Review
Cancer surgery: how may anesthesia influence outcome?

https://doi.org/10.1016/j.jclinane.2015.02.007Get rights and content

Highlights

  • Surgery can promote local recurrence and distance spread of cancer.

  • Anesthetic agents might influence cancer cell proliferation.

  • Opioids promote angiogenesis and tumor progression.

  • Local anesthetics inhibit proliferation and stimulate apoptosis.

  • Perioperative pain management may influence long-time survival.

Abstract

Objective

To review the published literature regarding the effects of anesthesia on cancer surgery to prevent tumor cell proliferation/migration or induce apoptosis.

Background

Surgery is the main treatment for potentially curable solid tumors, but most cancer-related deaths in patients who have received previous surgical treatment are caused by metastatic disease. There is increasing evidence that anesthetic technique has the potential to affect long-term outcome after cancer surgery.

Methods

This work reviews the English published literature that was obtained by performing a search of the PubMed database up to January 2014. We selected articles that provided evidence or reviewed the possible actions of anesthetics on cancer cells or the influence of anesthesia in recurrence/outcome.

Results

Inhaled anesthetics induce immunosuppression and activate inflammatory cascade activation, whereas propofol has a protective action. Opioids might promote cancer recurrence and metastasis. In vitro and in vivo studies have demonstrated that local anesthetics inhibit proliferation and migration of cancer cells and induce apoptosis.

Conclusions

Anesthesiologists should follow current best clinical practice and include all strategies that effectively decrease pain and attenuate stress. Regional anesthesia and multimodal analgesia, adding anti-inflammatory drugs, play an unquestionable role in the control of perioperative pain and may improve recurrence-free survival.

Section snippets

Background

Cancer treatment is evolving as we learn more about the molecular basis of cancer and new therapeutic targets are discovered. However, despite the use of radical surgery, chemotherapy and radiotherapy, and new hormonal and immunological treatments, recurrences and metastases continue to appear.

Surgery is the main treatment for potentially curable solid tumors, but most cancer-related deaths in patients who have received previous surgical treatment are caused by metastatic disease. It was first

Surgery, surgical stress, and cancer progression

Some authors, such as Demicheli et al [1], demonstrated that surgery itself plays a fundamental role in cancer progression and metastatic recurrence. Nearly a century ago, Tizzer [2] reported that surgery induced tumor growth in animals inoculated with cancer cells. Van der Bij et al [3] following their survey postulated that blood vessel integrity in the liver is compromised after abdominal trauma, resulting in enhanced extracellular matrix exposure, which enables tumor cell adhesion and

General anesthetics and cancer progression

Anesthetic and analgesic agents administered during surgery might influence cancer cell activity. Some specific techniques have been linked with tumor recurrence and long-term outcome [8]. Melamed et al [15] demonstrated in rat models that some anesthetics (eg, ketamine, thiopental, halothane, but not propofol) increase the probability of tumor metastasis, apparently by suppressing NK cell activity. Ketamine was the most deleterious, and its effects were prevented by peripheral blockade of

Perioperative opioids and cancer progression

Opioids are the primary drugs used in perioperative pain management, and their analgesic effect is beneficial in reducing pain and its consequent surgical stress. There is a growing interest in investigating the relationship between opioids and tumor progression, although the results obtained thus far are controversial.

Perioperative opioids may produce cellular and humoral immunosuppression. Research data have demonstrated that opioids have a suppressive effect on phagocytic, NK, B, and T cells

Local-regional anesthesia and cancer surgery

Combining regional and general anesthesia in major surgery has become common practice in many institutions and is expected to reduce the requirement for inhaled general anesthetics and opioids. Combined or given separately, regional anesthesia attenuates the neuroendocrine stress response to surgery and avoids perioperative immunosuppression.

An animal study demonstrated that regional anesthesia and analgesia reduced the metastatic burden in animals inoculated with adenocarcinoma cells after

Cellular effects of LAs: apoptosis activation, migration inhibition, and cancer cell proliferation

LAs have been shown to affect certain tumor cells' vital cycle and processes critical for metastasis, such as apoptosis, migration, and proliferation (Table 2).

Hollman and Durieux [81] have suggested that the antimetastatic effects of LAs are due to their systemic actions. LAs show pleiotropic effects that are unrelated to sodium channel blockade but include neuroprotective, anti-inflammatory, bronchodilator, antithrombotic, and anti-infectious activity. Yardeni et al [58], in a survey

Substance P and cancer

Substance P (SP) is a neuropeptide that belongs to the tachykinin family, facilitating pain through activation of the neurokinin 1 (NK-1) receptor. The NK-1 G protein-coupled receptor has widespread distribution in the central nervous system and in peripheral tissues. There are numerous studies suggesting that this receptor system could play an important role in the development of cancer. It is known that SP has a mitogenic action on several human cancer cell lines (eg, neuroblastoma, glioma,

Conclusion

We have reviewed how anesthesia may influence the outcome of cancer surgery. Inhaled anesthetics induce immunosuppression and activate the inflammatory cascade, whereas propofol has a protective action. Opioids might promote cancer recurrence and metastasis, as demonstrated in vitro and in animal studies. Some clinical retrospective publications also suggest an improvement in survival by procedures that reduce perioperative morphine dosing.

Although beyond the scope of this review, it is

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