory tract infections

scientific article published in November 2001

Racial tropism of a highly toxic clone of Actinobacillus actinomycetemcomitans associated with juvenile periodontitis

scientific article published on December 1, 1997

Rapid diagnosis of Enterobacteriaceae. I. Detection of bacterial glycosidases

scientific article published on October 1976

Rapid identification of Actinomycetaceae and related bacteria

scientific article published on August 1, 1978

Rapid identification of Enterobacteriaceae. II. Use of a beta-glucuronidase detecting agar medium (PGUA agar) for the identification of E. coli in primary cultures of urine samples

scientific article published on October 1979

Reactivities of N-acetylgalactosamine-specific lectins with human IgA1 proteins

scientific article published on 02 February 2007

Recurrent posttraumatic meningitis due to nontypable Haemophilus influenzae: case report and review of the literature.

scientific article published on 09 October 2007

Relative proportions ofHaemophilus species in the throat of healthy children and adults

article

Resident aerobic microbiota of the adult human nasal cavityNote

scientific article published on 01 October 2000

Retained antigen-binding activity of Fab alpha fragments of human monoclonal immunoglobulin A1 (IgA1) cleaved by IgA1 protease

scientific article published on April 1986

Risk of aggressive periodontitis in adolescent carriers of the JP2 clone of Aggregatibacter (Actinobacillus) actinomycetemcomitans in Morocco: a prospective longitudinal cohort study.

scientific article published on January 2008

Role of the immune system in chronic periodontitis

scientific article published on February 1, 1979

Search for Cross-Reacting Antigens of Oral Acidogenic Bacteria and Members of the Normal Intestinal Flora

scientific article published on January 1, 1978

Septicaemia associated with an Aerococcus viridans infection in immunodeficient mice

Serum antibody responses to Streptococcus mutans antigens in humans systemically infected with oral streptococci

scientific article

Similar proportions of immunoglobulin A1 (IgA1) protease-producing streptococci in initial dental plaque of selectively IgA-deficient and normal individuals.

scientific article

Staphylococcal enterotoxins stimulate lymphoma-associated immune dysregulation.

scientific article

Staphylococcus aureus clonal dynamics and virulence factors in children with atopic dermatitis

scientific article published in November 2005

Strain–Related Acid Production by Oral Streptococci

article

Structures of two cell wall-associated polysaccharides of aStreptococcus mitisbiovar 1 strain

scientific article published on 01 December 2000

Taxonomy of the Anginosus group of the genus Streptococcus and description of Streptococcus anginosus subsp. whileyi subsp. nov. and Streptococcus constellatus subsp. viborgensis subsp. nov.

scientific article published on 7 December 2012

The Clostridium ramosum IgA proteinase represents a novel type of metalloendopeptidase

scientific article published on 28 January 2002

The dental plaque microbiome in health and disease

scientific article

The effect of chlorhexidine and some other detergents on the activity of dextransucrase from Streptococcus mutans

scientific article

The effect of chlorhexidine mouthrinses on the human oral flora

scientific article

The etiology of periodontal disease revisited by population genetic analysis

scientific article published in January 2006

The flexible gene pool of Propionibacterium acnes

scientific article published on May 2012

The glycosylation and structure of human serum IgA1, Fab, and Fc regions and the role of N-glycosylation on Fcα receptor interactions

scientific article

The haemolytic activity of Haemophilus species

scientific article published on December 1, 1976

The mucosa-bone-marrow axis in IgA nephropathy

scientific article published on January 2007

The oral microbiome - friend or foe?

The taxonomy of haemophili isolated from conjunctivae

scientific article published on June 1976

Titration of inhibiting antibodies to bacterial IgA1 proteases in human sera and secretions

scientific article published on 01 January 1995

Topical antibiotics and gastric flora

scientific article published on 01 February 1995

Tracing phylogenomic events leading to diversity of Haemophilus influenzae and the emergence of Brazilian Purpuric Fever (BPF)-associated clones

scientific article published on 30 July 2010

Two Neisseria meningitidis Strains with Different Ability to Stimulate Toll-Like Receptor 4 Through the MyD88-Independent Pathway

Typing of the enigmaticPropionibacterium acnes

Use of phylogenetic and phenotypic analyses to identify nonhemolytic streptococci isolated from bacteremic patients

scientific article

Widespread occurrence of bacterial human virulence determinants in soil and freshwater environments

scientific article published on 08 July 2013

Working mechanism of immunoglobulin A1 (IgA1) protease: cleavage of IgA1 antibody to Neisseria meningitidis PorA requires de novo synthesis of IgA1 Protease

scientific article published on October 2005

[27] Retrieval of biofilms from the oral cavity

article

[3] Immunoglobulin A (IgA)

scientific article published on 01 January 1985

[Antibiotic treatment in cases of marginal periodontitis?]

scientific article published on 01 December 1988

[Cariogenic streptococci]

scientific article published on 01 January 1970

[Is acne caused by colonization with the "wrong" strain of Propionibacterium acnes? A review of the role of Propionibacterium acnes in acne]

scientific article published on 01 April 2008

[Microbiological aspects on dental focal infection]

scientific article published on 01 October 1980