Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effect of montelukast on platelet activating factor- and tachykinin induced mucus secretion in the rat
The epidermal mucus of fish species has been found to contain antimicro-bial proteins and peptides, which is of interest in regard to fish immunity.
An acidic extract from the epidermal mucus of the Atlantic cod (Gadus
morhua) was found to exhibit antimicrobial activity against Bacillus mega-terium, Escherichia coli andCandida albicans. This activity varied signifi-cantly when salt was added to the antimicrobial assay, and was eliminated
by pepsin digestion.
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài:"Chronic OVA allergen challenged Siglec-F deficient mice have increased mucus, remodeling, and epithelial...
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: " JNK activation is responsible for mucus overproduction in smoke inhalation injury...
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: The inhibition of the Human Immunodeficiency Virus type 1 activity by crude and purified human pregnancy plug mucus and mucins in an inhibition assay
The thought of mucus disturbs many people. Mucus is beneficial as the first
defense of the airways. The mucus lining traps inhaled particles and allows them
to be cleared from the airway by cilia and cough. The mucus layer also prevents
dehydration and desiccation of the airway surface and provides a nutrient milieu
for the ciliated epithelium. Mucus can also be quite bad. Airway mucus retention
due to hypersecretion or poor mucus clearance is a characteristic of many airway
diseases including cystic fibrosis, chronic bronchitis, bronchiectasis, and asthma.
Fish produce mucus substances as a defensive outer barrier against envi-ronmental xenobiotics and predators. Recently, we found a bioactive pro-tein in the mucus layer of the flounder Platichthys stellatus, which showed
antibacterial activity against Staphylococcus epidermidis, Staphylococ-cus aureusand methicillin-resistantS. aureus.
Fish skin mucus contains a variety of antimicrobial proteins and peptides
that seem to play a role in self defense. We previously reported an antibac-terial protein in the skin secretion of the rockfish, Sebastes schlegeli, which
showed selective antibacterial activity against Gram-negative bacteria. This
study aimed to isolate and structurally and functionally characterize this
COMBINED ORAL CONTRACEPTIVES Mechanism of action
The combined oral contraceptive (COC) pills currently available in the UK are shown in Table 2. They combine an estrogen (ethinylestradiol (EE) in all cases but one) with one of seven progestogens. Aside from secondary contraceptive effects on the cervical mucus and to impede implantation, COCs primarily prevent ovulation. This makes the method highly effective in ‘perfect’ use (Table 1), but it removes the normal menstrual cyle and replaces it with a cycle that is user-produced and based only on the end-organ, i.e. the endometrium.
Mặc dầu chữ “mucoviscidose” có từ năm 1943, là năm trong đó những đặc điểm của bệnh thật sự được xác định (nghĩa là “bệnh của các niêm dịch nhầy nhớt” : maladie des mucus visqueux, chữ thường được ưa thích hơn thuật ngữ Anh cystic). Các dấu vết của bệnh này cũng đã được tìm thấy trong các mô tả triệu chứng có từ thời Trung Cổ.
Encouraged by the friendly acceptance of the first edition and stimulated by
numerous requests and comments from the community of meiobenthologists,
this second edition updates my monograph on meiobenthology. The revised text
emphasizes new discoveries and developments of relevance; it has been
extended by adding chapters on meiofauna in areas not covered before, such as
the polar regions, mangroves, and hydrothermal vents.
Sympathetic nerve stimulation induces vasoconstriction and
consequent decreases nasal airway resistance. Parasympathetic
nerve stimulation on the other hand, promotes secretion from
nasal airway glands and nasal congestion. The nasal mucosa also
contains nerves of the non-adrenergic, non-cholinergic (NANC)-
system. Neuropeptides from the latter nerves (substance P,
neurokinin A and K, and calcitonin gene-related peptide) are
suspected to play a role in vasodilatation, mucus secretion,
plasma extravasation, neurogenic inflammation, and mast
cell nerve interactions.
Inspection of the vulva and perineum may reveal tender genital ulcerations (typically due to HSV infection, occasionally due to chancroid) or fissures (typically due to vulvovaginal candidiasis) or discharge visible at the introitus before insertion of a speculum (suggestive of bacterial vaginosis or trichomoniasis).
Chapter 124. Sexually Transmitted Infections: Overview and Clinical Approach (Part 12)
Gram's stain of cervical mucus, showing a strand of cervical mucus
containing many polymorphonuclear leukocytes. This picture is typical of mucopurulent cervicitis. Note that leukocytes are not seen in areas of the slide containing vaginal epithelial cells, adjacent to the mucus strands.
The speculum should be carefully positioned so the entire cervix is seen. If excess
mucus or other secretions obscure the cervix, they should be gently removed using a
proctoswab without disturbing the epithelium. Small amounts of blood will not interfere
with cytologic evaluation, but large amounts, as occurs during menses, preclude
cytologic interpretation by conventional Pap smear. This is considerably less of a
problem when liquid based cytology is used.
Leukorrhea is a usually whitish vaginal discharge that may occur at any age and affects virtually all women at some time. Although some vaginal discharge (mucus) is physiologic and nearly always present, when it becomes greater or abnormal (bloody or soils clothing), is irritating, or has an offensive odor, it is considered pathologic. Pathologic discharge is often coupled with vulvar irritation. Commonly, the pathologic conditions are due to infection of the vagina or cervix.
Despite mounting public concern, the factors influencing this illness are not fully understood,
especially for children. Medical research has demonstrated that asthma is both a chronic and acute illness.
In the chronic aspect, an individual’s airways are persistently inflamed and their immune system is hyper-
responsive, but the causes of this remain largely unknown (American Lung Association (2000)).
Mucin, a major component of mucus, is a highly O-glycosylated, high-molecular-mass glycoprotein extensively involved in the physiology of
gastrointestinal mucosa. To detect and characterize mucins derived from
site-specific mucous cells, we developed a monoclonal antibody, designated
PGM34, by immunizing a mouse with purified pig gastric mucin.
As mentioned above, the first defensive strategy of the host
against infection consists of a non-specific phase, where the
mucus and its contents (for example defensin and lysozyme)
play a major role. Other important soluble chemical factors
are acute phase proteins such as C-reactive protein, interferon,
lactoferrin, sIgA, and the complement system
Defensin plays an important role in defence against both
enveloped and non-enveloped viruses. This protein is present
in immune cells, to assists in the killing of phagocytized