Tag Archives: IL-6

Hidradenitis Suppurativa and inflammation –

Hidradenitis Suppurativa (HS)

Hidradenitis suppurativa
Scarring, inflammatory abscess, with small pock marks (SINUS TRACTS) commonly found in Hidradenitis Suppurativa
Hidradenitis suppurativa
Gross ūüôĀ

HS is a chronic inflammatory skin disease associated with the formation of multiple abscesses, nodules, and scars in the apocrine gland-bearing areas. Sites that are affected include inguinofemoral (groin), axillary (arm pit) , perianal, gluteal (buttocks) , and submammary (breast) regions. Approximately 1-4% of the population is affected by this disorder. The apocrine (sweat) glands get occluded by hyperkeratotic (skin material) debris that produce follicles that rupture and cause inflammation.

The course of HS can vary from small pustules to inflammatory nodules, and in some cases become inflammatory, deep abscesses and draining sinus tracts. In other words,  an infected pock marked mess.

This disease is staged in to three categories with Stage 1 being basic abscesses without scarring and Stage 3 being the worst, having destroyed completely an area with multiple abscesses that can be interconnected and have sinus tracts (holes) connected to the skin surface.

For those with this disorder, wearing loose fitting clothes that don’t rub the areas involved, not pinching the lesions, wearing antiperspirants ¬†but not applying perfumes to the area are helpful. Topical anti-bacterial cleansing with Triclosan-containing soaps will decrease bacterial colonization. Don’t scrub the area when washing as that will inflame the lesions more.

Primary treatment includes quitting smoking – which is highly associated with Hidradenitis Suppurativa. If you continue to smoke, don’t expect to get better. Also weight loss is important as 2/3 of those with HS are overweight. The HS may be due to elevated insulin levels, hormonal changes, and dietary problems in these individuals. Avoiding dairy and high glycemic loaded foods can decrease the disease.

Metformin, an anti-diabetic drug can be helpful in decreasing the HS disease burden. This is a result of the insulin-sensitizing effect of Metformin as it is believed that HS results, in part, from elevated insulin levels.

Treatment methods, after the basics listed above, include the use of Resorcinol, a chemical peeling agent, which as a 15% solution and applied twice a day, can improve the HS lesions and decrease pain and inflammation.

Also used are antibiotics, usually Doxycycline and minocycline first line, then Clindamycin if those are not helpful. Clindamycin mixed with Rifampin has been effective in 2/3 of patients with moderate disease.  Some physicians use a combination of Moxifloxacin, Rifampin, and Metronidazole with good success.

Dapsone, an antibiotic with immunomodulatory effect, has had effect in early stage disease.

Intralesional injection of steroids is another option for local treatment as a monthly injection over a period of three months or so. Occasionally surgery must be done or an incision and drainage when a large abscess forms.

Androgens can promote the development of HS. It has been found that drospirenone- (or norgestimate-) containing oral contraceptives with spironolactone ( a blood pressure medication with anti-androgen effects) has been helpful in women.

For patients who don’t want to quit smoking or cannot lose weight and for those who fail other medical therapies, anti-TNF (tumor necrosis factor) agents are effective and have been approved for use in HS. ¬†The injected agent Infliximab was found to have a 50% reduction in severity score with most having improvement in pain and quality of life.¬†Adalimumab was recently FDA approved for HS treatment but has been less effective. Whereas Infliximab is administered by weekly infusions, Adlimumab is given by subcutaneous weekly injections. The problems with the anti- TNF agents include¬†risks for infection, heart failure, demyelinating disease, a lupus-like syndrome, and malignancy.

Oral retinoids such as acitretin and Isotretinoin have shown beneficial effect as well. Acitretin given as  0.6 mg/kg daily for 9 to 12 months showed highly effective in diminishing the disease, an effect that remained after the medicine was stopped, unlike with the biological agents, which have a higher relapse rate after discontinuance. Isotretinoin also has been effective in several studies with lower relapse after discontinuance. Both agents are highly teratogenic.

Systemic prednisone can decrease inflammation when given over 7-10 days at 40 mg a day. Cyclosporine has also been used as well.

Vitamin D3 supplementation at 300-6000 Units daily has been helpful in decreasing HS lesions in some individuals.

 Zinc salts have antiinflammatory and antiandrogenic properties.  Zinc Gluconate at 90 mg daily was very effective (36%) in significantly decreasing the inflammation of low grade HS, with beneficial effect in most who use zinc supplements.

What is interesting about Hidradenitis Suppurativa, is the inflammatory component of the disease. We know that the risk of the disease increases with obesity and cigarette smoking, which are also associated with elevated markers of inflammation themselves. Obesity is associated with elevated inflammatory markers and insulin levels, which appear to play a role in the genesis of HS as well as other diseases (i.e hypertension, fatty liver, diabetes, cancer, etc) In the article listed below, it was recognized that HS and the risk of it’s progression can be estimated by CRP levels, a marker of total body inflammation. ¬†CRP is produced by the liver in response to IL-6, another inflammatory marker. This generalized inflammation affects multiple organ systems.

Correlation of inflammatory serum markers with disease severity in patients with hidradenitis suppurativa (HS)

The above study examined the use of CRP and white blood count (wbc) in estimating the risk of progression and inflammatory content of patients with various stages of HS.

The study found that CRP level and neutrophil counts are effective tools for assessing the extent of disease severity and grade of inflammation in patients with HS above and beyond the association of these inflammatory markers with coincidental comorbidities.   For example, obese patient have elevations in CRP and smokers have higher white blood cell counts, but this study showed that CRP and wbc independently predicted worse disease status in patients with HS. There was a significant correlation between these inflammatory serum markers and disease severity according to HS severity grading scale. The end finding is that CRP is a significant and independent predictor for severe disease activity of Hidradenitis Suppurativa.

What interests me about this disease is it’s associations with comorbidities. Smokers have little hope of remission of HS¬†and HS is associated strongly with obesity. These same disorders are inflammatory in their own right. It is felt that the elevated levels of insulin and insulin resistance in obesity may play a role in worsening of HS. Obesity and the hormonal catastrophe associated with it is also associated with coronary heart disease, hypertension, fatty liver, and a host of other life-limiting diseases. So again, here is a disease process (HS) that is, in part, partially a creature of our own design – bad habits. If we could stop smoking and limit obesity, how much HS would really exist?

Correlation of inflammatory serum markers with disease severity in hidradenitis suppurativa


Here is a link to a dermatology page regarding HS:








Vaginal Microbiome – Misguided bacteria result in pre-term labor and affects the child’s microbiome.

As a prelude to this article – I just want to explain that this particular article regarding the human microbiome, although obscure at first, ties in later to other areas that affect human health and dieting decisions. I will incorporate that information in time, but I decided to start with this particular aspect due to new information that is coming out and how such a seemingly obscure issue like bacteria in the vagina could possibly have any impact on you. For pregnant women and their newborns, it certainly does since pre-term labor ¬†is costly to society and on a personal level. Also, what is alluded to in the articles below are that a number of modifying issues combine together to create an outcome. For example, poor dental hygiene may have an association with fetal outcomes and general health. Likewise, the mother’s ¬†microbiome is affected by antibiotic use and is passed down to the neonate during delivery. This ¬†external influence impacts the long term health of the child. I’m sorry if this article is not ‘sexy’ but it ties in to a longer running discussion. In an age of increasing use of probiotics and antibiotics, this type of information is evidence-based and not testimonial in nature. It will hopefully lead to a healthier outcome. ¬† – 10/10/2015

I’m going to discuss some research into microbiome-related information that has implications in quite a few areas. Of course, the latest raging research has involved increasing data regarding the trillions of bacteria that are a part of our bodies and the results of alterations in their composition. Over time, I will be writing about various evidence-based research and implications they may have for our health. One area that I see as under-served in the general health maintenance is dental care. I see a great connection with poor dental care and the possibility that it increases the rate of bad outcomes in pregnancy as related to the microbiome composition in individuals with periodontal disease during pregnancy. Of course medicaid and other insurance covers for health maintenance in other ways, but rarely does it cover dental care in the general public. It is expensive to have teeth and maintain them with general care. Between regular checkups, fillings, root canals, and crowns, a single tooth can cost several thousand dollars to spare! Hence, many people have bad teeth and bad bacteria in their mouths, which leads to generalized inflammation throughout the body. JAMA just revealed a piece in the latest issue linked below that discusses premature labor and it’s relationship to the microbiome. One study cited in the article made a clear observation of the association with dental bacteria and premature labor and poor outcomes in neonates: Here is the PDF link below:

Another Frontier in Microbiome Research: Preterm Birth

Another Frontier in Microbiome Research: Preterm Birth

Pre term birth rates

CDC site on pre term labor

The basic research is pointing more and more at general inflammation as a cause of many human illnesses. This inflammation comes from many sources. This is one more example of the association of that inflammation as related to our microbiome and poor outcomes. Let’s discuss the article:

One of the primary research articles cited in the JAMA essay included this one:

Prevalence and Diversity of Microbes in the Amniotic Fluid, the Fetal Inflammatory Response, and Pregnancy Outcome in Women with Preterm Prelabor Rupture of Membranes

Prevalence and diversity of microbes in the amniotic fluid, the fetal inflammatory response, and pregnancy outcome in women with preterm pre-labor rupture of membranes.

  • The United States has one of the highest rates of pre-term birth, at 12%, it is higher than Canada, Mexico, Europe, and many Latin American Nations.
  • Pre-term birth is a leading cause of death and neurological disability.
  • Bacteria can invade the amniotic cavity to set up infection and inflammation that results in early delivery. In the article above, bacterial DNA from the vagina, gut, and oral area have been found in the amniotic fluid. The MORE DNA found, the earlier the delivery.
  • Higher levels of Lactobacillus in the vaginal area are associated with better outcomes of the fetus and less pre-term delivery.
  • In the study above, samples from the vagina, saliva,stool, and gums were taken in 9 week intervals from 40 women who were pregnant and outcomes were followed. Of the samples, 62% were Lactobacillus-poor and this was inversely correlated with gestational age at delivery. In other words, a UNhealthy oral, gut, and vaginal microbiome was associated with pre-term delivery. In fact 75% of the subjects who had Lactobacillus dominant vaginal microbiota had a term pregnancy that was normal.
  • Microbial Invasion of the amniotic cavity ¬†(MIAC) in pre-mature rupture of the membranes (which results in early delivery) was discovered in half of the test subjects when using MOLECULAR PCR techniques , whereas it was found only in 34 % ¬†by culture. In other words, past research missed bacterial invasion on the amniotic fluid in past studies and underrepresented the importance and types of bacteria that cause and result in pre-term delivery.
  • It appears that Lactobacillus specied protect against poor pregnancy outcomes by producing proteins and lactic acid which modifies the immune response and promotes vaginal health during pregnancy.
  • It was found that by using molecular techniques, the number of invading species of bacteria was some 46 species-level phylotypes, whereas culture historically showed only 14 species. Also, new , uncultivated taxa were discovered to be involved. Included in taxa detected by PCR were some species associated with the gastrointestinal tract (Coprobacillus sp.), the mouth (Rothia denticariosa) and the vagina in the setting of bacterial vaginosis (Atropobium vaginae).
  • If a person’s PCR molecular test was positive for bacteria, the chance of getting a uterine infection during pregnancy (choramnionitis) was at a risk of 2.1, whereas a positive culture showed a risk of 2.0. Also found was that bacterial rDNA abundance was in a dose relationship with gestational age delivery, meaning that more bacterial DNA detected by PCR was associated with pre-mature birth.
  • The strength of the PCR findings was bolstered by the association of higher inflammatory WBC counts in amniotic fluid, as well as IL-6, another marker of inflammation. Patients with positive culture and PCR results (molecular based study) had even higher levels of WBC and IL-6 markers than PCR positive cases alone. The ¬†risk of choramnionitis was trending higher in patients with positive PCR results than in those with just positive culture results. The bottom line is the presence of PCR (molecular study) evidence of bacteria, culture evidence of bacteria, or both significantly increased the risk of uterine infections and pre-term delivery.¬†
  • The study also included a correlation with bacterial 16 S rRNA gene copy number, which also, when elevated, was correlated with earlier gestational age, meaning pre-term birth.
  • A negative amniotic fluid culture with a positive PCR for bacteria was associated with a lower mean birthweight and higher amounts of respiratory distress and necrotizing enterocolitis (infected dead bowel) in neonates. This shows the power of PCR analysis relative to culture.
  • The key findings in pre-term deliveries from this are: (1) Microbial Invasion of the amniotic cavity (MIAC) affected half of all those with pre-term delivery, yet this was frequently missed by regular culture results (2) diverse microbes cause pre-term birth. Many of the bacteria were from new phyla and have not been cultivated before. (3) Some of the invasion is a result of gastrointestinal microbes (4) Candida yeast infection was also present more frequently in premature delivery than in prior studies, specially when an IUD had been used. (5) The more microbial DNA ¬†present, the earlier the delivery (6) The fetus has an inflammatory response to the infection reflected in IL-6 and WBC counts in the amniotic fluid, (7) Culture of the amniotic fluid demonstrates infection 34% of the time in pre-term delivery, whereas PCR detects bacterial invasion 50% of the time in pre-term delivery.
  • This is the first study to ¬†demonstrate gastrointestinal tract bacteria as a source of microbes in amniotic fluid.
  • PCR also detected a periodontal source of infection, which was a TM7 member of bacteria that is associated with peridontitis (dental gum infection) and bacterial vaginosis (vaginal infection)
  • The study goes on to identify three Taxa of bacteria that they identified as being associated with pre-term delivery: (1) Atopobium sp, DIalister sp, and Peptoniphilus sp. which cause bacterial vaginosis, an infection associated with premature rupture of the membranes (2) A taxa associated with oral cavity bacteria, which include Filifactor alocis (endodontic infections) and Rothia dentocariosa (associated with odontogenic abscesses and fetal death) In other words, BAD TEETH may be leading to poor fetal outcomes and premature delivery. (3) Myroides spp implicated in urogenital disease and endocarditis. Also noted is that Candida infection (yeast), especially in the setting of an IUD (intrauterine device) is associated with premature birth due to biofilm formation.
  • Bottom line: Positive PCR for bacteria in amniotic fluid is associated with earlier birth rates. Elevated levels of amniotic fluid of bacterial rDNA is also associated with premature delivery. ¬†Higher levels of fetal IL-6 and histological inflammation of fetal membranes is also associated with pre-term delivery. This particular study demonstrated that prior MIAC cases may have been misclassified as being free of microbia invasion or being monomicrobial, when in fact they were not.


The vaginal microbiome during pregnancy and the postpartum period in a European population

The vaginal microbiome during pregnancy and the postpartum period in a European population

The abstract of the Nature article is below:

The composition and structure of the pregnancy vaginal microbiome may influence susceptibility to adverse pregnancy outcomes. Studies on the pregnant vaginal microbiome have largely been limited to Northern American populations. Using MiSeq sequencing of 16S rRNA gene amplicons, we characterised the vaginal microbiota of a mixed British cohort of women (n 5 42) who experienced uncomplicated term delivery and who were sampled longitudinally throughout pregnancy (8‚Äď12, 20‚Äď22, 28‚Äď30 and 34‚Äď36 weeks gestation) and 6 weeks postpartum. We show that vaginal microbiome composition dramatically changes postpartum to become less Lactobacillus spp. dominant with increased alpha-diversity irrespective of the community structure during pregnancy and independent of ethnicity. While the pregnancy vaginal microbiome was characteristically dominated by Lactobacillus spp. and low alpha-diversity, unlike Northern American populations, a significant number of pregnant women this British population had a L. jensenii-dominated microbiome characterised by low alpha-diversity. L. jensenii was predominantly observed in women of Asian and Caucasian ethnicity whereas L. gasseri was absent in samples from Black women. This study reveals new insights into biogeographical and ethnic effects upon the pregnancy and postpartum vaginal microbiome and has important implications for future studies exploring relationships between the vaginal microbiome, host health and pregnancy outcomes

The microbiome in the vaginal area has  bacteria that are believed to inhibit pathogen growth through secretion of antibacterial bacteriocins as well as the production of metabolites such as lactic acid that help to maintain a low, hostile pH6 . Dysbiosis of the vaginal microbiome is associated with complications of pregnancy, in particular an increased risk of preterm birth. The maternal vaginal microbiome may also be an important source of pioneer bacteria for the neonatal gut microbiome.  

In asymptomatic non-pregnant North American women of reproductive age, five vaginal bacterial community state types (CSTs) have been defined. Four of these are dominated by Lactobacillus species including L. crispatus (CST I), L. gasseri (CST II), L. iners (CST III), and L. jensenii (CST V). CST IV is typically characterised by low levels of Lactobacillus spp. and increased diversity of anaerobic bacteria including Prevotella, Dialister, Atopobium vaginae, Gardnerella vaginalis, Megasphaera, Peptoniphilus, Sneathia, Finegoldia, and Mobiluncus. The latter species are often associated with bacterial vaginosis, a clinical syndrome of vaginal discharge and odour characterised by polymicrobial overgrowth, which is linked to an increased risk of preterm birth, and histological chorioamnionitis. Interestingly, in American populations, vaginal bacterial communities dominated by Lactobacillus spp. (CST I, II, III and V) are most frequently observed in Asian and White women whereas a diverse microbiome (CST IV) is more frequently observed in Black and Hispanic populations suggesting that the composition of the vaginal microbiome may be, in part, shaped by genetic differences between hosts but cultural and behavioural factors cannot be excluded to explain these associations.These findings have been recently confirmed and extended by Fettweis and colleagues who identified clear ethnic related differences in the vaginal microbiome of a large population of healthy Black and White Northern American women

The above is part if Nature’s article.

  • Lactobacillus plays a role in keeping the microbiome acidic and stable during a pregnancy. Apparently estrogen levels rise through placental production and this results in the growth of Lactobacillus through increased glycogen stores in the vagina. This glycogen is broken down by alpha amylose into maltose, maltotriose, and maltotetraose, which all support Lactobacillus. After pregnancy, estrogen drops rapidly and so does Lactobacillus. Of note, endometritis ( a uterine infection ) occurs more commonly at this time.¬†¬†” Culture based methods have shown early postpartum endometritis is typically characterized by the presence of multiple microbiota often associated with bacterial vaginosis including Gardnerella vaginalis, Peptococcus spp., Bacteroides spp., Staphylococcus epidermidis, Streptococcus agalactiae and Ureaplasma urealyticum.
  • In the Nature article above, it was noted that there are geographical and ethnic differences in the vaginal microbiomes during pregnancy, and that needs to be accounted for in studies. ¬†For example, it was noted that women with a L. gasseri dominated microbiome had the fastest HPV remission rate whereas those with reduced Lactobacillus spp. and increased Atopobium had the slowest remission rate during pregnancy.
  • The bottom line is that during pregnancy, the vaginal microbiome becomes less diverse and more stable with Lactobacillus, but the actual population of Lactobacillus varies by the ethnicity and background of the person.

Preterm birth, intrauterine infection, and fetal inflammation.

Why is understanding the microbiome, even in a crazy place like the vagina so important? Because, ¬†complications of prematurity account for 29% of global neonatal deaths (approximately 1 million) each year and 3.1% of total disability adjusted life years in the global burden of disease. Of course a variety of causes of prematurity exist such as¬†uteroplacental ischemia, cervical disease, decidual hemorrhage, and stress. Evidence is accumulating that both labor and pre-term labor are initiated by a cascade of¬†pro-inflammatory changes.¬†Labor-associated inflammatory changes are characterized by immunocyte infiltration and significant increases in the expression of interleukin (IL)-1ő≤, IL- 6, IL-8, monocyte chemoattractant protein (MCP)-1, and tumor necrosis factor (TNF)-őĪ expression in the fetal membranes, cervix, amniotic fluid, and placenta

Expression of pro-inflammatory mediators is, in turn, hypothesized to result in (i) increases in prostaglandins, which promote uterine contractility; (ii) degradation of the chorioamnion extracellular matrix; and (iii) ripening of the cervix by matrix metalloproteinases and reduced expression of tissue metalloproteinase inhibitors

With the average American eating over 120 pounds of sugar a year, dental caries are a significant source of infection and inflammation. In part, dental health is associated with birth outcomes – poor teeth causes infection and inflammation that may be associated with pre-term delivery.


Complement regulators and inhibitory proteins Complement pathway review

Accessory molecules for Toll-like receptors and their function Toll like receptor review

NOD proteins: regulators of inflammation in health and disease  NOD protein review

Defensins in innate immunity Defensins review

Defensins review

Defensins: antimicrobial peptides of innate immunity

Beyond pattern recognition: five immune checkpoints for scaling the microbial threat

Insane Medicine – Inflammation and Aging – Mechanisms of poor aging!!

  • Inflammation affects the body in a number of ways, some we recognize physically and others not so much. For example, a cut on the skin can get red and inflammed. But there is a low grade, chronic inflammation that also occurs that increases as we age.
  • Many factors influence this inflammation, including genetics, lifestyle, and environmental agents. This can cause premature aging and disorders that accompany it, such as diabetes.
  • A study in the Canadian Medical Association Journal did suggest a link between elevated levels of Interleukin-6 (IL-6), a pro-inflammatory cytokine that when elevated, appears to drive other inflammatory marker up, such as CRP (C-reactive protein and fibrinogen).
  • IL-6 elevation appears to play a role in aging, causing people to age poorly when levels are elevated.
  • Successful aging is considered to have occured when an individual has good cardiovascular function ( no heart attacks) , good respiratory and musculoskeletal functioning (no emphysema/arthritis), and good mental well-being. In other words, there is an abscense of disability such as diabetes and severe arthritis or heart failure.
  • High levels of inflammation in the body are linked to cognitive decline (dementia and poor memory)
  • General body inflammation is involved in coronary artery disease, obesity, diabetes, chronic obstructive pulmonary disease (COPD), asthma, allergic conditions, rheumatoid arthritis, inflammatory bowel disease, and Alzheimer’s disease.
  • Inflammation can result in insulin resistance that then promotes obesity. Fat releases pro-inflammatory compounds that then worsens insulin-resistance. This results in a positive feedback cycle, making everything much worse.
  • Inflammatory markers being looked int incude tumopr necrosis factor (TNF), IL-6, C-reactive protein, prostaglandins, and leukotrienes. Elevations of these indicators reflects other conditions in the body, such as worsening arthritis.
  • In the Jupiter study, it was found that people with a nromal LDL (‘bad’) cholesterol would benefit from treatment with a statin to reduce the LDL even further if their CRP was elevated. The CRP elevation reflected an increased risk of heart attacks in these people despite normal or low cholesterol already. The statin (rosuvastatin), decreased the CRP and LDL cholesterol and ppears to decrease the risk of coronary events. Again, the elevated CRP reflects the inflammation in the coronary system, and this inflammation was improved by treatment with the statin.
  • Smoking worsens inflammation in the body and increases the risk of stroke and heart attacks. It promotes inflammation in the coronary arteries.
  • Obesity and high blood pressure also promote inflammation.

It is felt that IL-6 may be the driver of the inflammatory process, especially as increased levels of IL-6 (>2ng/L) increases mortality over three years. High IL-6 levels are associated with poor aging and increased risk of cardivascular events and death.

What to do:

  1. Eat a heart healthy diet including fatty fish, fruits, and vegetables. Include wine, tea, and chocolate, which have anti-inflammatory effects). The Mediterranean diet reduces inflammation.
  2. Avoid saturated fats, trans-fats, and refined sugar, which are pro-inflammatory.
  3. Get aerobic exercise. Being sedentary increases inflammation and pain.
  4. Lose weight  Рobesity increases inflammation.
  5. Quit smoking.
  6. Take low dose aspirin if you had a prior heart attack.
  7. Take a statin if your docstor indicates a need. It helps inflammation and cholesterol.
  8. Don’t drink to excess.

Sleep at least 8 hours a day. AVoid stress, anxiety, depression through better coping mechanisms. Social isolation increases chronic inflammation.



Other inflammatory markers:

Lipoprotein-associated Phospholipase A2) measures inflammation in the arteries –reference range: 81‚Äď259 ng/mL ‚Äď below 200 is consistent with reduced risk of heart attack or stoke.