25 terms

Urogenital System Diseases

Normal Microflora found
In the distal urethra, E. coli, Staphylococcus, Corynebacterium, Haemophilus, Streptococcus & Lactobacillus are most common
Female vagina is heavily
populated with microbes (Those above E. coli, Staphylococcus, Corynebacterium, Haemophilus, Streptococcus & Lactobacillus) + Lactobacillus, Clostridium, Bacteroides, Candida albicans, Fusobacterium
Normal Defenses
Urine flow flushes out microbes
Sphincters keep most pathogens out
Epithelial cell junctions are tightly joined
Other mechanisms: Anti-microbial chemicals and Low pH of urine & vaginal environment
Ascending UTI
Begin in the distal urethra & ascend to the kidneys
Descending UTI
Usually originate outside of the urinary tract.
-Organisms can enter the blood stream from a focal infection (Ex. abscessed tooth) can be filtered by the kidneys to cause infection
+/- pus in the urine (UTI)
urethra inflammation (UTI)
bladder inflammation (UTI)
Painful urination (UTI)
Frequent urination (UTI)
Diagnosis for UTI
Urine dipstick -
Positive nitrates (Metabolite produced by bacteria)
Presence of large #s of bacteria
Presence of WBCs & RBCs
-Leukocyte esterase positive (Enzyme from WBCs)
Positive nitrates
Metabolite produced by bacteria- UTI
Inflammation of the prostate gland
Urgent & frequent urination, fever, lower back pain, +/- joint/muscle pain
Possible routes of infection
Back-flow of contaminated urine
Descent of blood-borne pathogens
Ascent through urethra
Passage through lymphatics of fecal organisms from the rectum
Can cause infertility
Kidney inflammation
Usually caused by ascent of microbes
E. coli causative agent in > 90%
Occasionally Candida
May be asymptomatic
Similar to cystitis +/- chills & fever
Dilute urine & polyuria
Nocturia - Nighttime urination
Glomerulonephritis (Bright's disease)
Damage/inflammation the glomerulus of the nephrons
Immune complex disease +/- following streptococcal (S. pyogenes) or viral infection
Nephrogenic strains of S. pyogenes have similar cell wall components as found in glomerular capsule components
Results in Ag-Ab complexes being formed & filtered by the kidney
Activates inflammatory response of glomerular capillaries initiated
Inflamed vessels leak protein, blood & pus in the urine
Leptospira interrogans (Gram negative motile spirochete)
Nighttime urination
happens in Pyelonephritis
A breakdown of Antibodies
virulence factor in Neisseria gonorrhoeae
Treatments for Gonorrhea and Chlamydia
Ciprofloxin / Tetracyclines / Penicillins
Drug resistance is becoming a problem
Some areas 20% of Gonorrhea infections are multidrug resistance
Treponema palladium
Gram negative, highly motile, spirochete
Only parasitic to humans
Must be grown in the testicles of rabbits in vivo
Killed by drying & cooling & is transmitted almost exclusively by sexual or oral contact
3 stages
Herpesvirus Outbreaks treated with______
Virus can be shed even if skin outbreaks not seen.
Blocks viral DNA polymerase
Herpes simplex virus type 1 (HSV-1)
Fever blisters or cold sores
Herpes simplex virus type 2 (HSV-2)
Genital herpes
-dsDNA, enveloped virus
-Sexually transmitted, but rarely can be spread through hot tubs
Genital warts
Human papillomaviruses
Small, non-enveloped, dsDNA viruses
> 60 HPVs with ~ 15 sexually transmitted
Occur around the anus, vagina, penis, or on the cervix
Types 16 and 18 associate with cervical cancer in females & throat anal cancer in males
Vaccine available
Cytomegalovirus (CMV)
Often asymptomatic (an estimated 80% of adults carry the virus)
Spread via body fluids
Most infections occur in older children & older adults
Symptoms include generalized malaise, myalgia, fever, abnormal liver function tests, swollen lymph nodes
Symptoms are more severe in immune compromised patients
Again, can remain latent (episomal form)