Synonym |
hCG-β |
Species |
Human |
Protein Accession |
P01233 |
Purity |
≥98% |
Endotoxin Level |
<1.0 EU per μg |
Biological Activity |
Fully biologically active when compared to standard. |
Expression System |
CHO cells |
Fusion Tag |
None |
Predicted Molecular Mass |
11.9 kDa |
Formulation |
Lyophilized from a 0.2 μm filtered solution in PBS. |
Reconstitution |
Reconstitute in water to a concentration of 0.1-1.0 mg/mL. |
Storage & Stability |
Store at -20°C. Stable for 12 months from date of receipt. |
FAQ
What is Chorionic Gonadotropin-β (109-145) (human), hCG-β, and how does it work in the human
body?
Chorionic Gonadotropin-β (109-145) (human), also known as hCG-β, is a segment of the human
chorionic gonadotropin hormone. Human chorionic gonadotropin (hCG) is a glycoprotein hormone that plays
a crucial role in pregnancy and reproductive health, primarily produced by the placental
syncytiotrophoblast cells following implantation. The hormone consists of two subunits: the alpha (α)
subunit and the beta (β) subunit. While the alpha subunit is common to several other hormones such as
luteinizing hormone (LH), follicle-stimulating hormone (FSH), and thyroid-stimulating hormone (TSH), the
beta subunit is unique to hCG and confers its biological specificity.
hCG-β functions primarily
by maintaining the corpus luteum, a temporary endocrine structure that forms in the ovary after
ovulation. Once the corpus luteum is supported by hCG, it continues to produce progesterone, a hormone
essential for maintaining the uterine lining and providing a suitable environment for a fertilized egg
to implant and develop. During early pregnancy, hCG levels rise rapidly, doubling approximately every 48
to 72 hours, which is an indication of a healthy progression. Beyond supporting the corpus luteum, hCG
is also involved in promoting angiogenesis in the uterus, influencing trophoblast differentiation, and
modulating the maternal immune response to facilitate successful implantation and pregnancy
maintenance.
Furthermore, research has shown that hCG-β may have additional roles beyond
reproduction. It could be implicated in the regulation of immune tolerance and angiogenesis, not only in
placenta tissue but other physiological and pathological processes. There is growing interest in its
potential involvement in cancer biology, where it may be expressed abnormally. Understanding the
variations in expression and function of hCG-β has therefore provided insights into its broader roles
and implications in human health beyond pregnancy.
In clinical settings, the presence of hCG is a
key marker for pregnancy tests, both urine and blood tests, due to the rapid increase of the hormone in
the early stages of pregnancy. This property of hCG has led to its usage in fertility treatments, where
its administration can trigger ovulation or support the luteal phase in assisted reproductive
technologies. Its unique structure and function underpin its multifaceted role in reproductive health
and its application in both diagnostic and therapeutic contexts.
How is Chorionic Gonadotropin-β
(109-145) (human), hCG-β, used in medical treatments, and what benefits does it offer?
Chorionic
Gonadotropin-β (109-145) (human), commonly referred to as hCG-β, is widely utilized in a range of
medical treatments, particularly in fields relating to fertility and reproductive health. Its primary
role in such treatments is expounded by its ability to mimic the natural hormone dynamics essential for
ovulation and early pregnancy maintenance. Eliciting ovulation through hCG is a well-established
practice, especially in assisted reproductive technologies (ART) such as in vitro fertilization (IVF)
and intrauterine insemination (IUI). The administration of hCG-β serves as a trigger for ovulation by
mimicking the luteinizing hormone (LH) surge, thereby stimulating the final maturation and release of
eggs from the ovary.
Moreover, hCG-β is crucial in luteal phase support, a period following
ovulation when the corpus luteum forms and progesterone production is vital for maintaining early
pregnancy. Administering hCG during this time aids in sustaining the corpus luteum and supporting the
increased progesterone production necessary for creating optimal conditions for embryo implantation and
growth. This intervention is particularly beneficial in ART cycles, where natural luteal phase
insufficiency can impede pregnancy success rates.
In male infertility treatments, hCG-β is
utilized to stimulate endogenous testosterone production and spermatogenesis. It achieves this by
mimicking LH's action on the Leydig cells in the testes, promoting testosterone synthesis. This
modification in hormone levels contributes effectively to improving sperm production, thereby assisting
males facing hypogonadotropic conditions where infertility is a concern. Additionally, hCG injections
have been instrumental in resolving undescended testicles in young boys, a condition termed
cryptorchidism, thus preventing further complications such as fertility challenges or risks of
testicular cancer in later life.
Beyond the realm of reproductive fertility, hCG-β is employed
diagnostically and therapeutically in certain cases of cancer. Some tumors produce hCG, which can serve
as a biomarker for specific cancers, including testicular cancer, germ cell tumors, and some types of
bladder cancer. Monitoring hCG levels can therefore assist in diagnosis, evaluating treatment responses,
and detecting recurrences of these neoplasms. Its role as a differentiator in identifying cancerous
cells emanates from its aberrant expression in such malignancies, making it a valuable tool in
oncology.
While the benefits of hCG-β are evident, they must be complemented by considerations of
its safe administration and potential side effects, which include ovarian hyperstimulation syndrome
(OHSS) and multiple pregnancies in females undergoing fertility treatments. Nonetheless, the
multifaceted utility of hCG-β unequivocally marks it as a critical player in enhancing fertility
treatments' outcomes and providing therapeutic insights across various medical domains, thus supporting
improved health and reproductive autonomy.
What safety considerations should be taken into
account when using Chorionic Gonadotropin-β (109-145) (human), hCG-β, in
treatments?
Understanding the safety considerations associated with Chorionic Gonadotropin-β
(109-145) (human), or hCG-β, is crucial for its effective use in medical treatments, particularly given
its significant impact on the body’s hormonal balance. Safety is paramount in both the administration
and management of treatments involving hCG, and various factors must be carefully
considered.
First, it is vital to assess and differentiate patient profiles before administering
hCG-β, especially in fertility treatments. Screening for contraindications such as known
hypersensitivity to hCG or its components is critical. Additionally, it's necessary to diagnose and rule
out conditions that might be exacerbated by hormonal changes, such as hormone-sensitive tumors or
certain cancers where hCG levels may already be elevated or potentially stimulate tumor
progression.
One of the more notable risks of hCG-β treatment, especially in women undergoing
fertility procedures, is the potential for developing ovarian hyperstimulation syndrome (OHSS). OHSS is
a serious condition characterized by swollen, painful ovaries, fluid accumulation in the abdomen, and
other systemic symptoms. It often results from excessive ovarian stimulation and the body's
hypersensitivity to increased hormone levels. To mitigate this risk, treatment protocols are usually
adjusted according to individual responses, often involving the monitoring of ovarian response via
ultrasounds and estradiol levels. Clinicians may also tailor hCG doses or employ alternatives in
patients at high risk for OHSS.
Another concern is the increased likelihood of multiple
pregnancies (twins or more), which is higher with hCG-β use in controlled ovarian hyperstimulation
cycles. Multiple pregnancies carry increased risks for both the mother and neonates, including preterm
birth, low birth weight, and complications during delivery. Consequently, careful monitoring and
adjustment of treatment protocols are employed to balance the desired reproductive outcomes with the
risks associated with multiple gestations.
Education and informed consent are also pivotal
components of safe hCG-β therapy. Patients should be thoroughly informed about potential risks, side
effects, and signs to watch for that might indicate adverse outcomes, ensuring they engage actively in
their treatment processes. For instance, symptoms of OHSS necessitate immediate medical evaluation, and
individuals must be well-briefed on recognizing such symptoms.
In the context of male
infertility, monitoring testosterone levels is important, as excessive stimulation can lead to side
effects related to elevated androgens, such as increased aggression, sleep apnea, or exacerbation of
pre-existing prostate conditions. Regular follow-ups, hormonal assessments, and adjustments to treatment
plans are necessary for current therapies' safety and effectiveness.
Ultimately, the safety
considerations in the use of hCG-β necessitate a detailed, individualized approach, ensuring that the
benefits of the treatment significantly outweigh any potential risks. Regular communication between
healthcare providers and patients forms the backbone of a safe therapeutic journey, combined with
ongoing monitoring and data-driven adjustments to treatment plans.
What are the potential side
effects of using Chorionic Gonadotropin-β (109-145) (human), hCG-β, for medical purposes, and how can
they be managed?
When utilizing Chorionic Gonadotropin-β (109-145) (human), or hCG-β, in medical
treatments, awareness and management of its potential side effects are paramount. The effects may vary
based on the individual's response to therapy, the dosage used, and underlying health conditions. Here,
we highlight some of the common and serious side effects associated with hCG-β therapy and outline
strategies for their monitoring and management.
Among women undergoing fertility treatments,
ovarian hyperstimulation syndrome (OHSS) represents a significant potential side effect. OHSS occurs
when the ovaries respond excessively to hormonal stimulation, leading to enlarged ovaries and fluid
accumulation in the abdominal cavity and chest. Symptoms of OHSS can range from mild (abdominal pain,
bloating, and nausea) to severe (rapid weight gain, vomiting, reduced urination, and shortness of
breath). Management involves monitoring patients closely through ultrasound and serum estradiol levels,
tailoring the treatment cycle, and adjusting or withholding hCG doses if signs of OHSS appear. In severe
cases, hospitalization may be required to manage symptoms and prevent complications
effectively.
Increased risk of multiple pregnancies is another side effect, particularly with
assisted reproductive technologies. Twin or higher-order pregnancies can pose health risks such as
premature delivery and low birth weight. To mitigate this, careful planning and individualization of
treatment protocols are essential, coupled with limiting the number of fertilized eggs implanted during
IVF procedures.
Alongside reproductive-related side effects, systemic reactions such as injection
site pain, swelling, and irritation may occur. These are typically mild and can be managed with standard
care practices such as using a clean injection site, rotating injection areas, and employing cold or
warm compresses as needed.
For men receiving hCG-β treatment for conditions like hypogonadism,
side effects can be associated with elevated androgen levels, including mood changes such as increased
aggression, acne development, growth of body hair, and exacerbation of pre-existing conditions like
sleep apnea or prostate-related issues. Monitoring testosterone levels is essential, and adjusting hCG
doses accordingly can help manage these symptoms. Patients should be instructed to report any unusual
physical or emotional changes promptly to their healthcare provider.
Emotional and mood swings
can affect both men and women undergoing hCG therapy, owing to hormonal fluctuations similar to those
experienced during pregnancy or due to enhanced testosterone levels. Emotional support, counseling, or,
in some cases, medications can be included in the treatment plan if mood disturbances are
significant.
Overall, managing the side effects of hCG-β therapy involves thorough pre-treatment
evaluations, individualized dosing and protocols, education and engagement of patients regarding
potential risks, and close monitoring throughout the course of treatment. By understanding and preparing
for these side effects, healthcare providers can maximize therapeutic benefits while minimizing risks,
ensuring a safer and more effective therapeutic experience for patients. Regular consultations and
proactive management strategies form a critical part of optimizing outcomes and maintaining patient
well-being during hCG therapy.
Who should consider or avoid treatment with Chorionic
Gonadotropin-β (109-145) (human), hCG-β?
Chorionic Gonadotropin-β (109-145) (human), or hCG-β, is
a potent therapeutic agent widely used in fertility treatments and offers significant benefits for
patients with specific medical conditions. However, determining who should consider or avoid such
treatment demands a nuanced understanding of individual health needs, reproductive goals, and potential
risks associated with hormonal therapy.
Primarily, individuals undergoing fertility treatments
who have experienced challenges with natural conception or who are participating in assisted
reproductive technologies like in vitro fertilization (IVF) or intrauterine insemination (IUI) can
consider hCG-β treatment. For these patients, hCG-β is advantageous in inducing ovulation, supporting
the luteal phase, and enhancing overall treatment success. Its use is also extended to men suffering
from hypogonadism or low testosterone levels, where hCG-β can stimulate testosterone production and
improve fertility outcomes.
Conversely, there are certain groups of individuals for whom hCG-β
treatment may not be suitable. Women with polycystic ovary syndrome (PCOS), for example, should approach
hCG-β treatment with caution because they are already predisposed to ovarian hyperstimulation syndrome
(OHSS); hence, they require very careful monitoring and treatment customization. Similarly, individuals
with a history of hormone-sensitive cancers such as breast, ovarian, or prostate cancer are typically
advised against hCG-β therapy due to the potential for hormonal therapies to exacerbate tumor growth or
progression.
Moreover, individuals diagnosed with thyroid or adrenal dysfunction should not begin
hCG-β treatment without thorough endocrinological evaluation. The reason lies in the intrinsic balancing
act required in managing hormone therapies, which could inadvertently worsen these conditions.
Similarly, those with active blood clotting disorders or who have a history of thromboembolic disease
need careful evaluation, as hCG can potentially impact coagulation pathways.
In addition to
health conditions, certain lifestyle factors might influence the decision to pursue hCG-β therapies.
Patients undergoing treatment should ideally have stable lifestyle environments where they can adhere
strictly to treatment protocols, including the ability for consistent follow-up care. Those with busy
lifestyles or significant travel commitments may find it challenging to comply, thus undermining
treatment effectiveness.
Lastly, informed consent and a thorough understanding of potential side
effects are critical. Patients must be partners in their healthcare decisions, fully comprehending not
only the benefits but also the risks and lifestyle impacts of hCG-β therapy. This shared decision-making
ensures that all parties are aligned with treatment goals and that potential complications can be
swiftly addressed.
In summary, while hCG-β holds significant potential as a treatment modality,
selecting suitable candidates for therapy requires comprehensive assessment of individual health
profiles and reproductive goals. Simultaneously, recognizing contraindications ensures patients receive
the most appropriate care tailored to their unique needs while averting unnecessary risks, facilitating
favorable health outcomes and satisfaction with their treatment journey.