Bacteria cannot enter the urethra during male erection

After men reach adulthood, their penises will automatically erect, especially after being stimulated, which is the most common phenomenon. The male urethra is relatively tight after an erection, so it is not easy for bacteria to enter, but prevention work must be done. In addition, prostatitis is emerging in large numbers, so as a man, you must do well in these aspects.

Pathological etiology

(I) Causes of the disease

There are many causes of prostatitis, and different types of prostatitis have different causes. In the onset of bacterial prostatitis, infectious factors play a dominant role. In the onset of non-bacterial prostatitis and prostatitis, infectious factors may be an inducing or initial factor, while non-infectious factors may play a dominant role.

The following factors may play a role in the development of prostatitis:

1. Infectious factors

(1) Bacteria: The pathogenic microorganisms in bacterial prostatitis are similar to those that cause urogenital tract infections. Common pathogens are Escherichia coli (E. coli), and a few are Proteus, Klebsiella, Enterococcus, etc.; Gram-positive bacteria rarely cause infection. Absolute anaerobic bacteria rarely cause prostate infections. The role of Gram-positive bacteria in etiology is still controversial, and most researchers agree that Enterococci cause chronic prostatitis. However, many scholars still have doubts about the pathogenic role of other Gram-positive bacteria such as Staphylococcus, Streptococcus, Coccus, and Diphtheroids in prostatitis. Recently, some researchers believe that Gram-positive bacteria, except Enterococcus, rarely cause obvious prostatitis. In China, Staphylococcus aureus is still a common bacteria in the culture of prostate fluid of patients. Whether the species is different from that in foreign countries or it is contamination of urethral bacteria needs further clarification. Most prostate infections are caused by a single pathogen, but cases caused by two or more strains or types of bacteria also occur from time to time.

Bacterial prostatitis may be caused by retrograde or reflux infection of urine after bacterial infection. Infected urine can enter the prostate through the prostatic duct that opens into the posterior urethra. Urine inflow into the prostate is relatively common and certainly plays an important role in the pathogenicity of bacterial prostatitis. Some researchers have analyzed the crystal morphology of prostate stones and found that many components in the stones do not appear in normal prostatic fluid but only in urine.

Other possibilities include direct spread of bacteria from the rectum or spread by lymphatic and hematogenous infection.