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One epidemiological study done on data from [[Olmsted County, Minnesota]] reported previous [[incidence rate]]s found in the literature as ranging from 0.6 cases per 100,000 person-years (based on [[France|French]] data from 1987–1992) to 5.2 per 100,000 person-years (from an [[Iceland|Icelandic]] study based on data from 1995-1999), while the authors themselves found an incidence rate of 3.1 per 100,000 person-years in Olmsted County across the entire period 1985-2001. Based only on the subset of the data from 1998-2001, however, the authors found a higher rate of 7.1 per 100,000 person-years, an incidence rate which exceeded those of Crohn's disease and ulcerative colitis.<ref name="PardiLoftus2007">{{cite journal | last=Pardi | first=D. S | last2=Loftus | first2=E. V | last3=Smyrk | first3=T. C | last4=Kammer | first4=P. P | last5=Tremaine | first5=W. J | last6=Schleck | first6=C. D | last7=Harmsen | first7=W S. | last8=Zinsmeister | first8=A. R | last9=Melton | first9=L J. | last10=Sandborn | first10=W. J | title=The epidemiology of microscopic colitis: a population based study in Olmsted County, Minnesota | journal=Gut | publisher=BMJ | volume=56 | issue=4 | date=2007-04-01 | issn=0017-5749 | doi=10.1136/gut.2006.105890 | pages=504–508}}</ref> The previously mentioned Icelandic study also found increasing rates through the studied period, with the incidence rate in Iceland increasing from 2.2 in 1995 to 8.3 in 1999.<ref name="Agnarsdottir2002">{{cite journal | last=Agnarsdottir | first=Margret | last2=Gunnlaugsson | first2=Olafur | last3=Orvar | first3=Kjartan B. | last4=Cariglia | first4=Nick | last5=Birgisson | first5=Sigurbjorn | last6=Bjornsson | first6=Sigurdur | last7=Thorgeirsson | first7=Thorgeir | last8=Jonasson | first8=Jon Gunnlaugur | title= | journal=Digestive Diseases and Sciences | publisher=Springer Science and Business Media LLC | volume=47 | issue=5 | year=2002 | issn=0163-2116 | doi=10.1023/a:1015058611858 | pages=1122–1128}}</ref> Women appear to be more frequently affected by collagenous colitis than men, with the Icelandic study finding a female-male ratio of 7.9 in diagnosed cases and the Olmsted County study finding a female-male ratio of 4.4.<ref name="PardiLoftus2007" /><ref name="Agnarsdottir2002" />
One epidemiological study done on data from [[Olmsted County, Minnesota]] reported previous [[incidence rate]]s found in the literature as ranging from 0.6 cases per 100,000 person-years (based on [[France|French]] data from 1987–1992) to 5.2 per 100,000 person-years (from an [[Iceland|Icelandic]] study based on data from 1995-1999), while the authors themselves found an incidence rate of 3.1 per 100,000 person-years in Olmsted County across the entire period 1985-2001. Based only on the subset of the data from 1998-2001, however, the authors found a higher rate of 7.1 per 100,000 person-years, an incidence rate which exceeded those of Crohn's disease and ulcerative colitis.<ref name="PardiLoftus2007">{{cite journal | last=Pardi | first=D. S | last2=Loftus | first2=E. V | last3=Smyrk | first3=T. C | last4=Kammer | first4=P. P | last5=Tremaine | first5=W. J | last6=Schleck | first6=C. D | last7=Harmsen | first7=W S. | last8=Zinsmeister | first8=A. R | last9=Melton | first9=L J. | last10=Sandborn | first10=W. J | title=The epidemiology of microscopic colitis: a population based study in Olmsted County, Minnesota | journal=Gut | publisher=BMJ | volume=56 | issue=4 | date=2007-04-01 | issn=0017-5749 | doi=10.1136/gut.2006.105890 | pages=504–508}}</ref> The previously mentioned Icelandic study also found increasing rates through the studied period, with the incidence rate in Iceland increasing from 2.2 in 1995 to 8.3 in 1999.<ref name="Agnarsdottir2002">{{cite journal | last=Agnarsdottir | first=Margret | last2=Gunnlaugsson | first2=Olafur | last3=Orvar | first3=Kjartan B. | last4=Cariglia | first4=Nick | last5=Birgisson | first5=Sigurbjorn | last6=Bjornsson | first6=Sigurdur | last7=Thorgeirsson | first7=Thorgeir | last8=Jonasson | first8=Jon Gunnlaugur | title= | journal=Digestive Diseases and Sciences | publisher=Springer Science and Business Media LLC | volume=47 | issue=5 | year=2002 | issn=0163-2116 | doi=10.1023/a:1015058611858 | pages=1122–1128}}</ref> Women appear to be more frequently affected by collagenous colitis than men, with the Icelandic study finding a female-male ratio of 7.9 in diagnosed cases and the Olmsted County study finding a female-male ratio of 4.4.<ref name="PardiLoftus2007" /><ref name="Agnarsdottir2002" />


An updated study on microscopic colitis in Olmsted County published in 2022 and based on data from between 2011 and 2019 found an incidence rate for collagenous colitis of 9.9 cases per 100,000 person-years, a [[Incidence_(epidemiology)#Incidence_vs._prevalence|prevalence]] of 100.1 per 100,000 persons and a female-male ratio of 4.7. Unlike in the previous study on data from 1995-1999, the rate of collagenous colitis in Olmsted County was found to have remained stable between 2011 and 2019.<ref name="Tome Sehgal Kamboj Harmsen 2022 pp. 1085–1094">{{cite journal | last=Tome | first=June | last2=Sehgal | first2=Kanika | last3=Kamboj | first3=Amrit K. | last4=Harmsen | first4=William S. | last5=Kammer | first5=Patricia P. | last6=Loftus | first6=Edward V. | last7=Tremaine | first7=William J. | last8=Khanna | first8=Sahil | last9=Pardi | first9=Darrell S. | title=The Epidemiology of Microscopic Colitis in Olmsted County, Minnesota: Population-Based Study From 2011 to 2019 | journal=Clinical Gastroenterology and Hepatology | publisher=Elsevier BV | volume=20 | issue=5 | year=2022 | issn=1542-3565 | doi=10.1016/j.cgh.2021.06.027 | pages=1085–1094}}</ref> Another study on rates of microscopic colitis in Denmark between 2001 and 2016 found an overall incidence rate of 12.2 per 100,000 person-years, a prevalence of 116.7 per 100,000 persons and a female-male ratio of 3.1 for collagenous colitis. Like the 1995-1999 Olmsted County study and the 1995-1999 Icelandic study, this Danish study found a heavy increase in rates of collagenous colitis and microscopic colitis overall during the studied period, with the incidence rates in 2001 and 2016 for microscopic colitis found to be, respectively, 2.3 and 24.3 cases per 100,000 person-years. However, the incidence rates of collagenous colitis in this Danish data peaked in 2011 with a rate of 19.6 cases per 100,000 person-years, and rates appeared to be stable between 2012 and 2016. The average age at diagnosis was found to be 67, and the highest incidence rate was found among patients over the age of 80. The strong increase in the case rates of microscopic colitis (with collagenous colitis making up 59% of these cases) throughout the study period meant that by 2016, microscopic colitis had a greater incidence rate in Denmark than did Crohn's disease and ulcerative colitis. The authors suggest an increase in the use of [[colonoscopy|colonoscopies]] as a possible cause of the observed change in microscopic colitis diagnoses over time.<ref name="Weimers Ankersen Lophaven Bonderup 2020 pp. 1717–1723">{{cite journal | last=Weimers | first=Petra | last2=Ankersen | first2=Dorit Vedel | last3=Lophaven | first3=Søren | last4=Bonderup | first4=Ole Kristian | last5=Münch | first5=Andreas | last6=Løkkegaard | first6=Ellen Christine Leth | last7=Burisch | first7=Johan | last8=Munkholm | first8=Pia | title=Incidence and Prevalence of Microscopic Colitis Between 2001 and 2016: A Danish Nationwide Cohort Study | journal=Journal of Crohn's and Colitis | publisher=Oxford University Press (OUP) | volume=14 | issue=12 | date=2020-06-05 | issn=1873-9946 | doi=10.1093/ecco-jcc/jjaa108 | pages=1717–1723}}</ref>
An updated study on microscopic colitis in Olmsted County published in 2022 and based on data from between 2011 and 2019 found an incidence rate for collagenous colitis of 9.9 cases per 100,000 person-years, a [[Incidence_(epidemiology)#Incidence_vs._prevalence|prevalence]] of 100.1 per 100,000 persons and a female-male ratio of 4.7. Unlike in the previous study on data from 1995-1999, the rate of collagenous colitis in Olmsted County was found to have remained stable between 2011 and 2019.<ref name="Tome Sehgal Kamboj Harmsen 2022 pp. 1085–1094">{{cite journal | last=Tome | first=June | last2=Sehgal | first2=Kanika | last3=Kamboj | first3=Amrit K. | last4=Harmsen | first4=William S. | last5=Kammer | first5=Patricia P. | last6=Loftus | first6=Edward V. | last7=Tremaine | first7=William J. | last8=Khanna | first8=Sahil | last9=Pardi | first9=Darrell S. | title=The Epidemiology of Microscopic Colitis in Olmsted County, Minnesota: Population-Based Study From 2011 to 2019 | journal=Clinical Gastroenterology and Hepatology | publisher=Elsevier BV | volume=20 | issue=5 | year=2022 | issn=1542-3565 | doi=10.1016/j.cgh.2021.06.027 | pages=1085–1094}}</ref> Another study on rates of microscopic colitis in [[Denmark]] between 2001 and 2016 found an overall incidence rate for collagenous colitis of 12.2 per 100,000 person-years, a prevalence of 116.7 per 100,000 persons and a female-male ratio of 3.1. Like the 1995-1999 Olmsted County study and the 1995-1999 Icelandic study, this Danish study found a heavy increase in rates of collagenous colitis and microscopic colitis overall during the studied period, with the incidence rates in 2001 and 2016 for microscopic colitis found to be, respectively, 2.3 and 24.3 cases per 100,000 person-years. However, the incidence rates of collagenous colitis in this Danish data peaked in 2011 with a rate of 19.6 cases per 100,000 person-years, and rates appeared to be stable between 2012 and 2016. The average age at diagnosis was found to be 67, and the highest incidence rate was found among patients over the age of 80. The strong increase in the case rates of microscopic colitis (with collagenous colitis making up 59% of these cases) throughout the study period meant that by 2016, microscopic colitis had a greater incidence rate in Denmark than did Crohn's disease and ulcerative colitis. The authors suggest an increase in the use of [[colonoscopy|colonoscopies]] as a possible cause of the observed change in microscopic colitis diagnoses over time.<ref name="Weimers Ankersen Lophaven Bonderup 2020 pp. 1717–1723">{{cite journal | last=Weimers | first=Petra | last2=Ankersen | first2=Dorit Vedel | last3=Lophaven | first3=Søren | last4=Bonderup | first4=Ole Kristian | last5=Münch | first5=Andreas | last6=Løkkegaard | first6=Ellen Christine Leth | last7=Burisch | first7=Johan | last8=Munkholm | first8=Pia | title=Incidence and Prevalence of Microscopic Colitis Between 2001 and 2016: A Danish Nationwide Cohort Study | journal=Journal of Crohn's and Colitis | publisher=Oxford University Press (OUP) | volume=14 | issue=12 | date=2020-06-05 | issn=1873-9946 | doi=10.1093/ecco-jcc/jjaa108 | pages=1717–1723}}</ref>


==References==
==References==

Revision as of 13:55, 30 October 2023

Collagenous colitis
Micrograph of collagenous colitis. H&E stain.
SpecialtyGastroenterology

Collagenous colitis is an inflammatory condition of the colon. Together with the related condition lymphocytic colitis, it is a subtype of microscopic colitis, which is sometimes considered to be an inflammatory bowel disease along with Crohn's disease and ulcerative colitis.[1][2] Collagenous colitis is characterized by inflammation that specifically affects the colon (i.e. colitis), and a clinical presentation that involves watery diarrhea but a lack of rectal bleeding. The peak incidence is in the 5th decade of life, and women more are more frequently affected than men.[1]

Signs and symptoms

Collagenous colitis causes chronic watery diarrhea with increased stool frequency. Some patients report nocturnal diarrhea, abdominal pain, bowel urgency, fecal incontinence, fatigue, dehydration and weight loss. Patients report a significantly diminished quality of life.[1][3]

Causes

The cause of collagenous colitis is unknown. A connection with autoimmune disorders such as celiac disease is suspected, as up to 40% of patients with collagenous colitis have an autoimmune disease. Use of nonsteroidal anti-inflammatory drugs (NSAIDs), proton pump inhibitors (PPIs) and beta blockers also appear to increase the risk of collagenous colitis, but the cause of this is not known.[1]

Diagnosis

On colonoscopy, the mucosa of the colon typically looks normal, but biopsies of affected tissue usually show deposition of collagen in the lamina propria, which is the area of connective tissue between colonic glands. Radiological tests, such as a barium enema are also typically normal.[3]

Treatment

First line treatment for collagenous colitis is the use of budesonide, a steroid that works locally in the colon and is highly cleared by first pass effect. Other medications that can be used include the following:[1][3]

Pilot-scale studies have shown some evidence of possible benefit for both Boswellia serrata extract and specific strains of probiotics in the treatment of collagenous colitis, although larger sample sizes are needed to confirm the results.[4][5][6]

Epidemiology

One epidemiological study done on data from Olmsted County, Minnesota reported previous incidence rates found in the literature as ranging from 0.6 cases per 100,000 person-years (based on French data from 1987–1992) to 5.2 per 100,000 person-years (from an Icelandic study based on data from 1995-1999), while the authors themselves found an incidence rate of 3.1 per 100,000 person-years in Olmsted County across the entire period 1985-2001. Based only on the subset of the data from 1998-2001, however, the authors found a higher rate of 7.1 per 100,000 person-years, an incidence rate which exceeded those of Crohn's disease and ulcerative colitis.[7] The previously mentioned Icelandic study also found increasing rates through the studied period, with the incidence rate in Iceland increasing from 2.2 in 1995 to 8.3 in 1999.[8] Women appear to be more frequently affected by collagenous colitis than men, with the Icelandic study finding a female-male ratio of 7.9 in diagnosed cases and the Olmsted County study finding a female-male ratio of 4.4.[7][8]

An updated study on microscopic colitis in Olmsted County published in 2022 and based on data from between 2011 and 2019 found an incidence rate for collagenous colitis of 9.9 cases per 100,000 person-years, a prevalence of 100.1 per 100,000 persons and a female-male ratio of 4.7. Unlike in the previous study on data from 1995-1999, the rate of collagenous colitis in Olmsted County was found to have remained stable between 2011 and 2019.[9] Another study on rates of microscopic colitis in Denmark between 2001 and 2016 found an overall incidence rate for collagenous colitis of 12.2 per 100,000 person-years, a prevalence of 116.7 per 100,000 persons and a female-male ratio of 3.1. Like the 1995-1999 Olmsted County study and the 1995-1999 Icelandic study, this Danish study found a heavy increase in rates of collagenous colitis and microscopic colitis overall during the studied period, with the incidence rates in 2001 and 2016 for microscopic colitis found to be, respectively, 2.3 and 24.3 cases per 100,000 person-years. However, the incidence rates of collagenous colitis in this Danish data peaked in 2011 with a rate of 19.6 cases per 100,000 person-years, and rates appeared to be stable between 2012 and 2016. The average age at diagnosis was found to be 67, and the highest incidence rate was found among patients over the age of 80. The strong increase in the case rates of microscopic colitis (with collagenous colitis making up 59% of these cases) throughout the study period meant that by 2016, microscopic colitis had a greater incidence rate in Denmark than did Crohn's disease and ulcerative colitis. The authors suggest an increase in the use of colonoscopies as a possible cause of the observed change in microscopic colitis diagnoses over time.[10]

References

  1. ^ a b c d e Park, Tina; Cave, David; Marshall, Christopher (2015-08-07). "Microscopic colitis: A review of etiology, treatment and refractory disease". World Journal of Gastroenterology. 21 (29): 8804–8810. doi:10.3748/wjg.v21.i29.8804. ISSN 1007-9327. PMC 4528022. PMID 26269669.
  2. ^ Jegadeesan R, Liu X, Pagadala MR, Gutierrez N, Butt M, Navaneethan U (2013). "Microscopic colitis: is it a spectrum of inflammatory bowel disease?". World J Gastroenterol. 19 (26): 4252–6. doi:10.3748/wjg.v19.i26.4252. PMC 3710430. PMID 23864791.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: unflagged free DOI (link)
  3. ^ a b c O’Toole, Aoibhlinn (2016-02-10). "Optimal management of collagenous colitis: a review". Clinical and Experimental Gastroenterology. 9: 31–39. doi:10.2147/CEG.S67233. ISSN 1178-7023. PMC 4754103. PMID 26929656.
  4. ^ Madisch A, Miehlke S, Eichele O, Mrwa J, Bethke B, Kuhlisch E, Bästlein E, Wilhelms G, Morgner A, Wigginghaus B, Stolte M (Dec 2007). "Boswellia serrata extract for the treatment of collagenous colitis. A double-blind, randomized, placebo-controlled, multicenter trial". International Journal of Colorectal Disease. 22 (12): 1445–51. doi:10.1007/s00384-007-0364-1. PMID 17764013. S2CID 206966118.
  5. ^ Wildt S, Munck LK, Vinter-Jensen L, Hanse BF, Nordgaard-Lassen I, Christensen S, Avnstroem S, Rasmussen SN, Rumessen JJ (May 2006). "Probiotic treatment of collagenous colitis: a randomized, double-blind, placebo-controlled trial with Lactobacillus acidophilus and Bifidobacterium animalis subsp. lactis". Inflammatory Bowel Diseases. 12 (5): 395–401. doi:10.1097/01.MIB.0000218763.99334.49. PMID 16670529. S2CID 870587.
  6. ^ Tromm A, Niewerth U, Khoury M, Baestlein E, Wilhelms G, Schulze J, Stolte M (May 2004). "The probiotic E. coli strain Nissle 1917 for the treatment of collagenous colitis: first results of an open-label trial". Zeitschrift für Gastroenterologie. 42 (5): 365–9. doi:10.1055/s-2004-812709. PMID 15136935. S2CID 3010852.
  7. ^ a b Pardi, D. S; Loftus, E. V; Smyrk, T. C; Kammer, P. P; Tremaine, W. J; Schleck, C. D; Harmsen, W S.; Zinsmeister, A. R; Melton, L J.; Sandborn, W. J (2007-04-01). "The epidemiology of microscopic colitis: a population based study in Olmsted County, Minnesota". Gut. 56 (4). BMJ: 504–508. doi:10.1136/gut.2006.105890. ISSN 0017-5749.
  8. ^ a b Agnarsdottir, Margret; Gunnlaugsson, Olafur; Orvar, Kjartan B.; Cariglia, Nick; Birgisson, Sigurbjorn; Bjornsson, Sigurdur; Thorgeirsson, Thorgeir; Jonasson, Jon Gunnlaugur (2002). Digestive Diseases and Sciences. 47 (5). Springer Science and Business Media LLC: 1122–1128. doi:10.1023/a:1015058611858. ISSN 0163-2116. {{cite journal}}: Missing or empty |title= (help)
  9. ^ Tome, June; Sehgal, Kanika; Kamboj, Amrit K.; Harmsen, William S.; Kammer, Patricia P.; Loftus, Edward V.; Tremaine, William J.; Khanna, Sahil; Pardi, Darrell S. (2022). "The Epidemiology of Microscopic Colitis in Olmsted County, Minnesota: Population-Based Study From 2011 to 2019". Clinical Gastroenterology and Hepatology. 20 (5). Elsevier BV: 1085–1094. doi:10.1016/j.cgh.2021.06.027. ISSN 1542-3565.
  10. ^ Weimers, Petra; Ankersen, Dorit Vedel; Lophaven, Søren; Bonderup, Ole Kristian; Münch, Andreas; Løkkegaard, Ellen Christine Leth; Burisch, Johan; Munkholm, Pia (2020-06-05). "Incidence and Prevalence of Microscopic Colitis Between 2001 and 2016: A Danish Nationwide Cohort Study". Journal of Crohn's and Colitis. 14 (12). Oxford University Press (OUP): 1717–1723. doi:10.1093/ecco-jcc/jjaa108. ISSN 1873-9946.

External links

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