Grzegorz Jakiel

Prof. Grzegorz Jakiel

1st Obstetrical and Gynaecology Department, The Center of Postgraduate Medical Education, Warsaw, Poland
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Research Focus & Metrics

Academic Career Length

42Years (1985-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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ASAneta Słabuszewska-Jóźwiak
Aneta Słabuszewska-Jóźwiak
JSJacek Szymański
Jacek Szymański
MCMichal Ciebiera
Michal Ciebiera
Beata Sarecka-HujarBeata Sarecka-Hujar
Beata Sarecka-Hujar
GJGrzegorz Jakiel
Grzegorz Jakiel
Background: Cesarean section is a surgical procedure, which is the most frequently performed in gynecology and obstetrics. It is commonly believed that an operative delivery is a less painful and safer mode of delivery, which translates into an increasing number of the procedures performed without medical indications. The maternal sequelae of cesarean sections are well elucidated and widely discussed in the literature, while long-term neonatal consequences still remain the issue of research and scientific dispute. The aim of the present paper was to perform a systematic review of current literature regarding pediatrics consequences of cesarean section. Methods: We reviewed available data from PubMed, Science Direct as well as Google Scholar bases concerning early and long-term neonatal sequelae of operative deliveries. The following key words were used: “cesarean section”, “caesarean section”, “neonatal outcomes”, “respiratory disorders”, “asthma”, “obesity”, “overweight”, and “neurological disorders”. A total of 1636 papers were retrieved out of which 27 were selected for the final systematic review whereas 16 articles provided data for meta-analysis. Statistical analyses were performed using RevMan 5.4. To determine the strength of association between the caesarean section and respiratory tract infections, asthma, diabetes type 1 as well as obesity the pooled odds ratios (OR) with the 95% confidence intervals (CI) were calculated. Results: Conducted meta-analyses revealed that caesarean section is a risk factor for respiratory tract infections (pooled OR = 1.30 95%CI 1.06–1.60, p = 0.001), asthma (pooled OR = 1.23 95%CI 1.14–1.33, p < 0.00001) as well as obesity (pooled OR = 1.35 95%CI 1.29–1.41, p < 0.00001) in offspring. Conclusions: The results of the studies included indicated that children delivered by cesarean section more commonly developed respiratory tract infections, obesity and the manifestations of asthma than children delivered vaginally. The risk of developing diabetes mellitus type 1 or neurological disorders in offspring after caesarean section is still under discussion.

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MCMichal Ciebiera
Michal Ciebiera
Marta WłodarczykMarta Włodarczyk
Marta Włodarczyk
Małgorzata WrzosekMałgorzata Wrzosek
Małgorzata Wrzosek
Blazej MeczekalskiBlazej Meczekalski
Blazej Meczekalski
Grażyna NowickaGrażyna Nowicka
Grażyna Nowicka
GJGrzegorz Jakiel
Grzegorz Jakiel
Uterine fibroids (UFs) are benign tumors of the female genital tract made of the smooth muscle of the uterus. UF growth depends mostly on the influence of the steroid hormones and selected growth factors. Transforming growth factor β (TGF-βs) is a polypeptide that consists of three isoforms: TGF-β1, TGF-β2, and TGF-β3. At present, TGF-β is considered to be one of the key factors in the pathophysiology of UFs. It plays a major role in cellular migration within the tumor, stimulates tumor growth, and enhances tumor metabolism. As a consequence of various dependencies, the synthesis and release of TGF-β in a UF tumor is increased, which results in excessive extracellular matrix production and storage. High concentrations or overexpression of TGF-β mediators may be responsible for clinically symptomatic UFs. The aim of this review was to check the available evidence for the influence of the TGF-β family on UF biology. We conducted their search in PubMed of the National Library of Medicine with the use of the following selected keywords: “uterine fibroid”, “leiomyoma”, and “transforming growth factor β”. After reviewing the titles and abstracts, more than 115 full articles were evaluated. We focused on the TGF-β-related molecular aspects and their influence on the most common symptoms that are associated with UFs. Also, we described how the available data might implicate the current medical management of UFs.

1 December 2016 in Fertility and Sterility
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MCMichal Ciebiera
Michal Ciebiera
Marta WłodarczykMarta Włodarczyk
Marta Włodarczyk
ASAneta Słabuszewska-Jóźwiak
Aneta Słabuszewska-Jóźwiak
Grażyna NowickaGrażyna Nowicka
Grażyna Nowicka
GJGrzegorz Jakiel
Grzegorz Jakiel

14 June 2016 in Journal of Endocrinological Investigation
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Blazej MeczekalskiBlazej Meczekalski
Blazej Meczekalski
ACA. Czyzyk
A. Czyzyk
MKM. Kunicki
M. Kunicki
APA. Podfigurna-Stopa
A. Podfigurna-Stopa
LPL. Plociennik
L. Plociennik
KLK. Lukaszuk
K. Lukaszuk
Introduction Fertility is referred to the capability for having offspring and can be evaluated by fertility rate. Women’s fertility is strictly dependent on individual’s age. The fertility peak occurs in the early 20s, and it starts to decline in the third and fourth decades of life (falling sharply after age 35). Aim The aim of this work is to review the available data concerning fertility in women of late reproductive age, especially the role of serum anti-Müllerian hormone (AMH) levels. Results There are a lot of factors responsible for decrease of fertility in women of late reproductive age. These factors can be classified as oocyte-dependent (decrease in oocyte quantity and quality) and oocyte-independent (reproductive organs [uterus, oviducts] status and general health). Anti-Müllerian hormone (AMH) is a dimeric glycoprotein of the transforming growth factor-β (TGF-β) superfamily produced directly by the ovarian granulosa cells of secondary, preantral, and early antral follicles. It has been used as an ovarian reserve marker since 2002. Anti-Müllerian hormone seems to be the best endocrine marker for assessing the age-related decline of the ovarian pool in healthy women. Evaluation of AMH’s predictive value in the naturally aging population is important for counseling women about reproductive planning as well as for treatment planning for women experiencing hormone-sensitive gynecological conditions such as endometriosis and fibroids. Conclusions AMH can be considered as an indicator of fertility in late reproductive age women and pregnancy outcome in assisted reproductive technology cycles. AMH can strongly predict poor response in the controlled ovarian stimulation.

1 January 2014 in Menopause Review-Przeglad Menopauzalny
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MMMarta Makara-Studzinska
Marta Makara-Studzinska
KKKarolina Maria Kryś-Noszczyk
Karolina Maria Kryś-Noszczyk
GJGrzegorz Jakiel
Grzegorz Jakiel
Introduction : The age of menopause is a time of many changes in the psychophysical-social functioning of women, with reduced ovarian hormonal activity and estrogen levels. The most common, troublesome symptoms of menopause age include depressive disorders, sleep disorders, sexual dysfunction,...

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MCMichal Ciebiera
Michal Ciebiera
Marta WłodarczykMarta Włodarczyk
Marta Włodarczyk
MCMagdalena Ciebiera
Magdalena Ciebiera
KZKornelia Zaręba
Kornelia Zaręba
LKLukaszuk Krzysztof
Lukaszuk Krzysztof
GJGrzegorz Jakiel
Grzegorz Jakiel
This article provides a detailed review of current knowledge on the role of vitamin D and its receptor in the biology and management of uterine fibroids (UFs). Authors present ideas for future steps in this area. A literature search was conducted in PubMed using the following key words: “uterine fibroid” and “vitamin D”. The results of the available studies, published in English from January 2002 up to April 2018, have been discussed. Vitamin D is a group of steroid compounds with a powerful impact on many parts of the human body. This vitamin is believed to regulate cell proliferation and differentiation, inhibit angiogenesis, and stimulate apoptosis. Nowadays, hypovitaminosis D is believed to be a major risk factor in the development of UFs. In many studies vitamin D appears to be a powerful factor against UFs, resulting in inhibition of tumor cell division and a significant reduction in its size, however, the exact role of this compound and its receptor in the pathophysiology of UFs is not fully understood. According to available studies, vitamin D and its analogs seem to be promising, effective, and low-cost compounds in the management of UFs and their clinical symptoms, and the anti-tumor activities of vitamin D play an important role in UF biology. The synergy between vitamin D and selected anti-UF drugs is a very interesting issue which requires further research. Further studies about the biological effect of vitamin D on UF biology are essential. Vitamin D preparations (alone or as a co-drugs) could become new tools in the fight with UFs, with the additional beneficial pleiotropic effect.