Evidence map›Paper›PMID 17036378›Full record

ReviewWorld journal of gastroenterology2006

Heavy smoking and liver.

Abdel-Rahman El-Zayadi

Open access · hybridAbstract readEditorialReview
In one paragraph

Review in World journal of gastroenterology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 4 pooled it
5.5field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 4 syntheses or guidelines pooled it, 226 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pulmonary effects of e-liquid flavors: a systematic review.Journal of toxicology and environmental health. Part B, Critical reviews · 2022
    Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. The intersection of liver cirrhosis and pulmonary fibrosis.Journal of translational medicine · 2025
    Review
  13. Albumin-corrected anion gap and risk of mortality among US adults.Archives of public health = Archives belges de sante publique · 2025
    Article
  14. Prevalence, risk factors, and demographic insights of sickle cell hepatopathy in Omani adolescents and adults: A retrospective analysis.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2025
    Article
  15. Article
  16. Article
  17. Article
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  19. Article
  20. Review

21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Abdel-Rahman El-ZayadiHepatology and Gastroenterology, Ain Shams University and Director of Cairo Liver Center. 5, El-Gergawy St. Dokki, Giza, Egypt. clcz@tedata.net.eg
Ain Shams University · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Smoking causes a variety of adverse effects on organs that have no direct contact with the smoke itself such as the liver. It induces three major adverse effects on the liver: direct or indirect toxic effects, immunological effects and oncogenic effects. Smoking yields chemical substances with cytotoxic potential which increase necro-inflammation and fibrosis. In addition, smoking increases the production of pro-inflammatory cytokines (IL-1, IL-6 and TNF- alpha) that would be involved in liver cell injury. It contributes to the development of secondary polycythemia and in turn to increased red cell mass and turnover which might be a contributing factor to secondary iron overload disease promoting oxidative stress of hepatocytes. Increased red cell mass and turnover are associated with increased purine catabolism which promotes excessive production of uric acid. Smoking affects both cell-mediated and humoral immune responses by blocking lymphocyte proliferation and inducing apoptosis of lymphocytes. Smoking also increases serum and hepatic iron which induce oxidative stress and lipid peroxidation that lead to activation of stellate cells and development of fibrosis. Smoking yields chemicals with oncogenic potential that increase the risk of hepatocellular carcinoma (HCC) in patients with viral hepatitis and are independent of viral infection as well. Tobacco smoking has been associated with suppression of p53 (tumour suppressor gene). In addition, smoking causes suppression of T-cell responses and is associated with decreased surveillance for tumour cells. Moreover, it has been reported that heavy smoking affects the sustained virological response to interferon (IFN) therapy in hepatitis C patients which can be improved by repeated phlebotomy. Smoker's syndrome is a clinico-pathological condition where patients complain of episodes of facial flushing, warmth of the palms and soles of feet, throbbing headache, fullness in the head, dizziness, lethargy, prickling sensation, pruritus and arthralgia.

Indexed as

Hepatitis C, ChronicHumansInterferonsLiverNeoplastic ProcessesNicotianaPolycythemiaSmokeSmokingInterferonsSmoke

Identifiers

PMID17036378
PMCPMC4088100
OpenAlexW2143410589

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.