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1.
J Med Case Rep ; 12(1): 5, 2018 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-29316973

RESUMO

BACKGROUND: Kartagener's syndrome is a subset of primary ciliary dyskinesia, an autosomal recessive inherited disorder characterized by the clinical triad of chronic sinusitis, bronchiectasis, and situs inversus. Abnormal ciliary structure or function leading to impaired ciliary motility is the main pathophysiologic problem in Kartagener's syndrome. CASE PRESENTATION: A 24-year-old man from Gondar town, North-West Ethiopia, presented to University of Gondar Hospital with recurrent episodes of nasal congestion with itching and paranasal discomfort, and productive cough for more than a decade. Clinical and imaging findings revealed chronic sinusitis, bronchiectasis, dextrocardia, and situs inversus. He was treated with orally administered antibiotics, mucolytic, and chest physiotherapy. He was symptomatically better with the above therapy, and started on a long-term low-dose prophylactic antibiotic. CONCLUSIONS: Patients with Kartagener's syndrome exist in Ethiopia as cases of chronic recurrent sinopulmonary infections. As there is no easy, reliable non-invasive diagnostic test for Kartagener's syndrome and the correct diagnosis is often delayed by years, it may cause chronic respiratory problems with reduced quality of life. Genetic counseling and fertility issues should be addressed once Kartagener's syndrome is diagnosed.


Assuntos
Antibacterianos/administração & dosagem , Bronquiectasia , Dextrocardia , Expectorantes/administração & dosagem , Síndrome de Kartagener , Qualidade de Vida , Sinusite , Situs Inversus , Exercícios Respiratórios/métodos , Bronquiectasia/diagnóstico , Bronquiectasia/etiologia , Bronquiectasia/fisiopatologia , Bronquiectasia/terapia , Doença Crônica , Dextrocardia/diagnóstico , Dextrocardia/etiologia , Diagnóstico Diferencial , Aconselhamento Genético , Humanos , Síndrome de Kartagener/diagnóstico , Síndrome de Kartagener/fisiopatologia , Síndrome de Kartagener/psicologia , Síndrome de Kartagener/terapia , Masculino , Administração dos Cuidados ao Paciente/métodos , Sinusite/diagnóstico , Sinusite/tratamento farmacológico , Sinusite/etiologia , Situs Inversus/diagnóstico , Situs Inversus/etiologia , Adulto Jovem
3.
Rev. cuba. cir ; 56(4): 1-6, oct.-dic. 2017. ilus
Artigo em Espanhol | LILACS | ID: biblio-901002

RESUMO

Situs inversus totalis es una anomalía congénita poco frecuente. Se caracteriza por la transposición de los órganos tóraco-abdominales en sentido sagital al brindar una imagen llamada en espejo. Reportamos paciente de 59 años con diagnóstico de litiasis vesicular y situs inversus totalis resuelto por colecistectomía videolaparoscópica, en el Hospital Universitario Comandante Manuel Fajardo de La Habana. El cuadro clínico tuvo seis meses de evolución, con dolor a tipo cólico en hipocondrio izquierdo acompañado de náuseas, que se relacionaban con la ingestión de alimentos colecistoquinéticos. Los exámenes de laboratorio estuvieron dentro de parámetros normales. La ecografía abdominal informó litiasis vesicular, así como, el situs inversus totalis que se confirmó con Rayos X de tórax. Su evolución posoperatoria, luego de un año, fue satisfactoria, la cual mostró la factibilidad de la técnica quirúrgica empleada(AU)


Situs inversus totalis (SIT) is a rare congenital anomaly characterized by the transposition of the thoracic-abdominal organs towards the sagittal direction, producing an image called in mirror. The case is presented of a 59-year-old female patient, with a diagnosis of vesicular lithiasis and situs inversus totalis for cholelithiasis, treated by laparoscopic cholecystectomy in Comandante Manuel Fajardo University Hospital of Havana. The patient's clinical picture had a natural history of 6 months, with left colic pain in the left hipocondrium, with nauseas, accentuated on ingestion of greasy meals. The laboratory test results showed normal parameters. X-rays of the abdomen confirmed vesicular cholestasis and situs inversus totalis. The patient's postoperative evolution after one year was satisfactory, showing the feasibility of the surgical technique used(AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Colecistectomia Laparoscópica/métodos , Situs Inversus/etiologia , Tórax/diagnóstico por imagem , Cálculos da Bexiga Urinária/diagnóstico
4.
Rev. cuba. cir ; 56(4): 1-6, oct.-dic. 2017. ilus
Artigo em Espanhol | CUMED | ID: cum-72078

RESUMO

Situs inversus totalis es una anomalía congénita poco frecuente. Se caracteriza por la transposición de los órganos tóraco-abdominales en sentido sagital al brindar una imagen llamada en espejo. Reportamos paciente de 59 años con diagnóstico de litiasis vesicular y situs inversus totalis resuelto por colecistectomía videolaparoscópica, en el Hospital Universitario Comandante Manuel Fajardo de La Habana. El cuadro clínico tuvo seis meses de evolución, con dolor a tipo cólico en hipocondrio izquierdo acompañado de náuseas, que se relacionaban con la ingestión de alimentos colecistoquinéticos. Los exámenes de laboratorio estuvieron dentro de parámetros normales. La ecografía abdominal informó litiasis vesicular, así como, el situs inversus totalis que se confirmó con Rayos X de tórax. Su evolución posoperatoria, luego de un año, fue satisfactoria, la cual mostró la factibilidad de la técnica quirúrgica empleada(AU)


Situs inversus totalis (SIT) is a rare congenital anomaly characterized by the transposition of the thoracic-abdominal organs towards the sagittal direction, producing an image called in mirror. The case is presented of a 59-year-old female patient, with a diagnosis of vesicular lithiasis and situs inversus totalis for cholelithiasis, treated by laparoscopic cholecystectomy in Comandante Manuel Fajardo University Hospital of Havana. The patient's clinical picture had a natural history of 6 months, with left colic pain in the left hipocondrium, with nauseas, accentuated on ingestion of greasy meals. The laboratory test results showed normal parameters. X-rays of the abdomen confirmed vesicular cholestasis and situs inversus totalis. The patient's postoperative evolution after one year was satisfactory, showing the feasibility of the surgical technique used(AU)


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Colecistectomia Laparoscópica/métodos , Situs Inversus/etiologia , Tórax , Cálculos da Bexiga Urinária/diagnóstico
5.
Pan Afr Med J ; 23: 159, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27375831

RESUMO

Kartagener syndrome is an autosomal recessive genetic ciliary disorder comprising of a classic triad of sinusitis, situs inversus and bronchiectasis. It's the one of primary ciliary dyskinesia disorders with manifestations present from childhood. Most patients of PCD have situs inversus. We present a case of 18 year-old women with recurrent lower and upper respiratory tracts infections, and rhinolalia clausa.


Assuntos
Síndrome de Kartagener/fisiopatologia , Infecções Respiratórias/etiologia , Distúrbios da Fala/etiologia , Adolescente , Feminino , Humanos , Recidiva , Situs Inversus/etiologia
7.
J Anesth ; 29(5): 769-85, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25957984

RESUMO

Dextrocardia, a term used to describe all varieties of developmental malformations resulting in the positioning of the heart in the right hemithorax, is linked to a number of highly significant cardiac disorders. Current estimates vary tremendously in the literature. Only about 10 % of patients with diagnosed dextroversion show no substantial cardiac pathology; however, the incidence of congenital heart defects associated with dextrocardia is close to 100 %. The majority of studies previously reported include dextrocardia associated with situs inversus and cases of Kartagener syndrome. There is complex embryology and pathogenesis that results in dextrocardia. Physical examinations of the heart, such as percussion and palpation during routine exams, are vitally important initial diagnostic instruments. X-ray, CT scan, echocardiography (ECHO), and MRI are all invaluable imaging modalities to confirm and classify the diagnosis of dextrocardia. In summary, heart malposition is a group of complex pathologic associations within the human body, rather than just a single congenital defect. Clinicians such as anesthesiologists have unique challenges managing patients with dextrocardia. An appreciation of associated pathogenesis, appropriate diagnosis, and management is paramount in ensuring the best outcome for these patients perioperatively.


Assuntos
Dextrocardia/cirurgia , Cardiopatias Congênitas/cirurgia , Ecocardiografia/métodos , Humanos , Incidência , Imageamento por Ressonância Magnética/métodos , Situs Inversus/etiologia
8.
Ethiop J Health Sci ; 24(4): 363-8, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25489202

RESUMO

BACKGROUND: Recurrent lower respiratory tract infection (LRTI) is a very common problem we encounter in our clinical practice. Failure to recognize the specific cause of this condition may subject the patients to unnecessary and inappropriate treatment. CASE DETAILS: among the various causes of recurrent LRTI, the most frequent causes are abnormalities of general or local impairment of immune mechanism and abnormalities of cilia or mucus of respiratory tract. We report an adult case of recurrent upper and lower respiratory tract infections since childhood along with situs inversus totalis which was diagnosed as Kartagener's syndrome. He had all the classical clinical and radiological features of Kartagener's syndrome which is a rare inherited disorder which is seen in nearly half of the cases of primary cilliary dyskinesia (PCD). CONCLUSION: One should always keep in mind the possibilities of Kartagener's syndrome in patients presenting with recurrent upper and lower respiratory tract infections, sinusitis or bronchiectasis. Inability to diagnose this condition may subject the patient to unnecessary and repeated hospital admissions, investigations and treatment failure.


Assuntos
Síndrome de Kartagener/diagnóstico , Infecções Respiratórias/diagnóstico , Situs Inversus/diagnóstico , Adulto , Humanos , Síndrome de Kartagener/complicações , Masculino , Infecções Respiratórias/etiologia , Situs Inversus/etiologia
9.
Rev Mal Respir ; 28(7): 856-63, 2011 Sep.
Artigo em Francês | MEDLINE | ID: mdl-21943530

RESUMO

INTRODUCTION: Primary ciliary dyskinesia (PCD) is an inherited disease responsible for a disruption of normal ciliary function. Its clinical presentation is usually in early childhood with pulmonary and otorhinolaryngologic symptoms. Early diagnosis is essential to avoid the development of bronchiectasis. The aim of the study was to retrospectively review the clinical features of children suspected to have PCD. RESULTS: A total of 89 children had a bronchoscopy to perform a biopsy analyzed by transmission electron microscopy (TEM) in the childrens' hospital of Rennes between 2000 and 2009. PCD was diagnosed in 17 children, excluded in 51 and results were uncertain in 21 children. Mean age at diagnosis was 6.5 years. In the PCD group, a history of neonatal respiratory distress was found in 40% of cases, 82% had had bronchopneumonia, 37% sinusitis, 82% recurrent otitis and 23% situs inversus. These subjects had defects in ciliary structure, 59% in the dynein arms, 35% in the central complex and 6% having both. Nasal nitric oxide production was consistent with the results of TEM in 16 cases: five PCD, 11 without PCD. In two cases, the results were discordant. CONCLUSION: This case series highlights the key clinical features of recurrent otitis, sinusitis, and situs inversus, especially when occurring in combination with bronchitic symptoms. Measures of nasal nitric oxide are useful for the diagnosis of PCD and in the case of high levels of NO, PCD is unlikely. Results may not be definitive and TEM analysis of biopsies is still indispensable to ensure the diagnosis and guide genetic counselling.


Assuntos
Síndrome de Kartagener/diagnóstico , Adolescente , Asma/etiologia , Biópsia , Testes Respiratórios , Broncoscopia , Criança , Pré-Escolar , Cílios/ultraestrutura , Suscetibilidade a Doenças , Feminino , Humanos , Lactente , Recém-Nascido , Síndrome de Kartagener/complicações , Síndrome de Kartagener/patologia , Masculino , Microscopia Eletrônica , Mucosa Nasal/metabolismo , Óxido Nítrico/análise , Otite Média/etiologia , Síndrome do Desconforto Respiratório do Recém-Nascido/etiologia , Infecções Respiratórias/etiologia , Estudos Retrospectivos , Situs Inversus/etiologia
10.
Rev. clín. pesq. odontol. (Impr.) ; 5(2): 175-184, maio-ago. 2009. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-617418

RESUMO

OBJECTIVE: To review the literature and present a case of Gorlin´s syndrome with situs inversus. RESULTS AND DISCUSSION: Together with the major features, a great number of processes considered as minor features have also been described in the Gorlin´s syndrome. The latter includes numerous skeletal, dermatology related and neurological anomalies among others. In the present clinical case many criteria allowed a diagnosis of Gorlin´s syndrome, but for the first time this unique finding of situs inversus is seen with this syndrome. CONCLUSION: However, further research is needed to confirm the association between situs inversus and Gorlin´s syndrome.


OBJETIVO: Revisar a literatura e apresentar um caso de síndrome de Gorlin com situs inversus. RESULTADOS E DISCUSSÃO: Conjuntamente com os aspectos principais, um grande número de processos considerados menores têm sido descritos na síndrome de Gorlin. Entre outras, numerosas anomalias esqueletais, dermatológicas e neurológicas têm sido relatadas. No presente caso clínico, muitos critérios permitiram o diagnóstico da síndrome de Gorlin, porém, pela primeira vez relata-se a ocorrência deste achado único, o situs inversus. CONCLUSÃO: Entretanto, pesquisas adicionais são necessárias para confirmar a associação entre situs inversus e síndrome de Gorlin.


Assuntos
Humanos , Masculino , Adolescente , Anormalidades Maxilomandibulares , Síndrome do Nevo Basocelular/diagnóstico , Situs Inversus/etiologia , Mandíbula , Tomografia Computadorizada por Raios X , Ultrassonografia
12.
J Am Soc Nephrol ; 20(1): 23-35, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19118152

RESUMO

Nephronophthisis (NPHP), a recessive cystic kidney disease, is the most frequent genetic cause of end-stage kidney disease in children and young adults. Positional cloning of nine genes (NPHP1 through 9) and functional characterization of their encoded proteins (nephrocystins) have contributed to a unifying theory that defines cystic kidney diseases as "ciliopathies." The theory is based on the finding that all proteins mutated in cystic kidney diseases of humans or animal models are expressed in primary cilia or centrosomes of renal epithelial cells. Primary cilia are sensory organelles that connect mechanosensory, visual, and other stimuli to mechanisms of epithelial cell polarity and cell-cycle control. Mutations in NPHP genes cause defects in signaling mechanisms that involve the noncanonical Wnt signaling pathway and the sonic hedgehog signaling pathway, resulting in defects of planar cell polarity and tissue maintenance. The ciliary theory explains the multiple organ involvement in NPHP, which includes retinal degeneration, cerebellar hypoplasia, liver fibrosis, situs inversus, and mental retardation. Positional cloning of dozens of unknown genes that cause NPHP will elucidate further signaling mechanisms involved. Nephrocystins are highly conserved in evolution, thereby allowing the use of animal models to develop future therapeutic approaches.


Assuntos
Cílios/patologia , Doenças Renais Císticas/etiologia , Proteínas Adaptadoras de Transdução de Sinal/genética , Proteínas de Ligação a Calmodulina/genética , Polaridade Celular , Proteínas do Citoesqueleto , Humanos , Doenças Renais Císticas/patologia , Cinesinas/genética , Fatores de Transcrição Kruppel-Like/fisiologia , Cirrose Hepática/etiologia , Cirrose Hepática/genética , Proteínas de Membrana/genética , Proteínas/genética , Degeneração Retiniana/etiologia , Degeneração Retiniana/genética , Situs Inversus/etiologia , Situs Inversus/genética , Fatores de Transcrição/fisiologia
13.
Proc Biol Sci ; 271(1557): 2579-82, 2004 Dec 22.
Artigo em Inglês | MEDLINE | ID: mdl-15615683

RESUMO

... The limbs on the right side are stronger. [The] cause may be ... [that] ... motion, and abilities of moving, are somewhat holpen from the liver, which lieth on the right side. (Sir Francis Bacon, Sylva sylvarum (1627).)Fifty per cent of people with primary ciliary dyskinesia (PCD) (also known as immotile cilia syndrome or Siewert-Kartagener syndrome) have situs inversus, which is thought to result from absent nodal ciliary rotation and failure of normal symmetry breaking. In a study of 88 people with PCD, only 15.2% of 46 individuals with situs inversus, and 14.3% of 42 individuals with situs solitus, were left handed. Because cerebral lateralization is therefore still present, the nodal cilia cannot be the primary mechanism responsible for symmetry breaking in the vertebrate body. Intriguingly, one behavioural lateralization, wearing a wrist-watch on the right wrist, did correlate with situs inversus.


Assuntos
Lateralidade Funcional/fisiologia , Síndrome de Kartagener/complicações , Modelos Biológicos , Situs Inversus/etiologia , Humanos , Modelos Logísticos , Inquéritos e Questionários
14.
Rev. méd. hondur ; 72(1): 15-20, ene-mar, 2004. ilus
Artigo em Espanhol | BIMENA | ID: bim-4902

RESUMO

RESUMEN. Se presenta el caso clínico de una paciente femenina de 49 años, tosedora crónica, a quien se confirmó la presencia de bronquiectasias y situs inversus y que correspondó a un síndrome Kartagener. Este síndrome es un variante fenotípica del síndrome discinecia ciliar primaria o síndrome del ciclo inmóvil, uan enfermedad genética rara que causa inmovilidad ciliar primaria o síndrome del ciclo inmóvil, una enfermedad genética rara que causa inmovilidad cicliar. El curso clínico incluye manifestaciones secundarias al acúmulo de secreciones en vía aérea, bronquiectásias, sinusitis, otitis y esterilidad. Se revisa el tema de tos crónica, bronquiectasias y sindrome de Kartagener. Se discuten los hallazgos radiológicos encontrados


Assuntos
INFORME DE CASO , Bronquiectasia/diagnóstico , Bronquiectasia/etiologia , Situs Inversus/etiologia , Situs Inversus/diagnóstico por imagem , Tosse/etiologia , Síndrome de Kartagener/diagnóstico , Discinesias/diagnóstico , Discinesias/terapia
16.
Am J Med Genet ; 99(2): 142-6, 2001 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-11241474

RESUMO

There are very few publications on the possible relationship between maternal diabetes and infants presenting heterotaxia-asymmetry defects. In mice, there is a relationship between maternal diabetes and heterotaxia, although this is influenced by the fetal genotype. An epidemiological analysis of heterotaxia-asymmetry in children born to diabetic mothers (diabetes mellitus or gestational diabetes) is presented here. The analysis is based in the case-control study of the ECEMC database. However, due to the very small sample size for each type of study of heterotaxia-asymmetry alterations, up to 10 control infants for each case were selected. Although the sample size is small, the results suggest that only maternal diabetes mellitus significantly increases the risk for transposition of great vessels (OR=61.87; CI:7.36-519.82), and transposition of viscera (OR=24.82; CI;1.84-335.44).


Assuntos
Diabetes Gestacional , Gravidez em Diabéticas , Situs Inversus/epidemiologia , Feminino , Humanos , Recém-Nascido , Masculino , Gravidez , Situs Inversus/etiologia , Transposição dos Grandes Vasos/epidemiologia , Transposição dos Grandes Vasos/etiologia
17.
Neonatal Netw ; 20(1): 59-63, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-12143842

RESUMO

The etiology of situs inversus totalis remains uncertain. However, the literature establishes that isolated situs inversus totalis is usually asymptomatic in the neonate. This case study illustrates the importance of physical assessment skills in identifying situs inversus totalis in the neonate. Current research may reveal the etiology of this rare but fascinating abnormality.


Assuntos
Situs Inversus/diagnóstico por imagem , Feminino , Hemodinâmica , Humanos , Recém-Nascido , Enfermagem Neonatal/métodos , Avaliação em Enfermagem/métodos , Exame Físico/métodos , Radiografia , Recidiva , Infecções Respiratórias/etiologia , Situs Inversus/embriologia , Situs Inversus/etiologia , Situs Inversus/fisiopatologia
18.
Teratology ; 62(5): 317-24, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11029149

RESUMO

BACKGROUND: Normal development of the left/right (L/R) body axis leads to the characteristic sidedness of asymmetric body structures, e.g., the left-sided heart. Several genes are now known to be expressed with L/R asymmetry during embryogenesis, including nodal, a member of the transforming growth factor-beta (TGF-beta) family. Mutations or experimental treatments that affect L/R development, such as those that cause situs inversus (reversal of the sidedness of asymmetric body structures), have been shown to alter or abolish nodal's asymmetric expression. METHODS: In the present study, we examined the effects on nodal expression of alpha(1)-adrenergic stimulation, known to cause a 50% incidence of situs inversus in rat embryos grown in culture, using reverse transcription-polymerase chain reaction assay and whole-mount in situ hybridization assay. RESULTS: In embryos cultured with phenylephrine, an alpha(1)-adrenergic agonist, nodal's normal asymmetric expression only in the left lateral plate mesoderm was altered. In some treated embryos, nodal expression was detected in either the left or right lateral plate mesoderm. However, most treated embryos lacked lateral plate mesoderm expression. In addition, the embryos that did show expression were at a later stage than when nodal expression is normally found. CONCLUSIONS: Our results demonstrate that alpha(1)-adrenergic stimulation delays the onset and perturbs the normal asymmetric pattern of nodal expression. Either of these effects might contribute to situs inversus.


Assuntos
Agonistas alfa-Adrenérgicos/farmacologia , Embrião de Mamíferos/efeitos dos fármacos , Fenilefrina/farmacologia , Receptores Adrenérgicos alfa 1/metabolismo , Situs Inversus/genética , Fator de Crescimento Transformador beta/genética , Sequência de Aminoácidos , Animais , Sequência de Bases , Clonagem Molecular , Primers do DNA/química , Embrião de Mamíferos/metabolismo , Feminino , Hibridização In Situ , Dados de Sequência Molecular , Proteína Nodal , Técnicas de Cultura de Órgãos , Reação em Cadeia da Polimerase , Gravidez , Ratos , Ratos Sprague-Dawley , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Homologia de Sequência de Aminoácidos , Homologia de Sequência do Ácido Nucleico , Situs Inversus/etiologia , Situs Inversus/metabolismo , Situs Inversus/patologia , Fator de Crescimento Transformador beta/biossíntese
19.
J Med Genet ; 37(4): 241-4, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10745040

RESUMO

Primary ciliary dyskinesia is an autosomal recessive condition characterised by chronic sinusitis, bronchiectasis, and subfertility. Situs inversus occurs in 50% of cases (Kartagener syndrome). It has an estimated incidence of 1 in 20 000 live births. The clinical phenotype is caused by defective ciliary function associated with a range of ultrastructural abnormalities including absent dynein arms, absent radial spokes, and disturbed ciliary orientation. The molecular genetic basis is unknown. A genome scan was performed in five Arabic families. Using GENEHUNTER, a maximal multipoint lod score (HLOD) of 4.4 was obtained on chromosome 19q13.3-qter at alpha (proportion of linked families) = 0.7. A 15 cM critical region is defined by recombinations at D19S572 and D19S218. These data provide significant evidence for a PCD locus on chromosome 19q and confirm locus heterogeneity.


Assuntos
Cromossomos Humanos Par 19 , Transtornos da Motilidade Ciliar/genética , Adulto , Mapeamento Cromossômico , Corpo Ciliar/ultraestrutura , Transtornos da Motilidade Ciliar/fisiopatologia , Feminino , Humanos , Masculino , Repetições de Microssatélites , Linhagem , Sinusite/etiologia , Situs Inversus/etiologia
20.
Int J Dev Biol ; 43(4): 283-6, 1999 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10470644

RESUMO

Evidence is given for the opinion that cilia in the early embryo, by their work, determine the laterality of the body; without ciliary work body laterality would be randomized. More exactly, monocilia in the primitive node are responsible for this determination. They have been described as being of the 9+0 type, but with dynein arms and with a gyrating movement. The orientation of the monocilia on the epithelium is of no importance but the direction of their gyration is, as may also be the shape of the node. The chirality of the cilia is thus reflected directly in the asymmetry of the body. The dynein arms go clockwise as seen from the base to tip and the ciliary rotation is in the same direction. The resulting waterflow is towards the left and so is the movement of the forming heart. In most subgroups of the immotile-cilia syndrome this mechanism does not work and equally many individuals will be born with situs inversus as with situs solitus. An exception is the immotile-cilia subgroup, named 'microtubule transposition', which is characterized by all cilia having a 9+0 structure throughout most of their length.


Assuntos
Cílios/fisiologia , Animais , Padronização Corporal/fisiologia , Transtornos da Motilidade Ciliar/etiologia , Transtornos da Motilidade Ciliar/genética , Transtornos da Motilidade Ciliar/fisiopatologia , Dineínas/fisiologia , Humanos , Masculino , Camundongos , Modelos Biológicos , Proteínas Motores Moleculares/fisiologia , Mutação , Situs Inversus/etiologia , Síndrome
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