scholarly journals Dendritic cells in the mucosa of the human trachea are not regularly found in the first year of life

Thorax ◽  
2001 ◽  
Vol 56 (6) ◽  
pp. 427-431 ◽  
Author(s):  
T Tschernig ◽  
A S Debertin ◽  
F Paulsen ◽  
W J Kleemann ◽  
R Pabst
Keyword(s):  
Dendritic Cells ◽  
Sudden Death ◽  
Respiratory Tract ◽  
Age Groups ◽  
First Year ◽  
Tracheal Mucosa ◽  
Transmission Electron ◽  
Human Airways ◽  
Tract Infections ◽  
First Year Of Life

BACKGROUNDDendritic cells (DCs) in the mucosa of the respiratory tract might be involved in the early development of pulmonary allergy or tolerance. To date, little is known about when the first DCs occur in human airways.METHODSSpecimens of the distal trachea from patients who had died from sudden death in the first year of life (n=29) and in older age groups (n=59) as well as from those who had died from respiratory tract infections in the first year of life (n=8) were examined by immunohistochemistry. Transmission electron microscopy was performed in additional samples from two adults.RESULTSIn the sudden death subgroup DCs were absent in 76% of those who died in the first year of life but were present in 53 of the 59 older cases. All infants who had died of respiratory infectious diseases had DCs in the tracheal mucosa.CONCLUSIONSMature DCs are not constitutively present in the human tracheobronchial mucosa in the first year of life, but their occurrence seems to be triggered by infectious stimuli. These data support the hypothesis that DCs play a crucial role in immunoregulation in early childhood.

The effects of prebiotic supplementation on weight gain, diarrhoea, constipation, fever and respiratory tract infections in the first year of life

2018 ◽  
Vol 54 (8) ◽  
pp. 875-880 ◽  
Author(s):  
Iraj Shahramian ◽  
Gholamreza Kalvandi ◽  
Hazhir Javaherizadeh ◽  
Manijeh Khalili ◽  
Noor Mohammad Noori ◽  
...  
Keyword(s):  
Weight Gain ◽  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
First Year ◽  
Tract Infections ◽  
First Year Of Life

Circumcision and Urinary Tract Infections

PEDIATRICS ◽  
1986 ◽  
Vol 77 (2) ◽  
pp. 267-269
Author(s):  
THOMAS E. WISWELL
Keyword(s):  
Urinary Tract ◽  
Urinary Tract Infections ◽  
First Year ◽  
Tract Infections ◽  
First Year Of Life

In Reply.— Dr Cunningham apparently believes that there is no plausible physiologic explanation for the association between a decreased incidence of urinary tract infections and circumcisions as we recently described,1 and that we should seek alternative explanations for our findings. However, we disagree with most of the alternative suggestions and the comments that he has made. We recently completed a second study evaluating the occurrence of urinary tract infections during the first year of life in more than 400,000 infants.

Larger Numbers Needed

PEDIATRICS ◽  
1987 ◽  
Vol 80 (5) ◽  
pp. 764-764
Author(s):  
THOMAS E. WISWELL
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Urinary Tract Infections ◽  
First Year ◽  
Infection Rates ◽  
Symptomatic Urinary Tract Infection ◽  
Tract Infections ◽  
First Year Of Life

In Reply.— Dr Altschul presents data on urinary tract infections during infancy and reports infection rates substantially lower than those we have previously reported.1,2 He then makes several conclusions based on these differences. His data indicate that the maximum infection rates would be 0.11% among girls and 0.02% and 0.12% among circumcised and uncircumcised boys, respectively. In contrast, from a population of 422,328 infants, we found the overall incidence of symptomatic urinary tract infection during the first year of life to be 0.57% in girls, 0.11% in circumcised boys, and 1.12% in uncircumcised boys.

scholarly journals Evaluation of the prevalence and seasonality of human parainfluenza virus over five year period in pediatric patients

2021 ◽  
Vol 8 (4) ◽  
pp. 260-265
Author(s):  
Meryem Colak ◽  
Selin Yigit ◽  
Anil Tapisiz ◽  
Hager Muftah ◽  
Kenan Yuce ◽  
...  
Keyword(s):  
Respiratory Tract ◽  
Respiratory Tract Infections ◽  
Pediatric Patients ◽  
Age Groups ◽  
Treatment Decision ◽  
Respiratory Illness ◽  
Common Type ◽  
Clinical Samples ◽  
Syncytial Virus ◽  
Tract Infections

Objective: Human Parainfluenza viruses (HPIVs) cause respiratory tract infections, and the second most common cause of acute respiratory illness-related hospitalizations after the respiratory syncytial virus in children <5 years of age. The aim of the study; determination of HPIVs positivity and common types in pediatric patients with respiratory tract infection; investigation the distribution of HPIV positivity by age groups, months and seasons, respectively. Material and Method: HPIV results of 1613 pediatric patients who were sent to the molecular virology laboratory from various pediatric clinics of Gazi Hospital between March 2016 and February 2021 (five years period) were investigated. Nucleic acid isolation was performed on the EZ1 Advanced (Qiagen, Germany) device using the EZ1 Virus Mini Kit by the manufacturer's protocol. Results: HPIV positivity was detected as 4.1% in clinical samples and, the most common HPIV type was found to be HPIV-3 (55%). The distribution of other HPIV types were; HPIV-2, HPIV-4 and HPIV-1 with 26%, 23% and 14%, respectively. HPIV-3 is the most common type in 2016, 2017, 2018 and 2019; however, HPIV-1 is the most common type in 2020. HPIVs co-infection was detected with other respiratory tract viruses in 51% of samples. The highest HPIV co-infection was detected in Rhinovirus. The highest HPIV positivity rate (45%) were determined in the 0-2 age group compared to other age groups (p<0.05). The highest positivity rate was in October in the autumn season (p<0.05), the lowest was in January and February in winter. The highest rate (8.1%) of HPIV positivity was found in 2016 and the lowest rate (0.7%) was in 2020. Conclusions: Since it is not possible to diagnose viral etiology of respiratory tract infections based on clinical findings, viral respiratory tract panel and Multiplex real-time PCR test are a fast and useful method in early diagnosis, treatment decision and prevention of unnecessary antibiotic use. HPIVs positivity is seen at higher rates in children aged 0-2 and in autumn months with seasonal differences.

Corroborative Evidence for the Decreased Incidence of Urinary Tract Infections in Circumcised Male Infants

PEDIATRICS ◽  
1986 ◽  
Vol 78 (1) ◽  
pp. 96-99 ◽  
Author(s):  
Thomas E. Wiswell ◽  
John D. Roscelli
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Urinary Tract Infections ◽  
First Year ◽  
Us Army ◽  
Army Hospitals ◽  
Corroborative Evidence ◽  
Tract Infections ◽  
First Year Of Life

We report the results of a two-part study examining the incidence of urinary tract infection during the first year of life. In the first part of the investigation, we reviewed the occurrence of urinary tract infection in a cohort of 3,924 infants born at our institution during a 4-year period. Infection developed in 16 infants (0.41%). The incidence of urinary tract infection in noncircumcised males was greater than the incidence in both female (P &lt; .004) and circumcised male (P &lt; .001) infants. In the second part of the study, we explored the frequency of urinary tract infection in all infants born in US Army hospitals, worldwide, over a 10-year period. There were 422,328 infants born in army facilities during this time period. Subsequent hospitalization for urinary tract infection occurred for 1,825 (0.43%) infants during the first year of life. Overall, there was no male preponderance for infections in early infancy compared with females. After an equivalent incidence during the first month of life, female infants had significantly more infections than did male infants (P &lt; .001). However, noncircumcised male infants had a higher incidence of urinary tract infection than female infants (P &lt; .001). Additionally, noncircumcised male infants had a tenfold greater incidence of infection than circumcised male infants (P &lt; .001). There was a significant decrease in the circumcision frequency rate during the 10-year study period (from 85.4% to 73.9%, P &lt; .001). As the number of circumcisions decreased, there was a concomitant increase in the overall number of urinary tract infections in males (P &lt;.02). A reduced incidence of infection may be at least one medical benefit of routine neonatal circumcision.

Decreased Incidence of Urinary Tract Infections in Circumcised Male Infants

PEDIATRICS ◽  
1985 ◽  
Vol 75 (5) ◽  
pp. 901-903 ◽  
Author(s):  
THOMAS E. WISWELL ◽  
FRANKLIN R. SMITH ◽  
JAMES W. BASS
Keyword(s):  
Urinary Tract Infection ◽  
Urinary Tract ◽  
Tract Infection ◽  
Urinary Tract Infections ◽  
Male Infant ◽  
Large Cohort ◽  
First Year ◽  
Tract Infections ◽  
First Year Of Life ◽  
Increased Susceptibility

In a recent report of 100 infants less than 8 months of age with urinary tract infection, it was noted that 95% of the male infants were not circumcised.1 The authors speculated from this observation that the uncircumcised male infant may have an increased susceptibility to urinary tract infection, but commented that the incidence of urinary tract infection in uncircumcised compared with circumcised infants was unknown. We report the results of a study documenting the incidence of unnary tract infection during the first year of life in a large cohort of infants born at our institution over an 18-month period and we also document the incidence of urinary tract infection in circumcised compared with uncircumcised male infants.

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